Add behavior list component

source/Context/Popups.ts

@@ -43,6 +43,7 @@ class Popup<P extends IAnyObject = IAnyObject> {
     public isResizeMouseDown: boolean = false;
     public isResizeOverFlowX: boolean = false;
     public isResizeOverFlowY: boolean = false;
+    public isInit = false;
 
     /**
      * 是否关闭
@@ -129,6 +130,14 @@ class PopupController extends Emitter<IPopupControllerEvent> {
      */
     public popups: Popup[] = [];
 
+    /**
+     * 指定弹窗
+     */
+    public topping(popup: Popup) {
+        popup.index = Infinity;
+        this.sortPopup();
+    }
+
     /**
      * 排序并重置序号
      */