2 * Copyright 2016-2023 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
6 * Privacy Browser Android 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 Android 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 Android. If not, see <http://www.gnu.org/licenses/>.
20 package com.stoutner.privacybrowser.dialogs
22 import android.app.Dialog
23 import android.content.Context
24 import android.content.DialogInterface
25 import android.database.Cursor
26 import android.database.DatabaseUtils
27 import android.database.MatrixCursor
28 import android.database.MergeCursor
29 import android.graphics.Bitmap
30 import android.graphics.BitmapFactory
31 import android.graphics.drawable.BitmapDrawable
32 import android.os.Bundle
33 import android.view.View
34 import android.view.ViewGroup
35 import android.view.WindowManager
36 import android.widget.AdapterView
37 import android.widget.AdapterView.OnItemClickListener
38 import android.widget.ImageView
39 import android.widget.ListView
40 import android.widget.TextView
42 import androidx.appcompat.app.AlertDialog
43 import androidx.core.content.ContextCompat
44 import androidx.cursoradapter.widget.CursorAdapter
45 import androidx.fragment.app.DialogFragment
46 import androidx.preference.PreferenceManager
48 import com.stoutner.privacybrowser.R
49 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper
51 import kotlinx.coroutines.CoroutineScope
52 import kotlinx.coroutines.Dispatchers
53 import kotlinx.coroutines.launch
54 import kotlinx.coroutines.withContext
56 import java.io.ByteArrayOutputStream
57 import java.lang.StringBuilder
59 // Define the class constants.
60 private const val CURRENT_FOLDER = "current_folder"
61 private const val SELECTED_BOOKMARKS_LONG_ARRAY = "selected_bookmarks_long_array"
63 class MoveToFolderDialog : DialogFragment() {
65 fun moveBookmarks(currentFolder: String, selectedBookmarksLongArray: LongArray): MoveToFolderDialog {
66 // Create an arguments bundle.
67 val argumentsBundle = Bundle()
69 // Store the arguments in the bundle.
70 argumentsBundle.putString(CURRENT_FOLDER, currentFolder)
71 argumentsBundle.putLongArray(SELECTED_BOOKMARKS_LONG_ARRAY, selectedBookmarksLongArray)
73 // Create a new instance of the dialog.
74 val moveToFolderDialog = MoveToFolderDialog()
76 // And the bundle to the dialog.
77 moveToFolderDialog.arguments = argumentsBundle
79 // Return the new dialog.
80 return moveToFolderDialog
84 // Declare the class variables.
85 private lateinit var moveToFolderListener: MoveToFolderListener
86 private lateinit var bookmarksDatabaseHelper: BookmarksDatabaseHelper
87 private lateinit var exceptFolders: StringBuilder
89 // The public interface is used to send information back to the parent activity.
90 interface MoveToFolderListener {
91 fun onMoveToFolder(dialogFragment: DialogFragment)
94 override fun onAttach(context: Context) {
95 // Run the default commands.
96 super.onAttach(context)
98 // Get a handle for the move to folder listener from the launching context.
99 moveToFolderListener = context as MoveToFolderListener
102 override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
103 // Get the data from the arguments.
104 val currentFolder = requireArguments().getString(CURRENT_FOLDER)!!
105 val selectedBookmarksLongArray = requireArguments().getLongArray(SELECTED_BOOKMARKS_LONG_ARRAY)!!
107 // Initialize the database helper.
108 bookmarksDatabaseHelper = BookmarksDatabaseHelper(requireContext())
110 // Use an alert dialog builder to create the alert dialog.
111 val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
114 dialogBuilder.setIcon(R.drawable.move_to_folder_blue)
117 dialogBuilder.setTitle(R.string.move_to_folder)
120 dialogBuilder.setView(R.layout.move_to_folder_dialog)
122 // Set the listener for the cancel button. Using `null` as the listener closes the dialog without doing anything else.
123 dialogBuilder.setNegativeButton(R.string.cancel, null)
125 // Set the listener fo the move button.
