2 * Copyright © 2016-2017 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
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.
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.
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/>.
20 package com.stoutner.privacybrowser.dialogs;
22 import android.annotation.SuppressLint;
23 import android.app.AlertDialog;
24 import android.app.Dialog;
25 import android.content.Context;
26 import android.content.DialogInterface;
27 import android.database.Cursor;
28 import android.database.DatabaseUtils;
29 import android.database.MatrixCursor;
30 import android.database.MergeCursor;
31 import android.graphics.Bitmap;
32 import android.graphics.BitmapFactory;
33 import android.os.Bundle;
34 import android.support.annotation.NonNull;
35 import android.support.v4.widget.ResourceCursorAdapter;
36 // `AppCompatDialogFragment` is required instead of `DialogFragment` or an error is produced on API <=22.
37 import android.support.v7.app.AppCompatDialogFragment;
38 import android.text.Editable;
39 import android.text.TextWatcher;
40 import android.view.KeyEvent;
41 import android.view.View;
42 import android.view.WindowManager;
43 import android.widget.AdapterView;
44 import android.widget.Button;
45 import android.widget.EditText;
46 import android.widget.ImageView;
47 import android.widget.RadioButton;
48 import android.widget.RadioGroup;
49 import android.widget.Spinner;
50 import android.widget.TextView;
52 import com.stoutner.privacybrowser.R;
53 import com.stoutner.privacybrowser.activities.MainWebViewActivity;
54 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
56 public class EditBookmarkFolderDatabaseViewDialog extends AppCompatDialogFragment {
57 // Instantiate the constants.
58 public static final int HOME_FOLDER_DATABASE_ID = -1;
60 // Instantiate the class variables.
61 private EditBookmarkFolderDatabaseViewListener editBookmarkFolderDatabaseViewListener;
62 private BookmarksDatabaseHelper bookmarksDatabaseHelper;
63 private int folderDatabaseId;
64 private StringBuilder exceptFolders;
65 private String currentFolderName;
66 private int currentParentFolderDatabaseId;
67 private String currentDisplayOrder;
68 private RadioButton currentIconRadioButton;
69 private EditText nameEditText;
70 private Spinner folderSpinner;
71 private EditText displayOrderEditText;
72 private Button editButton;
74 // The public interface is used to send information back to the parent activity.
75 public interface EditBookmarkFolderDatabaseViewListener {
76 void onSaveBookmarkFolder(AppCompatDialogFragment dialogFragment, int selectedFolderDatabaseId);
79 public void onAttach(Context context) {
80 // Run the default commands.
81 super.onAttach(context);
83 // Get a handle for `EditBookmarkDatabaseViewListener` from `context`.
85 editBookmarkFolderDatabaseViewListener = (EditBookmarkFolderDatabaseViewListener) context;
86 } catch(ClassCastException exception) {
87 throw new ClassCastException(context.toString() + " must implement EditBookmarkFolderDatabaseViewListener.");
91 // Store the database ID in the arguments bundle.
92 public static EditBookmarkFolderDatabaseViewDialog folderDatabaseId(int databaseId) {
94 Bundle bundle = new Bundle();
96 // Store the bookmark database ID in the bundle.
97 bundle.putInt("Database ID", databaseId);
99 // Add the bundle to the dialog.
100 EditBookmarkFolderDatabaseViewDialog editBookmarkFolderDatabaseViewDialog = new EditBookmarkFolderDatabaseViewDialog();
101 editBookmarkFolderDatabaseViewDialog.setArguments(bundle);
103 // Return the new dialog.
104 return editBookmarkFolderDatabaseViewDialog;
108 public void onCreate(Bundle savedInstanceState) {
109 // Run the default commands.
110 super.onCreate(savedInstanceState);
112 // Store the bookmark database ID in the class variable.
113 folderDatabaseId = getArguments().getInt("Database ID");
116 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
117 @SuppressLint("InflateParams")
120 public Dialog onCreateDialog(Bundle savedInstanceState) {
121 // Initialize the database helper. The two `nulls` do not specify the database name or a `CursorFactory`. The `0` specifies a database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
122 bookmarksDatabaseHelper = new BookmarksDatabaseHelper(getContext(), null, null, 0);
124 // Get a `Cursor` with the selected bookmark and move it to the first position.
