doc: update README and TODO

# Conflicts:
#	db_badger.go

.gitignore

@@ -1,8 +1,5 @@
 testdata/
-liblcl-*.zip
-liblcl.so
-liblcl.dll
-yvbolt
-yvbolt.exe
-yvbolt.linux64.tar.xz
-yvbolt.win64.zip
+qbolt
+qbolt.exe
+qbolt.linux64.tar.xz
+qbolt.win64.zip

CHANGELOG.md

@@ -0,0 +1,190 @@
+# Changelog
+
+2025-12-20 v2.0.0
+
+- Merge yvbolt and QBolt together
+- App: Show application version in main window titlebar
+
+2025-12-20 v0.11.0 (yvbolt)
+
+- Badger: Change encryption configuration options (**BREAKING**)
+- SSH Agent: Initial support, including lock/unlock
+- Badger, SQLite: Fix "all files" spec when choosing an export file path
+- Bolt: Support import/export as zip archive
+- Support SSH agents when using SSH tunnels (e.g. for Redis or Mongo)
+
+2025-12-17 v0.10.1 (yvbolt)
+
+- Fix mixed Qt 5 / Qt 6 syntax
+- Build release binaries with Go1.26
+- [⬇️ Download here](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/tag/v0.10.1)
+
+2025-12-16 v0.10.0 (yvbolt)
+
+- MongoDB: Initial support, including SSH tunnel, managing collections, traversing BSON documents, and querying
+- LotusDB: Initial support, including editing
+- Bitcask: Initial support, including editing and backup
+- RoseDB: Initial support, including editing
+- Badger: Fix k/v column display, support editing
+- LMDB: Support editing, add warning for destructive actions
+- LevelDB: Support editing
+- Pebble: Support editing
+- Starskey: Fix k/v column display, support editing
+- Redis: Bump driver version v9.16.0 -> v9.17.2
+- Bolt: Add warning for destructive actions
+- Connection manager: When saving, use the database's preferred name
+- App: Add hex viewer for binary data if it is not valid UTF-8
+- App: Use virtualized table renderer
+- App: Use multiple plug-in typed column stores in table backend
+- App: Fix graphical flicker when editing connections on Windows
+- App: Set up icon and exe properties on Windows
+- App: Embed version number in release builds
+- App: Show all driver versions as a virtual data table
+- App: Show unsaved-changes warning also when changing database
+- App: Fix rich text formatting appearing when pasting into the query window
+
+2025-12-02 v0.9.0 (yvbolt)
+
+- LMDB: Initial support, including multi-database mode, data editing, and managing child databases
+- Starskey: Initial support
+- Freedesktop.org Secret Service: Initial support, including unlocking collections and creating child collections
+- App: Use global toolbar style
+- App: Add connection manager, encrypting credentials with AEAD AES256-GCM using OS keychain
+- App: Offer to save valid quick-connection to the connection manager
+- App: Add 'About Qt' menu option
+- App: Fixed file extension filter for database files with no extension
+- App: Fixed background colour for Properties area on different OSes
+- App: Fixed libpng warnings about greyscale image data for embedded logo images
+- App: Fixed issue with non-UTF8 child database names
+- Debconf: Improve navigation speed by splitting applications into virtual tables
+- SSH: Redesign options to pick only one of the available auth methods
+- Fixed running release binary on Debian 12
+- [⬇️ Download here](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/tag/v0.9.0)
+
+2025-11-23 v0.8.0 (yvbolt)
+
+- Port from [liblcl](https://github.com/ying32/liblcl) to [MIQT Qt 6](https://github.com/mappu/miqt)
+- Badger: Upgrade v4.2.0 -> v4.8.0
+- Pebble: Upgrade v1.0.0 -> v1.1.5
+- SQLite: Upgrade v1.14.22 -> v1.14.32
+- Redis: Upgrade v9.5.3 -> v9.16.0
+- Bolt: Upgrade v1.4.0-alpha.1 -> v1.4.3
+- Bolt: Fix child buckets appearing in data area
+- Badger, Pebble, Debconf: Remove redundant "Data" navigation layer
+- Badger: Support encrypted databases
+- Badger: Support readonly databases
+- Badger: Add context-menu actions for backup, restore, and compact
+- Pebble: Support readonly databases
+- LevelDB: Add LevelDB database integration
+- Redis: Support SSH tunnel
+- SQLite: Allow editing the primary key column
+- App: New style connection dialog
+- App: Updated keyboard shortcuts (Ctrl+O to open new connection, F5 to refresh, F9 to execute query)
+- App: Add confirmation when refreshing the data table if there are uncommitted changes
+- [⬇️ Download here](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/tag/v0.8.0)
+
+2025-05-04 1.1.0 (qbolt)
+
+- New feature to import/export database as zip archive
+- Upgrade to Qt 6
+- Add keyboard shortcuts for refresh
+- Improve High DPI support
+- Rebuild artefacts with miqt v0.10.0, etcd-io/bbolt v1.4.0, go 1.23, Qt 6.8 (win64)
+- [⬇ Download here](https://git.ivysaur.me/code.ivysaur.me/qbolt/releases/tag/v1.1.0)
+
+2024-10-05 1.0.3 (qbolt)
+
+- Port from hybrid Go/C++ to now using [MIQT](https://github.com/mappu/miqt)
+- Switch Windows build to win64
+- Rebuild artefacts with miqt v0.5.0, etcd-io/bbolt v1.3.11, go 1.19 (deb12), go 1.23 (win64)
+- [⬇ Download here](https://git.ivysaur.me/code.ivysaur.me/qbolt/releases/tag/v1.0.3)
+
+2024-07-18 v0.7.0 (yvbolt)
+
+- SQLite, Bolt: Initial support for editing data (insert, per-cell update, delete)
+- SQLite: Add context menu actions for compact (vacuum), export, and drop table
+- App: New grid widget
+- App: Add refresh button
+- App: Bigger window size, use icons for toolbars, better UI colours for Windows
+- App: Prevent submitting blank queries to database
+- Refactor database interface and error handling
+- [⬇️ Download here](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/tag/v0.7.0)
+
+2024-06-30 v0.6.0 (yvbolt)
+
+- Debconf: Add as supported database
+- SQLite: Support table names containing special characters
+- SQLite: Improvements for experimental command-line driver 
+- Redis: Improve connection dialog window position
+- App: Cosmetic fixes for frame borders, help dialog, and Windows fonts+colours
+- Build: Change compression parameters for release builds
+- Build: Compile CGO with -O2 for release builds
+- [⬇️ Download here](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/tag/v0.6.0)
+
+2024-06-29 v0.5.0 (yvbolt)
+
+- Pebble: Add as supported database
+- Bolt: Support opening as readonly
+- Bolt: Support creating new databases
+- Bolt: Support adding/removing recursive child buckets
+- SQLite: Support custom CLI driver that parses `/usr/bin/sqlite3 -json` output (experimental)
+- Redis: Improve query parser to support quoted strings
+- App: Support refreshing elements in nav tree
+- App: Help menu option to show driver versions
+- App: Add image icons for refresh and close context menu actions
+- Build: Add makefile for cross-compiling release binaries
+- [⬇️ Download here](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/tag/v0.5.0)
+
+2024-06-23 v0.4.0 (yvbolt)
+
+- Redis: Add as supported database
+- Badger: Allow creating in-memory databases
+- App: Allow selecting partial query text to execute
+- App: Allow closing database connections from context menu
+- App: Allow scrolling large content on Properties pane
+- App: Preload recursive navigation
+- App: Automatically switch to selected database when new connection is created
+- App: Add help website link
+- App: Add database logo images
+
+2024-06-25 v0.3.0 (yvbolt)
+
+- Badger: Add BadgerDB v4 as supported database
+- SQLite: Add support for CGo-free SQLite driver under cross-compilation
+- Bolt: Update Bolt to v1.4.0-alpha.1
+- App: Add support for running custom queries
+- App: Add status bar showing currently selected DB
+- App: Fix missing icons in nav when selecting items 
+- App: Fix extra quotemarks when browsing string content of database
+
+2024-06-08 v0.2.0 (yvbolt)
+
+- SQLite: Add SQLite support (now requires CGo)
+- App: Add images for menu and navigation items
+
+2024-06-03 v0.1.0 (yvbolt)
+
+- Initial public release
+
+2020-04-12 1.0.2 (qbolt)
+
+- Rebuild artefacts with etcd-io/bbolt v1.3.5, go 1.15, Qt 5.15, and new GCC versions
+- Switch from hg to Git
+- Use Go modules
+- Add support for building Windows binary in Docker
+- [⬇ Download here](https://git.ivysaur.me/code.ivysaur.me/qbolt/releases/tag/v1.0.2)
+
+2017-06-19 1.0.1 (qbolt)
+
+- Feature: Option to open database as read-only
+- Fix an issue with support for bucket names and keys not surviving UTF-8 roundtrips (now binary-clean)
+- Fix an issue with crashing when deleting a bucket other than the selected one
+- Fix a cosmetic issue with application icon on Windows
+- [⬇ Download here](https://git.ivysaur.me/code.ivysaur.me/qbolt/releases/tag/v1.0.1)
+
+2017-05-21 1.0.0 (qbolt)
+
+- Initial public release
+- The project consists of two parts; a C binding (CGo) for the embeddable Bolt database engine, and a graphical interface built in C++/Qt that links to it.
+- [⬇ Download here](https://git.ivysaur.me/code.ivysaur.me/qbolt/releases/tag/v1.0.0)
+

LICENSE

@@ -1,7 +1,8 @@
 ISC License
 
-Copyright 2024 mappy
-Copyright 2024 The yvbolt Author(s)
+Copyright 2025 mappy
+Copyright 2025 The QBolt Author(s)
+Copyright 2025 The yvbolt Author(s)
 
 Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
 

Makefile

@@ -1,46 +1,68 @@
 SHELL:=/bin/bash
+SOURCES := $(shell find . -name '*.go' -type f)
+GIT_REV := $(shell git describe --exact-match --tags 2>/dev/null || printf "%s-%s" $$(git describe --tags --abbrev=0) $$(git rev-parse HEAD | head -c8))
+.DEFAULT_GOAL := dist
+MIQT_UIC ?= ~/go/bin/miqt-uic
+MIQT_RCC ?= ~/go/bin/miqt-rcc
+MIQT_DOCKER ?= ~/go/bin/miqt-docker
+GO_WINRES ?= ~/go/bin/go-winres
 
-SOURCES=$(find . -name '*.go' -type f)
+.PHONY: generate
+generate:
+	/bin/bash -c '( echo "<RCC>" ; echo "  <qresource prefix=\"/\">" ; for f in assets/* ; do echo "    <file>$$f</file>" ; done ; echo "  </qresource>" ; echo "</RCC>" ) > embed.qrc'
+	$(MIQT_UIC) -InFile mainwindow.ui -OutFile mainwindow.go -Qt6
+	$(MIQT_UIC) -InFile connectionDialog.ui -OutFile connectionDialog.go -Qt6
+	$(MIQT_UIC) -InFile connectionManagerDialog.ui -OutFile connectionManagerDialog.go -Qt6
+	$(MIQT_RCC) -Input embed.qrc -Qt6
 	
-liblcl-2.2.3.zip:
-	rm -f liblcl-2.2.3.zip
-	wget 'https://github.com/ying32/govcl/releases/download/v2.2.3/liblcl-2.2.3.zip'
+.PHONY: designer
+designer:
+	/usr/lib/qt6/bin/designer &
 
-liblcl.so: liblcl-2.2.3.zip
-	echo "154b4e4a1d5137a2ffe51cb4d0bf152dd997c12616ae30862775c0e4f0928e88 liblcl-2.2.3.zip" | sha256sum -c
-	rm -f liblcl.so
-	unzip -j liblcl-2.2.3.zip linux64-gtk2/liblcl.so -d .
-	touch liblcl.so
+.PHONY: optimize-images
+optimize-images:
+	# Strip iCCC colour chunks that libpng/Qt complain about at runtime
+	for f in assets/*.png ; do convert "$$f" -strip "$$f" ; done
+	optipng -quiet -o5 assets/*.png
+	make generate
 
-liblcl.dll: liblcl-2.2.3.zip
-	echo "154b4e4a1d5137a2ffe51cb4d0bf152dd997c12616ae30862775c0e4f0928e88 liblcl-2.2.3.zip" | sha256sum -c
-	rm -f liblcl.dll
-	unzip -j liblcl-2.2.3.zip win64/liblcl.dll -d .
-	touch liblcl.dll
+qbolt: $(SOURCES)
+	# Target a debian-12 baseline build
+	sed -i -re 's/".+"/"$(GIT_REV)"/g' version.go
+	$(MIQT_DOCKER) linux64-go1.26-qt6.4-dynamic -minify-build
+	git checkout -- version.go
+	chmod 755 qbolt
+	upx --lzma qbolt
 
-yvbolt: $(SOURCES)
-	CGO_CFLAGS='-O2 -Wno-return-local-addr' GOOS=linux GOARCH=amd64 CGO_ENABLED=1 go build -trimpath -ldflags '-s -w'
-	chmod 755 yvbolt
+qbolt.exe: $(SOURCES)
+	sed -i -re 's/".+"/"$(GIT_REV)"/g' version.go
+	$(MIQT_DOCKER) win64-cross-go1.26-qt6.5-static -windows-build --tags=windowsqtstatic
+	git checkout -- version.go
+	$(GO_WINRES) patch --in winres.json --no-backup --product-version git-tag --file-version git-tag qbolt.exe
+	upx --lzma qbolt.exe
 
-yvbolt.exe: $(SOURCES)
-	CGO_CFLAGS='-O2 -Wno-return-local-addr' GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc-win32 go build -trimpath -ldflags '-s -w -H windowsgui'
-	upx --lzma yvbolt.exe
+qbolt.apk: $(SOURCES)
+	$(MIQT_DOCKER) android-armv8a-go1.23-qt6.6-dynamic -android-build
 	
-yvbolt.linux64.tar.xz: yvbolt liblcl.so
-	rm -f yvbolt.linux64.tar.xz
-	XZ_OPT='-T0 -9' tar caf yvbolt.linux64.tar.xz --owner=0 --group=0 yvbolt liblcl.so
+qbolt.linux64.tar.xz: qbolt
+	rm -f qbolt.linux64.tar.xz
+	XZ_OPT='-T0 -9' tar caf qbolt.linux64.tar.xz --owner=0 --group=0 qbolt
 	
-yvbolt.win64.zip: yvbolt.exe liblcl.dll
-	rm -f yvbolt.win64.zip
-	zip -9 yvbolt.win64.zip yvbolt.exe liblcl.dll
+qbolt.win64.zip: qbolt.exe
+	rm -f qbolt.win64.zip
+	zip -9 qbolt.win64.zip qbolt.exe
 
 .PHONY: dist
-dist: yvbolt.linux64.tar.xz yvbolt.win64.zip
+dist: qbolt.linux64.tar.xz qbolt.win64.zip
 
 .PHONY: clean
 clean:
-	rm -f yvbolt.exe yvbolt yvbolt.linux64.tar.xz yvbolt.win64.zip
+	git checkout -- version.go
+	rm -f qbolt.exe qbolt qbolt.linux64.tar.xz qbolt.win64.zip
 
-.PHONY: clean-all
-clean-all: clean
-	rm -f liblcl-2.2.3.zip liblcl.so liblcl.dll
+#####
+# Test databases in Docker
+
+.PHONY: test-mongo
+test-mongo:
+	sudo docker run --rm  -p 127.0.0.1:27017:27017 -e MONGO_INITDB_ROOT_USERNAME=root -e MONGO_INITDB_ROOT_PASSWORD=toor mongo:latest

README.md

@@ -1,116 +1,57 @@
-# yvbolt
+# QBolt
 
-A graphical interface for multiple databases using [GoVCL](https://z-kit.cc/en/).
+A graphical interface for multiple databases.
 
 ## Features
 
-- Native desktop application, running on Linux, Windows, and macOS
+- Native desktop application, running on Linux, Windows, macOS, and Android
 - Connect to multiple databases at once
 - Browse table/bucket content
   - Use context menu to perform special table/bucket actions
+- Edit content, and add/delete rows for supported databases
+- View database/bucket statistics and metadata
 - Run custom SQL queries
   - Select text to run partial query
 - Safe handling for non-UTF8 key and data fields
-- Supported databases:
-  - Badger v4
-  - Bolt
-    - Recursive bucket support
-    - Option to open as readonly for shared access
-    - Supports editing
-    - See also [qbolt](https://code.ivysaur.me/qbolt) for more/different functionality
-  - Debconf
-  - Pebble
-  - Redis
-  - SQLite
-    - Drivers: mattn (CGo), modernc.org (no cgo), experimental command-line driver
-    - Supports editing
-    - Integrated vacuum and export commands
+- Hex viewer for binary data
+- Connection Manager saves connections with AEAD AES256-GCM using OS keychain
+
+## Supported databases
+
+There are currently 16 supported databases:
+
+Database     |Read  |Editing  |Query |Connection options  |Context menu actions
+-------------|------|---------|------|--------------------|--------
+Badger v4    |Yes   |Yes      |No    |Encrypted, readonly, in-memory |Backup, restore, compact
+Bitcask      |Yes   |Yes      |No    |Readonly, autorecovery |Backup
+BuntDB       |Yes   |Yes      |No    |In-memory           |Shrink
+Bolt         |Yes   |Yes      |No    |Readonly            |Create/delete child buckets, import/export as zip
+Debconf      |Yes   |No       |No    |                    |
+Freedesktop.org Secret Service |Yes |No | No |            |Unlock, create new collection
+LevelDB      |Yes   |Yes      |No    |Readonly            |
+LMDB         |Yes   |Yes      |No    |Multi-DB, readonly  |Create/delete child databases
+LotusDB      |Yes   |Yes      |No    |                    |
+MongoDB      |Yes   |No       |Yes   |SSH tunnel          |Create/delete child databases and collections
+Pebble       |Yes   |Yes      |No    |Readonly, in-memory |
+Redis        |Yes   |No       |Yes   |SSH tunnel, RESP v3 |
+RoseDB       |Yes   |Yes      |No    |                    |
+SQLite       |Yes   |Yes      |Yes   |**SSH tunnel**, CLI driver, in-memory |Vacuum, export
+SSH Agent    |Yes   |No       |No    |Unix/TCP            |Lock, unlock
+Starskey     |Yes   |Yes      |No    |Compression         |
 
 ## License
 
-The code in this project is licensed under the ISC license (see `LICENSE` file for details).
+The code in this project is licensed under the ISC license (see `LICENSE` file for details) with the following caveats:
 
-This project redistributes images from the famfamfam/silk icon set under the [CC-BY 2.5 license](http://creativecommons.org/licenses/by/2.5/).
+- This project depends on third-party libraries under additional open source licenses.
+- This project redistributes images from the [famfamfam/silk icon set](https://github.com/markjames/famfamfam-silk-icons) under the [CC-BY 2.5 license](http://creativecommons.org/licenses/by/2.5/).
+- This project includes trademarked logo images for each supported database type.
+- The Windows binary is released under LGPL-3+ owing to the static copy of Qt.
 
-This project includes trademarked logo images for each supported database type.
+## Download
 
-## Compiling
-
-1. `CGO_ENABLED=1 go build`
-2. [Download liblcl](https://github.com/ying32/govcl/releases/download/v2.2.3/liblcl-2.2.3.zip) for your platform, or [compile it yourself](https://github.com/ying32/liblcl) (tested with v2.2.3)
-3. Place the liblcl library file in the same directory as `yvbolt`
-4. Run `yvbolt` and use the main menu to open a database
+Get the latest version from [the releases page »](https://git.ivysaur.me/code.ivysaur.me/qbolt/releases)
 
 ## Changelog
 
-2024-07-18 v0.7.0
-
-- SQLite, Bolt: Initial support for editing data (insert, per-cell update, delete)
-- SQLite: Add context menu actions for compact (vacuum), export, and drop table
-- App: New grid widget
-- App: Add refresh button
-- App: Bigger window size, use icons for toolbars, better UI colours for Windows
-- App: Prevent submitting blank queries to database
-- Refactor database interface and error handling
-
-2024-06-30 v0.6.0
-
-- Debconf: Add as supported database
-- SQLite: Support table names containing special characters
-- SQLite: Improvements for experimental command-line driver 
-- Redis: Improve connection dialog window position
-- App: Cosmetic fixes for frame borders, help dialog, and Windows fonts+colours
-- Build: Change compression parameters for release builds
-- Build: Compile CGO with -O2 for release builds
-
-[⬇️ Download for Windows x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.6.0/yvbolt.win64.zip)
-
-[⬇️ Download for Linux x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.6.0/yvbolt.linux64.tar.xz)
-
-2024-06-29 v0.5.0
-
-- Pebble: Add as supported database
-- Bolt: Support opening as readonly
-- Bolt: Support creating new databases
-- Bolt: Support adding/removing recursive child buckets
-- SQLite: Support custom CLI driver that parses `/usr/bin/sqlite3 -json` output (experimental)
-- Redis: Improve query parser to support quoted strings
-- App: Support refreshing elements in nav tree
-- App: Help menu option to show driver versions
-- App: Add image icons for refresh and close context menu actions
-- Build: Add makefile for cross-compiling release binaries
-
-[⬇️ Download for Windows x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.5.0/yvbolt.win64.zip)
-
-[⬇️ Download for Linux x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.5.0/yvbolt.linux64.tar.xz)
-
-2024-06-23 v0.4.0
-
-- Redis: Add as supported database
-- Badger: Allow creating in-memory databases
-- App: Allow selecting partial query text to execute
-- App: Allow closing database connections from context menu
-- App: Allow scrolling large content on Properties pane
-- App: Preload recursive navigation
-- App: Automatically switch to selected database when new connection is created
-- App: Add help website link
-- App: Add database logo images
-
-2024-06-25 v0.3.0
-
-- Badger: Add BadgerDB v4 as supported database
-- SQLite: Add support for CGo-free SQLite driver under cross-compilation
-- Bolt: Update Bolt to v1.4.0-alpha.1
-- App: Add support for running custom queries
-- App: Add status bar showing currently selected DB
-- App: Fix missing icons in nav when selecting items 
-- App: Fix extra quotemarks when browsing string content of database
-
-2024-06-08 v0.2.0
-
-- SQLite: Add SQLite support (now requires CGo)
-- App: Add images for menu and navigation items
-
-2024-06-03 v0.1.0
-
-- Initial public release
+See [the full change history »](https://git.ivysaur.me/code.ivysaur.me/qbolt/src/branch/master/CHANGELOG.md)

TODO

@@ -1,41 +1,114 @@
+- BUG: Connecting to multiple DBs from connection manager: if one has an error, the error popup from the others is lost
+- BUG: ExecQuery being called multiple times on error?
+- Drag and drop database into UI (QBolt parity)
+- Portable mode (portable.txt or portable/ dir)
 - Syntax highlighting in editor
+- Autorefresh
+- Sshagent
+	- want to trigger an async refresh from inside the LDB after lock/unlock
+	- support adding/removing keys (will need per-row actions)
+- SSH: knownhost parser is stricter than openssh, does not support hostname if there is known a knownhost for the IP address
+- Bolt: import/export should support passworded zips
+- Table: BSON view can't see data
+- Table: quick filter
+	- QSortFilterProxyModel
+- Cancellation
+- Loading animations for connection + queries
 - Mutation
-	- Get real primary key for mutation instead of string approximation
-	- Badger: Support insert/update/delete
-	- Pebble: Support insert/update/delete
 	- Debconf: Support insert/update/delete
 	- Redis: Support insert/update/delete
+	- SecretService: Support insert/update/delete
 - Binary data viewer
 	- Detect jpg/png and show as image
 - More DB types
-	- MySQL
+	- MySQL (& MariaDB/TiDB)
 	- Postgres
 		- CLI using psql
+	- Lungo: Mini embeddable Mongo - https://github.com/256dpi/lungo 
 	- MSSQL (recursive navigation for instances)
 	- Other K/V stores from https://github.com/smallnest/kvbench 
 	- Windows registry
+		- Allow entering path for quick navigation
 	- LDAP
-- Connection dialog
-	- SSH tunnels
-	- Badger encryption key dialog
-	- Pebble: connection options dialog
+	- Dolt
+	- Memcache
+		- Listing all keys is not well supported, needs hacks
+	- Chai (built on Pebble) - https://github.com/chaisql/chai
+	- CloverDB (built on Bolt/Badger) - https://github.com/ostafen/clover
+	- APCu - need some sort of hook into the storage engine
+	- VoidDB - https://github.com/voidDB/voidDB
+	- UnisonDB - https://github.com/ankur-anand/unisondb
+	- Etcd
+		- v2: hierarchal
+		- v3: flat key namespace
+	- CSV file
+		- Allow querying with sqlite or duckDB?
+	- Parquet file
+		- Allow querying with duckDB?
+	- SSDB (Redis-compatible)
+	- Time-series DBs
+		- Prometheus
+		- VictoriaMetrics
+		- FrostDB https://github.com/polarsignals/frostdb
+	- https://dbdb.io/browse?programming=go-lang&q=
+	- Maxmind GeoIP MMDB format
+		- https://github.com/maxmind/mmdbwriter
+	- KeePass kdbx
+	- Not-quite-DBs
+		- IRC client
+		- Docker daemon (images, containers, ...)
+		- ssh-agent
+		- ssh known-hosts
+			- golang.org/x/crypto/ssh/knownhosts - already using this package
+	- Generic ODBC, database/sql, ...
+	- Other language DBs
+		- C, C++
+			- Tokyo Cabinet, Kyoto Cabinet, Tkrzw
+				- https://github.com/TerraTech/go-tokyocabinet needs pkg-config tokyocabinet
+				- https://github.com/estraier/tkrzw-go needs pkg-config tkrzw
+			- cdb (DJB's Constant Database)
+			- RocksDB
+				- https://github.com/tecbot/gorocksdb Go bindings, need pkg-config rocksdb
+		- Rust
+			- Stoolap https://github.com/stoolap/stoolap
+			- Rust, needs C binding layer https://github.com/mozilla/cbindgen
+		- JDBC Java databases
+			- H2, HSQLDB, Apache Derby
 - SQLite CLI driver:
 	- Context support
-	- Attach to SSH tunnel
+	- Write support
 	- Configure binary path
+	- Error handling: if an error occurs, listing db tables has problems/shows separators
 	- https://ricardoanderegg.com/posts/sqlite-remote-explorer-gui/
 	- https://github.com/litements/litexplore
-- Debconf: separate groups by first slash in name
-- SQLite: drop table doesn't autorefresh nav since callback is late
-- Build
-	- Build own liblcl binaries in docker
-	- Win32 icon resource
-		- https://github.com/ying32/govcl/tree/master/Tools/winRes
+- Badger:
+	- v1/v2/v3 support
+	- option to use namespace separators for virtual buckets
+- SQLite:
+	- drop table doesn't autorefresh nav since callback is late
+	- more accurate type handling
+		- binary data currently shows as "<<binary>>", edits wrongly
+	- views
+	- other special objects (triggers? udf functions?)
+	- remove current hardcoded LIMIT 1000
+	- attach additional db to same connection
+- LMDB: dupsort mode (duplicate keys / entries-per-key)
+- MongoDB
+	- UI for replica sets, ssl certs, cluster, custom auth database
+	- SSH tunnel: error `ssh: tcpChan: deadline not supported` - needs workaround
+	- Backup/restore
+	- drop db/collection doesn't autorefresh nav since server is asynchronous
+- SSH tunnel
+	- option to use external/system SSH
+	- SSH over Cockpit
 - Performance
 	- Warning if data table is filtered to 1000 rows, or add pagination
 	- Context/interrupt slow queries
-	- Faster virtual rendering
-		- https://github.com/ying32/govcl/blob/master/samples/listviewvirtualdata/main.go
 - Query history
+- Query log
 - Test suite
 	- `CREATE TABLE foo (id integer primary key, aaa text not null, bbb text not null);`
+- Ability to convert database types
+- Export all data from grid
+- Export all data from all buckets within a DB
+- Reconnect

