//...
static void Internal_MarkLastField(Texture2D icon, string tooltip)
{
var rect = GUILayoutUtility.GetLastRect();
rect.x += UnityEditor.EditorGUIUtility.labelWidth;
rect.x -= 16;
rect.y += 1;
rect.width = 16;
rect.height = 16;
GUI.Box(rect, EditorUtils.GetTempContent(null, icon, tooltip), GUIStyle.none);
}
/// A simple reorderable list. Pass the list and a function to call for GUI. The callback comes with the current iterated element index in the list
public static IList ReorderableList(IList list, ReorderableListOptions options, ReorderableListCallback GUICallback)
{
if (list == null)
{
return(null);
}
var listType = list.GetType();
var argType = listType.GetEnumerableElementType();
if (argType == null)
{
return(list);
}
var e = Event.current;
if (options.allowAdd)
{
var dropRefs = DragAndDrop.objectReferences;
//Drag And Drop.
if (dropRefs.Length > 0)
{
if (dropRefs.Any(r => argType.IsAssignableFrom(r.GetType()) || (r.GetType() == typeof(GameObject) && typeof(Component).IsAssignableFrom(argType))))
{
var dropRect = GUILayoutUtility.GetRect(0, 20, GUILayout.ExpandWidth(true));
dropRect.xMin += 5;
dropRect.xMax -= 5;
Styles.Draw(dropRect, Styles.roundedBox);
GUI.Box(dropRect, "Drop Here to Enlist", Styles.centerLabel);
if (dropRect.Contains(e.mousePosition))
{
if (e.type == EventType.DragUpdated)
{
DragAndDrop.visualMode = DragAndDropVisualMode.Copy;
e.Use();
}
if (e.type == EventType.DragPerform)
{
for (var i = 0; i < dropRefs.Length; i++)
{
var dropRef = dropRefs[i];
var dropRefType = dropRef.GetType();
if (argType.IsAssignableFrom(dropRefType))
{
UndoUtility.RecordObject(options.unityObjectContext, "Drag Add Item");
list.Add(dropRef);
GUI.changed = true;
UndoUtility.SetDirty(options.unityObjectContext);
continue;
}
if (dropRefType == typeof(GameObject) && typeof(Component).IsAssignableFrom(argType))
{
var componentToAdd = (dropRef as GameObject).GetComponent(argType);
if (componentToAdd != null)
{
UndoUtility.RecordObject(options.unityObjectContext, "Drag Add Item");
list.Add(componentToAdd);
GUI.changed = true;
UndoUtility.SetDirty(options.unityObjectContext);
}
continue;
}
}
e.Use();
}
}
}
}
//Add new default element
if (dropRefs.Length == 0)
{
if (GUILayout.Button("Add Element"))
{
UndoUtility.RecordObject(options.unityObjectContext, "Add Item");
var o = argType.IsValueType ? argType.CreateObjectUninitialized() : null;
if (listType.IsArray)
{
list = ReflectionTools.Resize((System.Array)list, list.Count + 1);
}
else
{
list.Add(o);
}
GUI.changed = true;
UndoUtility.SetDirty(options.unityObjectContext);
return(list);
}
}
}
if (list.Count == 0)
{
return(list);
}
for (var i = 0; i < list.Count; i++)
{
GUILayout.BeginHorizontal();
GUILayout.Space(16);
GUILayout.BeginVertical();
GUICallback(i, pickedListIndex == i && pickedList == list);
GUILayout.EndVertical();
var lastRect = GUILayoutUtility.GetLastRect();
var pickRect = Rect.MinMaxRect(lastRect.xMin - 16, lastRect.yMin, lastRect.xMin, lastRect.yMax);
GUI.color = new Color(1, 1, 1, 0.5f);
GUI.Label(pickRect, options.blockReorder ? EditorUtils.GetTempContent("■", null, "Re-Ordering Is Disabled") : EditorUtils.GetTempContent("☰"), Styles.centerLabel);
GUI.color = Color.white;
if (options.customItemMenu != null)
{
GUILayout.Space(18);
var buttonRect = Rect.MinMaxRect(lastRect.xMax, lastRect.yMin, lastRect.xMax + 22, lastRect.yMax + 1);
EditorGUIUtility.AddCursorRect(buttonRect, MouseCursor.Link);
GUI.color = EditorGUIUtility.isProSkin ? Color.white : Color.grey;
if (GUI.Button(buttonRect, Icons.gearPopupIcon, Styles.centerLabel))
{
UndoUtility.RecordObject(options.unityObjectContext, "Menu Item");
options.customItemMenu(i).ShowAsContext();
GUI.changed = true;
UndoUtility.SetDirty(options.unityObjectContext);
}
GUI.color = Color.white;
}
if (options.allowRemove)
{
GUILayout.Space(20);
var buttonRect = Rect.MinMaxRect(lastRect.xMax + 2, lastRect.yMin, lastRect.xMax + 20, lastRect.yMax);
if (GUI.Button(buttonRect, "X"))
{
UndoUtility.RecordObject(options.unityObjectContext, "Remove Item");
if (listType.IsArray)
{
list = ReflectionTools.Resize((System.Array)list, list.Count - 1);
}
else
{
list.RemoveAt(i);
}
GUI.changed = true;
UndoUtility.SetDirty(options.unityObjectContext);
}
}
GUILayout.EndHorizontal();
GUI.color = Color.white;
GUI.backgroundColor = Color.white;
if (!options.blockReorder)
{
EditorGUIUtility.AddCursorRect(pickRect, MouseCursor.MoveArrow);
}
var boundRect = GUILayoutUtility.GetLastRect();
if (pickRect.Contains(e.mousePosition) && e.type == EventType.MouseDown && !options.blockReorder)
{
pickedList = list;
pickedListIndex = i;
e.Use();
}
if (pickedList == list)
{
if (pickedListIndex == i)
{
GUI.Box(boundRect, string.Empty);
}
if (pickedListIndex != -1 && pickedListIndex != i && boundRect.Contains(e.mousePosition))
{
var markRect = new Rect(boundRect.x, boundRect.y - 2, boundRect.width, 2);
if (pickedListIndex < i)
{
markRect.y = boundRect.yMax - 2;
}
GUI.DrawTexture(markRect, Texture2D.whiteTexture);
if (e.type == EventType.MouseUp)
{
UndoUtility.RecordObject(options.unityObjectContext, "Reorder Item");
var pickObj = list[pickedListIndex];
list.RemoveAt(pickedListIndex);
list.Insert(i, pickObj);
GUI.changed = true;
UndoUtility.SetDirty(options.unityObjectContext);
pickedList = null;
pickedListIndex = -1;
e.Use();
}
}
}
}
//just rest in case out of rect
if (e.rawType == EventType.MouseUp)
{
if (list == pickedList)
{
pickedList = null;
pickedListIndex = -1;
}
}
return(list);
}