private static bool CanMoveInside(MoveStrategyContext context, BaseFrameworkElement candidateContainer)
{
if (context.PrimarySelection == null)
{
return(false);
}
IProperty contentProperty = MoveStrategyFactory.GetContentProperty(context, (SceneNode)candidateContainer);
if (contentProperty == null)
{
return(false);
}
PropertySceneInsertionPoint insertionPoint = new PropertySceneInsertionPoint((SceneElement)candidateContainer, contentProperty);
ControlTemplateElement controlTemplateElement;
if (candidateContainer.IsLockedOrAncestorLocked || candidateContainer.IsHiddenOrCollapsedOrAncestorHiddenOrCollapsed || (context.SelectedElements.Count == 0 || Enumerable.Any <SceneElement>((IEnumerable <SceneElement>)context.SelectedElements, (Func <SceneElement, bool>)(element => !insertionPoint.CanInsert((ITypeId)element.TrueTargetTypeId)))) || ProjectNeutralTypes.TabItem.IsAssignableFrom((ITypeId)candidateContainer.Type) || (candidateContainer.Name == "PART_ContentHost" && typeof(ScrollViewer).IsAssignableFrom(candidateContainer.TargetType) && ((controlTemplateElement = context.RootNode as ControlTemplateElement) != null && typeof(TextBoxBase).IsAssignableFrom(controlTemplateElement.TargetElementType)) || candidateContainer.IsPlaceholder))
{
return(false);
}
foreach (SceneNode sceneNode in context.DraggedElements)
{
if (sceneNode.IsAncestorOf((SceneNode)candidateContainer))
{
return(false);
}
}
return(true);
}
private static IProperty GetContentProperty(MoveStrategyContext context, SceneNode candidateContainer)
{
IProperty property = (IProperty)null;
if (context.PrimarySelection != null && context.PrimarySelection.Parent != null && context.PrimarySelection.Parent.Equals((object)candidateContainer))
{
property = candidateContainer.GetPropertyForChild((SceneNode)context.PrimarySelection);
}
return(property ?? candidateContainer.DefaultContentProperty);
}
public static MoveStrategyContext FromSelection(ToolBehavior toolBehavior, SceneElement primarySelection, IList <SceneElement> selectedElements, IList <BaseFrameworkElement> draggedElements, Vector duplicationOffset, Point referencePoint)
{
MoveStrategyContext moveStrategyContext = new MoveStrategyContext();
moveStrategyContext.ToolBehaviorContext = toolBehavior.ToolBehaviorContext;
moveStrategyContext.Transaction = (IToolBehaviorTransaction)toolBehavior;
moveStrategyContext.MouseDevice = toolBehavior.MouseDevice;
moveStrategyContext.PrimarySelection = primarySelection;
moveStrategyContext.SelectedElements = new ReadOnlyCollection <SceneElement>(selectedElements ?? (IList <SceneElement>) new List <SceneElement>());
moveStrategyContext.DraggedElements = new ReadOnlyCollection <BaseFrameworkElement>(draggedElements ?? (IList <BaseFrameworkElement>) new List <BaseFrameworkElement>());
moveStrategyContext.DuplicationOffset = duplicationOffset;
moveStrategyContext.SnapshotDraggedElements(moveStrategyContext.ActiveView, referencePoint);
return(moveStrategyContext);
}
private static MoveStrategy CreateForLayoutMode(MoveStrategyContext context, SceneElement hitElement)
{
SceneElement sceneElement = hitElement;
while (sceneElement != null)
{
BaseFrameworkElement frameworkElement = sceneElement as BaseFrameworkElement;
if (frameworkElement != null && context.RootNode.IsAncestorOf((SceneNode)frameworkElement))
{
if (!MoveStrategyFactory.CanMoveInside(context, frameworkElement))
{
sceneElement = frameworkElement.ParentElement;
continue;
}
MoveStrategy byParentType = MoveStrategyFactory.CreateByParentType(context, frameworkElement);
if (byParentType != null)
{
bool flag = false;
ItemsControlElement itemsControlElement = frameworkElement.ParentElement as ItemsControlElement;
ContentControlElement contentControlElement = frameworkElement as ContentControlElement;
if (itemsControlElement != null && contentControlElement != null && (ItemsControlElement.ItemsProperty.Equals((object)itemsControlElement.GetPropertyForChild((SceneNode)frameworkElement)) && (itemsControlElement.ViewObject as IViewItemsControl).IsItemItsOwnContainer(contentControlElement.ViewObject)))
{
flag = true;
}
if (!flag)
{
IProperty contentProperty = MoveStrategyFactory.GetContentProperty(context, (SceneNode)frameworkElement);
int childrenForElement = MoveStrategy.GetMaxChildrenForElement((SceneElement)frameworkElement, contentProperty);
