Partial bookmarks drawer implemention.
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / activities / BookmarksActivity.java
1 /*
2  * Copyright © 2016-2017 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.CreateBookmarkDialog;
55 import com.stoutner.privacybrowser.dialogs.CreateBookmarkFolderDialog;
56 import com.stoutner.privacybrowser.dialogs.EditBookmarkDialog;
57 import com.stoutner.privacybrowser.dialogs.EditBookmarkFolderDialog;
58 import com.stoutner.privacybrowser.dialogs.MoveToFolderDialog;
59 import com.stoutner.privacybrowser.R;
60 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
61
62 import java.io.ByteArrayOutputStream;
63
64 public class BookmarksActivity extends AppCompatActivity implements CreateBookmarkDialog.CreateBookmarkListener, CreateBookmarkFolderDialog.CreateBookmarkFolderListener, EditBookmarkDialog.EditBookmarkListener,
65         EditBookmarkFolderDialog.EditBookmarkFolderListener, MoveToFolderDialog.MoveToFolderListener {
66
67     // `bookmarksDatabaseHelper` is public static so it can be accessed from `CreateBookmarkFolderDialog`, `EditBookmarkDialog`, `EditBookmarkFolderDialog` and `MoveToFolderDialog`.  It is also used in `onCreate()`, `onOptionsItemSelected()`,
68     // `onBackPressed()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, `onMoveToFolder()`, `deleteBookmarkFolderContents()`, and `loadFolder().
69     public static BookmarksDatabaseHelper bookmarksDatabaseHelper;
70
71     // `currentFolder` is public static so it can be accessed from `MoveToFolderDialog`.
72     // It is used in `onCreate`, `onOptionsItemSelected()`, `onBackPressed()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, `onMoveToFolder()`, and `loadFolder()`.
73     public static String currentFolder;
74
75     // `checkedItemIds` is public static so it can be accessed from `EditBookmarkDialog`, `EditBookmarkFolderDialog`, and `MoveToFolderDialog`.
76     // It is also used in `onCreate()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, `onMoveToFolder()`, and `updateMoveIcons()`.
77     public static long[] checkedItemIds;
78
79
80     // `bookmarksListView` is used in `onCreate()`, `onOptionsItemSelected()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, `onMoveToFolder()`, `updateMoveIcons()`, `scrollBookmarks()`,
81     // and `loadFolder()`.
82     private ListView bookmarksListView;
83
84     // `bookmarksCursor` is used in `onCreate()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, `onMoveToFolder()`, `deleteBookmarkFolderContents()`, and `loadFolder()`.
85     private Cursor bookmarksCursor;
86
87     // `bookmarksCursorAdapter` is used in `onCreate(), `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, `onMoveToFolder()`, and `onLoadFolder()`.
88     private CursorAdapter bookmarksCursorAdapter;
89
90     // `contextualActionMode` is used in `onCreate()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()` and `onMoveToFolder()`.
91     private ActionMode contextualActionMode;
92
93     // `appBar` is used in `onCreate()` and `loadFolder()`.
94     private ActionBar appBar;
95
96     // `oldFolderName` is used in `onCreate()` and `onSaveEditBookmarkFolder()`.
97     private String oldFolderNameString;
98
99     // `moveBookmarkUpMenuItem` is used in `onCreate()` and `updateMoveIcons`.
100     private MenuItem moveBookmarkUpMenuItem;
101
102     // `moveBookmarkDownMenuItem` is used in `onCreate()` and `updateMoveIcons`.
103     private MenuItem moveBookmarkDownMenuItem;
104
105     @Override
106     protected void onCreate(Bundle savedInstanceState) {
107         // Set the activity theme.
108         if (MainWebViewActivity.darkTheme) {
109             setTheme(R.style.PrivacyBrowserDark_SecondaryActivity);
110         } else {
111             setTheme(R.style.PrivacyBrowserLight_SecondaryActivity);
112         }
113
114         // Run the default commands.
115         super.onCreate(savedInstanceState);
116
117         // Set the content view.
118         setContentView(R.layout.bookmarks_coordinatorlayout);
119
120         // Use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21.
121         final Toolbar bookmarksAppBar = (Toolbar) findViewById(R.id.bookmarks_toolbar);
122         setSupportActionBar(bookmarksAppBar);
123
124         // Get a handle for the activity, the app bar, and the `ListView`.
125         final Activity bookmarksActivity = this;
126         appBar = getSupportActionBar();
127         bookmarksListView = (ListView) findViewById(R.id.bookmarks_listview);
128
129         // This assert removes the incorrect warning in Android Studio on the following line that `appBar` might be null.
130         assert appBar != null;
131
132         // Display the home arrow on `SupportActionBar`.
133         appBar.setDisplayHomeAsUpEnabled(true);
134
135         // Initialize the database helper.  `this` specifies the context.  The two `nulls` do not specify the database name or a `CursorFactory`.
