public class BookmarksDatabaseViewActivity extends AppCompatActivity implements EditBookmarkDatabaseViewDialog.EditBookmarkDatabaseViewListener,
EditBookmarkFolderDatabaseViewDialog.EditBookmarkFolderDatabaseViewListener {
- // Instantiate the constants.
+ // Define the class constants.
private static final int ALL_FOLDERS_DATABASE_ID = -2;
public static final int HOME_FOLDER_DATABASE_ID = -1;
- // `bookmarksDatabaseHelper` is used in `onCreate()`, `updateBookmarksListView()`, `selectAllBookmarksInFolder()`, and `onDestroy()`.
- private BookmarksDatabaseHelper bookmarksDatabaseHelper;
-
- // `bookmarksCursor` is used in `onCreate()`, `updateBookmarksListView()`, `onSaveBookmark()`, `onSaveBookmarkFolder()`, and `onDestroy()`.
- private Cursor bookmarksCursor;
-
- // `bookmarksCursorAdapter` is used in `onCreate()`, `selectAllBookmarksInFolder()`, and `updateBookmarksListView()`.
- private CursorAdapter bookmarksCursorAdapter;
+ // Define the saved instance state constants.
+ private final String CURRENT_FOLDER_DATABASE_ID = "current_folder_database_id";
+ private final String CURRENT_FOLDER_NAME = "current_folder_name";
+ private final String SORT_BY_DISPLAY_ORDER = "sort_by_display_order";
- // `oldFolderNameString` is used in `onCreate()` and `onSaveBookmarkFolder()`.
- private String oldFolderNameString;
-
- // `currentFolderDatabaseId` is used in `onCreate()`, `updateBookmarksListView()`, `onSaveBookmark()`, and `onSaveBookmarkFolder()`.
+ // Define the class variables.
private int currentFolderDatabaseId;
-
- // `currentFolder` is used in `onCreate()`, `onSaveBookmark()`, and `onSaveBookmarkFolder()`.
private String currentFolderName;
-
- // `sortByDisplayOrder` is used in `onCreate()`, `onOptionsItemSelected()`, and `updateBookmarksListView()`.
private boolean sortByDisplayOrder;
-
- // `bookmarksDeletedSnackbar` is used in `onCreate()`, `onOptionsItemSelected()`, and `onBackPressed()`.
+ private BookmarksDatabaseHelper bookmarksDatabaseHelper;
+ private Cursor bookmarksCursor;
+ private CursorAdapter bookmarksCursorAdapter;
+ private String oldFolderNameString;
private Snackbar bookmarksDeletedSnackbar;
-
- // `closeActivityAfterDismissingSnackbar` is used in `onCreate()`, `onOptionsItemSelected()`, and `onBackPressed()`.
private boolean closeActivityAfterDismissingSnackbar;
@Override
// Set the content view.
setContentView(R.layout.bookmarks_databaseview_coordinatorlayout);
- // The AndroidX toolbar must be used until the minimum API is >= 21.
+ // Get a handle for the toolbar.
Toolbar toolbar = findViewById(R.id.bookmarks_databaseview_toolbar);
+
+ // Set the support action bar.
setSupportActionBar(toolbar);
// Get a handle for the action bar.
// Get a cursor with the list of all the folders.
Cursor foldersCursor = bookmarksDatabaseHelper.getAllFolders();
- // Combine `matrixCursor` and `foldersCursor`.
+ // Combine the matrix cursor and the folders cursor.
MergeCursor foldersMergeCursor = new MergeCursor(new Cursor[]{matrixCursor, foldersCursor});
// Get the default folder bitmap. `ContextCompat` must be used until the minimum API >= 21.
Drawable defaultFolderDrawable = ContextCompat.getDrawable(getApplicationContext(), R.drawable.folder_blue_bitmap);
- // Cast the default folder drawable to a `BitmapDrawable`.
+ // Cast the default folder drawable to a bitmap drawable.
