public int ChildrenSelected() // -1: Any, 0: None, 1: All
{
bool any = false, all = true;
foreach (AssetItem asset in children)
{
if (asset is FolderItem)
{
FolderItem folder = (FolderItem)asset;
int cs = folder.ChildrenSelected();
any |= cs != 0;
all &= cs == 1;
}
else
{
any |= asset.selected;
all &= asset.selected;
}
if (any && !all)
{
break;
}
}
return(any ? (all ? 1 : -1) : 0);
}
void DoItemGUI(AssetItem item)
{
GUIContent content = new GUIContent(EditorGUIUtility.ObjectContent(item.asset, item.asset.GetType()));
content.text = item.name;
if (item is FolderItem)
{
FolderItem folder = (FolderItem)item;
Rect fRect = EditorGUILayout.BeginHorizontal();
int childrenSelected = folder.ChildrenSelected();
EditorGUI.showMixedValue = childrenSelected < 0; //Some but not all
folder.foldout = ContentlessFoldout.DoFoldout(folder.foldout);
GUI.changed = false;
bool selectFolder = EditorGUILayout.ToggleLeft(content, folder.selected);
if (GUI.changed)
{
if (EditorGUI.showMixedValue) //selectFolder == true if toggle was clicked
{
if (selectFolder)
{
folder.selected = false;
folder.DeselectChildren();
}
}
else
{
if (folder.selected = selectFolder)
{
folder.SelectChildren();
}
else
{
folder.DeselectChildren();
}
}
}
folder.selected = childrenSelected != 0;
EditorGUILayout.EndHorizontal();
if (Event.current.type == EventType.ContextClick && fRect.Contains(Event.current.mousePosition))
{
FolderContextMenu(folder);
}
if (folder.foldout)
{
EditorGUI.indentLevel++;
foreach (AssetItem i in folder.children)
{
DoItemGUI(i);
}
EditorGUI.indentLevel--;
}
}
else
{
Rect iRect = EditorGUILayout.BeginHorizontal();
EditorGUI.showMixedValue = false;
GUILayout.Space(20f);
item.selected = EditorGUILayout.ToggleLeft(content, item.selected);
EditorGUILayout.EndHorizontal();
if (Event.current.type == EventType.ContextClick && iRect.Contains(Event.current.mousePosition))
{
AssetContextMenu(item);
}
}
}
