1 /******************************************************************************* 2 * Copyright (C) 2012 Google Inc. 3 * Licensed to The Android Open Source Project. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 *******************************************************************************/ 17 18 package com.android.mail.ui; 19 20 import android.view.View; 21 import android.view.ViewGroup; 22 import android.widget.Adapter; 23 import android.widget.BaseAdapter; 24 25 import java.util.ArrayList; 26 27 public class SeparatedFolderListAdapter extends BaseAdapter { 28 29 private final ArrayList<FolderSelectorAdapter> mSections = 30 new ArrayList<FolderSelectorAdapter>(); 31 public final static int TYPE_SECTION_HEADER = 0; 32 public final static int TYPE_ITEM = 1; 33 34 public void addSection(FolderSelectorAdapter adapter) { 35 mSections.add(adapter); 36 } 37 38 @Override 39 public Object getItem(int position) { 40 for (FolderSelectorAdapter adapter : mSections) { 41 int size = adapter.getCount(); 42 43 // check if position inside this section 44 if (position == 0 || position < size) 45 return adapter.getItem(position); 46 47 // otherwise jump into next section 48 position -= size; 49 } 50 return null; 51 } 52 53 @Override 54 public int getCount() { 55 // total together all sections, plus one for each section header 56 int total = 0; 57 for (FolderSelectorAdapter adapter : mSections) { 58 total += adapter.getCount(); 59 } 60 return total; 61 } 62 63 @Override 64 public int getViewTypeCount() { 65 // assume that headers count as one, then total all sections 66 int total = 0; 67 for (Adapter adapter : mSections) 68 total += adapter.getViewTypeCount(); 69 return total; 70 } 71 72 @Override 73 public int getItemViewType(int position) { 74 int type = 0; 75 for (FolderSelectorAdapter adapter : mSections) { 76 int size = adapter.getCount(); 77 // check if position inside this section 78 if (position == 0 || position < size) { 79 return type + adapter.getItemViewType(position); 80 } 81 82 // otherwise jump into next section 83 position -= size; 84 type += adapter.getViewTypeCount(); 85 } 86 return -1; 87 } 88 89 @Override 90 public boolean areAllItemsEnabled() { 91 return false; 92 } 93 94 @Override 95 public boolean isEnabled(int position) { 96 return (getItemViewType(position) != TYPE_SECTION_HEADER); 97 } 98 99 @Override 100 public View getView(int position, View convertView, ViewGroup parent) { 101 for (FolderSelectorAdapter adapter : mSections) { 102 int size = adapter.getCount(); 103 if (position == 0 || position < size) { 104 return adapter.getView(position, convertView, parent); 105 } 106 // otherwise jump into next section 107 position -= size; 108 } 109 return null; 110 } 111 112 @Override 113 public long getItemId(int position) { 114 return position; 115 } 116 117 } 118
