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Diffstat (limited to 'Xamarin.Forms.Platform.WinRT/DatePickerRenderer.cs')
-rw-r--r--Xamarin.Forms.Platform.WinRT/DatePickerRenderer.cs97
1 files changed, 97 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT/DatePickerRenderer.cs b/Xamarin.Forms.Platform.WinRT/DatePickerRenderer.cs
new file mode 100644
index 00000000..23f134f2
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/DatePickerRenderer.cs
@@ -0,0 +1,97 @@
+´╗┐using System;
+using System.ComponentModel;
+using Windows.UI.Xaml.Controls;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+ public class DatePickerRenderer : ViewRenderer<DatePicker, FormsDatePicker>, IWrapperAware
+ {
+ public void NotifyWrapped()
+ {
+ if (Control != null)
+ {
+ Control.ForceInvalidate += PickerOnForceInvalidate;
+ }
+ }
+
+ protected override void Dispose(bool disposing)
+ {
+ if (disposing && Control != null)
+ {
+ Control.ForceInvalidate -= PickerOnForceInvalidate;
+ Control.DateChanged -= OnControlDateChanged;
+ }
+
+ base.Dispose(disposing);
+ }
+
+ protected override void OnElementChanged(ElementChangedEventArgs<DatePicker> e)
+ {
+ if (e.NewElement != null)
+ {
+ if (Control == null)
+ {
+ var picker = new FormsDatePicker();
+ picker.DateChanged += OnControlDateChanged;
+ SetNativeControl(picker);
+ }
+
+ UpdateMinimumDate();
+ UpdateMaximumDate();
+ UpdateDate(e.NewElement.Date);
+ }
+
+ base.OnElementChanged(e);
+ }
+
+ protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+ {
+ base.OnElementPropertyChanged(sender, e);
+
+ if (e.PropertyName == DatePicker.DateProperty.PropertyName)
+ UpdateDate(Element.Date);
+ else if (e.PropertyName == DatePicker.MaximumDateProperty.PropertyName)
+ UpdateMaximumDate();
+ else if (e.PropertyName == DatePicker.MinimumDateProperty.PropertyName)
+ UpdateMinimumDate();
+ }
+
+ void OnControlDateChanged(object sender, DatePickerValueChangedEventArgs e)
+ {
+ Element.Date = e.NewDate.Date;
+ DateTime currentDate = Element.Date;
+ if (currentDate != e.NewDate.Date) // Match coerced value
+ UpdateDate(currentDate);
+
+ Element.InvalidateMeasure(InvalidationTrigger.SizeRequestChanged);
+ }
+
+ void PickerOnForceInvalidate(object sender, EventArgs eventArgs)
+ {
+ Element?.InvalidateMeasure(InvalidationTrigger.SizeRequestChanged);
+ }
+
+ void UpdateDate(DateTime date)
+ {
+ Control.Date = date;
+ }
+
+ void UpdateMaximumDate()
+ {
+ DateTime maxdate = Element.MaximumDate;
+ Control.MaxYear = new DateTimeOffset(maxdate.Date);
+ }
+
+ void UpdateMinimumDate()
+ {
+ DateTime mindate = Element.MinimumDate;
+ Control.MinYear = new DateTimeOffset(mindate);
+ }
+ }
+} \ No newline at end of file