func (tv TreeView) Create(builder *Builder) error {
w, err := walk.NewTreeView(builder.Parent())
if err != nil {
return err
}
return builder.InitWidget(tv, w, func() error {
if err := w.SetModel(tv.Model); err != nil {
return err
}
if tv.OnCurrentItemChanged != nil {
w.CurrentItemChanged().Attach(tv.OnCurrentItemChanged)
}
if tv.OnExpandedChanged != nil {
w.ExpandedChanged().Attach(tv.OnExpandedChanged)
}
if tv.AssignTo != nil {
*tv.AssignTo = w
}
return nil
})
}
func (tv TreeView) Create(parent walk.Container) error {
w, err := walk.NewTreeView(parent)
if err != nil {
return err
}
return InitWidget(tv, w, func() error {
if tv.AssignTo != nil {
*tv.AssignTo = w
}
return nil
})
}
func main() {
walk.Initialize(walk.InitParams{PanicOnError: true})
defer walk.Shutdown()
mainWnd, _ := walk.NewMainWindow()
mw := &MainWindow{
MainWindow: mainWnd,
fileInfoModel: &FileInfoModel{},
}
mw.SetTitle("Walk File Browser Example")
mw.SetLayout(walk.NewHBoxLayout())
fileMenu, _ := walk.NewMenu()
fileMenuAction, _ := mw.Menu().Actions().AddMenu(fileMenu)
fileMenuAction.SetText("&File")
exitAction := walk.NewAction()
exitAction.SetText("E&xit")
exitAction.Triggered().Attach(func() { walk.App().Exit(0) })
fileMenu.Actions().Add(exitAction)
helpMenu, _ := walk.NewMenu()
helpMenuAction, _ := mw.Menu().Actions().AddMenu(helpMenu)
helpMenuAction.SetText("&Help")
aboutAction := walk.NewAction()
aboutAction.SetText("&About")
aboutAction.Triggered().Attach(func() {
walk.MsgBox(mw, "About", "Walk File Browser Example", walk.MsgBoxOK|walk.MsgBoxIconInformation)
})
helpMenu.Actions().Add(aboutAction)
splitter, _ := walk.NewSplitter(mw)
mw.treeView, _ = walk.NewTreeView(splitter)
mw.treeView.ItemExpanded().Attach(func(item *walk.TreeViewItem) {
children := item.Children()
if children.Len() == 1 && children.At(0).Text() == "" {
mw.populateTreeViewItem(item)
}
})
mw.treeView.SelectionChanged().Attach(func(old, new *walk.TreeViewItem) {
mw.selTvwItem = new
mw.showError(mw.fileInfoModel.ResetRows(pathForTreeViewItem(new)))
})
drives, _ := walk.DriveNames()
mw.treeView.SetSuspended(true)
for _, drive := range drives {
driveItem := newTreeViewItem(drive[:2])
mw.treeView.Items().Add(driveItem)
}
mw.treeView.SetSuspended(false)
mw.tableView, _ = walk.NewTableView(splitter)
mw.tableView.SetModel(mw.fileInfoModel)
mw.tableView.SetSingleItemSelection(true)
mw.tableView.CurrentIndexChanged().Attach(func() {
var url string
index := mw.tableView.CurrentIndex()
if index > -1 {
name := mw.fileInfoModel.items[index].Name
url = path.Join(pathForTreeViewItem(mw.selTvwItem), name)
}
mw.preview.SetURL(url)
})
mw.preview, _ = walk.NewWebView(splitter)
mw.SetMinMaxSize(walk.Size{600, 400}, walk.Size{})
mw.SetSize(walk.Size{800, 600})
mw.Show()
mw.Run()
}