content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed 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 com.android.setupwizardlib.items;
  
  import android.content.Context;
  import android.util.AttributeSet;
  
  /**
   * Abstract implementation of an item, which implements {@link IItem} and takes care of implementing
   * methods for {@link ItemHierarchy} for items representing itself.
   */
  public abstract class AbstractItem extends AbstractItemHierarchy implements IItem {
  
    public AbstractItem() {
      super();
    }
  
    public AbstractItem(Context context, AttributeSet attrs) {
      super(context, attrs);
    }
  
    @Override
    public int getCount() {
      return 1;
    }
  
    @Override
    public IItem getItemAt(int position) {
      return this;
    }
  
    @Override
    public ItemHierarchy findItemById(int id) {
      if (id == getId()) {
        return this;
      }
      return null;
    }
  
    /**
     * Convenience method to notify the adapter that the contents of this item has changed. This only
     * includes non-structural changes. Changes that causes the item to be removed should use the
     * other notification methods.
     *
     * @see #notifyItemRangeChanged(int, int)
     * @see #notifyItemRangeInserted(int, int)
     * @see #notifyItemRangeRemoved(int, int)
     */
    public void notifyItemChanged() {
      notifyItemRangeChanged(0, 1);
    }
  }
  