summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs
diff options
context:
space:
mode:
Diffstat (limited to 'Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs')
-rw-r--r--Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs92
1 files changed, 92 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs b/Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs
new file mode 100644
index 00000000..f243c634
--- /dev/null
+++ b/Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs
@@ -0,0 +1,92 @@
+using System;
+using Android.Support.V7.Widget;
+using Android.Widget;
+
+namespace Xamarin.Forms.Platform.Android.AppCompat
+{
+ public class SwitchRenderer : ViewRenderer<Switch, SwitchCompat>, CompoundButton.IOnCheckedChangeListener
+ {
+ bool _disposed;
+
+ public SwitchRenderer()
+ {
+ AutoPackage = false;
+ }
+
+ void CompoundButton.IOnCheckedChangeListener.OnCheckedChanged(CompoundButton buttonView, bool isChecked)
+ {
+ ((IViewController)Element).SetValueFromRenderer(Switch.IsToggledProperty, isChecked);
+ }
+
+ public override SizeRequest GetDesiredSize(int widthConstraint, int heightConstraint)
+ {
+ SizeRequest sizeConstraint = base.GetDesiredSize(widthConstraint, heightConstraint);
+
+ if (sizeConstraint.Request.Width == 0)
+ {
+ int width = widthConstraint;
+ if (widthConstraint <= 0)
+ width = (int)Context.GetThemeAttributeDp(global::Android.Resource.Attribute.SwitchMinWidth);
+ else if (widthConstraint <= 0)
+ width = 100;
+
+ sizeConstraint = new SizeRequest(new Size(width, sizeConstraint.Request.Height), new Size(width, sizeConstraint.Minimum.Height));
+ }
+
+ return sizeConstraint;
+ }
+
+ protected override SwitchCompat CreateNativeControl()
+ {
+ return new SwitchCompat(Context);
+ }
+
+ protected override void Dispose(bool disposing)
+ {
+ if (disposing && !_disposed)
+ {
+ _disposed = true;
+
+ if (Element != null)
+ Element.Toggled -= HandleToggled;
+
+ Control.SetOnCheckedChangeListener(null);
+ }
+
+ base.Dispose(disposing);
+ }
+
+ protected override void OnElementChanged(ElementChangedEventArgs<Switch> e)
+ {
+ base.OnElementChanged(e);
+
+ if (e.OldElement != null)
+ e.OldElement.Toggled -= HandleToggled;
+
+ if (e.NewElement != null)
+ {
+ if (Control == null)
+ {
+ SwitchCompat aswitch = CreateNativeControl();
+ aswitch.SetOnCheckedChangeListener(this);
+ SetNativeControl(aswitch);
+ }
+ else
+ UpdateEnabled(); // Normally set by SetNativeControl, but not when the Control is reused.
+
+ e.NewElement.Toggled += HandleToggled;
+ Control.Checked = e.NewElement.IsToggled;
+ }
+ }
+
+ void HandleToggled(object sender, EventArgs e)
+ {
+ Control.Checked = Element.IsToggled;
+ }
+
+ void UpdateEnabled()
+ {
+ Control.Enabled = Element.IsEnabled;
+ }
+ }
+} \ No newline at end of file