private DragAndDropVisualMode HandleDragDropUpon(DragAndDropData data)
{
DragAndDropVisualMode visualMode = DragAndDropVisualMode.Copy;//Move;
var targetDataBundle = data.targetNode.bundle as AssetBundleModel.BundleDataInfo;
if (targetDataBundle != null)
{
if (targetDataBundle.IsSceneBundle)
{
visualMode = DragAndDropVisualMode.Rejected;
}
else
{
if ((data.hasBundleFolder) || (data.hasScene && !targetDataBundle.IsEmpty()))
{
return(DragAndDropVisualMode.Rejected);
}
else
{
if (data.args.performDrop)
{
if (data.draggedNodes != null)
{
AssetBundleModel.Model.HandleBundleMerge(data.draggedNodes, targetDataBundle);
ReloadAndSelect(targetDataBundle.NameHashCode, false);
}
else if (data.paths != null)
{
AssetBundleModel.Model.MoveAssetToBundle(data.paths, targetDataBundle.m_name.BundleName, targetDataBundle.m_name.Variant);
AssetBundleModel.Model.ExecuteAssetMove();
ReloadAndSelect(targetDataBundle.NameHashCode, false);
}
}
}
}
}
else
{
var folder = data.targetNode.bundle as AssetBundleModel.BundleFolderConcreteInfo;
if (folder != null)
{
if (data.args.performDrop)
{
if (data.draggedNodes != null)
{
AssetBundleModel.Model.HandleBundleReparent(data.draggedNodes, folder);
Reload();
}
else if (data.paths != null)
{
DragPathsToNewSpace(data.paths, folder, data.hasScene);
}
}
}
else
{
visualMode = DragAndDropVisualMode.Rejected; //must be a variantfolder
}
}
return(visualMode);
}
/// <summary>Creates a drag area using a vertical layout,
/// and returns TRUE if the drag conditions were met.</summary>
public static bool DragAndDropArea(Type allowedObjectsType, DragAndDropVisualMode visualMode, GUIStyle guiStyle, Action blockAction, params GUILayoutOption[] options)
{
bool allowDragAndDrop = true;
if (Event.current.type == EventType.DragUpdated) {
UnityEngine.Object[] draggedObjs = DragAndDrop.objectReferences;
if (draggedObjs.Length == 0) allowDragAndDrop = false;
int objsCount = draggedObjs.Length;
for (int i = 0; i < objsCount; ++i) {
if (draggedObjs[i].GetType() != allowedObjectsType) {
allowDragAndDrop = false;
break;
}
}
}
return DragAndDropArea(allowDragAndDrop, visualMode, guiStyle, blockAction, options);
}
/// <summary>
/// Creates a drag area using a vertical layout,
/// and returns TRUE when a drag is concluded (meaning something was released on the area)
/// and drag conditions were met.
/// </summary>
public static bool DragAndDropArea(bool allowDragAndDrop, DragAndDropVisualMode visualMode, GUIStyle guiStyle, Action blockAction, params GUILayoutOption[] options)
{
_Vertical(guiStyle, GUI.backgroundColor, blockAction, options);
if (allowDragAndDrop && Event.current.type == EventType.DragUpdated && GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition)) {
DragAndDrop.visualMode = visualMode;
} else if (Event.current.type == EventType.DragPerform && GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition)) {
return true;
}
return false;
}
/// <summary>Creates a drag area using a vertical layout,
/// and returns TRUE if the drag conditions were met.</summary>
public static bool DragAndDropArea(Type allowedObjectsType, DragAndDropVisualMode visualMode, Action blockAction, params GUILayoutOption[] options)
{ return DragAndDropArea(allowedObjectsType, visualMode, null, blockAction, options); }
// ===================================================================================
// SPECIAL LAYOUT METHODS ------------------------------------------------------------
/// <summary>Creates a drag area using a vertical layout,
/// and returns TRUE if the drag conditions were met.</summary>
public static bool DragAndDropArea(bool allowDragAndDrop, DragAndDropVisualMode visualMode, Action blockAction, params GUILayoutOption[] options)
{ return DragAndDropArea(allowDragAndDrop, visualMode, null, blockAction, options); }
public virtual bool DragElement(TreeViewItem targetItem, Rect targetItemRect, bool firstItem)
{
if (targetItem == null)
{
if (m_DropData != null)
{
m_DropData.dropTargetControlID = 0;
m_DropData.rowMarkerControlID = 0;
}
bool perform = Event.current.type == EventType.DragPerform;
DragAndDrop.visualMode = DoDrag(null, null, perform, DropPosition.Below);
Debug.LogError(DoDrag(null, null, perform, DropPosition.Below));
if (DragAndDrop.visualMode != DragAndDropVisualMode.None && perform)
{
FinalizeDragPerformed(true);
}
return(false);
}
Vector2 mousePosition = Event.current.mousePosition;
