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, EditBookmarkFolderDialog.EditBookmarkFolderListener,
  65         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()`,
  68     // `onCreateBookmarkCreate()`, `updateBookmarksListView()`, and `updateBookmarksListViewExcept()`.
  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()`, `onCreateBookmarkCreate`, `onCreateBookmarkFolderCreate`, and `onEditBookmarkSave`.
  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 `onActionItemClicked`.
  77     public static long[] checkedItemIds;
  78
  79
  80     // `bookmarksListView` is used in `onCreate()`, `updateBookmarksListView()`, and `updateBookmarksListViewExcept()`.
  81     private ListView bookmarksListView;
  82
  83     // `contextualActionMode` is used in `onCreate()` and `onEditBookmarkSave()`.
  84     private ActionMode contextualActionMode;
  85
  86     // `bookmarkListViewPosition` is used in `onCreate()`, `onSaveEditBookmark()`, and `onSaveEditBookmarkFolder()`.
  87     private int bookmarksListViewPosition;
  88
  89     // `appBar` is used in `onCreate()` and `updateBookmarksListView()`.
  90     private ActionBar appBar;
  91
  92     // `bookmarksCursor` is used in `onCreate()`, `updateBookmarksListView()`, and `updateBookmarksListViewExcept()`.
  93     private Cursor bookmarksCursor;
  94
  95     // `oldFolderName` is used in `onCreate()` and `onEditBookmarkFolderSave()`.
  96     private String oldFolderNameString;
  97
  98     @Override
  99     protected void onCreate(Bundle savedInstanceState) {
 100         // Set the activity theme.
 101         if (MainWebViewActivity.darkTheme) {
 102             setTheme(R.style.PrivacyBrowserDark_SecondaryActivity);
 103         } else {
 104             setTheme(R.style.PrivacyBrowserLight_SecondaryActivity);
 105         }
 106
 107         // Run the default commands.
 108         super.onCreate(savedInstanceState);
 109
 110         // Set the content view.
 111         setContentView(R.layout.bookmarks_coordinatorlayout);
 112
 113         // Use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21.
 114         final Toolbar bookmarksAppBar = (Toolbar) findViewById(R.id.bookmarks_toolbar);
 115         setSupportActionBar(bookmarksAppBar);
 116
 117         // Display the home arrow on `SupportActionBar`.
 118         appBar = getSupportActionBar();
 119         assert appBar != null;// This assert removes the incorrect warning in Android Studio on the following line that `appBar` might be null.
 120         appBar.setDisplayHomeAsUpEnabled(true);
 121
 122
 123         // Initialize the database helper and the `ListView`.  `this` specifies the context.  The two `nulls` do not specify the database name or a `CursorFactory`.
 124         // The `0` specifies a database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
 125         bookmarksDatabaseHelper = new BookmarksDatabaseHelper(this, null, null, 0);
 126         bookmarksListView = (ListView) findViewById(R.id.bookmarks_listview);
 127
 128         // Set currentFolder to the home folder, which is `""` in the database.
 129         currentFolder = "";
 130
 131         // Display the bookmarks in the ListView.
 132         updateBookmarksListView(currentFolder);
 133
 134         // Set a listener so that tapping a list item loads the URL.  We need to store the activity in a variable so that we can return to the parent activity after loading the URL.
 135         final Activity bookmarksActivity = this;
 136         bookmarksListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
 137             @Override
 138             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 139                 // Convert the id from long to int to match the format of the bookmarks database.
 140                 int databaseID = (int) id;
 141
 142                 // Get the bookmark `Cursor` for this ID and move it to the first row.
 143                 Cursor bookmarkCursor = bookmarksDatabaseHelper.getBookmarkCursor(databaseID);
 144                 bookmarkCursor.moveToFirst();
 145
 146                 // If the bookmark is a folder load its contents into the ListView.
 147                 if (bookmarkCursor.getInt(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
 148                     // Update `currentFolder`.
 149                     currentFolder = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 150
 151                     // Reload the ListView with `currentFolder`.
 152                     updateBookmarksListView(currentFolder);
 153                 } else {  // Load the URL into `mainWebView`.
 154                     // Get the bookmark URL and assign it to formattedUrlString.  `mainWebView` will automatically reload when `BookmarksActivity` closes.
 155                     MainWebViewActivity.formattedUrlString = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL));
 156
 157                     NavUtils.navigateUpFromSameTask(bookmarksActivity);
 158                 }
 159
 160                 // Close the `Cursor`.
 161                 bookmarkCursor.close();
 162             }
 163         });
 164
 165         // `MultiChoiceModeListener` handles long clicks.
 166         bookmarksListView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
 167             // `moveBookmarkUpMenuItem` is used in `onCreateActionMode()` and `onItemCheckedStateChanged`.
 168             MenuItem moveBookmarkUpMenuItem;
 169
 170             // `moveBookmarkDownMenuItem` is used in `onCreateActionMode()` and `onItemCheckedStateChanged`.
