diff options
Diffstat (limited to 'Xamarin.Forms.Platform.iOS/Renderers/StepperRenderer.cs')
-rw-r--r-- | Xamarin.Forms.Platform.iOS/Renderers/StepperRenderer.cs | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.iOS/Renderers/StepperRenderer.cs b/Xamarin.Forms.Platform.iOS/Renderers/StepperRenderer.cs new file mode 100644 index 00000000..0cb0fcb7 --- /dev/null +++ b/Xamarin.Forms.Platform.iOS/Renderers/StepperRenderer.cs @@ -0,0 +1,82 @@ +using System; +using System.Drawing; +using System.ComponentModel; +#if __UNIFIED__ +using UIKit; + +#else +using MonoTouch.UIKit; +#endif + +namespace Xamarin.Forms.Platform.iOS +{ + public class StepperRenderer : ViewRenderer<Stepper, UIStepper> + { + protected override void Dispose(bool disposing) + { + if (Control != null) + Control.ValueChanged -= OnValueChanged; + + base.Dispose(disposing); + } + + protected override void OnElementChanged(ElementChangedEventArgs<Stepper> e) + { + if (e.NewElement != null) + { + if (Control == null) + { + SetNativeControl(new UIStepper(RectangleF.Empty)); + Control.ValueChanged += OnValueChanged; + } + + UpdateMinimum(); + UpdateMaximum(); + UpdateValue(); + UpdateIncrement(); + } + + base.OnElementChanged(e); + } + + protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e) + { + base.OnElementPropertyChanged(sender, e); + + if (e.PropertyName == Stepper.MinimumProperty.PropertyName) + UpdateMinimum(); + else if (e.PropertyName == Stepper.MaximumProperty.PropertyName) + UpdateMaximum(); + else if (e.PropertyName == Stepper.ValueProperty.PropertyName) + UpdateValue(); + else if (e.PropertyName == Stepper.IncrementProperty.PropertyName) + UpdateIncrement(); + } + + void OnValueChanged(object sender, EventArgs e) + { + ((IElementController)Element).SetValueFromRenderer(Stepper.ValueProperty, Control.Value); + } + + void UpdateIncrement() + { + Control.StepValue = Element.Increment; + } + + void UpdateMaximum() + { + Control.MaximumValue = Element.Maximum; + } + + void UpdateMinimum() + { + Control.MinimumValue = Element.Minimum; + } + + void UpdateValue() + { + if (Control.Value != Element.Value) + Control.Value = Element.Value; + } + } +}
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