config.go

@@ -0,0 +1,428 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"reflect"
+	"time"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+)
+
+type DBConnector interface {
+	Connect(context.Context) (loadedDatabase, string, error)
+}
+
+type ConnectionConfig struct {
+	Type autoconfig.OneOf
+
+	Badger        *badgerConnection        `ylabel:"BadgerDB v4" yicon:":/assets/vendor_dgraph.png" json:",omitempty"`
+	Bitcask       *bitcaskDBConnection     `yicon:":/assets/vendor_riak.png" json:",omitempty"`
+	Bolt          *boltConfig              `yicon:":/assets/vendor_github.png" json:",omitempty"`
+	BuntDB        *buntDBConnection        `ylabel:"BuntDB" yicon:":/assets/vendor_buntdb.png" json:",omitempty"`
+	Debconf       *debconfConnection       `yicon:":/assets/vendor_debian.png" json:",omitempty"`
+	SecretService *secretServiceConnection `ylabel:"Freedesktop.org Secret Service" yicon:":/assets/vendor_freedesktop.png" json:",omitempty"`
+	LevelDB       *leveldbConnection       `ylabel:"LevelDB" yicon:":/assets/vendor_leveldb.png" json:",omitempty"`
+	LMDB          *lmdbConnection          `yicon:":/assets/vendor_lmdb.png" json:",omitempty"`
+	LotusDB       *lotusDBConnection       `ylabel:"LotusDB" yicon:":/assets/vendor_lotus.png" json:",omitempty"`
+	MongoDB       *mongoConnection         `ylabel:"MongoDB" yicon:":/assets/vendor_mongodb.png" json:",omitempty"`
+	Pebble        *pebbleConnection        `yicon:":/assets/vendor_cockroach.png" json:",omitempty"`
+	Redis         *redisConnectionOptions  `yicon:":/assets/vendor_redis.png" json:",omitempty"`
+	RoseDB        *roseDBConn              `ylabel:"RoseDB" yicon:":/assets/vendor_rosedb.png" json:",omitempty"`
+	SQLite        *sqliteConnection        `ylabel:"SQLite" yicon:":/assets/vendor_sqlite.png" json:",omitempty"`
+	SSHAgent      *sshAgentConn            `yicon:":/assets/vendor_ssh.png" json:",omitempty"`
+	Starskey      *starskeyConnection      `yicon:":/assets/vendor_starskey.png" json:",omitempty"`
+}
+
+func NewConnectionConfig() *ConnectionConfig {
+	return &ConnectionConfig{
+		Type: "Bolt", // favouritism
+	}
+}
+
+// Icon gets the Qt string name for the icon of this database by parsing the
+// 'yicon' struct tag with reflection.
+// If there is no selection or if it's misconfigured, falls back to a generic
+// database icon.
+func (cc *ConnectionConfig) Icon() string {
+	taginfo, ok := reflect.ValueOf(cc).Type().Elem().FieldByName(string(cc.Type))
+	if !ok {
+		return ":/assets/database.png"
+	}
+
+	yicon, ok := taginfo.Tag.Lookup("yicon")
+	if !ok {
+		return ":/assets/database.png"
+	}
+
+	return yicon
+}
+
+func (cc *ConnectionConfig) String() string {
+	if selection, err := cc.selection(); err == nil {
+		if stringer, ok := selection.(fmt.Stringer); ok {
+			return stringer.String()
+		}
+	}
+
+	if string(cc.Type) == "" {
+		return "Not configured"
+	}
+
+	return string(cc.Type)
+}
+
+func (cc *ConnectionConfig) selection() (DBConnector, error) {
+	selection := reflect.ValueOf(cc).Elem().FieldByName(string(cc.Type))
+	if !selection.IsValid() {
+		return nil, fmt.Errorf("Invalid database engine %q", cc.Type)
+	}
+
+	con, ok := selection.Interface().(DBConnector)
+	if !ok {
+		return nil, fmt.Errorf("Can't connect to database on type %q (weird)", cc.Type)
+	}
+
+	return con, nil
+}
+
+func (cc *ConnectionConfig) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	dbc, err := cc.selection()
+	if err != nil {
+		return nil, "", fmt.Errorf("Invalid database engine %q", cc.Type)
+	}
+
+	return dbc.Connect(ctx)
+}
+
+var _ DBConnector = &ConnectionConfig{}
+
+func (f *App) OnMnuConnectClick() {
+	config := NewConnectionConfig()
+	f.showConnectDialog(config)
+}
+
+func (f *App) showConnectDialog(config *ConnectionConfig) {
+
+	// autoconfig.OpenDialog() does not give us a "yes/no" result back from the
+	// dialog, so we still have to custom construct the dialog and use the
+	// formlayout option instead
+
+	dlg := NewConnectDialogUi()
+	dlg.ConnectDialog.SetParent2(f.ui.MainWindow.QWidget, qt.Dialog)
+	dlg.ConnectDialog.SetModal(true)
+	dlg.ConnectDialog.SetAttribute(qt.WA_DeleteOnClose)
+
+	saver := autoconfig.MakeConfigArea(config, dlg.formLayout)
+
+	dlg.ConnectDialog.OnAccept(func(super func()) {
+		// Validate connection before closing
+
+		dlg.buttonBox.SetEnabled(false)
+		defer dlg.buttonBox.SetEnabled(true)
+		dlg.buttonBox.Repaint()
+
+		// Save changes from UI into struct
+		saver()
+
+		// Connect -> get ld
+		ctx := context.Background() // TODO do in background thread?
+		ld, displayName, err := config.Connect(ctx)
+		if err != nil {
+			_ = qt.QMessageBox_Critical(dlg.ConnectDialog.QWidget, APPNAME, fmt.Sprintf("Connecting to %s database: %s", config.Type, err.Error()))
+			// Prevent the dialog from closing: do not call super()
+			return
+		}
+
+		// Add ld to mainwindow
+		f.addTopLevelDatabaseConnection(ld, displayName)
+
+		// Connection OK
+		// Offer to save into connection-manager
+		if res := qt.QMessageBox_Question2(dlg.ConnectDialog.QWidget, APPNAME, "Connection successful. Save the details into Connection Manager?", qt.QMessageBox__Save, qt.QMessageBox__Ignore); res == int(qt.QMessageBox__Save) {
+			f.TrySaveIntoConnectionManager(config, displayName)
+		}
+
+		// Default accept behaviour is: setResult(Accepted), emits onFinished; && Hide()
+		super()
+	})
+
+	dlg.ConnectDialog.Open() // Modal, unlike .Show()
+
+}
+
+type ConnMgrLoadError struct {
+	e error
+}
+
+func (c ConnMgrLoadError) Error() string {
+	return fmt.Sprintf("Failed to load saved connections: %s", c.e)
+}
+
+func (c ConnMgrLoadError) Unwrap() error {
+	return c.e
+}
+
+type ConnMgrSaveError struct {
+	e error
+}
+
+func (c ConnMgrSaveError) Error() string {
+	return fmt.Sprintf("Failed to save connections: %s", c.e)
+}
+
+func (c ConnMgrSaveError) Unwrap() error {
+	return c.e
+}
+
+func (f *App) TrySaveIntoConnectionManager(cc *ConnectionConfig, displayName string) {
+	data, err := f.getConnectionManagerContents()
+	if err != nil {
+		qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrLoadError{err}.Error())
+	}
+
+	if displayName == "" {
+		displayName = cc.String()
+	}
+
+	data.Entries = append(data.Entries, SavedConfigEntry{
+		Description: displayName,
+		Connection:  *cc,
+	})
+
+	err = f.saveConnectionManagerContents(data)
+	if err != nil {
+		qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+	}
+}
+
+func (f *App) OnMnuConnectionManagerClick() {
+
+	data, err := f.getConnectionManagerContents()
+	if err != nil {
+		qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+		return
+	}
+
+	dlg := NewconnectionManagerDialogUi()
+	dlg.connectionManagerDialog.SetParent2(f.ui.MainWindow.QWidget, qt.Dialog)
+	dlg.connectionManagerDialog.SetModal(true)
+	dlg.connectionManagerDialog.SetAttribute(qt.WA_DeleteOnClose)
+	dlg.treeWidget.SetRootIsDecorated(false)
+	dlg.treeWidget.SetSelectionMode(qt.QAbstractItemView__ExtendedSelection)
+
+	addEntryFor := func(entry SavedConfigEntry) {
+		itm := qt.NewQTreeWidgetItem()
+		itm.SetText(0, entry.Description)
+		itm.SetIcon(0, qt.NewQIcon4(entry.Connection.Icon()))
+
+		dlg.treeWidget.AddTopLevelItem(itm)
+	}
+
+	refreshEntryFor := func(idx *qt.QModelIndex, entry SavedConfigEntry) {
+		itm := dlg.treeWidget.ItemFromIndex(idx)
+		itm.SetText(0, entry.Description)                     // Update label
+		itm.SetIcon(0, qt.NewQIcon4(entry.Connection.Icon())) // Update icon
+	}
+
+	// Populate entries
+	for _, entry := range data.Entries {
+		addEntryFor(entry)
+	}
+
+	refreshButtonState := func() {
+		ct := len(dlg.treeWidget.SelectedItems())
+
+		dlg.connectBtn.SetEnabled(ct > 0)
+		dlg.connDelete.SetEnabled(ct > 0)
+		dlg.connEdit.SetEnabled(ct == 1)
+	}
+
+	connectToItem := func(itm *qt.QTreeWidgetItem) bool {
+		ctx := context.Background() // TODO do in background thread?
+
+		dlg.connectBtn.SetEnabled(false)
+		dlg.treeWidget.SetEnabled(false)
+		defer func() {
+			dlg.connectBtn.SetEnabled(true)
+			dlg.treeWidget.SetEnabled(true) // FIXME block the other buttons too!
+		}()
+
+		entry := data.Entries[dlg.treeWidget.IndexFromItem(itm).Row()]
+
+		ld, _, err := entry.Connection.Connect(ctx)
+		if err != nil {
+			_ = qt.QMessageBox_Critical(dlg.connectionManagerDialog.QWidget, APPNAME, fmt.Sprintf("Connecting to %s database: %s", entry.Connection.Type, err.Error()))
+			return false
+		}
+
+		// Add ld to mainwindow
+		// Don't use the displayName from the Connect() function - use the saved
+		// displayname instead
+		f.addTopLevelDatabaseConnection(ld, entry.Description)
+
+		return true
+	}
+
+	dlg.treeWidget.OnItemDoubleClicked(func(itm *qt.QTreeWidgetItem, _ int) {
+		// connect to specific item
+		if connectToItem(itm) {
+			dlg.connectionManagerDialog.Accept()
+		}
+	})
+
+	dlg.connectBtn.OnClicked(func() {
+		// Based on selectedItems, not currentItem
+		itms := dlg.treeWidget.SelectedItems()
+		var ok bool = true
+		for _, itm := range itms {
+			ok = ok && connectToItem(itm) // connect to selected
+		}
+
+		if ok {
+			dlg.connectionManagerDialog.Accept()
+		}
+	})
+
+	dlg.connDelete.SetEnabled(false)
+	dlg.connEdit.SetEnabled(false)
+	dlg.treeWidget.OnItemSelectionChanged(refreshButtonState)
+
+	dlg.connDelete.OnClicked(func() {
+
+		itms := dlg.treeWidget.SelectedItems()
+		for _, itm := range itms {
+
+			idx := dlg.treeWidget.IndexFromItem(itm).Row() // n.b. will dynamically change as the item is removed
+			itm.Delete()
+
+			data.Entries = slice_remove_index(data.Entries, idx)
+
+		}
+
+		// All changes made in both ui + data model
+		// Save data model changes
+		err := f.saveConnectionManagerContents(data)
+		if err != nil {
+			qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+			return
+		}
+	})
+
+	dlg.connEdit.OnClicked(func() {
+		// Edit is based on selectedIndex, not currentIndex
+		items := dlg.treeWidget.SelectedItems()
+		if len(items) != 1 {
+			return
+		}
+
+		idx := dlg.treeWidget.IndexFromItem(items[0])
+
+		row := idx.Row()
+		props := data.Entries[row]
+
+		autoconfig.OpenDialog(&props, dlg.connectionManagerDialog.QWidget, "Editing connection", func() {
+			data.Entries[row] = props
+			refreshEntryFor(idx, props)
+
+			err := f.saveConnectionManagerContents(data)
+			if err != nil {
+				qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+				return
+			}
+
+		})
+	})
+
+	dlg.connAdd.OnClicked(func() {
+
+		obj := SavedConfigEntry{
+			Description: "New connection (" + time.Now().Format(time.DateTime) + ")",
+		}
+		vv := NewConnectionConfig()
+		obj.Connection = *vv
+
+		autoconfig.OpenDialog(&obj, dlg.connectionManagerDialog.QWidget, "New connection", func() {
+
+			data.Entries = append(data.Entries, obj)
+			addEntryFor(obj)
+
+			err := f.saveConnectionManagerContents(data)
+			if err != nil {
+				qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+				return
+			}
+
+		})
+	})
+
+	miniMenu := qt.NewQMenu(dlg.toolsBtn.QWidget)
+	exportAction := miniMenu.AddActionWithText("Export connections...")
+	importAction := miniMenu.AddActionWithText("Import connections...")
+	dlg.toolsBtn.SetMenu(miniMenu)
+	dlg.toolsBtn.SetPopupMode(qt.QToolButton__InstantPopup)
+
+	exportAction.OnTriggered(func() {
+		saveAs := qt.QFileDialog_GetSaveFileName4(dlg.toolsBtn.QWidget, "Export connections...", "", "JSON files (*.json);;All files (*)")
+		if saveAs == "" {
+			return // cancelled
+		}
+
+		jbytes, err := json.MarshalIndent(data, "", "  ")
+		if err != nil {
+			qt.QMessageBox_Warning(dlg.toolsBtn.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+			return
+		}
+
+		err = os.WriteFile(saveAs, jbytes, 0600)
+		if err != nil {
+			qt.QMessageBox_Warning(dlg.toolsBtn.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+			return
+		}
+
+		// OK
+		qt.QMessageBox_Information(dlg.toolsBtn.QWidget, APPNAME, "The connections have been exported successfully.")
+	})
+
+	importAction.OnTriggered(func() {
+		loadFile := qt.QFileDialog_GetOpenFileName4(dlg.toolsBtn.QWidget, "Import connections...", "", "JSON files (*.json);;All files (*)")
+		if loadFile == "" {
+			return // cancelled
+		}
+
+		jbytes, err := os.ReadFile(loadFile)
+		if err != nil {
+			qt.QMessageBox_Warning(dlg.toolsBtn.QWidget, APPNAME, ConnMgrLoadError{err}.Error())
+			return
+		}
+
+		var importData SavedConfig
+		err = json.Unmarshal(jbytes, &importData)
+		if err != nil {
+			qt.QMessageBox_Warning(dlg.toolsBtn.QWidget, APPNAME, ConnMgrLoadError{err}.Error())
+			return
+		}
+
+		// Add to UI
+		for _, newEntry := range importData.Entries {
+			addEntryFor(newEntry)
+		}
+
+		// Add to data model
+		data.Entries = append(data.Entries, importData.Entries...)
+
+		// Save data model to disk
+		err = f.saveConnectionManagerContents(data)
+		if err != nil {
+			qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrSaveError{err}.Error())
+			return
+		}
+	})
+
+	refreshButtonState()
+
+	dlg.connectionManagerDialog.Show()
+}

configSave.go

@@ -0,0 +1,198 @@
+package main
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"github.com/zalando/go-keyring"
+)
+
+type SavedConfigEntry struct {
+	Description string
+	Connection  ConnectionConfig
+}
+
+type SavedConfig struct {
+	UserAgent string // APPNAME/{ver}
+	Entries   []SavedConfigEntry
+}
+
+const (
+	saveSettingsFilename = `settings.dat`
+	keychainUserName     = `settings-encryption-key`
+)
+
+func (f *App) getConnectionManagerContents() (*SavedConfig, error) {
+	cfgd, err := os.UserConfigDir()
+	if err != nil {
+		return nil, err
+	}
+
+	_ = os.MkdirAll(filepath.Join(cfgd, APPNAME), 0700)
+
+	ciphertext, err := os.ReadFile(filepath.Join(cfgd, APPNAME, saveSettingsFilename))
+	if err != nil {
+		if os.IsNotExist(err) {
+			// No file exists. Use blank
+			return &SavedConfig{
+				UserAgent: APPNAME,
+			}, nil
+		}
+
+		return nil, err
+	}
+
+	// Get decryption key from OS keychain
+	// Since we successfully loaded the file on disk, the keychain entry must exist
+
+	details, err := keyring.Get(APPNAME, keychainUserName)
+	if err != nil {
+		return nil, err
+	}
+
+	// Decrypt
+	// The encryption key is random 256 bytes, no need for a KDF
+	encryptionKeyBytes, err := hex.DecodeString(details)
+	if err != nil {
+		return nil, err
+	}
+
+	cc, err := aes.NewCipher(encryptionKeyBytes)
+	if err != nil {
+		return nil, err
+	}
+
+	cw, err := cipher.NewGCMWithRandomNonce(cc)
+	if err != nil {
+		return nil, err
+	}
+
+	plaintext, err := cw.Open(ciphertext[:0], nil, ciphertext, nil) // @ref https://pkg.go.dev/crypto/cipher#AEAD
+	if err != nil {
+		return nil, err
+	}
+
+	var ret SavedConfig
+	err = json.Unmarshal(plaintext, &ret)
+	if err != nil {
+		return nil, err
+	}
+
+	// Before returning the configuration, sort the entries alphabetically
+	sort.Slice(ret.Entries, func(i, j int) bool {
+		// FIXME there is probably a slightly more efficient way of doing this
+		return strings.ToLower(ret.Entries[i].Description) < strings.ToLower(ret.Entries[j].Description)
+	})
+
+	// Success
+	return &ret, nil
+}
+
+func (f *App) saveConnectionManagerContents(sc *SavedConfig) error {
+	cfgd, err := os.UserConfigDir()
+	if err != nil {
+		return err
+	}
+
+	// If the file exists already, we must have an existing encryption key
+	var exists bool
+	savePath := filepath.Join(cfgd, APPNAME, saveSettingsFilename)
+	if _, err := os.Stat(savePath); err != nil {
+		if os.IsNotExist(err) {
+
+			_ = os.MkdirAll(filepath.Join(cfgd, APPNAME), 0700)
+			exists = false
+		} else {
+			return err // some other real error
+		}
+	} else {
+		exists = true
+	}
+
+	details, err := keyring.Get(APPNAME, keychainUserName)
+	if err != nil {
+		if errors.Is(err, keyring.ErrNotFound) {
+			// Does not exist in keyring
+			// That is OK if there is no saved file yet / we can generate a random
+			// key. But if the file does already exist, this is fatal
+			if exists {
+				// File exists on disk but there is no encryption key to parse it
+				// Fatal
+				return fmt.Errorf(
+					"There is already a saved file on disk (%q), but there is no matching encryption key in the system keychain provider. Has your keychain been destroyed? To confirm, please delete the saved settings file.",
+					savePath,
+				)
+			} else {
+				// Generate new
+				// 256 bits (32 bytes) of cryto-random data, and then hex encode
+				randBuff := make([]byte, 32)
+				n, err := rand.Read(randBuff)
+				if err != nil {
+					return err
+				}
+				if n != len(randBuff) {
+					return io.ErrShortWrite
+				}
+
+				details = hex.EncodeToString(randBuff)
+				err = keyring.Set(APPNAME, keychainUserName, details)
+				if err != nil {
+					return err
+				}
+
+				// Safe
+			}
+		} else {
+			// Real keychain error
+			return err
+		}
+	}
+
+	// Force update the saved version
+	sc.UserAgent = APPNAME + `/` + appVersion // e.g. QBolt/v0.0.0-devel
+
+	// Marshal
+
+	plaintext, err := json.Marshal(sc)
+	if err != nil {
+		return err
+	}
+
+	// Encrypt
+
+	encryptionKeyBytes, err := hex.DecodeString(details)
+	if err != nil {
+		return err
+	}
+
+	cc, err := aes.NewCipher(encryptionKeyBytes)
+	if err != nil {
+		return err
+	}
+
+	cw, err := cipher.NewGCMWithRandomNonce(cc)
+	if err != nil {
+		return err
+	}
+
+	ciphertext := cw.Seal(plaintext[:0], nil, plaintext, nil)
+
+	// Save to disk
+	err = os.WriteFile(savePath, ciphertext, 0600)
+	if err != nil {
+		return err
+	}
+
+	// Save OK
+	return nil
+}

connectionDialog.go

@@ -0,0 +1,69 @@
+// Generated by miqt-uic. To update this file, edit the .ui file in
+// Qt Designer, and then run 'go generate'.
+//
+//go:generate miqt-uic -InFile connectionDialog.ui -OutFile connectionDialog.go -Qt6
+
+package main
+
+import (
+	qt "github.com/mappu/miqt/qt6"
+)
+
+type ConnectDialogUi struct {
+	ConnectDialog *qt.QDialog
+	gridLayout    *qt.QGridLayout
+	buttonBox     *qt.QDialogButtonBox
+	formWidget    *qt.QWidget
+	formLayout    *qt.QFormLayout
+}
+
+// NewConnectDialogUi creates all Qt widget classes for ConnectDialog.
+func NewConnectDialogUi() *ConnectDialogUi {
+	ui := &ConnectDialogUi{}
+	ui.ConnectDialog = qt.NewQDialog(nil)
+	ConnectDialog__objectName := qt.NewQAnyStringView3("ConnectDialog")
+	ui.ConnectDialog.SetObjectName(*ConnectDialog__objectName)
+	ConnectDialog__objectName.Delete() // setter copied value
+	ui.ConnectDialog.Resize(385, 364)
+	icon0 := qt.NewQIcon()
+	icon0.AddFile4(":/assets/database_add.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.ConnectDialog.SetWindowIcon(icon0)
+	ui.gridLayout = qt.NewQGridLayout(ui.ConnectDialog.QWidget)
+	gridLayout__objectName := qt.NewQAnyStringView3("gridLayout")
+	ui.gridLayout.SetObjectName(*gridLayout__objectName)
+	gridLayout__objectName.Delete() // setter copied value
+	ui.gridLayout.SetContentsMargins(11, 11, 11, 11)
+	ui.gridLayout.SetSpacing(6)
+	ui.buttonBox = qt.NewQDialogButtonBox(ui.ConnectDialog.QWidget)
+	buttonBox__objectName := qt.NewQAnyStringView3("buttonBox")
+	ui.buttonBox.SetObjectName(*buttonBox__objectName)
+	buttonBox__objectName.Delete() // setter copied value
+	ui.buttonBox.SetOrientation(qt.Horizontal)
+	ui.buttonBox.SetStandardButtons(qt.QDialogButtonBox__Cancel | qt.QDialogButtonBox__Ok)
+
+	ui.gridLayout.AddWidget2(ui.buttonBox.QWidget, 2, 0)
+	ui.formWidget = qt.NewQWidget(ui.ConnectDialog.QWidget)
+	formWidget__objectName := qt.NewQAnyStringView3("formWidget")
+	ui.formWidget.SetObjectName(*formWidget__objectName)
+	formWidget__objectName.Delete() // setter copied value
+	ui.formLayout = qt.NewQFormLayout(ui.formWidget)
+	formLayout__objectName := qt.NewQAnyStringView3("formLayout")
+	ui.formLayout.SetObjectName(*formLayout__objectName)
+	formLayout__objectName.Delete() // setter copied value
+	ui.formLayout.SetContentsMargins(0, 0, 0, 11)
+	ui.formLayout.SetSpacing(6)
+
+	ui.gridLayout.AddWidget2(ui.formWidget, 1, 0)
+
+	ui.buttonBox.OnAccepted(ui.ConnectDialog.Accept)
+	ui.buttonBox.OnRejected(ui.ConnectDialog.Reject)
+
+	ui.Retranslate()
+
+	return ui
+}
+
+// Retranslate reapplies all text translations.
+func (ui *ConnectDialogUi) Retranslate() {
+	ui.ConnectDialog.SetWindowTitle(qt.QCoreApplication_Tr("Connect..."))
+}

connectionDialog.ui

@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ConnectDialog</class>
+ <widget class="QDialog" name="ConnectDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>385</width>
+    <height>364</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Connect...</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="embed.qrc">
+    <normaloff>:/assets/database_add.png</normaloff>:/assets/database_add.png</iconset>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="2" column="0">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Orientation::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::StandardButton::Cancel|QDialogButtonBox::StandardButton::Ok</set>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QWidget" name="formWidget" native="true">
+     <layout class="QFormLayout" name="formLayout">
+      <property name="leftMargin">
+       <number>0</number>
+      </property>
+      <property name="topMargin">
+       <number>0</number>
+      </property>
+      <property name="rightMargin">
+       <number>0</number>
+      </property>
+     </layout>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="embed.qrc"/>
+ </resources>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>ConnectDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>ConnectDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

connectionManagerDialog.go

@@ -0,0 +1,136 @@
+// Generated by miqt-uic. To update this file, edit the .ui file in
+// Qt Designer, and then run 'go generate'.
+//
+//go:generate miqt-uic -InFile connectionManagerDialog.ui -OutFile connectionManagerDialog.go -Qt6
+
+package main
+
+import (
+	qt "github.com/mappu/miqt/qt6"
+)
+
+type connectionManagerDialogUi struct {
+	connectionManagerDialog *qt.QDialog
+	verticalLayout_2        *qt.QVBoxLayout
+	horizontalLayout        *qt.QHBoxLayout
+	treeWidget              *qt.QTreeWidget
+	verticalLayout          *qt.QVBoxLayout
+	connAdd                 *qt.QToolButton
+	connEdit                *qt.QToolButton
+	connDelete              *qt.QToolButton
+	verticalSpacer          *qt.QSpacerItem
+	horizontalLayout_2      *qt.QHBoxLayout
+	toolsBtn                *qt.QToolButton
+	horizontalSpacer        *qt.QSpacerItem
+	connectBtn              *qt.QPushButton
+}
+
+// NewconnectionManagerDialogUi creates all Qt widget classes for connectionManagerDialog.
+func NewconnectionManagerDialogUi() *connectionManagerDialogUi {
+	ui := &connectionManagerDialogUi{}
+	ui.connectionManagerDialog = qt.NewQDialog(nil)
+	connectionManagerDialog__objectName := qt.NewQAnyStringView3("connectionManagerDialog")
+	ui.connectionManagerDialog.SetObjectName(*connectionManagerDialog__objectName)
+	connectionManagerDialog__objectName.Delete() // setter copied value
+	ui.connectionManagerDialog.Resize(332, 449)
+	ui.verticalLayout_2 = qt.NewQVBoxLayout(ui.connectionManagerDialog.QWidget)
+	verticalLayout_2__objectName := qt.NewQAnyStringView3("verticalLayout_2")
+	ui.verticalLayout_2.SetObjectName(*verticalLayout_2__objectName)
+	verticalLayout_2__objectName.Delete() // setter copied value
+	ui.verticalLayout_2.SetContentsMargins(11, 11, 11, 11)
+	ui.verticalLayout_2.SetSpacing(6)
+	ui.horizontalLayout = qt.NewQHBoxLayout2()
+	horizontalLayout__objectName := qt.NewQAnyStringView3("horizontalLayout")
+	ui.horizontalLayout.SetObjectName(*horizontalLayout__objectName)
+	horizontalLayout__objectName.Delete() // setter copied value
+	ui.horizontalLayout.SetContentsMargins(0, 0, 0, 0)
+	ui.horizontalLayout.SetSpacing(6)
+	ui.treeWidget = qt.NewQTreeWidget(ui.connectionManagerDialog.QWidget)
+	treeWidget__objectName := qt.NewQAnyStringView3("treeWidget")
+	ui.treeWidget.SetObjectName(*treeWidget__objectName)
+	treeWidget__objectName.Delete() // setter copied value
+
+	ui.horizontalLayout.AddWidget(ui.treeWidget.QWidget)
+	ui.verticalLayout = qt.NewQVBoxLayout2()
+	verticalLayout__objectName := qt.NewQAnyStringView3("verticalLayout")
+	ui.verticalLayout.SetObjectName(*verticalLayout__objectName)
+	verticalLayout__objectName.Delete() // setter copied value
+	ui.verticalLayout.SetContentsMargins(0, 0, 0, 0)
+	ui.verticalLayout.SetSpacing(6)
+	ui.connAdd = qt.NewQToolButton(ui.connectionManagerDialog.QWidget)
+	connAdd__objectName := qt.NewQAnyStringView3("connAdd")
+	ui.connAdd.SetObjectName(*connAdd__objectName)
+	connAdd__objectName.Delete() // setter copied value
+	icon0 := qt.NewQIcon()
+	icon0.AddFile4(":/assets/add.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.connAdd.SetIcon(icon0)
+	ui.connAdd.SetAutoRaise(true)
+
+	ui.verticalLayout.AddWidget(ui.connAdd.QWidget)
+	ui.connEdit = qt.NewQToolButton(ui.connectionManagerDialog.QWidget)
+	connEdit__objectName := qt.NewQAnyStringView3("connEdit")
+	ui.connEdit.SetObjectName(*connEdit__objectName)
+	connEdit__objectName.Delete() // setter copied value
+	icon1 := qt.NewQIcon()
+	icon1.AddFile4(":/assets/pencil.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.connEdit.SetIcon(icon1)
+	ui.connEdit.SetAutoRaise(true)
+
+	ui.verticalLayout.AddWidget(ui.connEdit.QWidget)
+	ui.connDelete = qt.NewQToolButton(ui.connectionManagerDialog.QWidget)
+	connDelete__objectName := qt.NewQAnyStringView3("connDelete")
+	ui.connDelete.SetObjectName(*connDelete__objectName)
+	connDelete__objectName.Delete() // setter copied value
+	icon2 := qt.NewQIcon()
+	icon2.AddFile4(":/assets/delete.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.connDelete.SetIcon(icon2)
+	ui.connDelete.SetAutoRaise(true)
+
+	ui.verticalLayout.AddWidget(ui.connDelete.QWidget)
+	ui.verticalSpacer = qt.NewQSpacerItem4(20, 40, qt.QSizePolicy__Minimum, qt.QSizePolicy__Expanding)
+
+	ui.verticalLayout.AddItem(ui.verticalSpacer.QLayoutItem)
+
+	ui.horizontalLayout.AddLayout(ui.verticalLayout.QLayout)
+
+	ui.verticalLayout_2.AddLayout(ui.horizontalLayout.QLayout)
+	ui.horizontalLayout_2 = qt.NewQHBoxLayout2()
+	horizontalLayout_2__objectName := qt.NewQAnyStringView3("horizontalLayout_2")
+	ui.horizontalLayout_2.SetObjectName(*horizontalLayout_2__objectName)
+	horizontalLayout_2__objectName.Delete() // setter copied value
+	ui.horizontalLayout_2.SetContentsMargins(0, 0, 0, 0)
+	ui.horizontalLayout_2.SetSpacing(6)
+	ui.toolsBtn = qt.NewQToolButton(ui.connectionManagerDialog.QWidget)
+	toolsBtn__objectName := qt.NewQAnyStringView3("toolsBtn")
+	ui.toolsBtn.SetObjectName(*toolsBtn__objectName)
+	toolsBtn__objectName.Delete() // setter copied value
+	ui.toolsBtn.SetAutoRaise(true)
+
+	ui.horizontalLayout_2.AddWidget(ui.toolsBtn.QWidget)
+	ui.horizontalSpacer = qt.NewQSpacerItem4(40, 20, qt.QSizePolicy__Expanding, qt.QSizePolicy__Minimum)
+
+	ui.horizontalLayout_2.AddItem(ui.horizontalSpacer.QLayoutItem)
+	ui.connectBtn = qt.NewQPushButton(ui.connectionManagerDialog.QWidget)
+	connectBtn__objectName := qt.NewQAnyStringView3("connectBtn")
+	ui.connectBtn.SetObjectName(*connectBtn__objectName)
+	connectBtn__objectName.Delete() // setter copied value
+	icon3 := qt.NewQIcon()
+	icon3.AddFile4(":/assets/database_lightning.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.connectBtn.SetIcon(icon3)
+
+	ui.horizontalLayout_2.AddWidget(ui.connectBtn.QWidget)
+
+	ui.verticalLayout_2.AddLayout(ui.horizontalLayout_2.QLayout)
+
+	ui.Retranslate()
+
+	return ui
+}
+
+// Retranslate reapplies all text translations.
+func (ui *connectionManagerDialogUi) Retranslate() {
+	ui.connectionManagerDialog.SetWindowTitle(qt.QCoreApplication_Tr("Connection Manager"))
+	ui.treeWidget.HeaderItem().SetText(0, qt.QTreeWidget_Tr("Connection"))
+	ui.toolsBtn.SetText(qt.QDialog_Tr("Tools"))
+	ui.connectBtn.SetText(qt.QDialog_Tr("Connect"))
+}

connectionManagerDialog.ui

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>connectionManagerDialog</class>
+ <widget class="QDialog" name="connectionManagerDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>332</width>
+    <height>449</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Connection Manager</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QTreeWidget" name="treeWidget">
+       <column>
+        <property name="text">
+         <string>Connection</string>
+        </property>
+       </column>
+      </widget>
+     </item>
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <widget class="QToolButton" name="connAdd">
+         <property name="icon">
+          <iconset resource="embed.qrc">
+           <normaloff>:/assets/add.png</normaloff>:/assets/add.png</iconset>
+         </property>
+         <property name="autoRaise">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QToolButton" name="connEdit">
+         <property name="icon">
+          <iconset resource="embed.qrc">
+           <normaloff>:/assets/pencil.png</normaloff>:/assets/pencil.png</iconset>
+         </property>
+         <property name="autoRaise">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QToolButton" name="connDelete">
+         <property name="icon">
+          <iconset resource="embed.qrc">
+           <normaloff>:/assets/delete.png</normaloff>:/assets/delete.png</iconset>
+         </property>
+         <property name="autoRaise">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Orientation::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <widget class="QToolButton" name="toolsBtn">
+       <property name="text">
+        <string>Tools</string>
+       </property>
+       <property name="autoRaise">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Orientation::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="connectBtn">
+       <property name="text">
+        <string>Connect</string>
+       </property>
+       <property name="icon">
+        <iconset resource="embed.qrc">
+         <normaloff>:/assets/database_lightning.png</normaloff>:/assets/database_lightning.png</iconset>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="embed.qrc"/>
+ </resources>
+ <connections/>
+</ui>

db_badger.go

@@ -1,52 +1,37 @@
 package main
 
 import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
 	"fmt"
+	"os"
 	"path/filepath"
-	"unsafe"
 
 	"github.com/dgraph-io/badger/v4"
-	"github.com/ying32/govcl/vcl"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
 )
 
 type badgerLoadedDatabase struct {
-	displayName string
-	db          *badger.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
-}
-
-func (ld *badgerLoadedDatabase) DisplayName() string {
-	return ld.displayName
+	db *badger.DB
 }
 
 func (ld *badgerLoadedDatabase) DriverName() string {
-	return "Badger v4"
+	return "BadgerDB v4"
 }
 