136         // The `0` specifies a database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
137         bookmarksDatabaseHelper = new BookmarksDatabaseHelper(this, null, null, 0);
138
139         // Set currentFolder to the home folder, which is `""` in the database.
140         currentFolder = "";
141
142         // Load the home folder.
143         loadFolder();
144
145         // Set a listener so that tapping a list item loads the URL or folder.
146         bookmarksListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
147             @Override
148             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
149                 // Convert the id from long to int to match the format of the bookmarks database.
150                 int databaseID = (int) id;
151
152                 // Get the bookmark `Cursor` for this ID and move it to the first row.
153                 Cursor bookmarkCursor = bookmarksDatabaseHelper.getBookmarkCursor(databaseID);
154                 bookmarkCursor.moveToFirst();
155
156                 // Act upon the bookmark according to the type.
157                 if (bookmarkCursor.getInt(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {  // The selected bookmark is a folder.
158                     // Update `currentFolder`.
159                     currentFolder = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
160
161                     // Load the new folder.
162                     loadFolder();
163                 } else {  // The selected bookmark is not a folder.
164                     // Get the bookmark URL and assign it to `formattedUrlString`.  `mainWebView` will automatically reload when `BookmarksActivity` closes.
165                     MainWebViewActivity.formattedUrlString = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL));
166
167                     // Return to `MainWebViewActivity`.
168                     NavUtils.navigateUpFromSameTask(bookmarksActivity);
169                 }
170
171                 // Close the `Cursor`.
172                 bookmarkCursor.close();
173             }
174         });
175
176         // `MultiChoiceModeListener` handles long clicks.
177         bookmarksListView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
178             // Instantiate the common variables.
179             MenuItem editBookmarkMenuItem;
180             MenuItem selectAllBookmarksMenuItem;
181
182             @Override
183             public boolean onCreateActionMode(ActionMode mode, Menu menu) {
184                 // Inflate the menu for the contextual app bar and set the title.
185                 getMenuInflater().inflate(R.menu.bookmarks_context_menu, menu);
186
187                 // Set the title.
188                 if (currentFolder.isEmpty()) {
189                     // Use `R.string.bookmarks` if we are in the home folder.
190                     mode.setTitle(R.string.bookmarks);
191                 } else {  // Use the current folder name as the title.
192                     mode.setTitle(currentFolder);
193                 }
194
195                 // Get a handle for `MenuItems` that need to be selectively disabled.
196                 moveBookmarkUpMenuItem = menu.findItem(R.id.move_bookmark_up);
197                 moveBookmarkDownMenuItem = menu.findItem(R.id.move_bookmark_down);
198                 editBookmarkMenuItem = menu.findItem(R.id.edit_bookmark);
199                 selectAllBookmarksMenuItem = menu.findItem(R.id.context_menu_select_all_bookmarks);
200
201                 // Store `contextualActionMode` so it can be closed programatically.
202                 contextualActionMode = mode;
203
204                 // Make it so.
205                 return true;
206             }
207
208             @Override
209             public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
210                 // Get a handle for the move to folder menu item.
211                 MenuItem moveToFolderMenuItem = menu.findItem(R.id.move_to_folder);
212
213                 // Get a `Cursor` with all of the folders.
214                 Cursor folderCursor = bookmarksDatabaseHelper.getAllFoldersCursor();
215
216                 // Enable the move to folder menu item if at least one folder exists.
217                 moveToFolderMenuItem.setVisible(folderCursor.getCount() > 0);
218
219                 // Make it so.
220                 return true;
221             }
222
223             @Override
224             public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
225                 // Get a long array of the selected bookmarks.
226                 long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
227
228                 // Calculate the number of selected bookmarks.
229                 int numberOfSelectedBookmarks = selectedBookmarksLongArray.length;
230
231                 // Adjust the `ActionMode` and the `Menu` according to the number of selected bookmarks.
232                 if (numberOfSelectedBookmarks == 0) {  // No bookmarks are selected.
233                     // Close the `ActionMode`.
234                     mode.finish();
235                 } else if (numberOfSelectedBookmarks == 1) {  // One bookmark is selected.
236                     // List the number of selected bookmarks in the subtitle.
237                     mode.setSubtitle(getString(R.string.one_selected));
238
239                     // Show the `Move Up`, `Move Down`, and  `Edit` options.
240                     moveBookmarkUpMenuItem.setVisible(true);
241                     moveBookmarkDownMenuItem.setVisible(true);
242                     editBookmarkMenuItem.setVisible(true);
243
244                     // Update the enabled status of the move icons.
245                     updateMoveIcons();
246                 } else {  // More than one bookmark is selected.
247                     // List the number of selected bookmarks in the subtitle.
248                     mode.setSubtitle(numberOfSelectedBookmarks + " " + getString(R.string.selected));
249
250                     // Hide non-applicable `MenuItems`.
251                     moveBookmarkUpMenuItem.setVisible(false);
252                     moveBookmarkDownMenuItem.setVisible(false);
253                     editBookmarkMenuItem.setVisible(false);
254                 }
255
256                 // Do not show `Select All` if all the bookmarks are already checked.
