content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.weex.ui.view;
  
  import android.content.Context;
  import android.graphics.Canvas;
  import android.graphics.drawable.Drawable;
  import android.support.annotation.NonNull;
  import android.widget.FrameLayout;
  import org.apache.weex.ui.flat.widget.Widget;
  import org.apache.weex.utils.WXLogUtils;
  import org.apache.weex.utils.WXViewUtils;
  import java.util.List;
  
  public class BaseFrameLayout extends FrameLayout{
      private List<Widget> mWidgets;
  
      public BaseFrameLayout(Context context){
          super(context);
      }
  
      @Override
      protected void dispatchDraw(Canvas canvas) {
          try {
              dispatchDrawInterval(canvas);
          } catch (Throwable e) {
              WXLogUtils.e(WXLogUtils.getStackTrace(e));
          }
      }
  
      protected void dispatchDrawInterval(Canvas canvas) {
          if (mWidgets != null) {
              canvas.save();
              canvas.translate(getPaddingLeft(), getPaddingTop());
              for (Widget widget : mWidgets) {
                  widget.draw(canvas);
              }
              canvas.restore();
          } else {
              WXViewUtils.clipCanvasWithinBorderBox(this, canvas);
              super.dispatchDraw(canvas);
          }
      }
      public void mountFlatGUI(List<Widget> widgets){
          this.mWidgets = widgets;
          if (mWidgets != null) {
              setWillNotDraw(true);
          }
          invalidate();
      }
  
      public void unmountFlatGUI(){
          mWidgets = null;
          setWillNotDraw(false);
          invalidate();
      }
  
      @Override
      protected boolean verifyDrawable(@NonNull Drawable who) {
          return mWidgets != null || super.verifyDrawable(who);
      }
  
  }
  