app/src/main/java/com/stoutner/privacybrowser/activities/Bookmarks.java

   1 /**
   2  * Copyright 2016 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
   5  *
   6  * Privacy Browser is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.activities;
  21
  22 import android.app.Activity;
  23 import android.content.Context;
  24 import android.content.Intent;
  25 import android.database.Cursor;
  26 import android.graphics.Bitmap;
  27 import android.graphics.BitmapFactory;
  28 import android.graphics.Typeface;
  29 import android.graphics.drawable.BitmapDrawable;
  30 import android.graphics.drawable.Drawable;
  31 import android.os.Bundle;
  32 import android.support.design.widget.FloatingActionButton;
  33 import android.support.design.widget.Snackbar;
  34 import android.support.v4.app.NavUtils;
  35 import android.support.v7.app.ActionBar;
  36 import android.support.v7.app.AppCompatActivity;
  37 import android.support.v7.app.AppCompatDialogFragment;
  38 import android.support.v7.widget.Toolbar;
  39 import android.util.SparseBooleanArray;
  40 import android.view.ActionMode;
  41 import android.view.Menu;
  42 import android.view.MenuItem;
  43 import android.view.View;
  44 import android.view.ViewGroup;
  45 import android.widget.AbsListView;
  46 import android.widget.AdapterView;
  47 import android.widget.CursorAdapter;
  48 import android.widget.EditText;
  49 import android.widget.ImageView;
  50 import android.widget.ListView;
  51 import android.widget.RadioButton;
  52 import android.widget.TextView;
  53
  54 import com.stoutner.privacybrowser.dialogs.EditBookmark;
  55 import com.stoutner.privacybrowser.dialogs.EditBookmarkFolder;
  56 import com.stoutner.privacybrowser.dialogs.MoveToFolder;
  57 import com.stoutner.privacybrowser.R;
  58 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
  59 import com.stoutner.privacybrowser.dialogs.CreateBookmark;
  60 import com.stoutner.privacybrowser.dialogs.CreateBookmarkFolder;
  61
  62 import java.io.ByteArrayOutputStream;
  63
  64 public class Bookmarks extends AppCompatActivity implements CreateBookmark.CreateBookmarkListener,
  65         CreateBookmarkFolder.CreateBookmarkFolderListener, EditBookmark.EditBookmarkListener,
  66         EditBookmarkFolder.EditBookmarkFolderListener, MoveToFolder.MoveToFolderListener {
  67
  68     // `bookmarksDatabaseHelper` is public static so it can be accessed from `EditBookmark` and `MoveToFolder`.  It is also used in `onCreate()`,
  69     // `onCreateBookmarkCreate()`, `updateBookmarksListView()`, and `updateBookmarksListViewExcept()`.
  70     public static BookmarksDatabaseHelper bookmarksDatabaseHelper;
  71
  72     // `currentFolder` is public static so it can be accessed from `MoveToFolder`.
  73     // It is used in `onCreate`, `onOptionsItemSelected()`, `onCreateBookmarkCreate`, `onCreateBookmarkFolderCreate`, and `onEditBookmarkSave`.
  74     public static String currentFolder;
  75
  76     // `checkedItemIds` is public static so it can be accessed from `EditBookmark`, `EditBookmarkFolder`, and `MoveToFolder`.
  77     // It is also used in `onActionItemClicked`.
  78     public static long[] checkedItemIds;
  79
  80
  81     // `bookmarksListView` is used in `onCreate()`, `updateBookmarksListView()`, and `updateBookmarksListViewExcept()`.
  82     private ListView bookmarksListView;
  83
  84     // `contextualActionMode` is used in `onCreate()` and `onEditBookmarkSave()`.
  85     private ActionMode contextualActionMode;
  86
  87     // `selectedBookmarkPosition` is used in `onCreate()` and `onEditBookmarkSave()`.
  88     private int selectedBookmarkPosition;
  89
  90     // `appBar` is used in `onCreate()` and `updateBookmarksListView()`.
  91     private ActionBar appBar;
  92
  93     // `bookmarksCursor` is used in `onCreate()`, `updateBookmarksListView()`, and `updateBookmarksListViewExcept()`.
  94     private Cursor bookmarksCursor;
  95
  96     // `oldFolderName` is used in `onCreate()` and `onEditBookmarkFolderSave()`.
  97     private String oldFolderNameString;
  98
  99     @Override
 100     protected void onCreate(Bundle savedInstanceState) {
 101         super.onCreate(savedInstanceState);
 102         setContentView(R.layout.bookmarks_coordinatorlayout);
 103
 104         // We need to use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21.
 105         final Toolbar bookmarksAppBar = (Toolbar) findViewById(R.id.bookmarks_toolbar);
 106         setSupportActionBar(bookmarksAppBar);
 107
 108         // Display the home arrow on `SupportActionBar`.
 109         appBar = getSupportActionBar();
 110         assert appBar != null;// This assert removes the incorrect warning in Android Studio on the following line that appBar might be null.
 111         appBar.setDisplayHomeAsUpEnabled(true);
 112
 113
 114         // Initialize the database handler and the ListView.
 115         // `this` specifies the context.  The two `null`s do not specify the database name or a `CursorFactory`.
 116         // The `0` is to specify a database version, but that is set instead using a constant in `BookmarksDatabaseHelper`.
