61 строка
1.3 KiB
C#
61 строка
1.3 KiB
C#
using System;
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using AppKit;
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namespace Xamarin.Forms.Platform.MacOS
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{
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public class SwitchRenderer : ViewRenderer<Switch, NSButton>
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{
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bool _disposed;
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IElementController ElementController => Element;
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protected override void OnElementChanged(ElementChangedEventArgs<Switch> e)
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{
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if (e.OldElement != null)
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e.OldElement.Toggled -= OnElementToggled;
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if (e.NewElement != null)
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{
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if (Control == null)
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{
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SetNativeControl(new NSButton { AllowsMixedState = false, Title = string.Empty });
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Control.SetButtonType(NSButtonType.Switch);
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Control.Activated += OnControlActivated;
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}
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UpdateState();
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e.NewElement.Toggled += OnElementToggled;
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}
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base.OnElementChanged(e);
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}
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protected override void Dispose(bool disposing)
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{
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if (disposing && !_disposed)
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{
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_disposed = true;
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if (Control != null)
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Control.Activated -= OnControlActivated;
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}
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base.Dispose(disposing);
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}
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void OnControlActivated(object sender, EventArgs e)
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{
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ElementController?.SetValueFromRenderer(Switch.IsToggledProperty, Control.State == NSCellStateValue.On);
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}
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void OnElementToggled(object sender, EventArgs e)
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{
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UpdateState();
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}
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void UpdateState()
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{
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Control.State = Element.IsToggled ? NSCellStateValue.On : NSCellStateValue.Off;
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}
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}
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} |