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//
// MenuItemBackend.cs
//
// Author:
// Carlos Alberto Cortez <calberto.cortez@gmail.com>
// Eric Maupin <ermau@xamarin.com>
//
// Copyright (c) 2011 Carlos Alberto Cortez
// Copyright (c) 2012 Xamarin, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using SWC = System.Windows.Controls;
using SWMI = System.Windows.Media.Imaging;
using Xwt.Backends;
namespace Xwt.WPFBackend
{
public class MenuItemBackend : Backend, IMenuItemBackend
{
UIElement item;
SWC.MenuItem menuItem;
MenuBackend subMenu;
MenuItemType type;
IMenuItemEventSink eventSink;
string label;
bool useMnemonic;
public MenuItemBackend ()
: this (new SWC.MenuItem())
{
}
protected MenuItemBackend (UIElement item)
{
this.item = item;
this.menuItem = item as SWC.MenuItem;
useMnemonic = true;
}
public void Initialize (IMenuItemEventSink eventSink)
{
this.eventSink = eventSink;
}
public object Item {
get { return this.item; }
}
public SWC.MenuItem MenuItem {
get { return this.menuItem; }
}
public IMenuItemEventSink EventSink {
get { return eventSink; }
}
public bool Checked {
get {
if (this.menuItem == null)
return false;
return this.menuItem.IsCheckable && this.menuItem.IsChecked; }
set {
if (this.menuItem == null || !this.menuItem.IsCheckable)
return;
this.menuItem.IsChecked = value;
}
}
public string Label {
get { return label; }
set {
label = value;
if (this.menuItem != null)
menuItem.Header = UseMnemonic ? value : value.Replace ("_", "__");
}
}
public bool UseMnemonic {
get { return useMnemonic; }
set
{
useMnemonic = value;
Label = label;
}
}
public bool Sensitive {
get { return this.item.IsEnabled; }
set { this.item.IsEnabled = value; }
}
public bool Visible {
get { return this.item.IsVisible; }
set { this.item.Visibility = (value) ? Visibility.Visible : Visibility.Collapsed; }
}
public void SetImage (ImageDescription imageBackend)
{
if (imageBackend.IsNull)
this.menuItem.Icon = null;
else
this.menuItem.Icon = new ImageBox (Context) { ImageSource = imageBackend };
}
public void SetSubmenu (IMenuBackend menu)
{
if (menu == null) {
this.menuItem.Items.Clear ();
if (subMenu != null) {
subMenu.RemoveFromParentItem ();
subMenu = null;
}
return;
}
var menuBackend = (MenuBackend)menu;
menuBackend.RemoveFromParentItem ();
foreach (var itemBackend in menuBackend.Items)
this.menuItem.Items.Add (itemBackend.Item);
menuBackend.ParentItem = this;
subMenu = menuBackend;
}
public void SetType (MenuItemType type)
{
switch (type) {
case MenuItemType.RadioButton:
case MenuItemType.CheckBox:
this.menuItem.IsCheckable = true;
break;
case MenuItemType.Normal:
this.menuItem.IsCheckable = false;
break;
}
this.type = type;
}
internal void SetFont (FontData font)
{
MenuItem.FontFamily = font.Family;
MenuItem.FontSize = font.GetDeviceIndependentPixelSize(MenuItem);
MenuItem.FontStyle = font.Style;
MenuItem.FontWeight = font.Weight;
MenuItem.FontStretch = font.Stretch;
}
public override void EnableEvent (object eventId)
{
if (menuItem == null)
return;
if (eventId is MenuItemEvent) {
switch ((MenuItemEvent)eventId) {
case MenuItemEvent.Clicked:
this.menuItem.Click += MenuItemClickHandler;
break;
}
}
}
public override void DisableEvent (object eventId)
{
if (menuItem == null)
return;
if (eventId is MenuItemEvent) {
switch ((MenuItemEvent)eventId) {
case MenuItemEvent.Clicked:
this.menuItem.Click -= MenuItemClickHandler;
break;
}
}
}
void MenuItemClickHandler (object sender, EventArgs args)
{
Context.InvokeUserCode (eventSink.OnClicked);
}
}
}
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