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.animation;
  
  
  import android.util.Property;
  import android.view.View;
  import android.view.ViewGroup.LayoutParams;
  import org.apache.weex.ui.component.WXComponent;
  import org.apache.weex.ui.view.IRenderResult;
  
  /**
   * android.util.IntProperty<T> cannot be applied here, as it is only added at API 24.
   */
  abstract class LayoutParamsProperty extends Property<View, Integer> {
  
    LayoutParamsProperty() {
      super(Integer.class, "layoutParams");
    }
  
    @Override
    public Integer get(View object) {
      LayoutParams layoutParams;
      if (object != null && (layoutParams = object.getLayoutParams()) != null) {
        return getProperty(layoutParams);
      }
      return 0;
    }
  
    @Override
    public void set(View object, Integer value) {
      LayoutParams layoutParams;
      if (object != null && (layoutParams = object.getLayoutParams()) != null) {
        setProperty(layoutParams, value);
        if (object instanceof IRenderResult) {
          WXComponent component = ((IRenderResult) object).getComponent();
          if (component != null) {
              component.notifyNativeSizeChanged(layoutParams.width, layoutParams.height);
          }
        }
        object.requestLayout();
      }
    }
  
    protected abstract Integer getProperty(LayoutParams layoutParams);
  
    protected abstract void setProperty(LayoutParams layoutParams, Integer expected);
  }
  