func (b *Builder) InitWidget(d Widget, w walk.Window, customInit func() error) error {
b.level++
defer func() {
b.level--
}()
var succeeded bool
defer func() {
if !succeeded {
w.Dispose()
}
}()
b.declWidgets = append(b.declWidgets, declWidget{d, w})
// Widget
name, _, _, font, toolTipText, minSize, maxSize, stretchFactor, row, rowSpan, column, columnSpan, alwaysConsumeSpace, contextMenuItems, onKeyDown, onKeyPress, onKeyUp, onMouseDown, onMouseMove, onMouseUp, onSizeChanged := d.WidgetInfo()
w.SetName(name)
if name != "" {
b.name2Window[name] = w
}
if toolTipText != "" {
if widget, ok := w.(walk.Widget); ok {
if err := widget.SetToolTipText(toolTipText); err != nil {
return err
}
}
}
if err := w.SetMinMaxSize(minSize.toW(), maxSize.toW()); err != nil {
return err
}
if len(contextMenuItems) > 0 {
cm, err := walk.NewMenu()
if err != nil {
return err
}
b.deferBuildMenuActions(cm, contextMenuItems)
w.SetContextMenu(cm)
}
if onKeyDown != nil {
w.KeyDown().Attach(onKeyDown)
}
if onKeyPress != nil {
w.KeyPress().Attach(onKeyPress)
}
if onKeyUp != nil {
w.KeyUp().Attach(onKeyUp)
}
if onMouseDown != nil {
w.MouseDown().Attach(onMouseDown)
}
if onMouseMove != nil {
w.MouseMove().Attach(onMouseMove)
}
if onMouseUp != nil {
w.MouseUp().Attach(onMouseUp)
}
if onSizeChanged != nil {
w.SizeChanged().Attach(onSizeChanged)
}
if widget, ok := w.(walk.Widget); ok {
if err := widget.SetAlwaysConsumeSpace(alwaysConsumeSpace); err != nil {
return err
}
if p := widget.Parent(); p != nil {
switch l := p.Layout().(type) {
case *walk.BoxLayout:
if stretchFactor < 1 {
stretchFactor = 1
}
if err := l.SetStretchFactor(widget, stretchFactor); err != nil {
return err
}
case *walk.GridLayout:
if rowSpan < 1 {
rowSpan = 1
}
if columnSpan < 1 {
columnSpan = 1
}
if b.columns > 0 && row == 0 && column == 0 {
if b.col+columnSpan > b.columns {
b.row++
b.col = 0
}
row = b.row
column = b.col
b.col += columnSpan
}
r := walk.Rectangle{column, row, columnSpan, rowSpan}
if err := l.SetRange(widget, r); err != nil {
return err
}
}
}
}
oldParent := b.parent
// Container
var db *walk.DataBinder
if dc, ok := d.(Container); ok {
if wc, ok := w.(walk.Container); ok {
dataBinder, layout, children := dc.ContainerInfo()
if layout != nil {
l, err := layout.Create()
if err != nil {
return err
}
if err := wc.SetLayout(l); err != nil {
return err
}
}
b.parent = wc
defer func() {
b.parent = oldParent
}()
if g, ok := layout.(Grid); ok {
columns := b.columns
defer func() {
b.columns, b.row, b.col = columns, row, column+columnSpan
}()
b.columns = g.Columns
b.row = 0
b.col = 0
}
for _, child := range children {
if err := child.Create(b); err != nil {
return err
}
}
if dataBinder.AssignTo != nil || dataBinder.DataSource != nil {
if dataB, err := dataBinder.create(); err != nil {
return err
} else {
db = dataB
}
}
}
}
// Custom
if customInit != nil {
if err := customInit(); err != nil {
return err
}
}
b.parent = oldParent
// Widget continued
if font != nil {
if f, err := font.Create(); err != nil {
return err
} else if f != nil {
w.SetFont(f)
}
}
if b.level == 1 {
if err := b.initProperties(); err != nil {
return err
}
}
// Call Reset on DataBinder after customInit, so a Dialog gets a chance to first
// wire up its DefaultButton to the CanSubmitChanged event of a DataBinder.
if db != nil {
if _, ok := d.(Container); ok {
if wc, ok := w.(walk.Container); ok {
b.Defer(func() error {
// FIXME: Currently SetDataBinder must be called after initProperties.
wc.SetDataBinder(db)
if db.DataSource() == nil {
return nil
}
return db.Reset()
})
}
}
}
if b.level == 1 {
for _, f := range b.deferredFuncs {
if err := f(); err != nil {
return err
}
}
}
succeeded = true
return nil
}
func (d Dialog) Create(owner walk.Form) error {
w, err := walk.NewDialog(owner)
if err != nil {
return err
}
tlwi := topLevelWindowInfo{
Name: d.Name,
Font: d.Font,
ToolTipText: "",
MinSize: d.MinSize,
MaxSize: d.MaxSize,
ContextMenuItems: d.ContextMenuItems,
DataBinder: d.DataBinder,
Layout: d.Layout,
Children: d.Children,
OnKeyDown: d.OnKeyDown,
OnKeyPress: d.OnKeyPress,
OnKeyUp: d.OnKeyUp,
OnMouseDown: d.OnMouseDown,
OnMouseMove: d.OnMouseMove,
OnMouseUp: d.OnMouseUp,
OnSizeChanged: d.OnSizeChanged,
}
var db *walk.DataBinder
if d.DataBinder.AssignTo == nil {
d.DataBinder.AssignTo = &db
}
builder := NewBuilder(nil)
w.SetSuspended(true)
builder.Defer(func() error {
w.SetSuspended(false)
return nil
})
return builder.InitWidget(tlwi, w, func() error {
if err := w.SetTitle(d.Title); err != nil {
return err
}
if err := w.SetSize(d.Size.toW()); err != nil {
return err
}
if d.DefaultButton != nil {
if err := w.SetDefaultButton(*d.DefaultButton); err != nil {
return err
}
if db := *d.DataBinder.AssignTo; db != nil {
(*d.DefaultButton).SetEnabled(db.CanSubmit())
db.CanSubmitChanged().Attach(func() {
(*d.DefaultButton).SetEnabled(db.CanSubmit())
})
}
}
if d.CancelButton != nil {
if err := w.SetCancelButton(*d.CancelButton); err != nil {
return err
}
}
if d.AssignTo != nil {
*d.AssignTo = w
}
return nil
})
}