257                 if (bookmarksListView.getCheckedItemIds().length == bookmarksListView.getCount()) {
258                     selectAllBookmarksMenuItem.setVisible(false);
259                 } else {
260                     selectAllBookmarksMenuItem.setVisible(true);
261                 }
262             }
263
264             @Override
265             public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
266                 // Get the menu item ID.
267                 int menuItemId = item.getItemId();
268
269                 // Instantiate the common variables.
270                 int selectedBookmarkPosition;
271                 int selectedBookmarkNewPosition;
272                 final SparseBooleanArray selectedBookmarksPositionsSparseBooleanArray;
273
274                 switch (menuItemId) {
275                     case R.id.move_bookmark_up:
276                         // Get the array of checked bookmark positions.
277                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
278
279                         // Store the position of the selected bookmark.  Only one bookmark is selected when `move_bookmark_up` is enabled.
280                         selectedBookmarkPosition = selectedBookmarksPositionsSparseBooleanArray.keyAt(0);
281
282                         // Calculate the new position of the selected bookmark.
283                         selectedBookmarkNewPosition = selectedBookmarkPosition - 1;
284
285                         // Iterate through the bookmarks.
286                         for (int i = 0; i < bookmarksListView.getCount(); i++) {
287                             // Get the database ID for the current bookmark.
288                             int currentBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i);
289
290                             // Update the display order for the current bookmark.
291                             if (i == selectedBookmarkPosition) {  // The current bookmark is the selected bookmark.
292                                 // Move the current bookmark up one.
293                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i - 1);
294                             } else if ((i + 1) == selectedBookmarkPosition){  // The current bookmark is immediately above the selected bookmark.
295                                 // Move the current bookmark down one.
296                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i + 1);
297                             } else {  // The current bookmark is not changing positions.
298                                 // Move `bookmarksCursor` to the current bookmark position.
299                                 bookmarksCursor.moveToPosition(i);
300
301                                 // Update the display order only if it is not correct in the database.
302                                 if (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)) != i) {
303                                     bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i);
304                                 }
305                             }
306                         }
307
308                         // Update `bookmarksCursor` with the current contents of the bookmarks database.
309                         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
310
311                         // Update the `ListView`.
312                         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
313
314                         // Scroll with the bookmark.
315                         scrollBookmarks(selectedBookmarkNewPosition);
316
317                         // Update the enabled status of the move icons.
318                         updateMoveIcons();
319                         break;
320
321                     case R.id.move_bookmark_down:
322                         // Get the array of checked bookmark positions.
323                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
324
325                         // Store the position of the selected bookmark.  Only one bookmark is selected when `move_bookmark_down` is enabled.
326                         selectedBookmarkPosition = selectedBookmarksPositionsSparseBooleanArray.keyAt(0);
327
328                         // Calculate the new position of the selected bookmark.
329                         selectedBookmarkNewPosition = selectedBookmarkPosition + 1;
330
331                         // Iterate through the bookmarks.
332                         for (int i = 0; i <bookmarksListView.getCount(); i++) {
333                             // Get the database ID for the current bookmark.
334                             int currentBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i);
335
336                             // Update the display order for the current bookmark.
337                             if (i == selectedBookmarkPosition) {  // The current bookmark is the selected bookmark.
338                                 // Move the current bookmark down one.
339                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i + 1);
340                             } else if ((i - 1) == selectedBookmarkPosition) {  // The current bookmark is immediately below the selected bookmark.
341                                 // Move the bookmark below the selected bookmark up one.
342                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i - 1);
343                             } else {  // The current bookmark is not changing positions.
344                                 // Move `bookmarksCursor` to the current bookmark position.
345                                 bookmarksCursor.moveToPosition(i);
346
347                                 // Update the display order only if it is not correct in the database.
348                                 if (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)) != i) {
349                                     bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i);
350                                 }
351                             }
352                         }
353
354                         // Update `bookmarksCursor` with the current contents of the bookmarks database.
355                         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
356
357                         // Update the `ListView`.
358                         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
359
360                         // Scroll with the bookmark.
361                         scrollBookmarks(selectedBookmarkNewPosition);
362
363                         // Update the enabled status of the move icons.
364                         updateMoveIcons();
365                         break;
366
367                     case R.id.move_to_folder:
368                         // Store `checkedItemIds` for use by the `AlertDialog`.
369                         checkedItemIds = bookmarksListView.getCheckedItemIds();
370
371                         // Show the `MoveToFolderDialog` `AlertDialog` and name the instance `@string/move_to_folder
372                         AppCompatDialogFragment moveToFolderDialog = new MoveToFolderDialog();
373                         moveToFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.move_to_folder));
374                         break;
375
376                     case R.id.edit_bookmark:
377                         // Get the array of checked bookmark positions.
