protected virtual void DoNodeGUI(Rect rect, int row, TreeViewItem item, bool selected, bool focused, bool useBoldFont)
{
EditorGUIUtility.SetIconSize(new Vector2(this.k_IconWidth, this.k_IconWidth));
float foldoutIndent = this.GetFoldoutIndent(item);
int itemControlID = TreeView.GetItemControlID(item);
bool flag = false;
if (this.m_TreeView.dragging != null)
{
flag = (this.m_TreeView.dragging.GetDropTargetControlID() == itemControlID && this.m_TreeView.data.CanBeParent(item));
}
bool flag2 = this.IsRenaming(item.id);
bool flag3 = this.m_TreeView.data.IsExpandable(item);
if (flag2 && Event.current.type == EventType.Repaint)
{
float num = (!(item.icon == null)) ? this.k_IconWidth : 0f;
float num2 = foldoutIndent + this.k_FoldoutWidth + num + this.iconTotalPadding - 1f;
this.GetRenameOverlay().editFieldRect = new Rect(rect.x + num2, rect.y, rect.width - num2, rect.height);
}
if (Event.current.type == EventType.Repaint)
{
string label = item.displayName;
if (flag2)
{
selected = false;
label = string.Empty;
}
if (selected)
{
TreeViewGUI.s_Styles.selectionStyle.Draw(rect, false, false, true, focused);
}
if (flag)
{
TreeViewGUI.s_Styles.lineStyle.Draw(rect, GUIContent.none, true, true, false, false);
}
this.DrawIconAndLabel(rect, item, label, selected, focused, useBoldFont, false);
if (this.m_TreeView.dragging != null && this.m_TreeView.dragging.GetRowMarkerControlID() == itemControlID)
{
this.m_DraggingInsertionMarkerRect = new Rect(rect.x + foldoutIndent + this.k_FoldoutWidth, rect.y, rect.width - foldoutIndent, rect.height);
}
}
if (flag3)
{
this.DoFoldout(rect, item, row);
}
EditorGUIUtility.SetIconSize(Vector2.zero);
}
protected virtual void DoNodeGUI(Rect rect, TreeViewItem item, bool selected, bool focused, bool useBoldFont)
{
EditorGUIUtility.SetIconSize(new Vector2(this.k_IconWidth, this.k_IconWidth));
float foldoutIndent = this.GetFoldoutIndent(item);
Rect position = rect;
int itemControlID = TreeView.GetItemControlID(item);
bool flag = false;
if (this.m_TreeView.dragging != null)
{
flag = (this.m_TreeView.dragging.GetDropTargetControlID() == itemControlID && this.m_TreeView.data.CanBeParent(item));
}
bool flag2 = this.IsRenaming(item.id);
bool flag3 = this.m_TreeView.data.IsExpandable(item);
if (flag2 && Event.current.type == EventType.Repaint)
{
float num = foldoutIndent + this.k_FoldoutWidth + this.k_IconWidth + this.iconTotalPadding - 1f;
this.GetRenameOverlay().editFieldRect = new Rect(rect.x + num, rect.y, rect.width - num, rect.height);
}
if (Event.current.type == EventType.Repaint)
{
string label = item.displayName;
if (flag2)
{
selected = false;
label = string.Empty;
}
if (selected)
{
TreeViewGUI.s_Styles.lineStyle.Draw(rect, false, false, true, focused);
}
if (flag)
{
TreeViewGUI.s_Styles.lineStyle.Draw(rect, GUIContent.none, true, true, false, false);
}
this.DrawIconAndLabel(rect, item, label, selected, focused, useBoldFont, false);
if (this.m_TreeView.dragging != null && this.m_TreeView.dragging.GetRowMarkerControlID() == itemControlID)
{
this.m_DraggingInsertionMarkerRect = new Rect(rect.x + foldoutIndent + this.k_FoldoutWidth, rect.y, rect.width - foldoutIndent, rect.height);
}
}
if (flag3)
{
position.x = foldoutIndent;
position.width = this.k_FoldoutWidth;
EditorGUI.BeginChangeCheck();
bool flag4 = GUI.Toggle(position, this.m_TreeView.data.IsExpanded(item), GUIContent.none, TreeViewGUI.s_Styles.foldout);
if (EditorGUI.EndChangeCheck())
{
if (Event.current.alt)
{
this.m_TreeView.data.SetExpandedWithChildren(item, flag4);
}
else
{
this.m_TreeView.data.SetExpanded(item, flag4);
}
if (flag4)
{
this.m_TreeView.UserExpandedNode(item);
}
}
}
EditorGUIUtility.SetIconSize(Vector2.zero);
