void PerformActionForSelector(VisualElement destination, DestinationPane pane, int index = -1)
{
var newStyleSheetElement = destination;
bool undo = true;
foreach (var elementToReparent in m_ElementsToReparent)
{
var selectorElementToReparent = elementToReparent.element;
var oldStyleSheetElement = elementToReparent.oldParent;
if (newStyleSheetElement == oldStyleSheetElement)
{
continue;
}
BuilderSharedStyles.MoveSelectorBetweenStyleSheets(
oldStyleSheetElement, newStyleSheetElement, selectorElementToReparent, undo);
undo = false;
}
BuilderSharedStyles.MatchSelectorElementOrderInAsset(newStyleSheetElement, undo);
selection.NotifyOfHierarchyChange();
selection.NotifyOfStylingChange(null);
selection.ForceReselection();
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, Vector2 localMousePosition, int index = -1)
{
// We should have an item reference here if the OnDragStart() worked.
var item = m_LibraryItem;
var itemVTA = item.sourceAsset;
if (!paneWindow.document.WillCauseCircularDependency(itemVTA))
{
BuilderDialogsUtility.DisplayDialog(BuilderConstants.InvalidWouldCauseCircularDependencyMessage,
BuilderConstants.InvalidWouldCauseCircularDependencyMessageDescription, null);
return;
}
destination.RemoveMinSizeSpecialElement();
// Determine if it applies and use Absolute Island insertion.
if (BuilderProjectSettings.enableAbsolutePositionPlacement && pane == DestinationPane.Viewport && m_DragPreviewLastParent == documentRootElement && index < 0)
{
m_DragPreviewLastParent = BuilderPlacementUtilities.CreateAbsoluteIsland(paneWindow, documentRootElement, localMousePosition);
}
// Add VisualElement to Canvas.
m_DragPreviewElement.RemoveFromClassList(s_DragPreviewElementClassName);
if (index < 0)
{
m_DragPreviewLastParent.Add(m_DragPreviewElement);
}
else
{
m_DragPreviewLastParent.Insert(index, m_DragPreviewElement);
}
// Create equivalent VisualElementAsset.
if (item.makeElementAssetCallback == null)
{
BuilderAssetUtilities.AddElementToAsset(
paneWindow.document, m_DragPreviewElement, index);
}
else
{
BuilderAssetUtilities.AddElementToAsset(
paneWindow.document, m_DragPreviewElement, item.makeElementAssetCallback, index);
}
selection.NotifyOfHierarchyChange(null);
selection.NotifyOfStylingChange(null);
selection.Select(null, m_DragPreviewElement);
// Commit to the preview element as the final element.
// This will stop the ResetDragPreviewElement() from calling
// RemoveFromHierarchy() on it.
m_DragPreviewElement = null;
// If we dragged into the Viewport, focus the Viewport.
if (pane == DestinationPane.Viewport)
{
viewport.pane.Focus();
}
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, int index = -1)
{
if (m_TargetElementToReparent.IsSelector())
{
PerformActionForSelector(destination, pane, index);
}
else if (m_TargetElementToReparent.IsStyleSheet())
{
PerformActionForStyleSheet(destination, pane, index);
}
}
void PerformActionForStyleSheet(VisualElement destination, DestinationPane pane, int index = -1)
{
if (destination == null)
{
destination = BuilderSharedStyles.GetSelectorContainerElement(selection.documentRootElement);
}
BuilderAssetUtilities.ReorderStyleSheetsInAsset(paneWindow.document, destination);
selection.NotifyOfHierarchyChange();
selection.NotifyOfStylingChange(null);
selection.ForceReselection();
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, int index = -1)
{
m_DragPreviewElement.RemoveFromClassList(s_DragPreviewElementClassName);
destination.RemoveMinSizeSpecialElement();
// We already have the correct index from the preview element that is
// already inserted in the hierarchy. The index we get from the arguments
// is actually incorrect (off by one) because it will count the
// preview element.
