1 /* 2 * Copyright (C) 2013 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.photos; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.net.Uri; 23 import android.os.AsyncTask; 24 import android.provider.MediaStore.Files.FileColumns; 25 import android.util.SparseBooleanArray; 26 import android.view.ActionMode; 27 import android.view.Menu; 28 import android.view.MenuInflater; 29 import android.view.MenuItem; 30 import android.widget.AbsListView.MultiChoiceModeListener; 31 import android.widget.ShareActionProvider; 32 import android.widget.ShareActionProvider.OnShareTargetSelectedListener; 33 34 import com.android.gallery3d.R; 35 import com.android.gallery3d.app.TrimVideo; 36 import com.android.gallery3d.data.MediaObject; 37 import com.android.gallery3d.filtershow.FilterShowActivity; 38 import com.android.gallery3d.util.GalleryUtils; 39 40 import java.util.ArrayList; 41 import java.util.List; 42 43 public class MultiChoiceManager implements MultiChoiceModeListener, 44 OnShareTargetSelectedListener, SelectionManager.SelectedUriSource { 45 46 public interface Provider { 47 public MultiChoiceManager getMultiChoiceManager(); 48 } 49 50 public interface Delegate { 51 public SparseBooleanArray getSelectedItemPositions(); 52 public int getSelectedItemCount(); 53 public int getItemMediaType(Object item); 54 public int getItemSupportedOperations(Object item); 55 public ArrayList<Uri> getSubItemUrisForItem(Object item); 56 public Uri getItemUri(Object item); 57 public Object getItemAtPosition(int position); 58 public Object getPathForItemAtPosition(int position); 59 public void deleteItemWithPath(Object itemPath); 60 } 61 62 private SelectionManager mSelectionManager; 63 private ShareActionProvider mShareActionProvider; 64 private ActionMode mActionMode; 65 private Context mContext; 66 private Delegate mDelegate; 67 68 private ArrayList<Uri> mSelectedShareableUrisArray = new ArrayList<Uri>(); 69 70 public MultiChoiceManager(Activity activity) { 71 mContext = activity; 72 mSelectionManager = new SelectionManager(activity); 73 } 74 75 public void setDelegate(Delegate delegate) { 76 if (mDelegate == delegate) { 77 return; 78 } 79 if (mActionMode != null) { 80 mActionMode.finish(); 81 } 82 mDelegate = delegate; 83 } 84 85 @Override 86 public ArrayList<Uri> getSelectedShareableUris() { 87 return mSelectedShareableUrisArray; 88 } 89 90 private void updateSelectedTitle(ActionMode mode) { 91 int count = mDelegate.getSelectedItemCount(); 92 mode.setTitle(mContext.getResources().getQuantityString( 93 R.plurals.number_of_items_selected, count, count)); 94 } 95 96 private String getItemMimetype(Object item) { 97 int type = mDelegate.getItemMediaType(item); 98 if (type == FileColumns.MEDIA_TYPE_IMAGE) { 99 return GalleryUtils.MIME_TYPE_IMAGE; 100 } else if (type == FileColumns.MEDIA_TYPE_VIDEO) { 101 return GalleryUtils.MIME_TYPE_VIDEO; 102 } else { 103 return GalleryUtils.MIME_TYPE_ALL; 104 } 105 } 106 107 @Override 108 public void onItemCheckedStateChanged(ActionMode mode, int position, long id, 109 boolean checked) { 110 updateSelectedTitle(mode); 111 Object item = mDelegate.getItemAtPosition(position); 112 113 int supported = mDelegate.getItemSupportedOperations(item); 114 115 if ((supported & MediaObject.SUPPORT_SHARE) > 0) { 116 ArrayList<Uri> subItems = mDelegate.getSubItemUrisForItem(item); 117 if (checked) { 118 mSelectedShareableUrisArray.addAll(subItems); 119 } else { 120 mSelectedShareableUrisArray.removeAll(subItems); 121 } 122 } 123 124 mSelectionManager.onItemSelectedStateChanged(mShareActionProvider, 125 mDelegate.getItemMediaType(item), 126 supported, 127 checked); 128 updateActionItemVisibilities(mode.getMenu(), 129 mSelectionManager.getSupportedOperations()); 130 } 131 132 private void updateActionItemVisibilities(Menu menu, int supportedOperations) { 133 MenuItem editItem = menu.findItem(R.id.menu_edit); 134 MenuItem deleteItem = menu.findItem(R.id.menu_delete); 135 MenuItem shareItem = menu.findItem(R.id.menu_share); 136 MenuItem cropItem = menu.findItem(R.id.menu_crop); 137 MenuItem trimItem = menu.findItem(R.id.menu_trim); 138 MenuItem muteItem = menu.findItem(R.id.menu_mute); 139 MenuItem setAsItem = menu.findItem(R.id.menu_set_as); 140 141 editItem.setVisible((supportedOperations & MediaObject.SUPPORT_EDIT) > 0); 142 deleteItem.setVisible((supportedOperations & MediaObject.SUPPORT_DELETE) > 0); 143 shareItem.setVisible((supportedOperations & MediaObject.SUPPORT_SHARE) > 0); 144 cropItem.setVisible((supportedOperations & MediaObject.SUPPORT_CROP) > 0); 145 trimItem.setVisible((supportedOperations & MediaObject.SUPPORT_TRIM) > 0); 146 muteItem.setVisible((supportedOperations & MediaObject.SUPPORT_MUTE) > 0); 147 setAsItem.setVisible((supportedOperations & MediaObject.SUPPORT_SETAS) > 0); 148 } 149 150 @Override 151 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 152 mSelectionManager.setSelectedUriSource(this); 153 mActionMode = mode; 154 MenuInflater inflater = mode.getMenuInflater(); 155 inflater.inflate(R.menu.gallery_multiselect, menu); 156 MenuItem menuItem = menu.findItem(R.id.menu_share); 157 mShareActionProvider = (ShareActionProvider) menuItem.getActionProvider(); 158 mShareActionProvider.setOnShareTargetSelectedListener(this); 159 updateSelectedTitle(mode); 160 return true; 161 } 162 163 @Override 164 public void onDestroyActionMode(ActionMode mode) { 165 // onDestroyActionMode gets called when the share target was selected, 166 // but apparently before the ArrayList is serialized in the intent 167 // so we can't clear the old one here. 168 mSelectedShareableUrisArray = new ArrayList<Uri>(); 169 mSelectionManager.onClearSelection(); 170 mSelectionManager.setSelectedUriSource(null); 171 mShareActionProvider = null; 172 mActionMode = null; 173 } 174 175 @Override 176 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 177 updateSelectedTitle(mode); 178 return false; 179 } 180 181 @Override 182 public boolean onShareTargetSelected(ShareActionProvider provider, Intent intent) { 183 mActionMode.finish(); 184 return false; 185 } 186 187 private static class BulkDeleteTask extends AsyncTask<Void, Void, Void> { 188 private Delegate mDelegate; 189 private List<Object> mPaths; 190 191 public BulkDeleteTask(Delegate delegate, List<Object> paths) { 192 mDelegate = delegate; 193 mPaths = paths; 194 } 195 196 @Override 197 protected Void doInBackground(Void... ignored) { 198 for (Object path : mPaths) { 199 mDelegate.deleteItemWithPath(path); 200 } 201 return null; 202 } 203 } 204 205 @Override 206 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 207 int actionItemId = item.getItemId(); 208 switch (actionItemId) { 209 case R.id.menu_delete: 210 BulkDeleteTask deleteTask = new BulkDeleteTask(mDelegate, 211 getPathsForSelectedItems()); 212 deleteTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); 213 mode.finish(); 214 return true; 215 case R.id.menu_edit: 216 case R.id.menu_crop: 217 case R.id.menu_trim: 218 case R.id.menu_mute: 219 case R.id.menu_set_as: 220 singleItemAction(getSelectedItem(), actionItemId); 221 mode.finish(); 222 return true; 223 default: 224 return false; 225 } 226 } 227 228 private void singleItemAction(Object item, int actionItemId) { 229 Intent intent = new Intent(); 230 String mime = getItemMimetype(item); 231 Uri uri = mDelegate.getItemUri(item); 232 switch (actionItemId) { 233 case R.id.menu_edit: 234 intent.setDataAndType(uri, mime) 235 .setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION) 236 .setAction(Intent.ACTION_EDIT); 237 mContext.startActivity(Intent.createChooser(intent, null)); 238 return; 239 case R.id.menu_crop: 240 intent.setDataAndType(uri, mime) 241 .setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION) 242 .setAction(FilterShowActivity.CROP_ACTION) 243 .setClass(mContext, FilterShowActivity.class); 244 mContext.startActivity(intent); 245 return; 246 case R.id.menu_trim: 247 intent.setData(uri) 248 .setClass(mContext, TrimVideo.class); 249 mContext.startActivity(intent); 250 return; 251 case R.id.menu_mute: 252 /* TODO need a way to get the file path of an item 253 MuteVideo muteVideo = new MuteVideo(filePath, 254 uri, (Activity) mContext); 255 muteVideo.muteInBackground(); 256 */ 257 return; 258 case R.id.menu_set_as: 259 intent.setDataAndType(uri, mime) 260 .setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION) 261 .setAction(Intent.ACTION_ATTACH_DATA) 262 .putExtra("mimeType", mime); 263 mContext.startActivity(Intent.createChooser( 264 intent, mContext.getString(R.string.set_as))); 265 return; 266 default: 267 return; 268 } 269 } 270 271 private List<Object> getPathsForSelectedItems() { 272 List<Object> paths = new ArrayList<Object>(); 273 SparseBooleanArray selected = mDelegate.getSelectedItemPositions(); 274 for (int i = 0; i < selected.size(); i++) { 275 if (selected.valueAt(i)) { 276 paths.add(mDelegate.getPathForItemAtPosition(i)); 277 } 278 } 279 return paths; 280 } 281 282 public Object getSelectedItem() { 283 if (mDelegate.getSelectedItemCount() != 1) { 284 return null; 285 } 286 SparseBooleanArray selected = mDelegate.getSelectedItemPositions(); 287 for (int i = 0; i < selected.size(); i++) { 288 if (selected.valueAt(i)) { 289 return mDelegate.getItemAtPosition(selected.keyAt(i)); 290 } 291 } 292 return null; 293 } 294 } 295
