doc/README: changelog for v0.9.0

Makefile

@@ -1,36 +1,45 @@
 SHELL:=/bin/bash
-
 SOURCES=$(find . -name '*.go' -type f)
+.DEFAULT_GOAL := dist
 
-liblcl-2.2.3.zip:
-	wget 'https://github.com/ying32/govcl/releases/download/v2.2.3/liblcl-2.2.3.zip'
+.PHONY: generate
+generate:
+	~/go/bin/miqt-uic -InFile mainwindow.ui -OutFile mainwindow.go -Qt6
+	~/go/bin/miqt-uic -InFile connectionDialog.ui -OutFile connectionDialog.go -Qt6
+	~/go/bin/miqt-uic -InFile connectionManagerDialog.ui -OutFile connectionManagerDialog.go -Qt6
+	~/go/bin/miqt-rcc -Input embed.qrc -Qt6
 	
-liblcl.so: liblcl-2.2.3.zip
-	echo "154b4e4a1d5137a2ffe51cb4d0bf152dd997c12616ae30862775c0e4f0928e88 liblcl-2.2.3.zip" | sha256sum -c
-	unzip -j liblcl-2.2.3.zip linux64-gtk2/liblcl.so -d .
-	touch liblcl.so
+.PHONY: designer
+designer:
+	/usr/lib/qt6/bin/designer &
 
-liblcl.dll: liblcl-2.2.3.zip
-	echo "154b4e4a1d5137a2ffe51cb4d0bf152dd997c12616ae30862775c0e4f0928e88 liblcl-2.2.3.zip" | sha256sum -c
-	unzip -j liblcl-2.2.3.zip win64/liblcl.dll -d .
-	touch liblcl.dll
+.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
 
 yvbolt: $(SOURCES)
-	GOOS=linux GOARCH=amd64 CGO_ENABLED=1 go build -trimpath -ldflags '-s -w'
+	# Target a debian-12 baseline build
+	~/go/bin/miqt-docker linux64-go1.25-qt6.4-dynamic -minify-build
 	chmod 755 yvbolt
-	upx --best yvbolt
+	upx --lzma yvbolt
 
 yvbolt.exe: $(SOURCES)
-	GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc-win32 go build -trimpath -ldflags '-s -w'
-	upx --best yvbolt.exe
+	~/go/bin/miqt-docker win64-cross-go1.24-qt6.5-static -windows-build --tags=windowsqtstatic
+	upx --lzma yvbolt.exe
 
-yvbolt.linux64.tar.xz: yvbolt liblcl.so
+yvbolt.apk: $(SOURCES)
+	~/go/bin/miqt-docker android-armv8a-go1.23-qt6.6-dynamic -android-build
+	
+yvbolt.linux64.tar.xz: yvbolt
 	rm -f yvbolt.linux64.tar.xz
-	XZ_OPT='--best' tar caf yvbolt.linux64.tar.xz --owner=0 --group=0 yvbolt liblcl.so
+	XZ_OPT='-T0 -9' tar caf yvbolt.linux64.tar.xz --owner=0 --group=0 yvbolt
 	
-yvbolt.win64.zip: yvbolt.exe liblcl.dll
+yvbolt.win64.zip: yvbolt.exe
 	rm -f yvbolt.win64.zip
-	zip -9 yvbolt.win64.zip yvbolt.exe liblcl.dll
+	zip -9 yvbolt.win64.zip yvbolt.exe
 
 .PHONY: dist
 dist: yvbolt.linux64.tar.xz yvbolt.win64.zip
@@ -38,7 +47,3 @@ dist: yvbolt.linux64.tar.xz yvbolt.win64.zip
 .PHONY: clean
 clean:
 	rm -f yvbolt.exe yvbolt yvbolt.linux64.tar.xz yvbolt.win64.zip
-
-.PHONY: clean-all
-clean-all: clean
-	rm -f liblcl-2.2.3.zip liblcl.so liblcl.dll

README.md

@@ -1,45 +1,122 @@
 # yvbolt
 
-A graphical browser for multiple databases using [GoVCL](https://z-kit.cc/en/).
-
-This is an experimental application and you should generally prefer to use [qbolt](https://code.ivysaur.me/qbolt).
+A graphical interface for multiple databases.
 
 ## Features
 
-- Native desktop application, running on Linux, Windows, and macOS
-- Connect to multiple databases
+- 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
 - 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
-  - Pebble
-  - Redis
-  - SQLite
-    - Drivers: mattn (CGo), modernc.org (no cgo), experimental command-line driver
+- Connection Manager saves connections with AEAD AES256-GCM using OS keychain
+
+See also [qbolt](https://code.ivysaur.me/qbolt) for more/different functionality.
+
+## Supported databases
+
+There are currently 10 supported databases:
+
+Database     |Read  |Editing  |Connection options  |Context menu actions
+-------------|------|---------|--------------------|--------
+Badger v4    |Yes   |No       |Encrypted, readonly, in-memory |Backup, restore, compact
+Bolt         |Yes   |Yes      |Readonly            |Create/delete child buckets
+Debconf      |Yes   |No       |                    |
+Freedesktop.org Secret Service |Yes |No |          |Unlock, create new collection
+LevelDB      |Yes   |No       |Readonly            |
+LMDB         |Yes   |Yes      |Multi-DB, readonly  |Create/delete child databases
+Pebble       |Yes   |No       |Readonly, in-memory |
+Redis        |Yes   |No       |SSH tunnel, RESP v3 |
+SQLite       |Yes   |Yes      |CLI driver, in-memory |Vacuum, export
+Starskey     |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 includes trademarked logo images for each supported database type.
-
-## Usage
-
-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
+- 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.
 
 ## Changelog
 
+2025-12-02 v0.9.0
+
+- 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 for Windows x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.9.0/yvbolt.win64.zip)
+
+[⬇️ Download for Linux x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.9.0/yvbolt.linux64.tar.xz)
+
+2025-11-23 v0.8.0
+
+- 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 for Windows x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.8.0/yvbolt.win64.zip)
+
+[⬇️ Download for Linux x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.8.0/yvbolt.linux64.tar.xz)
+
+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
+
+[⬇️ Download for Windows x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.7.0/yvbolt.win64.zip)
+
+[⬇️ Download for Linux x86_64](https://git.ivysaur.me/code.ivysaur.me/yvbolt/releases/download/v0.7.0/yvbolt.linux64.tar.xz)
+
+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
@@ -53,6 +130,10 @@ This project includes trademarked logo images for each supported database type.
 - 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

TODO

@@ -1,34 +1,81 @@
-- Insert
-- Update cell
-- Delete row(s)
+- Bolt, LMDB: Editing primary key causes duplicate field
+- Parity with QBolt, merge projects together
+- Portable mode (portable.txt or portable/ dir)
+- Syntax highlighting in editor
+- Mutation
+	- Badger: Support insert/update/delete
+	- Pebble: Support insert/update/delete
+	- Debconf: Support insert/update/delete
+	- Redis: Support insert/update/delete
+	- LevelDB: Support insert/update/delete
+	- Starskey: Support insert/update/delete
+	- SecretService: Support insert/update/delete
 - Binary data viewer
 	- Detect jpg/png and show as image
+	- Prevent editing invalid-utf8 fields as text (binary data editor?)
 - More DB types
-	- MySQL
+	- MySQL (& MariaDB/TiDB)
 	- Postgres
 		- CLI using psql
+	- MongoDB
+		- Lungo: Mini embeddable Mongo - https://github.com/256dpi/lungo 
 	- MSSQL (recursive navigation for instances)
 	- Other K/V stores from https://github.com/smallnest/kvbench 
-- SSH tunnels
-- Badger encryption key dialog
-- Pebble: connection options dialog
-- SQLite: DB compact action
-- SQLite: DB export backup action
-- SQLite: drop table action
-- SQLite: show views, triggers, indexes in nav
+	- Windows registry
+	- LDAP
+	- LotusDB https://github.com/lotusdblabs/lotusdb
+	- Bitcask https://git.mills.io/prologic/bitcask
+		- Related: Rosedb https://github.com/rosedblabs/rosedb
+	- 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
+	- 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
+	- CSV file
+		- Allow querying with sqlite or duckDB?
+	- Parquet file
+		- Allow querying with duckDB?
+	- IRC client
+	- SSDB (Redis-compatible)
+	- Time-series DBs
+		- Prometheus
+		- VictoriaMetrics
+		- FrostDB https://github.com/polarsignals/frostdb
+	- https://dbdb.io/browse?programming=go-lang&q=
+- Connection dialog
+	- SSH over Cockpit
 - SQLite CLI driver:
-	- Basic error handling
-	- Better lexing
+	- Context support
+	- Write support
 	- Attach to SSH tunnel
 	- Configure binary path
 	- https://ricardoanderegg.com/posts/sqlite-remote-explorer-gui/
 	- https://github.com/litements/litexplore
+- Badger:
+	- v1/v2/v3 support
+	- option to use namespace separators for virtual buckets
+- SQLite: drop table doesn't autorefresh nav since callback is late
+- LMDB: dupsort mode (duplicate keys / entries-per-key)
 - Build
-	- Makefile to cross-compile release binaries in docker
-	- Build own liblcl binaries in docker
 	- Win32 icon resource
 - 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
+- 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
+- Connecting to multiple DBs from connection manager: if one has an error, the error popup from the others is lost

config.go

@@ -0,0 +1,420 @@
+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"`
+	Bolt          *boltConfig              `yicon:":/assets/vendor_github.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       `yicon:":/assets/vendor_leveldb.png" json:",omitempty"`
+	LMDB          *lmdbConnection          `yicon:":/assets/vendor_lmdb.png" json:",omitempty"`
+	Pebble        *pebbleConnection        `yicon:":/assets/vendor_cockroach.png" json:",omitempty"`
+	Redis         *redisConnectionOptions  `yicon:":/assets/vendor_redis.png" json:",omitempty"`
+	SQLite        *sqliteConnection        `yicon:":/assets/vendor_sqlite.png" json:",omitempty"`
+	Starskey      *starskeyConnection      `yicon:":/assets/vendor_starskey.png" json:",omitempty"`
+}
+
+func NewConnectionConfig() *ConnectionConfig {
+	return &ConnectionConfig{
+		Debconf: &debconfConnection{
+			Database: "/var/cache/debconf/config.dat", // Prefill default path
+		},
+		Redis: &redisConnectionOptions{
+			Address: autoconfig.AddressPort{Port: 6379}, // default value
+		},
+	}
+}
+
+// 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() {
+
+	// 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)
+
+	config := NewConnectionConfig()
+
+	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)
+		}
+
+		// 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) {
+	data, err := f.getConnectionManagerContents()
+	if err != nil {
+		qt.QMessageBox_Warning(f.ui.MainWindow.QWidget, APPNAME, ConnMgrLoadError{err}.Error())
+	}
+
+	data.Entries = append(data.Entries, SavedConfigEntry{
+		Description: cc.String(),
+		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 +1,200 @@
+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
+	}
+
+	// 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 // TODO get app's own version
+
+	// When saving, the version that gets saved always has descriptions sorted
+	// alphabetically.
+	// But, you won't know this until you reload the contents.
+	sort.Slice(sc.Entries, func(i, j int) bool {
+		// FIXME there is probably a slightly more efficient way of doing this
+		return strings.ToLower(sc.Entries[i].Description) < strings.ToLower(sc.Entries[j].Description)
+	})
+
+	// 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