-func (ld *badgerLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
-}
-
-func (ld *badgerLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *badgerLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
-
-	// Load properties
-
+func (ld *badgerLoadedDatabase) Properties(bucketPath []string) (string, error) {
 	content := fmt.Sprintf("Table statistics: %#v", ld.db.Tables())
-	f.propertiesBox.SetText(content)
+	return content, nil
+}
+
+func (ld *badgerLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
 
 	// Load data
 	// Badger always uses Key + Value as the columns
 
-	colKey := f.contentBox.Columns().Add()
-	colKey.Title().SetCaption("Key")
-	colVal := f.contentBox.Columns().Add()
-	colVal.Title().SetCaption("Value")
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
 
 	err := ld.db.View(func(txn *badger.Txn) error {
 
@@ -60,11 +45,7 @@ func (ld *badgerLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error
 			item := it.Item()
 			k := item.Key()
 			err := item.Value(func(v []byte) error {
-				rpos := f.contentBox.RowCount()
-				f.contentBox.SetRowCount(rpos + 1)
-				f.contentBox.SetCells(0, rpos, formatUtf8(k))
-				f.contentBox.SetCells(1, rpos, formatUtf8(v))
-
+				f.AddRow_PK_Data(k, k, v)
 				return nil
 			})
 			if err != nil {
@@ -78,74 +59,150 @@ func (ld *badgerLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error
 	}
 
 	// Valid
-	vcl_stringgrid_columnwidths(f.contentBox)
-	f.contentBox.SetEnabled(true)
+	f.Ready()
 	return nil
 }
 
-func (ld *badgerLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
-	// In the Badger implementation, there is only one child: "Data"
-	if len(ndata.bucketPath) == 0 {
-		return []string{"Data"}, nil
-
-	} else {
-		// No children deeper than that
-		return []string{}, nil
-	}
+func (n *badgerLoadedDatabase) ApplyChanges(f *tableState, bucketPath []string) error {
+	return n.db.Update(func(txn *badger.Txn) error {
+		return kvstore_ApplyChanges(f, txn.Set, txn.Delete)
+	})
 }
 
-func (ld *badgerLoadedDatabase) NavContext(ndata *navData) ([]contextAction, error) {
-	return nil, nil // No special actions are supported
+func (ld *badgerLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *badgerLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
+	return []contextAction{
+		{Name: "Export backup...", Callback: ld.ExportBackup},
+		{Name: "Import backup...", Callback: ld.ImportBackup},
+		{Name: "Compact", Callback: ld.CompactGC},
+	}, nil
+}
+
+func (ld *badgerLoadedDatabase) ExportBackup(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	saveAs := qt.QFileDialog_GetSaveFileName4(sender.TreeWidget().QWidget, "Export backup...", "", "Badger database backups (*.bak);;All files (*)")
+	if saveAs == "" {
+		return nil
+	}
+
+	fh, err := os.OpenFile(saveAs, os.O_CREATE|os.O_RDWR|os.O_EXCL, 0600)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	_, err = ld.db.Backup(fh, 0)
+	return err
+}
+
+func (ld *badgerLoadedDatabase) ImportBackup(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	openPath := qt.QFileDialog_GetOpenFileName4(sender.TreeWidget().QWidget, "Import backup...", "", "Badger database backups (*.bak);;All files (*)")
+	if openPath == "" {
+		return nil
+	}
+
+	fh, err := os.Open(openPath)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	return ld.db.Load(fh, 16) // concurrency - just a guess
+}
+
+func (ld *badgerLoadedDatabase) CompactGC(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	// Move data from value log into levels ->
+	err := ld.db.RunValueLogGC(0.0001) // Compact if we would save 0.1% of disk space
+	if err != nil {
+		return fmt.Errorf("RunValueLogGC: %w", err)
+	}
+
+	// -> then flatten all levels
+	err = ld.db.Flatten(4)
+	if err != nil {
+		return fmt.Errorf("Flatten: %w", err)
+	}
+
+	return nil
 }
 
 func (ld *badgerLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
-var _ loadedDatabase = &badgerLoadedDatabase{} // interface assertion
+var _ loadedDatabase = &badgerLoadedDatabase{}         // interface assertion
+var _ editableLoadedDatabase = &badgerLoadedDatabase{} // interface assertion
 
 //
 
-func (f *TMainForm) badgerAddDatabaseFromMemory() {
-	f.badgerAddDatabaseFrom(badger.DefaultOptions("").WithInMemory(true))
+type badgerConnection struct {
+	Type autoconfig.OneOf
+	Disk *struct {
+		Directory  autoconfig.ExistingDirectory
+		Readonly   bool
+		Encryption *encryptionKey
+	} `json:",omitempty"`
+	Memory *struct{} `json:",omitempty"`
 }
 
-func (f *TMainForm) badgerAddDatabaseFromDirectory(path string) {
-	f.badgerAddDatabaseFrom(badger.DefaultOptions(path))
+type encryptionKey struct {
+	Method autoconfig.EnumList `yenum:"Text;;Hex;;Passphrase (SHA256 KDF to AES-256)"`
+	Key    autoconfig.Password
 }
 
-func (f *TMainForm) badgerAddDatabaseFrom(opts badger.Options) {
-	// TODO load in background thread to stop blocking the UI
-	db, err := badger.Open(opts)
-	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database: %s", err.Error()))
-		return
+func (e encryptionKey) Get() ([]byte, error) {
+	switch e.Method {
+	case 0: // Text
+		return []byte(e.Key), nil
+
+	case 1: // Hex
+		// For Badger, the input must be 16/24/32 bytes for AES-128/192/256
+		// The library checks this, we don't need to
+		return hex.DecodeString(string(e.Key))
+
+	case 2: // Passphrase (SHA256 KDF to AES-256)
+		hasher := sha256.New()
+		hasher.Write([]byte(e.Key))
+		return hasher.Sum(nil), nil
+
+	default:
+		return nil, fmt.Errorf("Unsupported encoding method for encryption key")
+	}
+}
+
+func (bdc *badgerConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	if bdc.Disk != nil {
+		opts := badger.DefaultOptions(string(bdc.Disk.Directory))
+		opts.ReadOnly = bdc.Disk.Readonly
+		opts.MetricsEnabled = false
+
+		if bdc.Disk.Encryption != nil {
+			ehx, err := bdc.Disk.Encryption.Get()
+			if err != nil {
+				return nil, "", fmt.Errorf("Loading encryption key: %w", err)
+			}
+
+			if !(len(ehx) == 16 || len(ehx) == 24 || len(ehx) == 32) {
+				return nil, "", fmt.Errorf("Encryption key must be 16/24/32 bytes long, got %d", len(ehx))
+			}
+			opts.EncryptionKey = ehx
+		}
+
+		db, err := badger.Open(opts)
+		if err != nil {
+			return nil, "", err
+		}
+
+		return &badgerLoadedDatabase{db: db}, filepath.Base(string(bdc.Disk.Directory)), nil
+	} else { // memory
+		db, err := badger.Open(badger.DefaultOptions("").WithInMemory(true))
+		if err != nil {
+			return nil, "", err
+		}
+
+		return &badgerLoadedDatabase{db: db}, `:memory:`, nil // SQLite-style naming
+
 	}
-
-	ld := &badgerLoadedDatabase{
-		db: db,
-	}
-
-	if opts.Dir == "" {
-		ld.displayName = ":memory:" // SQLite-style naming
-	} else {
-		ld.displayName = filepath.Base(opts.Dir)
-	}
-
-	ld.nav = f.Buckets.Items().Add(nil, ld.displayName)
-	ld.nav.SetHasChildren(true) // dynamically populate in OnNavExpanding
-	ld.nav.SetImageIndex(imgDatabase)
-	ld.nav.SetSelectedIndex(imgDatabase)
-	navData := &navData{
-		ld:             ld,
-		childrenLoaded: false,      // will be loaded dynamically
-		bucketPath:     []string{}, // empty = root
-	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
 }

db_bitcask.go

@@ -0,0 +1,113 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"go.mills.io/bitcask/v2"
+)
+
+type bitcaskLdb struct {
+	db *bitcask.Bitcask
+}
+
+func (ld *bitcaskLdb) DriverName() string {
+	return "Bitcask"
+}
+
+func (ld *bitcaskLdb) Properties(bucketPath []string) (string, error) {
+	stats, err := ld.db.Stats()
+	if err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("Database: %s\n\nStats:\n%#v\n", ld.db.Path(), stats), nil
+}
+
+func (ld *bitcaskLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	cur := ld.db.Iterator()
+	defer cur.Close()
+
+	for {
+		itm, err := cur.Next()
+		if err != nil {
+			if err == bitcask.ErrStopIteration {
+				break // OK
+			}
+			return err
+		}
+
+		f.AddRow_PK_Data([]byte(itm.Key()), []byte(itm.Key()), []byte(itm.Value()))
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (n *bitcaskLdb) ApplyChanges(f *tableState, bucketPath []string) error {
+	return kvstore_ApplyChanges(
+		f,
+		func(k, v []byte) error { return n.db.Put(bitcask.Key(k), bitcask.Value(v)) },
+		func(k []byte) error { return n.db.Delete(bitcask.Key(k)) },
+	)
+}
+
+func (ld *bitcaskLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *bitcaskLdb) actionBackup(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	backupDir := qt.QFileDialog_GetExistingDirectory3(sender.TreeWidget().QWidget, APPNAME, "Select an output directory to backup to...")
+	if backupDir == "" {
+		return nil // cancelled
+	}
+
+	return ld.db.Backup(backupDir)
+}
+
+func (ld *bitcaskLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return []contextAction{
+		{"Backup...", ld.actionBackup},
+	}, nil
+}
+
+func (ld *bitcaskLdb) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &bitcaskLdb{}         // interface assertion
+var _ editableLoadedDatabase = &bitcaskLdb{} // interface assertion
+
+//
+
+type bitcaskDBConnection struct {
+	Directory    autoconfig.ExistingDirectory
+	Readonly     bool
+	AutoRecovery bool
+}
+
+func (c *bitcaskDBConnection) Reset() {
+	c.AutoRecovery = true
+}
+
+func (c *bitcaskDBConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	db, err := bitcask.Open(
+		string(c.Directory),
+		bitcask.WithOpenReadonly(c.Readonly),
+		bitcask.WithAutoRecovery(c.AutoRecovery),
+	)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &bitcaskLdb{db: db}, filepath.Base(string(c.Directory)), nil
+}

db_bolt.go

@@ -1,65 +1,84 @@
 package main
 
 import (
+	"bytes"
+	"context"
 	"errors"
 	"fmt"
 	"path/filepath"
 	"sort"
 	"strings"
 	"time"
-	"unsafe"
 
-	"github.com/ying32/govcl/vcl"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
 	"go.etcd.io/bbolt"
 	"go.etcd.io/bbolt/version"
 )
 
-const (
-	boltFilter = "Bolt database|*.db|All files|*.*"
-)
-
 type boltLoadedDatabase struct {
-	displayName string
-	path        string
-	db          *bbolt.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
+	path string
+	db   *bbolt.DB
 }
 
-func (ld *boltLoadedDatabase) DisplayName() string {
-	return ld.displayName
+type boltConfig struct {
+	Path     autoconfig.ExistingFile `yfilter:"Bolt database (*.db);;All files (*)"`
+	Readonly bool
+}
+
+func (bc *boltConfig) String() string { // n.b. only used for default names in connection manager
+	return filepath.Base(string(bc.Path))
+}
+
+func (bc *boltConfig) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	opts := bbolt.Options{
+		Timeout:  1 * time.Second,
+		ReadOnly: bc.Readonly,
+	}
+
+	db, err := bbolt.Open(string(bc.Path), 0644, &opts)
+	if err != nil {
+		return nil, "", fmt.Errorf("Failed to load database '%s': %w", bc.Path, err)
+	}
+
+	displayName := filepath.Base(string(bc.Path))
+	if bc.Readonly {
+		displayName += " (read-only)"
+	}
+
+	ld := &boltLoadedDatabase{
+		path: string(bc.Path),
+		db:   db,
+	}
+
+	return ld, displayName, nil
 }
 
 func (ld *boltLoadedDatabase) DriverName() string {
 	return "Bolt " + version.Version
 }
 
-func (ld *boltLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
+func (ld *boltLoadedDatabase) Properties(bucketPath []string) (string, error) {
+	content := fmt.Sprintf("Selected database: %#v", ld.db.Stats())
+	return content, nil
 }
 
-func (ld *boltLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *boltLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
+func (ld *boltLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
 
 	// Load properties
 
-	bucketDisplayName := strings.Join(ndata.bucketPath, `/`)
-	content := fmt.Sprintf("Selected database: %#v\n\n\nSelected bucket: %q\n", ld.db.Stats(), bucketDisplayName)
-	f.propertiesBox.SetText(content)
+	if len(bucketPath) == 0 {
+		return nil // Can't have data outside of the top bucket
+	}
 
 	// Load data
 	// Bolt always uses Key + Value as the columns
-	colKey := f.contentBox.Columns().Add()
-	colKey.Title().SetCaption("Key")
-	colVal := f.contentBox.Columns().Add()
-	colVal.Title().SetCaption("Value")
+
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
 
 	err := ld.db.View(func(tx *bbolt.Tx) error {
-		b := boltTargetBucket(tx, ndata.bucketPath)
+		b := boltTargetBucket(tx, bucketPath)
 		if b == nil {
 			// no such bucket
 			return nil
@@ -68,10 +87,14 @@ func (ld *boltLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
 		// Valid
 		c := b.Cursor()
 		for k, v := c.First(); k != nil; k, v = c.Next() {
-			rpos := f.contentBox.RowCount()
-			f.contentBox.SetRowCount(rpos + 1)
-			f.contentBox.SetCells(0, rpos, formatUtf8(k))
-			f.contentBox.SetCells(1, rpos, formatUtf8(v))
+
+			// Nil values mean it's a bucket
+			// Hide from the data table, it will be shown in the nav instead
+			if v == nil {
+				continue
+			}
+
+			f.AddRow_PK_Data(k, k, v)
 		}
 		return nil
 	})
@@ -80,85 +103,120 @@ func (ld *boltLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
 	}
 
 	// Valid
-	vcl_stringgrid_columnwidths(f.contentBox)
-	f.contentBox.SetEnabled(true)
+	f.Ready()
 	return nil
 }
 
-func (n *boltLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) error {
-	if n.db.IsReadOnly() {
-		return errors.New("Database was opened read-only")
+// kvstore_ApplyChanges is a helper function to apply edits to K/V stores that
+// can use a common abstraction.
+// It always uses the "popupData" type i.e. []byte.
+func kvstore_ApplyChanges(f *tableState, Put func(k, v []byte) error, Delete func(k []byte) error) error {
+
+	// Columns are two binColumn
+	keyCol := f.columns[0].(*binColumn)
+	valCol := f.columns[1].(*binColumn)
+
+	// Edit
+	for rowid, _ /*editcells*/ := range f.updateRows {
+		k_orig := f.primaryKeys[rowid]
+		k_new := keyCol.vals[rowid]
+		v := valCol.vals[rowid]
+
+		if !bytes.Equal(k_orig, k_new) {
+			// Editing the primary key
+			// Delete k_orig and only put in k_new
+			err := Delete(k_orig)
+			if err != nil {
+				return fmt.Errorf("Deleting cell %q: %w", formatUtf8(k_orig), err)
+			}
+		}
+
+		err := Put(k_new, []byte(v))
+		if err != nil {
+			return fmt.Errorf("Updating cell %q: %w", formatUtf8(k_new), err)
+		}
 	}
 
-	// We have rendered row IDs, need to convert back to a bolt primary key
-	// TODO stash the real key inside f.contentBox.Objects()
-	// FIXME breaks if you try and edit the primary key(!)
-	primaryKeyForRendered := func(rowid int32) []byte {
-		return []byte(f.contentBox.Cells(0, rowid))
+	// Delete by key (affects rowids after re-render)
+	for rowid, _ := range f.deleteRows {
+		k := f.primaryKeys[rowid]
+		err := Delete(k)
+		if err != nil {
+			return fmt.Errorf("Deleting cell %q: %w", formatUtf8(k), err)
+		}
+	}
+
+	// Insert all new entries
+	for rowid, _ := range f.insertRows {
+		// Newly inserted rows will not have a valid value stashed in the
+		// f.primaryKeys slice
+		// Have to get it from the data content of the cell directly
+
+		k := keyCol.vals[rowid]
+		v := valCol.vals[rowid] // There's only one value cell
+		err := Put(k, v)
+		if err != nil {
+			return fmt.Errorf("Inserting cell %q: %w", formatUtf8(k), err)
+		}
+	}
+
+	// Done
+	return nil
+}
+
+func (n *boltLoadedDatabase) ApplyChanges(f *tableState, bucketPath []string) error {
+	if n.db.IsReadOnly() {
+		return errors.New("Database was opened read-only")
 	}
 
 	return n.db.Update(func(tx *bbolt.Tx) error {
 
 		// Get current bucket handle
-		b := boltTargetBucket(tx, ndata.bucketPath)
+		b := boltTargetBucket(tx, bucketPath)
 
-		// Edit
-		for rowid, _ /*editcells*/ := range f.updateRows {
-			k := primaryKeyForRendered(rowid)
-			v := f.contentBox.Cells(1, rowid) // There's only one value cell
-			err := b.Put(k, []byte(v))
-			if err != nil {
-				return fmt.Errorf("Updating cell %q: %w", formatUtf8(k), err)
-			}
-		}
-
-		// Delete by key (affects rowids after re-render)
-		for rowid, _ := range f.deleteRows {
-			k := primaryKeyForRendered(rowid)
-			err := b.Delete(k)
-			if err != nil {
-				return fmt.Errorf("Deleting cell %q: %w", formatUtf8(k), err)
-			}
-		}
-
-		// Insert all new entries
-		for rowid, _ := range f.insertRows {
-			k := primaryKeyForRendered(rowid)
-			v := f.contentBox.Cells(1, rowid) // There's only one value cell
-			err := b.Put(k, []byte(v))
-			if err != nil {
-				return fmt.Errorf("Inserting cell %q: %w", formatUtf8(k), err)
-			}
-		}
-
-		// Done
-		return nil
+		return kvstore_ApplyChanges(f, b.Put, b.Delete)
 	})
 }
 
-func (ld *boltLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
+func (ld *boltLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
 	// In the bolt implementation, the nav is a recursive tree of child buckets
-	return boltChildBucketNames(ld.db, ndata.bucketPath)
+	return boltChildBucketNames(ld.db, bucketPath)
 }
 
-func (ld *boltLoadedDatabase) NavContext(ndata *navData) (ret []contextAction, err error) {
-	ret = append(ret, contextAction{"Add bucket...", ld.AddChildBucket})
+func (ld *boltLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
+	ret := []contextAction{
+		{"Add bucket...", ld.AddChildBucket},
+	}
 
-	if len(ndata.bucketPath) > 0 {
+	if len(bucketPath) > 0 {
 		ret = append(ret, contextAction{"Delete bucket", ld.DeleteBucket})
 	}
 
-	return
+	if len(bucketPath) == 0 {
+		ret = append(ret, contextAction{"Export to .zip...", ld.exportToZip})
+	}
+
+	return ret, nil
 }
 
-func (ld *boltLoadedDatabase) AddChildBucket(sender vcl.IComponent, ndata *navData) error {
-	bucketName := ""
-	if !vcl.InputQuery(APPNAME, "Enter a name for the new bucket:", &bucketName) {
+func (ld *boltLoadedDatabase) exportToZip(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	// Popup for output file
+	savePath := qt.QFileDialog_GetSaveFileName4(sender.TreeWidget().QWidget, "Save backup as...", "", "Zip archive (*.zip);;All files (*)")
+	if savePath == "" {
+		return nil // cancelled
+	}
+
+	return ld.exportDatabaseToZip(savePath)
+}
+
+func (ld *boltLoadedDatabase) AddChildBucket(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	bucketName := qt.QInputDialog_GetText(sender.TreeWidget().QWidget, APPNAME, "Enter a name for the new bucket:")
+	if bucketName == "" {
 		return nil // cancel
 	}
 
 	err := ld.db.Update(func(tx *bbolt.Tx) error {
-		parent := boltTargetBucket(tx, ndata.bucketPath)
+		parent := boltTargetBucket(tx, bucketPath)
 		if parent != nil {
 			_, err := parent.CreateBucket([]byte(bucketName))
 			return err
@@ -174,73 +232,43 @@ func (ld *boltLoadedDatabase) AddChildBucket(sender vcl.IComponent, ndata *navDa
 	return nil
 }
 
-func (ld *boltLoadedDatabase) DeleteBucket(sender vcl.IComponent, ndata *navData) error {
+func (ld *boltLoadedDatabase) DeleteBucket(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, fmt.Sprintf("Are you sure you want to delete the bucket %q?", bucketPath[0])) {
+		return nil // cancelled
+	}
+
 	err := ld.db.Update(func(tx *bbolt.Tx) error {
 		// Find parent of this bucket.
-		if len(ndata.bucketPath) >= 2 {
+		if len(bucketPath) >= 2 {
 			// child bucket
-			parent := boltTargetBucket(tx, ndata.bucketPath[0:len(ndata.bucketPath)-1])
-			return parent.DeleteBucket([]byte(ndata.bucketPath[len(ndata.bucketPath)-1]))
+			parent := boltTargetBucket(tx, bucketPath[0:len(bucketPath)-1])
+			return parent.DeleteBucket([]byte(bucketPath[len(bucketPath)-1]))
 		} else {
 			// top-level bucket
-			return tx.DeleteBucket([]byte(ndata.bucketPath[0]))
+			return tx.DeleteBucket([]byte(bucketPath[0]))
 		}
 	})
 	if err != nil {
-		return fmt.Errorf("Error deleting bucket %q: %w", strings.Join(ndata.bucketPath, `/`), err)
+		return fmt.Errorf("Error deleting bucket %q: %w", strings.Join(bucketPath, `/`), err)
 	}
 	return nil
 }
 
 func (ld *boltLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
-var _ loadedDatabase = &boltLoadedDatabase{} // interface assertion
+var _ loadedDatabase = &boltLoadedDatabase{}         // interface assertion
+var _ editableLoadedDatabase = &boltLoadedDatabase{} // interface assertion
 
 //
 
-func (f *TMainForm) boltAddDatabaseFromFile(path string, readonly bool) {
-	// TODO load in background thread to stop blocking the UI
-
-	opts := bbolt.Options{
-		Timeout:  1 * time.Second,
-		ReadOnly: readonly,
-	}
-
-	db, err := bbolt.Open(path, 0644, &opts)
-	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database '%s': %s", path, err.Error()))
-		return
-	}
-
-	ld := &boltLoadedDatabase{
-		path:        path,
-		displayName: filepath.Base(path),
-		db:          db,
-	}
-	if readonly {
-		ld.displayName += " (read-only)"
-	}
-
-	ld.nav = f.Buckets.Items().Add(nil, ld.displayName)
-	ld.nav.SetHasChildren(true) // dynamically populate in OnNavExpanding
-	ld.nav.SetImageIndex(imgDatabase)
-	ld.nav.SetSelectedIndex(imgDatabase)
-	navData := &navData{
-		ld:             ld,
-		childrenLoaded: false,      // will be loaded dynamically
-		bucketPath:     []string{}, // empty = root
-	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
-}
-
+// boltTargetBucket resolves the bucketPath to a specific bolt.Bucket.
+// If the path is empty, this function returns <nil> and you must manually access
+// the root bucket.
+// If the bucket does not exist, this function returns <nil>. It does not create
+// the bucket.
 func boltTargetBucket(tx *bbolt.Tx, path []string) *bbolt.Bucket {
 
 	// If we are already deep in buckets, go directly there to find children

db_bolt_zip.go

@@ -0,0 +1,230 @@
+package main
+
+import (
+	"archive/zip"
+	"bytes"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"path"
+	"strings"
+
+	"github.com/mappu/autoconfig"
+
+	qt "github.com/mappu/miqt/qt6"
+	"go.etcd.io/bbolt"
+)
+
+func (ld *boltLoadedDatabase) exportDatabaseToZip(zippath string) error {
+
+	fh, err := os.OpenFile(zippath, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0644)
+	if err != nil {
+		return fmt.Errorf("Error opening output file: %w", err)
+	}
+	defer fh.Close()
+
+	zw := zip.NewWriter(fh)
+
+	// Filenames in zip files cannot contain `/` characters. Mangle it
+	// TODO undo this transfomation on import(!)
+	safename := func(n string) string {
+		return strings.ReplaceAll(string(n), `/`, `__`)
+	}
+
+	err = ld.db.View(func(tx *bbolt.Tx) error {
+
+		var process func(currentPath []string) error
+		process = func(currentPath []string) error {
+
+			// Create folder-entry for our own bucket
+
+			ourFolderName := path.Join(slice_apply(currentPath, safename)...)
+
+			ourBucket := zip.FileHeader{
+				Name: ourFolderName + `/`, // Trailing slash = directory
+			}
+			ourBucket.SetMode(fs.ModeDir | 0755)
+			_, err := zw.CreateHeader(&ourBucket)
+			if err != nil {
+				return err
+			}
+
+			// Create file entries for all non-bucket children
+
+			b := boltTargetBucket(tx, currentPath)
+			var childBuckets []string
+
+			var c *bbolt.Cursor
+			if b != nil {
+				c = b.Cursor() // in bucket
+			} else {
+				c = tx.Cursor()
+			}
+			for k, v := c.First(); k != nil; k, v = c.Next() {
+				if v == nil {
+					// That's a bucket
+					childBuckets = append(childBuckets, string(k))
+					continue
+				}
+
+				fileItem := zip.FileHeader{
+					Name: path.Join(ourFolderName, safename(string(k))),
+				}
+				fileItem.SetMode(0644)
+				fileW, err := zw.CreateHeader(&fileItem)
+				if err != nil {
+					return err
+				}
+
+				_, err = io.CopyN(fileW, bytes.NewReader(v), int64(len(v)))
+				if err != nil {
+					return err
+				}
+			}
+
+			// Recurse for all bucket-type children
+
+			for _, childBucketName := range childBuckets {
+				process(slice_and(currentPath, childBucketName))
+			}
+
+			// Done
+
+			return nil
+		}
+
+		return process([]string{})
+	})
+	if err != nil {
+		return err
+	}
+
+	err = zw.Flush()
+	if err != nil {
+		return err
+	}
+
+	err = zw.Close()
+	if err != nil {
+		return err
+	}
+
+	return fh.Close()
+}
+
+func (f *App) Bolt_ImportZipToDatabase_OnTriggered() {
+	zippath := qt.QFileDialog_GetOpenFileName4(f.ui.MainWindow.QWidget, "Select a zip archive to import...", "", "Zip archives (*.zip);;All files (*)")
+	if zippath == "" {
+		return // cancelled
+	}
+
+	dbpath := qt.QFileDialog_GetSaveFileName4(f.ui.MainWindow.QWidget, "Select an output file to save as...", "", "Bolt database (*.db);;All files (*)")
+	if dbpath == "" {
+		return // cancelled
+	}
+
+	err := Bolt_ImportZipToDatabase(dbpath, zippath)
+	if err != nil {
+		qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, err.Error())
+		return
+	}
+
+	res := qt.QMessageBox_Question2(f.ui.MainWindow.QWidget, APPNAME, "The import was successful. Would you like to open the Bolt database now?", qt.QMessageBox__Yes, qt.QMessageBox__No)
+	if res != int(qt.QMessageBox__Yes) {
+		return
+	}
+
+	config := NewConnectionConfig()
+	config.Type = "Bolt"
+	config.Bolt = &boltConfig{
+		Path:     autoconfig.ExistingFile(dbpath),
+		Readonly: false,
+	}
+
+	f.showConnectDialog(config)
+}
+
+func Bolt_ImportZipToDatabase(dbpath, zippath string) error {
+
+	db, err := bbolt.Open(dbpath, 0644, nil)
+	if err != nil {
+		return fmt.Errorf("Opening target database: %w", err)
+	}
+	defer db.Close()
+
+	fh, err := os.OpenFile(zippath, os.O_RDONLY, 0400)
+	if err != nil {
+		return fmt.Errorf("Opening input archive: %w", err)
+	}
+	defer fh.Close()
+
+	fstat, err := fh.Stat()
+	if err != nil {
+		return err
+	}
+
+	zr, err := zip.NewReader(fh, fstat.Size())
+	if err != nil {
+		return fmt.Errorf("Reading zip file format: %w", err)
+	}
+
+	return db.Update(func(tx *bbolt.Tx) error {
+
+		for _, zf := range zr.File {
+			if strings.HasSuffix(zf.Name, `/`) || (zf.Mode()&fs.ModeDir) != 0 {
+				// Bucket
+
+				if zf.Name == `/` {
+					continue // virtual entry for top-level directory, skip
+				}
+
+				bucketPath := strings.Split(strings.TrimSuffix(zf.Name, `/`), `/`)
+
+				parentBucket := boltTargetBucket(tx, bucketPath[0:len(bucketPath)-1])
+				newBucketName := []byte(bucketPath[len(bucketPath)-1])
+
+				var err error
+				if parentBucket == nil {
+					_, err = tx.CreateBucket(newBucketName) // at top level
+				} else {
+					_, err = parentBucket.CreateBucket(newBucketName) // child bucket
+				}
+				if err != nil {
+					return fmt.Errorf("Creating bucket %q: %w", zf.Name, err)
+				}
+
+			} else {
+				// Object
+				objectPath := strings.Split(zf.Name, `/`)
+
+				rc, err := zf.Open()
+				if err != nil {
+					return err
+				}
+
+				content, err := io.ReadAll(rc)
+				if err != nil {
+					return err
+				}
+
+				parentBucket := boltTargetBucket(tx, objectPath[0:len(objectPath)-1]) // Can't be nil, items always exist within a bucket
+				objectKey := []byte(objectPath[len(objectPath)-1])
+
+				err = parentBucket.Put(objectKey, content)
+				if err != nil {
+					return err
+				}
+
+				err = rc.Close()
+				if err != nil {
+					return err
+				}
+
+			}
+		}
+
+		// Done
+		return nil
+	})
+}

db_bunt.go

@@ -0,0 +1,118 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+	"strings"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"github.com/tidwall/buntdb"
+)
+
+type buntLdb struct {
+	db *buntdb.DB
+}
+
+func (ld *buntLdb) DriverName() string {
+	return "BuntDB"
+}
+
+func (ld *buntLdb) Properties(bucketPath []string) (string, error) {
+	idxInfo, err := ld.db.Indexes()
+	if err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("Indexes (%d):\n%s", len(idxInfo), "-"+strings.Join(idxInfo, "\n- ")+"\n"), nil
+}
+
+func (ld *buntLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+	// Interestingly, BuntDB internally uses string data, not []byte data
+	// That would stop us from using kvstore_ApplyChanges that only works with
+	// []byte data, so, fake []byte casts ourselves
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	err := ld.db.View(func(tx *buntdb.Tx) error {
+		return tx.Ascend("", func(k, v string) bool {
+			f.AddRow_PK_Data([]byte(k), []byte(k), []byte(v))
+			return true
+		})
+	})
+	if err != nil {
+		return err
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (n *buntLdb) ApplyChanges(f *tableState, bucketPath []string) error {
+
+	return n.db.Update(func(tx *buntdb.Tx) error {
+		return kvstore_ApplyChanges(
+			f,
+			func(k, v []byte) error {
+				_, _, err := tx.Set(string(k), string(v), nil)
+				return err
+			},
+			func(k []byte) error {
+				_, err := tx.Delete(string(k))
+				return err
+			},
+		)
+	})
+}
+
+func (ld *buntLdb) doShrink(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	return ld.db.Shrink()
+}
+
+func (ld *buntLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *buntLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return []contextAction{
+		{"Shrink", ld.doShrink},
+	}, nil
+}
+
+func (ld *buntLdb) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &buntLdb{}         // interface assertion
+var _ editableLoadedDatabase = &buntLdb{} // interface assertion
+
+//
+
+type buntDBConnection struct {
+	Type autoconfig.OneOf
+
+	Disk *struct {
+		File autoconfig.ExistingFile
+	} `json:",omitempty"`
+	Memory *struct{} `json:",omitempty"`
+}
+
+func (ldc *buntDBConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	var path string
+	if ldc.Disk != nil {
+		path = string(ldc.Disk.File)
+	} else {
+		path = `:memory:` // Special string known by driver
+	}
+
+	db, err := buntdb.Open(path)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &buntLdb{db: db}, filepath.Base(path), nil
+}

db_debconf.go

@@ -1,132 +1,117 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"path/filepath"
-	"unsafe"
+	"runtime"
 