 171             MenuItem moveBookmarkDownMenuItem;
 172
 173             // `editBookmarkMenuItem` is used in `onCreateActionMode()` and `onItemCheckedStateChanged`.
 174             MenuItem editBookmarkMenuItem;
 175
 176             // `selectAllBookmarks` is used in `onCreateActionMode()` and `onItemCheckedStateChanges`.
 177             MenuItem selectAllBookmarksMenuItem;
 178
 179             @Override
 180             public boolean onCreateActionMode(ActionMode mode, Menu menu) {
 181                 // Inflate the menu for the contextual app bar and set the title.
 182                 getMenuInflater().inflate(R.menu.bookmarks_context_menu, menu);
 183
 184                 // Set the title.
 185                 if (currentFolder.isEmpty()) {
 186                     // Use `R.string.bookmarks` if we are in the home folder.
 187                     mode.setTitle(R.string.bookmarks);
 188                 } else {  // Use the current folder name as the title.
 189                     mode.setTitle(currentFolder);
 190                 }
 191
 192                 // Get a handle for MenuItems we need to selectively disable.
 193                 moveBookmarkUpMenuItem = menu.findItem(R.id.move_bookmark_up);
 194                 moveBookmarkDownMenuItem = menu.findItem(R.id.move_bookmark_down);
 195                 editBookmarkMenuItem = menu.findItem(R.id.edit_bookmark);
 196                 selectAllBookmarksMenuItem = menu.findItem(R.id.context_menu_select_all_bookmarks);
 197
 198                 // Store `contextualActionMode` so we can close it programatically.
 199                 contextualActionMode = mode;
 200
 201                 return true;
 202             }
 203
 204             @Override
 205             public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
 206                 // Get a handle for the move to folder menu item.
 207                 MenuItem moveToFolderMenuItem = menu.findItem(R.id.move_to_folder);
 208
 209                 // Get a `Cursor` with all of the folders.
 210                 Cursor folderCursor = bookmarksDatabaseHelper.getAllFoldersCursor();
 211
 212                 // Enable the move to folder menu item if at least one folder exists.
 213                 moveToFolderMenuItem.setVisible(folderCursor.getCount() > 0);
 214
 215                 // `return true` indicates that the menu has been updated.
 216                 return true;
 217             }
 218
 219             @Override
 220             public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
 221                 // Get an array of the selected bookmarks.
 222                 long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 223
 224                 // Calculate the number of selected bookmarks.
 225                 int numberOfSelectedBookmarks = selectedBookmarksLongArray.length;
 226
 227                 // Adjust the `mode` and the menu for the number of selected bookmarks.
 228                 if (numberOfSelectedBookmarks == 0) {
 229                     mode.finish();
 230                 } else if (numberOfSelectedBookmarks == 1) {
 231                     // List the number of selected bookmarks in the subtitle.
 232                     mode.setSubtitle(getString(R.string.one_selected));
 233
 234                     // Show the `Move Up`, `Move Down`, and  `Edit` options.
 235                     moveBookmarkUpMenuItem.setVisible(true);
 236                     moveBookmarkDownMenuItem.setVisible(true);
 237                     editBookmarkMenuItem.setVisible(true);
 238
 239                     // Get the database IDs for the bookmarks.
 240                     int selectedBookmarkDatabaseId = (int) selectedBookmarksLongArray[0];
 241                     int firstBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(0);
 242                     // bookmarksListView is 0 indexed.
 243                     int lastBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(bookmarksListView.getCount() - 1);
 244
 245                     // Disable `moveBookmarkUpMenuItem` if the selected bookmark is at the top of the ListView.
 246                     if (selectedBookmarkDatabaseId == firstBookmarkDatabaseId) {
 247                         moveBookmarkUpMenuItem.setEnabled(false);
 248                         moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_disabled);
 249                     } else {  // Otherwise enable `moveBookmarkUpMenuItem`.
 250                         moveBookmarkUpMenuItem.setEnabled(true);
 251
 252                         // Set the icon according to the theme.
 253                         if (MainWebViewActivity.darkTheme) {
 254                             moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_enabled_dark);
 255                         } else {
 256                             moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_enabled_light);
 257                         }
 258                     }
 259
 260                     // Disable `moveBookmarkDownMenuItem` if the selected bookmark is at the bottom of the ListView.
 261                     if (selectedBookmarkDatabaseId == lastBookmarkDatabaseId) {
 262                         moveBookmarkDownMenuItem.setEnabled(false);
 263                         moveBookmarkDownMenuItem.setIcon(R.drawable.move_down_disabled);
 264                     } else {  // Otherwise enable `moveBookmarkDownMenuItem`.
 265                         moveBookmarkDownMenuItem.setEnabled(true);
 266
 267                         // Set the icon according to the theme.
 268                         if (MainWebViewActivity.darkTheme) {
 269                             moveBookmarkDownMenuItem.setIcon(R.drawable.move_down_enabled_dark);
 270                         } else {
 271                             moveBookmarkDownMenuItem.setIcon(R.drawable.move_down_enabled_light);
 272                         }
 273                     }
 274                 } else {  // More than one bookmark is selected.