@@ -1,40 +1,27 @@
 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/ying32/govcl/vcl/types"
+	"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
 }
 
 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) {
+func (ld *badgerLoadedDatabase) RenderForNav(f *MainWindowUi, bucketPath []string) error {
 
 	// Load properties
 
@@ -42,25 +29,15 @@ func (ld *badgerLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
 	f.propertiesBox.SetText(content)
 
 	// Load data
-
-	f.contentBox.SetEnabled(false)
-	f.contentBox.Clear()
-
 	// Badger always uses Key + Value as the columns
 
-	f.contentBox.Columns().Clear()
-	colKey := f.contentBox.Columns().Add()
-	colKey.SetCaption("Key")
-	colKey.SetWidth(MY_WIDTH)
-	colKey.SetAlignment(types.TaLeftJustify)
-	colVal := f.contentBox.Columns().Add()
-	colVal.SetCaption("Value")
+	f.contentBox.SetColumnCount(2)
+	f.contentBox.SetHorizontalHeaderLabels([]string{"Key", "Value"})
+
+	f.contentBox.SetRowCount(0)
 
 	err := ld.db.View(func(txn *badger.Txn) error {
 
-		// Valid
-		f.contentBox.Clear()
-
 		// Create iterator
 		opts := badger.DefaultIteratorOptions
 		opts.PrefetchSize = 64
@@ -71,9 +48,10 @@ func (ld *badgerLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
 			item := it.Item()
 			k := item.Key()
 			err := item.Value(func(v []byte) error {
-				dataEntry := f.contentBox.Items().Add()
-				dataEntry.SetCaption(formatUtf8(k))
-				dataEntry.SubItems().Add(formatUtf8(v))
+				rpos := f.contentBox.RowCount()
+				f.contentBox.SetRowCount(rpos + 1)
+				f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatUtf8(k)))
+				f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatUtf8(v)))
 
 				return nil
 			})
@@ -84,81 +62,131 @@ func (ld *badgerLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
 		return nil
 	})
 	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load data: %s", err.Error()))
-		return
+		return err
 	}
 
 	// Valid
+	f.contentBox.ResizeColumnsToContents()
 	f.contentBox.SetEnabled(true)
+	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
+func (ld *badgerLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
+}
 
-	} else {
-		// No children deeper than that
-		return []string{}, nil
+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) NavContext(ndata *navData) ([]contextAction, error) {
-	return nil, nil // No special actions are supported
+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) ExecQuery(query string, resultArea *vcl.TListView) {
-	vcl.ShowMessage("Badger doesn't support querying")
+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
 
 //
 
-func (f *TMainForm) badgerAddDatabaseFromMemory() {
-	f.badgerAddDatabaseFrom(badger.DefaultOptions("").WithInMemory(true))
+type badgerConnection struct {
+	Type autoconfig.OneOf
+	Disk *struct {
+		Directory         autoconfig.ExistingDirectory
+		Readonly          bool
+		Encryption_Method autoconfig.EnumList `yenum:"None;;Hex (AES-128/192/256);;Passphrase (SHA256 KDF to AES-256)"`
+		Encryption_Key    autoconfig.Password
+	}
+	Memory *struct{}
 }
 
-func (f *TMainForm) badgerAddDatabaseFromDirectory(path string) {
-	f.badgerAddDatabaseFrom(badger.DefaultOptions(path))
-}
+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
+
+		switch bdc.Disk.Encryption_Method {
+		case 0: // None
+		case 1: // Hex (AES-128/192/256) -  must be 16/24/32 bytes
+			ehx, err := hex.DecodeString(string(bdc.Disk.Encryption_Key))
+			if err != nil {
+				return nil, "", err
+			}
+
+			if !(len(ehx) == 16 || len(ehx) == 24 || len(ehx) == 32) {
+				return nil, "", fmt.Errorf("Hex encryption key must be 16/24/32 bytes long, got %d", len(ehx))
+			}
+			opts.EncryptionKey = ehx
+
+		case 2: // Passphrase (SHA256 KDF to AES-256)
+			hasher := sha256.New()
+			hasher.Write([]byte(bdc.Disk.Encryption_Key))
+			opts.EncryptionKey = hasher.Sum(nil)
+		}
 
-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
+			return nil, "", err
 		}
 
-	ld := &badgerLoadedDatabase{
-		db: db,
+		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
 		}
 
-	if opts.Dir == "" {
-		ld.displayName = ":memory:" // SQLite-style naming
-	} else {
-		ld.displayName = filepath.Base(opts.Dir)
+		return &badgerLoadedDatabase{db: db}, `:memory:`, nil // SQLite-style naming
+
 	}
-
-	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_bolt.go

@@ -1,116 +1,190 @@
 package main
 
 import (
+	"context"
+	"errors"
 	"fmt"
 	"path/filepath"
 	"sort"
 	"strings"
 	"time"
-	"unsafe"
 
-	"github.com/ying32/govcl/vcl"
-	"github.com/ying32/govcl/vcl/types"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
 	"go.etcd.io/bbolt"
 	"go.etcd.io/bbolt/version"
 )
 
 type boltLoadedDatabase struct {
-	displayName string
 	path string
 	db   *bbolt.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
 }
 
-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) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *boltLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
+func (ld *boltLoadedDatabase) RenderForNav(f *MainWindowUi, 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)
+	content := fmt.Sprintf("Selected database: %#v", ld.db.Stats())
 	f.propertiesBox.SetText(content)
 
+	if len(bucketPath) == 0 {
+		return nil // Can't have data outside of the top bucket
+	}
+
 	// Load data
-
-	f.contentBox.SetEnabled(false)
-	f.contentBox.Clear()
-
 	// Bolt always uses Key + Value as the columns
 
-	f.contentBox.Columns().Clear()
-	colKey := f.contentBox.Columns().Add()
-	colKey.SetCaption("Key")
-	colKey.SetWidth(MY_WIDTH)
-	colKey.SetAlignment(types.TaLeftJustify)
-	colVal := f.contentBox.Columns().Add()
-	colVal.SetCaption("Value")
+	f.contentBox.SetColumnCount(2)
+	f.contentBox.SetHorizontalHeaderLabels([]string{"Key", "Value"})
+
+	f.contentBox.SetRowCount(0)
 
 	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
 		}
 
 		// Valid
-		f.contentBox.Clear()
-
 		c := b.Cursor()
 		for k, v := c.First(); k != nil; k, v = c.Next() {
-			dataEntry := f.contentBox.Items().Add()
-			dataEntry.SetCaption(formatUtf8(k))
-			dataEntry.SubItems().Add(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
+			}
+
+			rpos := f.contentBox.RowCount()
+			f.contentBox.SetRowCount(rpos + 1)
+			f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatUtf8(k)))
+			f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(formatUtf8(v)))
 		}
 		return nil
 	})
 	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load data for bucket %q: %s", bucketDisplayName, err.Error()))
-		return
+		return err
 	}
 
 	// Valid
+	f.contentBox.ResizeColumnsToContents()
 	f.contentBox.SetEnabled(true)
+	return nil
 }
 
-func (ld *boltLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
+func (n *boltLoadedDatabase) ApplyChanges(f *App, bucketPath []string) error {
+	if n.db.IsReadOnly() {
+		return errors.New("Database was opened read-only")
+	}
+
+	// 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 int) []byte {
+		return []byte(f.ui.contentBox.Item(rowid, 0).Text())
+	}
+
+	return n.db.Update(func(tx *bbolt.Tx) error {
+
+		// Get current bucket handle
+		b := boltTargetBucket(tx, bucketPath)
+
+		// Edit
+		for rowid, _ /*editcells*/ := range f.updateRows {
+			k := primaryKeyForRendered(rowid)
+			v := f.ui.contentBox.Item(rowid, 1).Text() // 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.ui.contentBox.Item(rowid, 1).Text() // 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
+	})
+}
+
+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) {
+func (ld *boltLoadedDatabase) NavContext(bucketPath []string) (ret []contextAction, err error) {
 	ret = append(ret, contextAction{"Add bucket...", ld.AddChildBucket})
 
-	if len(ndata.bucketPath) > 0 {
+	if len(bucketPath) > 0 {
 		ret = append(ret, contextAction{"Delete bucket", ld.DeleteBucket})
 	}
+
 	return
 }
 
-func (ld *boltLoadedDatabase) AddChildBucket(ndata *navData) {
-	bucketName := ""
-	if !vcl.InputQuery(APPNAME, "Enter a name for the new bucket:", &bucketName) {
-		return // cancel
+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
@@ -121,80 +195,40 @@ func (ld *boltLoadedDatabase) AddChildBucket(ndata *navData) {
 		return err
 	})
 	if err != nil {
-		vcl.ShowMessageFmt("Error adding bucket: %v", err)
+		return fmt.Errorf("Error adding bucket: %w", err)
 	}
+	return nil
 }
 
-func (ld *boltLoadedDatabase) DeleteBucket(ndata *navData) {
+func (ld *boltLoadedDatabase) DeleteBucket(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	// TODO add confirmation
+
 	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 {
-		vcl.ShowMessageFmt("Error deleting bucket %q: %v", strings.Join(ndata.bucketPath, `/`), err)
+		return fmt.Errorf("Error deleting bucket %q: %w", strings.Join(bucketPath, `/`), err)
 	}
-}
-
-func (ld *boltLoadedDatabase) ExecQuery(query string, resultArea *vcl.TListView) {
-	vcl.ShowMessage("Bolt doesn't support querying")
+	return nil
 }
 
 func (ld *boltLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
 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)
-}
-
 func boltTargetBucket(tx *bbolt.Tx, path []string) *bbolt.Bucket {
 
