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//
// RadioButtonBackend.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2013 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 Xwt.Backends;
namespace Xwt.GtkBackend
{
public class RadioButtonBackend: WidgetBackend, IRadioButtonBackend
{
RadioGroup radioGroup;
public RadioButtonBackend ()
{
}
public override void Initialize ()
{
NeedsEventBox = false;
Widget = new Gtk.RadioButton ("");
Widget.Show ();
}
protected new Gtk.RadioButton Widget {
get { return (Gtk.RadioButton)base.Widget; }
set { base.Widget = value; }
}
protected new IRadioButtonEventSink EventSink {
get { return (IRadioButtonEventSink)base.EventSink; }
}
public override object Font {
get {
return base.Font;
}
set {
var fd = (Pango.FontDescription) value;
foreach (var c in Widget.Children)
c.ModifyFont (fd);
}
}
protected override void OnSetBackgroundColor (Xwt.Drawing.Color color)
{
base.OnSetBackgroundColor (color);
Widget.SetBackgroundColor (color);
Widget.SetChildBackgroundColor (color);
EventsRootWidget.SetBackgroundColor (color);
}
public override void EnableEvent (object eventId)
{
base.EnableEvent (eventId);
if (eventId is RadioButtonEvent) {
switch ((RadioButtonEvent)eventId) {
case RadioButtonEvent.ActiveChanged: Widget.Toggled += HandleToggled; break;
case RadioButtonEvent.Clicked: Widget.Clicked += HandleClicked;; break;
}
}
}
public override void DisableEvent (object eventId)
{
if (eventId is RadioButtonEvent) {
switch ((RadioButtonEvent)eventId) {
case RadioButtonEvent.ActiveChanged: Widget.Toggled -= HandleToggled; break;
case RadioButtonEvent.Clicked: Widget.Clicked -= HandleClicked;; break;
}
}
}
void HandleClicked (object sender, EventArgs e)
{
ApplicationContext.InvokeUserCode (EventSink.OnClicked);
}
void HandleToggled (object sender, EventArgs e)
{
ApplicationContext.InvokeUserCode (EventSink.OnToggled);
}
#region IRadioButtonBackend implementation
public void SetContent (IWidgetBackend widget)
{
var w = (WidgetBackend)widget;
if (Widget.Children.Length > 0)
Widget.Remove (Widget.Children [0]);
if (w != null)
Widget.Add (w.Widget);
}
public void SetContent (string label)
{
Widget.Label = label;
}
class RadioGroup
{
public Gtk.RadioButton Group;
public Gtk.RadioButton NullRadio;
}
public object Group {
get {
if (radioGroup == null)
radioGroup = new RadioGroup () { Group = Widget };
return radioGroup;
}
set {
var g = (RadioGroup)value;
if (g != radioGroup) {
Widget.Group = g.Group.Group;
radioGroup = g;
}
}
}
public bool Active {
get {
return Widget.Active;
}
set {
if (Widget.Active && !value) {
var g = (RadioGroup) Group;
if (g.NullRadio == null)
g.NullRadio = new Gtk.RadioButton (g.Group);
g.NullRadio.Active = true;
} else
Widget.Active = value;
}
}
#endregion
}
}
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