}
public virtual bool DragElement(TreeViewItem targetItem, Rect targetItemRect, bool firstItem)
{
DropPosition below;
TreeViewItem parent;
if (targetItem == null)
{
if (this.m_DropData != null)
{
this.m_DropData.dropTargetControlID = 0;
this.m_DropData.rowMarkerControlID = 0;
}
bool perform = Event.current.type == EventType.DragPerform;
DragAndDrop.visualMode = this.DoDrag(null, null, perform, DropPosition.Below);
if ((DragAndDrop.visualMode != DragAndDropVisualMode.None) && perform)
{
this.FinalizeDragPerformed(true);
}
return(false);
}
Vector2 mousePosition = Event.current.mousePosition;
bool flag2 = this.m_TreeView.data.CanBeParent(targetItem);
Rect rect = targetItemRect;
float betweenHalfHeight = !flag2 ? (targetItemRect.height * 0.5f) : this.m_TreeView.gui.halfDropBetweenHeight;
if (firstItem)
{
rect.yMin -= betweenHalfHeight;
}
rect.yMax += betweenHalfHeight;
if (!rect.Contains(mousePosition))
{
return(false);
}
if (!flag2 || (mousePosition.y >= (targetItemRect.yMax - betweenHalfHeight)))
{
below = DropPosition.Below;
}
else if (!flag2 || (firstItem && (mousePosition.y <= (targetItemRect.yMin + betweenHalfHeight))))
{
below = DropPosition.Above;
}
else
{
below = DropPosition.Upon;
}
if (this.m_TreeView.data.IsExpanded(targetItem) && targetItem.hasChildren)
{
parent = targetItem;
}
else
{
parent = targetItem.parent;
}
DragAndDropVisualMode none = DragAndDropVisualMode.None;
if (Event.current.type == EventType.DragPerform)
{
if (below == DropPosition.Upon)
{
none = this.DoDrag(targetItem, targetItem, true, below);
}
if ((none == DragAndDropVisualMode.None) && (parent != null))
{
none = this.DoDrag(parent, targetItem, true, below);
}
if (none != DragAndDropVisualMode.None)
{
this.FinalizeDragPerformed(false);
}
else
{
this.DragCleanup(true);
this.m_TreeView.NotifyListenersThatDragEnded(null, false);
}
}
else
{
if (this.m_DropData == null)
{
this.m_DropData = new DropData();
}
this.m_DropData.dropTargetControlID = 0;
this.m_DropData.rowMarkerControlID = 0;
int itemControlID = TreeView.GetItemControlID(targetItem);
this.HandleAutoExpansion(itemControlID, targetItem, targetItemRect, betweenHalfHeight, mousePosition);
if (below == DropPosition.Upon)
{
none = this.DoDrag(targetItem, targetItem, false, below);
}
if (none != DragAndDropVisualMode.None)
{
this.m_DropData.dropTargetControlID = itemControlID;
DragAndDrop.visualMode = none;
}
else if ((targetItem != null) && (parent != null))
{
none = this.DoDrag(parent, targetItem, false, below);
if (none != DragAndDropVisualMode.None)
{
this.drawRowMarkerAbove = below == DropPosition.Above;
this.m_DropData.rowMarkerControlID = itemControlID;
this.m_DropData.dropTargetControlID = !this.drawRowMarkerAbove ? TreeView.GetItemControlID(parent) : 0;
DragAndDrop.visualMode = none;
}
}
}
Event.current.Use();
return(true);
}
public virtual bool DragElement(TreeViewItem targetItem, Rect targetItemRect, bool firstItem)
{
if (targetItem == null)
{
if (this.m_DropData != null)
{
this.m_DropData.dropTargetControlID = 0;
this.m_DropData.rowMarkerControlID = 0;
}
bool perform = Event.current.type == EventType.DragPerform;
DragAndDrop.visualMode = this.DoDrag((TreeViewItem)null, (TreeViewItem)null, perform, TreeViewDragging.DropPosition.Below);
if (DragAndDrop.visualMode != DragAndDropVisualMode.None && perform)
{
this.FinalizeDragPerformed(true);
}
return(false);
}
Vector2 mousePosition = Event.current.mousePosition;
bool flag = this.m_TreeView.data.CanBeParent(targetItem);
Rect rect = targetItemRect;
float betweenHalfHeight = !flag ? targetItemRect.height * 0.5f : this.m_TreeView.gui.halfDropBetweenHeight;
if (firstItem)
{
rect.yMin -= betweenHalfHeight;
}