 117         bookmarksDatabaseHelper = new BookmarksDatabaseHelper(this, null, null, 0);
 118         bookmarksListView = (ListView) findViewById(R.id.bookmarks_listview);
 119
 120         // Set currentFolder to the home folder, which is null in the database.
 121         currentFolder = "";
 122
 123         // Display the bookmarks in the ListView.
 124         updateBookmarksListView(currentFolder);
 125
 126         // Set a listener so that tapping a list item loads the URL.  We need to store the activity
 127         // in a variable so that we can return to the parent activity after loading the URL.
 128         final Activity bookmarksActivity = this;
 129         bookmarksListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
 130             @Override
 131             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 132                 // Convert the id from long to int to match the format of the bookmarks database.
 133                 int databaseID = (int) id;
 134
 135                 // Get the bookmark `Cursor` and move it to the first row.
 136                 Cursor bookmarkCursor = bookmarksDatabaseHelper.getBookmarkCursor(databaseID);
 137                 bookmarkCursor.moveToFirst();
 138
 139                 // If the bookmark is a folder load its contents into the ListView.
 140                 if (bookmarkCursor.getInt(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
 141                     // Update `currentFolder`.
 142                     currentFolder = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 143
 144                     // Reload the ListView with `currentFolder`.
 145                     updateBookmarksListView(currentFolder);
 146                 } else {  // Load the URL into `mainWebView`.
 147                     // Get the bookmark URL and assign it to formattedUrlString.  `mainWebView` will automatically reload when `Bookmarks` closes.
 148                     MainWebView.formattedUrlString = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL));
 149
 150                     NavUtils.navigateUpFromSameTask(bookmarksActivity);
 151                 }
 152
 153                 // Close the `Cursor`.
 154                 bookmarkCursor.close();
 155             }
 156         });
 157
 158         // `MultiChoiceModeListener` handles long clicks.
 159         bookmarksListView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
 160             // `moveBookmarkUpMenuItem` is used in `onCreateActionMode()` and `onItemCheckedStateChanged`.
 161             MenuItem moveBookmarkUpMenuItem;
 162
 163             // `moveBookmarkDownMenuItem` is used in `onCreateActionMode()` and `onItemCheckedStateChanged`.
 164             MenuItem moveBookmarkDownMenuItem;
 165
 166             // `editBookmarkMenuItem` is used in `onCreateActionMode()` and `onItemCheckedStateChanged`.
 167             MenuItem editBookmarkMenuItem;
 168
 169             // `selectAllBookmarks` is used in `onCreateActionMode()` and `onItemCheckedStateChanges`.
 170             MenuItem selectAllBookmarksMenuItem;
 171
 172             @Override
 173             public boolean onCreateActionMode(ActionMode mode, Menu menu) {
 174                 // Inflate the menu for the contextual app bar and set the title.
 175                 getMenuInflater().inflate(R.menu.bookmarks_context_menu, menu);
 176
 177                 // Set the title.
 178                 if (currentFolder.isEmpty()) {
 179                     // Use `R.string.bookmarks` if we are in the home folder.
 180                     mode.setTitle(R.string.bookmarks);
 181                 } else {  // Use the current folder name as the title.
 182                     mode.setTitle(currentFolder);
 183                 }
 184
 185                 // Get a handle for MenuItems we need to selectively disable.
 186                 moveBookmarkUpMenuItem = menu.findItem(R.id.move_bookmark_up);
 187                 moveBookmarkDownMenuItem = menu.findItem(R.id.move_bookmark_down);
 188                 editBookmarkMenuItem = menu.findItem(R.id.edit_bookmark);
 189                 selectAllBookmarksMenuItem = menu.findItem(R.id.context_menu_select_all_bookmarks);
 190
 191                 // Get a handle for `contextualActionMode` so we can close it programatically.
 192                 contextualActionMode = mode;
 193
 194                 return true;
 195             }
 196
 197             @Override
 198             public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
 199                 return false;
 200             }
 201
 202             @Override
 203             public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
 204                 // Get an array of the selected bookmarks.
 205                 long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 206
 207                 // Calculate the number of selected bookmarks.
 208                 int numberOfSelectedBookmarks = selectedBookmarksLongArray.length;
 209
 210                 // Sometimes Android forgets to close the contextual app bar when all the items are deselected.
 211                 if (numberOfSelectedBookmarks == 0) {
 212                     mode.finish();
 213                 }
 214
 215                 // List the number of selected bookmarks in the subtitle.
 216                 mode.setSubtitle(numberOfSelectedBookmarks + " " + getString(R.string.selected));
 217
 218                 if (numberOfSelectedBookmarks == 1) {
 219                     // Show the `Move Up`, `Move Down`, and  `Edit` option only if 1 bookmark is selected.
 220                     moveBookmarkUpMenuItem.setVisible(true);
 221                     moveBookmarkDownMenuItem.setVisible(true);
 222                     editBookmarkMenuItem.setVisible(true);
 223
 224                     // Get the database IDs for the bookmarks.
 225                     int selectedBookmarkDatabaseId = (int) selectedBookmarksLongArray[0];
 226                     int firstBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(0);
 227                     // bookmarksListView is 0 indexed.
