136 строки
3.4 KiB
C#
136 строки
3.4 KiB
C#
//
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// CheckBoxBackend.cs
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//
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// Author:
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// Eric Maupin <ermau@xamarin.com>
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//
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// Copyright (c) 2012 Xamarin, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.Windows;
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using System.Windows.Controls;
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using Xwt.Backends;
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using WindowsCheckBox = System.Windows.Controls.CheckBox;
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namespace Xwt.WPFBackend
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{
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public class CheckBoxBackend
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: WidgetBackend, ICheckBoxBackend
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{
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public CheckBoxBackend()
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{
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Widget = new WindowsCheckBox ();
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}
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public void SetContent (IWidgetBackend widget)
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{
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if (widget == null)
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CheckBox.Content = null;
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else
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CheckBox.Content = widget.NativeWidget;
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}
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public void SetContent (string label)
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{
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CheckBox.Content = new TextBlock { Text = label };
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}
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public CheckBoxState State
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{
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get {
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if (!CheckBox.IsChecked.HasValue)
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return CheckBoxState.Mixed;
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else if (CheckBox.IsChecked.Value)
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return CheckBoxState.On;
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else
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return CheckBoxState.Off;
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}
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set {
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if (value == CheckBoxState.Mixed)
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CheckBox.IsChecked = null;
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else
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CheckBox.IsChecked = value == CheckBoxState.On;
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}
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}
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public bool AllowMixed
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{
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get { return CheckBox.IsThreeState; }
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set { CheckBox.IsThreeState = value; }
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}
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public override void EnableEvent (object eventId)
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{
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base.EnableEvent (eventId);
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if (eventId is CheckBoxEvent) {
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switch ((CheckBoxEvent)eventId) {
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case CheckBoxEvent.Clicked:
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CheckBox.Click += OnClicked;
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break;
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case CheckBoxEvent.Toggled:
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CheckBox.Checked += OnChecked;
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CheckBox.Unchecked += OnChecked;
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break;
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}
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}
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}
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public override void DisableEvent (object eventId)
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{
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base.DisableEvent (eventId);
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if (eventId is CheckBoxEvent) {
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switch ((CheckBoxEvent)eventId) {
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case CheckBoxEvent.Clicked:
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CheckBox.Click -= OnClicked;
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break;
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case CheckBoxEvent.Toggled:
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CheckBox.Checked -= OnChecked;
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CheckBox.Unchecked -= OnChecked;
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break;
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}
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}
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}
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private void OnChecked (object sender, RoutedEventArgs routedEventArgs)
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{
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Context.InvokeUserCode (CheckBoxEventSink.OnToggled);
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}
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private void OnClicked (object sender, RoutedEventArgs e)
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{
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Context.InvokeUserCode (CheckBoxEventSink.OnClicked);
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}
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protected ICheckBoxEventSink CheckBoxEventSink
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{
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get { return (ICheckBoxEventSink) EventSink; }
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}
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protected WindowsCheckBox CheckBox
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{
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get { return (WindowsCheckBox) Widget; }
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}
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}
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}
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