-	"yvbolt/debconf"
+	"qbolt/debconf"
 
-	"github.com/ying32/govcl/vcl"
+	"github.com/mappu/autoconfig"
 )
 
 type debconfLoadedDatabase struct {
-	displayName string
-	db          *debconf.Database
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
-}
-
-func (ld *debconfLoadedDatabase) DisplayName() string {
-	return ld.displayName
+	db *debconf.Database
 }
 
 func (ld *debconfLoadedDatabase) DriverName() string {
 	return "debconf"
 }
 
-func (ld *debconfLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
+func (ld *debconfLoadedDatabase) Properties(bucketPath []string) (string, error) {
+	content := fmt.Sprintf("Applications: %d\nUnique attributes: %d\n", len(ld.db.Entries), len(ld.db.AllColumnNames))
+	return content, nil
 }
 
-func (ld *debconfLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *debconfLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
-
-	// Load properties
-
-	content := fmt.Sprintf("Entries: %d\nUnique attributes: %d\n", len(ld.db.Entries), len(ld.db.AllColumnNames))
-	f.propertiesBox.SetText(content)
+func (ld *debconfLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
 
 	// Load data
 
+	if len(bucketPath) == 0 {
+		return nil // No data at root level
+	}
+
+	// Find application entry for bucketPath
+
+	appInfo, ok := ld.db.FindApplicationByName(bucketPath[0])
+	if !ok {
+		return fmt.Errorf("Invalid application %q", bucketPath[0])
+	}
+
+	// Process entries for specific application
+
 	indexes := make(map[string]int)
 
+	f.SetupColumns(slice_repeat(columnType_inlineText, len(ld.db.AllColumnNames)), ld.db.AllColumnNames)
+
 	for i, cname := range ld.db.AllColumnNames {
 		indexes[cname] = i
-
-		col := f.contentBox.Columns().Add()
-		col.Title().SetCaption(cname)
 	}
 
-	for _, entry := range ld.db.Entries {
+	for _, entry := range appInfo.Entries {
 
-		rpos := f.contentBox.RowCount()
-		f.contentBox.SetRowCount(rpos + 1)
-		f.contentBox.SetCells(0, rpos, entry.Name)
+		rpos := f.AddRow()
+		f.SetCell(rpos, 0, entry.Name)
 
 		for _, proppair := range entry.Properties {
-			f.contentBox.SetCells(int32(indexes[proppair[0]]), rpos, proppair[1])
+			f.SetCell(rpos, indexes[proppair[0]], proppair[1])
 		}
 	}
 
 	// Valid
-	vcl_stringgrid_columnwidths(f.contentBox)
-	f.contentBox.SetEnabled(true)
+	f.Ready()
 	return nil
 }
 
-func (ld *debconfLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
-	// In the debconf implementation, there is only one child: "Data"
-	if len(ndata.bucketPath) == 0 {
-		return []string{"Data"}, nil
+func (ld *debconfLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	if len(bucketPath) == 0 {
+		ret := make([]string, 0, len(ld.db.Entries))
+		for _, app := range ld.db.Entries {
+			ret = append(ret, app.Name)
+		}
+		return ret, nil
 
 	} else {
-		// No children deeper than that
-		return []string{}, nil
+		return []string{}, nil // No further children
 	}
 }
 
-func (ld *debconfLoadedDatabase) NavContext(ndata *navData) ([]contextAction, error) {
+func (ld *debconfLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
 	return nil, nil // No special actions are supported
 }
 
 func (ld *debconfLoadedDatabase) Close() {
-	ld.arena = nil
 }
 
 var _ loadedDatabase = &debconfLoadedDatabase{} // interface assertion
 
 //
 
-func (f *TMainForm) debconfAddDatabaseFrom(path string) {
-	// TODO load in background thread to stop blocking the UI
+//
 
-	fh, err := os.OpenFile(path, os.O_RDONLY, 0400)
+type debconfConnection struct {
+	Database autoconfig.ExistingFile `yfilter:"Debconf database (*.dat);;All files (*)"`
+}
+
+func (dc *debconfConnection) Reset() {
+	if runtime.GOOS == "linux" {
+		dc.Database = "/var/cache/debconf/config.dat" // Prefill default path
+	}
+}
+
+func (dc *debconfConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	fh, err := os.OpenFile(string(dc.Database), os.O_RDONLY, 0400)
 	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database: %s", err.Error()))
-		return
+		return nil, "", err
 	}
 	defer fh.Close()
 
 	db, err := debconf.Parse(fh)
 	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database: %s", err.Error()))
-		return
+		return nil, "", err
 	}
 
-	ld := &debconfLoadedDatabase{
-		db:          db,
-		displayName: filepath.Base(path),
-	}
-
-	ld.nav = f.Buckets.Items().Add(nil, ld.displayName)
-	ld.nav.SetHasChildren(true) // dynamically populate in OnNavExpanding
-	ld.nav.SetImageIndex(imgDatabase)
-	ld.nav.SetSelectedIndex(imgDatabase)
-	navData := &navData{
-		ld:             ld,
-		childrenLoaded: false,      // will be loaded dynamically
-		bucketPath:     []string{}, // empty = root
-	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
+	return &debconfLoadedDatabase{db: db}, filepath.Base(string(dc.Database)), nil
 }

db_embeddedversions.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"runtime/debug"
+)
+
+type evLdb struct {
+	mods *debug.BuildInfo
+}
+
+func (ld *evLdb) DriverName() string {
+	return APPNAME + " " + appVersion
+}
+
+func (ld *evLdb) Properties(bucketPath []string) (string, error) {
+	return fmt.Sprintf(
+		"%s %s\n- %d package dependencies\n- Compiler: %s",
+		APPNAME, appVersion, len(ld.mods.Deps), ld.mods.GoVersion,
+	), nil
+}
+
+func (ld *evLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	f.SetupColumns([]columnType{columnType_inlineText, columnType_inlineText, columnType_inlineText}, []string{"Library", "Version", "Hash"})
+
+	for _, dep := range ld.mods.Deps {
+		f.AddRowData(dep.Path, dep.Version, dep.Sum)
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (ld *evLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No further children
+}
+
+func (ld *evLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No special actions are supported
+}
+
+func (ld *evLdb) Close() {}
+
+var _ loadedDatabase = &evLdb{} // interface assertion
+
+//
+
+type evLdbConnection struct{}
+
+func (dc *evLdbConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	mods, ok := debug.ReadBuildInfo()
+	if !ok {
+		return nil, "", errors.New("Missing build info")
+	}
+
+	return &evLdb{mods: mods}, APPNAME, nil
+}

db_leveldb.go

@@ -0,0 +1,102 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	"github.com/syndtr/goleveldb/leveldb"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+)
+
+type leveldbLoadedDatabase struct {
+	db *leveldb.DB
+}
+
+func (ld *leveldbLoadedDatabase) DriverName() string {
+	return "LevelDB"
+}
+
+func (ld *leveldbLoadedDatabase) Properties(bucketPath []string) (string, error) {
+
+	var s leveldb.DBStats
+	err := ld.db.Stats(&s)
+	if err != nil {
+		return "", fmt.Errorf("Stats: %w", err)
+	}
+
+	content := fmt.Sprintf("LevelDB stats: %#v", s)
+	return content, nil
+}
+
+func (ld *leveldbLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+	// leveldb always uses Key + Value as the columns
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	itn := ld.db.NewIterator(nil, nil)
+	defer itn.Release()
+
+	for itn.Next() {
+		f.AddRow_PK_Data(itn.Key(), itn.Key(), itn.Value())
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (n *leveldbLoadedDatabase) ApplyChanges(f *tableState, bucketPath []string) error {
+	txn, err := n.db.OpenTransaction()
+	if err != nil {
+		return fmt.Errorf("OpenTransaction: %w", err)
+	}
+
+	err = kvstore_ApplyChanges(
+		f,
+		func(k, v []byte) error { return txn.Put(k, v, nil) },
+		func(k []byte) error { return txn.Delete(k, nil) },
+	)
+	if err != nil {
+		txn.Discard()
+		return err
+	}
+
+	return txn.Commit()
+}
+
+func (ld *leveldbLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *leveldbLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No special actions are supported
+}
+
+func (ld *leveldbLoadedDatabase) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &leveldbLoadedDatabase{}         // interface assertion
+var _ editableLoadedDatabase = &leveldbLoadedDatabase{} // interface assertion
+
+//
+
+type leveldbConnection struct {
+	Directory autoconfig.ExistingDirectory
+	Readonly  bool
+}
+
+func (pdc *leveldbConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	var o opt.Options
+	o.ReadOnly = pdc.Readonly
+
+	db, err := leveldb.OpenFile(string(pdc.Directory), &o)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &leveldbLoadedDatabase{db: db}, filepath.Base(string(pdc.Directory)), nil
+}

db_lmdb.go

@@ -0,0 +1,284 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/ledgerwatch/lmdb-go/lmdb"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+)
+
+type lmdbDatabase struct {
+	db      *lmdb.Env
+	isMulti bool
+}
+
+func (ld *lmdbDatabase) DriverName() string {
+	return lmdb.VersionString() // Already includes "LMDB" prefix
+}
+
+func (ld *lmdbDatabase) Properties(bucketPath []string) (string, error) {
+	info, err := ld.db.Info()
+	if err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("LMDB info: %#v", info), nil
+}
+
+func (ld *lmdbDatabase) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+
+	if ld.isMulti && len(bucketPath) == 0 {
+		// In multi-database mode, the only things in the root DB are keys
+		// naming the child databases
+		// Show no data, it will be shown in the nav area instead
+		return nil
+	}
+
+	// LMDB always uses Key + Value as the columns
+
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	err := ld.db.View(func(txn *lmdb.Txn) error {
+		var dbi lmdb.DBI
+		var err error
+
+		if len(bucketPath) == 0 {
+			dbi, err = txn.OpenRoot(0)
+		} else {
+			dbi, err = txn.OpenDBI(bucketPath[0], 0)
+		}
+		if err != nil {
+			return err
+		}
+		// defer ld.db.CloseDBI(dbi)
+
+		itn, err := txn.OpenCursor(dbi)
+		defer itn.Close()
+		if err != nil {
+			return err
+		}
+
+		// FIXME is this correct?
+		kbuff := make([]byte, ld.db.MaxKeySize())
+		vbuff := make([]byte, 4096)
+
+		var op uint = lmdb.First
+		for {
+			key, val, err := itn.Get(kbuff, vbuff, op)
+			if err != nil {
+				if lmdb.IsNotFound(err) {
+					break // reached end of iteration
+				}
+				return err // a real error
+			}
+
+			op = lmdb.Next
+			f.AddRow_PK_Data(key, key, val)
+		}
+
+		// Done
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (ld *lmdbDatabase) ApplyChanges(f *tableState, bucketPath []string) error {
+	return ld.db.Update(func(txn *lmdb.Txn) error {
+		var dbi lmdb.DBI
+		var err error
+
+		if len(bucketPath) == 0 {
+			dbi, err = txn.OpenRoot(0)
+		} else {
+			dbi, err = txn.OpenDBI(bucketPath[0], 0)
+		}
+		if err != nil {
+			return err
+		}
+
+		return kvstore_ApplyChanges(
+			f,
+			func(k, v []byte) error { return txn.Put(dbi, k, v, 0) },
+			func(k []byte) error { return txn.Del(dbi, k, nil) },
+		)
+	})
+}
+
+func (ld *lmdbDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	// """To use named databases (with name != NULL), mdb_env_set_maxdbs() must
+	// be called before opening the environment. Database names are keys in the
+	// unnamed database, and may be read but not written."""
+
+	if len(bucketPath) == 0 && ld.isMulti {
+
+		// Read all keys from root DB
+		var allKeys []string
+		err := ld.db.View(func(txn *lmdb.Txn) error {
+			dbi, err := txn.OpenRoot(0)
+			if err != nil {
+				return err
+			}
+			//defer ld.db.CloseDBI(dbi)
+
+			itn, err := txn.OpenCursor(dbi)
+			defer itn.Close()
+			if err != nil {
+				return err
+			}
+
+			kbuff := make([]byte, ld.db.MaxKeySize())
+
+			var op uint = lmdb.First
+			for {
+				key, _, err := itn.Get(kbuff, nil, op)
+				if err != nil {
+					if lmdb.IsNotFound(err) {
+						break // reached end of iteration
+					}
+					return err // a real error
+				}
+
+				op = lmdb.Next
+
+				allKeys = append(allKeys, string(key))
+			}
+
+			// Done
+			return nil
+		})
+		return allKeys, err
+
+	} else {
+		return []string{}, nil // No children
+	}
+}
+
+func (ld *lmdbDatabase) createChildDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	// Prompt for child database name
+	ok := false
+	childDbName := qt.QInputDialog_GetText4(sender.TreeWidget().QWidget, APPNAME, "Enter a name for the child database:", qt.QLineEdit__Normal, "", &ok)
+	if !ok {
+		return nil // Cancelled
+	}
+
+	return ld.db.Update(func(txn *lmdb.Txn) error {
+		_, err := txn.CreateDBI(childDbName)
+		return err
+	})
+}
+
+func (ld *lmdbDatabase) truncateAllContent(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, fmt.Sprintf("Are you sure you want to empty the child database %q?", bucketPath[0])) {
+		return nil // cancelled
+	}
+
+	return ld.drop(bucketPath[0], true)
+}
+
+func (ld *lmdbDatabase) deleteChildDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, fmt.Sprintf("Are you sure you want to delete the child database %q?", bucketPath[0])) {
+		return nil // cancelled
+	}
+
+	return ld.drop(bucketPath[0], true)
+}
+
+func (ld *lmdbDatabase) drop(multiDbName string, delet bool) error {
+	return ld.db.Update(func(txn *lmdb.Txn) error {
+		dbi, err := txn.OpenDBI(multiDbName, 0)
+		if err != nil {
+			return err
+		}
+
+		return txn.Drop(dbi, true)
+	})
+}
+
+func (ld *lmdbDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
+
+	if ld.isMulti {
+		// Allow create/delete databases
+		if len(bucketPath) == 0 {
+			return []contextAction{
+				contextAction{"Add child database...", ld.createChildDatabase},
+			}, nil
+		} else {
+			return []contextAction{
+				contextAction{"Truncate and remove all contents...", ld.truncateAllContent},
+				contextAction{"Remove child database...", ld.deleteChildDatabase},
+			}, nil
+		}
+	}
+
+	return nil, nil // No special actions are supported
+}
+
+func (ld *lmdbDatabase) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &lmdbDatabase{}         // interface assertion
+var _ editableLoadedDatabase = &lmdbDatabase{} // interface assertion
+
+//
+
+type lmdbConnection struct {
+	Storage struct {
+		Type      autoconfig.OneOf
+		Directory *autoconfig.ExistingDirectory `json:",omitempty"`
+		File      *struct {
+			Path autoconfig.ExistingFile `yfilter:"LMDB database (*.mdb);;All files (*)"`
+		} `json:",omitempty"`
+	}
+	MultiDB *struct {
+		Slots int
+	} `ylabel:"Multiple databases mode"`
+	Readonly bool
+}
+
+func (pdc *lmdbConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	env, err := lmdb.NewEnv()
+	if err != nil {
+		return nil, "", err
+	}
+
+	var openPath string
+	var flags uint = 0
+	if pdc.Readonly {
+		flags |= lmdb.Readonly
+	}
+	if pdc.Storage.Directory != nil {
+		openPath = string(*pdc.Storage.Directory)
+	} else if pdc.Storage.File != nil {
+		openPath = string(pdc.Storage.File.Path)
+		flags |= lmdb.NoSubdir
+	}
+
+	isMulti := false
+	if pdc.MultiDB != nil {
+		env.SetMaxDBs(pdc.MultiDB.Slots)
+		isMulti = true
+	}
+
+	err = env.Open(openPath, flags, 0644)
+	if err != nil {
+		_ = env.Close()
+		return nil, "", err
+	}
+
+	return &lmdbDatabase{db: env, isMulti: isMulti}, filepath.Base(openPath), nil
+}

db_lotusdb.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/lotusdblabs/lotusdb/v2"
+	"github.com/mappu/autoconfig"
+)
+
+type lotusLdb struct {
+	db *lotusdb.DB
+}
+
+func (ld *lotusLdb) DriverName() string {
+	return "LotusDB"
+}
+
+func (ld *lotusLdb) Properties(bucketPath []string) (string, error) {
+	return "", nil
+}
+
+func (ld *lotusLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	cur, err := ld.db.NewIterator(lotusdb.IteratorOptions{})
+	if err != nil {
+		return fmt.Errorf("NewIterator: %w", err)
+	}
+	defer cur.Close()
+
+	for cur.Valid() {
+		f.AddRow_PK_Data(cur.Key(), cur.Key(), cur.Value())
+		cur.Next()
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (n *lotusLdb) ApplyChanges(f *tableState, bucketPath []string) error {
+	txn := n.db.NewBatch(lotusdb.DefaultBatchOptions)
+
+	err := kvstore_ApplyChanges(f, txn.Put, txn.Delete)
+	if err != nil {
+		return err
+	}
+
+	return txn.Commit()
+}
+
+func (ld *lotusLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *lotusLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No special actions are supported
+}
+
+func (ld *lotusLdb) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &lotusLdb{}         // interface assertion
+var _ editableLoadedDatabase = &lotusLdb{} // interface assertion
+
+//
+
+type lotusDBConnection struct {
+	Directory autoconfig.ExistingDirectory
+}
+
+func (ldc *lotusDBConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	opts := lotusdb.DefaultOptions // copy
+	opts.DirPath = string(ldc.Directory)
+
+	db, err := lotusdb.Open(opts)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &lotusLdb{db: db}, filepath.Base(string(ldc.Directory)), nil
+}

db_mongo.go

@@ -0,0 +1,348 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"golang.org/x/crypto/ssh"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+	"go.mongodb.org/mongo-driver/v2/mongo/readpref"
+	"go.mongodb.org/mongo-driver/v2/version"
+)
+
+// MongoDB support
+// To test: `make test-mongo`
+
+type mongoLdb struct {
+	client *mongo.Client
+	sshc   *ssh.Client
+}
+
+func (ld *mongoLdb) DriverName() string {
+	return "MongoDB " + version.Driver
+}
+
+func (ld *mongoLdb) Properties(bucketPath []string) (string, error) {
+	ctx := context.Background()
+
+	if len(bucketPath) == 0 {
+		return "", nil // no properties
+
+	} else if len(bucketPath) == 1 {
+		// Database is selected
+		db := ld.client.Database(bucketPath[0])
+		return "Database " + db.Name(), nil
+
+	} else if len(bucketPath) == 2 {
+		// Collection is selected
+		db := ld.client.Database(bucketPath[0])
+		coll := db.Collection(bucketPath[1])
+
+		info := "Database " + db.Name() + "\n"
+		info += "Collection " + coll.Name() + "\n"
+
+		// Document count
+		count, err := coll.EstimatedDocumentCount(ctx)
+		if err != nil {
+			return "", fmt.Errorf("Estimating document count: %w", err)
+		}
+		info += fmt.Sprintf("Estimated document count: %d", count) + "\n"
+
+		// Index info
+		allIndexes, err := coll.Indexes().ListSpecifications(ctx)
+		if err != nil {
+			return "", fmt.Errorf("Checking indexes: %w", err)
+		}
+
+		info += fmt.Sprintf("\nIndexes (%d):\n", len(allIndexes))
+		for _, idxInfo := range allIndexes {
+			info += fmt.Sprintf("- %q (namespace=%q, version=%d)\n", idxInfo.Name, idxInfo.Namespace, idxInfo.Version)
+		}
+
+		return info, nil
+
+	} else {
+		return "", errors.New("??")
+	}
+}
+
+func (ld *mongoLdb) RenderForNav(f *tableState, bucketPath []string) error {
+	ctx := context.Background()
+
+	if len(bucketPath) == 0 || len(bucketPath) == 1 {
+		// Leave the table disabled
+		return nil
+
+	} else if len(bucketPath) == 2 {
+
+		f.SetupColumns([]columnType{columnType_inlineText, columnType_bsonDoc}, []string{"_id", "Document"})
+
+		db := ld.client.Database(bucketPath[0])
+		coll := db.Collection(bucketPath[1])
+
+		cur, err := coll.Find(ctx, bson.D{}) // An empty document as filter = find all results
+		if err != nil {
+			return fmt.Errorf("Find: %w", err)
+		}
+
+		defer cur.Close(ctx)
+		return ld.populateRows(ctx, cur, f)
+
+	} else {
+		return errors.New("??")
+
+	}
+}
+
+func (ld *mongoLdb) populateRows(ctx context.Context, cur *mongo.Cursor, f *tableState) error {
+
+	for cur.Next(ctx) {
+		var result bson.D
+		if err := cur.Decode(&result); err != nil {
+			return fmt.Errorf("Decode: %w", err)
+		}
+
+		// The document is always an ordered map[string]any.
+		// MongoDB enforces there is an "_id" key.
+		idValue, ok := bson_find_id(result)
+		if !ok {
+			return errors.New("Surprised to find a document missing an '_id' field")
+		}
+
+		f.AddRow_PK_Data([]byte(idValue), idValue, result)
+	}
+	if err := cur.Err(); err != nil {
+		return fmt.Errorf("Cursor: %w", err)
+	}
+
+	// Done
+	f.Ready()
+	return nil
+}
+
+func (ld *mongoLdb) NavChildren(bucketPath []string) ([]string, error) {
+	ctx := context.Background()
+
+	if len(bucketPath) == 0 {
+		return ld.client.ListDatabaseNames(ctx, bson.D{})
+
+	} else if len(bucketPath) == 1 {
+		db := ld.client.Database(bucketPath[0])
+		return db.ListCollectionNames(ctx, bson.D{})
+
+	}
+
+	return []string{}, nil // No children
+}
+
+func (ld *mongoLdb) actionNewDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	ctx := context.Background()
+
+	dbName := qt.QInputDialog_GetText(sender.TreeWidget().QWidget, APPNAME, "Enter a name for the new database:")
+	if dbName == "" {
+		return nil // cancel
+	}
+
+	// MongoDB: databases just start to exist when you write to them
+	newDb := ld.client.Database(dbName)
+	return newDb.CreateCollection(ctx, "my.new.collection")
+}
+
+func (ld *mongoLdb) actionNewCollection(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	ctx := context.Background()
+
+	collName := qt.QInputDialog_GetText(sender.TreeWidget().QWidget, APPNAME, "Enter a name for the new collection:")
+	if collName == "" {
+		return nil // cancel
+	}
+
+	// MongoDB: databases just start to exist when you write to them
+	newDb := ld.client.Database(bucketPath[0])
+	return newDb.CreateCollection(ctx, collName)
+}
+
+func (ld *mongoLdb) actionDropDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	ctx := context.Background()
+
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, fmt.Sprintf("Are you sure you want to drop the database %q?", bucketPath[0])) {
+		return nil // cancelled
+	}
+
+	db := ld.client.Database(bucketPath[0])
+	return db.Drop(ctx)
+}
+
+func (ld *mongoLdb) actionDropCollection(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	ctx := context.Background()
+
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, fmt.Sprintf("Are you sure you want to delete the collection %q?", bucketPath[1])) {
+		return nil // cancelled
+	}
+
+	db := ld.client.Database(bucketPath[0])
+	coll := db.Collection(bucketPath[1])
+	return coll.Drop(ctx)
+}
+
+func (ld *mongoLdb) ExecQuery(query string, bucketPath []string, resultArea *tableState) error {
+	ctx := context.Background()
+
+	if len(bucketPath) == 0 {
+		return errors.New("Please select a database first.")
+	}
+
+	db := ld.client.Database(bucketPath[0])
+
+	// The query should be JSON, e.g.
+	//  { "hello": 1 } or
+	//  { "explain": { "count": "system.users" } } or
+	//  { "listDatabases": 1 }
+
+	doc := bson.D{}
+	err := doc.UnmarshalJSON([]byte(query))
+	if err != nil {
+		return fmt.Errorf("Parsing JSON query: %w", err)
+	}
+
+	// FIXME how to tell if the response will have a cursor or a singleResult?
+
+	if false {
+		// Cursor
+		cur, err := db.RunCommandCursor(ctx, doc)
+		if err != nil {
+			return fmt.Errorf("Running command: %w", err)
+		}
+
+		defer cur.Close(ctx)
+		return ld.populateRows(ctx, cur, resultArea)
+
+	} else {
+		// Single result
+
+		res := db.RunCommand(ctx, doc)
+
+		response := bson.D{}
+		err = res.Decode(&response)
+		if err != nil {
+			return fmt.Errorf("Decoding response: %w", err)
+		}
+
+		responseJson, err := response.MarshalJSON()
+		if err != nil {
+			return fmt.Errorf("Decoding response: %w", err)
+		}
+
+		resultArea.SetupColumns([]columnType{columnType_popupData}, []string{"Response"})
+		resultArea.AddRowData(responseJson)
+		resultArea.Ready()
+		return nil
+	}
+}
+
+func (ld *mongoLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	if len(bucketPath) == 0 {
+		// Top-level connection
+		return []contextAction{
+			{"Create database...", ld.actionNewDatabase},
+		}, nil
+
+	} else if len(bucketPath) == 1 {
+		// Database selected
+		return []contextAction{
+			{"Create collection...", ld.actionNewCollection},
+			{"Drop database...", ld.actionDropDatabase},
+		}, nil
+
+	} else if len(bucketPath) == 2 {
+		// Collection selected
+		return []contextAction{
+			{"Drop collection...", ld.actionDropCollection},
+		}, nil
+
+	} else {
+		return nil, errors.New("???")
+	}
+}
+
+func (ld *mongoLdb) Close() {
+	_ = ld.client.Disconnect(context.Background())
+	if ld.sshc != nil {
+		_ = ld.sshc.Close()
+	}
+}
+
+var _ loadedDatabase = &mongoLdb{}          // interface assertion
+var _ queryableLoadedDatabase = &mongoLdb{} // interface assertion
+
+//
+
+type mongoConnection struct {
+	Conn struct {
+		Mode autoconfig.OneOf
+
+		Connection_String *string `json:",omitempty"`
+	}
+
+	SSH_Tunnel *SSHTunnel
+}
+
+func (moc *mongoConnection) Reset() {
+	moc.Conn.Mode = "Connection_String"
+	moc.Conn.Connection_String = address_of("mongodb://localhost:27017")
+}
+
+func (moc *mongoConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	ctx, _ = context.WithTimeout(ctx, 5*time.Second) // shadow parent ctx
+
+	opts := options.Client().ApplyURI(string(*moc.Conn.Connection_String))
+
+	// Our used library supports all compressors
+	opts.SetCompressors([]string{"zstd", "snappy", "zlib"})
+
+	ret := mongoLdb{}
+
+	if moc.SSH_Tunnel != nil {
+		sshc, err := moc.SSH_Tunnel.Open(ctx)
+		if err != nil {
+			return nil, "", err
+		}
+
+		opts.Dialer = sshc // interface implements DialContext()
+		ret.sshc = sshc
+
+		// The crypto/ssh library does not support deadlines over tcp tunnels
+		// Go-redis has a workaround for this, but go-mongo does not
+	}
+
+	//
+
+	client, err := mongo.Connect(opts)
+	if err != nil {
+		return nil, "", err
+	}
+	ret.client = client
+
+	// Connect() does not block for server discovery. Check that the server really
+	// is reachable
+
+	err = client.Ping(ctx, readpref.Primary())
+	if err != nil {
+		return nil, "", err
+	}
+
+	// We should be able to ListDatabases - there may be an authentication error
+	_, err = client.ListDatabaseNames(ctx, bson.D{})
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &ret, "MongoDB", nil
+}

db_none.go

@@ -1,37 +1,24 @@
 package main
 
-import (
-	"github.com/ying32/govcl/vcl"
-)
-
 type noLoadedDatabase struct{}
 
-func (n *noLoadedDatabase) DisplayName() string {
-	return APPNAME
-}
-
 func (n *noLoadedDatabase) DriverName() string {
 	return "No database selected"
 }
 
-func (n *noLoadedDatabase) RootElement() *vcl.TTreeNode {
+func (n *noLoadedDatabase) Properties(bucketPath []string) (string, error) {
+	return "Open a database to get started...", nil
+}
+func (n *noLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
 	return nil
 }
 
-func (n *noLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
-	f.propertiesBox.SetText("Open a database to get started...")
-	return nil
-}
-
-func (n *noLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
+func (n *noLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
 	return []string{}, nil
 }
 
-func (ld *noLoadedDatabase) NavContext(ndata *navData) ([]contextAction, error) {
+func (ld *noLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
 	return nil, nil // No special actions are supported
 }
 
-func (n *noLoadedDatabase) Keepalive(ndata *navData) {
-}
-
 func (n *noLoadedDatabase) Close() {}

db_pebble.go

@@ -4,55 +4,38 @@ import (
 	"context"
 	"fmt"
 	"path/filepath"
-	"unsafe"
 
 	"github.com/cockroachdb/pebble"
 	"github.com/cockroachdb/pebble/vfs"
-	"github.com/ying32/govcl/vcl"
+	"github.com/mappu/autoconfig"
 )
 
 type pebbleLoadedDatabase struct {
-	displayName string
-	db          *pebble.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
-}
-
-func (ld *pebbleLoadedDatabase) DisplayName() string {
-	return ld.displayName
+	db *pebble.DB
 }
 
 func (ld *pebbleLoadedDatabase) DriverName() string {
-	return "Pebble " + version_Pebble // Parsed from embedded go.mod copy
+	return "Pebble"
 }
 
-func (ld *pebbleLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
+func (ld *pebbleLoadedDatabase) Properties(bucketPath []string) (string, error) {
+	content := fmt.Sprintf("Pebble metrics: %#v", ld.db.Metrics())
+	return content, nil
 }
 
-func (ld *pebbleLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *pebbleLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
+func (ld *pebbleLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
 
 	ctx := context.Background()
 
-	// Load properties
-
-	content := fmt.Sprintf("Pebble metrics: %#v", ld.db.Metrics())
-	f.propertiesBox.SetText(content)
-
 	// Load data
 	// pebble always uses Key + Value as the columns
 
-	colKey := f.contentBox.Columns().Add()
-	colKey.Title().SetCaption("Key")
-	colVal := f.contentBox.Columns().Add()
-	colVal.Title().SetCaption("Value")
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
 