 228                     int lastBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(bookmarksListView.getCount() - 1);
 229
 230                     // Disable `moveBookmarkUpMenuItem` if the selected bookmark is at the top of the ListView.
 231                     if (selectedBookmarkDatabaseId == firstBookmarkDatabaseId) {
 232                         moveBookmarkUpMenuItem.setEnabled(false);
 233                         moveBookmarkUpMenuItem.setIcon(R.drawable.move_bookmark_up_disabled);
 234                     } else {  // Otherwise enable `moveBookmarkUpMenuItem`.
 235                         moveBookmarkUpMenuItem.setEnabled(true);
 236                         moveBookmarkUpMenuItem.setIcon(R.drawable.move_bookmark_up_enabled);
 237                     }
 238
 239                     // Disable `moveBookmarkDownMenuItem` if the selected bookmark is at the bottom of the ListView.
 240                     if (selectedBookmarkDatabaseId == lastBookmarkDatabaseId) {
 241                         moveBookmarkDownMenuItem.setEnabled(false);
 242                         moveBookmarkDownMenuItem.setIcon(R.drawable.move_bookmark_down_disabled);
 243                     } else {  // Otherwise enable `moveBookmarkDownMenuItem`.
 244                         moveBookmarkDownMenuItem.setEnabled(true);
 245                         moveBookmarkDownMenuItem.setIcon(R.drawable.move_bookmark_down_enabled);
 246                     }
 247                 } else {  // Hide the MenuItems because more than one bookmark is selected.
 248                     moveBookmarkUpMenuItem.setVisible(false);
 249                     moveBookmarkDownMenuItem.setVisible(false);
 250                     editBookmarkMenuItem.setVisible(false);
 251                 }
 252
 253                 // Do not show `Select All` if all the bookmarks are already checked.
 254                 if (bookmarksListView.getCheckedItemIds().length == bookmarksListView.getCount()) {
 255                     selectAllBookmarksMenuItem.setVisible(false);
 256                 } else {
 257                     selectAllBookmarksMenuItem.setVisible(true);
 258                 }
 259             }
 260
 261             @Override
 262             public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
 263                 int menuItemId = item.getItemId();
 264
 265                 // `numberOfBookmarks` is used in `R.id.move_bookmark_up_enabled`, `R.id.move_bookmark_down_enabled`, and `R.id.context_menu_select_all_bookmarks`.
 266                 int numberOfBookmarks;
 267
 268                 // `selectedBookmarkLongArray` is used in `R.id.move_bookmark_up`, `R.id.move_bookmark_down`, and `R.id.edit_bookmark`.
 269                 long[]selectedBookmarkLongArray;
 270                 // `selectedBookmarkDatabaseId` is used in `R.id.move_bookmark_up`, `R.id.move_bookmark_down`, and `R.id.edit_bookmark`.
 271                 int selectedBookmarkDatabaseId;
 272                 // `selectedBookmarkNewPosition` is used in `R.id.move_bookmark_up` and `R.id.move_bookmark_down`.
 273                 int selectedBookmarkNewPosition;
 274                 // `bookmarkPositionSparseBooleanArray` is used in `R.id.edit_bookmark` and `R.id.delete_bookmark`.
 275                 SparseBooleanArray bookmarkPositionSparseBooleanArray;
 276
 277                 switch (menuItemId) {
 278                     case R.id.move_bookmark_up:
 279                         // Get the selected bookmark database ID.
 280                         selectedBookmarkLongArray = bookmarksListView.getCheckedItemIds();
 281                         selectedBookmarkDatabaseId = (int) selectedBookmarkLongArray[0];
 282
 283                         // Initialize `selectedBookmarkNewPosition`.
 284                         selectedBookmarkNewPosition = 0;
 285
 286                         for (int i = 0; i < bookmarksListView.getCount(); i++) {
 287                             int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 288                             int nextBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i + 1);
 289
 290                             if (databaseId == selectedBookmarkDatabaseId || nextBookmarkDatabaseId == selectedBookmarkDatabaseId) {
 291                                 if (databaseId == selectedBookmarkDatabaseId) {
 292                                     // Move the selected bookmark up one and store the new bookmark position.
 293                                     bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i - 1);
 294                                     selectedBookmarkNewPosition = i - 1;
 295                                 } else {  // Move the bookmark above the selected bookmark down one.
 296                                     bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i + 1);
 297                                 }
 298                             } else {
 299                                 // Reset the rest of the bookmarks' DISPLAY_ORDER to match the position in the ListView.
 300                                 // This isn't necessary, but it clears out any stray values that might have crept into the database.
 301                                 bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i);
 302                             }
 303                         }
 304
 305                         // Refresh the ListView.
 306                         updateBookmarksListView(currentFolder);
 307
 308                         // Select the previously selected bookmark in the new location.
 309                         bookmarksListView.setItemChecked(selectedBookmarkNewPosition, true);
 310
 311                         bookmarksListView.setSelection(selectedBookmarkNewPosition - 5);
 312
 313                         break;
 314
 315                     case R.id.move_bookmark_down:
 316                         // Get the selected bookmark database ID.
 317                         selectedBookmarkLongArray = bookmarksListView.getCheckedItemIds();
 318                         selectedBookmarkDatabaseId = (int) selectedBookmarkLongArray[0];
 319
 320                         // Initialize `selectedBookmarkNewPosition`.