rect.yMax += betweenHalfHeight;
if (!rect.Contains(mousePosition))
{
return(false);
}
TreeViewDragging.DropPosition dropPosition = (double)mousePosition.y < (double)targetItemRect.yMax - (double)betweenHalfHeight ? (!firstItem || (double)mousePosition.y > (double)targetItemRect.yMin + (double)betweenHalfHeight ? (!flag ? TreeViewDragging.DropPosition.Above : TreeViewDragging.DropPosition.Upon) : TreeViewDragging.DropPosition.Above) : TreeViewDragging.DropPosition.Below;
TreeViewItem parentItem = !this.m_TreeView.data.IsExpanded(targetItem) || !targetItem.hasChildren ? targetItem.parent : targetItem;
DragAndDropVisualMode andDropVisualMode1 = DragAndDropVisualMode.None;
if (Event.current.type == EventType.DragPerform)
{
if (dropPosition == TreeViewDragging.DropPosition.Upon)
{
andDropVisualMode1 = this.DoDrag(targetItem, targetItem, true, dropPosition);
}
if (andDropVisualMode1 == DragAndDropVisualMode.None && parentItem != null)
{
andDropVisualMode1 = this.DoDrag(parentItem, targetItem, true, dropPosition);
}
if (andDropVisualMode1 != DragAndDropVisualMode.None)
{
this.FinalizeDragPerformed(false);
}
else
{
this.DragCleanup(true);
this.m_TreeView.NotifyListenersThatDragEnded((int[])null, false);
}
}
else
{
if (this.m_DropData == null)
{
this.m_DropData = new TreeViewDragging.DropData();
}
this.m_DropData.dropTargetControlID = 0;
this.m_DropData.rowMarkerControlID = 0;
int itemControlId = TreeView.GetItemControlID(targetItem);
this.HandleAutoExpansion(itemControlId, targetItem, targetItemRect, betweenHalfHeight, mousePosition);
if (dropPosition == TreeViewDragging.DropPosition.Upon)
{
andDropVisualMode1 = this.DoDrag(targetItem, targetItem, false, dropPosition);
}
if (andDropVisualMode1 != DragAndDropVisualMode.None)
{
this.m_DropData.dropTargetControlID = itemControlId;
DragAndDrop.visualMode = andDropVisualMode1;
}
else if (targetItem != null && parentItem != null)
{
DragAndDropVisualMode andDropVisualMode2 = this.DoDrag(parentItem, targetItem, false, dropPosition);
if (andDropVisualMode2 != DragAndDropVisualMode.None)
{
this.drawRowMarkerAbove = dropPosition == TreeViewDragging.DropPosition.Above;
this.m_DropData.rowMarkerControlID = itemControlId;
this.m_DropData.dropTargetControlID = !this.drawRowMarkerAbove ? TreeView.GetItemControlID(parentItem) : 0;
DragAndDrop.visualMode = andDropVisualMode2;
}
}
}
Event.current.Use();
return(true);
}
public void HandleUnusedMouseEventsForItem(Rect rect, TreeViewItem item, bool firstItem)
{
int itemControlID = TreeView.GetItemControlID(item);
Event current = Event.current;
EventType typeForControl = current.GetTypeForControl(itemControlID);
switch (typeForControl)
{
case EventType.MouseDown:
if (rect.Contains(Event.current.mousePosition))
{
if (Event.current.button == 0)
{
GUIUtility.keyboardControl = this.m_KeyboardControlID;
this.Repaint();
if (Event.current.clickCount == 2)
{
if (this.itemDoubleClickedCallback != null)
{
this.itemDoubleClickedCallback(item.id);
}
}
else
{
if (this.dragging == null || this.dragging.CanStartDrag(item, this.m_DragSelection, Event.current.mousePosition))
{
this.m_DragSelection = this.GetNewSelection(item, true, false);
DragAndDropDelay dragAndDropDelay = (DragAndDropDelay)GUIUtility.GetStateObject(typeof(DragAndDropDelay), itemControlID);
dragAndDropDelay.mouseDownPosition = Event.current.mousePosition;
}
GUIUtility.hotControl = itemControlID;
}
current.Use();
}
else if (Event.current.button == 1)
{
bool keepMultiSelection = true;
this.SelectionClick(item, keepMultiSelection);
}
}
return;
case EventType.MouseUp:
if (GUIUtility.hotControl == itemControlID)
{
GUIUtility.hotControl = 0;
this.m_DragSelection.Clear();
current.Use();
