protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
if (Element == null)
{
return;
}
_extendedButton = Element as ExtendedButton;
if (_extendedButton.IsCustomButton)
{
SetNativeControl(UIButton.FromType(UIButtonType.Custom));
base.Control.TouchUpInside += (sender, _) =>
{
((IButtonController)Element)?.SendClicked();
};
base.OnElementChanged(e);
}
else
{
base.OnElementChanged(e);
}
SetStyle();
}
/// <summary>
/// Adds individual action buttons to the alert view.
/// </summary>
/// <param name="action">Action.</param>
public void AddAction(AdvancedActionSheetAction action)
{
var ExtendedButton = new ExtendedButton()
{
Style = AdvancedActionSheetStyles.StandardButtonStyle,
Command = new Command(async() =>
{
await Navigation.PopPopupAsync();
action.Command?.Execute(null);
}),
CustomFont = action.Font,
Text = action.Title
};
if (action.ActionType == ActionType.Cancel)
{
CancelButtonVisible = true;
CancelText = action.Title;
CancelFont = action.Font;
CancelCommand = new Command(() =>
{
action.Command?.Execute(null);
});
OnPropertyChanged(nameof(CancelButtonVisible));
OnPropertyChanged(nameof(CancelCommand));
OnPropertyChanged(nameof(CancelText));
OnPropertyChanged(nameof(CancelFont));
}
else
{
buttonStack.Children.Add(ExtendedButton);
}
}
private void SetPressedBackgroundColor(ExtendedButton extendedButton)
{
if (extendedButton.PressedBackgroundColor != Color.Default)
{
var pressed = UIColorExtensions.GetImageFromColor(extendedButton.PressedBackgroundColor.ToUIColor());
this.Control.SetBackgroundImage(pressed, UIControlState.Highlighted);
this.Control.SetBackgroundImage(pressed, UIControlState.Selected);
this.Control.ClipsToBounds = true;
}
}
protected override void OnAttached()
{
_ExtendedButton = Element as ExtendedButton;
_ExtendedButton.OnTouchesMoved += HandleTouchesMoved;
_ExtendedButton.OnTouchesBegan += HandleTouchesBegan;
_ExtendedButton.OnTouchesEnded += HandleTouchesEnded;
_ExtendedButton.OnDidLayoutSubviews += ExtendedButton_OnDidLayoutSubviews;
CreateFillView();
}
private void SetDisabledBackgroundColor(ExtendedButton extendedButton)
{
if (extendedButton.DisabledBackgroundColor != Color.Default)
{
var disabled = UIColorExtensions.GetImageFromColor(extendedButton.DisabledBackgroundColor.ToUIColor());
if (extendedButton.BackgroundColor != Color.Transparent)
{
this.Control.Layer.BorderColor = UIColor.Clear.CGColor;
}
this.Control.SetBackgroundImage(disabled, UIControlState.Disabled);
}
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
_extendedButton = Element as ExtendedButton;
if (_extendedButton != null)
{
if (e.PropertyName == Button.TextProperty.PropertyName ||
e.PropertyName == ExtendedButton.CustomFontProperty.PropertyName ||
e.PropertyName == ExtendedButton.PressedCustomFontProperty.PropertyName ||
e.PropertyName == ExtendedLabel.CustomFontProperty.PropertyName ||
e.PropertyName == ExtendedButton.ImageVisibleProperty.PropertyName)
{
SetFont();
}
if (e.PropertyName == ExtendedButton.HorizontalContentAlignmentProperty.PropertyName ||
e.PropertyName == ExtendedButton.VerticalContentAlignmentProperty.PropertyName ||
e.PropertyName == ExtendedButton.ContentPaddingProperty.PropertyName)
{
SetContentAlignment();
}
if (e.PropertyName == Button.ImageProperty.PropertyName ||
e.PropertyName == ExtendedButton.ImageRightAlignedProperty.PropertyName ||
e.PropertyName == ExtendedButton.ImageHorizontalOffsetProperty.PropertyName)
{
SetImage();
}
if (e.PropertyName == ExtendedButton.PressedBackgroundColorProperty.PropertyName)
{
SetPressedBackgroundColor(_extendedButton);
}
if (e.PropertyName == ExtendedButton.DisabledBackgroundColorProperty.PropertyName)
{
SetDisabledBackgroundColor(_extendedButton);
}
}
}
