Michael Jurka | 0b2bd8d | 2012-10-30 15:32:27 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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.settings; |
| 18 | |
| 19 | import android.appwidget.AppWidgetManager; |
| 20 | import android.appwidget.AppWidgetProviderInfo; |
| 21 | import android.content.Context; |
| 22 | import android.content.Intent; |
| 23 | import android.os.Bundle; |
| 24 | import android.os.Parcelable; |
| 25 | import android.util.Log; |
| 26 | |
| 27 | import java.text.Collator; |
| 28 | import java.util.ArrayList; |
| 29 | import java.util.Collections; |
| 30 | import java.util.Comparator; |
| 31 | import java.util.List; |
| 32 | |
| 33 | public class AppWidgetLoader<Item extends AppWidgetLoader.LabelledItem> { |
| 34 | private static final String TAG = "AppWidgetAdapter"; |
| 35 | private static final boolean LOGD = AppWidgetPickActivity.LOGD; |
| 36 | |
| 37 | private Context mContext; |
| 38 | private AppWidgetManager mAppWidgetManager; |
| 39 | ItemConstructor<Item> mItemConstructor; |
| 40 | |
| 41 | interface LabelledItem { |
| 42 | CharSequence getLabel(); |
| 43 | } |
| 44 | |
| 45 | public AppWidgetLoader(Context context, AppWidgetManager appWidgetManager, |
| 46 | ItemConstructor<Item> itemConstructor) { |
| 47 | mContext = context; |
| 48 | mAppWidgetManager = appWidgetManager; |
| 49 | mItemConstructor = itemConstructor; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Create list entries for any custom widgets requested through |
| 54 | * {@link AppWidgetManager#EXTRA_CUSTOM_INFO}. |
| 55 | */ |
| 56 | void putCustomAppWidgets(List<Item> items, Intent intent) { |
| 57 | // get and validate the extras they gave us |
| 58 | ArrayList<AppWidgetProviderInfo> customInfo = null; |
| 59 | ArrayList<Bundle> customExtras = null; |
| 60 | try_custom_items: { |
| 61 | customInfo = intent.getParcelableArrayListExtra(AppWidgetManager.EXTRA_CUSTOM_INFO); |
| 62 | if (customInfo == null || customInfo.size() == 0) { |
| 63 | Log.i(TAG, "EXTRA_CUSTOM_INFO not present."); |
| 64 | break try_custom_items; |
| 65 | } |
| 66 | |
| 67 | int customInfoSize = customInfo.size(); |
| 68 | for (int i=0; i<customInfoSize; i++) { |
| 69 | Parcelable p = customInfo.get(i); |
| 70 | if (p == null || !(p instanceof AppWidgetProviderInfo)) { |
| 71 | customInfo = null; |
| 72 | Log.e(TAG, "error using EXTRA_CUSTOM_INFO index=" + i); |
| 73 | break try_custom_items; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | customExtras = intent.getParcelableArrayListExtra(AppWidgetManager.EXTRA_CUSTOM_EXTRAS); |
| 78 | if (customExtras == null) { |
| 79 | customInfo = null; |
| 80 | Log.e(TAG, "EXTRA_CUSTOM_INFO without EXTRA_CUSTOM_EXTRAS"); |
| 81 | break try_custom_items; |
| 82 | } |
| 83 | |
| 84 | int customExtrasSize = customExtras.size(); |
| 85 | if (customInfoSize != customExtrasSize) { |
| 86 | customInfo = null; |
| 87 | customExtras = null; |
| 88 | Log.e(TAG, "list size mismatch: EXTRA_CUSTOM_INFO: " + customInfoSize |
| 89 | + " EXTRA_CUSTOM_EXTRAS: " + customExtrasSize); |
| 90 | break try_custom_items; |
| 91 | } |
| 92 | |
| 93 | |
| 94 | for (int i=0; i<customExtrasSize; i++) { |
| 95 | Parcelable p = customExtras.get(i); |
| 96 | if (p == null || !(p instanceof Bundle)) { |
| 97 | customInfo = null; |
| 98 | customExtras = null; |
| 99 | Log.e(TAG, "error using EXTRA_CUSTOM_EXTRAS index=" + i); |