 	// If we are already deep in buckets, go directly there to find children

db_debconf.go

@@ -0,0 +1,120 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"yvbolt/debconf"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+)
+
+type debconfLoadedDatabase struct {
+	db *debconf.Database
+}
+
+func (ld *debconfLoadedDatabase) DriverName() string {
+	return "debconf"
+}
+
+func (ld *debconfLoadedDatabase) RenderForNav(f *MainWindowUi, bucketPath []string) error {
+
+	// Load properties
+
+	content := fmt.Sprintf("Applications: %d\nUnique attributes: %d\n", len(ld.db.Entries), len(ld.db.AllColumnNames))
+	f.propertiesBox.SetText(content)
+
+	// Load data
+
+	if len(bucketPath) == 0 {
+		return nil // No data at root level
+	}
+
+	// Find application entry for bucketPath
+
+	var appInfo *debconf.Application
+
+	for idx, app := range ld.db.Entries {
+		if app.Name == bucketPath[0] {
+			appInfo = &ld.db.Entries[idx] // TODO faster lookup?
+		}
+	}
+	if appInfo == nil {
+		return fmt.Errorf("Invalid application %q", bucketPath[0])
+	}
+
+	// Process entries for specific application
+
+	indexes := make(map[string]int)
+
+	f.contentBox.SetColumnCount(len(ld.db.AllColumnNames))
+	f.contentBox.SetHorizontalHeaderLabels(ld.db.AllColumnNames)
+
+	for i, cname := range ld.db.AllColumnNames {
+		indexes[cname] = i
+	}
+
+	for _, entry := range appInfo.Entries {
+
+		rpos := f.contentBox.RowCount()
+		f.contentBox.SetRowCount(rpos + 1)
+		f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(entry.Name))
+
+		for _, proppair := range entry.Properties {
+			f.contentBox.SetItem(rpos, indexes[proppair[0]], qt.NewQTableWidgetItem2(proppair[1]))
+		}
+	}
+
+	// Valid
+	f.contentBox.ResizeColumnsToContents()
+	f.contentBox.SetEnabled(true)
+	return 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 {
+		return []string{}, nil // No further children
+	}
+}
+
+func (ld *debconfLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
+	return nil, nil // No special actions are supported
+}
+
+func (ld *debconfLoadedDatabase) Close() {
+}
+
+var _ loadedDatabase = &debconfLoadedDatabase{} // interface assertion
+
+//
+
+//
+
+type debconfConnection struct {
+	Database autoconfig.ExistingFile `yfilter:"Debconf database (*.dat);;All files (*)"`
+}
+
+func (dc *debconfConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	fh, err := os.OpenFile(string(dc.Database), os.O_RDONLY, 0400)
+	if err != nil {
+		return nil, "", err
+	}
+	defer fh.Close()
+
+	db, err := debconf.Parse(fh)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return &debconfLoadedDatabase{db: db}, filepath.Base(string(dc.Database)), nil
+}

db_leveldb.go

@@ -0,0 +1,90 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"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) RenderForNav(f *MainWindowUi, bucketPath []string) error {
+
+	// Load properties
+
+	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)
+	f.propertiesBox.SetText(content)
+
+	// Load data
+	// leveldb always uses Key + Value as the columns
+
+	f.contentBox.SetColumnCount(2)
+	f.contentBox.SetHorizontalHeaderLabels([]string{"Key", "Value"})
+
+	itn := ld.db.NewIterator(nil, nil)
+	defer itn.Release()
+
+	for itn.Next() {
+
+		rpos := f.contentBox.RowCount()
+		f.contentBox.SetRowCount(rpos + 1)
+
+		f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(string(itn.Key())))
+		f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(string(itn.Value())))
+	}
+
+	// Valid
+	f.contentBox.ResizeColumnsToContents()
+	f.contentBox.SetEnabled(true)
+	return nil
+}
+
+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
+
+//
+
+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 +1,299 @@
+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) RenderForNav(f *MainWindowUi, bucketPath []string) error {
+
+	// Properties
+
+	if info, err := ld.db.Info(); err == nil {
+		f.propertiesBox.SetPlainText(fmt.Sprintf("LMDB info: %#v", info))
+	}
+
+	// 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.contentBox.SetColumnCount(2)
+	f.contentBox.SetHorizontalHeaderLabels([]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
+
+			rpos := f.contentBox.RowCount()
+			f.contentBox.SetRowCount(rpos + 1)
+
+			f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(string(key)))
+			f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(string(val)))
+		}
+
+		// Done
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	// Valid
+	f.contentBox.ResizeColumnsToContents()
+	f.contentBox.SetEnabled(true)
+	return nil
+}
+
+func (ld *lmdbDatabase) ApplyChanges(f *App, 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
+		}
+
+		// Insert
+
+		for rowid, _ := range f.insertRows {
+			key := f.ui.contentBox.Item(rowid, 0).Text()
+			val := f.ui.contentBox.Item(rowid, 1).Text()
+			err = txn.Put(dbi, []byte(key), []byte(val), 0)
+			if err != nil {
+				return fmt.Errorf("Inserting %q: %w", key, err)
+			}
+		}
+
+		// Edit
+
+		for rowid, _ := range f.updateRows {
+			_ = rowid
+			// FIXME need to support delete+reinsert if the key column is edited
+			// TODO
+		}
+
+		// Delete
+		for rowid, _ := range f.deleteRows {
+			key := f.ui.contentBox.Item(rowid, 0).Text()
+			err = txn.Del(dbi, []byte(key), nil)
+			if err != nil {
+				return fmt.Errorf("Removing %q: %w", key, err)
+			}
+		}
+
+		// Done
+		return 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 {
+// TODO add warning
+//}
+
+func (ld *lmdbDatabase) deleteChildDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+
+	// TODO add warning
+	return ld.db.Update(func(txn *lmdb.Txn) error {
+		dbi, err := txn.OpenDBI(bucketPath[0], 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{"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
+
+//
+
+type lmdbConnection struct {
+	Storage struct {
+		Type      autoconfig.OneOf
+		Directory *autoconfig.ExistingDirectory
+		File      *struct {
+			Path autoconfig.ExistingFile `yfilter:"LMDB database (*.mdb);;All files (*)"`
+		}
+	}
+	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_none.go

@@ -1,41 +1,22 @@
 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) RenderForNav(f *MainWindowUi, bucketPath []string) error {
+	f.propertiesBox.SetText("Open a database to get started...")
 	return nil
 }
 
-func (n *noLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
-	f.propertiesBox.SetText("Open a database to get started...")
-	f.contentBox.SetEnabled(false)
-	f.contentBox.Clear()
-}
-
-func (n *noLoadedDatabase) ExecQuery(query string, resultArea *vcl.TListView) {
-}
-
-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

@@ -4,39 +4,48 @@ import (
 	"context"
 	"fmt"
 	"path/filepath"
-	"unsafe"
+	"runtime/debug"
+	"sync"
 
 	"github.com/cockroachdb/pebble"
 	"github.com/cockroachdb/pebble/vfs"
-	"github.com/ying32/govcl/vcl"
-	"github.com/ying32/govcl/vcl/types"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
 )
 
 type pebbleLoadedDatabase struct {
-	displayName string
 	db *pebble.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
 }
 
-func (ld *pebbleLoadedDatabase) DisplayName() string {
-	return ld.displayName
+var (
+	version_Pebble_once sync.Once
+	version_Pebble      string
+)
+
+func pebbleDriverVersion() string {
+	version_Pebble_once.Do(func() {
+		// ReadBuildInfo still works even with `-ldflags '-s -w'`.
+		mm, ok := debug.ReadBuildInfo()
+		if !ok {
+			panic("Missing build info")
+		}
+
+		for _, dep := range mm.Deps {
+			switch dep.Path {
+			case "github.com/cockroachdb/pebble":
+				version_Pebble = dep.Version
+			}
+		}
+	})
+
+	return version_Pebble
 }
 
 func (ld *pebbleLoadedDatabase) DriverName() string {
-	return "Pebble " + version_Pebble // Parsed from embedded go.mod copy
+	return "Pebble " + pebbleDriverVersion() // Parsed from embedded go.mod copy
 }
 
-func (ld *pebbleLoadedDatabase) RootElement() *vcl.TTreeNode {
-	return ld.nav
-}
-
-func (ld *pebbleLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
-
-func (ld *pebbleLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
+func (ld *pebbleLoadedDatabase) RenderForNav(f *MainWindowUi, bucketPath []string) error {
 
 	ctx := context.Background()
 
@@ -46,99 +55,83 @@ func (ld *pebbleLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
 	f.propertiesBox.SetText(content)
 
 	// Load data
-
-	f.contentBox.SetEnabled(false)
-	f.contentBox.Clear()
-
 	// pebble always uses Key + Value as the columns
 
-	f.contentBox.Columns().Clear()
-	colKey := f.contentBox.Columns().Add()
-	colKey.SetCaption("Key")
-	colKey.SetWidth(MY_WIDTH)
-	colKey.SetAlignment(types.TaLeftJustify)
-	colVal := f.contentBox.Columns().Add()
-	colVal.SetCaption("Value")
+	f.contentBox.SetColumnCount(2)
+	f.contentBox.SetHorizontalHeaderLabels([]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() {
 		k := itr.Key()
 		v, err := itr.ValueAndErr()
 		if err != nil {
-			vcl.ShowMessage(fmt.Sprintf("Failed to load data for key %q: %s", formatAny(k), err.Error()))
-			return
+			return fmt.Errorf("Failed to load data for key %q: %w", formatAny(k), err)
 		}
 
-		dataEntry := f.contentBox.Items().Add()
-		dataEntry.SetCaption(formatUtf8(k))
-		dataEntry.SubItems().Add(formatUtf8(v))
+		rpos := f.contentBox.RowCount()
+		f.contentBox.SetRowCount(rpos + 1)
+
+		f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatUtf8(k)))
+		f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(formatUtf8(v)))
 	}
 
 	// Valid
+	f.contentBox.ResizeColumnsToContents()
 	f.contentBox.SetEnabled(true)
+	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
-
-	} else {
-		// No children deeper than that
-		return []string{}, nil
-	}
+func (ld *pebbleLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+	return []string{}, nil // No children
 }
 
-func (ld *pebbleLoadedDatabase) NavContext(ndata *navData) ([]contextAction, error) {
+func (ld *pebbleLoadedDatabase) NavContext(bucketPath []string) ([]contextAction, error) {
 	return nil, nil // No special actions are supported
 }
 
-func (ld *pebbleLoadedDatabase) ExecQuery(query string, resultArea *vcl.TListView) {
-	vcl.ShowMessage("pebble doesn't support querying")
-}
-
 func (ld *pebbleLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
 var _ loadedDatabase = &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
+	}
+	Memory *struct{}
 }
 
-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 pdc.Disk != nil {
+		opts.ReadOnly = pdc.Disk.Readonly
+
+		db, err := pebble.Open(string(pdc.Disk.Directory), opts)
 		if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database: %s", err.Error()))
-		return
+			return nil, "", err
 		}
 
-	ld := &pebbleLoadedDatabase{
-		db:          db,
-		displayName: filepath.Base(dirname),
+		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
 		}
 
-	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
+		return &pebbleLoadedDatabase{db: db}, `:memory:`, nil // SQLite-style naming
 	}
-	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

@@ -4,236 +4,49 @@ import (
 	"context"
 	"fmt"
 	"strconv"
-	"unsafe"
 
 	"yvbolt/lexer"
 