125 Cursor folderCursor = bookmarksDatabaseHelper.getBookmarkCursor(folderDatabaseId);
126 folderCursor.moveToFirst();
128 // Use `AlertDialog.Builder` to create the `AlertDialog`.
129 AlertDialog.Builder dialogBuilder;
131 // Set the style according to the theme.
132 if (MainWebViewActivity.darkTheme) {
133 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
135 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
139 dialogBuilder.setTitle(R.string.edit_folder);
141 // Set the view. The parent view is `null` because it will be assigned by `AlertDialog`.
142 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.edit_bookmark_folder_databaseview_dialog, null));
144 // Set an `onClick()` listener for the negative button.
145 dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
146 // Do nothing. The `AlertDialog` will close automatically.
149 // Set the `onClick()` listener fo the positive button.
150 dialogBuilder.setPositiveButton(R.string.save, (DialogInterface dialog, int which) -> {
151 // Return the `DialogFragment` to the parent activity on save.
152 editBookmarkFolderDatabaseViewListener.onSaveBookmarkFolder(EditBookmarkFolderDatabaseViewDialog.this, folderDatabaseId);
155 // Create an `AlertDialog` from the `AlertDialog.Builder`.
156 final AlertDialog alertDialog = dialogBuilder.create();
158 // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`.
159 assert alertDialog.getWindow() != null;
161 // Set the keyboard to be hidden when the `AlertDialog` is first shown. If this is not set, the `AlertDialog` will not shrink when the keyboard is displayed.
162 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
164 // The `AlertDialog` must be shown before items in the layout can be modified.
167 // Get handles for the layout items.
168 TextView databaseIdTextView = alertDialog.findViewById(R.id.edit_folder_database_id_textview);
169 RadioGroup iconRadioGroup = alertDialog.findViewById(R.id.edit_folder_icon_radiogroup);
170 ImageView currentIconImageView = alertDialog.findViewById(R.id.edit_folder_current_icon_imageview);
171 ImageView newFavoriteIconImageView = alertDialog.findViewById(R.id.edit_folder_webpage_favorite_icon_imageview);
172 currentIconRadioButton = alertDialog.findViewById(R.id.edit_folder_current_icon_radiobutton);
173 nameEditText = alertDialog.findViewById(R.id.edit_folder_name_edittext);
174 folderSpinner = alertDialog.findViewById(R.id.edit_folder_parent_folder_spinner);
175 displayOrderEditText = alertDialog.findViewById(R.id.edit_folder_display_order_edittext);
176 editButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
178 // Store the current folder values.
179 currentFolderName = folderCursor.getString(folderCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
180 currentDisplayOrder = folderCursor.getString(folderCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER));
181 String parentFolder = folderCursor.getString(folderCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER));
183 // Set the database ID.
184 databaseIdTextView.setText(String.valueOf(folderCursor.getInt(folderCursor.getColumnIndex(BookmarksDatabaseHelper._ID))));
186 // Get the current favorite icon byte array from the `Cursor`.
187 byte[] currentIconByteArray = folderCursor.getBlob(folderCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
189 // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
190 Bitmap currentIconBitmap = BitmapFactory.decodeByteArray(currentIconByteArray, 0, currentIconByteArray.length);
192 // Display `currentIconBitmap` in `edit_bookmark_current_icon`.
193 currentIconImageView.setImageBitmap(currentIconBitmap);
195 // Get a `Bitmap` of the favorite icon from `MainWebViewActivity` and display it in `edit_bookmark_web_page_favorite_icon`.
196 newFavoriteIconImageView.setImageBitmap(MainWebViewActivity.favoriteIconBitmap);
198 // Populate the folder name `EditText`.
199 nameEditText.setText(currentFolderName);
201 // Setup a `MatrixCursor` "Home Folder".