-	itr := ld.db.NewIterWithContext(ctx, nil)
+	itr, err := ld.db.NewIterWithContext(ctx, nil)
+	if err != nil {
+		return err
+	}
 	defer itr.Close()
 
 	for itr.First(); itr.Valid(); itr.Next() {
@@ -62,73 +45,76 @@ func (ld *pebbleLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error
 			return fmt.Errorf("Failed to load data for key %q: %w", formatAny(k), err)
 		}
 
-		rpos := f.contentBox.RowCount()
-		f.contentBox.SetRowCount(rpos + 1)
-		f.contentBox.SetCells(0, rpos, formatUtf8(k))
-		f.contentBox.SetCells(0, rpos, formatUtf8(v))
+		f.AddRow_PK_Data(k, k, v)
 	}
 
 	// Valid
-	vcl_stringgrid_columnwidths(f.contentBox)
-	f.contentBox.SetEnabled(true)
+	f.Ready()
 	return nil
 }
 
-func (ld *pebbleLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
-	// In the pebble implementation, there is only one child: "Data"
-	if len(ndata.bucketPath) == 0 {
-		return []string{"Data"}, nil
+func (n *pebbleLoadedDatabase) ApplyChanges(f *tableState, bucketPath []string) error {
 
-	} else {
-		// No children deeper than that
-		return []string{}, nil
+	txn := n.db.NewBatch()
+
+	err := kvstore_ApplyChanges(
+		f,
+		func(k, v []byte) error { return txn.Set(k, v, nil) },
+		func(k []byte) error { return txn.Delete(k, nil) },
+	)
+	if err != nil {
+		return err
 	}
+	return txn.Commit(nil)
 }
 
-func (ld *pebbleLoadedDatabase) NavContext(ndata *navData) ([]contextAction, error) {
+func (ld *pebbleLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *pebbleLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
 	return nil, nil // No special actions are supported
 }
 
 func (ld *pebbleLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
-var _ loadedDatabase = &pebbleLoadedDatabase{} // interface assertion
+var _ loadedDatabase = &pebbleLoadedDatabase{}         // interface assertion
+var _ editableLoadedDatabase = &pebbleLoadedDatabase{} // interface assertion
 
 //
 
-func (f *TMainForm) pebbleAddDatabaseFromMemory() {
-	f.pebbleAddDatabaseFrom("", &pebble.Options{FS: vfs.NewMem()})
+type pebbleConnection struct {
+	Type autoconfig.OneOf
+
+	Disk *struct {
+		Directory autoconfig.ExistingDirectory
+		Readonly  bool
+	} `json:",omitempty"`
+	Memory *struct{} `json:",omitempty"`
 }
 
-func (f *TMainForm) pebbleAddDatabaseFrom(dirname string, opts *pebble.Options) {
-	// TODO load in background thread to stop blocking the UI
+func (pdc *pebbleConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	opts := (&pebble.Options{}).EnsureDefaults()
 
-	db, err := pebble.Open(dirname, opts)
-	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database: %s", err.Error()))
-		return
+	if pdc.Disk != nil {
+		opts.ReadOnly = pdc.Disk.Readonly
+
+		db, err := pebble.Open(string(pdc.Disk.Directory), opts)
+		if err != nil {
+			return nil, "", err
+		}
+
+		return &pebbleLoadedDatabase{db: db}, filepath.Base(string(pdc.Disk.Directory)), nil
+
+	} else {
+		// Memory != nil
+		db, err := pebble.Open("", &pebble.Options{FS: vfs.NewMem()})
+		if err != nil {
+			return nil, "", err
+		}
+
+		return &pebbleLoadedDatabase{db: db}, `:memory:`, nil // SQLite-style naming
 	}
-
-	ld := &pebbleLoadedDatabase{
-		db:          db,
-		displayName: filepath.Base(dirname),
-	}
-
-	ld.nav = f.Buckets.Items().Add(nil, ld.displayName)
-	ld.nav.SetHasChildren(true) // dynamically populate in OnNavExpanding
-	ld.nav.SetImageIndex(imgDatabase)
-	ld.nav.SetSelectedIndex(imgDatabase)
-	navData := &navData{
-		ld:             ld,
-		childrenLoaded: false,      // will be loaded dynamically
-		bucketPath:     []string{}, // empty = root
-	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
 }

db_redis.go

@@ -4,226 +4,52 @@ import (
 	"context"
 	"fmt"
 	"strconv"
-	"unsafe"
 
-	"yvbolt/lexer"
+	"qbolt/lexer"
 
+	"github.com/mappu/autoconfig"
 	"github.com/redis/go-redis/v9"
-	"github.com/ying32/govcl/vcl"
+	"golang.org/x/crypto/ssh"
 )
 
-type redisLoadedDatabase struct {
-	displayName string
-	db          *redis.Client
-	nav         *vcl.TTreeNode
-
-	currentDb     int
-	maxDb         int
-	serverVersion string // populated at connection-time from INFO command
-
-	arena []*navData // keepalive
+type redisConnectionOptions struct {
+	Address    autoconfig.AddressPort
+	Password   autoconfig.Password
+	UseRespv3  bool `ylabel:"Use RESP v3 protocol"`
+	SSH_Tunnel *SSHTunnel
 }
 
-func (ld *redisLoadedDatabase) DisplayName() string {
-	return ld.displayName
+func (config *redisConnectionOptions) Reset() {
+	config.Address.Port = 6379
 }
 
-func (ld *redisLoadedDatabase) DriverName() string {
-	return "Redis " + ld.serverVersion
-}
-
-func (ld *redisLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
-}
-
-func (ld *redisLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *redisLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
-	ctx := context.Background()
-
-	if len(ndata.bucketPath) == 0 {
-		// Top-level: Show info() on main Properties tab
-		infostr, err := ld.db.Info(ctx).Result()
-		if err != nil {
-			return fmt.Errorf("Retreiving database info: %w", err)
-		}
-
-		f.propertiesBox.SetText(infostr)
-
-		// Leave data tab disabled (default behaviour)
-		return nil
-
-	} else if len(ndata.bucketPath) == 1 {
-		// One selected database
-		// Figure out its content
-		err := ld.db.Do(ctx, "SELECT", ndata.bucketPath[0]).Err()
-		if err != nil {
-			return fmt.Errorf("Switching to database %q: %w", ndata.bucketPath[0], err)
-		}
-
-		allKeys, err := ld.db.Keys(ctx, "*").Result()
-		if err != nil {
-			return fmt.Errorf("Listing keys in database %q: %w", ndata.bucketPath[0], err)
-		}
-
-		f.propertiesBox.SetText(fmt.Sprintf("Database %s\nTotal keys: %d\n", ndata.bucketPath[0], len(allKeys)))
-
-		// Redis always uses Key + Value as the columns
-
-		colKey := f.contentBox.Columns().Add()
-		colKey.Title().SetCaption("Key")
-		colType := f.contentBox.Columns().Add()
-		colType.Title().SetCaption("Type")
-		colVal := f.contentBox.Columns().Add()
-		colVal.Title().SetCaption("Value")
-
-		for _, key := range allKeys {
-			typeName, err := ld.db.Type(ctx, key).Result()
-			if err != nil {
-				return fmt.Errorf("Loading %q/%q: %w", ndata.bucketPath[0], key, err)
-			}
-
-			rpos := f.contentBox.RowCount()
-			f.contentBox.SetRowCount(rpos + 1)
-			f.contentBox.SetCells(0, rpos, formatUtf8([]byte(key)))
-			f.contentBox.SetCells(1, rpos, typeName)
-
-			switch typeName {
-			case "string":
-				val, err := ld.db.Get(ctx, key).Result()
-				if err != nil {
-					return fmt.Errorf("Loading %q/%q: %w", ndata.bucketPath[0], key, err)
-				}
-				f.contentBox.SetCells(2, rpos, val)
-
-			case "hash":
-				val, err := ld.db.HGetAll(ctx, key).Result()
-				if err != nil {
-					return fmt.Errorf("Loading %q/%q: %w", ndata.bucketPath[0], key, err)
-				}
-				// It's a map[string]string
-				f.contentBox.SetCells(2, rpos, formatAny(val))
-
-			case "lists":
-				fallthrough
-			case "sets":
-				fallthrough
-			case "sorted sets":
-				fallthrough
-			case "stream":
-				fallthrough
-
-			default:
-				f.contentBox.SetCells(2, rpos, "<<<other object type>>>")
-			}
-
-		}
-
-		// Valid
-		vcl_stringgrid_columnwidths(f.contentBox)
-		f.contentBox.SetEnabled(true)
-		return nil
-
-	} else {
-		return fmt.Errorf("Unexpected nav position %q", ndata.bucketPath)
-
-	}
-}
-
-func (ld *redisLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
-	// ctx := context.Background()
-
-	if len(ndata.bucketPath) == 0 {
-		// Top-level: list of all child databases (usually 16x)
-		ret := make([]string, 0, ld.maxDb)
-		for i := 0; i < ld.maxDb; i++ {
-			ret = append(ret, fmt.Sprintf("%d", i))
-		}
-		return ret, nil
-
-	} else if len(ndata.bucketPath) == 1 {
-		// One selected database
-		// No child keys underneath it
-		return []string{}, nil
-
-	} else {
-		return nil, fmt.Errorf("Unexpected nav position %q", ndata.bucketPath)
-
-	}
-}
-
-func (ld *redisLoadedDatabase) NavContext(ndata *navData) ([]contextAction, error) {
-	return nil, nil // No special actions are supported
-}
-
-func (ld *redisLoadedDatabase) ExecQuery(query string, resultArea *vcl.TStringGrid) error {
-	ctx := context.Background()
-
-	// Need to parse the query into separate string+args fields for the protocol
-	fields, err := lexer.Fields(query)
-	if err != nil {
-		return fmt.Errorf("Parsing the query: %w", err)
-	}
-
-	fields_boxed := box_interface(fields)
-
-	ret, err := ld.db.Do(ctx, fields_boxed...).Result()
-	if err != nil {
-		return fmt.Errorf("The redis query returned an error: %w", err)
-	}
-
-	vcl_stringgrid_clear(resultArea)
-
-	colVal := resultArea.Columns().Add()
-	colVal.Title().SetCaption("Result")
-
-	// The result is probably a single value or a string slice
-	switch ret := ret.(type) {
-	case []string:
-		// Multiple values
-		for _, single := range ret {
-
-			rpos := resultArea.RowCount()
-			resultArea.SetRowCount(rpos + 1)
-			resultArea.SetCells(0, rpos, formatUtf8([]byte(single)))
-		}
-
-	default:
-		// Single value
-		rpos := resultArea.RowCount()
-		resultArea.SetRowCount(rpos + 1)
-		resultArea.SetCells(0, rpos, formatAny(ret)) // formatUtf8
-
-	}
-
-	vcl_stringgrid_columnwidths(resultArea)
-	resultArea.SetEnabled(true)
-
-	return nil
-}
-
-func (ld *redisLoadedDatabase) Close() {
-	_ = ld.db.Close()
-	ld.arena = nil
-}
-
-var _ loadedDatabase = &redisLoadedDatabase{} // interface assertion
-
-//
-
-func (f *TMainForm) redisConnect(opts *redis.Options) {
-	// TODO load in background thread to stop blocking the UI
-	ctx := context.Background()
+func (config *redisConnectionOptions) Connect(ctx context.Context) (loadedDatabase, string, error) {
 
 	ld := &redisLoadedDatabase{
-		displayName:   opts.Addr,
 		currentDb:     0,
 		maxDb:         1,
 		serverVersion: "<unknown>",
 	}
 
+	opts := redis.Options{
+		Addr:          fmt.Sprintf("%s:%d", config.Address.Address, config.Address.Port),
+		Password:      string(config.Password),
+		UnstableResp3: config.UseRespv3,
+	}
+
+	if config.SSH_Tunnel != nil {
+		sshc, err := config.SSH_Tunnel.Open(ctx)
+		if err != nil {
+			return nil, "", err
+		}
+
+		// When redis wants to open a tcp conn, don't dial directly, dial via the SSH tunnel
+		// Setting 'Dialer' takes priority over Addr/Network fields.
+		// ssh.Client.DialContext has a matching signature to redis.Options.Dialer
+		opts.Dialer = sshc.DialContext
+		ld.sshc = sshc
+	}
+
 	// Patch in a hook to remember current DB after keepalive reconnection
 	opts.DB = 0 // Default
 	opts.OnConnect = func(ctx context.Context, cn *redis.Conn) error {
@@ -231,13 +57,12 @@ func (f *TMainForm) redisConnect(opts *redis.Options) {
 	}
 
 	// NewClient doesn't necessarily connect, so it can't throw an err
-	ld.db = redis.NewClient(opts)
+	ld.db = redis.NewClient(&opts)
 
 	// Make an INFO request (mandatory)
 	info, err := ld.db.InfoMap(ctx).Result()
 	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to connect to Redis server: During INFO: %v", err))
-		return
+		return nil, "", fmt.Errorf("During INFO: %w", err)
 	}
 
 	if serverInfo, ok := info["Server"]; ok {
@@ -253,28 +78,194 @@ func (f *TMainForm) redisConnect(opts *redis.Options) {
 		// Got a result. Must parse it
 		m, err := strconv.ParseInt(maxDatabases["databases"], 10, 64)
 		if err != nil {
-			vcl.ShowMessage(fmt.Sprintf("Failed to connect to Redis server: During CONFIG GET databases: %v", err))
-			return
+			return nil, "", fmt.Errorf("During CONFIG GET databases: %v", err)
 		}
 
 		ld.maxDb = int(m)
 	}
 
-	// Done with setup
+	displayName := config.Address.Address
 
-	ld.nav = f.Buckets.Items().Add(nil, ld.displayName)
-	ld.nav.SetHasChildren(true) // dynamically populate in OnNavExpanding
-	ld.nav.SetImageIndex(imgDatabase)
-	ld.nav.SetSelectedIndex(imgDatabase)
-	navData := &navData{
-		ld:             ld,
-		childrenLoaded: false,      // will be loaded dynamically
-		bucketPath:     []string{}, // empty = root
-	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
+	return ld, displayName, nil
 }
+
+type redisLoadedDatabase struct {
+	db   *redis.Client
+	sshc *ssh.Client
+
+	currentDb     int
+	maxDb         int
+	serverVersion string // populated at connection-time from INFO command
+}
+
+func (ld *redisLoadedDatabase) DriverName() string {
+	return "Redis " + ld.serverVersion
+}
+
+func (ld *redisLoadedDatabase) Properties(bucketPath []string) (string, error) {
+	ctx := context.Background()
+
+	if len(bucketPath) == 0 {
+		// Top-level: Show info() on main Properties tab
+		infostr, err := ld.db.Info(ctx).Result()
+		if err != nil {
+			return "", fmt.Errorf("Retreiving database info: %w", err)
+		}
+
+		return infostr, nil
+
+	} else {
+		return "Database " + bucketPath[0], nil
+	}
+}
+
+func (ld *redisLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
+	ctx := context.Background()
+
+	if len(bucketPath) == 0 {
+		// Leave data tab disabled (default behaviour)
+		return nil
+
+	} else if len(bucketPath) == 1 {
+		// One selected database
+		// Figure out its content
+		err := ld.db.Do(ctx, "SELECT", bucketPath[0]).Err()
+		if err != nil {
+			return fmt.Errorf("Switching to database %q: %w", bucketPath[0], err)
+		}
+
+		allKeys, err := ld.db.Keys(ctx, "*").Result()
+		if err != nil {
+			return fmt.Errorf("Listing keys in database %q: %w", bucketPath[0], err)
+		}
+
+		// Redis always uses Key string, Type string, Value []byte as the columns
+
+		f.SetupColumns(
+			[]columnType{columnType_popupData, columnType_inlineText, columnType_popupData},
+			[]string{"Key", "Type", "Value"},
+		)
+
+		for _, key := range allKeys {
+			typeName, err := ld.db.Type(ctx, key).Result()
+			if err != nil {
+				return fmt.Errorf("Loading %q/%q: %w", bucketPath[0], key, err)
+			}
+
+			rpos := f.AddRow()
+			f.SetCell(rpos, 0, key)
+			f.SetCell(rpos, 1, typeName)
+
+			switch typeName {
+			case "string":
+				val, err := ld.db.Get(ctx, key).Result()
+				if err != nil {
+					return fmt.Errorf("Loading %q/%q: %w", bucketPath[0], key, err)
+				}
+
+				f.SetCell(rpos, 2, []byte(val))
+
+			case "hash":
+				val, err := ld.db.HGetAll(ctx, key).Result()
+				if err != nil {
+					return fmt.Errorf("Loading %q/%q: %w", bucketPath[0], key, err)
+				}
+				// It's a map[string]string
+				f.SetCell(rpos, 2, []byte(formatAny(val)))
+
+			case "lists":
+				fallthrough
+			case "sets":
+				fallthrough
+			case "sorted sets":
+				fallthrough
+			case "stream":
+				fallthrough
+
+			default:
+				f.SetCell(rpos, 2, []byte("<<<other object type>>>"))
+			}
+
+		}
+
+		// Valid
+		f.Ready()
+		return nil
+
+	} else {
+		return fmt.Errorf("Unexpected nav position %q", bucketPath)
+
+	}
+}
+
+func (ld *redisLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	// ctx := context.Background()
+
+	if len(bucketPath) == 0 {
+		// Top-level: list of all child databases (usually 16x)
+		ret := make([]string, 0, ld.maxDb)
+		for i := 0; i < ld.maxDb; i++ {
+			ret = append(ret, fmt.Sprintf("%d", i))
+		}
+		return ret, nil
+
+	} else if len(bucketPath) == 1 {
+		// One selected database
+		// No child keys underneath it
+		return []string{}, nil
+
+	} else {
+		return nil, fmt.Errorf("Unexpected nav position %q", bucketPath)
+
+	}
+}
+
+func (ld *redisLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No special actions are supported
+}
+
+func (ld *redisLoadedDatabase) ExecQuery(query string, _ []string, resultArea *tableState) error {
+	ctx := context.Background()
+
+	// Need to parse the query into separate string+args fields for the protocol
+	fields, err := lexer.Fields(query)
+	if err != nil {
+		return fmt.Errorf("Parsing the query: %w", err)
+	}
+
+	fields_boxed := box_interface(fields)
+
+	ret, err := ld.db.Do(ctx, fields_boxed...).Result()
+	if err != nil {
+		return fmt.Errorf("The redis query returned an error: %w", err)
+	}
+
+	resultArea.SetupColumns([]columnType{columnType_inlineText}, []string{"Result"})
+
+	// The result is probably a single value or a string slice
+	switch ret := ret.(type) {
+	case []string:
+		// Multiple values
+		for _, single := range ret {
+			resultArea.AddRowData(single)
+		}
+
+	default:
+		// Single value
+		// Unknown object type
+		resultArea.AddRowData(formatAny(ret)) // formatUtf8
+	}
+
+	resultArea.Ready()
+	return nil
+}
+
+func (ld *redisLoadedDatabase) Close() {
+	if ld.sshc != nil {
+		_ = ld.sshc.Close() // TODO does this also SIGINT remote processes?
+	}
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &redisLoadedDatabase{}          // interface assertion
+var _ queryableLoadedDatabase = &redisLoadedDatabase{} // interface assertion

db_rosedb.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	"github.com/rosedblabs/rosedb/v2"
+)
+
+type roseLdb struct {
+	db *rosedb.DB
+}
+
+func (ld *roseLdb) DriverName() string {
+	return "RoseDB"
+}
+
+func (ld *roseLdb) Properties(bucketPath []string) (string, error) {
+	stats := ld.db.Stat()
+	return fmt.Sprintf("Statistics: %#v\n", stats), nil
+}
+
+func (ld *roseLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	ld.db.Ascend(func(k, v []byte) (bool, error) {
+		f.AddRow_PK_Data(k, k, v)
+		return true, nil
+	})
+
+	f.Ready()
+	return nil
+}
+
+func (n *roseLdb) ApplyChanges(f *tableState, bucketPath []string) error {
+	return kvstore_ApplyChanges(f, n.db.Put, n.db.Delete)
+}
+
+func (ld *roseLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *roseLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No supported actions
+}
+
+func (ld *roseLdb) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &roseLdb{}         // interface assertion
+var _ editableLoadedDatabase = &roseLdb{} // interface assertion
+
+//
+
+type roseDBConn struct {
+	Directory autoconfig.ExistingDirectory
+}
+
+func (c *roseDBConn) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	options := rosedb.DefaultOptions // copy
+	options.DirPath = string(c.Directory)
+
+	db, err := rosedb.Open(options)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &roseLdb{db: db}, filepath.Base(string(c.Directory)), nil
+}

db_secretsvc_linux.go

@@ -0,0 +1,189 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	dbus "github.com/godbus/dbus/v5"
+	qt "github.com/mappu/miqt/qt6"
+	secretservice "github.com/zalando/go-keyring/secret_service"
+)
+
+type secretServiceDb struct {
+	svc     *secretservice.SecretService
+	session dbus.BusObject
+}
+
+func (ld *secretServiceDb) DriverName() string {
+	return "FreeDesktop.org Secret Service"
+}
+
+func (ld *secretServiceDb) Properties(bucketPath []string) (string, error) {
+	return "", nil // No properties
+}
+
+func (ld *secretServiceDb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	const (
+		collectionBasePath = "/org/freedesktop/secrets/collection/"
+		itemInterface      = "org.freedesktop.Secret.Item"
+		serviceName        = "org.freedesktop.secrets"
+	)
+
+	if len(bucketPath) == 0 {
+		// No data
+	} else if len(bucketPath) == 1 {
+
+		f.SetupColumns(
+			[]columnType{columnType_inlineText, columnType_inlineText, columnType_inlineText, columnType_inlineText, columnType_inlineText, columnType_popupData},
+			[]string{"ID", "Label", "Attributes", "ContentType", "Parameters", "Value"},
+		)
+
+		// Collection is selected
+		collection := ld.svc.GetCollection(bucketPath[0])
+
+		// Perform an empty search to find all items
+		allItems, err := ld.svc.SearchItems(collection, map[string]string{})
+		if err != nil {
+			return err
+		}
+
+		for _, item := range allItems {
+
+			//
+
+			obj := ld.svc.Object(serviceName, item)
+			label, err := obj.GetProperty(itemInterface + ".Label")
+			if err != nil {
+				return fmt.Errorf("Reading label %q: %w", item, err)
+			}
+
+			// Attributes: a map[string]string{}
+			// Is this optional?
+			// Calling attrs.String() gives a JSON representation
+			attrs, err := obj.GetProperty(itemInterface + ".Attributes")
+			if err != nil {
+				return fmt.Errorf("Reading attributes %q: %w", item, err)
+			}
+
+			secr, err := ld.svc.GetSecret(item, ld.session.Path())
+			if err != nil {
+				return fmt.Errorf("Reading secret %q: %w", item, err)
+			}
+
+			f.AddRowData(
+				string(item),            // ID
+				label.Value().(string),  // Label
+				attrs.String(),          // Attributes (JSON)
+				secr.ContentType,        // ContentType
+				string(secr.Parameters), // Parameters
+				secr.Value,              // Value - []byte
+			)
+		}
+
+		// Valid
+		f.Ready()
+	}
+
+	return nil
+}
+
+func (ld *secretServiceDb) listCollections() ([]string, error) {
+
+	const (
+		serviceName          = "org.freedesktop.secrets"
+		servicePath          = "/org/freedesktop/secrets"
+		collectionsInterface = "org.freedesktop.Secret.Service.Collections"
+		collectionBasePath   = "/org/freedesktop/secrets/collection/"
+	)
+
+	obj := ld.svc.Conn.Object(serviceName, servicePath)
+
+	val, err := obj.GetProperty(collectionsInterface)
+	if err != nil {
+		return nil, err
+	}
+	paths := val.Value().([]dbus.ObjectPath)
+
+	ret := make([]string, 0, len(paths))
+	for _, p := range paths {
+		// They are expected to have {collectionBasePath} as prefix
+		colName := string(p)
+		if strings.HasPrefix(colName, collectionBasePath) {
+			colName = colName[len(collectionBasePath):]
+		}
+		ret = append(ret, colName)
+	}
+	return ret, nil
+}
+
+func (ld *secretServiceDb) NavChildren(bucketPath []string) ([]string, error) {
+	if len(bucketPath) == 0 {
+		return ld.listCollections()
+	}
+
+	return []string{}, nil // No children
+}
+
+func (ld *secretServiceDb) newCollection(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	name := qt.QInputDialog_GetText(sender.TreeWidget().QWidget, APPNAME, "Enter a name for the new collection:")
+	if name == "" {
+		return nil // cancelled
+	}
+
+	_, err := ld.svc.CreateCollection(name)
+	return err
+}
+
+func (ld *secretServiceDb) unlockKeychain(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	if len(bucketPath) != 1 {
+		return errors.New("Invalid selection")
+	}
+
+	coll := ld.svc.GetCollection(bucketPath[0])
+	return ld.svc.Unlock(coll.Path())
+}
+
+func (ld *secretServiceDb) NavContext(bucketPath []string) ([]contextAction, error) {
+	if len(bucketPath) == 0 {
+		return []contextAction{
+			contextAction{"Create collection...", ld.newCollection},
+		}, nil
+
+	} else if len(bucketPath) == 1 {
+		return []contextAction{
+			contextAction{"Unlock", ld.unlockKeychain},
+		}, nil
+
+	} else {
+		return nil, nil // Unreachable
+	}
+}
+
+func (ld *secretServiceDb) Close() {
+	_ = ld.svc.Close(ld.session)
+}
+
+var _ loadedDatabase = &secretServiceDb{} // interface assertion
+
+//
+
+type secretServiceConnection struct {
+}
+
+func (ssc *secretServiceConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	svc, err := secretservice.NewSecretService()
+	if err != nil {
+		return nil, "", err
+	}
+
+	session, err := svc.OpenSession()
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &secretServiceDb{svc: svc, session: session}, "dbus://SessionBus/org.freedesktop.secrets", nil
+}

db_secretsvc_other.go

@@ -0,0 +1,19 @@
+//go:build !linux
+// +build !linux
+
+package main
+
+import (
+	"context"
+	"errors"
+
+	"github.com/mappu/autoconfig"
+)
+
+type secretServiceConnection struct {
+	H1 autoconfig.Header `ylabel:"Not supported on this operating system"`
+}
+
+func (ssc *secretServiceConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	return nil, "", errors.New("Not supported on this operating system")
+}

db_sqlite.go

@@ -7,54 +7,38 @@ import (
 	"fmt"
 	"path/filepath"
 	"strings"
-	"unsafe"
 
-	_ "yvbolt/sqliteclidriver"
+	"qbolt/sqliteclidriver"
 
-	"github.com/ying32/govcl/vcl"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	mattn_sqlite3 "github.com/mattn/go-sqlite3"
 )
 
 const (
 	sqliteTablesCaption = "Tables"
-	sqliteFilter        = "SQLite database|*.db;*.db3;*.sqlite;*.sqlite3|All files|*.*"
 )
 
 type sqliteLoadedDatabase struct {
-	displayName string
-	path        string
-	db          *sql.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
+	db *sql.DB
 }
 
-func (ld *sqliteLoadedDatabase) DisplayName() string {
-	return ld.displayName
+func (ld *sqliteLoadedDatabase) DriverName() string {
+	if _, ok := ld.db.Driver().(*sqliteclidriver.SCDriver); ok {
+		return "SQLite (sqliteclidriver)"
+	}
+
+	ver1, _, _ := mattn_sqlite3.Version()
+	return "SQLite " + ver1
 }
 
-func (ld *sqliteLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
-}
+func (ld *sqliteLoadedDatabase) Properties(bucketPath []string) (string, error) {
+	if len(bucketPath) == 0 || len(bucketPath) == 1 {
+		return "Please select...", nil // No properties
 
-func (ld *sqliteLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
+	} else {
 
-func (ld *sqliteLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error {
-
-	if len(ndata.bucketPath) == 0 {
-		// Top-level
-		f.propertiesBox.SetText("Please select...")
-		return nil
-
-	} else if len(ndata.bucketPath) == 1 {
-		// Category (tables, ...)
-		f.propertiesBox.SetText("Please select...")
-		return nil
-
-	} else if len(ndata.bucketPath) == 2 && ndata.bucketPath[0] == sqliteTablesCaption {
-		// Render for specific table
-		tableName := ndata.bucketPath[1]
+		tableName := bucketPath[1]
 
 		// Get some basic properties
 		r := ld.db.QueryRow(`SELECT sql FROM sqlite_schema WHERE name = ?;`, tableName)
@@ -65,7 +49,24 @@ func (ld *sqliteLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error
 		}
 
 		// Display table properties
-		f.propertiesBox.SetText(fmt.Sprintf("Selected table %q\n\nSchema:\n\n%s", tableName, schemaStmt))
+		return fmt.Sprintf("Selected table %q\n\nSchema:\n\n%s", tableName, schemaStmt), nil
+	}
+}
+
+func (ld *sqliteLoadedDatabase) RenderForNav(f *tableState, bucketPath []string) error {
+
+	ctx := context.TODO()
+
+	if len(bucketPath) == 0 {
+		return nil
+
+	} else if len(bucketPath) == 1 {
+		// Category (tables, ...)
+		return nil
+
+	} else if len(bucketPath) == 2 && bucketPath[0] == sqliteTablesCaption {
+		// Render for specific table
+		tableName := bucketPath[1]
 
 		// Load column details
 		// Use SELECT form instead of common PRAGMA table_info so we can just get names
@@ -73,10 +74,18 @@ func (ld *sqliteLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error
 		// work even when there are 0 results
 		columnNames, err := ld.sqliteGetColumnNamesForTable(tableName)
 		if err != nil {
-			return fmt.Errorf("Failed to load columns for table %q: %w", tableName)
+			return fmt.Errorf("Failed to load columns for table %q: %w", tableName, err)
 		}
 
-		populateColumns(columnNames, f.contentBox)
+		populateColumns(columnNames, f)
+
+		// Find primary key, if any
+		var primaryKeyIdx int = -1
+		if primaryKeyColumnName, err := ld.getPrimaryKeyForTable(ctx, ld.db, tableName); err == nil {
+			if search, ok := slice_find(columnNames, primaryKeyColumnName); ok {
+				primaryKeyIdx = search
+			}
+		}
 
 		// Select count(*) so we know to display a warning if there are too many entries
 		// TODO
@@ -87,11 +96,14 @@ func (ld *sqliteLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) error
 			return fmt.Errorf("Failed to load data for table %q: %w", tableName, err)
 		}
 		defer datar.Close()
-		populateRows(datar, f.contentBox)
+
+		err = populateRows(datar, f, primaryKeyIdx)
+		if err != nil {
+			return err
+		}
 
 		// We successfully populated the data grid
-		vcl_stringgrid_columnwidths(f.contentBox)
-		f.contentBox.SetEnabled(true)
+		f.Ready()
 		return nil
 
 	} else {
@@ -128,16 +140,14 @@ func (ld *sqliteLoadedDatabase) sqliteGetColumnNamesForTable(tableName string) (
 	return ret, nil
 }
 
-func populateColumns(names []string, dest *vcl.TStringGrid) {
-	for _, columnName := range names {
-		col := dest.Columns().Add()
-		col.Title().SetCaption(columnName)
-	}
+func populateColumns(names []string, dest *tableState) {
+	// FIXME better column types?
+	dest.SetupColumns(slice_repeat(columnType_inlineText, len(names)), names)
 }
 