 275                     // List the number of selected bookmarks in the subtitle.
 276                     mode.setSubtitle(numberOfSelectedBookmarks + " " + getString(R.string.selected));
 277
 278                     // Hide non-applicable `MenuItems`.
 279                     moveBookmarkUpMenuItem.setVisible(false);
 280                     moveBookmarkDownMenuItem.setVisible(false);
 281                     editBookmarkMenuItem.setVisible(false);
 282                 }
 283
 284                 // Do not show `Select All` if all the bookmarks are already checked.
 285                 if (bookmarksListView.getCheckedItemIds().length == bookmarksListView.getCount()) {
 286                     selectAllBookmarksMenuItem.setVisible(false);
 287                 } else {
 288                     selectAllBookmarksMenuItem.setVisible(true);
 289                 }
 290             }
 291
 292             @Override
 293             public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
 294                 // Get the menu item ID.
 295                 int menuItemId = item.getItemId();
 296
 297                 // Instantiate the common variables.
 298                 int numberOfBookmarks;
 299                 int selectedBookmarkPosition;
 300                 int selectedBookmarkNewPosition;
 301                 final SparseBooleanArray selectedBookmarksPositionsSparseBooleanArray;
 302
 303                 switch (menuItemId) {
 304                     case R.id.move_bookmark_up:
 305                         // Get the array of checked bookmarks.
 306                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
 307
 308                         // Store the position of the selected bookmark.
 309                         selectedBookmarkPosition = selectedBookmarksPositionsSparseBooleanArray.keyAt(0);
 310
 311                         // Initialize `selectedBookmarkNewPosition`.
 312                         selectedBookmarkNewPosition = 0;
 313
 314                         // Iterate through the bookmarks.
 315                         for (int i = 0; i < bookmarksListView.getCount(); i++) {
 316                             // Get the database ID for the current bookmark.
 317                             int currentBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 318
 319                             // Update the display order for the current bookmark.
 320                             if (i == selectedBookmarkPosition) {  // The current bookmark is the selected bookmark.
 321                                 // Move the current bookmark up one.
 322                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i - 1);
 323                                 selectedBookmarkNewPosition = i - 1;
 324                             } else if ((i + 1) == selectedBookmarkPosition){  // The current bookmark is immediately above the selected bookmark.
 325                                 // Move the current bookmark down one.
 326                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i + 1);
 327                             } else {  // The current bookmark is not changing positions.
 328                                 // Move `bookmarksCursor` to the current bookmark position.
 329                                 bookmarksCursor.moveToPosition(i);
 330
 331                                 // Update the display order only if it is not correct in the database.
 332                                 if (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)) != i) {
 333                                     bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i);
 334                                 }
 335                             }
 336                         }
 337
 338                         // Refresh the ListView.
 339                         updateBookmarksListView(currentFolder);
 340
 341                         // Select the previously selected bookmark in the new location.
 342                         bookmarksListView.setItemChecked(selectedBookmarkNewPosition, true);
 343
 344                         // Scroll `bookmarksListView` to five items above `selectedBookmarkNewPosition`.
 345                         bookmarksListView.setSelection(selectedBookmarkNewPosition - 5);
 346
 347                         break;
 348
 349                     case R.id.move_bookmark_down:
 350                         // Get the array of checked bookmarks.
 351                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
 352
 353                         // Store the position of the selected bookmark.
 354                         selectedBookmarkPosition = selectedBookmarksPositionsSparseBooleanArray.keyAt(0);
 355
 356                         // Initialize `selectedBookmarkNewPosition`.
 357                         selectedBookmarkNewPosition = 0;
 358
 359                         // Iterate through the bookmarks.
 360                         for (int i = 0; i <bookmarksListView.getCount(); i++) {
 361                             // Get the database ID for the current bookmark.
 362                             int currentBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 363
 364                             // Update the display order for the current bookmark.
 365                             if (i == selectedBookmarkPosition) {  // The current bookmark is the selected bookmark.
 366                                 // Move the current bookmark down one.
 367                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i + 1);
 368                                 selectedBookmarkNewPosition = i + 1;
 369                             } else if ((i - 1) == selectedBookmarkPosition) {  // The current bookmark is immediately below the selected bookmark.
 370                                 // Move the bookmark below the selected bookmark up one.
 371                                 bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i - 1);
 372                             } else {  // The current bookmark is not changing positions.
 373                                 // Move `bookmarksCursor` to the current bookmark position.
 374                                 bookmarksCursor.moveToPosition(i);
 375
 376                                 // Update the display order only if it is not correct in the database.
 377                                 if (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)) != i) {
 378                                     bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i);
 379                                 }
 380                             }
 381                         }
 382
 383                         // Refresh the ListView.
 384                         updateBookmarksListView(currentFolder);
 385
 386                         // Select the previously selected bookmark in the new location.
 387                         bookmarksListView.setItemChecked(selectedBookmarkNewPosition, true);
 388
 389                         // Scroll `bookmarksListView` to five items above `selectedBookmarkNewPosition`.