378                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
379
380                         // Get the position of the selected bookmark.  Only one bookmark is selected when `edit_bookmark_down` is enabled.
381                         selectedBookmarkPosition = selectedBookmarksPositionsSparseBooleanArray.keyAt(0);
382
383                         // Move to the selected database ID and find out if it is a folder.
384                         bookmarksCursor.moveToPosition(selectedBookmarkPosition);
385                         boolean isFolder = (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1);
386
387                         // Store `checkedItemIds` for use by the `AlertDialog`.
388                         checkedItemIds = bookmarksListView.getCheckedItemIds();
389
390                         if (isFolder) {
391                             // Save the current folder name, which is used in `onSaveEditBookmarkFolder()`.
392                             oldFolderNameString = bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
393
394                             // Show the `EditBookmarkFolderDialog` `AlertDialog` and name the instance `@string/edit_folder`.
395                             AppCompatDialogFragment editFolderDialog = new EditBookmarkFolderDialog();
396                             editFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_folder));
397                         } else {
398                             // Show the `EditBookmarkDialog` `AlertDialog` and name the instance `@string/edit_bookmark`.
399                             AppCompatDialogFragment editBookmarkDialog = new EditBookmarkDialog();
400                             editBookmarkDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_bookmark));
401                         }
402                         break;
403
404                     case R.id.delete_bookmark:
405                         // Get an array of the selected row IDs.
406                         final long[] selectedBookmarksIdsLongArray = bookmarksListView.getCheckedItemIds();
407
408                         // Get the array of checked bookmarks.  `.clone()` makes a copy that won't change if `bookmarksListView` is reloaded, which is needed for re-selecting the bookmarks on undelete.
409                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions().clone();
410
411                         // Update `bookmarksCursor` with the current contents of the bookmarks database except for the specified database IDs.
412                         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksCursorExcept(selectedBookmarksIdsLongArray, currentFolder);
413
414                         // Update the `ListView`.
415                         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
416
417                         // Instantiate `snackbarMessage`.
418                         String snackbarMessage;
419
420                         // Determine how many items are in the array and prepare an appropriate `Snackbar` message.
421                         if (selectedBookmarksIdsLongArray.length == 1) {
422                             snackbarMessage = getString(R.string.one_bookmark_deleted);
423                         } else {
424                             snackbarMessage = selectedBookmarksIdsLongArray.length + " " + getString(R.string.bookmarks_deleted);
425                         }
426
427                         // Show a SnackBar.
428                         Snackbar.make(findViewById(R.id.bookmarks_coordinatorlayout), snackbarMessage, Snackbar.LENGTH_LONG)
429                                 .setAction(R.string.undo, new View.OnClickListener() {
430                                     @Override
431                                     public void onClick(View view) {
432                                         // Do nothing because everything will be handled by `onDismissed()` below.
433                                     }
434                                 })
435                                 .addCallback(new Snackbar.Callback() {
436                                     @Override
437                                     public void onDismissed(Snackbar snackbar, int event) {
438                                         switch (event) {
439                                             // The user pushed the `Undo` button.
440                                             case Snackbar.Callback.DISMISS_EVENT_ACTION:
441                                                 // Update `bookmarksCursor` with the current contents of the bookmarks database, including the "deleted" bookmarks.
442                                                 bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
443
444                                                 // Update the `ListView`.
445                                                 bookmarksCursorAdapter.changeCursor(bookmarksCursor);
446
447                                                 // Re-select the previously selected bookmarks.
448                                                 for (int i = 0; i < selectedBookmarksPositionsSparseBooleanArray.size(); i++) {
449                                                     bookmarksListView.setItemChecked(selectedBookmarksPositionsSparseBooleanArray.keyAt(i), true);
450                                                 }
451                                                 break;
452
453                                             // The `Snackbar` was dismissed without the `Undo` button being pushed.
454                                             default:
455                                                 // Delete each selected bookmark.
456                                                 for (long databaseIdLong : selectedBookmarksIdsLongArray) {
457                                                     // Convert `databaseIdLong` to an int.
458                                                     int databaseIdInt = (int) databaseIdLong;
459
460                                                     // Delete the contents of the folder if the selected bookmark is a folder.
461                                                     if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
462                                                         deleteBookmarkFolderContents(databaseIdInt);
463                                                     }
464
465                                                     // Delete the selected bookmark.
466                                                     bookmarksDatabaseHelper.deleteBookmark(databaseIdInt);
467                                                 }
468
469                                                 // Update the display order.
470                                                 for (int i = 0; i < bookmarksListView.getCount(); i++) {
471                                                     // Get the database ID for the current bookmark.
472                                                     int currentBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i);
473
474                                                     // Move `bookmarksCursor` to the current bookmark position.
475                                                     bookmarksCursor.moveToPosition(i);
476
477                                                     // Update the display order only if it is not correct in the database.
478                                                     if (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)) != i) {
479                                                         bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i);
480                                                     }
481                                                 }
482                                                 break;
483                                         }
484                                     }
485                                 })
486                                 //Show the `SnackBar`.