 321                         selectedBookmarkNewPosition = 0;
 322
 323                         for (int i = 0; i <bookmarksListView.getCount(); i++) {
 324                             int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 325                             int previousBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i - 1);
 326
 327                             if (databaseId == selectedBookmarkDatabaseId || previousBookmarkDatabaseId == selectedBookmarkDatabaseId) {
 328                                 if (databaseId == selectedBookmarkDatabaseId) {
 329                                     // Move the selected bookmark down one and store the new bookmark position.
 330                                     bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i + 1);
 331                                     selectedBookmarkNewPosition = i + 1;
 332                                 } else {  // Move the bookmark below the selected bookmark up one.
 333                                     bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i - 1);
 334                                 }
 335                             } else {
 336                                 // Reset the rest of the bookmark' DISPLAY_ORDER to match the position in the ListView.
 337                                 // This isn't necessary, but it clears out any stray values that might have crept into the database.
 338                                 bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i);
 339                             }
 340                         }
 341
 342                         // Refresh the ListView.
 343                         updateBookmarksListView(currentFolder);
 344
 345                         // Select the previously selected bookmark in the new location.
 346                         bookmarksListView.setItemChecked(selectedBookmarkNewPosition, true);
 347
 348                         bookmarksListView.setSelection(selectedBookmarkNewPosition - 5);
 349                         break;
 350
 351                     case R.id.move_to_folder:
 352                         // Store `checkedItemIds` for use by the `AlertDialog`.
 353                         checkedItemIds = bookmarksListView.getCheckedItemIds();
 354
 355                         // Show the `MoveToFolder` `AlertDialog` and name the instance `@string/move_to_folder
 356                         AppCompatDialogFragment moveToFolderDialog = new MoveToFolder();
 357                         moveToFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.move_to_folder));
 358                         break;
 359
 360                     case R.id.edit_bookmark:
 361                         // Get a handle for `selectedBookmarkPosition` so we can scroll to it after refreshing the ListView.
 362                         bookmarkPositionSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
 363                         for (int i = 0; i < bookmarkPositionSparseBooleanArray.size(); i++) {
 364                             // Find the bookmark that is selected and save the position to `selectedBookmarkPosition`.
 365                             if (bookmarkPositionSparseBooleanArray.valueAt(i))
 366                                 selectedBookmarkPosition = bookmarkPositionSparseBooleanArray.keyAt(i);
 367                         }
 368
 369                         // Move to the selected database ID and find out if it is a folder.
 370                         bookmarksCursor.moveToPosition(selectedBookmarkPosition);
 371                         boolean isFolder = (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1);
 372
 373                         // Store `checkedItemIds` for use by the `AlertDialog`.
 374                         checkedItemIds = bookmarksListView.getCheckedItemIds();
 375
 376                         if (isFolder) {
 377                             // Save the current folder name.
 378                             oldFolderNameString = bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 379
 380                             // Show the `EditBookmarkFolder` `AlertDialog` and name the instance `@string/edit_folder`.
 381                             AppCompatDialogFragment editFolderDialog = new EditBookmarkFolder();
 382                             editFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_folder));
 383                         } else {
 384                             // Show the `EditBookmark` `AlertDialog` and name the instance `@string/edit_bookmark`.
 385                             AppCompatDialogFragment editBookmarkDialog = new EditBookmark();
 386                             editBookmarkDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_bookmark));
 387                         }
 388                         break;
 389
 390                     case R.id.delete_bookmark:
 391                         // Get an array of the selected rows.
 392                         final long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 393
 394                         // Get a handle for `selectedBookmarkPosition` so we can scroll to it after refreshing the ListView.
 395                         bookmarkPositionSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
 396                         for (int i = 0; i < bookmarkPositionSparseBooleanArray.size(); i++) {
 397                             // Find the bookmark that is selected and save the position to `selectedBookmarkPosition`.
 398                             if (bookmarkPositionSparseBooleanArray.valueAt(i))
 399                                 selectedBookmarkPosition = bookmarkPositionSparseBooleanArray.keyAt(i);
 400                         }
 401
 402                         updateBookmarksListViewExcept(selectedBookmarksLongArray, currentFolder);
 403
 404                         // Scroll to where the deleted bookmark was located.
 405                         bookmarksListView.setSelection(selectedBookmarkPosition - 5);
 406
 407                         String snackbarMessage;
 408
 409                         // Determine how many items are in the array and prepare an appropriate Snackbar message.
 410                         if (selectedBookmarksLongArray.length == 1) {
 411                             snackbarMessage = getString(R.string.one_bookmark_deleted);
 412                         } else {
 413                             snackbarMessage = selectedBookmarksLongArray.length + " " + getString(R.string.bookmarks_deleted);
 414                         }
 415
 416                         // Show a SnackBar.
 417                         Snackbar.make(findViewById(R.id.bookmarks_coordinatorlayout), snackbarMessage, Snackbar.LENGTH_LONG)
 418                                 .setAction(R.string.undo, new View.OnClickListener() {
 419                                     @Override
 420                                     public void onClick(View view) {
 421                                         // Do nothing because everything will be handled by `onDismissed()` below.
 422                                     }
 423                                 })
 424                                 .setCallback(new Snackbar.Callback() {
 425                                     @Override
 426                                     public void onDismissed(Snackbar snackbar, int event) {
 427                                         // Android Studio wants to see entries for every possible `Snackbar.Callback` even if they aren't used.
