Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 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.documentsui.dirlist; |
| 18 | |
Steve McKay | d080506 | 2016-09-15 14:30:38 -0700 | [diff] [blame] | 19 | import static com.android.documentsui.base.DocumentInfo.getCursorInt; |
| 20 | import static com.android.documentsui.base.DocumentInfo.getCursorString; |
Steve McKay | d9caa6a | 2016-09-15 16:36:45 -0700 | [diff] [blame] | 21 | import static com.android.documentsui.base.State.MODE_GRID; |
| 22 | import static com.android.documentsui.base.State.MODE_LIST; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 23 | |
| 24 | import android.database.Cursor; |
| 25 | import android.provider.DocumentsContract.Document; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 26 | import android.util.Log; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 27 | import android.view.ViewGroup; |
| 28 | |
Garfield Tan | e967033 | 2017-03-06 18:33:23 -0800 | [diff] [blame] | 29 | import com.android.documentsui.Model; |
Steve McKay | 990f76e | 2016-09-16 12:36:58 -0700 | [diff] [blame] | 30 | import com.android.documentsui.base.EventListener; |
Steve McKay | d9caa6a | 2016-09-15 16:36:45 -0700 | [diff] [blame] | 31 | import com.android.documentsui.base.State; |
Garfield Tan | e967033 | 2017-03-06 18:33:23 -0800 | [diff] [blame] | 32 | import com.android.documentsui.Model.Update; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 33 | |
| 34 | import java.util.ArrayList; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 35 | import java.util.List; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 36 | |
| 37 | /** |
| 38 | * Adapts from dirlist.Model to something RecyclerView understands. |
| 39 | */ |
| 40 | final class ModelBackedDocumentsAdapter extends DocumentsAdapter { |
| 41 | |
Ben Kwa | f4b0ff6 | 2016-02-02 12:11:10 -0800 | [diff] [blame] | 42 | private static final String TAG = "ModelBackedDocuments"; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 43 | |
| 44 | // Provides access to information needed when creating and view holders. This |
| 45 | // isn't an ideal pattern (more transitive dependency stuff) but good enough for now. |
| 46 | private final Environment mEnv; |
| 47 | private final IconHelper mIconHelper; // a transitive dependency of the holders. |
| 48 | |
| 49 | /** |
| 50 | * An ordered list of model IDs. This is the data structure that determines what shows up in |
| 51 | * the UI, and where. |
| 52 | */ |
| 53 | private List<String> mModelIds = new ArrayList<>(); |
Steve McKay | 990f76e | 2016-09-16 12:36:58 -0700 | [diff] [blame] | 54 | private EventListener<Model.Update> mModelUpdateListener; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 55 | |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 56 | public ModelBackedDocumentsAdapter(Environment env, IconHelper iconHelper) { |
| 57 | mEnv = env; |
| 58 | mIconHelper = iconHelper; |
Steve McKay | 990f76e | 2016-09-16 12:36:58 -0700 | [diff] [blame] | 59 | |
| 60 | mModelUpdateListener = new EventListener<Model.Update>() { |
| 61 | @Override |
| 62 | public void accept(Update event) { |
Ben Lin | f8f06e9 | 2017-01-27 17:15:48 -0800 | [diff] [blame] | 63 | if (event.hasException()) { |
| 64 | onModelUpdateFailed(event.getException()); |
Steve McKay | 990f76e | 2016-09-16 12:36:58 -0700 | [diff] [blame] | 65 | } else { |
| 66 | onModelUpdate(mEnv.getModel()); |
| 67 | } |
| 68 | } |
| 69 | }; |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | EventListener<Update> getModelUpdateListener() { |
| 74 | return mModelUpdateListener; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | @Override |
| 78 | public DocumentHolder onCreateViewHolder(ViewGroup parent, int viewType) { |
| 79 | DocumentHolder holder = null; |
| 80 | final State state = mEnv.getDisplayState(); |
| 81 | switch (state.derivedMode) { |
| 82 | case MODE_GRID: |
| 83 | switch (viewType) { |
| 84 | case ITEM_TYPE_DIRECTORY: |
| 85 | holder = new GridDirectoryHolder(mEnv.getContext(), parent); |
| 86 | break; |
| 87 | case ITEM_TYPE_DOCUMENT: |
| 88 | holder = new GridDocumentHolder(mEnv.getContext(), parent, mIconHelper); |
| 89 | break; |
| 90 | default: |
| 91 | throw new IllegalStateException("Unsupported layout type."); |
| 92 | } |
| 93 | break; |
| 94 | case MODE_LIST: |
| 95 | holder = new ListDocumentHolder(mEnv.getContext(), parent, mIconHelper); |
