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using System;
using System.ComponentModel;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
using Xamarin.Forms.Internals;
#if WINDOWS_UWP
namespace Xamarin.Forms.Platform.UWP
#else
namespace Xamarin.Forms.Platform.WinRT
#endif
{
public class TimePickerRenderer : ViewRenderer<TimePicker, FormsTimePicker>, IWrapperAware
{
Brush _defaultBrush;
public void NotifyWrapped()
{
if (Control != null)
{
Control.ForceInvalidate += PickerOnForceInvalidate;
}
}
protected override void Dispose(bool disposing)
{
if (disposing && Control != null)
{
Control.ForceInvalidate -= PickerOnForceInvalidate;
Control.TimeChanged -= OnControlTimeChanged;
Control.Loaded -= ControlOnLoaded;
}
base.Dispose(disposing);
}
protected override void OnElementChanged(ElementChangedEventArgs<TimePicker> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
if (Control == null)
{
var picker = new FormsTimePicker();
SetNativeControl(picker);
Control.TimeChanged += OnControlTimeChanged;
Control.Loaded += ControlOnLoaded;
}
UpdateTime();
}
}
void ControlOnLoaded(object sender, RoutedEventArgs routedEventArgs)
{
// The defaults from the control template won't be available
// right away; we have to wait until after the template has been applied
_defaultBrush = Control.Foreground;
UpdateTextColor();
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == TimePicker.TimeProperty.PropertyName)
UpdateTime();
if (e.PropertyName == TimePicker.TextColorProperty.PropertyName)
UpdateTextColor();
}
void OnControlTimeChanged(object sender, TimePickerValueChangedEventArgs e)
{
Element.Time = e.NewTime;
((IVisualElementController)Element)?.InvalidateMeasure(InvalidationTrigger.SizeRequestChanged);
}
void PickerOnForceInvalidate(object sender, EventArgs eventArgs)
{
((IVisualElementController)Element)?.InvalidateMeasure(InvalidationTrigger.SizeRequestChanged);
}
void UpdateTime()
{
Control.Time = Element.Time;
}
void UpdateTextColor()
{
Color color = Element.TextColor;
Control.Foreground = color.IsDefault ? (_defaultBrush ?? color.ToBrush()) : color.ToBrush();
}
}
}
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