 390                         bookmarksListView.setSelection(selectedBookmarkNewPosition - 5);
 391                         break;
 392
 393                     case R.id.move_to_folder:
 394                         // Store `checkedItemIds` for use by the `AlertDialog`.
 395                         checkedItemIds = bookmarksListView.getCheckedItemIds();
 396
 397                         // Show the `MoveToFolderDialog` `AlertDialog` and name the instance `@string/move_to_folder
 398                         AppCompatDialogFragment moveToFolderDialog = new MoveToFolderDialog();
 399                         moveToFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.move_to_folder));
 400                         break;
 401
 402                     case R.id.edit_bookmark:
 403                         // Store the scroll position of the bookmarks `ListView`.
 404                         bookmarksListViewPosition = bookmarksListView.getFirstVisiblePosition();
 405
 406                         // Get the array of checked bookmarks.
 407                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions();
 408
 409                         // Get the position of the selected bookmark.
 410                         selectedBookmarkPosition = selectedBookmarksPositionsSparseBooleanArray.keyAt(0);
 411
 412                         // Move to the selected database ID and find out if it is a folder.
 413                         bookmarksCursor.moveToPosition(selectedBookmarkPosition);
 414                         boolean isFolder = (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1);
 415
 416                         // Store `checkedItemIds` for use by the `AlertDialog`.
 417                         checkedItemIds = bookmarksListView.getCheckedItemIds();
 418
 419                         if (isFolder) {
 420                             // Save the current folder name.
 421                             oldFolderNameString = bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 422
 423                             // Show the `EditBookmarkFolderDialog` `AlertDialog` and name the instance `@string/edit_folder`.
 424                             AppCompatDialogFragment editFolderDialog = new EditBookmarkFolderDialog();
 425                             editFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_folder));
 426                         } else {
 427                             // Show the `EditBookmarkDialog` `AlertDialog` and name the instance `@string/edit_bookmark`.
 428                             AppCompatDialogFragment editBookmarkDialog = new EditBookmarkDialog();
 429                             editBookmarkDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_bookmark));
 430                         }
 431                         break;
 432
 433                     case R.id.delete_bookmark:
 434                         // Get an array of the selected rows IDs.
 435                         final long[] selectedBookmarksIdsLongArray = bookmarksListView.getCheckedItemIds();
 436
 437                         // 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.
 438                         selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions().clone();
 439
 440                         // Store the current scroll position for the purpose of restoring it on undelete.
 441                         final int scrollPositionBeforeDelete = bookmarksListView.getFirstVisiblePosition();
 442
 443                         // Store the scroll position of the bookmarks `ListView`.
 444                         bookmarksListViewPosition = bookmarksListView.getFirstVisiblePosition();
 445
 446                         // Display the bookmarks except for those that are going to be deleted.
 447                         updateBookmarksListViewExcept(selectedBookmarksIdsLongArray, currentFolder);
 448
 449                         // Restore the scroll position.
 450                         bookmarksListView.setSelection(bookmarksListViewPosition);
 451
 452                         // Create `snackbarMessage`.
 453                         String snackbarMessage;
 454
 455                         // Determine how many items are in the array and prepare an appropriate Snackbar message.
 456                         if (selectedBookmarksIdsLongArray.length == 1) {
 457                             snackbarMessage = getString(R.string.one_bookmark_deleted);
 458                         } else {
 459                             snackbarMessage = selectedBookmarksIdsLongArray.length + " " + getString(R.string.bookmarks_deleted);
 460                         }
 461
 462                         // Show a SnackBar.
 463                         Snackbar.make(findViewById(R.id.bookmarks_coordinatorlayout), snackbarMessage, Snackbar.LENGTH_LONG)
 464                                 .setAction(R.string.undo, new View.OnClickListener() {
 465                                     @Override
 466                                     public void onClick(View view) {
 467                                         // Do nothing because everything will be handled by `onDismissed()` below.
 468                                     }
 469                                 })
 470                                 .addCallback(new Snackbar.Callback() {
 471                                     @Override
 472                                     public void onDismissed(Snackbar snackbar, int event) {
 473                                         switch (event) {
 474                                             // The user pushed the `Undo` button.
 475                                             case Snackbar.Callback.DISMISS_EVENT_ACTION:
 476                                                 // Refresh the ListView to show the rows again.
 477                                                 updateBookmarksListView(currentFolder);
 478
 479                                                 // Select the previously selected bookmarks.
 480                                                 for (int i = 0; i < selectedBookmarksPositionsSparseBooleanArray.size(); i++) {
 481                                                     bookmarksListView.setItemChecked(selectedBookmarksPositionsSparseBooleanArray.keyAt(i), true);
 482                                                 }
 483
 484                                                 // Restore the scroll position.
 485                                                 bookmarksListView.setSelection(scrollPositionBeforeDelete);
 486                                                 break;
 487
 488                                             // The `Snackbar` was dismissed without the `Undo` button being pushed.
 489                                             default:
 490                                                 // Delete each selected row.