index = m_DragPreviewLastParent.IndexOf(m_DragPreviewElement);
// We should have an item reference here if the OnDragStart() worked.
var item = m_LibraryItem;
var itemVTA = item.SourceAsset;
if (!paneWindow.document.WillCauseCircularDependency(itemVTA))
{
BuilderDialogsUtility.DisplayDialog(BuilderConstants.InvalidWouldCauseCircularDependencyMessage,
BuilderConstants.InvalidWouldCauseCircularDependencyMessageDescription, null);
return;
}
if (item.MakeElementAssetCallback == null)
{
BuilderAssetUtilities.AddElementToAsset(
paneWindow.document, m_DragPreviewElement, index);
}
else
{
BuilderAssetUtilities.AddElementToAsset(
paneWindow.document, m_DragPreviewElement, item.MakeElementAssetCallback, index);
}
selection.NotifyOfHierarchyChange(null);
selection.NotifyOfStylingChange(null);
selection.Select(null, m_DragPreviewElement);
// Commit to the preview element as the final element.
// This will stop the ResetDragPreviewElement() from calling
// RemoveFromHierarchy() on it.
m_DragPreviewElement = null;
// If we dragged into the Viewport, focus the Viewport.
if (pane == DestinationPane.Viewport)
{
Viewport.pane.Focus();
}
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, Vector2 localMousePosition, int index = -1)
{
if (pane == DestinationPane.Viewport && !IsPickedElementValid(m_TargetElementToReparent))
{
return;
}
base.PerformAction(destination, pane, localMousePosition, index);
m_TargetElementToReparent.RemoveFromClassList(s_DragPreviewElementClassName);
// Remove temporary min-size element.
destination.RemoveMinSizeSpecialElement();
var newParent = destination;
// We already have the correct index from the preview element that is
// already inserted in the hierarchy. The index we get from the arguments
// is actually incorrect (off by one) because it will count the
// preview element.
index = m_DragPreviewLastParent.IndexOf(m_TargetElementToReparent);
bool undo = true;
foreach (var elementToReparent in m_ElementsToReparent)
{
var element = elementToReparent.element;
if (newParent == element || newParent.HasAncestor(element))
{
continue;
}
BuilderAssetUtilities.ReparentElementInAsset(
paneWindow.document, element, newParent, index, undo);
undo = false;
}
BuilderAssetUtilities.SortElementsByTheirVisualElementInAsset(newParent);
selection.NotifyOfHierarchyChange(null);
selection.NotifyOfStylingChange(null);
selection.ForceReselection(null);
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, int index = -1)
{
if (BuilderSharedStyles.IsDocumentElement(destination))
{
return;
}
var className = m_ClassNameBeingDragged.TrimStart('.');
destination.AddToClassList(className);
// Update VisualTreeAsset.
BuilderAssetUtilities.AddStyleClassToElementInAsset(
paneWindow.document, destination, className);
selection.NotifyOfHierarchyChange(null);
selection.NotifyOfStylingChange(null);
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, int index = -1)
{
m_TargetElementToReparent.RemoveFromClassList(s_DragPreviewElementClassName);
// Remove temporary min-size element.
destination.RemoveMinSizeSpecialElement();
var elementToReparent = m_TargetElementToReparent;
var newParent = destination;
// We already have the correct index from the preview element that is
// already inserted in the hierarchy. The index we get from the arguments
// is actually incorrect (off by one) because it will count the
// preview element.
index = m_DragPreviewLastParent.IndexOf(m_TargetElementToReparent);
BuilderAssetUtilities.ReparentElementInAsset(
paneWindow.document, elementToReparent, newParent, index);
selection.NotifyOfHierarchyChange(null);
}
protected virtual void PerformAction(VisualElement destination, DestinationPane pane, int index = -1)
{
}
protected virtual void PerformAction(VisualElement destination, DestinationPane pane, Vector2 localMousePosition, int index = -1)
{
}
protected override void PerformAction(VisualElement destination, DestinationPane pane, Vector2 localMousePosition, int index = -1)
{
Reparent(destination, index);
}