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
 	"github.com/redis/go-redis/v9"
-	"github.com/ying32/govcl/vcl"
-	"github.com/ying32/govcl/vcl/types"
+	"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 (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) {
-	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 {
-			vcl.ShowMessage(fmt.Sprintf("Retreiving database info: %v", err))
-			return
-		}
-
-		f.propertiesBox.SetText(infostr)
-
-		// Disable data tab
-		f.contentBox.SetEnabled(false)
-		f.contentBox.Clear()
-
-	} 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 {
-			vcl.ShowMessage(fmt.Sprintf("Switching to database %q: %v", ndata.bucketPath[0], err))
-			return
-		}
-
-		allKeys, err := ld.db.Keys(ctx, "*").Result()
-		if err != nil {
-			vcl.ShowMessage(fmt.Sprintf("Listing keys in database %q: %v", ndata.bucketPath[0], err))
-			return
-		}
-
-		f.propertiesBox.SetText(fmt.Sprintf("Database %s\nTotal keys: %d\n", ndata.bucketPath[0], len(allKeys)))
-
-		// Redis always uses Key + Value as the columns
-
-		f.contentBox.SetEnabled(false)
-		f.contentBox.Clear()
-
-		f.contentBox.Columns().Clear()
-		colKey := f.contentBox.Columns().Add()
-		colKey.SetCaption("Key")
-		colKey.SetWidth(MY_WIDTH)
-		colKey.SetAlignment(types.TaLeftJustify)
-		colType := f.contentBox.Columns().Add()
-		colType.SetCaption("Type")
-		colVal := f.contentBox.Columns().Add()
-		colVal.SetCaption("Value")
-
-		for _, key := range allKeys {
-			typeName, err := ld.db.Type(ctx, key).Result()
-			if err != nil {
-				vcl.ShowMessage(fmt.Sprintf("Loading %q/%q: %v", ndata.bucketPath[0], key, err))
-				return
-			}
-
-			dataEntry := f.contentBox.Items().Add()
-			dataEntry.SetCaption(key) // formatUtf8
-			dataEntry.SubItems().Add(typeName)
-
-			switch typeName {
-			case "string":
-				val, err := ld.db.Get(ctx, key).Result()
-				if err != nil {
-					vcl.ShowMessage(fmt.Sprintf("Loading %q/%q: %v", ndata.bucketPath[0], key, err))
-					return
-				}
-				dataEntry.SubItems().Add(val)
-
-			case "hash":
-				val, err := ld.db.HGetAll(ctx, key).Result()
-				if err != nil {
-					vcl.ShowMessage(fmt.Sprintf("Loading %q/%q: %v", ndata.bucketPath[0], key, err))
-					return
-				}
-				// It's a map[string]string
-				dataEntry.SubItems().Add(formatAny(val))
-
-			case "lists":
-				fallthrough
-			case "sets":
-				fallthrough
-			case "sorted sets":
-				fallthrough
-			case "stream":
-				fallthrough
-
-			default:
-				dataEntry.SubItems().Add("<<<other object type>>>")
-			}
-
-		}
-
-		// Valid
-		f.contentBox.SetEnabled(true)
-
-	} else {
-		vcl.ShowMessage(fmt.Sprintf("Unexpected nav position %q", ndata.bucketPath))
-		return
-
-	}
-}
-
-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.TListView) {
-	ctx := context.Background()
-
-	// Need to parse the query into separate string+args fields for the protocol
-	fields, err := lexer.Fields(query)
-	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Parsing the query: %v", err))
-		return
-	}
-
-	fields_boxed := box_interface(fields)
-
-	ret, err := ld.db.Do(ctx, fields_boxed...).Result()
-	if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("The redis query returned an error: %v", err))
-		return
-	}
-
-	resultArea.SetEnabled(false)
-	resultArea.Clear()
-
-	resultArea.Columns().Clear()
-	colVal := resultArea.Columns().Add()
-	colVal.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 {
-			cell := resultArea.Items().Add()
-			cell.SetCaption(single) // formatUtf8
-		}
-
-	default:
-		// Single value
-		dataEntry := resultArea.Items().Add()
-		dataEntry.SetCaption(formatAny(ret)) // formatUtf8
-
-	}
-
-	resultArea.SetEnabled(true)
-}
-
-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 {
@@ -241,13 +54,12 @@ 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 {
@@ -263,28 +75,195 @@ 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) RenderForNav(f *MainWindowUi, bucketPath []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)
+		}
+
+		f.propertiesBox.SetText(infostr)
+
+		// 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)
+		}
+
+		f.propertiesBox.SetText(fmt.Sprintf("Database %s\nTotal keys: %d\n", bucketPath[0], len(allKeys)))
+
+		// Redis always uses Key + Value as the columns
+
+		f.contentBox.SetColumnCount(3)
+		f.contentBox.SetHorizontalHeaderLabels([]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.contentBox.RowCount()
+			f.contentBox.SetRowCount(rpos + 1)
+			f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatUtf8([]byte(key))))
+			f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(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.contentBox.SetItem(rpos, 2, qt.NewQTableWidgetItem2(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.contentBox.SetItem(rpos, 2, qt.NewQTableWidgetItem2(formatAny(val)))
+
+			case "lists":
+				fallthrough
+			case "sets":
+				fallthrough
+			case "sorted sets":
+				fallthrough
+			case "stream":
+				fallthrough
+
+			default:
+				f.contentBox.SetItem(rpos, 2, qt.NewQTableWidgetItem2("<<<other object type>>>"))
+			}
+
+		}
+
+		// Valid
+		f.contentBox.ResizeColumnsToContents()
+		f.contentBox.SetEnabled(true)
+		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, resultArea *qt.QTableWidget) 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_clear_grid(resultArea)
+	resultArea.SetColumnCount(1)
+	resultArea.SetHorizontalHeaderLabels([]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 {
+
+			rpos := resultArea.RowCount()
+			resultArea.SetRowCount(rpos + 1)
+			resultArea.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatUtf8([]byte(single))))
+		}
+
+	default:
+		// Single value
+		rpos := resultArea.RowCount()
+		resultArea.SetRowCount(rpos + 1)
+		resultArea.SetItem(rpos, 0, qt.NewQTableWidgetItem2(formatAny(ret))) // formatUtf8
+
+	}
+
+	resultArea.ResizeColumnsToContents()
+	resultArea.SetEnabled(true)
+
+	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_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) RenderForNav(f *MainWindowUi, bucketPath []string) error {
+
+	const (
+		collectionBasePath = "/org/freedesktop/secrets/collection/"
+		itemInterface      = "org.freedesktop.Secret.Item"
+		serviceName        = "org.freedesktop.secrets"
+	)
+
+	// No properties
+
+	// No data
+
+	if len(bucketPath) == 0 {
+		// No data
+	} else if len(bucketPath) == 1 {
+
+		f.contentBox.SetColumnCount(6)
+		f.contentBox.SetHorizontalHeaderLabels([]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)
+			}
+
+			rpos := f.contentBox.RowCount()
+			f.contentBox.SetRowCount(rpos + 1)
+
+			f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(string(item)))            // ID
+			f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(label.Value().(string)))  // Label
+			f.contentBox.SetItem(rpos, 2, qt.NewQTableWidgetItem2(attrs.String()))          // Attributes (JSON)
+			f.contentBox.SetItem(rpos, 3, qt.NewQTableWidgetItem2(secr.ContentType))        // ContentType
+			f.contentBox.SetItem(rpos, 4, qt.NewQTableWidgetItem2(string(secr.Parameters))) // Parameters
+			f.contentBox.SetItem(rpos, 5, qt.NewQTableWidgetItem2(string(secr.Value)))      // Value
+		}
+
+		// Valid
+		f.contentBox.ResizeColumnsToContents()
+		f.contentBox.SetEnabled(true)
+	}
+
+	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

@@ -1,15 +1,18 @@
 package main
 
 import (
+	"context"
 	"database/sql"
+	"errors"
 	"fmt"
 	"path/filepath"
-	"unsafe"
+	"strings"
 
-	_ "yvbolt/sqliteclidriver"
+	"yvbolt/sqliteclidriver"
 
-	"github.com/ying32/govcl/vcl"
-	"github.com/ying32/govcl/vcl/types"
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	mattn_sqlite3 "github.com/mattn/go-sqlite3"
 )
 
 const (
@@ -17,43 +20,35 @@ const (
 )
 
 type sqliteLoadedDatabase struct {
-	displayName string
-	path        string
 	db *sql.DB
-	nav         *vcl.TTreeNode
-
-	arena []*navData // keepalive
 }
 
-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) RenderForNav(f *MainWindowUi, bucketPath []string) error {
 
-func (ld *sqliteLoadedDatabase) Keepalive(ndata *navData) {
-	ld.arena = append(ld.arena, ndata)
-}
+	ctx := context.TODO()
 
-func (ld *sqliteLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
-
-	if len(ndata.bucketPath) == 0 {
+	if len(bucketPath) == 0 {
 		// Top-level
 		f.propertiesBox.SetText("Please select...")
-		f.contentBox.SetEnabled(false)
-		f.contentBox.Clear()
+		return nil
 
-	} else if len(ndata.bucketPath) == 1 {
+	} else if len(bucketPath) == 1 {
 		// Category (tables, ...)
 		f.propertiesBox.SetText("Please select...")
-		f.contentBox.SetEnabled(false)
-		f.contentBox.Clear()
+		return nil
 
-	} else if len(ndata.bucketPath) == 2 && ndata.bucketPath[0] == sqliteTablesCaption {
+	} else if len(bucketPath) == 2 && 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)
@@ -66,38 +61,44 @@ func (ld *sqliteLoadedDatabase) RenderForNav(f *TMainForm, ndata *navData) {
 		// Display table properties
 		f.propertiesBox.SetText(fmt.Sprintf("Selected table %q\n\nSchema:\n\n%s", tableName, schemaStmt))
 
-		f.contentBox.SetEnabled(false)
-		f.contentBox.Clear()
-
 		// Load column details
 		// Use SELECT form instead of common PRAGMA table_info so we can just get names
 		// We could possibly get this from the main data select, but this will
 		// work even when there are 0 results
 		columnNames, err := ld.sqliteGetColumnNamesForTable(tableName)
 		if err != nil {
-			vcl.ShowMessageFmt("Failed to load columns for table %q: %s", tableName, err.Error())
-			return
+			return fmt.Errorf("Failed to load columns for table %q: %w", tableName, err)
 		}
 
 		populateColumns(columnNames, f.contentBox)
 
+		// 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
 
 		// Select * with small limit
-		datar, err := ld.db.Query(`SELECT * FROM ` + tableName + ` LIMIT 1000`) // WARNING can't prepare this parameter, but it comes from the DB (trusted)
+		datar, err := ld.db.Query(`SELECT * FROM "` + tableName + `" LIMIT 1000`) // WARNING can't prepare this parameter, but it comes from the DB (trusted)
 		if err != nil {
-			vcl.ShowMessageFmt("Failed to load data for table %q: %s", tableName, err.Error())
-			return
+			return fmt.Errorf("Failed to load data for table %q: %w", tableName, err)
 		}
 		defer datar.Close()
-		populateRows(datar, f.contentBox)
+		populateRows(datar, f.contentBox, primaryKeyIdx)
 
 		// We successfully populated the data grid
+		f.contentBox.ResizeColumnsToContents()
 		f.contentBox.SetEnabled(true)
+		return nil
 
 	} else {
 		// ??? unknown
+		return errors.New("?")
 