-func populateRows(rr *sql.Rows, dest *vcl.TStringGrid) {
+func populateRows(rr *sql.Rows, dest *tableState, pk_index int) error {
 
-	numColumns := int(dest.Columns().Count())
+	numColumns := len(dest.columns)
 
 	for rr.Next() {
 		fields := make([]interface{}, numColumns)
@@ -148,24 +158,23 @@ func populateRows(rr *sql.Rows, dest *vcl.TStringGrid) {
 
 		err := rr.Scan(pfields...)
 		if err != nil {
-			vcl.ShowMessageFmt("Failed to load data: %s", err.Error())
-			return
+			return fmt.Errorf("Scan: %w", err)
 		}
 
-		rpos := dest.RowCount()
-		dest.SetRowCount(rpos + 1)
+		rpos := dest.AddRow()
 		for i := 0; i < len(fields); i += 1 {
-			dest.SetCells(int32(i), rpos, formatAny(fields[i]))
+			dest.SetCell(rpos, i, formatAny(fields[i])) // FIXME stop doing string conversion here
+		}
+
+		if pk_index >= 0 {
+			dest.SetRowPrimaryKey(rpos, []byte(formatAny(fields[pk_index]))) // FIXME stop doing string conversion here
 		}
 
 	}
-	if rr.Err() != nil {
-		vcl.ShowMessageFmt("Failed to load data: %s", rr.Err().Error())
-		return
-	}
+	return rr.Err()
 }
 
-func (ld *sqliteLoadedDatabase) ExecQuery(query string, resultArea *vcl.TStringGrid) error {
+func (ld *sqliteLoadedDatabase) ExecQuery(query string, _ []string, resultArea *tableState) error {
 	rr, err := ld.db.Query(query)
 	if err != nil {
 		return err
@@ -173,8 +182,6 @@ func (ld *sqliteLoadedDatabase) ExecQuery(query string, resultArea *vcl.TStringG
 
 	defer rr.Close()
 
-	vcl_stringgrid_clear(resultArea)
-
 	columns, err := rr.Columns()
 	if err != nil {
 		return err
@@ -182,23 +189,31 @@ func (ld *sqliteLoadedDatabase) ExecQuery(query string, resultArea *vcl.TStringG
 
 	populateColumns(columns, resultArea)
 
-	populateRows(rr, resultArea)
+	err = populateRows(rr, resultArea, -1)
+	if err != nil {
+		return err
+	}
 
-	vcl_stringgrid_columnwidths(resultArea)
-	resultArea.SetEnabled(true)
+	resultArea.Ready()
 	return nil
 }
 
-func (n *sqliteLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) (retErr error) {
+type RowQueryContexter interface {
+	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+}
 
-	if len(ndata.bucketPath) != 2 {
+func (n *sqliteLoadedDatabase) getPrimaryKeyForTable(ctx context.Context, tx RowQueryContexter, tableName string) (string, error) {
+	var primaryColumnName string
+	err := tx.QueryRowContext(ctx, `SELECT l.name FROM pragma_table_info(?) as l WHERE l.pk = 1;`, tableName).Scan(&primaryColumnName)
+	return primaryColumnName, err
+}
+
+func (n *sqliteLoadedDatabase) ApplyChanges(f *tableState, bucketPath []string) (retErr error) {
+
+	if len(bucketPath) != 2 {
 		return errors.New("invalid selection")
 	}
-	tableName := ndata.bucketPath[1]
-
-	// We have rendered row IDs, need to convert back to an SQLite primary key
-	// TODO stash the real key inside f.contentBox.Objects()
-	// FIXME breaks if you try and edit the primary key(!)
+	tableName := bucketPath[1]
 
 	ctx := context.Background()
 
@@ -217,31 +232,12 @@ func (n *sqliteLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) (retEr
 		}
 	}()
 
-	// Data grid properties
-	var columnNames []string
-	for i := int32(0); i < f.contentBox.ColCount(); i++ {
-		columnNames = append(columnNames, f.contentBox.Columns().Items(i).Title().Caption())
-	}
-
 	// Query sqlite table metadata to determine which of these is the PRIMARY KEY
-	var primaryColumnName string
-	err = tx.QueryRowContext(ctx, `SELECT l.name FROM pragma_table_info(?) as l WHERE l.pk = 1;`, tableName).Scan(&primaryColumnName)
+	primaryColumnName, err := n.getPrimaryKeyForTable(ctx, tx, tableName)
 	if err != nil {
 		return fmt.Errorf("Finding primary key for update: %w", err)
 	}
 
-	// Convert it to an index
-	var primaryColumnIdx int = -1
-	for i := 0; i < len(columnNames); i++ {
-		if columnNames[i] == primaryColumnName {
-			primaryColumnIdx = i
-			break
-		}
-	}
-	if primaryColumnIdx == -1 {
-		return fmt.Errorf("Primary key %q missing from available columns", primaryColumnName)
-	}
-
 	// SQLite can only LIMIT 1 on update/delete if it was compiled with
 	// SQLITE_ENABLE_UPDATE_DELETE_LIMIT, which isn't the case for the mattn
 	// cgo library
@@ -249,18 +245,20 @@ func (n *sqliteLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) (retEr
 
 	// Edit
 	for rowid, editcells := range f.updateRows {
-		stmt := `UPDATE "` + tableName + `" SET `
+		stmt := `UPDATE [` + tableName + `] SET `
 		params := []interface{}{} // FIXME reinstate types for the driver (although SQLite doesn't mind)
 
 		for ct, cell := range editcells {
 			if ct > 0 {
 				stmt += `, `
 			}
-			stmt += `"` + columnNames[cell] + `" = ?`
-			params = append(params, f.contentBox.Cells(cell, rowid))
+			stmt += `[` + f.columnLabels[cell] + `] = ?`
+			params = append(params, (f.columns[cell].(*stringColumn)).vals[rowid]) // FIXME stop doing string conversion
 		}
-		stmt += ` WHERE "` + primaryColumnName + `" = ?`
-		pkVal := f.contentBox.Cells(int32(primaryColumnIdx), rowid)
+		stmt += ` WHERE [` + primaryColumnName + `] = ?`
+
+		// Update by primary key (stored separately)
+		pkVal := string(f.primaryKeys[rowid]) // FIXME avoid string marshalling
 		params = append(params, pkVal)
 
 		_, err = tx.ExecContext(ctx, stmt, params...)
@@ -271,9 +269,9 @@ func (n *sqliteLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) (retEr
 
 	// Delete by key (affects rowids after re-render)
 	for rowid, _ := range f.deleteRows {
-		pkVal := f.contentBox.Cells(int32(primaryColumnIdx), rowid)
+		pkVal := string(f.primaryKeys[rowid]) // FIXME avoid string marshalling
 
-		stmt := `DELETE FROM "` + tableName + `" WHERE "` + primaryColumnName + `" = ?`
+		stmt := `DELETE FROM [` + tableName + `] WHERE [` + primaryColumnName + `] = ?`
 
 		_, err = tx.ExecContext(ctx, stmt, pkVal)
 		if err != nil {
@@ -283,15 +281,15 @@ func (n *sqliteLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) (retEr
 
 	// Insert all new entries
 	for rowid, _ := range f.insertRows {
-		stmt := `INSERT INTO "` + tableName + `" (` + strings.Join(columnNames, `, `) + `) VALUES (`
+		stmt := `INSERT INTO [` + tableName + `] ([` + strings.Join(f.columnLabels, `], [`) + `]) VALUES (`
 		params := []interface{}{} // FIXME reinstate types for the driver (although SQLite doesn't mind)
 
-		for colid := 0; colid < len(columnNames); colid++ {
+		for colid := 0; colid < len(f.columnLabels); colid++ {
 			if colid > 0 {
 				stmt += `, `
 			}
 			stmt += "?"
-			params = append(params, f.contentBox.Cells(int32(colid), rowid))
+			params = append(params, (f.columns[colid].(*stringColumn)).vals[rowid]) // FIXME stop doing string conversion
 		}
 		stmt += `)`
 
@@ -310,14 +308,14 @@ func (n *sqliteLoadedDatabase) ApplyChanges(f *TMainForm, ndata *navData) (retEr
 	return nil
 }
 
-func (ld *sqliteLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
+func (ld *sqliteLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
 
-	if len(ndata.bucketPath) == 0 {
+	if len(bucketPath) == 0 {
 		// The top-level children are always:
 		return []string{sqliteTablesCaption}, nil
 	}
 
-	if len(ndata.bucketPath) == 1 && ndata.bucketPath[0] == sqliteTablesCaption {
+	if len(bucketPath) == 1 && bucketPath[0] == sqliteTablesCaption {
 		rr, err := ld.db.Query(`SELECT name FROM sqlite_master WHERE type='table' ORDER BY name ASC;`)
 		if err != nil {
 			return nil, err
@@ -341,54 +339,51 @@ func (ld *sqliteLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
 		return gather, nil
 	}
 
-	if len(ndata.bucketPath) == 2 {
+	if len(bucketPath) == 2 {
 		return nil, nil // Never any deeper children
 	}
 
-	return nil, fmt.Errorf("unknown nav path %#v", ndata.bucketPath)
+	return nil, fmt.Errorf("unknown nav path %#v", bucketPath)
 }
 
-func (ld *sqliteLoadedDatabase) NavContext(ndata *navData) (ret []contextAction, err error) {
+func (ld *sqliteLoadedDatabase) NavContext(bucketPath []string) (ret []contextAction, err error) {
 
-	if len(ndata.bucketPath) == 0 {
+	if len(bucketPath) == 0 {
 		ret = append(ret, contextAction{"Compact database", ld.CompactDatabase})
 		ret = append(ret, contextAction{"Export backup...", ld.ExportBackup})
 	}
-	if len(ndata.bucketPath) == 2 {
+	if len(bucketPath) == 2 {
 		ret = append(ret, contextAction{"Drop table", ld.DropTable})
 	}
 	return
 }
 
-func (ld *sqliteLoadedDatabase) CompactDatabase(sender vcl.IComponent, ndata *navData) error {
+func (ld *sqliteLoadedDatabase) CompactDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
 	_, err := ld.db.Exec(`VACUUM;`)
 	return err
 }
 
-func (ld *sqliteLoadedDatabase) ExportBackup(sender vcl.IComponent, ndata *navData) error {
+func (ld *sqliteLoadedDatabase) ExportBackup(sender *qt.QTreeWidgetItem, bucketPath []string) error {
 	// Popup for output file
-	dlg := vcl.NewSaveDialog(sender)
-	dlg.SetTitle("Save backup as...")
-	dlg.SetFilter(sqliteFilter)
-	ret := dlg.Execute() // Fake blocking
-	if !ret {
+	savePath := qt.QFileDialog_GetSaveFileName4(sender.TreeWidget().QWidget, "Save backup as...", "", "SQLite database (*.db *.db3 *.sqlite *.sqlite3);;All files (*)")
+	if savePath == "" {
 		return nil // cancelled
 	}
 
-	_, err := ld.db.Exec(`VACUUM INTO ?`, dlg.FileName())
+	_, err := ld.db.Exec(`VACUUM INTO ?`, savePath)
 	return err
 }
 
-func (ld *sqliteLoadedDatabase) DropTable(sender vcl.IComponent, ndata *navData) error {
-	if len(ndata.bucketPath) != 2 {
+func (ld *sqliteLoadedDatabase) DropTable(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	if len(bucketPath) != 2 {
 		return errors.New("Invalid selection")
 	}
 
 	//
 
-	tableName := ndata.bucketPath[1]
+	tableName := bucketPath[1]
 
-	if !vcl_confirm_dialog(sender, "Drop table", fmt.Sprintf("Are you sure you want to drop the table %q?", tableName)) {
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, fmt.Sprintf("Are you sure you want to drop the table %q?", tableName)) {
 		return nil // cancelled
 	}
 
@@ -398,46 +393,64 @@ func (ld *sqliteLoadedDatabase) DropTable(sender vcl.IComponent, ndata *navData)
 
 func (ld *sqliteLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
-var _ loadedDatabase = &sqliteLoadedDatabase{} // interface assertion
+var _ loadedDatabase = &sqliteLoadedDatabase{}          // interface assertion
+var _ editableLoadedDatabase = &sqliteLoadedDatabase{}  // interface assertion
+var _ queryableLoadedDatabase = &sqliteLoadedDatabase{} // interface assertion
 
 //
 
-func (f *TMainForm) sqliteAddDatabaseFromFile(path string, cliDriver bool) {
-
-	driver := "sqlite3"
-	if cliDriver {
-		driver = "sqliteclidriver"
-	}
-
-	// TODO load in background thread to stop blocking the UI
-	db, err := sql.Open(driver, path)
-	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database '%s': %s", path, err.Error()))
-		return
-	}
-
-	ld := &sqliteLoadedDatabase{
-		path:        path,
-		displayName: filepath.Base(path),
-		db:          db,
-	}
-
-	ld.nav = f.Buckets.Items().Add(nil, ld.displayName)
-	ld.nav.SetImageIndex(imgDatabase)
-	ld.nav.SetSelectedIndex(imgDatabase)
-	ld.nav.SetHasChildren(true) // dynamically populate in OnNavExpanding
-	navData := &navData{
-		ld:             ld,
-		childrenLoaded: false,      // will be loaded dynamically
-		bucketPath:     []string{}, // empty = root
-	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
+type sqliteConnection struct {
+	Type autoconfig.OneOf
+	Disk *struct {
+		Database  autoconfig.ExistingFile `yfilter:"SQLite database (*.db *.db3 *.sqlite *.sqlite3);;All files (*)"`
+		CliDriver bool                    `ylabel:"Use experimental CLI driver"`
+	} `json:",omitempty"`
+	Memory *struct{} `json:",omitempty"`
+	SSH    *struct {
+		SSHServer *SSHTunnel
+		Database  string
+	} `json:",omitempty"`
+}
+
+func (sc *sqliteConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	if sc.Disk != nil {
+		driver := "sqlite3"
+		if sc.Disk.CliDriver {
+			driver = "sqliteclidriver"
+		}
+
+		db, err := sql.Open(driver, string(sc.Disk.Database))
+		if err != nil {
+			return nil, "", err
+		}
+
+		return &sqliteLoadedDatabase{db: db}, filepath.Base(string(sc.Disk.Database)), nil
+
+	} else if sc.Memory != nil { // memory
+		db, err := sql.Open("sqlite3", ":memory:")
+		if err != nil {
+			return nil, "", err
+		}
+
+		return &sqliteLoadedDatabase{db: db}, ":memory:", nil
+
+	} else if sc.SSH != nil {
+		if sc.SSH.SSHServer == nil {
+			return nil, "", errors.New("Invalid configuration")
+		}
+
+		cl, err := sc.SSH.SSHServer.Open(ctx)
+		if err != nil {
+			return nil, "", err
+		}
+
+		db := sqliteclidriver.OpenSSH(cl, sc.SSH.Database)
+
+		return &sqliteLoadedDatabase{db: db}, "SSH[" + filepath.Base(string(sc.SSH.Database)) + "]", nil
+
+	} else {
+		return nil, "", errors.New("Invalid configuration")
+	}
 }

db_sqlite_cgo.go

@@ -1,18 +0,0 @@
-//+build cgo
-
-package main
-
-import (
-	"yvbolt/sqliteclidriver"
-
-	sqlite3 "github.com/mattn/go-sqlite3"
-)
-
-func (ld *sqliteLoadedDatabase) DriverName() string {
-	if _, ok := ld.db.Driver().(*sqliteclidriver.SCDriver); ok {
-		return "SQLite (sqliteclidriver)"
-	}
-
-	ver1, _, _ := sqlite3.Version()
-	return "SQLite " + ver1
-}

db_sqlite_nocgo.go

@@ -1,17 +0,0 @@
-//+build !cgo
-
-package main
-
-import (
-	"yvbolt/sqliteclidriver"
-
-	_ "modernc.org/sqlite"
-)
-
-func (ld *sqliteLoadedDatabase) DriverName() string {
-	if _, ok := ld.db.Driver().(*sqliteclidriver.SCDriver); ok {
-		return "SQLite (sqliteclidriver)"
-	}
-
-	return "SQLite (modernc.org)"
-}

db_sshagent.go

@@ -0,0 +1,179 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/netip"
+	"os"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"golang.org/x/crypto/ssh/agent"
+)
+
+type sshAgentLdb struct {
+	conn agent.ExtendedAgent
+}
+
+func (ld *sshAgentLdb) DriverName() string {
+	return "ssh-agent"
+}
+
+func (ld *sshAgentLdb) Properties(bucketPath []string) (string, error) {
+	return "", nil
+}
+
+func (ld *sshAgentLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	keys, err := ld.conn.List()
+	if err != nil {
+		return err
+	}
+
+	f.SetupColumns([]columnType{columnType_inlineText, columnType_inlineText, columnType_popupData}, []string{"Comment", "Type", "Public Key"})
+
+	for _, key := range keys {
+		// The publicKey blob is the effective primary-key for DB manipulation
+		f.AddRow_PK_Data(key.Blob, key.Comment, key.Format, key.Blob)
+	}
+
+	f.Ready()
+	return nil
+}
+
+func (ld *sshAgentLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *sshAgentLdb) lockPrompt(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	parent := sender.TreeWidget().QWidget
+	props := encryptionKey{}
+	autoconfig.OpenDialog(&props, parent, "Enter lock password...", func() {
+
+		key, err := props.Get()
+		if err != nil {
+			qt.QMessageBox_Warning(parent, APPNAME, err.Error())
+			return
+		}
+
+		if len(key) == 0 {
+			// Cancelled
+			return
+		}
+
+		err = ld.conn.Lock(key)
+		if err != nil {
+			qt.QMessageBox_Warning(parent, APPNAME, "Locking SSH agent: "+err.Error())
+			return
+		}
+	})
+
+	return nil // n.b. refreshes now
+}
+
+func (ld *sshAgentLdb) unlockPrompt(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	parent := sender.TreeWidget().QWidget
+	props := encryptionKey{}
+	autoconfig.OpenDialog(&props, parent, "Enter unlock password...", func() {
+
+		key, err := props.Get()
+		if err != nil {
+			qt.QMessageBox_Warning(parent, APPNAME, err.Error())
+			return
+		}
+
+		if len(key) == 0 {
+			// Cancelled
+			return
+		}
+
+		err = ld.conn.Unlock(key)
+		if err != nil {
+			qt.QMessageBox_Warning(parent, APPNAME, "Unlocking SSH agent: "+err.Error())
+			return
+		}
+
+		// Trigger a refresh
+	})
+
+	return nil // n.b. refreshes now, which may cause double-error if we are still locked
+}
+
+func (ld *sshAgentLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return []contextAction{
+		{"Lock agent...", ld.lockPrompt},
+		{"Unlock agent...", ld.unlockPrompt},
+	}, nil
+}
+
+func (ld *sshAgentLdb) Close() {
+	// noop
+}
+
+var _ loadedDatabase = &sshAgentLdb{} // interface assertion
+
+//
+
+type sshAgentConn struct {
+	Type autoconfig.OneOf
+	Unix *autoconfig.ExistingFile `json:",omitempty"`
+	TCP  *autoconfig.AddressPort  `json:",omitempty"`
+}
+
+func (c *sshAgentConn) Reset() {
+
+	if sshAuthSock := os.Getenv("SSH_AUTH_SOCK"); sshAuthSock != "" {
+		if _, err := os.Stat(sshAuthSock); err == nil {
+			// File
+			c.Type = "Unix"
+			val := autoconfig.ExistingFile(sshAuthSock)
+			c.Unix = &val
+
+		} else if props, err := netip.ParseAddrPort(sshAuthSock); err == nil {
+			// IP:Port
+			c.Type = "TCP"
+			val := autoconfig.AddressPort{
+				Address: props.Addr().String(),
+				Port:    int(props.Port()),
+			}
+			c.TCP = &val
+
+		} else {
+			// Can't parse env var
+		}
+	}
+}
+
+func (c *sshAgentConn) getAgent() (agent.ExtendedAgent, error) {
+
+	if c.Unix != nil {
+		conn, err := net.Dial("unix", string(*c.Unix))
+		if err != nil {
+			return nil, fmt.Errorf("Connecting to SSH agent %q: %w", c.Unix, err)
+		}
+
+		return agent.NewClient(conn), nil
+
+	} else if c.TCP != nil {
+		conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", c.TCP.Address, c.TCP.Port))
+		if err != nil {
+			return nil, fmt.Errorf("Connecting to SSH agent %q: %w", c.TCP.String(), err)
+		}
+
+		return agent.NewClient(conn), nil
+
+	} else {
+		return nil, fmt.Errorf("No connection details specified")
+
+	}
+}
+
+func (c *sshAgentConn) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	agent, err := c.getAgent()
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &sshAgentLdb{conn: agent}, "SSH Agent", nil
+}

db_starskey.go

@@ -0,0 +1,115 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	"github.com/starskey-io/starskey"
+)
+
+type starskeyLdb struct {
+	db *starskey.Starskey
+}
+
+func (ld *starskeyLdb) DriverName() string {
+	return "Starskey"
+}
+
+func (ld *starskeyLdb) Properties(bucketPath []string) (string, error) {
+	return "", nil // No properties
+}
+
+func (ld *starskeyLdb) RenderForNav(f *tableState, bucketPath []string) error {
+
+	// Load data
+	// Starskey always uses Key + Value as the columns
+
+	f.SetupColumns([]columnType{columnType_popupData, columnType_popupData}, []string{"Key", "Value"})
+
+	// It's possible to create a transaction in Starskey, but you can't enumerate keys
+	// within the transaction - doesn't really help us
+
+	var allKeys [][]byte
+	_, err := ld.db.FilterKeys(func(key []byte) bool {
+		allKeys = append(allKeys, slice_dup(key))
+		return false // don't get value in here
+	})
+	if err != nil {
+		return fmt.Errorf("FilterKeys: %w", err)
+	}
+
+	for _, key := range allKeys {
+		val, err := ld.db.Get(key)
+		if err != nil {
+			// We get <nil, nil> if not found, so any error is a real error
+			return fmt.Errorf("Reading key %q: %w", string(key), err)
+		}
+		if val == nil {
+			// Key not found
+			// The hack to use FilterKeys() means this can happen if the key is
+			// pointing to a tombstone
+			continue
+		}
+
+		f.AddRow_PK_Data(key, key, val)
+	}
+
+	// Valid
+	f.Ready()
+	return nil
+}
+
+func (n *starskeyLdb) ApplyChanges(f *tableState, bucketPath []string) error {
+	return kvstore_ApplyChanges(f, n.db.Put, n.db.Delete)
+}
+
+func (ld *starskeyLdb) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
+
+func (ld *starskeyLdb) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No special actions are supported
+}
+
+func (ld *starskeyLdb) Close() {
+	_ = ld.db.Close()
+}
+
+var _ loadedDatabase = &starskeyLdb{}         // interface assertion
+var _ editableLoadedDatabase = &starskeyLdb{} // interface assertion
+
+//
+
+type starskeyConnection struct {
+	Directory   autoconfig.ExistingDirectory
+	Compression autoconfig.EnumList `yenum:"No compression;;Snappy;;S2"`
+}
+
+func (pdc *starskeyConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+
+	cfg := starskey.Config{
+		Permission:     0755,
+		Directory:      string(pdc.Directory),
+		FlushThreshold: (1024 * 1024) * 24, // Upstream default (24 MiB)
+		MaxLevel:       3,                  // Upstream default
+		SizeFactor:     10,                 // Upstream default
+	}
+
+	if pdc.Compression == 0 {
+	} else if pdc.Compression == 1 {
+		cfg.Compression = true
+		cfg.CompressionOption = starskey.SnappyCompression
+	} else if pdc.Compression == 2 {
+		cfg.Compression = true
+		cfg.CompressionOption = starskey.S2Compression
+	}
+
+	db, err := starskey.Open(&cfg)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &starskeyLdb{db: db}, filepath.Base(string(pdc.Directory)), nil
+}

debconf/debconf.go

@@ -18,11 +18,26 @@ type Entry struct {
 	Properties [][2]string
 }
 
+type Application struct {
+	Name    string
+	Entries []Entry
+}
+
 type Database struct {
-	Entries        []Entry
+	Entries        []Application
 	AllColumnNames []string
 }
 
+func (d *Database) FindApplicationByName(search string) (*Application, bool) {
+	for idx, app := range d.Entries {
+		if app.Name == search {
+			return &d.Entries[idx], true // TODO faster lookup?
+		}
+	}
+
+	return nil, false
+}
+
 func Parse(r io.Reader) (*Database, error) {
 	sc := bufio.NewScanner(r)
 
@@ -87,8 +102,31 @@ func Parse(r io.Reader) (*Database, error) {
 		entries = append(entries, wip)
 	}
 
+	// Group all entries by Application
+
+	apps := make([]Application, 0)
+	appIndexes := make(map[string]int, 0)
+
+	for _, entry := range entries {
+		spos := strings.Index(entry.Name, `/`)
+		appName := entry.Name[0:spos]
+
+		idx, ok := appIndexes[appName]
+		if !ok {
+			appIndexes[appName] = len(apps)
+			apps = append(apps, Application{
+				Name:    appName,
+				Entries: []Entry{entry},
+			})
+		} else {
+			tmp := apps[idx]
+			tmp.Entries = append(tmp.Entries, entry)
+			apps[idx] = tmp
+		}
+	}
+
 	return &Database{
-		Entries:        entries,
+		Entries:        apps,
 		AllColumnNames: discoveredColumns,
 	}, nil
 }

embed.go

@@ -0,0 +1,17 @@
+package main
+
+//go:generate miqt-rcc -Input "embed.qrc" -OutputGo "embed.go" -OutputRcc "embed.rcc" -Qt6
+
+import (
+	"embed"
+
+	qt "github.com/mappu/miqt/qt6"
+)
+
+//go:embed embed.rcc
+var _resourceRcc []byte
+
+func init() {
+	_ = embed.FS{}
+	qt.QResource_RegisterResourceWithRccData(&_resourceRcc[0])
+}

embed.qrc

@@ -0,0 +1,49 @@
+<RCC>
+  <qresource prefix="/">
+    <file>assets/add.png</file>
+    <file>assets/arrow_refresh.png</file>
+    <file>assets/chart_bar.png</file>
+    <file>assets/compress.png</file>
+    <file>assets/connect.png</file>
+    <file>assets/database.png</file>
+    <file>assets/database_add.png</file>
+    <file>assets/database_delete.png</file>
+    <file>assets/database_key.png</file>
+    <file>assets/database_lightning.png</file>
+    <file>assets/database_save.png</file>
+    <file>assets/delete.png</file>
+    <file>assets/disconnect.png</file>
+    <file>assets/help.png</file>
+    <file>assets/key.png</file>
+    <file>assets/lightning.png</file>
+    <file>assets/lightning_go.png</file>
+    <file>assets/page_key.png</file>
+    <file>assets/pencil.png</file>
+    <file>assets/pencil_add.png</file>
+    <file>assets/pencil_delete.png</file>
+    <file>assets/pencil_go.png</file>
+    <file>assets/resultset_next.png</file>
+    <file>assets/table.png</file>
+    <file>assets/table_add.png</file>
+    <file>assets/table_delete.png</file>
+    <file>assets/table_save.png</file>
+    <file>assets/vendor_buntdb.png</file>
+    <file>assets/vendor_cockroach.png</file>
+    <file>assets/vendor_debian.png</file>
+    <file>assets/vendor_dgraph.png</file>
+    <file>assets/vendor_freedesktop.png</file>
+    <file>assets/vendor_github.png</file>
+    <file>assets/vendor_leveldb.png</file>
+    <file>assets/vendor_lmdb.png</file>
+    <file>assets/vendor_lotus.png</file>
+    <file>assets/vendor_mongodb.png</file>
+    <file>assets/vendor_mysql.png</file>
+    <file>assets/vendor_qt.png</file>
+    <file>assets/vendor_redis.png</file>
+    <file>assets/vendor_riak.png</file>
+    <file>assets/vendor_rosedb.png</file>
+    <file>assets/vendor_sqlite.png</file>
+    <file>assets/vendor_ssh.png</file>
+    <file>assets/vendor_starskey.png</file>
+  </qresource>
+</RCC>

go.mod

@@ -1,68 +1,101 @@
-module yvbolt
+module qbolt
 
-go 1.19
+go 1.24.0
+
+toolchain go1.24.4
 
 require (
-	github.com/cockroachdb/pebble v1.0.0
-	github.com/dgraph-io/badger/v4 v4.2.0
+	github.com/cockroachdb/pebble v1.1.5
+	github.com/dgraph-io/badger/v4 v4.8.0
+	github.com/godbus/dbus/v5 v5.2.0
 	github.com/google/uuid v1.6.0
-	github.com/mattn/go-sqlite3 v1.14.22
-	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c
-	github.com/redis/go-redis/v9 v9.5.3
-	github.com/stretchr/testify v1.9.0
-	github.com/ying32/govcl v2.2.3+incompatible
-	go.etcd.io/bbolt v1.4.0-alpha.1
-	modernc.org/sqlite v1.24.0
+	github.com/ledgerwatch/lmdb-go v1.18.2
+	github.com/lotusdblabs/lotusdb/v2 v2.1.0
+	github.com/mappu/autoconfig v0.4.1
+	github.com/mappu/miqt v0.12.1-0.20251106063543-466b60e47edf
+	github.com/mattn/go-sqlite3 v1.14.32
+	github.com/redis/go-redis/v9 v9.17.2
+	github.com/rosedblabs/rosedb/v2 v2.3.6
+	github.com/starskey-io/starskey v0.1.9
+	github.com/stretchr/testify v1.11.1
+	github.com/syndtr/goleveldb v1.0.0
+	github.com/zalando/go-keyring v0.2.6
+	go.etcd.io/bbolt v1.4.3
+	go.mills.io/bitcask/v2 v2.1.5
+	go.mongodb.org/mongo-driver/v2 v2.4.1
+	golang.org/x/crypto v0.46.0
 )
 
