2 * Copyright © 2016-2021 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.Dialog
24 import android.content.Context
25 import android.content.DialogInterface
26 import android.database.Cursor
27 import android.database.DatabaseUtils
28 import android.database.MatrixCursor
29 import android.database.MergeCursor
30 import android.graphics.Bitmap
31 import android.graphics.BitmapFactory
32 import android.graphics.drawable.BitmapDrawable
33 import android.os.Bundle
34 import android.view.View
35 import android.view.ViewGroup
36 import android.view.WindowManager
37 import android.widget.AdapterView
38 import android.widget.AdapterView.OnItemClickListener
39 import android.widget.ImageView
40 import android.widget.ListView
41 import android.widget.TextView
43 import androidx.appcompat.app.AlertDialog
44 import androidx.core.content.ContextCompat
45 import androidx.cursoradapter.widget.CursorAdapter
46 import androidx.fragment.app.DialogFragment
47 import androidx.preference.PreferenceManager
49 import com.stoutner.privacybrowser.R
50 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper
52 import java.io.ByteArrayOutputStream
53 import java.lang.StringBuilder
55 // Define the class constants.
56 private const val CURRENT_FOLDER = "current_folder"
57 private const val SELECTED_BOOKMARKS_LONG_ARRAY = "selected_bookmarks_long_array"
59 class MoveToFolderDialog : DialogFragment() {
60 // Declare the class variables.
61 private lateinit var moveToFolderListener: MoveToFolderListener
62 private lateinit var bookmarksDatabaseHelper: BookmarksDatabaseHelper
63 private lateinit var exceptFolders: StringBuilder
65 // The public interface is used to send information back to the parent activity.
66 interface MoveToFolderListener {
67 fun onMoveToFolder(dialogFragment: DialogFragment)
70 override fun onAttach(context: Context) {
71 // Run the default commands.
72 super.onAttach(context)
74 // Get a handle for the move to folder listener from the launching context.
75 moveToFolderListener = context as MoveToFolderListener
79 // `@JvmStatic` will no longer be required once all the code has transitioned to Kotlin.
81 fun moveBookmarks(currentFolder: String, selectedBookmarksLongArray: LongArray): MoveToFolderDialog {
82 // Create an arguments bundle.
83 val argumentsBundle = Bundle()
85 // Store the arguments in the bundle.
86 argumentsBundle.putString(CURRENT_FOLDER, currentFolder)
87 argumentsBundle.putLongArray(SELECTED_BOOKMARKS_LONG_ARRAY, selectedBookmarksLongArray)
89 // Create a new instance of the dialog.
90 val moveToFolderDialog = MoveToFolderDialog()
92 // And the bundle to the dialog.
93 moveToFolderDialog.arguments = argumentsBundle
95 // Return the new dialog.
96 return moveToFolderDialog
100 // `@SuppressLint("InflateParams")` removes the warning about using `null` as the parent view group when inflating the alert dialog.
101 @SuppressLint("InflateParams")
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. The `0` specifies a database version, but that is ignored and set instead using a constant in the bookmarks database helper.
108 bookmarksDatabaseHelper = BookmarksDatabaseHelper(context, null, null, 0)
110 // Use an alert dialog builder to create the alert dialog.
111 val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
113 // Set the icon according to the theme.
114 dialogBuilder.setIconAttribute(R.attr.moveToFolderBlueIcon)
117 dialogBuilder.setTitle(R.string.move_to_folder)
119 // Set the view. The parent view is `null` because it will be assigned by the alert dialog.
120 dialogBuilder.setView(layoutInflater.inflate(R.layout.move_to_folder_dialog, null))
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(context)
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 // Convert the home folder bitmap to a byte array. `0` is for lossless compression (the only option for a PNG).
195 homeFolderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, homeFolderIconByteArrayOutputStream)
197 // Convert the home folder icon byte array output stream to a byte array.
198 val homeFolderIconByteArray = homeFolderIconByteArrayOutputStream.toByteArray()
200 // Setup the home folder matrix cursor column names.
201 val homeFolderMatrixCursorColumnNames = arrayOf(BookmarksDatabaseHelper._ID, BookmarksDatabaseHelper.BOOKMARK_NAME, BookmarksDatabaseHelper.FAVORITE_ICON)
203 // Setup a matrix cursor for the `Home Folder`.
204 val homeFolderMatrixCursor = MatrixCursor(homeFolderMatrixCursorColumnNames)
206 // Add the home folder to the home folder matrix cursor.