 	}
 
@@ -129,19 +130,14 @@ func (ld *sqliteLoadedDatabase) sqliteGetColumnNamesForTable(tableName string) (
 	return ret, nil
 }
 
-func populateColumns(names []string, dest *vcl.TListView) {
-	dest.Columns().Clear()
-	for _, columnName := range names {
-		col := dest.Columns().Add()
-		col.SetCaption(columnName)
-		col.SetWidth(MY_WIDTH)
-		col.SetAlignment(types.TaLeftJustify)
-	}
+func populateColumns(names []string, dest *qt.QTableWidget) {
+	dest.SetColumnCount(len(names))
+	dest.SetHorizontalHeaderLabels(names)
 }
 
-func populateRows(rr *sql.Rows, dest *vcl.TListView) {
+func populateRows(rr *sql.Rows, dest *qt.QTableWidget, pk_index int) {
 
-	numColumns := int(dest.Columns().Count())
+	numColumns := int(dest.ColumnCount())
 
 	for rr.Next() {
 		fields := make([]interface{}, numColumns)
@@ -152,56 +148,194 @@ func populateRows(rr *sql.Rows, dest *vcl.TListView) {
 
 		err := rr.Scan(pfields...)
 		if err != nil {
-			vcl.ShowMessageFmt("Failed to load data: %s", err.Error())
+			qt.QMessageBox_Warning(dest.QWidget, APPNAME, fmt.Sprintf("Failed to load data: %s", err.Error()))
 			return
 		}
 
-		dataEntry := dest.Items().Add()
-		dataEntry.SetCaption(formatAny(fields[0]))
-		for i := 1; i < len(fields); i += 1 {
-			dataEntry.SubItems().Add(formatAny(fields[i]))
+		rpos := dest.RowCount()
+		dest.SetRowCount(rpos + 1)
+		for i := 0; i < len(fields); i += 1 {
+
+			cellItem := qt.NewQTableWidgetItem2(formatAny(fields[i]))
+			if i == pk_index {
+				cellItem.SetData(DataPrimaryKeyRole, qt.NewQVariant11(formatAny(fields[i]))) // FIXME stop doing string conversion here
+			} else if pk_index < 0 {
+				// We do not have a primary key for this table
+				// Therefore - disable editing
+				cellItem.SetFlags(cellItem.Flags() & ^qt.ItemIsEditable)
+			}
+
+			dest.SetItem(rpos, i, cellItem)
 		}
 
 	}
 	if rr.Err() != nil {
-		vcl.ShowMessageFmt("Failed to load data: %s", rr.Err().Error())
+		qt.QMessageBox_Warning(dest.QWidget, APPNAME, fmt.Sprintf("Failed to load data: %s", rr.Err().Error()))
 		return
 	}
 }
 
-func (ld *sqliteLoadedDatabase) ExecQuery(query string, resultArea *vcl.TListView) {
+func (ld *sqliteLoadedDatabase) ExecQuery(query string, resultArea *qt.QTableWidget) error {
 	rr, err := ld.db.Query(query)
 	if err != nil {
-		vcl.ShowMessage(err.Error())
-		return
+		return err
 	}
 
 	defer rr.Close()
 
-	resultArea.SetEnabled(false)
-	resultArea.Clear()
+	vcl_clear_grid(resultArea)
 
 	columns, err := rr.Columns()
 	if err != nil {
-		vcl.ShowMessage(err.Error())
-		return
+		return err
 	}
 
 	populateColumns(columns, resultArea)
 
-	populateRows(rr, resultArea)
+	populateRows(rr, resultArea, -1)
 
+	resultArea.ResizeColumnsToContents()
 	resultArea.SetEnabled(true)
+	resultArea.EditTriggers()
+	return nil
 }
 
-func (ld *sqliteLoadedDatabase) NavChildren(ndata *navData) ([]string, error) {
+type RowQueryContexter interface {
+	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+}
 
-	if len(ndata.bucketPath) == 0 {
+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 *App, bucketPath []string) (retErr error) {
+
+	if len(bucketPath) != 2 {
+		return errors.New("invalid selection")
+	}
+	tableName := bucketPath[1]
+
+	// We have rendered row IDs, need to convert back to an SQLite primary key
+	// TODO stash the real key inside f.ui.contentBox.Objects()
+	// FIXME breaks if you try and edit the primary key(!) because the previous
+
+	ctx := context.Background()
+
+	tx, err := n.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+
+	var commitOK bool = false
+	defer func() {
+		if !commitOK {
+			err := tx.Rollback()
+			if err != nil {
+				retErr = err
+			}
+		}
+	}()
+
+	// Data grid properties
+	var columnNames []string
+	for i := 0; i < f.ui.contentBox.ColumnCount(); i++ {
+		columnNames = append(columnNames, f.ui.contentBox.HorizontalHeaderItem(i).Text())
+	}
+
+	// Query sqlite table metadata to determine which of these is the PRIMARY KEY
+	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
+	primaryColumnIdx, ok := slice_find(columnNames, primaryColumnName)
+	if !ok {
+		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
+	// Skip that, and just rely on primary key uniqueness
+
+	// Edit
+	for rowid, editcells := range f.updateRows {
+		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.ui.contentBox.Item(rowid, cell).Text())
+		}
+		stmt += ` WHERE "` + primaryColumnName + `" = ?`
+
+		// The primary key was stashed in DataPrimaryKeyRole, on the pk_idx'th
+		// column, as a QString qvariant
+		// FIXME avoid string marshalling
+		pkVal := f.ui.contentBox.Item(rowid, primaryColumnIdx).Data(DataPrimaryKeyRole).ToString()
+		params = append(params, pkVal)
+
+		_, err = tx.ExecContext(ctx, stmt, params...)
+		if err != nil {
+			return fmt.Errorf("Updating row %q: %w", pkVal, err)
+		}
+	}
+
+	// Delete by key (affects rowids after re-render)
+	for rowid, _ := range f.deleteRows {
+		pkVal := f.ui.contentBox.Item(rowid, primaryColumnIdx).Text()
+
+		stmt := `DELETE FROM "` + tableName + `" WHERE "` + primaryColumnName + `" = ?`
+
+		_, err = tx.ExecContext(ctx, stmt, pkVal)
+		if err != nil {
+			return fmt.Errorf("Deleting row %q: %w", pkVal, err)
+		}
+	}
+
+	// Insert all new entries
+	for rowid, _ := range f.insertRows {
+		stmt := `INSERT INTO "` + tableName + `" (` + strings.Join(columnNames, `, `) + `) VALUES (`
+		params := []interface{}{} // FIXME reinstate types for the driver (although SQLite doesn't mind)
+
+		for colid := 0; colid < len(columnNames); colid++ {
+			if colid > 0 {
+				stmt += `, `
+			}
+			stmt += "?"
+			params = append(params, f.ui.contentBox.Item(rowid, colid).Text())
+		}
+		stmt += `)`
+
+		_, err = tx.ExecContext(ctx, stmt, params...)
+		if err != nil {
+			return fmt.Errorf("Inserting row: %w", err)
+		}
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return err
+	}
+
+	commitOK = true // no need for rollback
+	return nil
+}
+
+func (ld *sqliteLoadedDatabase) NavChildren(bucketPath []string) ([]string, error) {
+
+	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
@@ -225,59 +359,97 @@ 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) ([]contextAction, error) {
-	return nil, nil // No special actions are supported
+func (ld *sqliteLoadedDatabase) NavContext(bucketPath []string) (ret []contextAction, err error) {
+
+	if len(bucketPath) == 0 {
+		ret = append(ret, contextAction{"Compact database", ld.CompactDatabase})
+		ret = append(ret, contextAction{"Export backup...", ld.ExportBackup})
+	}
+	if len(bucketPath) == 2 {
+		ret = append(ret, contextAction{"Drop table", ld.DropTable})
+	}
+	return
+}
+
+func (ld *sqliteLoadedDatabase) CompactDatabase(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	_, err := ld.db.Exec(`VACUUM;`)
+	return err
+}
+
+func (ld *sqliteLoadedDatabase) ExportBackup(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	// Popup for output file
+	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 ?`, savePath)
+	return err
+}
+
+func (ld *sqliteLoadedDatabase) DropTable(sender *qt.QTreeWidgetItem, bucketPath []string) error {
+	if len(bucketPath) != 2 {
+		return errors.New("Invalid selection")
+	}
+
+	//
+
+	tableName := bucketPath[1]
+
+	if !vcl_confirm_dialog(sender.TreeWidget().QWidget, "Drop table", fmt.Sprintf("Are you sure you want to drop the table %q?", tableName)) {
+		return nil // cancelled
+	}
+
+	_, err := ld.db.Exec(`DROP TABLE "` + tableName + `"`) // WARNING can't prepare this parameter, but it comes from the DB (trusted)
+	return err
 }
 
 func (ld *sqliteLoadedDatabase) Close() {
 	_ = ld.db.Close()
-	ld.arena = nil
 }
 
 var _ loadedDatabase = &sqliteLoadedDatabase{}          // interface assertion
+var _ editableLoadedDatabase = &sqliteLoadedDatabase{}  // interface assertion
+var _ queryableLoadedDatabase = &sqliteLoadedDatabase{} // interface assertion
 
 //
 
-func (f *TMainForm) sqliteAddDatabaseFromFile(path string, cliDriver bool) {
+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"`
+	}
+	Memory *struct{}
+}
 
+func (sc *sqliteConnection) Connect(ctx context.Context) (loadedDatabase, string, error) {
+	if sc.Disk != nil {
 		driver := "sqlite3"
-	if cliDriver {
+		if sc.Disk.CliDriver {
 			driver = "sqliteclidriver"
 		}
 
-	// TODO load in background thread to stop blocking the UI
-	db, err := sql.Open(driver, path)
+		db, err := sql.Open(driver, string(sc.Disk.Database))
 		if err != nil {
-		vcl.ShowMessage(fmt.Sprintf("Failed to load database '%s': %s", path, err.Error()))
-		return
+			return nil, "", err
 		}
 
-	ld := &sqliteLoadedDatabase{
-		path:        path,
-		displayName: filepath.Base(path),
-		db:          db,
+		return &sqliteLoadedDatabase{db: db}, filepath.Base(string(sc.Disk.Database)), nil
+
+	} else { // memory
+		db, err := sql.Open("sqlite3", ":memory:")
+		if err != nil {
+			return nil, "", err
 		}
 