487                                 .show();
488
489                         // Close the `ActionBar`.
490                         mode.finish();
491                         break;
492
493                     case R.id.context_menu_select_all_bookmarks:
494                         // Get the total number of bookmarks.
495                         int numberOfBookmarks = bookmarksListView.getCount();
496
497                         // Select them all.
498                         for (int i = 0; i < numberOfBookmarks; i++) {
499                             bookmarksListView.setItemChecked(i, true);
500                         }
501                         break;
502                 }
503
504                 // Consume the click.
505                 return true;
506             }
507
508             @Override
509             public void onDestroyActionMode(ActionMode mode) {
510                 // Do nothing.
511             }
512         });
513
514         // Get handles for the `FloatingActionButtons`.
515         FloatingActionButton createBookmarkFolderFab = (FloatingActionButton) findViewById(R.id.create_bookmark_folder_fab);
516         FloatingActionButton createBookmarkFab = (FloatingActionButton) findViewById(R.id.create_bookmark_fab);
517
518         // Set the create new bookmark folder FAB to display the `AlertDialog`.
519         createBookmarkFolderFab.setOnClickListener(new View.OnClickListener() {
520             @Override
521             public void onClick(View v) {
522                 // Show the `CreateBookmarkFolderDialog` `AlertDialog` and name the instance `@string/create_folder`.
523                 AppCompatDialogFragment createBookmarkFolderDialog = new CreateBookmarkFolderDialog();
524                 createBookmarkFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.create_folder));
525             }
526         });
527
528         // Set the create new bookmark FAB to display the `AlertDialog`.
529         createBookmarkFab.setOnClickListener(new View.OnClickListener() {
530             @Override
531             public void onClick(View view) {
532                 // Show the `CreateBookmarkDialog` `AlertDialog` and name the instance `@string/create_bookmark`.
533                 AppCompatDialogFragment createBookmarkDialog = new CreateBookmarkDialog();
534                 createBookmarkDialog.show(getSupportFragmentManager(), getResources().getString(R.string.create_bookmark));
535             }
536         });
537     }
538
539     @Override
540     public boolean onCreateOptionsMenu(Menu menu) {
541         // Inflate the menu.
542         getMenuInflater().inflate(R.menu.bookmarks_options_menu, menu);
543
544         // Success.
545         return true;
546     }
547
548     @Override
549     public boolean onOptionsItemSelected(MenuItem menuItem) {
550         // Get the ID of the `MenuItem` that was selected.
551         int menuItemId = menuItem.getItemId();
552
553         switch (menuItemId) {
554             case android.R.id.home:  // The home arrow is identified as `android.R.id.home`, not just `R.id.home`.
555                 if (currentFolder.isEmpty()) {  // Currently in the home folder.
556                     // Return to `MainWebViewActivity`.
557                     NavUtils.navigateUpFromSameTask(this);
558                 } else {  // Currently in a subfolder.
559                     // Place the former parent folder in `currentFolder`.
560                     currentFolder = bookmarksDatabaseHelper.getParentFolder(currentFolder);
561
562                     // Load the new folder.
563                     loadFolder();
564                 }
565                 break;
566
567             case R.id.options_menu_select_all_bookmarks:
568                 // Get the total number of bookmarks.
569                 int numberOfBookmarks = bookmarksListView.getCount();
570
571                 // Select them all.
572                 for (int i = 0; i < numberOfBookmarks; i++) {
573                     bookmarksListView.setItemChecked(i, true);
574                 }
575                 break;
576
577             case R.id.bookmarks_database_view:
578                 // Launch `BookmarksDatabaseViewActivity`.
579                 Intent bookmarksDatabaseViewIntent = new Intent(this, BookmarksDatabaseViewActivity.class);
580                 startActivity(bookmarksDatabaseViewIntent);
581                 break;
582         }
583         return true;
584     }
585
586     @Override
587     public void onBackPressed() {
588         if (currentFolder.isEmpty()) {  // Currently in the home folder.
589             // Exit `BookmarksActivity`.
590             super.onBackPressed();
591         } else {  // Currently in a subfolder.
592             // Place the former parent folder in `currentFolder`.
593             currentFolder = bookmarksDatabaseHelper.getParentFolder(currentFolder);
594
595             // Load the new folder.
596             loadFolder();
597         }
598     }
599
600     @Override
601     public void onCreateBookmark(AppCompatDialogFragment dialogFragment) {
602         // Get the `EditTexts` from the `dialogFragment`.
603         EditText createBookmarkNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_bookmark_name_edittext);
604         EditText createBookmarkUrlEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_bookmark_url_edittext);
605
606         // Extract the strings from the `EditTexts`.
607         String bookmarkNameString = createBookmarkNameEditText.getText().toString();
608         String bookmarkUrlString = createBookmarkUrlEditText.getText().toString();
609
610         // Convert the favoriteIcon Bitmap to a byte array.