if (rect.Contains(current.mousePosition))
{
float contentIndent = this.gui.GetContentIndent(item);
Rect rect2 = new Rect(rect.x + contentIndent, rect.y, rect.width - contentIndent, rect.height);
List <int> selectedIDs = this.state.selectedIDs;
if (this.m_AllowRenameOnMouseUp && selectedIDs != null && selectedIDs.Count == 1 && selectedIDs[0] == item.id && rect2.Contains(current.mousePosition) && !EditorGUIUtility.HasHolddownKeyModifiers(current))
{
this.BeginNameEditing(0.5f);
}
else
{
this.SelectionClick(item, false);
}
}
}
return;
case EventType.MouseMove:
IL_2D:
if (typeForControl == EventType.DragUpdated || typeForControl == EventType.DragPerform)
{
if (this.dragging != null && this.dragging.DragElement(item, rect, firstItem))
{
GUIUtility.hotControl = 0;
}
return;
}
if (typeForControl != EventType.ContextClick)
{
return;
}
if (rect.Contains(current.mousePosition) && this.contextClickItemCallback != null)
{
this.contextClickItemCallback(item.id);
}
return;
case EventType.MouseDrag:
if (GUIUtility.hotControl == itemControlID && this.dragging != null)
{
DragAndDropDelay dragAndDropDelay2 = (DragAndDropDelay)GUIUtility.GetStateObject(typeof(DragAndDropDelay), itemControlID);
if (dragAndDropDelay2.CanStartDrag() && this.dragging.CanStartDrag(item, this.m_DragSelection, dragAndDropDelay2.mouseDownPosition))
{
this.dragging.StartDrag(item, this.m_DragSelection);
GUIUtility.hotControl = 0;
}
current.Use();
}
return;
}
goto IL_2D;
}
public virtual bool DragElement(TreeViewItem targetItem, Rect targetItemRect, bool firstItem)
{
if (targetItem == null)
{
if (this.m_DropData != null)
{
this.m_DropData.dropTargetControlID = 0;
this.m_DropData.rowMarkerControlID = 0;
}
bool flag = Event.current.type == EventType.DragPerform;
DragAndDrop.visualMode = this.DoDrag(null, null, flag, TreeViewDragging.DropPosition.Below);
if (DragAndDrop.visualMode != DragAndDropVisualMode.None && flag)
{
this.FinalizeDragPerformed(true);
}
return(false);
}
Vector2 mousePosition = Event.current.mousePosition;
bool flag2 = this.m_TreeView.data.CanBeParent(targetItem);
Rect rect = targetItemRect;
float num = (!flag2) ? (targetItemRect.height * 0.5f) : this.m_TreeView.gui.halfDropBetweenHeight;
if (firstItem)
{
rect.yMin -= num;
}
rect.yMax += num;
if (!rect.Contains(mousePosition))
{
return(false);
}
TreeViewDragging.DropPosition dropPosition;
if (mousePosition.y >= targetItemRect.yMax - num)
{
dropPosition = TreeViewDragging.DropPosition.Below;
}
else if (firstItem && mousePosition.y <= targetItemRect.yMin + num)
{
dropPosition = TreeViewDragging.DropPosition.Above;
}
else
{
dropPosition = ((!flag2) ? TreeViewDragging.DropPosition.Above : TreeViewDragging.DropPosition.Upon);
}
TreeViewItem treeViewItem;
if (this.m_TreeView.data.IsExpanded(targetItem) && targetItem.hasChildren)
{
treeViewItem = targetItem;
}
else
{
treeViewItem = targetItem.parent;
}
DragAndDropVisualMode dragAndDropVisualMode = DragAndDropVisualMode.None;
if (Event.current.type == EventType.DragPerform)
{
if (dropPosition == TreeViewDragging.DropPosition.Upon)
{
dragAndDropVisualMode = this.DoDrag(targetItem, targetItem, true, dropPosition);
}
if (dragAndDropVisualMode == DragAndDropVisualMode.None && treeViewItem != null)
{
dragAndDropVisualMode = this.DoDrag(treeViewItem, targetItem, true, dropPosition);
}
if (dragAndDropVisualMode != DragAndDropVisualMode.None)
{
this.FinalizeDragPerformed(false);
}
else
{
this.DragCleanup(true);
this.m_TreeView.NotifyListenersThatDragEnded(null, false);
}
}
else
{
if (this.m_DropData == null)
{
this.m_DropData = new TreeViewDragging.DropData();
}
this.m_DropData.dropTargetControlID = 0;
this.m_DropData.rowMarkerControlID = 0;
