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