 491                                                 for (long databaseIdLong : selectedBookmarksIdsLongArray) {
 492                                                     // Convert `databaseIdLong` to an int.
 493                                                     int databaseIdInt = (int) databaseIdLong;
 494
 495                                                     if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
 496                                                         deleteBookmarkFolderContents(databaseIdInt);
 497                                                     }
 498
 499                                                     // Delete `databaseIdInt`.
 500                                                     bookmarksDatabaseHelper.deleteBookmark(databaseIdInt);
 501                                                 }
 502
 503                                                 // Update the display order.
 504                                                 for (int i = 0; i < bookmarksListView.getCount(); i++) {
 505                                                     // Get the database ID for the current bookmark.
 506                                                     int currentBookmarkDatabaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 507
 508                                                     // Move `bookmarksCursor` to the current bookmark position.
 509                                                     bookmarksCursor.moveToPosition(i);
 510
 511                                                     // Update the display order only if it is not correct in the database.
 512                                                     if (bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)) != i) {
 513                                                         bookmarksDatabaseHelper.updateDisplayOrder(currentBookmarkDatabaseId, i);
 514                                                     }
 515                                                 }
 516                                                 break;
 517                                         }
 518                                     }
 519                                 })
 520                                 .show();
 521
 522                         // Close the contextual app bar.
 523                         mode.finish();
 524                         break;
 525
 526                     case R.id.context_menu_select_all_bookmarks:
 527                         numberOfBookmarks = bookmarksListView.getCount();
 528
 529                         for (int i = 0; i < numberOfBookmarks; i++) {
 530                             bookmarksListView.setItemChecked(i, true);
 531                         }
 532                         break;
 533                 }
 534                 // Consume the click.
 535                 return true;
 536             }
 537
 538             @Override
 539             public void onDestroyActionMode(ActionMode mode) {
 540
 541             }
 542         });
 543
 544         // Get handles for the `FloatingActionButtons.
 545         FloatingActionButton createBookmarkFolderFab = (FloatingActionButton) findViewById(R.id.create_bookmark_folder_fab);
 546         FloatingActionButton createBookmarkFab = (FloatingActionButton) findViewById(R.id.create_bookmark_fab);
 547
 548         // Set the create new bookmark folder FAB to display the dialog box.
 549         createBookmarkFolderFab.setOnClickListener(new View.OnClickListener() {
 550             @Override
 551             public void onClick(View v) {
 552                 // Show the `CreateBookmarkFolderDialog` `AlertDialog` and name the instance `@string/create_folder`.
 553                 AppCompatDialogFragment createBookmarkFolderDialog = new CreateBookmarkFolderDialog();
 554                 createBookmarkFolderDialog.show(getSupportFragmentManager(), getResources().getString(R.string.create_folder));
 555             }
 556         });
 557
 558         // Set the create new bookmark FAB to display the dialog box.
 559         createBookmarkFab.setOnClickListener(new View.OnClickListener() {
 560             @Override
 561             public void onClick(View view) {
 562                 // Show the `CreateBookmarkDialog` `AlertDialog` and name the instance `@string/create_bookmark`.
 563                 AppCompatDialogFragment createBookmarkDialog = new CreateBookmarkDialog();
 564                 createBookmarkDialog.show(getSupportFragmentManager(), getResources().getString(R.string.create_bookmark));
 565             }
 566         });
 567     }
 568
 569     @Override
 570     public boolean onCreateOptionsMenu(Menu menu) {
 571         // Inflate the menu.
 572         getMenuInflater().inflate(R.menu.bookmarks_options_menu, menu);
 573
 574         // Success.
 575         return true;
 576     }
 577
 578     @Override
 579     public boolean onOptionsItemSelected(MenuItem menuItem) {
 580         // Get the ID of the `MenuItem` that was selected.
 581         int menuItemId = menuItem.getItemId();
 582
 583         switch (menuItemId) {
 584             case android.R.id.home:  // The home arrow is identified as `android.R.id.home`, not just `R.id.home`.
 585                 if (currentFolder.isEmpty()) {  // Exit BookmarksActivity if currently in the home folder.
 586                     NavUtils.navigateUpFromSameTask(this);
 587                 } else {  // Navigate up one folder.
 588                     // Place the former parent folder in `currentFolder`.
 589                     currentFolder = bookmarksDatabaseHelper.getParentFolder(currentFolder);
 590
 591                     // Update `bookmarksListView`.
 592                     updateBookmarksListView(currentFolder);
 593                 }
 594                 break;
 595
 596             case R.id.options_menu_select_all_bookmarks:
 597                 int numberOfBookmarks = bookmarksListView.getCount();
 598
 599                 for (int i = 0; i < numberOfBookmarks; i++) {
 600                     bookmarksListView.setItemChecked(i, true);
 601                 }
 602                 break;
 603
 604             case R.id.bookmarks_database_view:
 605                 // Launch `BookmarksDatabaseViewActivity`.