126 dialogBuilder.setPositiveButton(R.string.move) { _: DialogInterface?, _: Int ->
127 // Return the dialog fragment to the parent activity on move.
128 moveToFolderListener.onMoveToFolder(this)
131 // Create an alert dialog from the alert dialog builder.
132 val alertDialog = dialogBuilder.create()
134 // Get a handle for the shared preferences.
135 val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(requireContext())
137 // Get the screenshot preference.
138 val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false)
140 // Disable screenshots if not allowed.
141 if (!allowScreenshots) {
142 // Disable screenshots.
143 alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
146 // The alert dialog must be shown before items in the layout can be modified.
149 // Get a handle for the positive button.
150 val moveButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE)
152 // Initially disable the positive button.
153 moveButton.isEnabled = false
155 // Initialize the except folders string builder.
156 exceptFolders = StringBuilder()
158 // Declare the cursor variables.
159 val foldersCursor: Cursor
160 val foldersCursorAdapter: CursorAdapter
162 // Check to see if the bookmark is currently in the home folder.
163 if (currentFolder.isEmpty()) { // The bookmark is currently in the home folder. Don't display `Home Folder` at the top of the list view.
164 // If a folder is selected, add it and all children to the list of folders not to display.
165 for (databaseIdLong in selectedBookmarksLongArray) {
166 // Get the database ID int for each selected bookmark.
167 val databaseIdInt = databaseIdLong.toInt()
169 // Check to see if the bookmark is a folder.
170 if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
171 // Add the folder to the list of folders not to display.
172 addFolderToExceptFolders(databaseIdInt)
176 // Get a cursor containing the folders to display.
177 foldersCursor = bookmarksDatabaseHelper.getFoldersExcept(exceptFolders.toString())
179 // Populate the folders cursor adapter.
180 foldersCursorAdapter = populateFoldersCursorAdapter(requireContext(), foldersCursor)
181 } else { // The current folder is not directly in the home folder. Display `Home Folder` at the top of the list view.
182 // Get the home folder icon drawable.
183 val homeFolderIconDrawable = ContextCompat.getDrawable(requireActivity().applicationContext, R.drawable.folder_gray_bitmap)
185 // Convert the home folder icon drawable to a bitmap drawable.
186 val homeFolderIconBitmapDrawable = homeFolderIconDrawable as BitmapDrawable
188 // Convert the home folder bitmap drawable to a bitmap.
189 val homeFolderIconBitmap = homeFolderIconBitmapDrawable.bitmap
191 // Create a home folder icon byte array output stream.
192 val homeFolderIconByteArrayOutputStream = ByteArrayOutputStream()
194 // Compress the bitmap using a coroutine with Dispatchers.Default.
195 CoroutineScope(Dispatchers.Main).launch {
196 withContext(Dispatchers.Default) {
197 // Convert the home folder bitmap to a byte array. `0` is for lossless compression (the only option for a PNG).
198 homeFolderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, homeFolderIconByteArrayOutputStream)
202 // Convert the home folder icon byte array output stream to a byte array.
203 val homeFolderIconByteArray = homeFolderIconByteArrayOutputStream.toByteArray()
205 // Setup the home folder matrix cursor column names.
206 val homeFolderMatrixCursorColumnNames = arrayOf(BookmarksDatabaseHelper.ID, BookmarksDatabaseHelper.BOOKMARK_NAME, BookmarksDatabaseHelper.FAVORITE_ICON)
208 // Setup a matrix cursor for the `Home Folder`.
209 val homeFolderMatrixCursor = MatrixCursor(homeFolderMatrixCursorColumnNames)
211 // Add the home folder to the home folder matrix cursor.
212 homeFolderMatrixCursor.addRow(arrayOf<Any>(0, getString(R.string.home_folder), homeFolderIconByteArray))
214 // Add the parent folder to the list of folders not to display.
215 exceptFolders.append(DatabaseUtils.sqlEscapeString(currentFolder))
217 // If a folder is selected, add it and all children to the list of folders not to display.
218 for (databaseIdLong in selectedBookmarksLongArray) {
219 // Get the database ID int for each selected bookmark.
