2 * Copyright © 2016-2019 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.content.SharedPreferences;
28 import android.database.Cursor;
29 import android.database.DatabaseUtils;
30 import android.database.MatrixCursor;
31 import android.database.MergeCursor;
32 import android.graphics.Bitmap;
33 import android.graphics.BitmapFactory;
34 import android.graphics.drawable.BitmapDrawable;
35 import android.graphics.drawable.Drawable;
36 import android.os.Bundle;
37 import android.preference.PreferenceManager;
38 import android.view.View;
39 import android.view.ViewGroup;
40 import android.view.WindowManager;
41 import android.widget.AdapterView;
42 import android.widget.Button;
43 import android.widget.CursorAdapter;
44 import android.widget.ImageView;
45 import android.widget.ListView;
46 import android.widget.TextView;
48 import androidx.annotation.NonNull;
49 import androidx.core.content.ContextCompat;
50 import androidx.fragment.app.DialogFragment; // The AndroidX dialog fragment must be used or an error is produced on API <= 22.
52 import com.stoutner.privacybrowser.R;
53 import com.stoutner.privacybrowser.activities.BookmarksActivity;
54 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
56 import java.io.ByteArrayOutputStream;
58 public class MoveToFolderDialog extends DialogFragment {
59 // Instantiate the class variables.
60 private MoveToFolderListener moveToFolderListener;
61 private BookmarksDatabaseHelper bookmarksDatabaseHelper;
62 private StringBuilder exceptFolders;
64 // The public interface is used to send information back to the parent activity.
65 public interface MoveToFolderListener {
66 void onMoveToFolder(DialogFragment dialogFragment);
69 public void onAttach(Context context) {
70 // Run the default commands.
71 super.onAttach(context);
73 // Get a handle for `MoveToFolderListener` from the launching context.
74 moveToFolderListener = (MoveToFolderListener) context;
77 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
78 @SuppressLint("InflateParams")
81 public Dialog onCreateDialog(Bundle savedInstanceState) {
82 // Initialize the database helper. The `0` specifies a database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
83 bookmarksDatabaseHelper = new BookmarksDatabaseHelper(getContext(), null, null, 0);
85 // Use an alert dialog builder to create the alert dialog.
86 AlertDialog.Builder dialogBuilder;
88 // Get a handle for the shared preferences.
89 SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getContext());
91 // Get the screenshot and theme preferences.
92 boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
93 boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false);
95 // Set the style according to the theme.
97 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
99 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
103 dialogBuilder.setTitle(R.string.move_to_folder);
105 // Remove the incorrect lint warning that `getActivity()` might be null.
106 assert getActivity() != null;
108 // Set the view. The parent view is `null` because it will be assigned by `AlertDialog`.
109 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.move_to_folder_dialog, null));
111 // Set the listener for the negative button.
112 dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
113 // Do nothing. The `AlertDialog` will close automatically.
116 // Set the listener fo the positive button.
117 dialogBuilder.setPositiveButton(R.string.move, (DialogInterface dialog, int which) -> {
118 // Return the `DialogFragment` to the parent activity on save.
119 moveToFolderListener.onMoveToFolder(MoveToFolderDialog.this);
122 // Create an alert dialog from the alert dialog builder.
123 final AlertDialog alertDialog = dialogBuilder.create();
125 // Disable screenshots if not allowed.
126 if (!allowScreenshots) {
127 // Remove the warning below that `getWindow()` might be null.
128 assert alertDialog.getWindow() != null;
130 // Disable screenshots.
131 alertDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
134 // Show the alert dialog so the items in the layout can be modified.
137 // Get a handle for the positive button.
138 final Button moveButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
140 // Initially disable the positive button.
141 moveButton.setEnabled(false);
143 // Initialize the variables.
144 Cursor foldersCursor;
145 CursorAdapter foldersCursorAdapter;
146 exceptFolders = new StringBuilder();
148 // Check to see if we are in the `Home Folder`.