 require (
-	github.com/DataDog/zstd v1.4.5 // indirect
+	al.essio.dev/pkg/shellescape v1.6.0 // indirect
+	github.com/DataDog/zstd v1.5.7 // indirect
+	github.com/abcum/lcp v0.0.0-20201209214815-7a3f3840be81 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/cockroachdb/errors v1.11.3 // indirect
-	github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect
-	github.com/cockroachdb/redact v1.1.5 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/dgraph-io/ristretto v0.1.1 // indirect
+	github.com/bwmarrin/snowflake v0.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cockroachdb/errors v1.12.0 // indirect
+	github.com/cockroachdb/fifo v0.0.0-20240816210425-c5d0cb0b6fc0 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20241215232642-bb51bb14a506 // indirect
+	github.com/cockroachdb/redact v1.1.6 // indirect
+	github.com/cockroachdb/tokenbucket v0.0.0-20250429170803-42689b6311bb // indirect
+	github.com/danieljoos/wincred v1.2.3 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/dgraph-io/ristretto/v2 v2.3.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/getsentry/sentry-go v0.27.0 // indirect
+	github.com/getsentry/sentry-go v0.40.0 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gofrs/flock v0.8.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/glog v1.0.0 // indirect
-	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/flatbuffers v1.12.1 // indirect
-	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
-	github.com/klauspost/compress v1.16.0 // indirect
+	github.com/golang/snappy v1.0.0 // indirect
+	github.com/google/btree v1.1.2 // indirect
+	github.com/google/flatbuffers v25.9.23+incompatible // indirect
+	github.com/hashicorp/go-immutable-radix/v2 v2.0.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/klauspost/compress v1.18.2 // indirect
+	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
-	github.com/mattn/go-isatty v0.0.17 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/mattetti/filebuffer v1.0.1 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_golang v1.12.0 // indirect
-	github.com/prometheus/client_model v0.2.1-0.20210607210712-147c58e9608a // indirect
-	github.com/prometheus/common v0.32.1 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
-	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
-	github.com/rogpeppe/go-internal v1.9.0 // indirect
-	go.opencensus.io v0.22.5 // indirect
-	golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df // indirect
-	golang.org/x/mod v0.18.0 // indirect
-	golang.org/x/net v0.23.0 // indirect
-	golang.org/x/sys v0.19.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/tools v0.13.0 // indirect
-	google.golang.org/protobuf v1.33.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/prometheus/client_golang v1.23.2 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.67.4 // indirect
+	github.com/prometheus/procfs v0.19.2 // indirect
+	github.com/robfig/cron/v3 v3.0.0 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
+	github.com/rosedblabs/diskhash v0.0.0-20230910084041-289755737e2a // indirect
+	github.com/rosedblabs/wal v1.3.6 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/tidwall/btree v1.7.0 // indirect
+	github.com/tidwall/buntdb v1.3.2 // indirect
+	github.com/tidwall/gjson v1.14.3 // indirect
+	github.com/tidwall/grect v0.1.4 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
+	github.com/tidwall/rtred v0.1.2 // indirect
+	github.com/tidwall/tinyqueue v0.1.1 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.2.0 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
+	github.com/zeebo/xxh3 v1.0.2 // indirect
+	go.mongodb.org/mongo-driver v1.17.6 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/otel v1.39.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	golang.org/x/exp v0.0.0-20251209150349-8475f28825e9 // indirect
+	golang.org/x/net v0.48.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	lukechampine.com/uint128 v1.2.0 // indirect
-	modernc.org/cc/v3 v3.40.0 // indirect
-	modernc.org/ccgo/v3 v3.16.13 // indirect
-	modernc.org/libc v1.22.5 // indirect
-	modernc.org/mathutil v1.5.0 // indirect
-	modernc.org/memory v1.5.0 // indirect
-	modernc.org/opt v0.1.3 // indirect
-	modernc.org/strutil v1.1.3 // indirect
-	modernc.org/token v1.0.1 // indirect
 )

go.sum

@@ -1,590 +1,296 @@
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-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

images.go

@@ -1,91 +0,0 @@
-package main
-
-import (
-	"embed"
-
-	"github.com/ying32/govcl/vcl"
-)
-
-//go:embed assets/*
-var assetsFs embed.FS
-
-const (
-	imgAdd int32 = iota
-	imgArrowRefresh
-	imgChartBar
-	imgDatabase
-	imgDatabaseAdd
-	imgDatabaseDelete
-	imgDatabaseLightning
-	imgDatabaseSave
-	imgDelete
-	imgLightning
-	imgLightningGo
-	imgPencil
-	imgPencilAdd
-	imgPencilDelete
-	imgPencilGo
-	imgResultsetNext
-	imgTable
-	imgTableAdd
-	imgTableDelete
-	imgTableSave
-	imgVendorCockroach
-	imgVendorDebian
-	imgVendorDgraph
-	imgVendorGithub
-	imgVendorMySQL
-	imgVendorRedis
-	imgVendorSqlite
-)
-
-func loadImages(owner vcl.IComponent) *vcl.TImageList {
-
-	mustLoad := func(n string) *vcl.TBitmap {
-		imgData, err := assetsFs.ReadFile(n)
-		if err != nil {
-			panic(err)
-		}
-
-		png := vcl.NewPngImage()
-		png.LoadFromBytes(imgData)
-
-		ret := vcl.NewBitmap()
-		ret.Assign(png)
-		return ret
-	}
-
-	ilist := vcl.NewImageList(owner)
-
-	// ls assets | sort | sed -re 's~(.+)~ilist.Add(mustLoad("assets/\1"), nil)~'
-	ilist.Add(mustLoad("assets/add.png"), nil)
-	ilist.Add(mustLoad("assets/arrow_refresh.png"), nil)
-	ilist.Add(mustLoad("assets/chart_bar.png"), nil)
-	ilist.Add(mustLoad("assets/database.png"), nil)
-	ilist.Add(mustLoad("assets/database_add.png"), nil)
-	ilist.Add(mustLoad("assets/database_delete.png"), nil)
-	ilist.Add(mustLoad("assets/database_lightning.png"), nil)
-	ilist.Add(mustLoad("assets/database_save.png"), nil)
-	ilist.Add(mustLoad("assets/delete.png"), nil)
-	ilist.Add(mustLoad("assets/lightning.png"), nil)
-	ilist.Add(mustLoad("assets/lightning_go.png"), nil)
-	ilist.Add(mustLoad("assets/pencil.png"), nil)
-	ilist.Add(mustLoad("assets/pencil_add.png"), nil)
-	ilist.Add(mustLoad("assets/pencil_delete.png"), nil)
-	ilist.Add(mustLoad("assets/pencil_go.png"), nil)
-	ilist.Add(mustLoad("assets/resultset_next.png"), nil)
-	ilist.Add(mustLoad("assets/table.png"), nil)
-	ilist.Add(mustLoad("assets/table_add.png"), nil)
-	ilist.Add(mustLoad("assets/table_delete.png"), nil)
-	ilist.Add(mustLoad("assets/table_save.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_cockroach.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_debian.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_dgraph.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_github.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_mysql.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_redis.png"), nil)
-	ilist.Add(mustLoad("assets/vendor_sqlite.png"), nil)
-
-	return ilist
-
-}

loadedDatabase.go

@@ -3,39 +3,30 @@ package main
 import (
 	"errors"
 
-	"github.com/ying32/govcl/vcl"
+	qt "github.com/mappu/miqt/qt6"
 )
 
 var ErrNavNotExist error = errors.New("The selected item no longer exists")
 
 type contextAction struct {
 	Name     string
-	Callback func(sender vcl.IComponent, ndata *navData) error
+	Callback func(sender *qt.QTreeWidgetItem, bucketPath []string) error
 }
 
 // loadedDatabase is a DB-agnostic interface for each loaded database.
 type loadedDatabase interface {
-	DisplayName() string
 	DriverName() string
-	RootElement() *vcl.TTreeNode
-	RenderForNav(f *TMainForm, ndata *navData) error
-	NavChildren(ndata *navData) ([]string, error)
-	NavContext(ndata *navData) ([]contextAction, error)
-	Keepalive(ndata *navData)
+	Properties(bucketPath []string) (string, error)
+	RenderForNav(f *tableState, bucketPath []string) error
+	NavChildren(bucketPath []string) ([]string, error)
+	NavContext(bucketPath []string) ([]contextAction, error)
 	Close()
 }
 
 type queryableLoadedDatabase interface {
-	ExecQuery(query string, resultArea *vcl.TStringGrid) error
+	ExecQuery(query string, bucketPath []string, resultArea *tableState) error
 }
 
 type editableLoadedDatabase interface {
-	ApplyChanges(f *TMainForm, ndata *navData) error
-}
-
-// navData is the .Data() pointer for each TTreeNode in the left-hand tree.
-type navData struct {
-	ld             loadedDatabase
-	childrenLoaded bool
-	bucketPath     []string
+	ApplyChanges(f *tableState, bucketPath []string) error
 }

mainwindow.go

@@ -0,0 +1,373 @@
+// Generated by miqt-uic. To update this file, edit the .ui file in
+// Qt Designer, and then run 'go generate'.
+//
+//go:generate miqt-uic -InFile mainwindow.ui -OutFile mainwindow.go -Qt6
+
+package main
+
+import (
+	qt "github.com/mappu/miqt/qt6"
+)
+
+type MainWindowUi struct {
+	MainWindow                          *qt.QMainWindow
+	centralwidget                       *qt.QWidget
+	gridLayout                          *qt.QGridLayout
+	splitter                            *qt.QSplitter
+	Buckets                             *qt.QTreeWidget
+	tabWidget                           *qt.QTabWidget
+	tabProperties                       *qt.QWidget
+	gridLayout_2                        *qt.QGridLayout
+	propertiesBox                       *qt.QTextEdit
+	tabData                             *qt.QWidget
+	verticalLayout                      *qt.QVBoxLayout
+	contentBox                          *qt.QTableView
+	tabQuery                            *qt.QWidget
+	verticalLayout_2                    *qt.QVBoxLayout
+	splitter_2                          *qt.QSplitter
+	queryInput                          *qt.QPlainTextEdit
+	queryResult                         *qt.QTableView
+	menubar                             *qt.QMenuBar
+	menu_File                           *qt.QMenu
+	menu_Query                          *qt.QMenu
+	menu_Help                           *qt.QMenu
+	menu_Data                           *qt.QMenu
+	menu_Tools                          *qt.QMenu
+	statusbar                           *qt.QStatusBar
+	toolBar                             *qt.QToolBar
+	actionE_xit                         *qt.QAction
+	mnuExecute                          *qt.QAction
+	mnuDriverVersions                   *qt.QAction
+	mnuHelpAbout                        *qt.QAction
+	actionConnect                       *qt.QAction
+	actionRefresh                       *qt.QAction
+	actionAbout_Qt                      *qt.QAction
+	actionAddRow                        *qt.QAction
+	actionDelete_row                    *qt.QAction
+	actionApply_changes                 *qt.QAction
+	actionConnectionManager             *qt.QAction
+	actionCreate_Bolt_database_from_zip *qt.QAction
+}
+
+// NewMainWindowUi creates all Qt widget classes for MainWindow.
+func NewMainWindowUi() *MainWindowUi {
+	ui := &MainWindowUi{}
+	ui.MainWindow = qt.NewQMainWindow(nil)
+	MainWindow__objectName := qt.NewQAnyStringView3("MainWindow")
+	ui.MainWindow.SetObjectName(*MainWindow__objectName)
+	MainWindow__objectName.Delete() // setter copied value
+	ui.MainWindow.Resize(1280, 640)
+	icon0 := qt.NewQIcon()
+	icon0.AddFile4(":/assets/database_lightning.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.MainWindow.SetWindowIcon(icon0)
+	ui.actionE_xit = qt.NewQAction()
+	actionE_xit__objectName := qt.NewQAnyStringView3("actionE_xit")
+	ui.actionE_xit.SetObjectName(*actionE_xit__objectName)
+	actionE_xit__objectName.Delete() // setter copied value
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.mnuExecute = qt.NewQAction()
+	mnuExecute__objectName := qt.NewQAnyStringView3("mnuExecute")
+	ui.mnuExecute.SetObjectName(*mnuExecute__objectName)
+	mnuExecute__objectName.Delete() // setter copied value
+	icon1 := qt.NewQIcon()
+	icon1.AddFile4(":/assets/resultset_next.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.mnuExecute.SetIcon(icon1)
+	ui.mnuDriverVersions = qt.NewQAction()
+	mnuDriverVersions__objectName := qt.NewQAnyStringView3("mnuDriverVersions")
+	ui.mnuDriverVersions.SetObjectName(*mnuDriverVersions__objectName)
+	mnuDriverVersions__objectName.Delete() // setter copied value
+	ui.mnuHelpAbout = qt.NewQAction()
+	mnuHelpAbout__objectName := qt.NewQAnyStringView3("mnuHelpAbout")
+	ui.mnuHelpAbout.SetObjectName(*mnuHelpAbout__objectName)
+	mnuHelpAbout__objectName.Delete() // setter copied value
+	icon2 := qt.NewQIcon()
+	icon2.AddFile4(":/assets/help.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.mnuHelpAbout.SetIcon(icon2)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionConnect = qt.NewQAction()
+	actionConnect__objectName := qt.NewQAnyStringView3("actionConnect")
+	ui.actionConnect.SetObjectName(*actionConnect__objectName)
+	actionConnect__objectName.Delete() // setter copied value
+	icon3 := qt.NewQIcon()
+	icon3.AddFile4(":/assets/database_add.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionConnect.SetIcon(icon3)
+	ui.actionRefresh = qt.NewQAction()
+	actionRefresh__objectName := qt.NewQAnyStringView3("actionRefresh")
+	ui.actionRefresh.SetObjectName(*actionRefresh__objectName)
+	actionRefresh__objectName.Delete() // setter copied value
+	icon4 := qt.NewQIcon()
+	icon4.AddFile4(":/assets/arrow_refresh.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionRefresh.SetIcon(icon4)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionAbout_Qt = qt.NewQAction()
+	actionAbout_Qt__objectName := qt.NewQAnyStringView3("actionAbout_Qt")
+	ui.actionAbout_Qt.SetObjectName(*actionAbout_Qt__objectName)
+	actionAbout_Qt__objectName.Delete() // setter copied value
+	icon5 := qt.NewQIcon()
+	icon5.AddFile4(":/assets/vendor_qt.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionAbout_Qt.SetIcon(icon5)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionAddRow = qt.NewQAction()
+	actionAddRow__objectName := qt.NewQAnyStringView3("actionAddRow")
+	ui.actionAddRow.SetObjectName(*actionAddRow__objectName)
+	actionAddRow__objectName.Delete() // setter copied value
+	icon6 := qt.NewQIcon()
+	icon6.AddFile4(":/assets/add.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionAddRow.SetIcon(icon6)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionDelete_row = qt.NewQAction()
+	actionDelete_row__objectName := qt.NewQAnyStringView3("actionDelete_row")
+	ui.actionDelete_row.SetObjectName(*actionDelete_row__objectName)
+	actionDelete_row__objectName.Delete() // setter copied value
+	icon7 := qt.NewQIcon()
+	icon7.AddFile4(":/assets/delete.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionDelete_row.SetIcon(icon7)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionApply_changes = qt.NewQAction()
+	actionApply_changes__objectName := qt.NewQAnyStringView3("actionApply_changes")
+	ui.actionApply_changes.SetObjectName(*actionApply_changes__objectName)
+	actionApply_changes__objectName.Delete() // setter copied value
+	icon8 := qt.NewQIcon()
+	icon8.AddFile4(":/assets/pencil_go.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionApply_changes.SetIcon(icon8)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionConnectionManager = qt.NewQAction()
+	actionConnectionManager__objectName := qt.NewQAnyStringView3("actionConnectionManager")
+	ui.actionConnectionManager.SetObjectName(*actionConnectionManager__objectName)
+	actionConnectionManager__objectName.Delete() // setter copied value
+	icon9 := qt.NewQIcon()
+	icon9.AddFile4(":/assets/database_key.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionConnectionManager.SetIcon(icon9)
+	/* miqt-uic: no handler for QAction property 'menuRole' */
+	ui.actionCreate_Bolt_database_from_zip = qt.NewQAction()
+	actionCreate_Bolt_database_from_zip__objectName := qt.NewQAnyStringView3("actionCreate_Bolt_database_from_zip")
+	ui.actionCreate_Bolt_database_from_zip.SetObjectName(*actionCreate_Bolt_database_from_zip__objectName)
+	actionCreate_Bolt_database_from_zip__objectName.Delete() // setter copied value
+	icon10 := qt.NewQIcon()
+	icon10.AddFile4(":/assets/compress.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.actionCreate_Bolt_database_from_zip.SetIcon(icon10)
+	ui.centralwidget = qt.NewQWidget(ui.MainWindow.QWidget)
+	centralwidget__objectName := qt.NewQAnyStringView3("centralwidget")
+	ui.centralwidget.SetObjectName(*centralwidget__objectName)
+	centralwidget__objectName.Delete() // setter copied value
+	ui.gridLayout = qt.NewQGridLayout(ui.centralwidget)
+	gridLayout__objectName := qt.NewQAnyStringView3("gridLayout")
+	ui.gridLayout.SetObjectName(*gridLayout__objectName)
+	gridLayout__objectName.Delete() // setter copied value
+	ui.gridLayout.SetContentsMargins(11, 11, 11, 11)
+	ui.gridLayout.SetSpacing(6)
+	ui.splitter = qt.NewQSplitter(ui.centralwidget)
+	splitter__objectName := qt.NewQAnyStringView3("splitter")
+	ui.splitter.SetObjectName(*splitter__objectName)
+	splitter__objectName.Delete() // setter copied value
+	ui.splitter.SetOrientation(qt.Horizontal)
+	ui.splitter.SetChildrenCollapsible(false)
+	ui.Buckets = qt.NewQTreeWidget(ui.splitter.QWidget)
+	Buckets__objectName := qt.NewQAnyStringView3("Buckets")
+	ui.Buckets.SetObjectName(*Buckets__objectName)
+	Buckets__objectName.Delete() // setter copied value
+	ui.Buckets.SetUniformRowHeights(true)
+	ui.Buckets.SetHeaderHidden(true)
+	/* miqt-uic: no handler for Buckets attribute 'headerVisible' */
+	ui.Buckets.HeaderItem().SetText(0, "1")
+	ui.splitter.AddWidget(ui.Buckets.QWidget)
+	ui.tabWidget = qt.NewQTabWidget(ui.splitter.QWidget)
+	tabWidget__objectName := qt.NewQAnyStringView3("tabWidget")
+	ui.tabWidget.SetObjectName(*tabWidget__objectName)
+	tabWidget__objectName.Delete() // setter copied value
+	tabWidget__sizePolicy := qt.NewQSizePolicy()
+	tabWidget__sizePolicy.SetHorizontalPolicy(qt.QSizePolicy__Expanding)
+	tabWidget__sizePolicy.SetVerticalPolicy(qt.QSizePolicy__Expanding)
+	tabWidget__sizePolicy.SetHorizontalStretch(1)
+	tabWidget__sizePolicy.SetVerticalStretch(0)
+	tabWidget__sizePolicy.SetHeightForWidth(ui.tabWidget.SizePolicy().HasHeightForWidth())
+	ui.tabWidget.SetSizePolicy(*tabWidget__sizePolicy)
+	tabWidget__sizePolicy.Delete() // setter copies values
+	ui.tabProperties = qt.NewQWidget(ui.tabWidget.QWidget)
+	tabProperties__objectName := qt.NewQAnyStringView3("tabProperties")
+	ui.tabProperties.SetObjectName(*tabProperties__objectName)
+	tabProperties__objectName.Delete() // setter copied value
+	ui.gridLayout_2 = qt.NewQGridLayout(ui.tabProperties)
+	gridLayout_2__objectName := qt.NewQAnyStringView3("gridLayout_2")
+	ui.gridLayout_2.SetObjectName(*gridLayout_2__objectName)
+	gridLayout_2__objectName.Delete() // setter copied value
+	ui.gridLayout_2.SetContentsMargins(11, 11, 11, 11)
+	ui.gridLayout_2.SetSpacing(6)
+	ui.propertiesBox = qt.NewQTextEdit(ui.tabProperties)
+	propertiesBox__objectName := qt.NewQAnyStringView3("propertiesBox")
+	ui.propertiesBox.SetObjectName(*propertiesBox__objectName)
+	propertiesBox__objectName.Delete() // setter copied value
+	ui.propertiesBox.SetFrameShape(qt.QFrame__NoFrame)
+	ui.propertiesBox.SetReadOnly(true)
+
+	ui.gridLayout_2.AddWidget2(ui.propertiesBox.QWidget, 0, 0)
+	icon11 := qt.NewQIcon()
+	icon11.AddFile4(":/assets/chart_bar.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.tabWidget.AddTab2(ui.tabProperties, icon11, "")
+	ui.tabData = qt.NewQWidget(ui.tabWidget.QWidget)
+	tabData__objectName := qt.NewQAnyStringView3("tabData")
+	ui.tabData.SetObjectName(*tabData__objectName)
+	tabData__objectName.Delete() // setter copied value
+	ui.verticalLayout = qt.NewQVBoxLayout(ui.tabData)
+	verticalLayout__objectName := qt.NewQAnyStringView3("verticalLayout")
+	ui.verticalLayout.SetObjectName(*verticalLayout__objectName)
+	verticalLayout__objectName.Delete() // setter copied value
+	ui.verticalLayout.SetContentsMargins(11, 11, 11, 11)
+	ui.verticalLayout.SetSpacing(6)
+	ui.contentBox = qt.NewQTableView(ui.tabData)
+	contentBox__objectName := qt.NewQAnyStringView3("contentBox")
+	ui.contentBox.SetObjectName(*contentBox__objectName)
+	contentBox__objectName.Delete() // setter copied value
+	ui.contentBox.SetVerticalScrollMode(qt.QAbstractItemView__ScrollPerPixel)
+	ui.contentBox.SetHorizontalScrollMode(qt.QAbstractItemView__ScrollPerPixel)
+
+	ui.verticalLayout.AddWidget(ui.contentBox.QWidget)
+	icon12 := qt.NewQIcon()
+	icon12.AddFile4(":/assets/table.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.tabWidget.AddTab2(ui.tabData, icon12, "")
+	ui.tabQuery = qt.NewQWidget(ui.tabWidget.QWidget)
+	tabQuery__objectName := qt.NewQAnyStringView3("tabQuery")
+	ui.tabQuery.SetObjectName(*tabQuery__objectName)
+	tabQuery__objectName.Delete() // setter copied value
+	ui.verticalLayout_2 = qt.NewQVBoxLayout(ui.tabQuery)
+	verticalLayout_2__objectName := qt.NewQAnyStringView3("verticalLayout_2")
+	ui.verticalLayout_2.SetObjectName(*verticalLayout_2__objectName)
+	verticalLayout_2__objectName.Delete() // setter copied value
+	ui.verticalLayout_2.SetContentsMargins(11, 11, 11, 11)
+	ui.verticalLayout_2.SetSpacing(6)
+	ui.splitter_2 = qt.NewQSplitter(ui.tabQuery)
+	splitter_2__objectName := qt.NewQAnyStringView3("splitter_2")
+	ui.splitter_2.SetObjectName(*splitter_2__objectName)
+	splitter_2__objectName.Delete() // setter copied value
+	ui.splitter_2.SetOrientation(qt.Vertical)
+	ui.splitter_2.SetChildrenCollapsible(false)
+	ui.queryInput = qt.NewQPlainTextEdit(ui.splitter_2.QWidget)
+	queryInput__objectName := qt.NewQAnyStringView3("queryInput")
+	ui.queryInput.SetObjectName(*queryInput__objectName)
+	queryInput__objectName.Delete() // setter copied value
+	/* miqt-uic: no handler for queryInput property 'font' */
+	ui.splitter_2.AddWidget(ui.queryInput.QWidget)
+	ui.queryResult = qt.NewQTableView(ui.splitter_2.QWidget)
+	queryResult__objectName := qt.NewQAnyStringView3("queryResult")
+	ui.queryResult.SetObjectName(*queryResult__objectName)
+	queryResult__objectName.Delete() // setter copied value
+	ui.queryResult.SetVerticalScrollMode(qt.QAbstractItemView__ScrollPerPixel)
+	ui.queryResult.SetHorizontalScrollMode(qt.QAbstractItemView__ScrollPerPixel)
+	ui.splitter_2.AddWidget(ui.queryResult.QWidget)
+
+	ui.verticalLayout_2.AddWidget(ui.splitter_2.QWidget)
+	icon13 := qt.NewQIcon()
+	icon13.AddFile4(":/assets/lightning.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.tabWidget.AddTab2(ui.tabQuery, icon13, "")
+	ui.splitter.AddWidget(ui.tabWidget.QWidget)
+
+	ui.gridLayout.AddWidget2(ui.splitter.QWidget, 0, 0)
+	ui.MainWindow.SetCentralWidget(ui.centralwidget) // Set central widget
+	ui.menubar = qt.NewQMenuBar(ui.MainWindow.QWidget)
+	menubar__objectName := qt.NewQAnyStringView3("menubar")
+	ui.menubar.SetObjectName(*menubar__objectName)
+	menubar__objectName.Delete() // setter copied value
+	ui.menubar.Resize(1280, 29)
+	ui.menu_File = qt.NewQMenu(ui.menubar.QWidget)
+	menu_File__objectName := qt.NewQAnyStringView3("menu_File")
+	ui.menu_File.SetObjectName(*menu_File__objectName)
+	menu_File__objectName.Delete() // setter copied value
+	ui.menu_File.QWidget.AddAction(ui.actionConnectionManager)
+	ui.menu_File.QWidget.AddAction(ui.actionConnect)
+	ui.menu_File.AddSeparator()
+	ui.menu_File.QWidget.AddAction(ui.actionE_xit)
+	ui.menu_Query = qt.NewQMenu(ui.menubar.QWidget)
+	menu_Query__objectName := qt.NewQAnyStringView3("menu_Query")
+	ui.menu_Query.SetObjectName(*menu_Query__objectName)
+	menu_Query__objectName.Delete() // setter copied value
+	ui.menu_Query.QWidget.AddAction(ui.mnuExecute)
+	ui.menu_Help = qt.NewQMenu(ui.menubar.QWidget)
+	menu_Help__objectName := qt.NewQAnyStringView3("menu_Help")
+	ui.menu_Help.SetObjectName(*menu_Help__objectName)
+	menu_Help__objectName.Delete() // setter copied value
+	ui.menu_Help.QWidget.AddAction(ui.mnuDriverVersions)
+	ui.menu_Help.AddSeparator()
+	ui.menu_Help.QWidget.AddAction(ui.actionAbout_Qt)
+	ui.menu_Help.QWidget.AddAction(ui.mnuHelpAbout)
+	ui.menu_Data = qt.NewQMenu(ui.menubar.QWidget)
+	menu_Data__objectName := qt.NewQAnyStringView3("menu_Data")
+	ui.menu_Data.SetObjectName(*menu_Data__objectName)
+	menu_Data__objectName.Delete() // setter copied value
+	ui.menu_Data.QWidget.AddAction(ui.actionRefresh)
+	ui.menu_Data.AddSeparator()
+	ui.menu_Data.QWidget.AddAction(ui.actionAddRow)
+	ui.menu_Data.QWidget.AddAction(ui.actionDelete_row)
+	ui.menu_Data.QWidget.AddAction(ui.actionApply_changes)
+	ui.menu_Tools = qt.NewQMenu(ui.menubar.QWidget)
+	menu_Tools__objectName := qt.NewQAnyStringView3("menu_Tools")
+	ui.menu_Tools.SetObjectName(*menu_Tools__objectName)
+	menu_Tools__objectName.Delete() // setter copied value
+	ui.menu_Tools.QWidget.AddAction(ui.actionCreate_Bolt_database_from_zip)
+	ui.menubar.AddMenu(ui.menu_File)
+	ui.menubar.AddMenu(ui.menu_Data)
+	ui.menubar.AddMenu(ui.menu_Query)
+	ui.menubar.AddMenu(ui.menu_Tools)
+	ui.menubar.AddMenu(ui.menu_Help)
+	ui.MainWindow.SetMenuBar(ui.menubar)
+	ui.statusbar = qt.NewQStatusBar(ui.MainWindow.QWidget)
+	statusbar__objectName := qt.NewQAnyStringView3("statusbar")
+	ui.statusbar.SetObjectName(*statusbar__objectName)
+	statusbar__objectName.Delete() // setter copied value
+	ui.MainWindow.SetStatusBar(ui.statusbar)
+	ui.toolBar = qt.NewQToolBar(ui.MainWindow.QWidget)
+	toolBar__objectName := qt.NewQAnyStringView3("toolBar")
+	ui.toolBar.SetObjectName(*toolBar__objectName)
+	toolBar__objectName.Delete() // setter copied value
+	/* miqt-uic: no handler for toolBar property 'iconSize' */
+	ui.toolBar.SetToolButtonStyle(qt.ToolButtonIconOnly)
+	ui.MainWindow.AddToolBar(qt.TopToolBarArea, ui.toolBar)
+	/* miqt-uic: no handler for toolBar attribute 'toolBarBreak' */
+	ui.toolBar.QWidget.AddAction(ui.actionConnectionManager)
+	ui.toolBar.QWidget.AddAction(ui.actionConnect)
+	ui.toolBar.AddSeparator()
+	ui.toolBar.QWidget.AddAction(ui.actionRefresh)
+	ui.toolBar.QWidget.AddAction(ui.actionAddRow)
+	ui.toolBar.QWidget.AddAction(ui.actionDelete_row)
+	ui.toolBar.QWidget.AddAction(ui.actionApply_changes)
+	ui.toolBar.AddSeparator()
+	ui.toolBar.QWidget.AddAction(ui.mnuExecute)
+
+	ui.Retranslate()
+
+	ui.tabWidget.SetCurrentIndex(0)
+
+	return ui
+}
+
+// Retranslate reapplies all text translations.
+func (ui *MainWindowUi) Retranslate() {
+	ui.MainWindow.SetWindowTitle(qt.QCoreApplication_Tr("QBolt"))
+	ui.actionE_xit.SetText(qt.QMainWindow_Tr("E&xit"))
+	ui.mnuExecute.SetText(qt.QMainWindow_Tr("E&xecute"))
+	ui.mnuExecute.SetShortcut(qt.NewQKeySequence2(qt.QMainWindow_Tr("F9")))
+	ui.mnuDriverVersions.SetText(qt.QMainWindow_Tr("Driver versions..."))
+	ui.mnuHelpAbout.SetText(qt.QMainWindow_Tr("&About QBolt"))
+	ui.mnuHelpAbout.SetToolTip(qt.QMainWindow_Tr("About QBolt"))
+	ui.mnuHelpAbout.SetShortcut(qt.NewQKeySequence2(qt.QMainWindow_Tr("F1")))
+	ui.actionConnect.SetText(qt.QMainWindow_Tr("Connect..."))
+	ui.actionConnect.SetShortcut(qt.NewQKeySequence2(qt.QMainWindow_Tr("Ctrl+O")))
+	ui.actionRefresh.SetText(qt.QMainWindow_Tr("Refresh"))
+	ui.actionRefresh.SetShortcut(qt.NewQKeySequence2(qt.QMainWindow_Tr("F5")))
+	ui.actionAbout_Qt.SetText(qt.QMainWindow_Tr("About Qt"))
+	ui.actionAddRow.SetText(qt.QMainWindow_Tr("Add row"))
+	ui.actionAddRow.SetToolTip(qt.QMainWindow_Tr("Add row"))
+	ui.actionDelete_row.SetText(qt.QMainWindow_Tr("Delete row"))
+	ui.actionApply_changes.SetText(qt.QMainWindow_Tr("Apply changes"))
+	ui.actionConnectionManager.SetText(qt.QMainWindow_Tr("Connection Manager"))
+	ui.actionConnectionManager.SetToolTip(qt.QMainWindow_Tr("Connection Manager"))
+	ui.actionCreate_Bolt_database_from_zip.SetText(qt.QMainWindow_Tr("Create Bolt database from zip"))
+	ui.tabWidget.SetTabText(ui.tabWidget.IndexOf(ui.tabProperties), qt.QTabWidget_Tr("Properties"))
+	ui.tabWidget.SetTabText(ui.tabWidget.IndexOf(ui.tabData), qt.QTabWidget_Tr("Data"))
+	ui.tabWidget.SetTabText(ui.tabWidget.IndexOf(ui.tabQuery), qt.QTabWidget_Tr("Query"))
+	ui.menu_File.SetTitle(qt.QMenuBar_Tr("&File"))
+	ui.menu_Query.SetTitle(qt.QMenuBar_Tr("&Query"))
+	ui.menu_Help.SetTitle(qt.QMenuBar_Tr("&Help"))
+	ui.menu_Data.SetTitle(qt.QMenuBar_Tr("&Data"))
+	ui.menu_Tools.SetTitle(qt.QMenuBar_Tr("&Tools"))
+	ui.toolBar.SetWindowTitle(qt.QMainWindow_Tr("toolBar"))
+}