bool flag = m_TreeView.data.CanBeParent(targetItem);
Rect rect = targetItemRect;
float betweenHalfHeight = !flag ? targetItemRect.height * 0.5f : m_TreeView.gui.halfDropBetweenHeight;
if (firstItem)
{
rect.yMin -= betweenHalfHeight;
}
rect.yMax += betweenHalfHeight;
if (!rect.Contains(mousePosition))
{
return(false);
}
DropPosition dropPosition = mousePosition.y < targetItemRect.yMax - betweenHalfHeight ? (!firstItem || mousePosition.y > targetItemRect.yMin + betweenHalfHeight ? (!flag ? DropPosition.Above : DropPosition.Upon) : DropPosition.Above) : DropPosition.Below;
TreeViewItem parentItem = !m_TreeView.data.IsExpanded(targetItem) || !targetItem.hasChildren ? targetItem.parent : targetItem;
DragAndDropVisualMode andDropVisualMode1 = DragAndDropVisualMode.None;
if (Event.current.type == EventType.DragPerform)
{
if (dropPosition == DropPosition.Upon)
{
andDropVisualMode1 = DoDrag(targetItem, targetItem, true, dropPosition);
}
if (andDropVisualMode1 == DragAndDropVisualMode.None && parentItem != null)
{
andDropVisualMode1 = DoDrag(parentItem, targetItem, true, dropPosition);
}
if (andDropVisualMode1 != DragAndDropVisualMode.None)
{
FinalizeDragPerformed(false);
}
else
{
DragCleanup(true);
m_TreeView.NotifyListenersThatDragEnded(null, false);
}
}
else
{
if (m_DropData == null)
{
m_DropData = new DropData();
}
m_DropData.dropTargetControlID = 0;
m_DropData.rowMarkerControlID = 0;
int itemControlId = TreeView.GetItemControlID(targetItem, m_TreeView);
HandleAutoExpansion(itemControlId, targetItem, targetItemRect, betweenHalfHeight, mousePosition);
if (dropPosition == DropPosition.Upon)
{
andDropVisualMode1 = DoDrag(targetItem, targetItem, false, dropPosition);
}
if (andDropVisualMode1 != DragAndDropVisualMode.None)
{
m_DropData.dropTargetControlID = itemControlId;
DragAndDrop.visualMode = andDropVisualMode1;
}
else if (parentItem != null)
{
DragAndDropVisualMode andDropVisualMode2 = DoDrag(parentItem, targetItem, false, dropPosition);
if (andDropVisualMode2 != DragAndDropVisualMode.None)
{
drawRowMarkerAbove = dropPosition == DropPosition.Above;
m_DropData.rowMarkerControlID = itemControlId;
m_DropData.dropTargetControlID = !drawRowMarkerAbove?TreeView.GetItemControlID(parentItem, m_TreeView) : 0;
DragAndDrop.visualMode = andDropVisualMode2;
}
}
}
Event.current.Use();
return(true);
}
public override DragAndDropVisualMode DoDrag(TreeViewItem parentItem, TreeViewItem targetItem, bool perform, DropPosition dropPos)
{
var hierarchyTargetItem = targetItem as GameObjectTreeViewItem;
// Allow client to handle drag
if (m_CustomDragHandling != null)
{
DragAndDropVisualMode dragResult = m_CustomDragHandling(parentItem as GameObjectTreeViewItem, hierarchyTargetItem, dropPos, perform);
if (dragResult != DragAndDropVisualMode.None)
{
return(dragResult);
}
}
// Scene dragging logic
DragAndDropVisualMode dragSceneResult = DoDragScenes(parentItem as GameObjectTreeViewItem, hierarchyTargetItem, perform, dropPos);
if (dragSceneResult != DragAndDropVisualMode.None)
{
return(dragSceneResult);
}
if (targetItem != null && !IsDropTargetUserModifiable(hierarchyTargetItem, dropPos))
{
return(DragAndDropVisualMode.Rejected);
}
var option = InternalEditorUtility.HierarchyDropMode.kHierarchyDragNormal;
var searchActive = !string.IsNullOrEmpty(dataSource.searchString);
if (searchActive)
{
option |= InternalEditorUtility.HierarchyDropMode.kHierarchySearchActive;
}
if (parentItem == null || targetItem == null)
{
// Here we are dragging outside any treeview items:
if (parentForDraggedObjectsOutsideItems != null)
{
// Use specific parent for DragAndDropForwarding
return(DragAndDropService.Drop(DragAndDropService.kHierarchyDropDstId, 0, option, parentForDraggedObjectsOutsideItems, perform));
}
else
{
// Simulate drag upon the last loaded scene in the hierarchy (adds as last root sibling of the last scene)
Scene lastScene = dataSource.GetLastScene();
if (!lastScene.IsValid())
{
return(DragAndDropVisualMode.Rejected);
}
option |= InternalEditorUtility.HierarchyDropMode.kHierarchyDropUpon;
return(DragAndDropService.Drop(DragAndDropService.kHierarchyDropDstId, lastScene.handle, option, null, perform));
}
}
// Here we are hovering over items
var draggingUpon = dropPos == TreeViewDragging.DropPosition.Upon;
if (searchActive && !draggingUpon)
{
return(DragAndDropVisualMode.None);
}
if (draggingUpon)
{