-	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
+		return &sqliteLoadedDatabase{db: db}, ":memory:", nil
 	}
-	ld.nav.SetData(unsafe.Pointer(navData))
-
-	f.dbs = append(f.dbs, ld)
-	f.Buckets.SetSelected(ld.nav) // Select new element
-
-	ld.Keepalive(navData)
 }

db_sqlite_cgo.go

@@ -1,12 +0,0 @@
-//+build cgo
-
-package main
-
-import (
-	sqlite3 "github.com/mattn/go-sqlite3"
-)
-
-func (ld *sqliteLoadedDatabase) DriverName() string {
-	ver1, _, _ := sqlite3.Version()
-	return "SQLite " + ver1
-}

db_sqlite_nocgo.go

@@ -1,11 +0,0 @@
-//+build !cgo
-
-package main
-
-import (
-	_ "modernc.org/sqlite"
-)
-
-func (ld *sqliteLoadedDatabase) DriverName() string {
-	return "SQLite (modernc.org)"
-}

db_starskey.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"github.com/starskey-io/starskey"
+)
+
+type starskeyLdb struct {
+	db *starskey.Starskey
+}
+
+func (ld *starskeyLdb) DriverName() string {
+	return "Starskey"
+}
+
+func (ld *starskeyLdb) RenderForNav(f *MainWindowUi, bucketPath []string) error {
+
+	// No properties
+
+	// Load data
+	// Starskey always uses Key + Value as the columns
+
+	f.contentBox.SetColumnCount(2)
+	f.contentBox.SetHorizontalHeaderLabels([]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
+
+	// We have to supply valid bounds that work for bytes.Compare
+	// FIXME any better way to find all keys?
+	earliestPossibleKey := []byte{0x00}
+	lastPossibleKey := []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
+	allKeys, err := ld.db.Range(earliestPossibleKey, lastPossibleKey)
+	if err != nil {
+		return 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)
+		}
+
+		rpos := f.contentBox.RowCount()
+		f.contentBox.SetRowCount(rpos + 1)
+
+		f.contentBox.SetItem(rpos, 0, qt.NewQTableWidgetItem2(string(key)))
+		f.contentBox.SetItem(rpos, 1, qt.NewQTableWidgetItem2(string(val)))
+	}
+
+	// Valid
+	f.contentBox.ResizeColumnsToContents()
+	f.contentBox.SetEnabled(true)
+	return nil
+}
+
+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
+
+//
+
+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

@@ -0,0 +1,122 @@
+package debconf
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+)
+
+const (
+	DefaultConfigDat    = `/var/cache/debconf/config.dat`
+	DefaultPasswordsDat = `/var/cache/debconf/passwords.dat`
+	DefaultTemplatesDat = `/var/cache/debconf/templates.dat`
+)
+
+type Entry struct {
+	Name       string
+	Properties [][2]string
+}
+
+type Application struct {
+	Name    string
+	Entries []Entry
+}
+
+type Database struct {
+	Entries        []Application
+	AllColumnNames []string
+}
+
+func Parse(r io.Reader) (*Database, error) {
+	sc := bufio.NewScanner(r)
+
+	var entries []Entry
+	var wip Entry
+	var linenum int = 0
+
+	knownColumnNames := map[string]struct{}{
+		"Name": struct{}{},
+	}
+	var discoveredColumns []string = []string{"Name"}
+
+	for sc.Scan() {
+		linenum++
+		line := sc.Text()
+
+		if line == "" {
+			if wip.Name != "" {
+				entries = append(entries, wip)
+				wip = Entry{}
+			}
+			continue
+		}
+
+		if line[0] == ' ' {
+			// continuation of last text entry
+			if len(wip.Properties) == 0 {
+				return nil, fmt.Errorf("Continuation of nonexistent entry on line %d", linenum)
+			}
+
+			wip.Properties[len(wip.Properties)-1][1] += line[1:]
+
+		} else {
+			// New pair on current element
+			key, rest, ok := strings.Cut(line, `:`)
+			if !ok {
+				return nil, fmt.Errorf("Missing : on line %d", linenum)
+			}
+
+			if _, ok := knownColumnNames[key]; !ok {
+				knownColumnNames[key] = struct{}{}
+				discoveredColumns = append(discoveredColumns, key)
+			}
+
+			rest = strings.TrimLeft(rest, " \t")
+
+			if key == `Name` {
+				wip.Name = rest
+			} else {
+				wip.Properties = append(wip.Properties, [2]string{key, rest})
+			}
+
+		}
+
+	}
+
+	if sc.Err() != nil {
+		return nil, sc.Err()
+	}
+
+	if wip.Name != "" {
+		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:        apps,
+		AllColumnNames: discoveredColumns,
+	}, nil
+}

debconf/debconf_test.go

@@ -0,0 +1,30 @@
+package debconf
+
+import (
+	"os"
+	"testing"
+)
+
+func TestDebconfParse(t *testing.T) {
+	src, err := os.Open(DefaultConfigDat)
+	if err != nil {
+		if os.IsNotExist(err) {
+			t.Skip(err)
+		}
+		t.Fatal(err)
+	}
+	defer src.Close()
+
+	db, err := Parse(src)
+	if err != nil {
+		t.Fatalf("Parse: %v", err)
+	}
+
+	if len(db.Entries) == 0 {
+		t.Errorf("expected >0 entries, got %v", len(db.Entries))
+	}
+
+	if len(db.AllColumnNames) == 0 {
+		t.Errorf("expected >0 column names, got %v", len(db.AllColumnNames))
+	}
+}

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 +1,40 @@
+<RCC>
+  <qresource prefix="/">
+    <file>assets/vendor_qt.png</file>
+    <file>assets/connect.png</file>
+    <file>assets/disconnect.png</file>
+    <file>assets/database_key.png</file>
+    <file>assets/help.png</file>
+    <file>assets/add.png</file>
+    <file>assets/arrow_refresh.png</file>
+    <file>assets/chart_bar.png</file>
+    <file>assets/database.png</file>
+    <file>assets/database_add.png</file>
+    <file>assets/database_delete.png</file>
+    <file>assets/database_lightning.png</file>
+    <file>assets/database_save.png</file>
+    <file>assets/delete.png</file>
+    <file>assets/lightning.png</file>
+    <file>assets/lightning_go.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_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_mysql.png</file>
+    <file>assets/vendor_redis.png</file>
+    <file>assets/vendor_sqlite.png</file>
+    <file>assets/vendor_starskey.png</file>
+  </qresource>
+</RCC>

go.mod

@@ -1,68 +1,71 @@
 module yvbolt
 
-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/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/cockroachdb/pebble v1.1.5
+	github.com/dgraph-io/badger/v4 v4.8.0
+	github.com/google/uuid v1.6.0
+	github.com/mappu/autoconfig v0.3.1-0.20251126064959-64718706eb2a
+	github.com/mappu/miqt v0.12.1-0.20251106063543-466b60e47edf
+	github.com/mattn/go-sqlite3 v1.14.32
+	github.com/redis/go-redis/v9 v9.16.0
+	github.com/stretchr/testify v1.11.1
+	github.com/syndtr/goleveldb v1.0.0
+	go.etcd.io/bbolt v1.4.3
+	golang.org/x/crypto v0.44.0
 )
 
 require (
-	github.com/DataDog/zstd v1.4.5 // indirect
+	al.essio.dev/pkg/shellescape v1.5.1 // indirect
+	github.com/DataDog/zstd v1.5.7 // 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/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 v1.2.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/dgraph-io/ristretto v0.1.1 // 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 v0.36.2 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/godbus/dbus/v5 v5.1.0 // 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/google/uuid v1.3.0 // 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/flatbuffers v25.9.23+incompatible // indirect
+	github.com/klauspost/compress v1.18.1 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.9 // 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/ledgerwatch/lmdb-go v1.18.2 // 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/prometheus/client_golang v1.23.2 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.67.2 // indirect
+	github.com/prometheus/procfs v0.19.2 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
+	github.com/starskey-io/starskey v0.1.9 // indirect
+	github.com/zalando/go-keyring v0.2.6 // indirect
+	github.com/zeebo/xxh3 v1.0.2 // indirect
+	go.mongodb.org/mongo-driver v1.17.2 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/otel v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.38.0 // indirect
+	go.opentelemetry.io/otel/trace v1.38.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
+	golang.org/x/net v0.46.0 // indirect
+	golang.org/x/sys v0.38.0 // indirect
+	golang.org/x/text v0.31.0 // 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 +1,201 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
-cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
-cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
-cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
-cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
-cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
-cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
-cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
-cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
-cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
-cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
-cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
-cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
-cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
-cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
-cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
-cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
-cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
-cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
-cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
-dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ=
-github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+al.essio.dev/pkg/shellescape v1.5.1 h1:86HrALUujYS/h+GtqoB26SBEdkWfmMI6FubjXlsXyho=
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-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

images.go

@@ -1,70 +0,0 @@
-package main
-
-import (
-	"embed"
-
-	"github.com/ying32/govcl/vcl"
-)
-
-//go:embed assets/*
-var assetsFs embed.FS
-
-const (
-	imgArrowRefresh int32 = iota
-	imgChartBar
-	imgDatabase
-	imgDatabaseAdd
-	imgDatabaseDelete
-	imgDatabaseLightning
-	imgDatabaseSave
-	imgLightning
-	imgTable
-	imgTableAdd
-	imgTableDelete
-	imgTableSave
-	imgVendorCockroach
-	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)
-	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/lightning.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_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
-
-}

lexer/lexer.go

@@ -65,6 +65,15 @@ func Fields(input string) ([]string, error) {
 			} else if c == '\\' {
 				return nil, fmt.Errorf(`Unexpected \ at char %d`, pos)
 
+			} else if c == '(' || c == ')' || c == '?' || c == ',' || c == '+' || c == '*' || c == '-' || c == '/' || c == '%' || c == ';' || c == '=' {
+				// Tokenize separately, even if they appear touching another top-level token
+				// Should still be safe to re-join
+				if len(wip) != 0 {
+					ret = append(ret, wip)
+					wip = ""
+				}
+				ret = append(ret, string(c))
+
 			} else {
 				wip += string(c)
 			}

lexer/lexer_test.go

@@ -59,6 +59,24 @@ func TestLexer(t *testing.T) {
 			expectErr: false,
 		},
 
+		// Special characters lexed as separate tokens, but only at top level
+
+		testCase{
+			input:     `3+5*(2.3/6);`,
+			expect:    []string{"3", `+`, "5", "*", "(", "2.3", "/", "6", ")", ";"},
+			expectErr: false,
+		},
+		testCase{
+			input:     `SELECT "3+5*(2.3/6)" AS expression;`,
+			expect:    []string{"SELECT", `"3+5*(2.3/6)"`, "AS", "expression", ";"},
+			expectErr: false,
+		},
+		testCase{
+			input:     `INSERT INTO foo (bar, baz) VALUES (?, ?);`,
+			expect:    []string{"INSERT", "INTO", "foo", "(", "bar", ",", "baz", ")", "VALUES", "(", "?", ",", "?", ")", ";"},
+			expectErr: false,
+		},
+
 		// Errors
 
 		testCase{
@@ -99,7 +117,7 @@ func TestLexer(t *testing.T) {
 			}
 
 			if !reflect.DeepEqual(out, tc.expect) {
-				t.Errorf("Test %q got %v, expected %v", tc.input, out, tc.expect)
+				t.Errorf("Test %q\n- got:     %#v\n- expected %#v", tc.input, out, tc.expect)
 			}
 		}
 

loadedDatabase.go

@@ -3,32 +3,29 @@ 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(ndata *navData)
+	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)
-	ExecQuery(query string, resultArea *vcl.TListView)
-	NavChildren(ndata *navData) ([]string, error)
-	NavContext(ndata *navData) ([]contextAction, error)
-	Keepalive(ndata *navData)
+	RenderForNav(f *MainWindowUi, bucketPath []string) error
+	NavChildren(bucketPath []string) ([]string, error)
+	NavContext(bucketPath []string) ([]contextAction, error)
 	Close()
 }
 
