public virtual void EndPlacement(PlacementOperation operation)
{
InfoTextEnterArea.Stop(ref infoTextEnterArea);
this.ExtendedItem.Services.Selection.SetSelectedComponents(null);
this.ExtendedItem.Services.Selection.SetSelectedComponents(operation.PlacedItems.Select(x => x.Item).ToList());
}
public virtual bool CanEnterContainer(PlacementOperation operation, bool shouldAlwaysEnter)
{
var canEnter = internalCanEnterContainer(operation);
if (canEnter && !shouldAlwaysEnter && !Keyboard.IsKeyDown(Key.LeftAlt) && !Keyboard.IsKeyDown(Key.RightAlt))
{
var b = new Rect(0, 0, ((FrameworkElement)this.ExtendedItem.View).ActualWidth, ((FrameworkElement)this.ExtendedItem.View).ActualHeight);
InfoTextEnterArea.Start(ref infoTextEnterArea, this.Services, this.ExtendedItem.View, b, Translations.Instance.PressAltText);
return(false);
}
return(canEnter);
}
private bool internalCanEnterContainer(PlacementOperation operation)
{
InfoTextEnterArea.Stop(ref infoTextEnterArea);
if (ExtendedItem.Component is Expander)
{
if (!((Expander)ExtendedItem.Component).IsExpanded)
{
((Expander)ExtendedItem.Component).IsExpanded = true;
}
}
if (ExtendedItem.Component is UserControl && ExtendedItem.ComponentType != typeof(UserControl))
{
return(false);
}
if (ExtendedItem.Component is Decorator)
{
return(((Decorator)ExtendedItem.Component).Child == null);
}
if (ExtendedItem.ContentProperty.IsCollection)
{
return(CollectionSupport.CanCollectionAdd(ExtendedItem.ContentProperty.ReturnType,
operation.PlacedItems.Select(p => p.Item.Component)));
}
if (ExtendedItem.View is ContentControl)
{
if (!CanContentControlAdd((ContentControl)ExtendedItem.View))
{
return(false);
}
}
if (ExtendedItem.ContentProperty.ReturnType == typeof(string))
{
return(false);
}
if (!ExtendedItem.ContentProperty.IsSet)
{
return(true);
}
object value = ExtendedItem.ContentProperty.ValueOnInstance;
// don't overwrite non-primitive values like bindings
return(ExtendedItem.ContentProperty.Value == null && (value is string && string.IsNullOrEmpty(value as string)));
}
public virtual void EndPlacement(PlacementOperation operation)
{
InfoTextEnterArea.Stop(ref infoTextEnterArea);
}