if (context.DraggedElements.Count <= childrenForElement && (childrenForElement != 1 || context.DraggedElements.Count != 1 || (!frameworkElement.IsAncestorOf((SceneNode)context.DraggedElements[0]) || context.DraggedElements[0].Parent == frameworkElement)))
{
byParentType.LayoutContainer = frameworkElement;
return(byParentType);
}
}
}
}
if (sceneElement != context.RootNode)
{
sceneElement = sceneElement.ParentElement;
}
else
{
break;
}
}
return((MoveStrategy)null);
}
public static MoveStrategy Create(MoveStrategyContext context, SceneElement hitElement, bool constraining)
{
MoveStrategy moveStrategy = (MoveStrategy)null;
if (context.IsRecordingKeyframes)
{
moveStrategy = MoveStrategyFactory.CreateForAnimationMode(context);
}
if (moveStrategy == null)
{
moveStrategy = MoveStrategyFactory.CreateForLayoutMode(context, hitElement);
}
if (moveStrategy != null)
{
moveStrategy.IsConstraining = constraining;
}
return(moveStrategy);
}
private static MoveStrategy CreateByParentType(MoveStrategyContext context, BaseFrameworkElement parentContainer)
{
MoveStrategyFactory.MoveStrategyTypeHandlerFactory orCreateCache = DesignSurfacePlatformCaches.GetOrCreateCache <MoveStrategyFactory.MoveStrategyTypeHandlerFactory>(parentContainer.Platform.Metadata, DesignSurfacePlatformCaches.MoveStrategyFactoryCache);
ItemsControlElement itemsControlElement = parentContainer as ItemsControlElement;
TextBlockElement textBlockElement = parentContainer as TextBlockElement;
Type type = (Type)null;
if (itemsControlElement != null && itemsControlElement.ItemsHost != null)
{
type = orCreateCache.GetHandlerType((ITypeResolver)itemsControlElement.ProjectContext, itemsControlElement.ItemsHost.GetIType((ITypeResolver)parentContainer.ProjectContext), true);
}
if (type == (Type)null)
{
type = orCreateCache.GetHandlerType((ITypeResolver)parentContainer.ProjectContext, parentContainer.Type, false);
}
if (type == typeof(GenericMoveStrategy))
{
ILayoutDesigner designerForParent = parentContainer.ViewModel.GetLayoutDesignerForParent((SceneElement)parentContainer, true);
if ((designerForParent.GetWidthConstraintMode(parentContainer, (BaseFrameworkElement)null) & LayoutConstraintMode.CanvasLike) == LayoutConstraintMode.NonOverlappingGridlike && (designerForParent.GetHeightConstraintMode(parentContainer, (BaseFrameworkElement)null) & LayoutConstraintMode.CanvasLike) == LayoutConstraintMode.NonOverlappingGridlike)
{
type = typeof(LayoutMoveStrategy);
}
}
if (textBlockElement != null && !parentContainer.ViewModel.ProjectContext.IsCapabilitySet(PlatformCapability.SupportsTextBlockInlineUIContainer))
{
type = (Type)null;
}
if (!(type != (Type)null))
{
return((MoveStrategy)null);
}
MoveStrategy moveStrategy = (MoveStrategy)Activator.CreateInstance(type, new object[1]
{
(object)context
});
moveStrategy.LayoutContainer = parentContainer;
return(moveStrategy);
}
private static MoveStrategy CreateForAnimationMode(MoveStrategyContext context)
{
BaseFrameworkElement frameworkElement = (BaseFrameworkElement)null;
if (context.DraggedElements.Count != 0)
{
SceneNode parent = context.DraggedElements[0].Parent;
while (parent != null && !(parent is BaseFrameworkElement))
{
parent = parent.Parent;
}
frameworkElement = parent as BaseFrameworkElement;
}
if (frameworkElement == null || !context.RootNode.IsAncestorOf((SceneNode)frameworkElement))
{
return((MoveStrategy)null);
}
LayoutMoveStrategy layoutMoveStrategy = new LayoutMoveStrategy(context);
layoutMoveStrategy.EnableAnimationMode = true;
layoutMoveStrategy.LayoutContainer = frameworkElement;
return((MoveStrategy)layoutMoveStrategy);
}
protected BaseFlowMoveStrategy(MoveStrategyContext context, BaseFlowInsertionPoint insertionPoint)
: base(context)
{
this.insertionPoint = insertionPoint;
}
internal InplaceMoveStrategy(MoveStrategyContext context)
: base(context)
{
}
public LayoutMoveStrategy(MoveStrategyContext context)
: base(context)
{
}
public GenericMoveStrategy(MoveStrategyContext context)
: base(context)
{
}
public DockPanelMoveStrategy(MoveStrategyContext context)
: base(context)
{
}
public FlowPanelMoveStrategy(MoveStrategyContext context)
: base(context, (BaseFlowInsertionPoint) new FlowPanelInsertionPoint())
{
}
public TextFlowMoveStrategy(MoveStrategyContext context)
: base(context, (BaseFlowInsertionPoint) new TextFlowInsertionPoint())
{
}
public MoveStrategy(MoveStrategyContext context)
{
this.Context = context;
}
