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using System;
using System.ComponentModel;
using AppKit;
using Foundation;
namespace Xamarin.Forms.Platform.MacOS
{
public class TimePickerRenderer : ViewRenderer<TimePicker, NSDatePicker>
{
NSColor _defaultTextColor;
NSColor _defaultBackgroundColor;
bool _disposed;
IElementController ElementController => Element;
protected override void OnElementChanged(ElementChangedEventArgs<TimePicker> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
if (Control == null)
{
SetNativeControl(new NSDatePicker
{
DatePickerMode = NSDatePickerMode.Single,
TimeZone = new NSTimeZone("UTC"),
DatePickerStyle = NSDatePickerStyle.TextFieldAndStepper,
DatePickerElements = NSDatePickerElementFlags.HourMinuteSecond
});
Control.ValidateProposedDateValue += HandleValueChanged;
_defaultTextColor = Control.TextColor;
_defaultBackgroundColor = Control.BackgroundColor;
}
UpdateTime();
UpdateTextColor();
}
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == TimePicker.TimeProperty.PropertyName ||
e.PropertyName == TimePicker.FormatProperty.PropertyName)
UpdateTime();
if (e.PropertyName == TimePicker.TextColorProperty.PropertyName ||
e.PropertyName == VisualElement.IsEnabledProperty.PropertyName)
UpdateTextColor();
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
if (Control != null)
Control.ValidateProposedDateValue -= HandleValueChanged;
_disposed = true;
}
base.Dispose(disposing);
}
protected override void SetBackgroundColor(Color color)
{
base.SetBackgroundColor(color);
if (Control == null)
return;
Control.BackgroundColor = color == Color.Default ? _defaultBackgroundColor : color.ToNSColor();
}
void HandleValueChanged(object sender, NSDatePickerValidatorEventArgs e)
{
ElementController?.SetValueFromRenderer(TimePicker.TimeProperty,
Control.DateValue.ToDateTime() - new DateTime(2001, 1, 1));
}
void UpdateTime()
{
if (Control == null || Element == null)
return;
var time = new DateTime(2001, 1, 1).Add(Element.Time);
var newDate = time.ToNSDate();
if (!Equals(Control.DateValue, newDate))
Control.DateValue = newDate;
}
void UpdateTextColor()
{
if (Control == null || Element == null)
return;
var textColor = Element.TextColor;
if (textColor.IsDefault || !Element.IsEnabled)
Control.TextColor = _defaultTextColor;
else
Control.TextColor = textColor.ToNSColor();
}
}
}
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