202 String[] matrixCursorColumnNames = {BookmarksDatabaseHelper._ID, BookmarksDatabaseHelper.BOOKMARK_NAME};
203 MatrixCursor matrixCursor = new MatrixCursor(matrixCursorColumnNames);
204 matrixCursor.addRow(new Object[]{HOME_FOLDER_DATABASE_ID, getString(R.string.home_folder)});
206 // Initialize a `StringBuilder` to track the folders not to display in the `Spinner` and populate it with the current folder.
207 exceptFolders = new StringBuilder(DatabaseUtils.sqlEscapeString(currentFolderName));
209 // Add all subfolders of the current folder to the list of folders not to display.
210 addSubfoldersToExceptFolders(currentFolderName);
212 // Get a `Cursor` with the list of all the folders.
213 Cursor foldersCursor = bookmarksDatabaseHelper.getFoldersCursorExcept(exceptFolders.toString());
215 // Combine `matrixCursor` and `foldersCursor`.
216 MergeCursor foldersMergeCursor = new MergeCursor(new Cursor[]{matrixCursor, foldersCursor});
218 // Create a `ResourceCursorAdapter` for the `Spinner`. `0` specifies no flags.;
219 ResourceCursorAdapter foldersCursorAdapter = new ResourceCursorAdapter(getContext(), R.layout.edit_bookmark_databaseview_spinner_item, foldersMergeCursor, 0) {
221 public void bindView(View view, Context context, Cursor cursor) {
222 // Get a handle for the `Spinner` item `TextView`.
223 TextView spinnerItemTextView = view.findViewById(R.id.spinner_item_textview);
225 // Set the `TextView` to display the folder name.
226 spinnerItemTextView.setText(cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
230 // Set the `ResourceCursorAdapter` drop drown view resource.
231 foldersCursorAdapter.setDropDownViewResource(R.layout.edit_bookmark_databaseview_spinner_dropdown_item);
233 // Set the adapter for the folder `Spinner`.
234 folderSpinner.setAdapter(foldersCursorAdapter);
236 // Select the current folder in the `Spinner` if the bookmark isn't in the "Home Folder".
237 if (!parentFolder.equals("")) {
238 // Get the database ID of the parent folder.
239 int folderDatabaseId = bookmarksDatabaseHelper.getFolderDatabaseId(folderCursor.getString(folderCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
241 // Initialize `parentFolderPosition` and the iteration variable.
242 int parentFolderPosition = 0;
245 // Find the parent folder position in folders `ResourceCursorAdapter`.
247 if (foldersCursorAdapter.getItemId(i) == folderDatabaseId) {
248 // Store the current position for the parent folder.
249 parentFolderPosition = i;
251 // Try the next entry.
254 // Stop when the parent folder position is found or all the items in the `ResourceCursorAdapter` have been checked.
255 } while ((parentFolderPosition == 0) && (i < foldersCursorAdapter.getCount()));
257 // Select the parent folder in the `Spinner`.
258 folderSpinner.setSelection(parentFolderPosition);
261 // Store the current folder database ID.
262 currentParentFolderDatabaseId = (int) folderSpinner.getSelectedItemId();
264 // Populate the display order `EditText`.
265 displayOrderEditText.setText(String.valueOf(folderCursor.getInt(folderCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER))));
267 // Initially disable the edit button.
268 editButton.setEnabled(false);
270 // Update the edit button if the icon selection changes.
271 iconRadioGroup.setOnCheckedChangeListener((group, checkedId) -> {
272 // Update the edit button.
276 // Update the edit button if the bookmark name changes.
277 nameEditText.addTextChangedListener(new TextWatcher() {
279 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
284 public void onTextChanged(CharSequence s, int start, int before, int count) {
289 public void afterTextChanged(Editable s) {
290 // Update the edit button.
295 // Update the edit button if the folder changes.
296 folderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
298 public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
299 // Update the edit button.
304 public void onNothingSelected(AdapterView<?> parent) {
309 // Update the edit button if the display order changes.
310 displayOrderEditText.addTextChangedListener(new TextWatcher() {
312 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
317 public void onTextChanged(CharSequence s, int start, int before, int count) {
322 public void afterTextChanged(Editable s) {
323 // Update the edit button.
