public virtual bool CanEnterContainer(PlacementOperation operation)
{
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.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)));
}
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)));
}
/// <summary>
/// Paste items from clipboard into the designer.
/// </summary>
public void Paste()
{
bool pasted = false;
string combinedXaml = Clipboard.GetText(TextDataFormat.Xaml);
IEnumerable <string> xamls = combinedXaml.Split(_delimeter);
xamls = xamls.Where(xaml => xaml != "");
DesignItem parent = _context.Services.Selection.PrimarySelection;
DesignItem child = _context.Services.Selection.PrimarySelection;
XamlDesignItem rootItem = _context.RootItem as XamlDesignItem;
var pastedItems = new Collection <DesignItem>();
foreach (var xaml in xamls)
{
var obj = XamlParser.ParseSnippet(rootItem.XamlObject, xaml, _settings);
if (obj != null)
{
DesignItem item = _context._componentService.RegisterXamlComponentRecursive(obj);
if (item != null)
{
pastedItems.Add(item);
}
}
}
if (pastedItems.Count != 0)
{
var changeGroup = _context.OpenGroup("Paste " + pastedItems.Count + " elements", pastedItems);
while (parent != null && pasted == false)
{
if (parent.ContentProperty != null)
{
if (parent.ContentProperty.IsCollection)
{
if (CollectionSupport.CanCollectionAdd(parent.ContentProperty.ReturnType, pastedItems.Select(item => item.Component)) && parent.GetBehavior <IPlacementBehavior>() != null)
{
AddInParent(parent, pastedItems);
pasted = true;
}
}
else if (pastedItems.Count == 1 && parent.ContentProperty.Value == null && parent.ContentProperty.ValueOnInstance == null && parent.View is ContentControl)
{
AddInParent(parent, pastedItems);
pasted = true;
}
if (!pasted)
{
parent = parent.Parent;
}
}
else
{
parent = parent.Parent;
}
}
while (pasted == false)
{
if (child.ContentProperty != null)
{
if (child.ContentProperty.IsCollection)
{
foreach (var col in child.ContentProperty.CollectionElements)
{
if (col.ContentProperty != null && col.ContentProperty.IsCollection)
{
if (CollectionSupport.CanCollectionAdd(col.ContentProperty.ReturnType, pastedItems.Select(item => item.Component)))
{
pasted = true;
}
}
}
break;
}
else if (child.ContentProperty.Value != null)
{
child = child.ContentProperty.Value;
}
else if (pastedItems.Count == 1)
{
child.ContentProperty.SetValue(pastedItems.First().Component);
pasted = true;
break;
}
else
{
break;
}
}
else
{
break;
}
}
foreach (var pastedItem in pastedItems)
{
_context._componentService.RaiseComponentRegisteredAndAddedToContainer(pastedItem);
}
changeGroup.Commit();
}
}