207 homeFolderMatrixCursor.addRow(arrayOf<Any>(0, getString(R.string.home_folder), homeFolderIconByteArray))
209 // Add the parent folder to the list of folders not to display.
210 exceptFolders.append(DatabaseUtils.sqlEscapeString(currentFolder))
212 // If a folder is selected, add it and all children to the list of folders not to display.
213 for (databaseIdLong in selectedBookmarksLongArray) {
214 // Get the database ID int for each selected bookmark.
215 val databaseIdInt = databaseIdLong.toInt()
217 // Check to see if the bookmark is a folder.
218 if (bookmarksDatabaseHelper.isFolder(databaseIdInt)) {
219 // Add the folder to the list of folders not to display.
220 addFolderToExceptFolders(databaseIdInt)
224 // Get a cursor containing the folders to display.
225 foldersCursor = bookmarksDatabaseHelper.getFoldersExcept(exceptFolders.toString())
227 // Combine the home folder matrix cursor and the folders cursor.
228 val foldersMergeCursor = MergeCursor(arrayOf(homeFolderMatrixCursor, foldersCursor))
230 // Populate the folders cursor adapter.
231 foldersCursorAdapter = populateFoldersCursorAdapter(requireContext(), foldersMergeCursor)
234 // Get a handle for the folders list view.
235 val foldersListView = alertDialog.findViewById<ListView>(R.id.move_to_folder_listview)!!
237 // Set the folder list view adapter.
238 foldersListView.adapter = foldersCursorAdapter
240 // Enable the move button when a folder is selected.
241 foldersListView.onItemClickListener = OnItemClickListener { _: AdapterView<*>?, _: View?, _: Int, _: Long ->
242 // Enable the move button.
243 moveButton.isEnabled = true
246 // Return the alert dialog.
250 private fun addFolderToExceptFolders(databaseIdInt: Int) {
251 // Get the name of the selected folder.
252 val folderName = bookmarksDatabaseHelper.getFolderName(databaseIdInt)
254 // Populate the list of folders not to get.
255 if (exceptFolders.isEmpty()) {
256 // Add the selected folder to the list of folders not to display.
257 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName))
259 // Add the selected folder to the end of the list of folders not to display.
260 exceptFolders.append(",")
261 exceptFolders.append(DatabaseUtils.sqlEscapeString(folderName))
264 // Add the selected folder's subfolders to the list of folders not to display.
265 addSubfoldersToExceptFolders(folderName)
268 private fun addSubfoldersToExceptFolders(folderName: String) {
269 // Get a cursor with all the immediate subfolders.
270 val subfoldersCursor = bookmarksDatabaseHelper.getSubfolders(folderName)
272 // Add each subfolder to the list of folders not to display.
273 for (i in 0 until subfoldersCursor.count) {
274 // Move the subfolder cursor to the current item.
275 subfoldersCursor.moveToPosition(i)
277 // Get the name of the subfolder.
278 val subfolderName = subfoldersCursor.getString(subfoldersCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME))
280 // Add the subfolder to except folders.
281 exceptFolders.append(",")
282 exceptFolders.append(DatabaseUtils.sqlEscapeString(subfolderName))
284 // Run the same tasks for any subfolders of the subfolder.
285 addSubfoldersToExceptFolders(subfolderName)
289 private fun populateFoldersCursorAdapter(context: Context, cursor: Cursor): CursorAdapter {
290 // Return the folders cursor adapter.
291 return object : CursorAdapter(context, cursor, false) {
292 override fun newView(context: Context, cursor: Cursor, parent: ViewGroup): View {
293 // Inflate the individual item layout.
294 return requireActivity().layoutInflater.inflate(R.layout.move_to_folder_item_linearlayout, parent, false)
297 override fun bindView(view: View, context: Context, cursor: Cursor) {
298 // Get the data from the cursor.
299 val folderIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON))
300 val folderName = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME))
302 // Get handles for the views.
303 val folderIconImageView = view.findViewById<ImageView>(R.id.move_to_folder_icon)
304 val folderNameTextView = view.findViewById<TextView>(R.id.move_to_folder_name_textview)
306 // Convert the byte array to a bitmap beginning at the first byte and ending at the last.
307 val folderIconBitmap = BitmapFactory.decodeByteArray(folderIconByteArray, 0, folderIconByteArray.size)
309 // Display the folder icon bitmap.
310 folderIconImageView.setImageBitmap(folderIconBitmap)
312 // Display the folder name.
313 folderNameTextView.text = folderName