149 if (BookmarksActivity.currentFolder.isEmpty()) { // Don't display `Home Folder` at the top of the `ListView`.
150 // If a folder is selected, add it and all children to the list of folders not to display.
151 long[] selectedBookmarksLongArray = BookmarksActivity.checkedItemIds;
152 for (long databaseIdLong : selectedBookmarksLongArray) {
153 // Get `databaseIdInt` for each selected bookmark.
154 int databaseIdInt = (int) databaseIdLong;
156 // If `databaseIdInt` is a folder.
157 if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
158 // Get the name of the selected folder.
159 String folderName = bookmarksDatabaseHelper.getFolderName(databaseIdInt);
161 // Populate the list of folders not to get.
162 if (exceptFolders.toString().isEmpty()){
163 // Add the selected folder to the list of folders not to display.
164 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName));
166 // Add the selected folder to the end of the list of folders not to display.
167 exceptFolders.append(",");
168 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName));
171 // Add the selected folder's subfolders to the list of folders not to display.
172 addSubfoldersToExceptFolders(folderName);
176 // Get a cursor containing the folders to display.
177 foldersCursor = bookmarksDatabaseHelper.getFoldersExcept(exceptFolders.toString());
179 // Setup `foldersCursorAdaptor` with `this` context. `false` disables autoRequery.
180 foldersCursorAdapter = new CursorAdapter(alertDialog.getContext(), foldersCursor, false) {
182 public View newView(Context context, Cursor cursor, ViewGroup parent) {
183 // Remove the incorrect lint warning that `.getLayoutInflater()` might be false.
184 assert getActivity() != null;
186 // Inflate the individual item layout. `false` does not attach it to the root.
187 return getActivity().getLayoutInflater().inflate(R.layout.move_to_folder_item_linearlayout, parent, false);
191 public void bindView(View view, Context context, Cursor cursor) {
192 // Get the folder icon from `cursor`.
193 byte[] folderIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
194 // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
195 Bitmap folderIconBitmap = BitmapFactory.decodeByteArray(folderIconByteArray, 0, folderIconByteArray.length);
196 // Display `folderIconBitmap` in `move_to_folder_icon`.
197 ImageView folderIconImageView = view.findViewById(R.id.move_to_folder_icon);
198 folderIconImageView.setImageBitmap(folderIconBitmap);
200 // Get the folder name from `cursor` and display it in `move_to_folder_name_textview`.
201 String folderName = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
202 TextView folderNameTextView = view.findViewById(R.id.move_to_folder_name_textview);
203 folderNameTextView.setText(folderName);
206 } else { // Display `Home Folder` at the top of the `ListView`.
207 // Get the home folder icon drawable and convert it to a `Bitmap`.
208 Drawable homeFolderIconDrawable = ContextCompat.getDrawable(getActivity().getApplicationContext(), R.drawable.folder_gray_bitmap);
209 BitmapDrawable homeFolderIconBitmapDrawable = (BitmapDrawable) homeFolderIconDrawable;
210 assert homeFolderIconDrawable != null;
211 Bitmap homeFolderIconBitmap = homeFolderIconBitmapDrawable.getBitmap();
213 // Convert the folder `Bitmap` to a byte array. `0` is for lossless compression (the only option for a PNG).
214 ByteArrayOutputStream homeFolderIconByteArrayOutputStream = new ByteArrayOutputStream();
215 homeFolderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, homeFolderIconByteArrayOutputStream);
216 byte[] homeFolderIconByteArray = homeFolderIconByteArrayOutputStream.toByteArray();
218 // Setup a `MatrixCursor` for the `Home Folder`.
219 String[] homeFolderMatrixCursorColumnNames = {BookmarksDatabaseHelper._ID, BookmarksDatabaseHelper.BOOKMARK_NAME, BookmarksDatabaseHelper.FAVORITE_ICON};
220 MatrixCursor homeFolderMatrixCursor = new MatrixCursor(homeFolderMatrixCursorColumnNames);
221 homeFolderMatrixCursor.addRow(new Object[]{0, getString(R.string.home_folder), homeFolderIconByteArray});
223 // Add the parent folder to the list of folders not to display.