-// navData is the .Data() pointer for each TTreeNode in the left-hand tree.
-type navData struct {
-	ld             loadedDatabase
-	childrenLoaded bool
-	bucketPath     []string
+type queryableLoadedDatabase interface {
+	ExecQuery(query string, resultArea *qt.QTableWidget) error
+}
+
+type editableLoadedDatabase interface {
+	ApplyChanges(f *App, bucketPath []string) error
 }

mainwindow.go

@@ -0,0 +1,355 @@
+// 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.QTableWidget
+	tabQuery                *qt.QWidget
+	verticalLayout_2        *qt.QVBoxLayout
+	splitter_2              *qt.QSplitter
+	queryInput              *qt.QTextEdit
+	queryResult             *qt.QTableWidget
+	menubar                 *qt.QMenuBar
+	menu_File               *qt.QMenu
+	menu_Query              *qt.QMenu
+	menu_Help               *qt.QMenu
+	menu_Data               *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
+}
+
+// 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.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)
+	icon10 := qt.NewQIcon()
+	icon10.AddFile4(":/assets/chart_bar.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.tabWidget.AddTab2(ui.tabProperties, icon10, "")
+	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.NewQTableWidget(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)
+	icon11 := qt.NewQIcon()
+	icon11.AddFile4(":/assets/table.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.tabWidget.AddTab2(ui.tabData, icon11, "")
+	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.NewQTextEdit(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.NewQTableWidget(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)
+	icon12 := qt.NewQIcon()
+	icon12.AddFile4(":/assets/lightning.png", qt.NewQSize(), qt.QIcon__Normal, qt.QIcon__Off)
+	ui.tabWidget.AddTab2(ui.tabQuery, icon12, "")
+	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.menubar.AddMenu(ui.menu_File)
+	ui.menubar.AddMenu(ui.menu_Data)
+	ui.menubar.AddMenu(ui.menu_Query)
+	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("yvbolt"))
+	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 yvbolt"))
+	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.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.toolBar.SetWindowTitle(qt.QMainWindow_Tr("toolBar"))
+}

mainwindow.ui

@@ -0,0 +1,355 @@
+<?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>yvbolt</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="QTableWidget" 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="QTextEdit" name="queryInput">
+            <property name="font">
+             <font>
+              <family>Monospace</family>
+             </font>
+            </property>
+           </widget>
+           <widget class="QTableWidget" 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>
+   <addaction name="menu_File"/>
+   <addaction name="menu_Data"/>
+   <addaction name="menu_Query"/>
+   <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 yvbolt</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>
+ </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.ScreenCenter()
-	f.SetWidth(320)
-	f.SetHeight(160)
-
-	// 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/eventcmd.go

@@ -0,0 +1,115 @@
+package sqliteclidriver
+
+import (
+	"io"
+	"os/exec"
+	"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 ExecEvents(cmd *exec.Cmd) (<-chan processEvent, io.WriteCloser, error) {
+
+	pw, err := cmd.StdinPipe()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	pr, err := cmd.StdoutPipe()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	pe, err := cmd.StderrPipe()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	err = cmd.Start()
+	if err != nil {
+		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
+		}
+	}
+}

sqliteclidriver/eventcmd_test.go

@@ -0,0 +1,69 @@
+package sqliteclidriver
+
+import (
+	"errors"
+	"io"
+	"os/exec"
+	"sync"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestEventCmd(t *testing.T) {
+	cmd := exec.Command("/bin/bash", "-c", `echo "hello world"`)
+
+	ch, _, err := ExecEvents(cmd)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var consume []processEvent
+	for ev := range ch {
+		consume = append(consume, ev)
+	}
+
+	expect := []processEvent{
+		processEvent{evtype: evtypeStdout, data: []byte("hello world\n")},
+		processEvent{evtype: evtypeStdout, err: io.EOF},
+		processEvent{evtype: evtypeStderr, err: io.EOF},
+		processEvent{evtype: evtypeExit, err: nil},
+	}
+
+	require.EqualValues(t, expect, consume)
+}
+
+func TestEventCmdStdin(t *testing.T) {
+	cmd := exec.Command("/usr/bin/tr", "a-z", "A-Z")
+
+	ch, pw, err := ExecEvents(cmd)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	wg := sync.WaitGroup{}
+	wg.Add(1)
+	var consume []processEvent
+	go func() {
+		defer wg.Done()
+
+		for ev := range ch {
+			if ev.err != nil && errors.Is(ev.err, io.EOF) {
+				continue // skip flakey ordering of two EOF statements
+			}
+			consume = append(consume, ev)
+		}
+	}()
+
+	pw.Write([]byte("hello world"))
+	pw.Close()
+
+	wg.Wait()
+
+	expect := []processEvent{
+		processEvent{evtype: evtypeStdout, data: []byte("HELLO WORLD")},
+		processEvent{evtype: evtypeExit, err: nil},
+	}
+
+	require.EqualValues(t, expect, consume)
+}

sqliteclidriver/orderedkv.go

@@ -0,0 +1,85 @@
+package sqliteclidriver
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+)
+
+type Pair struct {
+	Key   string
+	Value any
+}
+
+type OrderedKV []Pair
+
+func (o *OrderedKV) UnmarshalJSON(data []byte) error {
+	// Rough estimate malloc size based on number of `:`
+	// This is a lower bound since there might be nested elements
+	var elCount int64
+	for _, c := range data {
+		if c == ':' {
+			elCount += 1
+		}
+	}
+
+	*o = make([]Pair, 0, elCount)
+
+	// Parse the initial opening { delimiter from the JSON stream
+
+	reader := bytes.NewReader(data)
+	dec := json.NewDecoder(reader)
+
+	tok, err := dec.Token()
+	if err != nil {
+		return fmt.Errorf("expected '{': %w", err)
+	}
+	if d, ok := tok.(json.Delim); !ok || (rune(d) != '{') {
+		return fmt.Errorf("expected '{', got %v", tok)
+	}
+
+	// Read remaining content
+
+	for dec.More() {
+
+		var p Pair
+
+		// Parse key: either string or Delim('}')
+		tok, err := dec.Token()
+		if err != nil {
+			return fmt.Errorf("expected '{': %w", err)
+		}
+		switch tok := tok.(type) {
+		case json.Delim:
+			if rune(tok) == '}' {
+				// Finished
+				break
+			}
+			// Something else
+			return fmt.Errorf("expected string or }, got %v", tok)
+
+		case string:
+			// Valid key
+			p.Key = tok
+
+		default:
+			return fmt.Errorf("expected string or }, got %v", tok)
+		}
+
+		// Parse value (any)
+		err = dec.Decode(&p.Value)
+		if err != nil {
+			return err
+		}
+
+		*o = append(*o, p)
+	}
+
+	// Assert that there is no remaining content
+	if reader.Len() != 0 {
+		return fmt.Errorf("Unexpected trailing data (%d bytes remaining)", reader.Len())
+	}
+
+	// Done
+	return nil
+}

sqliteclidriver/orderedkv_test.go

@@ -0,0 +1,30 @@
+package sqliteclidriver
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestOrderedKV(t *testing.T) {
+
+	input := `
+{
+	"zzz": "foo",
+	"aaa": "bar"
+}
+`
+	var got OrderedKV
+	err := json.Unmarshal([]byte(input), &got)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expect := OrderedKV{
+		Pair{Key: "zzz", Value: "foo"},
+		Pair{Key: "aaa", Value: "bar"},
+	}
+
+	require.EqualValues(t, expect, got)
+}

sqliteclidriver/sqliteclidriver.go

@@ -5,7 +5,6 @@
 // Functionality is limited.
 //
 // Known caveats:
-// - Lexer only understands ? if it's separated by spaces
 // - Bad error handling
 // - Few supported types
 // - Has to escape parameters for CLI instead of preparing them, so not safe for untrusted usage
@@ -23,7 +22,10 @@ import (
 	"fmt"
 	"io"
 	"os/exec"
+
 	"yvbolt/lexer"
+
+	"github.com/google/uuid"
 )
 
 var ErrNotSupported = errors.New("Not supported")
@@ -37,29 +39,13 @@ func (d *SCDriver) Open(connectionString string) (driver.Conn, error) {
 
 	cmd := exec.Command(`/usr/bin/sqlite3`, `-noheader`, `-json`, connectionString) // n.b. doesn't support `--`
 
-	pw, err := cmd.StdinPipe()
-	if err != nil {
-		return nil, err
-	}
-
-	pr, err := cmd.StdoutPipe()
-	if err != nil {
-		return nil, err
-	}
-
-	pe, err := cmd.StderrPipe()
-	if err != nil {
-		return nil, err
-	}
-
-	err = cmd.Start()
+	chEvents, pw, err := ExecEvents(cmd)
 	if err != nil {
 		return nil, err
 	}
 
 	return &SCConn{
-		stdout: pr,
-		stderr: pe,
+		listen: chEvents,
 		w:      pw,
 	}, nil
 }
@@ -90,8 +76,7 @@ var _ driver.Connector = &SCConnector{} // interface assertion
 //
 
 type SCConn struct {
-	stdout io.Reader
-	stderr io.Reader
+	listen <-chan processEvent
 	w      io.WriteCloser
 }
 
@@ -105,6 +90,10 @@ func (c *SCConn) Prepare(query string) (driver.Stmt, error) {
 		return nil, errors.New("Empty query")
 	}
 
+	if f[len(f)-1] != ";" {
+		f = append(f, ";") // Query must end in semicolon
+	}
+
 	return &SCStmt{
 		conn:  c,
 		query: f,
@@ -216,24 +205,102 @@ func (s *SCStmt) Exec(args []driver.Value) (driver.Result, error) {
 }
 
 func (s *SCStmt) Query(args []driver.Value) (driver.Rows, error) {
+	ctx := context.Background()
 
 	submit, err := s.buildQuery(args)
 	if err != nil {
 		return nil, err
 	}
 
+	// If there are no results to the query, the sqlite3 -json mode does not
+	// print anything on stdout at all and we would hang forever
+	// Add a followup sentinel query that we can detect
+	const sentinelKey = `__sqliteclidriver_sentinel`
+	sentinelVal := uuid.Must(uuid.NewRandom()).String()
+	submit = append(submit, []byte(fmt.Sprintf("SELECT \"%s\" AS %s;\n", sentinelVal, sentinelKey))...)
+
+	//
+
 	_, err = io.CopyN(s.conn.w, bytes.NewReader(submit), int64(len(submit)))
 	if err != nil {
 		return nil, fmt.Errorf("Write: %w", err)
 	}
 