611         ByteArrayOutputStream favoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
612         // `0` is for lossless compression (the only option for a PNG).
613         MainWebViewActivity.favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, favoriteIconByteArrayOutputStream);
614         byte[] favoriteIconByteArray = favoriteIconByteArrayOutputStream.toByteArray();
615
616         // Display the new bookmark below the current items in the (0 indexed) list.
617         int newBookmarkDisplayOrder = bookmarksListView.getCount();
618
619         // Create the bookmark.
620         bookmarksDatabaseHelper.createBookmark(bookmarkNameString, bookmarkUrlString, newBookmarkDisplayOrder, currentFolder, favoriteIconByteArray);
621
622         // Update `bookmarksCursor` with the current contents of this folder.
623         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
624
625         // Update the `ListView`.
626         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
627
628         // Scroll to the new bookmark.
629         bookmarksListView.setSelection(newBookmarkDisplayOrder);
630     }
631
632     @Override
633     public void onCreateBookmarkFolder(AppCompatDialogFragment dialogFragment) {
634         // Get handles for the views in `dialogFragment`.
635         EditText createFolderNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_folder_name_edittext);
636         RadioButton defaultFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon_radiobutton);
637         ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon);
638
639         // Get new folder name string.
640         String folderNameString = createFolderNameEditText.getText().toString();
641
642         // Get the new folder icon `Bitmap`.
643         Bitmap folderIconBitmap;
644         if (defaultFolderIconRadioButton.isChecked()) {  // Use the default folder icon.
645             // Get the default folder icon and convert it to a `Bitmap`.
646             Drawable folderIconDrawable = folderIconImageView.getDrawable();
647             BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
648             folderIconBitmap = folderIconBitmapDrawable.getBitmap();
649         } else {  // Use the `WebView` favorite icon.
650             folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
651         }
652
653         // Convert `folderIconBitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
654         ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
655         folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
656         byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
657
658         // Move all the bookmarks down one in the display order.
659         for (int i = 0; i < bookmarksListView.getCount(); i++) {
660             int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
661             bookmarksDatabaseHelper.updateDisplayOrder(databaseId, i + 1);
662         }
663
664         // Create the folder, placing it at the top of the ListView
665         bookmarksDatabaseHelper.createFolder(folderNameString, 0, currentFolder, folderIconByteArray);
666
667         // Update `bookmarksCursor` with the current contents of this folder.
668         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
669
670         // Update the `ListView`.
671         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
672
673         // Scroll to the new folder.
674         bookmarksListView.setSelection(0);
675     }
676
677     @Override
678     public void onSaveEditBookmark(AppCompatDialogFragment dialogFragment) {
679         // Get handles for the views from `dialogFragment`.
680         EditText editBookmarkNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_name_edittext);
681         EditText editBookmarkUrlEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_url_edittext);
682         RadioButton currentBookmarkIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_current_icon_radiobutton);
683
684         // Store the bookmark strings.
685         String bookmarkNameString = editBookmarkNameEditText.getText().toString();
686         String bookmarkUrlString = editBookmarkUrlEditText.getText().toString();
687
688         // Get an array of the selected row IDs.
689         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
690
691         // Get the database ID of the selected bookmark.  Editing a bookmark is only possible where only one item is selected.
692         int selectedBookmarkDatabaseId = (int) selectedBookmarksLongArray[0];
693
694         // Update the bookmark.
695         if (currentBookmarkIconRadioButton.isChecked()) {  // Update the bookmark without changing the favorite icon.
696             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString);
697         } else {  // Update the bookmark using the `WebView` favorite icon.
698             // Convert the favorite icon to a byte array.  `0` is for lossless compression (the only option for a PNG).
699             ByteArrayOutputStream newFavoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
700             MainWebViewActivity.favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFavoriteIconByteArrayOutputStream);
701             byte[] newFavoriteIconByteArray = newFavoriteIconByteArrayOutputStream.toByteArray();
702
703             //  Update the bookmark and the favorite icon.
704             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, newFavoriteIconByteArray);
705         }
706
707         // Close the contextual action mode.
708         contextualActionMode.finish();
709
710         // Update `bookmarksCursor` with the current contents of this folder.
711         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
712
713         // Update the `ListView`.
714         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
715     }
716
717     @Override
718     public void onSaveEditBookmarkFolder(AppCompatDialogFragment dialogFragment) {
719         // Get handles for the views from `dialogFragment`.
720         EditText editFolderNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_folder_name_edittext);
721         RadioButton currentFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_folder_current_icon_radiobutton);
722         RadioButton defaultFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon_radiobutton);
723         ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon);
724
725         // Get the new folder name.
726         String newFolderNameString = editFolderNameEditText.getText().toString();
727
728         // Get an array of the selected row IDs.
729         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
730
731         // Get the database ID of the selected bookmark.  Editing a folder is only possible where only one item is selected.
732         int selectedFolderDatabaseId = (int) selectedBookmarksLongArray[0];
733
734         // Check if the favorite icon has changed.