| 96 | break; |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 97 | default: |
| 98 | throw new IllegalStateException("Unsupported layout mode."); |
| 99 | } |
| 100 | |
| 101 | mEnv.initDocumentHolder(holder); |
| 102 | return holder; |
| 103 | } |
| 104 | |
| 105 | @Override |
| 106 | public void onBindViewHolder(DocumentHolder holder, int position, List<Object> payload) { |
| 107 | if (payload.contains(SELECTION_CHANGED_MARKER)) { |
| 108 | final boolean selected = mEnv.isSelected(mModelIds.get(position)); |
Ben Kwa | 4c2f1a6 | 2016-03-16 12:13:21 -0700 | [diff] [blame] | 109 | holder.setSelected(selected, true); |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 110 | } else { |
| 111 | onBindViewHolder(holder, position); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | public void onBindViewHolder(DocumentHolder holder, int position) { |
| 117 | String modelId = mModelIds.get(position); |
| 118 | Cursor cursor = mEnv.getModel().getItem(modelId); |
Steve McKay | 358c3ec | 2016-10-21 09:16:57 -0700 | [diff] [blame] | 119 | holder.bind(cursor, modelId); |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 120 | |
| 121 | final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| 122 | final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); |
| 123 | |
Steve McKay | 2e74440 | 2016-03-08 11:37:22 -0800 | [diff] [blame] | 124 | boolean enabled = mEnv.isDocumentEnabled(docMimeType, docFlags); |
| 125 | boolean selected = mEnv.isSelected(modelId); |
| 126 | if (!enabled) { |
| 127 | assert(!selected); |
| 128 | } |
| 129 | holder.setEnabled(enabled); |
Ben Kwa | 4c2f1a6 | 2016-03-16 12:13:21 -0700 | [diff] [blame] | 130 | holder.setSelected(mEnv.isSelected(modelId), false); |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 131 | |
| 132 | mEnv.onBindDocumentHolder(holder, cursor); |
| 133 | } |
| 134 | |
| 135 | @Override |
| 136 | public int getItemCount() { |
| 137 | return mModelIds.size(); |
| 138 | } |
| 139 | |
Steve McKay | 990f76e | 2016-09-16 12:36:58 -0700 | [diff] [blame] | 140 | private void onModelUpdate(Model model) { |
Tomasz Mikolajewski | f27c274 | 2016-03-07 18:01:45 +0900 | [diff] [blame] | 141 | String[] modelIds = model.getModelIds(); |
| 142 | mModelIds = new ArrayList<>(modelIds.length); |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 143 | for (String id : modelIds) { |
Ben Lin | 7b38f34 | 2016-12-14 11:52:35 -0800 | [diff] [blame] | 144 | mModelIds.add(id); |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 145 | } |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 146 | } |
| 147 | |
Steve McKay | 990f76e | 2016-09-16 12:36:58 -0700 | [diff] [blame] | 148 | private void onModelUpdateFailed(Exception e) { |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 149 | Log.w(TAG, "Model update failed.", e); |
| 150 | mModelIds.clear(); |
| 151 | } |
| 152 | |
| 153 | @Override |
| 154 | public String getModelId(int adapterPosition) { |
| 155 | return mModelIds.get(adapterPosition); |
| 156 | } |
| 157 | |
| 158 | @Override |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 159 | public List<String> getModelIds() { |
| 160 | return mModelIds; |
| 161 | } |
| 162 | |
| 163 | @Override |
| 164 | public int getItemViewType(int position) { |
| 165 | return isDirectory(mEnv.getModel(), position) |
| 166 | ? ITEM_TYPE_DIRECTORY |
| 167 | : ITEM_TYPE_DOCUMENT; |
| 168 | } |
| 169 | |
Steve McKay | 4f78ba6 | 2016-10-04 16:48:49 -0700 | [diff] [blame] | 170 | /** |
| 171 | * @return true if the item type is either document or directory, false for all other |
| 172 | * possible types. |
| 173 | */ |
| 174 | public static boolean isContentType(int type) { |
| 175 | switch (type) { |
| 176 | case ModelBackedDocumentsAdapter.ITEM_TYPE_DOCUMENT: |
| 177 | case ModelBackedDocumentsAdapter.ITEM_TYPE_DIRECTORY: |
| 178 | return true; |
| 179 | } |
| 180 | return false; |
| 181 | } |
| 182 | |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 183 | @Override |
Steve McKay | e910403 | 2016-01-05 12:53:35 -0800 | [diff] [blame] | 184 | public void onItemSelectionChanged(String id) { |
Steve McKay | c5ecf89 | 2015-12-22 18:15:31 -0800 | [diff] [blame] | 185 | int position = mModelIds.indexOf(id); |
| 186 | |
| 187 | if (position >= 0) { |
| 188 | notifyItemChanged(position, SELECTION_CHANGED_MARKER); |
| 189 | } else { |
| 190 | Log.w(TAG, "Item change notification received for unknown item: " + id); |
| 191 | } |
| 192 | } |
| 193 | } |