+	// Consume process events until either error or the json decoder is satisfied
+	pr, pw := io.Pipe()
+
+	listenContext, listenContextCancel := context.WithCancel(ctx) // Use to stop signalling once json decoder is satisfied
+
+	go func() {
+		defer pw.Close()
+		for {
+			select {
+			case msg, ok := <-s.conn.listen:
+				if !ok {
+					pw.CloseWithError(fmt.Errorf("process already closed"))
+					return
+				}
+				if msg.err != nil {
+					pw.CloseWithError(msg.err)
+					return
+				}
+
+				if msg.evtype == evtypeStdout {
+					_, err := io.CopyN(pw, bytes.NewReader(msg.data), int64(len(msg.data)))
+					if err != nil {
+						pw.CloseWithError(msg.err)
+						return
+					}
+
+				} else {
+					// Anything else (process event / stderr)
+					// Throw
+					pw.CloseWithError(msg)
+					return
+				}
+
+			case <-listenContext.Done():
+				return
+			}
+		}
+	}()
+
 	// We expect some kind of thing on stdout
-	ret := []map[string]any{}
-	err = json.NewDecoder(s.conn.stdout).Decode(&ret)
+	// If something happens on stderr, or to the process, pr will read an error
+	ret := []OrderedKV{}
+	decoder := json.NewDecoder(pr)
+	err = decoder.Decode(&ret)
 	if err != nil {
 		return nil, err
 	}
 
+	// Check if this was the data or the sentinel
+	wasSentinel := false
+	if len(ret) > 0 && len(ret[0]) > 0 && ret[0][0].Key == sentinelKey {
+		if check, ok := ret[0][0].Value.(string); ok && check == sentinelVal {
+			// It was the sentinel
+			wasSentinel = true
+			// Nothing more to parse
+		}
+	}
+
+	if wasSentinel {
+		// There was no data.
+		// Wipe out `ret`
+		ret = nil
+
+	} else {
+		// There was data.
+		// Need to decode again (from the same decoder reader) until we find the sentinel
+		surplus := []map[string]any{}
+		err = decoder.Decode(&surplus)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	listenContextCancel()
+
 	// Drain stderr
 	// TODO
 
@@ -243,8 +310,8 @@ func (s *SCStmt) Query(args []driver.Value) (driver.Rows, error) {
 
 	var columnNames []string
 	if len(ret) > 0 {
-		for k, _ := range ret[0] {
-			columnNames = append(columnNames, k)
+		for _, cell := range ret[0] {
+			columnNames = append(columnNames, cell.Key)
 		}
 	}
 
@@ -278,7 +345,7 @@ var _ driver.Result = &SCResult{} // interface assertion
 type SCRows struct {
 	idx     int
 	columns []string
-	data    []map[string]any
+	data    []OrderedKV
 }
 
 func (r *SCRows) Columns() []string {
@@ -301,12 +368,9 @@ func (r *SCRows) Next(dest []driver.Value) error {
 	}
 
 	for i := 0; i < len(dest); i++ {
-		cell, ok := r.data[r.idx][r.columns[i]]
-		if !ok {
-			return fmt.Errorf("Result row %d is missing column #%d %q, unexpected", r.idx, i, r.columns[i])
-		}
+		cell := r.data[r.idx][i]
 
-		dest[i] = cell
+		dest[i] = cell.Value
 	}
 
 	r.idx++

sqliteclidriver/sqliteclidriver_test.go

@@ -55,3 +55,24 @@ func TestSqliteCliDriver(t *testing.T) {
 
 	}
 }
+
+func TestSqliteCliDriverNoResults(t *testing.T) {
+	db, err := sql.Open("sqliteclidriver", ":memory:")
+	require.NoError(t, err)
+
+	// Repeat this part to ensure we can make followup queries on the same connection
+	for i := 0; i < 3; i++ {
+		_, err = db.Query(`SELECT 1 AS expect_no_result WHERE 1=2`)
+		require.NoError(t, err)
+
+		// Mix of results and no-results
+		rr := db.QueryRow(`SELECT 1 AS expect_result WHERE 1=1`)
+		require.NoError(t, rr.Err())
+
+		var result int64
+		err = rr.Scan(&result)
+		require.NoError(t, err)
+		require.EqualValues(t, result, 1)
+	}
+
+}

sshTunnel.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/mappu/autoconfig"
+	qt "github.com/mappu/miqt/qt6"
+	"golang.org/x/crypto/ssh"
+)
+
+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
+		}
+		PrivateKeyExternal *struct {
+			PrivateKeyFile         autoconfig.ExistingFile `ylabel:"Private Key"`
+			PrivateKeyFilePassword autoconfig.Password     `ylabel:"Password (optional)"`
+		} `ylabel:"Private key (External)"`
+		PrivateKeyInternal *struct {
+			PrivateKeyContent         autoconfig.MultiLineString `ylabel:"Private Key"`
+			PrivateKeyContentPassword autoconfig.Password        `ylabel:"Password (optional)"`
+		} `ylabel:"Private key (Internal)"`
+	}
+}
+
+func (s *SSHTunnel) Reset() { // Used by autoconfig package when creating a new value
+	s.Server.Port = 22
+}
+
+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
+		},
+		HostKeyCallback: ssh.InsecureIgnoreHostKey(), // FIXME
+		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))
+	}
+
+	// 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)
+}

util_types.go

@@ -1,5 +1,10 @@
 package main
 
+import (
+	"bytes"
+	"encoding/gob"
+)
+
 // box_interface creates a slice where all elements of the input slice are boxed
 // in an interface{} type.
 func box_interface[T any](input []T) []interface{} {
@@ -9,3 +14,40 @@ func box_interface[T any](input []T) []interface{} {
 	}
 	return ret
 }
+
+func slice_contains[T comparable](haystack []T, needle T) bool {
+	_, ok := slice_find(haystack, needle)
+	return ok
+}
+
+func slice_find[T comparable](haystack []T, needle T) (int, bool) {
+	for idx, v := range haystack {
+		if v == needle {
+			return idx, true
+		}
+	}
+
+	return -1, false
+}
+
+func slice_remove_index[T comparable](slice []T, s int) []T {
+	return append(slice[:s], slice[s+1:]...)
+}
+
+func pathlist_encode(bp []string) ([]byte, error) {
+	buff := bytes.Buffer{}
+	enc := gob.NewEncoder(&buff)
+	err := enc.Encode(bp)
+	if err != nil {
+		return nil, err
+	}
+
+	return buff.Bytes(), nil
+}
+
+func pathlist_decode(input []byte) ([]string, error) {
+	dec := gob.NewDecoder(bytes.NewReader(input))
+	var ret []string
+	err := dec.Decode(&ret)
+	return ret, err
+}

util_types_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestPathlistEncode(t *testing.T) {
+	// Ensure that invalid UTF-8 data is not corrupted in a pathlist encoding
+	// roundtrip
+
+	input := []string{
+		"\x00\x01\x02\x03\x04\x05\x06\x07",
+		"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7",
+		"\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7",
+		"hello",
+		"world",
+	}
+
+	buff, err := pathlist_encode(input)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ret, err := pathlist_decode(buff)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !reflect.DeepEqual(input, ret) {
+		t.Error("Mismatch")
+	}
+}

util_vcl.go

@@ -1,51 +1,37 @@
 package main
 
 import (
-	"github.com/ying32/govcl/vcl"
-	"github.com/ying32/govcl/vcl/types"
+	qt "github.com/mappu/miqt/qt6"
 )
 
-const (
-	MY_SPACING = 6
-	MY_HEIGHT  = 90
-	MY_WIDTH   = 180
-)
-
-// vcl_row makes a TPanel row inside the target component.
-func vcl_row(owner vcl.IWinControl, top int32) *vcl.TPanel {
-
-	r := vcl.NewPanel(owner)
-	r.SetParent(owner)
-	r.SetBorderStyle(types.BsNone)
-	r.SetBevelInner(types.BvNone)
-	r.SetBevelOuter(types.BvNone)
-	r.SetAlign(types.AlTop)
-	r.SetTop(top)
-	r.SetAutoSize(true)
-
-	return r
+func vcl_clear_grid(grid *qt.QTableWidget) {
+	grid.Clear()           // clears header labels
+	grid.SetColumnCount(0) // clears content
+	grid.SetRowCount(0)    // clears content
+	grid.SetEnabled(false)
 }
 
-// vcl_menuitem makes a child TMenuItem inside the parent menu.
-func vcl_menuitem(parent *vcl.TMenuItem, caption string, imageIndex int32, onClick vcl.TNotifyEvent) *vcl.TMenuItem {
-	m := vcl.NewMenuItem(parent)
-	m.SetCaption(caption)
-	if imageIndex != -1 {
-		m.SetImageIndex(imageIndex)
+func vcl_confirm_dialog(parent *qt.QWidget, title string, message string) bool {
+
+	ret := qt.QMessageBox_Question2(parent, title, message,
+		qt.QMessageBox__Apply,
+		qt.QMessageBox__Cancel)
+
+	return ret == int(qt.QMessageBox__Apply)
+}
+
+func vcl_grid_set_row_colour(grid *qt.QTableWidget, rowId int, colour *qt.QBrush) {
+
+	// Avoid triggering onCellChanged events while we update the background
+	// colours
+	if !grid.SignalsBlocked() {
+		grid.BlockSignals(true)
+		defer grid.BlockSignals(false)
 	}
-	if onClick != nil {
-		m.SetOnClick(onClick)
+
+	numCols := grid.ColumnCount()
+	for i := 0; i < numCols; i++ {
+		cell := grid.Item(rowId, i)
+		cell.SetBackground(colour)
 	}
-	parent.Add(m)
-
-	return m
-}
-
-// vcl_menuseparator adds a separator to the parent TMenuItem.
-func vcl_menuseparator(parent *vcl.TMenuItem) *vcl.TMenuItem {
-	s := vcl.NewMenuItem(parent)
-	s.SetCaption("-") // Creates separator
-	parent.Add(s)
-
-	return s
 }

versions.go

@@ -1,25 +0,0 @@
-package main
-
-import (
-	"runtime/debug"
-)
-
-var (
-	version_Pebble string
-)
-
-func init() {
-
-	// ReadBuildInfo still works even with `-ldflags '-s -w'`.
-	mm, ok := debug.ReadBuildInfo()
-	if !ok {
-		panic("Missing build info")
-	}
-
-	for _, dep := range mm.Deps {
-		switch dep.Path {
-		case "github.com/cockroachdb/pebble":
-			version_Pebble = dep.Version
-		}
-	}
-}