summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs
diff options
context:
space:
mode:
Diffstat (limited to 'Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs')
-rw-r--r--Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs94
1 files changed, 94 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs
new file mode 100644
index 00000000..70eed60b
--- /dev/null
+++ b/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs
@@ -0,0 +1,94 @@
+using System.ComponentModel;
+using Android.Views;
+using Android.Widget;
+using Java.Lang;
+using AButton = Android.Widget.Button;
+
+namespace Xamarin.Forms.Platform.Android
+{
+ public class StepperRenderer : ViewRenderer<Stepper, LinearLayout>
+ {
+ AButton _downButton;
+ AButton _upButton;
+
+ public StepperRenderer()
+ {
+ AutoPackage = false;
+ }
+
+ protected override void OnElementChanged(ElementChangedEventArgs<Stepper> e)
+ {
+ base.OnElementChanged(e);
+
+ if (e.OldElement == null)
+ {
+ _downButton = new AButton(Context) { Text = "-", Gravity = GravityFlags.Center, Tag = this };
+
+ _downButton.SetOnClickListener(StepperListener.Instance);
+
+ _upButton = new AButton(Context) { Text = "+", Tag = this };
+
+ _upButton.SetOnClickListener(StepperListener.Instance);
+ _upButton.SetHeight((int)Context.ToPixels(10.0));
+
+ var layout = new LinearLayout(Context) { Orientation = Orientation.Horizontal };
+
+ layout.AddView(_downButton);
+ layout.AddView(_upButton);
+
+ SetNativeControl(layout);
+ }
+
+ UpdateButtonEnabled();
+ }
+
+ protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+ {
+ base.OnElementPropertyChanged(sender, e);
+
+ switch (e.PropertyName)
+ {
+ case "Minimum":
+ UpdateButtonEnabled();
+ break;
+ case "Maximum":
+ UpdateButtonEnabled();
+ break;
+ case "Value":
+ UpdateButtonEnabled();
+ break;
+ case "IsEnabled":
+ UpdateButtonEnabled();
+ break;
+ }
+ }
+
+ void UpdateButtonEnabled()
+ {
+ Stepper view = Element;
+ _upButton.Enabled = view.IsEnabled ? view.Value < view.Maximum : view.IsEnabled;
+ _downButton.Enabled = view.IsEnabled ? view.Value > view.Minimum : view.IsEnabled;
+ }
+
+ class StepperListener : Object, IOnClickListener
+ {
+ public static readonly StepperListener Instance = new StepperListener();
+
+ public void OnClick(global::Android.Views.View v)
+ {
+ var renderer = v.Tag as StepperRenderer;
+ if (renderer == null)
+ return;
+
+ Stepper stepper = renderer.Element;
+ if (stepper == null)
+ return;
+
+ if (v == renderer._upButton)
+ ((IElementController)stepper).SetValueFromRenderer(Stepper.ValueProperty, stepper.Value + stepper.Increment);
+ else if (v == renderer._downButton)
+ ((IElementController)stepper).SetValueFromRenderer(Stepper.ValueProperty, stepper.Value - stepper.Increment);
+ }
+ }
+ }
+} \ No newline at end of file