 428                                         switch (event) {
 429                                             // The user pushed the "Undo" button.
 430                                             case Snackbar.Callback.DISMISS_EVENT_ACTION:
 431                                                 // Refresh the ListView to show the rows again.
 432                                                 updateBookmarksListView(currentFolder);
 433
 434                                                 // Scroll to where the deleted bookmark was located.
 435                                                 bookmarksListView.setSelection(selectedBookmarkPosition - 5);
 436
 437                                                 break;
 438
 439                                             case Snackbar.Callback.DISMISS_EVENT_CONSECUTIVE:
 440                                                 // Do nothing and let the default behavior run.
 441
 442                                             case Snackbar.Callback.DISMISS_EVENT_MANUAL:
 443                                                 // Do nothing and let the default behavior run.
 444
 445                                             case Snackbar.Callback.DISMISS_EVENT_SWIPE:
 446                                                 // Do nothing and let the default behavior run.
 447
 448                                             case Snackbar.Callback.DISMISS_EVENT_TIMEOUT:
 449                                                 // Do nothing and let the default behavior run.
 450
 451                                             // The Snackbar was dismissed without the "Undo" button being pushed.
 452                                             default:
 453                                                 // Delete each selected row.
 454                                                 for (long databaseIdLong : selectedBookmarksLongArray) {
 455                                                     // Convert `databaseIdLong` to an int.
 456                                                     int databaseIdInt = (int) databaseIdLong;
 457
 458                                                     if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
 459                                                         deleteBookmarkFolderContents(databaseIdInt);
 460                                                     }
 461
 462                                                     // Delete `databaseIdInt`.
 463                                                     bookmarksDatabaseHelper.deleteBookmark(databaseIdInt);
 464                                                 }
 465                                                 break;
 466                                         }
 467                                     }
 468                                 })
 469                                 .show();
 470
 471                         // Close the contextual app bar.
 472                         mode.finish();
 473                         break;
 474
 475                     case R.id.context_menu_select_all_bookmarks:
 476                         numberOfBookmarks = bookmarksListView.getCount();
 477
 478                         for (int i = 0; i < numberOfBookmarks; i++) {
 479                             bookmarksListView.setItemChecked(i, true);
 480                         }
 481                         break;
 482                 }
 483                 // Consume the click.
 484                 return true;
 485             }
 486
 487             @Override
 488             public void onDestroyActionMode(ActionMode mode) {
 489
 490             }
 491         });
 492
 493         // Set a FloatingActionButton for creating new bookmarks.
 494         FloatingActionButton createBookmarkFAB = (FloatingActionButton) findViewById(R.id.create_bookmark_fab);
 495         createBookmarkFAB.setOnClickListener(new View.OnClickListener() {
 496             @Override
 497             public void onClick(View view) {
 498                 // Show the `CreateBookmark` `AlertDialog` and name the instance `@string/create_bookmark`.
 499                 AppCompatDialogFragment createBookmarkDialog = new CreateBookmark();
 500                 createBookmarkDialog.show(getSupportFragmentManager(), getResources().getString(R.string.create_bookmark));
 501             }
 502         });
 503     }
 504
 505     @Override
 506     public boolean onCreateOptionsMenu(Menu menu) {
 507         //Inflate the menu.
 508         getMenuInflater().inflate(R.menu.bookmarks_options_menu, menu);
 509
 510         return true;
 511     }
 512
 513     @Override
 514     public boolean onPrepareOptionsMenu(Menu menu) {
 515         super.onPrepareOptionsMenu(menu);
 516
 517         return true;
 518     }
 519
 520     @Override
 521     public boolean onOptionsItemSelected(MenuItem menuItem) {
 522         int menuItemId = menuItem.getItemId();
 523
 524         switch (menuItemId) {
 525             case android.R.id.home:
 526                 // Exit Bookmarks if currently at the home folder.
 527                 if (currentFolder.isEmpty()) {
 528                     NavUtils.navigateUpFromSameTask(this);
 529                 } else {  // Navigate up one folder.
 530                     // Place the former parent folder in `currentFolder`.
 531                     currentFolder = bookmarksDatabaseHelper.getParentFolder(currentFolder);
 532
 533                     updateBookmarksListView(currentFolder);
 534                 }
 535                 break;
 536
 537             case R.id.create_folder:
 538                 // Show the `CreateBookmarkFolder` `AlertDialog` and name the instance `@string/create_folder`.
 539                 AppCompatDialogFragment createBookmarkFolderDialog = new CreateBookmarkFolder();
 540                 createBookmarkFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.create_folder));
 541                 break;
 542
 543             case R.id.options_menu_select_all_bookmarks:
 544                 int numberOfBookmarks = bookmarksListView.getCount();
 545
 546                 for (int i = 0; i < numberOfBookmarks; i++) {
 547                     bookmarksListView.setItemChecked(i, true);
 548                 }
 549                 break;
 550
 551             case R.id.bookmarks_database_view:
 552                 // Launch `BookmarksDatabaseView`.