BitmapDrawable defaultFolderBitmapDrawable = (BitmapDrawable) defaultFolderDrawable;
// Remove the incorrect lint warning that `.getBitmap()` might be null.
assert defaultFolderBitmapDrawable != null;
- // Convert the default folder `BitmapDrawable` to a bitmap.
+ // Convert the default folder bitmap drawable to a bitmap.
Bitmap defaultFolderBitmap = defaultFolderBitmapDrawable.getBitmap();
Spinner folderSpinner = findViewById(R.id.spinner);
folderSpinner.setAdapter(foldersCursorAdapter);
- // Handle taps on the spinner dropdown.
- folderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
- @Override
- public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
- // Store the current folder database ID.
- currentFolderDatabaseId = (int) id;
+ // Wait to set the on item selected listener until the spinner has been inflated. Otherwise the activity will crash on restart.
+ folderSpinner.post(() -> {
+ // Handle taps on the spinner dropdown.
+ folderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+ @Override
+ public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+ // Store the current folder database ID.
+ currentFolderDatabaseId = (int) id;
- // Get a handle for the selected view.
- TextView selectedFolderTextView = findViewById(R.id.spinner_item_textview);
+ // Get a handle for the selected view.
+ TextView selectedFolderTextView = findViewById(R.id.spinner_item_textview);
- // Store the current folder name.
- currentFolderName = selectedFolderTextView.getText().toString();
+ // Store the current folder name.
+ currentFolderName = selectedFolderTextView.getText().toString();
- // Update the list view.
- updateBookmarksListView();
- }
+ // Update the list view.
+ updateBookmarksListView();
+ }
- @Override
- public void onNothingSelected(AdapterView<?> parent) {
- // Do nothing.
- }
+ @Override
+ public void onNothingSelected(AdapterView<?> parent) {
+ // Do nothing.
+ }
+ });
});
- // Get a handle for the bookmarks `ListView`.
+
+ // Get a handle for the bookmarks listview.
ListView bookmarksListView = findViewById(R.id.bookmarks_databaseview_listview);
- // Get a `Cursor` with the current contents of the bookmarks database.
- bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
+ // Check to see if the activity was restarted.
+ if (savedInstanceState == null) { // The activity was not restarted.
+ // Set the default current folder database ID.
+ currentFolderDatabaseId = ALL_FOLDERS_DATABASE_ID;
+ } else { // The activity was restarted.
+ // Restore the class variables from the saved instance state.
+ currentFolderDatabaseId = savedInstanceState.getInt(CURRENT_FOLDER_DATABASE_ID);
+ currentFolderName = savedInstanceState.getString(CURRENT_FOLDER_NAME);
+ sortByDisplayOrder = savedInstanceState.getBoolean(SORT_BY_DISPLAY_ORDER);
+
+ // Update the spinner if the home folder is selected. Android handles this by default for the main cursor but not the matrix cursor.
+ if (currentFolderDatabaseId == HOME_FOLDER_DATABASE_ID) {
+ folderSpinner.setSelection(1);
+ }
+ }
+
+ // Update the bookmarks listview.
+ updateBookmarksListView();
// Setup a `CursorAdapter` with `this` context. `false` disables autoRequery.
bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
// Update the ListView.
bookmarksListView.setAdapter(bookmarksCursorAdapter);
- // Set the current folder database ID.
- currentFolderDatabaseId = ALL_FOLDERS_DATABASE_ID;
-
// Set a listener to edit a bookmark when it is tapped.
bookmarksListView.setOnItemClickListener((AdapterView<?> parent, View view, int position, long id) -> {
// Convert the database ID to an int.
// Disable the delete menu item if a delete is pending.
deleteMenuItem.setEnabled(!deletingBookmarks);
+ // Get the number of currently selected bookmarks.
+ int numberOfSelectedBookmarks = bookmarksListView.getCheckedItemCount();
+
+ // Set the action mode subtitle according to the number of selected bookmarks. This must be set here or it will be missing if the activity is restarted.
+ mode.setSubtitle(getString(R.string.selected) + " " + numberOfSelectedBookmarks);
+
+ // Do not show the select all menu item if all the bookmarks are already checked.