option |= InternalEditorUtility.HierarchyDropMode.kHierarchyDropUpon;
}
else
{
if (dropPos == TreeViewDragging.DropPosition.Above)
{
option |= InternalEditorUtility.HierarchyDropMode.kHierarchyDropAbove;
}
else
{
option |= InternalEditorUtility.HierarchyDropMode.kHierarchyDropBetween;
}
}
bool isDroppingBetweenParentAndFirstChild = parentItem != null && targetItem != parentItem && dropPos == DropPosition.Above && parentItem.children[0] == targetItem;
if (isDroppingBetweenParentAndFirstChild)
{
option |= InternalEditorUtility.HierarchyDropMode.kHierarchyDropAfterParent;
}
int gameObjectOrSceneInstanceID = GetDropTargetInstanceID(hierarchyTargetItem, dropPos);
if (gameObjectOrSceneInstanceID == 0)
{
return(DragAndDropVisualMode.Rejected);
}
if (perform && SubSceneGUI.IsUsingSubScenes() && !IsValidSubSceneDropTarget(gameObjectOrSceneInstanceID, dropPos, DragAndDrop.objectReferences))
{
return(DragAndDropVisualMode.Rejected);
}
return(DragAndDropService.Drop(DragAndDropService.kHierarchyDropDstId, gameObjectOrSceneInstanceID, option, null, perform));
}
// This method is called from TreeView and handles:
// - Where the dragged items are dropped (above, below or upon)
// - Auto expansion of collapsed items when hovering over them
// - Setting up the render markers for drop location (horizontal lines)
// 'targetItem' is null when not hovering over any target Item, if so the rest of the arguments are invalid
public virtual bool DragElement(TreeViewItem targetItem, Rect targetItemRect, int row)
{
bool perform = Event.current.type == EventType.DragPerform;
// Are we dragging outside any items
if (targetItem == null)
{
// If so clear any drop markers
if (m_DropData != null)
{
m_DropData.dropTargetControlID = 0;
m_DropData.rowMarkerControlID = 0;
}
// And let client decide what happens when dragging outside items
DragAndDrop.visualMode = DoDrag(null, null, perform, DropPosition.Below);
if (DragAndDrop.visualMode != DragAndDropVisualMode.None && perform)
{
FinalizeDragPerformed(true);
}
return(false);
}
DropPosition dropPosition;
if (!TryGetDropPosition(targetItem, targetItemRect, row, out dropPosition))
{
return(false);
}
TreeViewItem parentItem = null;
switch (dropPosition)
{
case DropPosition.Upon:
{
// Client must decide what happens when dropping upon: e.g: insert last or first in child list
parentItem = targetItem;
}
break;
case DropPosition.Below:
{
// When hovering between an expanded parent and its first child then make sure we change state to match that
if (m_TreeView.data.IsExpanded(targetItem) && targetItem.hasChildren)
{
parentItem = targetItem;
targetItem = targetItem.children[0];
dropPosition = DropPosition.Above;
}
else
{
// Drop as next sibling to target
parentItem = targetItem.parent;
}
}
break;
case DropPosition.Above:
{
parentItem = targetItem.parent;
}
break;
default:
Assert.IsTrue(false, "Unhandled enum");
break;
}
DragAndDropVisualMode mode = DragAndDropVisualMode.None;
if (perform)
{
// Try Drop on top of element
if (dropPosition == DropPosition.Upon)
{
mode = DoDrag(targetItem, targetItem, true, dropPosition);
}
// Fall back to dropping on parent (drop between elements)
if (mode == DragAndDropVisualMode.None && parentItem != null)
{
mode = DoDrag(parentItem, targetItem, true, dropPosition);
}
// Finalize drop
if (mode != DragAndDropVisualMode.None)
{
FinalizeDragPerformed(false);
}
else
{
DragCleanup(true);
m_TreeView.NotifyListenersThatDragEnded(null, false);
}
}
else // DragUpdate
{
if (m_DropData == null)
{
m_DropData = new DropData();
}
m_DropData.dropTargetControlID = 0;
m_DropData.rowMarkerControlID = 0;
int itemControlID = TreeViewController.GetItemControlID(targetItem);
HandleAutoExpansion(itemControlID, targetItem, targetItemRect);
// Try drop on top of element
if (dropPosition == DropPosition.Upon)
{
mode = DoDrag(targetItem, targetItem, false, dropPosition);
}
if (mode != DragAndDropVisualMode.None)
{
m_DropData.dropTargetControlID = itemControlID;
DragAndDrop.visualMode = mode;
}
// Fall back to dropping on parent (drop between elements)
else if (targetItem != null && parentItem != null)
{
mode = DoDrag(parentItem, targetItem, false, dropPosition);
if (mode != DragAndDropVisualMode.None)
{
drawRowMarkerAbove = dropPosition == DropPosition.Above;
m_DropData.rowMarkerControlID = itemControlID;
DragAndDrop.visualMode = mode;
}
}
}
Event.current.Use();
return(true);
}