224 exceptFolders.append(DatabaseUtils.sqlEscapeString(BookmarksActivity.currentFolder));
226 // If a folder is selected, add it and all children to the list of folders not to display.
227 long[] selectedBookmarksLongArray = BookmarksActivity.checkedItemIds;
228 for (long databaseIdLong : selectedBookmarksLongArray) {
229 // Get `databaseIdInt` for each selected bookmark.
230 int databaseIdInt = (int) databaseIdLong;
232 // If `databaseIdInt` is a folder.
233 if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
234 // Get the name of the selected folder.
235 String folderName = bookmarksDatabaseHelper.getFolderName(databaseIdInt);
237 // Add the selected folder to the end of the list of folders not to display.
238 exceptFolders.append(",");
239 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName));
241 // Add the selected folder's subfolders to the list of folders not to display.
242 addSubfoldersToExceptFolders(folderName);
246 // Get a `Cursor` containing the folders to display.
247 foldersCursor = bookmarksDatabaseHelper.getFoldersExcept(exceptFolders.toString());
249 // Combine `homeFolderMatrixCursor` and `foldersCursor`.
250 MergeCursor foldersMergeCursor = new MergeCursor(new Cursor[]{homeFolderMatrixCursor, foldersCursor});
252 // Setup `foldersCursorAdaptor`. `false` disables autoRequery.
253 foldersCursorAdapter = new CursorAdapter(alertDialog.getContext(), foldersMergeCursor, false) {
255 public View newView(Context context, Cursor cursor, ViewGroup parent) {
256 // Remove the incorrect lint warning that `.getLayoutInflater()` might be false.
257 assert getActivity() != null;
259 // Inflate the individual item layout. `false` does not attach it to the root.
260 return getActivity().getLayoutInflater().inflate(R.layout.move_to_folder_item_linearlayout, parent, false);
264 public void bindView(View view, Context context, Cursor cursor) {
265 // Get the folder icon from `cursor`.
266 byte[] folderIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
267 // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
268 Bitmap folderIconBitmap = BitmapFactory.decodeByteArray(folderIconByteArray, 0, folderIconByteArray.length);
269 // Display `folderIconBitmap` in `move_to_folder_icon`.
270 ImageView folderIconImageView = view.findViewById(R.id.move_to_folder_icon);
271 folderIconImageView.setImageBitmap(folderIconBitmap);
273 // Get the folder name from `cursor` and display it in `move_to_folder_name_textview`.
274 String folderName = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
275 TextView folderNameTextView = view.findViewById(R.id.move_to_folder_name_textview);
276 folderNameTextView.setText(folderName);
281 // Display the ListView
282 ListView foldersListView = alertDialog.findViewById(R.id.move_to_folder_listview);
283 foldersListView.setAdapter(foldersCursorAdapter);
285 // Enable the move button when a folder is selected.
286 foldersListView.setOnItemClickListener((AdapterView<?> parent, View view, int position, long id) -> {
287 // Enable the move button.
288 moveButton.setEnabled(true);
291 // `onCreateDialog` requires the return of an `AlertDialog`.
295 private void addSubfoldersToExceptFolders(String folderName) {
296 // Get a `Cursor` will all the immediate subfolders.
297 Cursor subfoldersCursor = bookmarksDatabaseHelper.getSubfolders(folderName);
299 for (int i = 0; i < subfoldersCursor.getCount(); i++) {
300 // Move `subfolderCursor` to the current item.
301 subfoldersCursor.moveToPosition(i);
303 // Get the name of the subfolder.
304 String subfolderName = subfoldersCursor.getString(subfoldersCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
306 // Add the subfolder to `exceptFolders`.
307 exceptFolders.append(",");
308 exceptFolders.append(DatabaseUtils.sqlEscapeString(subfolderName));
310 // Run the same tasks for any subfolders of the subfolder.
311 addSubfoldersToExceptFolders(subfolderName);