 553                 Intent bookmarksDatabaseViewIntent = new Intent(this, BookmarksDatabaseView.class);
 554                 startActivity(bookmarksDatabaseViewIntent);
 555                 break;
 556         }
 557         return true;
 558     }
 559
 560     @Override
 561     public void onCreateBookmark(AppCompatDialogFragment dialogFragment) {
 562         // Get the `EditText`s from the `createBookmarkDialogFragment` and extract the strings.
 563         EditText createBookmarkNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_bookmark_name_edittext);
 564         String bookmarkNameString = createBookmarkNameEditText.getText().toString();
 565         EditText createBookmarkUrlEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_bookmark_url_edittext);
 566         String bookmarkUrlString = createBookmarkUrlEditText.getText().toString();
 567
 568         // Convert the favoriteIcon Bitmap to a byte array.
 569         ByteArrayOutputStream favoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
 570         // `0` is for lossless compression (the only option for a PNG).
 571         MainWebView.favoriteIcon.compress(Bitmap.CompressFormat.PNG, 0, favoriteIconByteArrayOutputStream);
 572         byte[] favoriteIconByteArray = favoriteIconByteArrayOutputStream.toByteArray();
 573
 574         // Display the new bookmark below the current items in the (0 indexed) list.
 575         int newBookmarkDisplayOrder = bookmarksListView.getCount();
 576
 577         // Create the bookmark.
 578         bookmarksDatabaseHelper.createBookmark(bookmarkNameString, bookmarkUrlString, newBookmarkDisplayOrder, currentFolder, favoriteIconByteArray);
 579
 580         // Refresh the ListView.  `setSelection` scrolls to the bottom of the list.
 581         updateBookmarksListView(currentFolder);
 582         bookmarksListView.setSelection(newBookmarkDisplayOrder);
 583     }
 584
 585     @Override
 586     public void onCreateBookmarkFolder(AppCompatDialogFragment dialogFragment) {
 587         // Get `create_folder_name_edit_text` and extract the string.
 588         EditText createFolderNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_folder_name_edittext);
 589         String folderNameString = createFolderNameEditText.getText().toString();
 590
 591         // Check to see if the folder already exists.
 592         Cursor bookmarkFolderCursor = bookmarksDatabaseHelper.getFolderCursor(folderNameString);
 593         int existingFoldersWithNewName = bookmarkFolderCursor.getCount();
 594         bookmarkFolderCursor.close();
 595         if (folderNameString.isEmpty() || (existingFoldersWithNewName > 0)) {
 596             String cannotCreateFolder = getResources().getString(R.string.cannot_create_folder) + " \"" + folderNameString + "\"";
 597             Snackbar.make(findViewById(R.id.bookmarks_coordinatorlayout), cannotCreateFolder, Snackbar.LENGTH_INDEFINITE).show();
 598         } else {  // Create the folder.
 599             // Get the new folder icon `Bitmap`.
 600             RadioButton defaultFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon_radiobutton);
 601             Bitmap folderIconBitmap;
 602             if (defaultFolderIconRadioButton.isChecked()) {
 603                 // Get the default folder icon `ImageView` from the `Dialog` and convert it to a `Bitmap`.
 604                 ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon);
 605                 Drawable folderIconDrawable = folderIconImageView.getDrawable();
 606                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
 607                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
 608             } else {  // Assign `favoriteIcon` from the `WebView`.
 609                 folderIconBitmap = MainWebView.favoriteIcon;
 610             }
 611
 612             // Convert `folderIconBitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
 613             ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
 614             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
 615             byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
 616
 617             // Move all the bookmarks down one in the display order.
 618             for (int i = 0; i < bookmarksListView.getCount(); i++) {
 619                 int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 620                 bookmarksDatabaseHelper.updateBookmarkDisplayOrder(databaseId, i + 1);
 621             }
 622
 623             // Create the folder, placing it at the top of the ListView
 624             bookmarksDatabaseHelper.createFolder(folderNameString, 0, currentFolder, folderIconByteArray);
 625
 626             // Refresh the ListView.
 627             updateBookmarksListView(currentFolder);
 628         }
 629     }
 630
 631     @Override
 632     public void onSaveEditBookmark(AppCompatDialogFragment dialogFragment) {
 633         // Get a long array with the the databaseId of the selected bookmark and convert it to an `int`.
 634         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 635         int selectedBookmarkDatabaseId = (int) selectedBookmarksLongArray[0];
 636
 637         // Get the `EditText`s from the `editBookmarkDialogFragment` and extract the strings.
 638         EditText editBookmarkNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_name_edittext);
 639         String bookmarkNameString = editBookmarkNameEditText.getText().toString();
 640         EditText editBookmarkUrlEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_url_edittext);
 641         String bookmarkUrlString = editBookmarkUrlEditText.getText().toString();
 642
 643         // Get `edit_bookmark_current_icon_radiobutton`.
 644         RadioButton currentBookmarkIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_current_icon_radiobutton);
 645
 646         if (currentBookmarkIconRadioButton.isChecked()) {  // Update the bookmark without changing the favorite icon.
 647             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString);
 648         } else {  // Update the bookmark using the `WebView` favorite icon.
 649             ByteArrayOutputStream newFavoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
 650             MainWebView.favoriteIcon.compress(Bitmap.CompressFormat.PNG, 0, newFavoriteIconByteArrayOutputStream);
 651             byte[] newFavoriteIconByteArray = newFavoriteIconByteArrayOutputStream.toByteArray();
 652
 653             //  Update the bookmark and the favorite icon.
