package main import ( "fmt" "os" "strings" "unsafe" _ "github.com/ying32/govcl/pkgs/winappres" // Extra _syso files for Windows "github.com/ying32/govcl/vcl" "github.com/ying32/govcl/vcl/types" ) const ( MY_SPACING = 6 MY_WIDTH = 180 ) type TMainForm struct { *vcl.TForm ImageList *vcl.TImageList Menu *vcl.TMainMenu Buckets *vcl.TTreeView Tabs *vcl.TPageControl propertiesBox *vcl.TMemo contentBox *vcl.TListView dbs []loadedDatabase } var ( mainForm *TMainForm ) func main() { vcl.RunApp(&mainForm) } func (f *TMainForm) OnFormCreate(sender vcl.IObject) { f.ImageList = loadImages(f) f.SetCaption("yvbolt") f.ImageList.GetIcon(imgDatabaseLightning, f.Icon()) mnuFile := vcl.NewMenuItem(f) mnuFile.SetCaption("File") mnuFileOpen := vcl.NewMenuItem(mnuFile) mnuFileOpen.SetCaption("Open Bolt database...") mnuFileOpen.SetImageIndex(imgDatabaseAdd) mnuFileOpen.SetShortCutFromString("Ctrl+O") mnuFileOpen.SetOnClick(f.OnMnuFileOpenClick) mnuFile.Add(mnuFileOpen) mnuFileSqliteOpen := vcl.NewMenuItem(mnuFile) mnuFileSqliteOpen.SetCaption("Open SQLite database...") mnuFileSqliteOpen.SetImageIndex(imgDatabaseAdd) mnuFileSqliteOpen.SetOnClick(f.OnMnuFileSqliteOpenClick) mnuFile.Add(mnuFileSqliteOpen) mnuFileSqliteMemory := vcl.NewMenuItem(mnuFile) mnuFileSqliteMemory.SetCaption("New SQLite in-memory database") mnuFileSqliteMemory.SetImageIndex(imgDatabaseAdd) mnuFileSqliteMemory.SetOnClick(f.OnMnuFileSqliteMemoryClick) mnuFile.Add(mnuFileSqliteMemory) mnuSep := vcl.NewMenuItem(mnuFile) mnuSep.SetCaption("-") // Creates separator mnuFile.Add(mnuSep) mnuFileExit := vcl.NewMenuItem(mnuFile) mnuFileExit.SetCaption("Exit") mnuFileExit.SetOnClick(f.OnMnuFileExitClick) mnuFile.Add(mnuFileExit) f.Menu = vcl.NewMainMenu(f) f.Menu.SetImages(f.ImageList) f.Menu.Items().Add(mnuFile) f.Buckets = vcl.NewTreeView(f) f.Buckets.SetParent(f) f.Buckets.SetImages(f.ImageList) f.Buckets.SetAlign(types.AlLeft) f.Buckets.SetWidth(MY_WIDTH) f.Buckets.SetReadOnly(true) // prevent click to rename on nodes f.Buckets.SetOnExpanding(f.OnNavExpanding) f.Buckets.SetOnChange(f.OnNavChange) hsplit := vcl.NewSplitter(f) hsplit.SetParent(f) hsplit.SetAlign(types.AlLeft) hsplit.SetLeft(1) // Just needs to be further "over" than f.Buckets for auto-alignment f.Tabs = vcl.NewPageControl(f) f.Tabs.SetParent(f) f.Tabs.SetAlign(types.AlClient) propertiesTab := vcl.NewTabSheet(f.Tabs) propertiesTab.SetParent(f.Tabs) propertiesTab.SetCaption("Properties") f.propertiesBox = vcl.NewMemo(propertiesTab) f.propertiesBox.SetParent(propertiesTab) f.propertiesBox.BorderSpacing().SetAround(MY_SPACING) f.propertiesBox.SetAlign(types.AlClient) // fill remaining space f.propertiesBox.SetReadOnly(true) f.propertiesBox.SetEnabled(false) f.propertiesBox.SetBorderStyle(types.BsNone) f.propertiesBox.SetText("Open a database to get started...") dataTab := vcl.NewTabSheet(f.Tabs) dataTab.SetParent(f.Tabs) dataTab.SetCaption("Data") f.contentBox = vcl.NewListView(dataTab) f.contentBox.SetParent(dataTab) f.contentBox.BorderSpacing().SetAround(MY_SPACING) f.contentBox.SetAlign(types.AlClient) // fill remaining space f.contentBox.SetViewStyle(types.VsReport) // "Report style" i.e. has columns f.contentBox.SetAutoWidthLastColumn(true) f.contentBox.SetReadOnly(true) f.contentBox.Columns().Clear() } func (f *TMainForm) OnMnuFileOpenClick(sender vcl.IObject) { dlg := vcl.NewOpenDialog(f) dlg.SetTitle("Select a database file...") dlg.SetFilter("Bolt database|*.db|All files|*.*") ret := dlg.Execute() // Fake blocking if ret { f.boltAddDatabaseFromFile(dlg.FileName()) } } func (f *TMainForm) OnMnuFileSqliteOpenClick(sender vcl.IObject) { dlg := vcl.NewOpenDialog(f) dlg.SetTitle("Select a database file...") dlg.SetFilter("SQLite database|*.db;*.db3;*.sqlite;*.sqlite3|All files|*.*") ret := dlg.Execute() // Fake blocking if ret { f.sqliteAddDatabaseFromFile(dlg.FileName()) } } func (f *TMainForm) OnMnuFileSqliteMemoryClick(sender vcl.IObject) { f.sqliteAddDatabaseFromFile(`:memory:`) } func (f *TMainForm) OnMnuFileExitClick(sender vcl.IObject) { os.Exit(0) } func (f *TMainForm) OnNavChange(sender vcl.IObject, node *vcl.TTreeNode) { if node.Data() == nil { vcl.ShowMessage("unexpected nil data") return } ndata := (*navData)(node.Data()) ndata.ld.RenderForNav(f, ndata) // Handover to the database type's own renderer function } func (f *TMainForm) OnNavExpanding(sender vcl.IObject, node *vcl.TTreeNode, allowExpansion *bool) { if node.Data() == nil { vcl.ShowMessage("unexpected nil data") *allowExpansion = false return } ndata := (*navData)(node.Data()) if ndata.childrenLoaded { return } // Find the child buckets from this point under the element nextBucketNames, err := ndata.ld.NavChildren(ndata) if err != nil { vcl.ShowMessage(fmt.Sprintf("Failed to find child buckets under %q: %s", strings.Join(ndata.bucketPath, `/`), err.Error())) *allowExpansion = false return } ndata.childrenLoaded = true // don't repeat this work if len(nextBucketNames) == 0 { node.SetHasChildren(false) *allowExpansion = false } else { // Populate LCL child nodes for _, bucketName := range nextBucketNames { node := f.Buckets.Items().AddChild(node, formatUtf8([]byte(bucketName))) node.SetHasChildren(true) // dynamically populate in OnNavExpanding navData := &navData{ ld: ndata.ld, childrenLoaded: false, // will be loaded dynamically bucketPath: []string{}, // empty = root } navData.bucketPath = append(navData.bucketPath, ndata.bucketPath...) navData.bucketPath = append(navData.bucketPath, bucketName) node.SetData(unsafe.Pointer(navData)) ndata.ld.Keepalive(navData) } *allowExpansion = true } }