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// Copyright 2012 The Walk Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package declarative
import (
"fmt"
)
import (
"strconv"
"github.com/lxn/walk"
)
type Shortcut struct {
Modifiers walk.Modifiers
Key walk.Key
}
type Action struct {
AssignTo **walk.Action
Text string
Image interface{}
Checked Property
Enabled Property
Visible Property
Shortcut Shortcut
OnTriggered walk.EventHandler
Checkable bool
}
func (a Action) createAction(builder *Builder, menu *walk.Menu) (*walk.Action, error) {
action := walk.NewAction()
if a.AssignTo != nil {
*a.AssignTo = action
}
if err := action.SetText(a.Text); err != nil {
return nil, err
}
if err := setActionImage(action, a.Image); err != nil {
return nil, err
}
if err := setActionBoolOrCondition(action.SetChecked, action.SetCheckedCondition, a.Checked, "Action.Checked", builder); err != nil {
return nil, err
}
if err := setActionBoolOrCondition(action.SetEnabled, action.SetEnabledCondition, a.Enabled, "Action.Enabled", builder); err != nil {
return nil, err
}
if err := setActionBoolOrCondition(action.SetVisible, action.SetVisibleCondition, a.Visible, "Action.Visible", builder); err != nil {
return nil, err
}
if err := action.SetCheckable(a.Checkable || action.CheckedCondition() != nil); err != nil {
return nil, err
}
s := a.Shortcut
if err := action.SetShortcut(walk.Shortcut{s.Modifiers, s.Key}); err != nil {
return nil, err
}
if a.OnTriggered != nil {
action.Triggered().Attach(a.OnTriggered)
}
if menu != nil {
if err := menu.Actions().Add(action); err != nil {
return nil, err
}
}
return action, nil
}
type ActionRef struct {
Action **walk.Action
}
func (ar ActionRef) createAction(builder *Builder, menu *walk.Menu) (*walk.Action, error) {
if menu != nil {
if err := menu.Actions().Add(*ar.Action); err != nil {
return nil, err
}
}
return *ar.Action, nil
}
type Menu struct {
AssignTo **walk.Menu
AssignActionTo **walk.Action
Text string
Image interface{}
Enabled Property
Visible Property
Items []MenuItem
OnTriggered walk.EventHandler
}
func (m Menu) createAction(builder *Builder, menu *walk.Menu) (*walk.Action, error) {
subMenu, err := walk.NewMenu()
if err != nil {
return nil, err
}
var action *walk.Action
if menu == nil {
action = walk.NewMenuAction(subMenu)
} else if action, err = menu.Actions().AddMenu(subMenu); err != nil {
return nil, err
}
if err := action.SetText(m.Text); err != nil {
return nil, err
}
if err := setActionImage(action, m.Image); err != nil {
return nil, err
}
if err := setActionBoolOrCondition(action.SetEnabled, action.SetEnabledCondition, m.Enabled, "Menu.Enabled", builder); err != nil {
return nil, err
}
if err := setActionBoolOrCondition(action.SetVisible, action.SetVisibleCondition, m.Visible, "Menu.Visible", builder); err != nil {
return nil, err
}
for _, item := range m.Items {
if _, err := item.createAction(builder, subMenu); err != nil {
return nil, err
}
}
if m.OnTriggered != nil {
action.Triggered().Attach(m.OnTriggered)
}
if m.AssignActionTo != nil {
*m.AssignActionTo = action
}
if m.AssignTo != nil {
*m.AssignTo = subMenu
}
return action, nil
}
type Separator struct {
}
func (s Separator) createAction(builder *Builder, menu *walk.Menu) (*walk.Action, error) {
action := walk.NewSeparatorAction()
if menu != nil {
if err := menu.Actions().Add(action); err != nil {
return nil, err
}
}
return action, nil
}
func addToActionList(list *walk.ActionList, actions []*walk.Action) error {
for _, a := range actions {
if err := list.Add(a); err != nil {
return err
}
}
return nil
}
func setActionImage(action *walk.Action, image interface{}) (err error) {
var bm *walk.Bitmap
switch image := image.(type) {
case nil:
return nil
case *walk.Bitmap:
bm = image
case int:
var err error
if bm, err = walk.Resources.Bitmap(strconv.Itoa(image)); err != nil {
return err
}
case string:
if bm, err = walk.Resources.Bitmap(image); err != nil {
return
}
default:
return walk.ErrInvalidType
}
return action.SetImage(bm)
}
func setActionBoolOrCondition(setBool func(bool) error, setCond func(walk.Condition), value Property, path string, builder *Builder) error {
if value != nil {
if b, ok := value.(bool); ok {
if err := setBool(b); err != nil {
return err
}
} else if s := builder.conditionOrProperty(value); s != nil {
if c, ok := s.(walk.Condition); ok {
setCond(c)
} else {
return fmt.Errorf("value of invalid type bound to %s: %T", path, s)
}
}
}
return nil
}
|