 606                 Intent bookmarksDatabaseViewIntent = new Intent(this, BookmarksDatabaseViewActivity.class);
 607                 startActivity(bookmarksDatabaseViewIntent);
 608                 break;
 609         }
 610         return true;
 611     }
 612
 613     @Override
 614     public void onBackPressed() {
 615         if (currentFolder.isEmpty()) {  // Exit BookmarksActivity if currently in the home folder.
 616             super.onBackPressed();
 617         } else {  // Navigate up one folder.
 618             // Place the former parent folder in `currentFolder`.
 619             currentFolder = bookmarksDatabaseHelper.getParentFolder(currentFolder);
 620
 621             // Reload the `ListView`.
 622             updateBookmarksListView(currentFolder);
 623         }
 624     }
 625
 626     @Override
 627     public void onCreateBookmark(AppCompatDialogFragment dialogFragment) {
 628         // Get the `EditTexts` from the `dialogFragment`.
 629         EditText createBookmarkNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_bookmark_name_edittext);
 630         EditText createBookmarkUrlEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_bookmark_url_edittext);
 631
 632         // Extract the strings from the `EditTexts`.
 633         String bookmarkNameString = createBookmarkNameEditText.getText().toString();
 634         String bookmarkUrlString = createBookmarkUrlEditText.getText().toString();
 635
 636         // Convert the favoriteIcon Bitmap to a byte array.
 637         ByteArrayOutputStream favoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
 638         // `0` is for lossless compression (the only option for a PNG).
 639         MainWebViewActivity.favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, favoriteIconByteArrayOutputStream);
 640         byte[] favoriteIconByteArray = favoriteIconByteArrayOutputStream.toByteArray();
 641
 642         // Display the new bookmark below the current items in the (0 indexed) list.
 643         int newBookmarkDisplayOrder = bookmarksListView.getCount();
 644
 645         // Create the bookmark.
 646         bookmarksDatabaseHelper.createBookmark(bookmarkNameString, bookmarkUrlString, newBookmarkDisplayOrder, currentFolder, favoriteIconByteArray);
 647
 648         // Refresh the `ListView`.  `setSelection` scrolls to the bottom of the list.
 649         updateBookmarksListView(currentFolder);
 650         bookmarksListView.setSelection(newBookmarkDisplayOrder);
 651     }
 652
 653     @Override
 654     public void onCreateBookmarkFolder(AppCompatDialogFragment dialogFragment) {
 655         // Get `create_folder_name_edit_text` and extract the string.
 656         EditText createFolderNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.create_folder_name_edittext);
 657         String folderNameString = createFolderNameEditText.getText().toString();
 658
 659         // Get the new folder icon `Bitmap`.
 660         RadioButton defaultFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon_radiobutton);
 661         Bitmap folderIconBitmap;
 662         if (defaultFolderIconRadioButton.isChecked()) {
 663             // Get the default folder icon `ImageView` from the `Dialog` and convert it to a `Bitmap`.
 664             ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon);
 665             Drawable folderIconDrawable = folderIconImageView.getDrawable();
 666             BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
 667             folderIconBitmap = folderIconBitmapDrawable.getBitmap();
 668         } else {  // Assign `favoriteIcon` from the `WebView`.
 669             folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
 670         }
 671
 672         // Convert `folderIconBitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
 673         ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
 674         folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
 675         byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
 676
 677         // Move all the bookmarks down one in the display order.
 678         for (int i = 0; i < bookmarksListView.getCount(); i++) {
 679             int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
 680             bookmarksDatabaseHelper.updateDisplayOrder(databaseId, i + 1);
 681         }
 682
 683         // Create the folder, placing it at the top of the ListView
 684         bookmarksDatabaseHelper.createFolder(folderNameString, 0, currentFolder, folderIconByteArray);
 685
 686         // Refresh the ListView.
 687         updateBookmarksListView(currentFolder);
 688     }
 689
 690     @Override
 691     public void onSaveEditBookmark(AppCompatDialogFragment dialogFragment) {
 692         // Get a long array with the the databaseId of the selected bookmark and convert it to an `int`.
 693         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 694         int selectedBookmarkDatabaseId = (int) selectedBookmarksLongArray[0];
 695
 696         // Get the `EditText`s from the `editBookmarkDialogFragment` and extract the strings.
 697         EditText editBookmarkNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_name_edittext);
 698         String bookmarkNameString = editBookmarkNameEditText.getText().toString();
 699         EditText editBookmarkUrlEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_url_edittext);
 700         String bookmarkUrlString = editBookmarkUrlEditText.getText().toString();
 701
 702         // Get `edit_bookmark_current_icon_radiobutton`.
 703         RadioButton currentBookmarkIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_bookmark_current_icon_radiobutton);
 704
 705         if (currentBookmarkIconRadioButton.isChecked()) {  // Update the bookmark without changing the favorite icon.
 706             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString);
 707         } else {  // Update the bookmark using the `WebView` favorite icon.
 708             ByteArrayOutputStream newFavoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
 709             MainWebViewActivity.favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFavoriteIconByteArrayOutputStream);
 710             byte[] newFavoriteIconByteArray = newFavoriteIconByteArrayOutputStream.toByteArray();
 711
 712             //  Update the bookmark and the favorite icon.