 654             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, newFavoriteIconByteArray);
 655         }
 656
 657         // Close the contextual action mode.
 658         contextualActionMode.finish();
 659
 660         // Refresh the `ListView`.  `setSelection` scrolls to the position of the bookmark that was edited.
 661         updateBookmarksListView(currentFolder);
 662         bookmarksListView.setSelection(selectedBookmarkPosition);
 663     }
 664
 665     @Override
 666     public void onSaveEditBookmarkFolder(AppCompatDialogFragment dialogFragment) {
 667         // Get the new folder name.
 668         EditText editFolderNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_folder_name_edittext);
 669         String newFolderNameString = editFolderNameEditText.getText().toString();
 670
 671         // Check to see if the new folder name is unique.
 672         Cursor bookmarkFolderCursor = bookmarksDatabaseHelper.getFolderCursor(newFolderNameString);
 673         int existingFoldersWithNewName = bookmarkFolderCursor.getCount();
 674         bookmarkFolderCursor.close();
 675         if ( ((existingFoldersWithNewName == 0) || newFolderNameString.equals(oldFolderNameString)) && !newFolderNameString.isEmpty()) {
 676             // Get a long array with the the database ID of the selected folder and convert it to an `int`.
 677             long[] selectedFolderLongArray = bookmarksListView.getCheckedItemIds();
 678             int selectedFolderDatabaseId = (int) selectedFolderLongArray[0];
 679
 680             // Get the `RadioButtons` from the `Dialog`.
 681             RadioButton currentFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_folder_current_icon_radiobutton);
 682             RadioButton defaultFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon_radiobutton);
 683
 684             // Check if the favorite icon has changed.
 685             if (currentFolderIconRadioButton.isChecked()) {
 686                 // Update the folder name if it has changed without modifying the favorite icon.
 687                 if (!newFolderNameString.equals(oldFolderNameString)) {
 688                     bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString);
 689
 690                     // Refresh the `ListView`.  `setSelection` scrolls to the position of the folder that was edited.
 691                     updateBookmarksListView(currentFolder);
 692                     bookmarksListView.setSelection(selectedBookmarkPosition);
 693                 }
 694             } else {  // Update the folder icon.
 695                 // Get the new folder icon `Bitmap`.
 696                 Bitmap folderIconBitmap;
 697                 if (defaultFolderIconRadioButton.isChecked()) {
 698                     // Get the default folder icon `ImageView` from the `Drawable` and convert it to a `Bitmap`.
 699                     ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon);
 700                     Drawable folderIconDrawable = folderIconImageView.getDrawable();
 701                     BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
 702                     folderIconBitmap = folderIconBitmapDrawable.getBitmap();
 703                 } else {  // Get the web page icon `ImageView` from the `Dialog`.
 704                     folderIconBitmap = MainWebView.favoriteIcon;
 705                 }
 706
 707                 // Convert the folder `Bitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
 708                 ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
 709                 folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
 710                 byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
 711
 712                 bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString, folderIconByteArray);
 713
 714                 // Refresh the `ListView`.  `setSelection` scrolls to the position of the folder that was edited.
 715                 updateBookmarksListView(currentFolder);
 716                 bookmarksListView.setSelection(selectedBookmarkPosition);
 717             }
 718         } else {  // Don't edit the folder because the new name is not unique.
 719             String cannot_rename_folder = getResources().getString(R.string.cannot_rename_folder) + " \"" + newFolderNameString + "\"";
 720             Snackbar.make(findViewById(R.id.bookmarks_coordinatorlayout), cannot_rename_folder, Snackbar.LENGTH_INDEFINITE).show();
 721         }
 722
 723         // Close the contextual action mode.
 724         contextualActionMode.finish();
 725     }
 726
 727     @Override
 728     public void onMoveToFolder(AppCompatDialogFragment dialogFragment) {
 729         // Get the new folder database id.
 730         ListView folderListView = (ListView) dialogFragment.getDialog().findViewById(R.id.move_to_folder_listview);
 731         long[] newFolderLongArray = folderListView.getCheckedItemIds();
 732
 733         if (newFolderLongArray.length == 0) {  // No new folder was selected.
 734             Snackbar.make(findViewById(R.id.bookmarks_coordinatorlayout), getString(R.string.cannot_move_bookmarks), Snackbar.LENGTH_LONG).show();
 735         } else {  // Move the selected bookmarks.
 736             // Get the new folder database ID.
 737             int newFolderDatabaseId = (int) newFolderLongArray[0];
 738
 739             // Instantiate `newFolderName`.
 740             String newFolderName;
 741
 742             if (newFolderDatabaseId == 0) {
 743                 // The new folder is the home folder, represented as `""` in the database.
 744                 newFolderName = "";
 745             } else {
 746                 // Get the new folder name from the database.
 747                 newFolderName = bookmarksDatabaseHelper.getFolderName(newFolderDatabaseId);
 748             }
 749
 750             // Get a long array with the the database ID of the selected bookmarks.
 751             long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 752             for (long databaseIdLong : selectedBookmarksLongArray) {
 753                 // Get `databaseIdInt` for each selected bookmark.
 754                 int databaseIdInt = (int) databaseIdLong;
 755
 756                 // Move the selected bookmark to the new folder.