328 // Allow the `enter` key on the keyboard to save the bookmark from the bookmark name `EditText`.
329 nameEditText.setOnKeyListener((View v, int keyCode, KeyEvent event) -> {
330 // Save the bookmark if the event is a key-down on the "enter" button.
331 if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER) && editButton.isEnabled()) { // The enter key was pressed and the edit button is enabled.
332 // Trigger the `Listener` and return the `DialogFragment` to the parent activity.
333 editBookmarkFolderDatabaseViewListener.onSaveBookmarkFolder(EditBookmarkFolderDatabaseViewDialog.this, folderDatabaseId);
335 // Manually dismiss `alertDialog`.
336 alertDialog.dismiss();
338 // Consume the event.
340 } else { // If any other key was pressed, or if the edit button is currently disabled, do not consume the event.
345 // Allow the "enter" key on the keyboard to save the bookmark from the display order `EditText`.
346 displayOrderEditText.setOnKeyListener((View v, int keyCode, KeyEvent event) -> {
347 // Save the bookmark if the event is a key-down on the "enter" button.
348 if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER) && editButton.isEnabled()) { // The enter key was pressed and the edit button is enabled.
349 // Trigger the `Listener` and return the `DialogFragment` to the parent activity.
350 editBookmarkFolderDatabaseViewListener.onSaveBookmarkFolder(EditBookmarkFolderDatabaseViewDialog.this, folderDatabaseId);
352 // Manually dismiss the `AlertDialog`.
353 alertDialog.dismiss();
355 // Consume the event.
357 } else { // If any other key was pressed, or if the edit button is currently disabled, do not consume the event.
362 // `onCreateDialog` requires the return of an `AlertDialog`.
366 private void updateEditButton() {
367 // Get the values from the dialog.
368 String newFolderName = nameEditText.getText().toString();
369 int newParentFolderDatabaseId = (int) folderSpinner.getSelectedItemId();
370 String newDisplayOrder = displayOrderEditText.getText().toString();
372 // Get a cursor for the new folder name if it exists.
373 Cursor folderExistsCursor = bookmarksDatabaseHelper.getFolderCursor(newFolderName);
375 // Is the new folder name empty?
376 boolean folderNameNotEmpty = !newFolderName.isEmpty();
378 // Does the folder name already exist?
379 boolean folderNameAlreadyExists = (!newFolderName.equals(currentFolderName) && (folderExistsCursor.getCount() > 0));
381 // Has the favorite icon changed?
382 boolean iconChanged = !currentIconRadioButton.isChecked();
384 // Has the name been renamed?
385 boolean folderRenamed = (!newFolderName.equals(currentFolderName) && !folderNameAlreadyExists);
387 // Has the folder changed?
388 boolean parentFolderChanged = newParentFolderDatabaseId != currentParentFolderDatabaseId;
390 // Has the display order changed?
391 boolean displayOrderChanged = !newDisplayOrder.equals(currentDisplayOrder);
393 // Is the display order empty?
394 boolean displayOrderNotEmpty = !newDisplayOrder.isEmpty();
396 // Update the enabled status of the edit button.
397 editButton.setEnabled((iconChanged || folderRenamed || parentFolderChanged || displayOrderChanged) && folderNameNotEmpty && displayOrderNotEmpty);
400 private void addSubfoldersToExceptFolders(String folderName) {
401 // Get a `Cursor` will all the immediate subfolders.
402 Cursor subfoldersCursor = bookmarksDatabaseHelper.getSubfoldersCursor(folderName);
404 for (int i = 0; i < subfoldersCursor.getCount(); i++) {
405 // Move `subfolderCursor` to the current item.
406 subfoldersCursor.moveToPosition(i);
408 // Get the name of the subfolder.
409 String subfolderName = subfoldersCursor.getString(subfoldersCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
411 // Add the subfolder to `exceptFolders`.
412 exceptFolders.append(",");
413 exceptFolders.append(DatabaseUtils.sqlEscapeString(subfolderName));
415 // Run the same tasks for any subfolders of the subfolder.
416 addSubfoldersToExceptFolders(subfolderName);