| 100 | break try_custom_items; |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | if (LOGD) Log.d(TAG, "Using " + customInfo.size() + " custom items"); |
| 106 | putAppWidgetItems(customInfo, customExtras, items, 0, true); |
| 107 | } |
| 108 | |
| 109 | |
| 110 | /** |
| 111 | * Create list entries for the given {@link AppWidgetProviderInfo} widgets, |
| 112 | * inserting extras if provided. |
| 113 | */ |
| 114 | void putAppWidgetItems(List<AppWidgetProviderInfo> appWidgets, |
| 115 | List<Bundle> customExtras, List<Item> items, int categoryFilter, |
| 116 | boolean ignoreFilter) { |
| 117 | if (appWidgets == null) return; |
| 118 | final int size = appWidgets.size(); |
| 119 | for (int i = 0; i < size; i++) { |
| 120 | AppWidgetProviderInfo info = appWidgets.get(i); |
| 121 | |
| 122 | // We remove any widgets whose category isn't included in the filter |
| 123 | if (!ignoreFilter && (info.widgetCategory & categoryFilter) == 0) { |
| 124 | continue; |
| 125 | } |
| 126 | |
| 127 | Item item = mItemConstructor.createItem(mContext, info, |
| 128 | customExtras != null ? customExtras.get(i) : null); |
| 129 | |
| 130 | items.add(item); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | public interface ItemConstructor<Item> { |
| 135 | Item createItem(Context context, AppWidgetProviderInfo info, Bundle extras); |
| 136 | } |
| 137 | |
| 138 | |
| 139 | /** |
| 140 | * Build and return list of items to be shown in dialog. This will mix both |
| 141 | * installed {@link AppWidgetProviderInfo} and those provided through |
| 142 | * {@link AppWidgetManager#EXTRA_CUSTOM_INFO}, sorting them alphabetically. |
| 143 | */ |
| 144 | protected List<Item> getItems(Intent intent) { |
| 145 | boolean sortCustomAppWidgets = |
| 146 | intent.getBooleanExtra(AppWidgetManager.EXTRA_CUSTOM_SORT, true); |
| 147 | |
| 148 | List<Item> items = new ArrayList<Item>(); |
| 149 | |
| 150 | // Default category is home screen |
| 151 | int categoryFilter = intent.getIntExtra(AppWidgetManager.EXTRA_CATEGORY_FILTER, |
| 152 | AppWidgetProviderInfo.WIDGET_CATEGORY_HOME_SCREEN); |
| 153 | |
| 154 | putInstalledAppWidgets(items, categoryFilter); |
| 155 | |
| 156 | // Sort all items together by label |
| 157 | if (sortCustomAppWidgets) { |
| 158 | putCustomAppWidgets(items, intent); |
| 159 | } |
| 160 | Collections.sort(items, new Comparator<Item>() { |
| 161 | Collator mCollator = Collator.getInstance(); |
| 162 | |
| 163 | public int compare(Item lhs, Item rhs) { |
| 164 | return mCollator.compare(lhs.getLabel(), rhs.getLabel()); |
| 165 | } |
| 166 | }); |
| 167 | if (!sortCustomAppWidgets) { |
| 168 | List<Item> customItems = new ArrayList<Item>(); |
| 169 | putCustomAppWidgets(customItems, intent); |
| 170 | items.addAll(customItems); |
| 171 | } |
| 172 | return items; |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Create list entries for installed {@link AppWidgetProviderInfo} widgets. |
| 177 | */ |
| 178 | void putInstalledAppWidgets(List<Item> items, int categoryFilter) { |
Adam Cohen | 441588d | 2012-11-28 16:37:44 -0800 | [diff] [blame] | 179 | List<AppWidgetProviderInfo> installed = |
| 180 | mAppWidgetManager.getInstalledProviders(categoryFilter); |
Michael Jurka | 0b2bd8d | 2012-10-30 15:32:27 -0700 | [diff] [blame] | 181 | putAppWidgetItems(installed, null, items, categoryFilter, false); |
| 182 | } |
| 183 | } |