app/src/main/java/com/stoutner/privacybrowser/BookmarksActivity.java

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