mainwindow.ui

@@ -0,0 +1,374 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>1280</width>
+    <height>640</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>QBolt</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="embed.qrc">
+    <normaloff>:/assets/database_lightning.png</normaloff>:/assets/database_lightning.png</iconset>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QGridLayout" name="gridLayout">
+    <item row="0" column="0">
+     <widget class="QSplitter" name="splitter">
+      <property name="orientation">
+       <enum>Qt::Orientation::Horizontal</enum>
+      </property>
+      <property name="childrenCollapsible">
+       <bool>false</bool>
+      </property>
+      <widget class="QTreeWidget" name="Buckets">
+       <property name="uniformRowHeights">
+        <bool>true</bool>
+       </property>
+       <property name="headerHidden">
+        <bool>true</bool>
+       </property>
+       <attribute name="headerVisible">
+        <bool>false</bool>
+       </attribute>
+       <column>
+        <property name="text">
+         <string notr="true">1</string>
+        </property>
+       </column>
+      </widget>
+      <widget class="QTabWidget" name="tabWidget">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+         <horstretch>1</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="currentIndex">
+        <number>0</number>
+       </property>
+       <widget class="QWidget" name="tabProperties">
+        <attribute name="icon">
+         <iconset resource="embed.qrc">
+          <normaloff>:/assets/chart_bar.png</normaloff>:/assets/chart_bar.png</iconset>
+        </attribute>
+        <attribute name="title">
+         <string>Properties</string>
+        </attribute>
+        <layout class="QGridLayout" name="gridLayout_2">
+         <item row="0" column="0">
+          <widget class="QTextEdit" name="propertiesBox">
+           <property name="frameShape">
+            <enum>QFrame::Shape::NoFrame</enum>
+           </property>
+           <property name="readOnly">
+            <bool>true</bool>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+       <widget class="QWidget" name="tabData">
+        <attribute name="icon">
+         <iconset resource="embed.qrc">
+          <normaloff>:/assets/table.png</normaloff>:/assets/table.png</iconset>
+        </attribute>
+        <attribute name="title">
+         <string>Data</string>
+        </attribute>
+        <layout class="QVBoxLayout" name="verticalLayout">
+         <item>
+          <widget class="QTableView" name="contentBox">
+           <property name="verticalScrollMode">
+            <enum>QAbstractItemView::ScrollMode::ScrollPerPixel</enum>
+           </property>
+           <property name="horizontalScrollMode">
+            <enum>QAbstractItemView::ScrollMode::ScrollPerPixel</enum>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+       <widget class="QWidget" name="tabQuery">
+        <attribute name="icon">
+         <iconset resource="embed.qrc">
+          <normaloff>:/assets/lightning.png</normaloff>:/assets/lightning.png</iconset>
+        </attribute>
+        <attribute name="title">
+         <string>Query</string>
+        </attribute>
+        <layout class="QVBoxLayout" name="verticalLayout_2">
+         <item>
+          <widget class="QSplitter" name="splitter_2">
+           <property name="orientation">
+            <enum>Qt::Orientation::Vertical</enum>
+           </property>
+           <property name="childrenCollapsible">
+            <bool>false</bool>
+           </property>
+           <widget class="QPlainTextEdit" name="queryInput">
+            <property name="font">
+             <font>
+              <family>Monospace</family>
+             </font>
+            </property>
+           </widget>
+           <widget class="QTableView" name="queryResult">
+            <property name="verticalScrollMode">
+             <enum>QAbstractItemView::ScrollMode::ScrollPerPixel</enum>
+            </property>
+            <property name="horizontalScrollMode">
+             <enum>QAbstractItemView::ScrollMode::ScrollPerPixel</enum>
+            </property>
+           </widget>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+      </widget>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>1280</width>
+     <height>29</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menu_File">
+    <property name="title">
+     <string>&amp;File</string>
+    </property>
+    <addaction name="actionConnectionManager"/>
+    <addaction name="actionConnect"/>
+    <addaction name="separator"/>
+    <addaction name="actionE_xit"/>
+   </widget>
+   <widget class="QMenu" name="menu_Query">
+    <property name="title">
+     <string>&amp;Query</string>
+    </property>
+    <addaction name="mnuExecute"/>
+   </widget>
+   <widget class="QMenu" name="menu_Help">
+    <property name="title">
+     <string>&amp;Help</string>
+    </property>
+    <addaction name="mnuDriverVersions"/>
+    <addaction name="separator"/>
+    <addaction name="actionAbout_Qt"/>
+    <addaction name="mnuHelpAbout"/>
+   </widget>
+   <widget class="QMenu" name="menu_Data">
+    <property name="title">
+     <string>&amp;Data</string>
+    </property>
+    <addaction name="actionRefresh"/>
+    <addaction name="separator"/>
+    <addaction name="actionAddRow"/>
+    <addaction name="actionDelete_row"/>
+    <addaction name="actionApply_changes"/>
+   </widget>
+   <widget class="QMenu" name="menu_Tools">
+    <property name="title">
+     <string>&amp;Tools</string>
+    </property>
+    <addaction name="actionCreate_Bolt_database_from_zip"/>
+   </widget>
+   <addaction name="menu_File"/>
+   <addaction name="menu_Data"/>
+   <addaction name="menu_Query"/>
+   <addaction name="menu_Tools"/>
+   <addaction name="menu_Help"/>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+  <widget class="QToolBar" name="toolBar">
+   <property name="windowTitle">
+    <string>toolBar</string>
+   </property>
+   <property name="iconSize">
+    <size>
+     <width>16</width>
+     <height>16</height>
+    </size>
+   </property>
+   <property name="toolButtonStyle">
+    <enum>Qt::ToolButtonStyle::ToolButtonIconOnly</enum>
+   </property>
+   <attribute name="toolBarArea">
+    <enum>TopToolBarArea</enum>
+   </attribute>
+   <attribute name="toolBarBreak">
+    <bool>false</bool>
+   </attribute>
+   <addaction name="actionConnectionManager"/>
+   <addaction name="actionConnect"/>
+   <addaction name="separator"/>
+   <addaction name="actionRefresh"/>
+   <addaction name="actionAddRow"/>
+   <addaction name="actionDelete_row"/>
+   <addaction name="actionApply_changes"/>
+   <addaction name="separator"/>
+   <addaction name="mnuExecute"/>
+  </widget>
+  <action name="actionE_xit">
+   <property name="text">
+    <string>E&amp;xit</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::QuitRole</enum>
+   </property>
+  </action>
+  <action name="mnuExecute">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/resultset_next.png</normaloff>:/assets/resultset_next.png</iconset>
+   </property>
+   <property name="text">
+    <string>E&amp;xecute</string>
+   </property>
+   <property name="shortcut">
+    <string>F9</string>
+   </property>
+  </action>
+  <action name="mnuDriverVersions">
+   <property name="text">
+    <string>Driver versions...</string>
+   </property>
+  </action>
+  <action name="mnuHelpAbout">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/help.png</normaloff>:/assets/help.png</iconset>
+   </property>
+   <property name="text">
+    <string>&amp;About QBolt</string>
+   </property>
+   <property name="toolTip">
+    <string>About QBolt</string>
+   </property>
+   <property name="shortcut">
+    <string>F1</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::AboutRole</enum>
+   </property>
+  </action>
+  <action name="actionConnect">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/database_add.png</normaloff>:/assets/database_add.png</iconset>
+   </property>
+   <property name="text">
+    <string>Connect...</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+O</string>
+   </property>
+  </action>
+  <action name="actionRefresh">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/arrow_refresh.png</normaloff>:/assets/arrow_refresh.png</iconset>
+   </property>
+   <property name="text">
+    <string>Refresh</string>
+   </property>
+   <property name="shortcut">
+    <string>F5</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::NoRole</enum>
+   </property>
+  </action>
+  <action name="actionAbout_Qt">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/vendor_qt.png</normaloff>:/assets/vendor_qt.png</iconset>
+   </property>
+   <property name="text">
+    <string>About Qt</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::AboutQtRole</enum>
+   </property>
+  </action>
+  <action name="actionAddRow">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/add.png</normaloff>:/assets/add.png</iconset>
+   </property>
+   <property name="text">
+    <string>Add row</string>
+   </property>
+   <property name="toolTip">
+    <string>Add row</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::NoRole</enum>
+   </property>
+  </action>
+  <action name="actionDelete_row">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/delete.png</normaloff>:/assets/delete.png</iconset>
+   </property>
+   <property name="text">
+    <string>Delete row</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::NoRole</enum>
+   </property>
+  </action>
+  <action name="actionApply_changes">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/pencil_go.png</normaloff>:/assets/pencil_go.png</iconset>
+   </property>
+   <property name="text">
+    <string>Apply changes</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::NoRole</enum>
+   </property>
+  </action>
+  <action name="actionConnectionManager">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/database_key.png</normaloff>:/assets/database_key.png</iconset>
+   </property>
+   <property name="text">
+    <string>Connection Manager</string>
+   </property>
+   <property name="toolTip">
+    <string>Connection Manager</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::MenuRole::NoRole</enum>
+   </property>
+  </action>
+  <action name="actionCreate_Bolt_database_from_zip">
+   <property name="icon">
+    <iconset resource="embed.qrc">
+     <normaloff>:/assets/compress.png</normaloff>:/assets/compress.png</iconset>
+   </property>
+   <property name="text">
+    <string>Create Bolt database from zip</string>
+   </property>
+  </action>
+ </widget>
+ <resources>
+  <include location="embed.qrc"/>
+ </resources>
+ <connections/>
+</ui>

platform_windows.go

@@ -1,5 +0,0 @@
-package main
-
-import (
-	_ "github.com/ying32/govcl/pkgs/winappres" // Extra _syso files for Windows
-)

redisConnectionDialog.go

@@ -1,130 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	"github.com/redis/go-redis/v9"
-	"github.com/ying32/govcl/vcl"
-	"github.com/ying32/govcl/vcl/types"
-)
-
-type TRedisConnectionDialogResult = *redis.Options
-
-type TRedisConnectionDialog struct {
-	*vcl.TForm
-
-	Address         *vcl.TEdit
-	Port            *vcl.TSpinEdit
-	Password        *vcl.TEdit
-	IsResp3Protocol *vcl.TCheckBox
-	ConnectBtn      *vcl.TButton
-
-	// CustomReturn must be set by the caller to a *redis.Options variable.
-	CustomReturn *TRedisConnectionDialogResult // nil = no CustomReturn/cancelled dialog
-}
-
-func (f *TRedisConnectionDialog) OnFormCreate(sender vcl.IObject) {
-
-	f.SetCaption("Connect to Redis...")
-	f.SetWidth(320)
-	f.SetHeight(160)
-	f.SetPosition(types.PoOwnerFormCenter)
-
-	// row 1
-
-	row1 := vcl_row(f, 1)
-
-	lblAddress := vcl.NewLabel(row1)
-	lblAddress.SetParent(row1)
-	lblAddress.SetCaption("Address:")
-	lblAddress.SetAlign(types.AlLeft)
-	lblAddress.SetLayout(types.TlCenter)
-	lblAddress.SetLeft(1)
-	lblAddress.BorderSpacing().SetAround(MY_SPACING)
-
-	f.Address = vcl.NewEdit(row1)
-	f.Address.SetParent(row1)
-	f.Address.SetAlign(types.AlClient) // grow AlLeft)
-	f.Address.SetWidth(MY_WIDTH)
-	f.Address.SetLeft(2)
-	f.Address.SetText("127.0.0.1")
-	f.Address.BorderSpacing().SetAround(MY_SPACING)
-
-	lblPort := vcl.NewLabel(row1)
-	lblPort.SetParent(row1)
-	lblPort.SetCaption(":")
-	lblPort.SetAlign(types.AlRight)
-	lblPort.SetLayout(types.TlCenter)
-	lblPort.SetLeft(0)
-	lblPort.SetAutoSize(true)
-	lblPort.BorderSpacing().SetAround(MY_SPACING)
-
-	f.Port = vcl.NewSpinEdit(row1)
-	f.Port.SetParent(row1)
-	f.Port.SetMinValue(1)
-	f.Port.SetMaxValue(65535)
-	f.Port.SetValue(6379) // Redis default port
-	f.Port.SetAlign(types.AlRight)
-	f.Port.SetLeft(1000)
-	f.Port.BorderSpacing().SetAround(MY_SPACING)
-
-	// row 2
-
-	row2 := vcl_row(f, 2)
-
-	lblPassword := vcl.NewLabel(row2)
-	lblPassword.SetParent(row2)
-	lblPassword.SetCaption("Password:")
-	lblPassword.SetAlign(types.AlLeft)
-	lblPassword.SetLayout(types.TlCenter)
-	lblPassword.SetLeft(1)
-	lblPassword.BorderSpacing().SetAround(MY_SPACING)
-
-	f.Password = vcl.NewEdit(row2)
-	f.Password.SetParent(row2)
-	f.Password.SetAlign(types.AlClient) // grow
-	f.Password.SetLeft(2)
-	f.Password.SetWidth(MY_WIDTH)
-	f.Password.SetPasswordChar(uint16('*'))
-	f.Password.BorderSpacing().SetAround(MY_SPACING)
-
-	// row 3
-
-	f.IsResp3Protocol = vcl.NewCheckBox(f)
-	f.IsResp3Protocol.SetParent(f)
-	f.IsResp3Protocol.SetCaption("Use RESP v3 protocol")
-	f.IsResp3Protocol.SetChecked(true)
-	f.IsResp3Protocol.SetAlign(types.AlTop)
-	f.IsResp3Protocol.SetTop(3)
-	f.IsResp3Protocol.BorderSpacing().SetAround(MY_SPACING)
-
-	// buttons
-
-	row4 := vcl_row(f, 4)
-	row4.SetAlign(types.AlBottom)
-
-	f.ConnectBtn = vcl.NewButton(row4)
-	f.ConnectBtn.SetParent(row4)
-	f.ConnectBtn.SetAlign(types.AlRight)
-	f.ConnectBtn.SetCaption("Connect")
-	f.ConnectBtn.SetOnClick(f.OnConnectBtnClick)
-}
-
-func (f *TRedisConnectionDialog) OnConnectBtnClick(sender vcl.IObject) {
-
-	ret := &redis.Options{
-		Addr:     fmt.Sprintf("%s:%d", f.Address.Text(), f.Port.Value()),
-		Password: f.Password.Text(),
-		DB:       0, // Start off with default DB, but, we will browse them ourselves
-		Protocol: 2, // RESP2
-	}
-
-	if f.IsResp3Protocol.Checked() {
-		ret.Protocol = 3 // RESP3
-	}
-
-	// Success.
-	// Fill in target pointer and close dialog with "MrOk" sentinel
-	*f.CustomReturn = ret
-	f.SetModalResult(types.MrOk)
-}

sqliteclidriver/event.go

@@ -0,0 +1,94 @@
+package sqliteclidriver
+
+import (
+	"io"
+	"sync"
+)
+
+const (
+	evtypeStdout int = iota
+	evtypeStderr
+	evtypeExit
+)
+
+type processEvent struct {
+	evtype int
+	data   []byte
+	err    error
+}
+
+func (pe processEvent) Error() string {
+	if pe.err != nil {
+		return pe.err.Error()
+	}
+
+	if pe.evtype == evtypeStderr {
+		return string(pe.data)
+	}
+
+	return "<no error>"
+}
+
+func (pe processEvent) Unwrap() error {
+	return pe.err
+}
+
+//
+
+func handleEvents(pw io.WriteCloser, pr, pe io.Reader, waiter func() error) (<-chan processEvent, io.WriteCloser, error) {
+
+	chEvents := make(chan processEvent, 0)
+
+	var wg sync.WaitGroup
+
+	go func() {
+		defer wg.Done()
+		processEventWorker(pr, evtypeStdout, chEvents)
+	}()
+
+	go func() {
+		defer wg.Done()
+		processEventWorker(pe, evtypeStderr, chEvents)
+	}()
+	wg.Add(2)
+
+	go func() {
+		// Only call cmd.Wait() after pipes are closed
+		wg.Wait()
+
+		err := waiter()
+		chEvents <- processEvent{
+			evtype: evtypeExit,
+			err:    err,
+		}
+
+		close(chEvents)
+	}()
+
+	return chEvents, pw, nil
+}
+
+func processEventWorker(p io.Reader, evtype int, dest chan<- processEvent) {
+	for {
+		buf := make([]byte, 1024)
+		n, err := p.Read(buf)
+
+		if n > 0 {
+			dest <- processEvent{
+				evtype: evtype,
+				data:   buf[0:n],
+			}
+		}
+
+		if err != nil {
+			dest <- processEvent{
+				evtype: evtype,
+				err:    err,
+			}
+
+			// Assume all errors are permanent
+			// Ordering can produce either io.EOF, ErrClosedPipe, or PathError{"file already closed"}
+			return
+		}
+	}
+}

sqliteclidriver/eventcmd.go

@@ -3,40 +3,15 @@ package sqliteclidriver
 import (
 	"io"
 	"os/exec"
-	"sync"
 )
 
-const (
-	evtypeStdout int = iota
-	evtypeStderr
-	evtypeExit
-)
-
-type processEvent struct {
-	evtype int
-	data   []byte
-	err    error
+func LocalBinEvents(databasePath string) (<-chan processEvent, io.WriteCloser, error) {
+	// TODO find a way to strictly separate parameters and paths (`--` is not supported here)
+	cmd := exec.Command(`/usr/bin/sqlite3`, `-noheader`, `-json`, databasePath)
+	return execEvents(cmd)
 }
 
-func (pe processEvent) Error() string {
-	if pe.err != nil {
-		return pe.err.Error()
-	}
-
-	if pe.evtype == evtypeStderr {
-		return string(pe.data)
-	}
-
-	return "<no error>"
-}
-
-func (pe processEvent) Unwrap() error {
-	return pe.err
-}
-
-//
-
-func ExecEvents(cmd *exec.Cmd) (<-chan processEvent, io.WriteCloser, error) {
+func execEvents(cmd *exec.Cmd) (<-chan processEvent, io.WriteCloser, error) {
 
 	pw, err := cmd.StdinPipe()
 	if err != nil {
@@ -58,58 +33,5 @@ func ExecEvents(cmd *exec.Cmd) (<-chan processEvent, io.WriteCloser, error) {
 		return nil, nil, err
 	}
 
-	chEvents := make(chan processEvent, 0)
-
-	var wg sync.WaitGroup
-
-	go func() {
-		defer wg.Done()
-		processEventWorker(pr, evtypeStdout, chEvents)
-	}()
-
-	go func() {
-		defer wg.Done()
-		processEventWorker(pe, evtypeStderr, chEvents)
-	}()
-	wg.Add(2)
-
-	go func() {
-		// Only call cmd.Wait() after pipes are closed
-		wg.Wait()
-
-		err = cmd.Wait()
-		chEvents <- processEvent{
-			evtype: evtypeExit,
-			err:    err,
-		}
-
-		close(chEvents)
-	}()
-
-	return chEvents, pw, nil
-}
-
-func processEventWorker(p io.Reader, evtype int, dest chan<- processEvent) {
-	for {
-		buf := make([]byte, 1024)
-		n, err := p.Read(buf)
-
-		if n > 0 {
-			dest <- processEvent{
-				evtype: evtype,
-				data:   buf[0:n],
-			}
-		}
-
-		if err != nil {
-			dest <- processEvent{
-				evtype: evtype,
-				err:    err,
-			}
-
-			// Assume all errors are permanent
-			// Ordering can produce either io.EOF, ErrClosedPipe, or PathError{"file already closed"}
-			return
-		}
-	}
+	return handleEvents(pw, pr, pe, cmd.Wait)
 }

sqliteclidriver/eventcmd_test.go

@@ -13,7 +13,7 @@ import (
 func TestEventCmd(t *testing.T) {
 	cmd := exec.Command("/bin/bash", "-c", `echo "hello world"`)
 
-	ch, _, err := ExecEvents(cmd)
+	ch, _, err := execEvents(cmd)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -36,7 +36,7 @@ func TestEventCmd(t *testing.T) {
 func TestEventCmdStdin(t *testing.T) {
 	cmd := exec.Command("/usr/bin/tr", "a-z", "A-Z")
 
-	ch, pw, err := ExecEvents(cmd)
+	ch, pw, err := execEvents(cmd)
 	if err != nil {
 		t.Fatal(err)
 	}

sqliteclidriver/eventssh.go

@@ -0,0 +1,94 @@
+package sqliteclidriver
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"fmt"
+	"io"
+	"strconv"
+
+	"golang.org/x/crypto/ssh"
+)
+
+func SSHEvents(cl *ssh.Client, databasePath string) (<-chan processEvent, io.WriteCloser, error) {
+	// Client must have already been Dial()'ed
+
+	ses, err := cl.NewSession()
+	if err != nil {
+		return nil, nil, fmt.Errorf("NewSession: %w", err)
+	}
+
+	pw, err := ses.StdinPipe()
+	if err != nil {
+		return nil, nil, fmt.Errorf("StdinPipe: %w", err)
+	}
+
+	pr, err := ses.StdoutPipe()
+	if err != nil {
+		return nil, nil, fmt.Errorf("StdoutPipe: %w", err)
+	}
+
+	pe, err := ses.StderrPipe()
+	if err != nil {
+		return nil, nil, fmt.Errorf("StderrPipe: %w", err)
+	}
+
+	// FIXME use accurate Bash escaping
+	// TODO find a way to strictly separate parameters and paths (`--` is not supported here)
+	ses.Start(`/usr/bin/sqlite3 -noheader -json "` + strconv.Quote(databasePath) + `"`)
+
+	return handleEvents(pw, pr, pe, ses.Wait)
+}
+
+//
+
+type sshDriver struct {
+	cl *ssh.Client
+}
+
+func (d *sshDriver) Open(connectionString string) (driver.Conn, error) {
+	// TODO support custom binpath from our connection string
+	chEvents, pw, err := SSHEvents(d.cl, connectionString)
+	if err != nil {
+		return nil, err
+	}
+
+	return &SCConn{
+		listen: chEvents,
+		w:      pw,
+	}, nil
+}
+
+var _ driver.Driver = &sshDriver{} // interface assertion
+
+//
+
+type sshConnector struct {
+	connectionString string
+	driver           *sshDriver
+}
+
+func (c *sshConnector) Connect(context.Context) (driver.Conn, error) {
+	// FIXME support context
+	return c.driver.Open(c.connectionString)
+}
+
+func (c *sshConnector) Driver() driver.Driver {
+	return c.driver
+}
+
+var _ driver.Connector = &sshConnector{} // interface assertion
+
+//
+
+// OpenSSH opens an sql.DB connection over SSH using the supplied ssh.Client
+// object.
+func OpenSSH(cl *ssh.Client, databasePath string) *sql.DB {
+	return sql.OpenDB(&sshConnector{
+		connectionString: databasePath,
+		driver: &sshDriver{
+			cl: cl,
+		},
+	})
+}

sqliteclidriver/sqliteclidriver.go

@@ -21,25 +21,25 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"os/exec"
 
-	"yvbolt/lexer"
+	"qbolt/lexer"
 
 	"github.com/google/uuid"
 )
 
+const DriverName = `sqliteclidriver`
+
 var ErrNotSupported = errors.New("Not supported")
 
 //
 
+// SCDriver is a thing that can open connections to the database for a given
+// connection string. It has no particular state.
 type SCDriver struct{}
 
 func (d *SCDriver) Open(connectionString string) (driver.Conn, error) {
 	// TODO support custom binpath from our connection string
-
-	cmd := exec.Command(`/usr/bin/sqlite3`, `-noheader`, `-json`, connectionString) // n.b. doesn't support `--`
-
-	chEvents, pw, err := ExecEvents(cmd)
+	chEvents, pw, err := LocalBinEvents(connectionString)
 	if err != nil {
 		return nil, err
 	}
@@ -53,17 +53,21 @@ func (d *SCDriver) Open(connectionString string) (driver.Conn, error) {
 var _ driver.Driver = &SCDriver{} // interface assertion
 
 func init() {
-	sql.Register("sqliteclidriver", &SCDriver{})
+	sql.Register(DriverName, &SCDriver{})
 }
 
 //
 
+// SCConnector is a container holding a driver and connection string together.
+// It is the result of parsing a sql.Open(driverName, connectionString) call
+// and has not parsed anything.
 type SCConnector struct {
 	connectionString string
 	driver           *SCDriver
 }
 
 func (c *SCConnector) Connect(context.Context) (driver.Conn, error) {
+	// FIXME support context
 	return c.driver.Open(c.connectionString)
 }
 
@@ -75,6 +79,7 @@ var _ driver.Connector = &SCConnector{} // interface assertion
 
 //
 
+// SCConn represents a single, active, open, connection to the database.
 type SCConn struct {
 	listen <-chan processEvent
 	w      io.WriteCloser
@@ -136,7 +141,7 @@ func (s *SCStmt) buildQuery(args []driver.Value) ([]byte, error) {
 
 	// Embed query params
 	// WARNING: Not secure against injection? That's not a security boundary
-	// for the purposes of yvbolt, but maybe for other package users
+	// for the purposes of qbolt, but maybe for other package users
 
 	var querybuilder bytes.Buffer
 

sshTunnel.go

@@ -0,0 +1,156 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"golang.org/x/crypto/ssh"
+	"golang.org/x/crypto/ssh/knownhosts"
+)
+
+type SSHTunnel struct {
+	Server   autoconfig.AddressPort
+	Username string
+	H1       autoconfig.Header `ylabel:"Authentication:" json:",omitempty"`
+	Auth     struct {
+		Type     autoconfig.OneOf
+		Password *struct {
+			Password autoconfig.Password
+		} `yicon:":/assets/key.png" json:",omitempty"`
+		PrivateKeyExternal *struct {
+			PrivateKeyFile         autoconfig.ExistingFile `ylabel:"Private Key"`
+			PrivateKeyFilePassword autoconfig.Password     `ylabel:"Password (optional)"`
+		} `ylabel:"Private key (External)" yicon:":/assets/page_key.png" json:",omitempty"`
+		PrivateKeyInternal *struct {
+			PrivateKeyContent         autoconfig.MultiLineString `ylabel:"Private Key"`
+			PrivateKeyContentPassword autoconfig.Password        `ylabel:"Password (optional)"`
+		} `ylabel:"Private key (Internal)" yicon:":/assets/page_key.png" json:",omitempty"`
+		SSHAgent *sshAgentConn `ylabel:"SSH Agent" yicon:":/assets/vendor_ssh.png" json:",omitempty"`
+	}
+	H2               autoconfig.Header `ylabel:"Server host key:" json:",omitempty"`
+	HostVerification struct {
+		Type                   autoconfig.OneOf
+		InsecureSkipVerify     *struct{} `json:",omitempty"`
+		ExternalKnownHostsFile *struct {
+			Path autoconfig.ExistingFile
+		} `json:",omitempty"`
+	}
+}
+
+func (s *SSHTunnel) Reset() { // Used by autoconfig package when creating a new value
+	s.Server.Port = 22
+
+	if sshAuthSock := os.Getenv("SSH_AUTH_SOCK"); sshAuthSock != "" {
+		s.Auth.Type = "SSHAgent"
+		s.Auth.SSHAgent = &sshAgentConn{}
+		s.Auth.SSHAgent.Reset()
+	}
+
+	if homeDir, err := os.UserHomeDir(); err == nil {
+		defaultKnownHostsFile := filepath.Join(homeDir, `.ssh`, `known_hosts`)
+		if _, err := os.Stat(defaultKnownHostsFile); err == nil {
+			s.HostVerification.Type = "ExternalKnownHostsFile"
+			alloc_inplace(&s.HostVerification.ExternalKnownHostsFile)
+			s.HostVerification.ExternalKnownHostsFile.Path = autoconfig.ExistingFile(defaultKnownHostsFile)
+		}
+	}
+
+	if s.HostVerification.Type == "" {
+		s.HostVerification.Type = "InsecureSkipVerify"
+		alloc_inplace(&s.HostVerification.InsecureSkipVerify)
+	}
+}
+
+func (s *SSHTunnel) String() string {
+	return fmt.Sprintf("ssh://%s@%s:%d", s.Username, s.Server.Address, s.Server.Port)
+}
+
+func parseMaybePasswordedKey(key, passphrase []byte) (ssh.Signer, error) {
+	if len(passphrase) == 0 {
+		return ssh.ParsePrivateKey(key)
+	}
+	return ssh.ParsePrivateKeyWithPassphrase(key, passphrase)
+}
+
+func (s SSHTunnel) Open(ctx context.Context) (*ssh.Client, error) {
+	cfg := ssh.ClientConfig{
+		BannerCallback: func(message string) error {
+			resp := qt.QMessageBox_Information7(nil, APPNAME, message, qt.QMessageBox__Ok, qt.QMessageBox__Cancel)
+			if resp != qt.QMessageBox__Ok {
+				return errors.New("SSH connection was cancelled")
+			}
+
+			return nil
+		},
+		User: s.Username,
+	}
+
+	if s.Auth.Password != nil {
+		cfg.Auth = append(cfg.Auth, ssh.Password(string(s.Auth.Password.Password)))
+
+	} else if s.Auth.PrivateKeyInternal != nil {
+
+		signer, err := parseMaybePasswordedKey(
+			[]byte(s.Auth.PrivateKeyInternal.PrivateKeyContent),
+			[]byte(s.Auth.PrivateKeyInternal.PrivateKeyContentPassword),
+		)
+		if err != nil {
+			return nil, fmt.Errorf("Parsing private key: %w", err)
+		}
+		cfg.Auth = append(cfg.Auth, ssh.PublicKeys(signer))
+
+	} else if s.Auth.PrivateKeyExternal != nil {
+
+		keyBytes, err := os.ReadFile(string(s.Auth.PrivateKeyExternal.PrivateKeyFile))
+		if err != nil {
+			return nil, fmt.Errorf("Loading private key: %w", err)
+		}
+
+		signer, err := parseMaybePasswordedKey(keyBytes, []byte(s.Auth.PrivateKeyExternal.PrivateKeyFilePassword))
+		if err != nil {
+			return nil, fmt.Errorf("Parsing private key: %w", err)
+		}
+		cfg.Auth = append(cfg.Auth, ssh.PublicKeys(signer))
+
+	} else if s.Auth.SSHAgent != nil {
+		sa, err := s.Auth.SSHAgent.getAgent()
+		if err != nil {
+			return nil, fmt.Errorf("Connecting to SSH agent: %w", err)
+		}
+
+		cfg.Auth = append(cfg.Auth, ssh.PublicKeysCallback(sa.Signers))
+
+	} else {
+		return nil, fmt.Errorf("Unsupported value %q for Auth", s.Auth.Type)
+
+	}
+
+	//
+
+	if s.HostVerification.Type == "" || s.HostVerification.InsecureSkipVerify != nil {
+		cfg.HostKeyCallback = ssh.InsecureIgnoreHostKey()
+
+	} else if s.HostVerification.ExternalKnownHostsFile != nil {
+		cb, err := knownhosts.New(string(s.HostVerification.ExternalKnownHostsFile.Path))
+		if err != nil {
+			return nil, fmt.Errorf("Parsing known_hosts file %q: %w")
+		}
+
+		cfg.HostKeyCallback = cb
+
+	} else {
+		return nil, fmt.Errorf("Unsupported value %q for HostVerification", s.HostVerification.Type)
+
+	}
+
+	//
+
+	// TODO DialContext
+	// Use wrapper from https://github.com/golang/go/issues/20288
+	return ssh.Dial("tcp", fmt.Sprintf("%s:%d", s.Server.Address, s.Server.Port), &cfg)
+}