 757                 bookmarksDatabaseHelper.moveToFolder(databaseIdInt, newFolderName);
 758             }
 759
 760             // Refresh the `ListView`.
 761             updateBookmarksListView(currentFolder);
 762
 763             // Close the contextual app bar.
 764             contextualActionMode.finish();
 765         }
 766     }
 767
 768     private void updateBookmarksListView(String folderName) {
 769         // Get a `Cursor` with the current contents of the bookmarks database.
 770         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(folderName);
 771
 772         // Setup `bookmarksCursorAdapter` with `this` context.  `false` disables autoRequery.
 773         CursorAdapter bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
 774             @Override
 775             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 776                 // Inflate the individual item layout.  `false` does not attach it to the root.
 777                 return getLayoutInflater().inflate(R.layout.bookmarks_item_linearlayout, parent, false);
 778             }
 779
 780             @Override
 781             public void bindView(View view, Context context, Cursor cursor) {
 782                 // Get the favorite icon byte array from the `Cursor`.
 783                 byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
 784
 785                 // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
 786                 Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length);
 787
 788                 // Display the bitmap in `bookmarkFavoriteIcon`.
 789                 ImageView bookmarkFavoriteIcon = (ImageView) view.findViewById(R.id.bookmark_favorite_icon);
 790                 bookmarkFavoriteIcon.setImageBitmap(favoriteIconBitmap);
 791
 792
 793                 // Get the bookmark name from the cursor and display it in `bookmarkNameTextView`.
 794                 String bookmarkNameString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 795                 TextView bookmarkNameTextView = (TextView) view.findViewById(R.id.bookmark_name);
 796                 bookmarkNameTextView.setText(bookmarkNameString);
 797
 798                 // Make the font bold for folders.
 799                 if (cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
 800                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT_BOLD);
 801                 } else {  // Reset the font to default for normal bookmarks.
 802                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT);
 803                 }
 804             }
 805         };
 806
 807         // Update the ListView.
 808         bookmarksListView.setAdapter(bookmarksCursorAdapter);
 809
 810         // Set the AppBar title.
 811         if (currentFolder.isEmpty()) {
 812             appBar.setTitle(R.string.bookmarks);
 813         } else {
 814             appBar.setTitle(currentFolder);
 815         }
 816     }
 817
 818     private void updateBookmarksListViewExcept(long[] exceptIdLongArray, String folderName) {
 819         // Get a `Cursor` with the current contents of the bookmarks database except for the specified database IDs.
 820         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksCursorExcept(exceptIdLongArray, folderName);
 821
 822         // Setup `bookmarksCursorAdapter` with `this` context.  `false` disables autoRequery.
 823         CursorAdapter bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
 824             @Override
 825             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 826                 // Inflate the individual item layout.  `false` does not attach it to the root.
 827                 return getLayoutInflater().inflate(R.layout.bookmarks_item_linearlayout, parent, false);
 828             }
 829
 830             @Override
 831             public void bindView(View view, Context context, Cursor cursor) {
 832                 // Get the favorite icon byte array from the cursor.
 833                 byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
 834
 835                 // Convert the byte array to a Bitmap beginning at the first byte and ending at the last.
 836                 Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length);
 837
 838                 // Display the bitmap in `bookmarkFavoriteIcon`.
 839                 ImageView bookmarkFavoriteIcon = (ImageView) view.findViewById(R.id.bookmark_favorite_icon);
 840                 bookmarkFavoriteIcon.setImageBitmap(favoriteIconBitmap);
 841
 842
 843                 // Get the bookmark name from the cursor and display it in `bookmarkNameTextView`.
 844                 String bookmarkNameString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 845                 TextView bookmarkNameTextView = (TextView) view.findViewById(R.id.bookmark_name);
 846                 bookmarkNameTextView.setText(bookmarkNameString);
 847
 848                 // Make the font bold for folders.
 849                 if (cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
 850                     // The first argument is `null` because we don't want to change the font.
 851                     bookmarkNameTextView.setTypeface(null, Typeface.BOLD);
 852                 } else {  // Reset the font to default.
 853                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT);
 854                 }
 855             }
 856         };
 857
 858         // Update the ListView.
 859         bookmarksListView.setAdapter(bookmarksCursorAdapter);
 860     }
 861
 862     private void deleteBookmarkFolderContents(int databaseId) {
 863         // Get the name of the folder.
 864         String folderName = bookmarksDatabaseHelper.getFolderName(databaseId);
 865
 866         // Get the contents of the folder.
 867         Cursor folderCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(folderName);
 868
 869         for (int i = 0; i < folderCursor.getCount(); i++) {
 870             // Move `folderCursor` to the current row.
 871             folderCursor.moveToPosition(i);
 872
 873             // Get the database ID of the item.
 874             int itemDatabaseId = folderCursor.getInt(folderCursor.getColumnIndex(BookmarksDatabaseHelper._ID));
 875
 876             // If this is a folder, delete the contents first.
 877             if (bookmarksDatabaseHelper.isFolder(itemDatabaseId)) {
 878                 deleteBookmarkFolderContents(itemDatabaseId);
 879             }
 880
 881             bookmarksDatabaseHelper.deleteBookmark(itemDatabaseId);
 882         }
 883     }
 884 }