/// <summary>
/// Create a <see cref="VisualBrushDragAdorner"/> that renders a rectangle with fills set to a visual brush of the adorned element.
/// </summary>
/// <param name="adornedElement">The drag source.</param>
/// <returns>
/// A <see cref="VisualBrushDragAdorner"/> that should be disposed when the drag operation ends.
/// Disposing it removes subscriptions and removes the adorner.
/// </returns>
public static VisualBrushDragAdorner CreateVisualBrushAdorner(FrameworkElement adornedElement)
{
var adorner = new VisualBrushDragAdorner(adornedElement);
AdornerService.Show(adorner);
return(adorner);
}
private static void OnIsShowingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var element = (UIElement)d;
if (Equals(e.NewValue, true))
{
var adorner = element.GetAdorner();
if (adorner == null)
{
adorner = TemplatedAdorner.Create(element, (ControlTemplate)element.GetValue(TemplateProperty));
element.SetAdorner(adorner);
}
AdornerService.Show(adorner);
}
else
{
var adorner = element.GetAdorner();
if (adorner != null)
{
AdornerService.Remove(adorner);
}
element.ClearValue(AdornerProperty);
}
}
private static void OnIsShowingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var element = (UIElement)d;
if (Equals(e.NewValue, true))
{
var adorner = element.GetAdorner();
if (adorner == null)
{
var adornedElement = element is Window
? element.FirstOrDefaultRecursiveVisualChild <AdornerDecorator>()?.Child
: element;
adorner = new ContentAdorner(adornedElement);
element.SetAdorner(adorner);
}
SetIfNotNull(d, ContentProperty, adorner, ContentAdorner.ContentProperty);
SetIfNotNull(d, ContentTemplateProperty, adorner, ContentAdorner.ContentTemplateProperty);
SetIfNotNull(d, ContentTemplateSelectorProperty, adorner, ContentAdorner.ContentTemplateSelectorProperty);
SetIfNotNull(d, ContentPresenterStyleProperty, adorner, ContentAdorner.ContentPresenterStyleProperty);
AdornerService.Show(adorner);
}
else
{
var adorner = element.GetAdorner();
if (adorner != null)
{
AdornerService.Remove(adorner);
}
element.ClearValue(AdornerProperty);
}
}
private static void OnIsShowingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var element = (UIElement)d;
if (Equals(e.NewValue, true))
{
var adorner = element.GetAdorner();
if (adorner == null)
{
adorner = new ContentAdorner(element);
element.SetAdorner(adorner);
}
SetIfNotNull(d, ContentProperty, adorner, ContentAdorner.ContentProperty);
SetIfNotNull(d, ContentTemplateProperty, adorner, ContentAdorner.ContentTemplateProperty);
SetIfNotNull(d, ContentTemplateSelectorProperty, adorner, ContentAdorner.ContentTemplateSelectorProperty);
SetIfNotNull(d, ContentPresenterStyleProperty, adorner, ContentAdorner.ContentPresenterStyleProperty);
AdornerService.Show(adorner);
}
else
{
var adorner = element.GetAdorner();
if (adorner != null)
{
AdornerService.Remove(adorner);
}
element.ClearValue(AdornerProperty);
}
}
private static void OnIsShowingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var adornedElement = (Control)d;
if (Equals(e.NewValue, true))
{
var adorner = adornedElement.GetAdorner();
if (adorner == null)
{
adorner = new WatermarkAdorner(adornedElement);
adornedElement.SetAdorner(adorner);
var textStyle = adornedElement.GetTextStyle();
if (textStyle != null)
{
adorner.SetCurrentValue(WatermarkAdorner.TextStyleProperty, textStyle);
}
AdornerService.Show(adorner);
adornedElement.SetCurrentValue(AdornerProperty, adorner);
}
else
{
Debug.Assert(condition: false, message: "Already visible");
}
}
else
{
var adorner = adornedElement.GetAdorner();
if (adorner != null)
{
AdornerService.Remove(adorner);
adornedElement.ClearValue(AdornerProperty);
}
}
}
/// <summary>
/// Create a <see cref="ContentDragAdorner"/> that renders a <see cref="ContentPresenter"/> with Content, ContentTemplate and ContentTemplateSelector from <paramref name="adornedElement"/>.
/// </summary>
/// <param name="adornedElement">The drag source.</param>
/// <returns>
/// A <see cref="ContentDragAdorner"/> that should be disposed when the drag operation ends.
/// Disposing it removes subscriptions and removes the adorner.
