added index to view

haxework/gui/GroupView.hx

@@ -36,7 +36,12 @@ class GroupView extends SpriteView implements IGroupView<Sprite> {
 
   override public function update():Void {
     layout.place(this, views);
-    for (view in views) view.update();
+    for (view in views) {
+      view.update();
+      if (view.index > -1) {
+        content.setChildIndex(view.content, view.index);
+      }
+    }
     super.update();
   }
 

haxework/gui/IView.hx

@@ -53,6 +53,7 @@ interface IView<C:Content> {
   public var inLayout(default, set):Bool;
 
   public var visible(default, set):Bool;
+  public var index(default, set):Int;
 
   public function update():Void;
   public function invalidate():Void;

haxework/gui/View.hx

@@ -52,6 +52,7 @@ class View<C:Content> implements IView<C> {
   public var inLayout(default, set):Bool;
 
   public var visible(default, set):Bool;
+  public var index(default, set):Int;
 
   public function new(content:C) {
     id = Type.getClassName(Type.getClass(this)) + counter++;
@@ -65,6 +66,7 @@ class View<C:Content> implements IView<C> {
     hAlign = HAlign.NONE;
     inLayout = true;
     visible = true;
+    index = -1;
   }
 
   private function currentSkin():ISkin<C, IView<C>> {
@@ -261,6 +263,14 @@ class View<C:Content> implements IView<C> {
     }
     return visible;
   }
+
+  private function set_index(value:Int):Int {
+    if (index != value) {
+      index = value;
+      invalidateParent();
+    }
+    return index;
+  }
 }