735         if (currentFolderIconRadioButton.isChecked()) {  // Only the name has changed.
736             // Update the name in the database.
737             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString);
738         } else if (!currentFolderIconRadioButton.isChecked() && newFolderNameString.equals(oldFolderNameString)) {  // Only the icon has changed.
739             // Get the new folder icon `Bitmap`.
740             Bitmap folderIconBitmap;
741             if (defaultFolderIconRadioButton.isChecked()) {
742                 // Get the default folder icon and convert it to a `Bitmap`.
743                 Drawable folderIconDrawable = folderIconImageView.getDrawable();
744                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
745                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
746             } else {  // Use the `WebView` favorite icon.
747                 folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
748             }
749
750             // Convert the folder `Bitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
751             ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
752             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
753             byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
754
755             // Update the folder icon in the database.
756             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, folderIconByteArray);
757         } else {  // The folder icon and the name have changed.
758             // Get the new folder icon `Bitmap`.
759             Bitmap folderIconBitmap;
760             if (defaultFolderIconRadioButton.isChecked()) {
761                 // Get the default folder icon and convert it to a `Bitmap`.
762                 Drawable folderIconDrawable = folderIconImageView.getDrawable();
763                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
764                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
765             } else {  // Use the `WebView` favorite icon.
766                 folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
767             }
768
769             // Convert the folder `Bitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
770             ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
771             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
772             byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
773
774             // Update the folder name and icon in the database.
775             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString, folderIconByteArray);
776         }
777
778         // Update `bookmarksCursor` with the current contents of this folder.
779         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
780
781         // Update the `ListView`.
782         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
783
784         // Close the contextual action mode.
785         contextualActionMode.finish();
786     }
787
788     @Override
789     public void onMoveToFolder(AppCompatDialogFragment dialogFragment) {
790         // Get a handle for the `ListView` from `dialogFragment`.
791         ListView folderListView = (ListView) dialogFragment.getDialog().findViewById(R.id.move_to_folder_listview);
792
793         // Store a long array of the selected folders.
794         long[] newFolderLongArray = folderListView.getCheckedItemIds();
795
796         // Get the new folder database ID.  Only one folder will be selected.
797         int newFolderDatabaseId = (int) newFolderLongArray[0];
798
799         // Instantiate `newFolderName`.
800         String newFolderName;
801
802         // Set the new folder name.
803         if (newFolderDatabaseId == 0) {
804             // The new folder is the home folder, represented as `""` in the database.
805             newFolderName = "";
806         } else {
807             // Get the new folder name from the database.
808             newFolderName = bookmarksDatabaseHelper.getFolderName(newFolderDatabaseId);
809         }
810
811         // Get a long array with the the database ID of the selected bookmarks.
812         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
813
814         // Move each of the selected bookmarks to the new folder.
815         for (long databaseIdLong : selectedBookmarksLongArray) {
816             // Get `databaseIdInt` for each selected bookmark.
817             int databaseIdInt = (int) databaseIdLong;
818
819             // Move the selected bookmark to the new folder.
820             bookmarksDatabaseHelper.moveToFolder(databaseIdInt, newFolderName);
821         }
822
823         // Update `bookmarksCursor` with the current contents of this folder.
824         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
825
826         // Update the `ListView`.
827         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
828
829         // Close the contextual app bar.
830         contextualActionMode.finish();
831     }
832
833     private void deleteBookmarkFolderContents(int databaseId) {
834         // Get the name of the folder.
835         String folderName = bookmarksDatabaseHelper.getFolderName(databaseId);
836
837         // Get the contents of the folder.
838         Cursor folderCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(folderName);
839
840         // Delete each of the bookmarks in the folder.
841         for (int i = 0; i < folderCursor.getCount(); i++) {
842             // Move `folderCursor` to the current row.
843             folderCursor.moveToPosition(i);
844
845             // Get the database ID of the item.
846             int itemDatabaseId = folderCursor.getInt(folderCursor.getColumnIndex(BookmarksDatabaseHelper._ID));
847
848             // If this is a folder, recursively delete the contents first.
849             if (bookmarksDatabaseHelper.isFolder(itemDatabaseId)) {
850                 deleteBookmarkFolderContents(itemDatabaseId);
851             }
852
853             // Delete the bookmark.
854             bookmarksDatabaseHelper.deleteBookmark(itemDatabaseId);
855         }
856     }
857
858     private void updateMoveIcons() {
859         // Get a long array of the selected bookmarks.
860         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
861
862         // Get the database IDs for the first, last, and selected bookmarks.
863         int selectedBookmarkDatabaseId = (int) selectedBookmarksLongArray[0];
864         int firstBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(0);
865         // bookmarksListView is 0 indexed.
866         int lastBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(bookmarksListView.getCount() - 1);
867
868         // Update the move bookmark up `MenuItem`.
869         if (selectedBookmarkDatabaseId == firstBookmarkDatabaseId) {  // The selected bookmark is in the first position.
