1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.setupwizardlib.items; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 22 /** 23 * Abstract implementation of an item, which implements {@link IItem} and takes care of implementing 24 * methods for {@link ItemHierarchy} for items representing itself. 25 */ 26 public abstract class AbstractItem extends AbstractItemHierarchy implements IItem { 27 28 public AbstractItem() { 29 super(); 30 } 31 32 public AbstractItem(Context context, AttributeSet attrs) { 33 super(context, attrs); 34 } 35 36 @Override 37 public int getCount() { 38 return 1; 39 } 40 41 @Override 42 public IItem getItemAt(int position) { 43 return this; 44 } 45 46 @Override 47 public ItemHierarchy findItemById(int id) { 48 if (id == getId()) { 49 return this; 50 } 51 return null; 52 } 53 54 /** 55 * Convenience method to notify the adapter that the contents of this item has changed. This 56 * only includes non-structural changes. Changes that causes the item to be removed should use 57 * the other notification methods. 58 * 59 * @see #notifyItemRangeChanged(int, int) 60 * @see #notifyItemRangeInserted(int, int) 61 * @see #notifyItemRangeRemoved(int, int) 62 */ 63 public void notifyItemChanged() { 64 notifyItemRangeChanged(0, 1); 65 } 66 } 67
