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 */ 16package com.android.internal.view.menu; 17 18import android.view.LayoutInflater; 19import android.view.View; 20import android.view.ViewGroup; 21import android.widget.BaseAdapter; 22 23import java.util.ArrayList; 24 25public class MenuAdapter extends BaseAdapter { 26 static final int ITEM_LAYOUT = com.android.internal.R.layout.popup_menu_item_layout; 27 28 MenuBuilder mAdapterMenu; 29 30 private int mExpandedIndex = -1; 31 32 private boolean mForceShowIcon; 33 private final boolean mOverflowOnly; 34 private final LayoutInflater mInflater; 35 36 public MenuAdapter(MenuBuilder menu, LayoutInflater inflater, boolean overflowOnly) { 37 mOverflowOnly = overflowOnly; 38 mInflater = inflater; 39 mAdapterMenu = menu; 40 findExpandedIndex(); 41 } 42 43 public boolean getForceShowIcon() { 44 return mForceShowIcon; 45 } 46 47 public void setForceShowIcon(boolean forceShow) { 48 mForceShowIcon = forceShow; 49 } 50 51 public int getCount() { 52 ArrayList<MenuItemImpl> items = mOverflowOnly ? 53 mAdapterMenu.getNonActionItems() : mAdapterMenu.getVisibleItems(); 54 if (mExpandedIndex < 0) { 55 return items.size(); 56 } 57 return items.size() - 1; 58 } 59 60 public MenuBuilder getAdapterMenu() { 61 return mAdapterMenu; 62 } 63 64 public MenuItemImpl getItem(int position) { 65 ArrayList<MenuItemImpl> items = mOverflowOnly ? 66 mAdapterMenu.getNonActionItems() : mAdapterMenu.getVisibleItems(); 67 if (mExpandedIndex >= 0 && position >= mExpandedIndex) { 68 position++; 69 } 70 return items.get(position); 71 } 72 73 public long getItemId(int position) { 74 // Since a menu item's ID is optional, we'll use the position as an 75 // ID for the item in the AdapterView 76 return position; 77 } 78 79 public View getView(int position, View convertView, ViewGroup parent) { 80 if (convertView == null) { 81 convertView = mInflater.inflate(ITEM_LAYOUT, parent, false); 82 } 83 84 MenuView.ItemView itemView = (MenuView.ItemView) convertView; 85 if (mForceShowIcon) { 86 ((ListMenuItemView) convertView).setForceShowIcon(true); 87 } 88 itemView.initialize(getItem(position), 0); 89 return convertView; 90 } 91 92 void findExpandedIndex() { 93 final MenuItemImpl expandedItem = mAdapterMenu.getExpandedItem(); 94 if (expandedItem != null) { 95 final ArrayList<MenuItemImpl> items = mAdapterMenu.getNonActionItems(); 96 final int count = items.size(); 97 for (int i = 0; i < count; i++) { 98 final MenuItemImpl item = items.get(i); 99 if (item == expandedItem) { 100 mExpandedIndex = i; 101 return; 102 } 103 } 104 } 105 mExpandedIndex = -1; 106 } 107 108 @Override 109 public void notifyDataSetChanged() { 110 findExpandedIndex(); 111 super.notifyDataSetChanged(); 112 } 113}