 713             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, newFavoriteIconByteArray);
 714         }
 715
 716         // Close the contextual action mode.
 717         contextualActionMode.finish();
 718
 719         // Refresh the `ListView`.  `setSelection` scrolls to the previous `ListView` position.
 720         updateBookmarksListView(currentFolder);
 721         bookmarksListView.setSelection(bookmarksListViewPosition);
 722     }
 723
 724     @Override
 725     public void onSaveEditBookmarkFolder(AppCompatDialogFragment dialogFragment) {
 726         // Get the new folder name.
 727         EditText editFolderNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.edit_folder_name_edittext);
 728         String newFolderNameString = editFolderNameEditText.getText().toString();
 729
 730         // Get a long array with the the database ID of the selected folder and convert it to an `int`.
 731         long[] selectedFolderLongArray = bookmarksListView.getCheckedItemIds();
 732         int selectedFolderDatabaseId = (int) selectedFolderLongArray[0];
 733
 734         // Get the `RadioButtons` from the `Dialog`.
 735         RadioButton currentFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_folder_current_icon_radiobutton);
 736         RadioButton defaultFolderIconRadioButton = (RadioButton) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon_radiobutton);
 737
 738         // Check if the favorite icon has changed.
 739         if (currentFolderIconRadioButton.isChecked()) {  // Only the name has changed.
 740             // Update the name in the database.
 741             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString);
 742         } else if (!currentFolderIconRadioButton.isChecked() && newFolderNameString.equals(oldFolderNameString)) {  // Only the icon has changed.
 743             // Get the new folder icon `Bitmap`.
 744             Bitmap folderIconBitmap;
 745             if (defaultFolderIconRadioButton.isChecked()) {
 746                 // Get the default folder icon `ImageView` from the `Drawable` and convert it to a `Bitmap`.
 747                 ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon);
 748                 Drawable folderIconDrawable = folderIconImageView.getDrawable();
 749                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
 750                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
 751             } else {  // Get the web page icon `ImageView` from the `Dialog`.
 752                 folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
 753             }
 754
 755             // Convert the folder `Bitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
 756             ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
 757             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
 758             byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
 759
 760             // Update the folder icon in the database.
 761             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, folderIconByteArray);
 762         } else {  // The folder icon and the name have changed.
 763             // Get the new folder icon `Bitmap`.
 764             Bitmap folderIconBitmap;
 765             if (defaultFolderIconRadioButton.isChecked()) {
 766                 // Get the default folder icon `ImageView` from the `Drawable` and convert it to a `Bitmap`.
 767                 ImageView folderIconImageView = (ImageView) dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon);
 768                 Drawable folderIconDrawable = folderIconImageView.getDrawable();
 769                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
 770                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
 771             } else {  // Get the web page icon `ImageView` from the `Dialog`.
 772                 folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
 773             }
 774
 775             // Convert the folder `Bitmap` to a byte array.  `0` is for lossless compression (the only option for a PNG).
 776             ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
 777             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
 778             byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
 779
 780             // Update the folder name and icon in the database.
 781             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString, folderIconByteArray);
 782         }
 783
 784         // Refresh the `ListView`.  `setSelection` scrolls to the previous `ListView` position.
 785         updateBookmarksListView(currentFolder);
 786         bookmarksListView.setSelection(bookmarksListViewPosition);
 787
 788         // Close the contextual action mode.
 789         contextualActionMode.finish();
 790     }
 791
 792     @Override
 793     public void onMoveToFolder(AppCompatDialogFragment dialogFragment) {
 794         // Get the new folder database id.
 795         ListView folderListView = (ListView) dialogFragment.getDialog().findViewById(R.id.move_to_folder_listview);
 796         long[] newFolderLongArray = folderListView.getCheckedItemIds();
 797
 798         // Get the new folder database ID.
 799         int newFolderDatabaseId = (int) newFolderLongArray[0];
 800
 801         // Instantiate `newFolderName`.
 802         String newFolderName;
 803
 804         if (newFolderDatabaseId == 0) {
 805             // The new folder is the home folder, represented as `""` in the database.
 806             newFolderName = "";
 807         } else {
 808             // Get the new folder name from the database.
 809             newFolderName = bookmarksDatabaseHelper.getFolderName(newFolderDatabaseId);
 810         }
 811
 812         // Get a long array with the the database ID of the selected bookmarks.
 813         long[] selectedBookmarksLongArray = bookmarksListView.getCheckedItemIds();
 814         for (long databaseIdLong : selectedBookmarksLongArray) {
 815             // Get `databaseIdInt` for each selected bookmark.
 816             int databaseIdInt = (int) databaseIdLong;
 817
 818             // Move the selected bookmark to the new folder.
 819             bookmarksDatabaseHelper.moveToFolder(databaseIdInt, newFolderName);
 820         }
 821
 822         // Refresh the `ListView`.
 823         updateBookmarksListView(currentFolder);
 824
 825         // Close the contextual app bar.