/// </returns>
public static ContentDragAdorner Create(ContentPresenter adornedElement)
{
var adorner = new ContentDragAdorner(adornedElement)
{
Content = adornedElement.Content,
ContentTemplate = adornedElement.ContentTemplate,
ContentTemplateSelector = adornedElement.ContentTemplateSelector,
};
AdornerService.Show(adorner);
return(adorner);
}
private static void OnIsVisibleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (Equals(e.NewValue, true) &&
d is UIElement element &&
d.GetValue(TemplateProperty) is ControlTemplate template)
{
if (d.GetValue(AdornerProperty) is null)
{
var adorner = TemplatedAdorner.Create(element, template);
d.SetCurrentValue(AdornerProperty, adorner);
AdornerService.Show(adorner);
}
else
{
Debug.Assert(condition: false, message: $"Element {d} already has an info adorner.");
}
}
/// <summary>
/// Create a <see cref="ContentDragAdorner"/> that renders a <see cref="ContentPresenter"/> with Content, ContentTemplate and ContentTemplateSelector from <paramref name="adornedElement"/>.
/// </summary>
/// <param name="adornedElement">The drag source.</param>
/// <returns>
/// A <see cref="ContentDragAdorner"/> that should be disposed when the drag operation ends.
/// Disposing it removes subscriptions and removes the adorner.
/// </returns>
public static ContentDragAdorner Create(ContentPresenter adornedElement)
{
if (adornedElement is null)
{
throw new ArgumentNullException(nameof(adornedElement));
}
var adorner = new ContentDragAdorner(adornedElement)
{
Content = adornedElement.Content,
ContentTemplate = adornedElement.ContentTemplate,
ContentTemplateSelector = adornedElement.ContentTemplateSelector,
};
AdornerService.Show(adorner);
return(adorner);
}
private static void OnIsVisibleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (Equals(e.NewValue, true))
{
if (d.GetValue(AdornerProperty) is null)
{
var adorner = new ContentAdorner(AdornedElement())
{
Content = d.GetValue(ContentProperty),
ContentTemplate = (DataTemplate)d.GetValue(ContentTemplateProperty),
ContentTemplateSelector = (DataTemplateSelector)d.GetValue(ContentTemplateSelectorProperty),
ContentPresenterStyle = (Style)d.GetValue(ContentPresenterStyleProperty),
};
d.SetCurrentValue(AdornerProperty, adorner);
AdornerService.Show(adorner);
}
else
{
Debug.Assert(condition: false, message: $"Element {d} already has an info adorner.");
}
}
else if (d.GetValue(AdornerProperty) is ContentAdorner adorner)
{
AdornerService.Remove(adorner);
d.ClearValue(AdornerProperty);
}
UIElement AdornedElement()
{
if (d is Window window &&
window.FirstRecursiveVisualChild <AdornerDecorator>() is { Child : { } adornerDecoratorChild })
{
return(adornerDecoratorChild);
}
return((UIElement)d);
}
private static void OnIsShowingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
//Debug.Print($"Visible changed to: {e.NewValue}");
var textBox = (TextBox)d;
if (Equals(e.NewValue, true))
{
var adorner = textBox.GetAdorner();
if (adorner == null)
{
adorner = new WatermarkAdorner(textBox);
textBox.SetAdorner(adorner);
var textStyle = textBox.GetTextStyle();
if (textStyle != null)
{
adorner.SetCurrentValue(WatermarkAdorner.TextStyleProperty, textStyle);
}
AdornerService.Show(adorner);
textBox.SetValue(AdornerProperty, adorner);
}
else
{
Debug.Assert(false, "Already visible");
}
}
else
{
var adorner = textBox.GetAdorner();
if (adorner != null)
{
AdornerService.Remove(adorner);
textBox.ClearValue(AdornerProperty);
}
}
}
/// <summary>
/// Create a <see cref="ContentDragAdorner"/> that renders a <see cref="ContentPresenter"/>.
/// The adorner is added to the adorner layer before it is returned.
/// </summary>
/// <param name="adornedElement">The drag source.</param>
/// <param name="content">The content to drag.</param>
/// <param name="contentTemplate">The template for the dragged content.</param>
/// <param name="contentTemplateSelector">The template selector for the dragged content.</param>
/// <returns>
/// A <see cref="ContentDragAdorner"/> that should be disposed when the drag operation ends.
/// Disposing it removes subscriptions and removes the adorner.
/// </returns>
public static ContentDragAdorner Create(
UIElement adornedElement,
object content,
DataTemplate contentTemplate = null,
DataTemplateSelector contentTemplateSelector = null)
{
var adorner = new ContentDragAdorner(adornedElement)
{
Content = content,
};
if (contentTemplate != null)
{
adorner.ContentTemplate = contentTemplate;
}
if (contentTemplateSelector != null)
{
adorner.ContentTemplateSelector = contentTemplateSelector;
}
AdornerService.Show(adorner);
return(adorner);
}