220 val databaseIdInt = databaseIdLong.toInt()
222 // Check to see if the bookmark is a folder.
223 if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
224 // Add the folder to the list of folders not to display.
225 addFolderToExceptFolders(databaseIdInt)
229 // Get a cursor containing the folders to display.
230 foldersCursor = bookmarksDatabaseHelper.getFoldersExcept(exceptFolders.toString())
232 // Combine the home folder matrix cursor and the folders cursor.
233 val foldersMergeCursor = MergeCursor(arrayOf(homeFolderMatrixCursor, foldersCursor))
235 // Populate the folders cursor adapter.
236 foldersCursorAdapter = populateFoldersCursorAdapter(requireContext(), foldersMergeCursor)
239 // Get a handle for the folders list view.
240 val foldersListView = alertDialog.findViewById<ListView>(R.id.move_to_folder_listview)!!
242 // Set the folder list view adapter.
243 foldersListView.adapter = foldersCursorAdapter
245 // Enable the move button when a folder is selected.
246 foldersListView.onItemClickListener = OnItemClickListener { _: AdapterView<*>?, _: View?, _: Int, _: Long ->
247 // Enable the move button.
248 moveButton.isEnabled = true
251 // Return the alert dialog.
255 private fun addFolderToExceptFolders(databaseIdInt: Int) {
256 // Get the name of the selected folder.
257 val folderName = bookmarksDatabaseHelper.getFolderName(databaseIdInt)
259 // Populate the list of folders not to get.
260 if (exceptFolders.isEmpty()) {
261 // Add the selected folder to the list of folders not to display.
262 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName))
264 // Add the selected folder to the end of the list of folders not to display.
265 exceptFolders.append(",")
266 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName))
269 // Add the selected folder's subfolders to the list of folders not to display.
270 addSubfoldersToExceptFolders(folderName)
273 private fun addSubfoldersToExceptFolders(folderName: String) {
274 // Get a cursor with all the immediate subfolders.
275 val subfoldersCursor = bookmarksDatabaseHelper.getSubfolders(folderName)
277 // Add each subfolder to the list of folders not to display.
278 for (i in 0 until subfoldersCursor.count) {
279 // Move the subfolder cursor to the current item.
280 subfoldersCursor.moveToPosition(i)
282 // Get the name of the subfolder.
283 val subfolderName = subfoldersCursor.getString(subfoldersCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME))
285 // Add the subfolder to except folders.
286 exceptFolders.append(",")
287 exceptFolders.append(DatabaseUtils.sqlEscapeString(subfolderName))
289 // Run the same tasks for any subfolders of the subfolder.
290 addSubfoldersToExceptFolders(subfolderName)
294 private fun populateFoldersCursorAdapter(context: Context, cursor: Cursor): CursorAdapter {
295 // Return the folders cursor adapter.
296 return object : CursorAdapter(context, cursor, false) {
297 override fun newView(context: Context, cursor: Cursor, parent: ViewGroup): View {
298 // Inflate the individual item layout.
299 return requireActivity().layoutInflater.inflate(R.layout.move_to_folder_item_linearlayout, parent, false)
302 override fun bindView(view: View, context: Context, cursor: Cursor) {
303 // Get the data from the cursor.
304 val folderIconByteArray = cursor.getBlob(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.FAVORITE_ICON))
305 val folderName = cursor.getString(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME))
307 // Get handles for the views.
308 val folderIconImageView = view.findViewById<ImageView>(R.id.move_to_folder_icon)
309 val folderNameTextView = view.findViewById<TextView>(R.id.move_to_folder_name_textview)
311 // Convert the byte array to a bitmap beginning at the first byte and ending at the last.
312 val folderIconBitmap = BitmapFactory.decodeByteArray(folderIconByteArray, 0, folderIconByteArray.size)
314 // Display the folder icon bitmap.
315 folderIconImageView.setImageBitmap(folderIconBitmap)
317 // Display the folder name.
318 folderNameTextView.text = folderName