870             // Disable the move bookmark up `MenuItem`.
871             moveBookmarkUpMenuItem.setEnabled(false);
872
873             //  Set the move bookmark up icon to be ghosted.
874             moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_disabled);
875         } else {  // The selected bookmark is not in the first position.
876             // Enable the move bookmark up `MenuItem`.
877             moveBookmarkUpMenuItem.setEnabled(true);
878
879             // Set the icon according to the theme.
880             if (MainWebViewActivity.darkTheme) {
881                 moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_enabled_dark);
882             } else {
883                 moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_enabled_light);
884             }
885         }
886
887         // Update the move bookmark down `MenuItem`.
888         if (selectedBookmarkDatabaseId == lastBookmarkDatabaseId) {  // The selected bookmark is in the last position.
889             // Disable the move bookmark down `MenuItem`.
890             moveBookmarkDownMenuItem.setEnabled(false);
891
892             // Set the move bookmark down icon to be ghosted.
893             moveBookmarkDownMenuItem.setIcon(R.drawable.move_down_disabled);
894         } else {  // The selected bookmark is not in the last position.
895             // Enable the move bookmark down `MenuItem`.
896             moveBookmarkDownMenuItem.setEnabled(true);
897
898             // Set the icon according to the theme.
899             if (MainWebViewActivity.darkTheme) {
900                 moveBookmarkDownMenuItem.setIcon(R.drawable.move_down_enabled_dark);
901             } else {
902                 moveBookmarkDownMenuItem.setIcon(R.drawable.move_down_enabled_light);
903             }
904         }
905     }
906
907     private void scrollBookmarks(int selectedBookmarkPosition) {
908         // Get the first and last visible bookmark positions.
909         int firstVisibleBookmarkPosition = bookmarksListView.getFirstVisiblePosition();
910         int lastVisibleBookmarkPosition = bookmarksListView.getLastVisiblePosition();
911
912         // Calculate the number of bookmarks per screen.
913         int numberOfBookmarksPerScreen = lastVisibleBookmarkPosition - firstVisibleBookmarkPosition;
914
915         // Scroll with the moved bookmark if necessary.
916         if (selectedBookmarkPosition <= firstVisibleBookmarkPosition) {  // The selected bookmark position is at or above the top of the screen.
917             // Scroll to the selected bookmark position.
918             bookmarksListView.setSelection(selectedBookmarkPosition);
919         } else if (selectedBookmarkPosition >= (lastVisibleBookmarkPosition - 1)) {  // The selected bookmark is at or below the bottom of the screen.  The `-1` handles partial bookmarks displayed at the bottom of the `ListView`.
920             // Scroll to display the selected bookmark at the bottom of the screen.  `+1` assured that the entire bookmark will be displayed in situations where only a partial bookmark fits at the bottom of the `ListView`.
921             bookmarksListView.setSelection(selectedBookmarkPosition - numberOfBookmarksPerScreen + 1);
922         }
923     }
924
925     private void loadFolder() {
926         // Update `bookmarksCursor` with the contents of the bookmarks database for the current folder.
927         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentFolder);
928
929         // Setup a `CursorAdapter`.  `this` specifies the `Context`.  `false` disables `autoRequery`.
930         bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
931             @Override
932             public View newView(Context context, Cursor cursor, ViewGroup parent) {
933                 // Inflate the individual item layout.  `false` does not attach it to the root.
934                 return getLayoutInflater().inflate(R.layout.bookmarks_activity_item_linearlayout, parent, false);
935             }
936
937             @Override
938             public void bindView(View view, Context context, Cursor cursor) {
939                 // Get handles for the views.
940                 ImageView bookmarkFavoriteIcon = (ImageView) view.findViewById(R.id.bookmark_favorite_icon);
941                 TextView bookmarkNameTextView = (TextView) view.findViewById(R.id.bookmark_name);
942
943                 // Get the favorite icon byte array from the `Cursor`.
944                 byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
945
946                 // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
947                 Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length);
948
949                 // Display the bitmap in `bookmarkFavoriteIcon`.
950                 bookmarkFavoriteIcon.setImageBitmap(favoriteIconBitmap);
951
952                 // Get the bookmark name from the cursor and display it in `bookmarkNameTextView`.
953                 String bookmarkNameString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
954                 bookmarkNameTextView.setText(bookmarkNameString);
955
956                 // Make the font bold for folders.
957                 if (cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
958                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT_BOLD);
959                 } else {  // Reset the font to default for normal bookmarks.
960                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT);
961                 }
962             }
963         };
964
965         // Populate the `ListView` with the adapter.
966         bookmarksListView.setAdapter(bookmarksCursorAdapter);
967
968         // Set the `AppBar` title.
969         if (currentFolder.isEmpty()) {
970             appBar.setTitle(R.string.bookmarks);
971         } else {
972             appBar.setTitle(currentFolder);
973         }
974     }
975 }