func RunAnimalDialog(owner walk.Form, animal *Animal) (int, error) {
var dlg *walk.Dialog
var db *walk.DataBinder
var ep walk.ErrorPresenter
var acceptPB, cancelPB *walk.PushButton
return Dialog{
AssignTo: &dlg,
Title: "Animal Details",
DefaultButton: &acceptPB,
CancelButton: &cancelPB,
DataBinder: DataBinder{
AssignTo: &db,
DataSource: animal,
ErrorPresenter: ErrorPresenterRef{&ep},
},
MinSize: Size{300, 300},
Layout: VBox{},
Children: []Widget{
Composite{
Layout: Grid{Columns: 2},
Children: []Widget{
Label{
Text: "Name:",
},
LineEdit{
Text: Bind("Name"),
},
Label{
Text: "Arrival Date:",
},
DateEdit{
Date: Bind("ArrivalDate"),
},
Label{
Text: "Species:",
},
ComboBox{
Value: Bind("SpeciesId", SelRequired{}),
BindingMember: "Id",
DisplayMember: "Name",
Model: KnownSpecies(),
},
RadioButtonGroupBox{
ColumnSpan: 2,
Title: "Sex",
Layout: HBox{},
DataMember: "Sex",
Buttons: []RadioButton{
{Text: "Male", Value: SexMale},
{Text: "Female", Value: SexFemale},
{Text: "Hermaphrodite", Value: SexHermaphrodite},
},
},
Label{
Text: "Weight:",
},
NumberEdit{
Value: Bind("Weight", Range{0.01, 9999.99}),
Suffix: " kg",
Decimals: 2,
},
Label{
Text: "Preferred Food:",
},
ComboBox{
Editable: true,
Value: Bind("PreferredFood"),
Model: []string{"Fruit", "Grass", "Fish", "Meat"},
},
Label{
Text: "Domesticated:",
},
CheckBox{
Checked: Bind("Domesticated"),
},
VSpacer{
ColumnSpan: 2,
Size: 8,
},
Label{
ColumnSpan: 2,
Text: "Remarks:",
},
TextEdit{
ColumnSpan: 2,
MinSize: Size{100, 50},
Text: Bind("Remarks"),
},
LineErrorPresenter{
AssignTo: &ep,
ColumnSpan: 2,
},
},
},
Composite{
Layout: HBox{},
Children: []Widget{
HSpacer{},
PushButton{
AssignTo: &acceptPB,
Text: "OK",
OnClicked: func() {
if err := db.Submit(); err != nil {
log.Print(err)
return
}
dlg.Accept()
},
},
PushButton{
AssignTo: &cancelPB,
Text: "Cancel",
OnClicked: func() { dlg.Cancel() },
},
},
},
},
}.Run(owner)
}
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
})
}
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, 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 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
}
}
var err error
if db, err = dataBinder.create(); err != nil {
return err
}
}
}
// 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)
return db.Reset()
})
}
}
}
if b.level == 1 {
for _, f := range b.deferredFuncs {
if err := f(); err != nil {
return err
}
}
}
succeeded = true
return nil
}