 826         contextualActionMode.finish();
 827     }
 828
 829     private void updateBookmarksListView(String folderName) {
 830         // Get a `Cursor` with the current contents of the bookmarks database.
 831         bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(folderName);
 832
 833         // Setup `bookmarksCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 834         CursorAdapter bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
 835             @Override
 836             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 837                 // Inflate the individual item layout.  `false` does not attach it to the root.
 838                 return getLayoutInflater().inflate(R.layout.bookmarks_item_linearlayout, parent, false);
 839             }
 840
 841             @Override
 842             public void bindView(View view, Context context, Cursor cursor) {
 843                 // Get the favorite icon byte array from the `Cursor`.
 844                 byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
 845
 846                 // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
 847                 Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length);
 848
 849                 // Display the bitmap in `bookmarkFavoriteIcon`.
 850                 ImageView bookmarkFavoriteIcon = (ImageView) view.findViewById(R.id.bookmark_favorite_icon);
 851                 bookmarkFavoriteIcon.setImageBitmap(favoriteIconBitmap);
 852
 853
 854                 // Get the bookmark name from the cursor and display it in `bookmarkNameTextView`.
 855                 String bookmarkNameString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 856                 TextView bookmarkNameTextView = (TextView) view.findViewById(R.id.bookmark_name);
 857                 bookmarkNameTextView.setText(bookmarkNameString);
 858
 859                 // Make the font bold for folders.
 860                 if (cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
 861                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT_BOLD);
 862                 } else {  // Reset the font to default for normal bookmarks.
 863                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT);
 864                 }
 865             }
 866         };
 867
 868         // Update the ListView.
 869         bookmarksListView.setAdapter(bookmarksCursorAdapter);
 870
 871         // Set the AppBar title.
 872         if (currentFolder.isEmpty()) {
 873             appBar.setTitle(R.string.bookmarks);
 874         } else {
 875             appBar.setTitle(currentFolder);
 876         }
 877     }
 878
 879     private void updateBookmarksListViewExcept(long[] exceptIdLongArray, String folderName) {
 880         // Get a `Cursor` with the current contents of the bookmarks database except for the specified database IDs.
 881         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksCursorExcept(exceptIdLongArray, folderName);
 882
 883         // Setup `bookmarksCursorAdapter` with `this` context.  `false` disables autoRequery.
 884         CursorAdapter bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
 885             @Override
 886             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 887                 // Inflate the individual item layout.  `false` does not attach it to the root.
 888                 return getLayoutInflater().inflate(R.layout.bookmarks_item_linearlayout, parent, false);
 889             }
 890
 891             @Override
 892             public void bindView(View view, Context context, Cursor cursor) {
 893                 // Get the favorite icon byte array from the cursor.
 894                 byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
 895
 896                 // Convert the byte array to a Bitmap beginning at the first byte and ending at the last.
 897                 Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length);
 898
 899                 // Display the bitmap in `bookmarkFavoriteIcon`.
 900                 ImageView bookmarkFavoriteIcon = (ImageView) view.findViewById(R.id.bookmark_favorite_icon);
 901                 bookmarkFavoriteIcon.setImageBitmap(favoriteIconBitmap);
 902
 903
 904                 // Get the bookmark name from the cursor and display it in `bookmarkNameTextView`.
 905                 String bookmarkNameString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
 906                 TextView bookmarkNameTextView = (TextView) view.findViewById(R.id.bookmark_name);
 907                 bookmarkNameTextView.setText(bookmarkNameString);
 908
 909                 // Make the font bold for folders.
 910                 if (cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1) {
 911                     // The first argument is `null` because we don't want to change the font.
 912                     bookmarkNameTextView.setTypeface(null, Typeface.BOLD);
 913                 } else {  // Reset the font to default.
 914                     bookmarkNameTextView.setTypeface(Typeface.DEFAULT);
 915                 }
 916             }
 917         };
 918
 919         // Update the `ListView`.
 920         bookmarksListView.setAdapter(bookmarksCursorAdapter);
 921     }
 922
 923     private void deleteBookmarkFolderContents(int databaseId) {
 924         // Get the name of the folder.
 925         String folderName = bookmarksDatabaseHelper.getFolderName(databaseId);
 926
 927         // Get the contents of the folder.
 928         Cursor folderCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(folderName);
 929
 930         for (int i = 0; i < folderCursor.getCount(); i++) {
 931             // Move `folderCursor` to the current row.
 932             folderCursor.moveToPosition(i);
 933
 934             // Get the database ID of the item.
 935             int itemDatabaseId = folderCursor.getInt(folderCursor.getColumnIndex(BookmarksDatabaseHelper._ID));
 936
 937             // If this is a folder, delete the contents first.
 938             if (bookmarksDatabaseHelper.isFolder(itemDatabaseId)) {
 939                 deleteBookmarkFolderContents(itemDatabaseId);
 940             }
 941
 942             bookmarksDatabaseHelper.deleteBookmark(itemDatabaseId);
 943         }
 944     }
 945 }