+ if (bookmarksListView.getCheckedItemCount() == bookmarksListView.getCount()) {
+ selectAllMenuItem.setVisible(false);
+ }
+
// Make it so.
return true;
}
// Calculate the number of selected bookmarks.
int numberOfSelectedBookmarks = bookmarksListView.getCheckedItemCount();
- // Adjust the ActionMode according to the number of selected bookmarks.
+ // Update the action mode subtitle according to the number of selected bookmarks.
mode.setSubtitle(getString(R.string.selected) + " " + numberOfSelectedBookmarks);
- // Do not show the select all menu item if all the bookmarks are already checked.
- if (bookmarksListView.getCheckedItemCount() == bookmarksListView.getCount()) {
+ // Update the visibility of the the select all menu.
+ if (bookmarksListView.getCheckedItemCount() == bookmarksListView.getCount()) { // All of the bookmarks are checked.
+ // Hide the select all menu item.
selectAllMenuItem.setVisible(false);
- } else {
+ } else { // Not all of the bookmarks are checked.
+ // Show the select all menu item.
selectAllMenuItem.setVisible(true);
}
// Inflate the menu.
getMenuInflater().inflate(R.menu.bookmarks_databaseview_options_menu, menu);
+ // Get the current theme status.
+ int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+ // Get a handle for the sort menu item.
+ MenuItem sortMenuItem = menu.findItem(R.id.sort);
+
+ // Change the sort menu item icon if the listview is sorted by display order, which restores the state after a restart.
+ if (sortByDisplayOrder) {
+ if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
+ sortMenuItem.setIcon(R.drawable.sort_selected_day);
+ } else {
+ sortMenuItem.setIcon(R.drawable.sort_selected_night);
+ }
+ }
+
// Success.
return true;
}
onBackPressed();
break;
- case R.id.options_menu_sort:
+ case R.id.sort:
// Update the sort by display order tracker.
sortByDisplayOrder = !sortByDisplayOrder;
// Update the icon and display a snackbar.
if (sortByDisplayOrder) { // Sort by display order.
// Update the icon according to the theme.
- if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) {
- menuItem.setIcon(R.drawable.sort_selected_night);
- } else {
+ if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
menuItem.setIcon(R.drawable.sort_selected_day);
+ } else {
+ menuItem.setIcon(R.drawable.sort_selected_night);
}
// Display a Snackbar indicating the current sort type.
Snackbar.make(bookmarksListView, R.string.sorted_by_display_order, Snackbar.LENGTH_SHORT).show();
} else { // Sort by database id.
// Update the icon according to the theme.
- if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) {
- menuItem.setIcon(R.drawable.sort_night);
- } else {
+ if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
menuItem.setIcon(R.drawable.sort_day);
+ } else {
+ menuItem.setIcon(R.drawable.sort_night);
}
// Display a Snackbar indicating the current sort type.
return true;
}
+ @Override
+ public void onSaveInstanceState (@NonNull Bundle savedInstanceState) {
+ // Run the default commands.
+ super.onSaveInstanceState(savedInstanceState);
+
+ // Store the class variables in the bundle.
+ savedInstanceState.putInt(CURRENT_FOLDER_DATABASE_ID, currentFolderDatabaseId);
+ savedInstanceState.putString(CURRENT_FOLDER_NAME, currentFolderName);
+ savedInstanceState.putBoolean(SORT_BY_DISPLAY_ORDER, sortByDisplayOrder);
+ }
+
@Override
public void onBackPressed() {
// Check to see if a snackbar is currently displayed. If so, it must be closed before existing so that a pending delete is completed before reloading the list view in the bookmarks activity.
}
}
- // Update the list view.
- bookmarksCursorAdapter.changeCursor(bookmarksCursor);
+ // Update the cursor adapter if it isn't null, which happens when the activity is restarted.
+ if (bookmarksCursorAdapter != null) {
+ bookmarksCursorAdapter.changeCursor(bookmarksCursor);
+ }
}
private void selectAllBookmarksInFolder(int folderId) {
projects / PrivacyBrowserAndroid.git / blobdiff