int itemControlID = TreeView.GetItemControlID(targetItem);
this.HandleAutoExpansion(itemControlID, targetItem, targetItemRect, num, mousePosition);
if (dropPosition == TreeViewDragging.DropPosition.Upon)
{
dragAndDropVisualMode = this.DoDrag(targetItem, targetItem, false, dropPosition);
}
if (dragAndDropVisualMode != DragAndDropVisualMode.None)
{
this.m_DropData.dropTargetControlID = itemControlID;
DragAndDrop.visualMode = dragAndDropVisualMode;
}
else if (targetItem != null && treeViewItem != null)
{
dragAndDropVisualMode = this.DoDrag(treeViewItem, targetItem, false, dropPosition);
if (dragAndDropVisualMode != DragAndDropVisualMode.None)
{
this.drawRowMarkerAbove = (dropPosition == TreeViewDragging.DropPosition.Above);
this.m_DropData.rowMarkerControlID = itemControlID;
this.m_DropData.dropTargetControlID = ((!this.drawRowMarkerAbove) ? TreeView.GetItemControlID(treeViewItem) : 0);
DragAndDrop.visualMode = dragAndDropVisualMode;
}
}
}
Event.current.Use();
return(true);
}
public void HandleUnusedMouseEventsForNode(Rect rect, TreeViewItem item, bool firstItem)
{
int itemControlId = TreeView.GetItemControlID(item);
Event current = Event.current;
EventType typeForControl = current.GetTypeForControl(itemControlId);
switch (typeForControl)
{
case EventType.MouseDown:
if (!rect.Contains(Event.current.mousePosition))
{
break;
}
if (Event.current.button == 0)
{
GUIUtility.keyboardControl = this.m_KeyboardControlID;
this.Repaint();
if (Event.current.clickCount == 2)
{
if (this.itemDoubleClickedCallback != null)
{
this.itemDoubleClickedCallback(item.id);
}
}
else
{
if (this.dragging == null || this.dragging.CanStartDrag(item, this.m_DragSelection, Event.current.mousePosition))
{
this.m_DragSelection = this.GetNewSelection(item, true, false);
((DragAndDropDelay)GUIUtility.GetStateObject(typeof(DragAndDropDelay), itemControlId)).mouseDownPosition = Event.current.mousePosition;
}
GUIUtility.hotControl = itemControlId;
}
current.Use();
break;
}
if (Event.current.button != 1)
{
break;
}
bool keepMultiSelection = true;
this.SelectionClick(item, keepMultiSelection);
break;
case EventType.MouseUp:
if (GUIUtility.hotControl != itemControlId)
{
break;
}
GUIUtility.hotControl = 0;
this.m_DragSelection.Clear();
current.Use();
if (!rect.Contains(current.mousePosition))
{
break;
}
float contentIndent = this.gui.GetContentIndent(item);
Rect rect1 = new Rect(rect.x + contentIndent, rect.y, rect.width - contentIndent, rect.height);
List <int> selectedIds = this.state.selectedIDs;
if (this.m_AllowRenameOnMouseUp && selectedIds != null && (selectedIds.Count == 1 && selectedIds[0] == item.id) && (rect1.Contains(current.mousePosition) && !EditorGUIUtility.HasHolddownKeyModifiers(current)))
{
this.BeginNameEditing(0.5f);
break;
}
this.SelectionClick(item, false);
break;
case EventType.MouseDrag:
if (GUIUtility.hotControl != itemControlId || this.dragging == null)
{
break;
}
DragAndDropDelay stateObject = (DragAndDropDelay)GUIUtility.GetStateObject(typeof(DragAndDropDelay), itemControlId);
if (stateObject.CanStartDrag() && this.dragging.CanStartDrag(item, this.m_DragSelection, stateObject.mouseDownPosition))
{
this.dragging.StartDrag(item, this.m_DragSelection);
GUIUtility.hotControl = 0;
}
current.Use();
break;
default:
if (typeForControl != EventType.DragUpdated && typeForControl != EventType.DragPerform)
{
if (typeForControl != EventType.ContextClick || !rect.Contains(current.mousePosition) || this.contextClickItemCallback == null)
{
break;
}
this.contextClickItemCallback(item.id);
break;
}
if (this.dragging == null || !this.dragging.DragElement(item, rect, firstItem))
{
break;
}
GUIUtility.hotControl = 0;
break;
}
}