/* * Copyright © 2016-2020 Soren Stoutner . * * This file is part of Privacy Browser . * * Privacy Browser is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Privacy Browser is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Privacy Browser. If not, see . */ package com.stoutner.privacybrowser.dialogs import android.annotation.SuppressLint import android.app.AlertDialog import android.app.Dialog import android.content.Context import android.content.DialogInterface import android.graphics.Bitmap import android.graphics.BitmapFactory import android.os.Bundle import android.text.Editable import android.text.TextWatcher import android.view.KeyEvent import android.view.View import android.view.WindowManager import android.widget.EditText import android.widget.ImageView import androidx.fragment.app.DialogFragment import androidx.preference.PreferenceManager import com.stoutner.privacybrowser.R import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper import java.io.ByteArrayOutputStream class CreateBookmarkFolderDialog: DialogFragment() { // The public interface is used to send information back to the parent activity. interface CreateBookmarkFolderListener { fun onCreateBookmarkFolder(dialogFragment: DialogFragment, favoriteIconBitmap: Bitmap) } // The create bookmark folder listener is initialized in `onAttach()` and used in `onCreateDialog()`. private lateinit var createBookmarkFolderListener: CreateBookmarkFolderListener override fun onAttach(context: Context) { // Run the default commands. super.onAttach(context) // Get a handle for the create bookmark folder listener from the launching context. createBookmarkFolderListener = context as CreateBookmarkFolderListener } companion object { // `@JvmStatic` will no longer be required once all the code has transitioned to Kotlin. Also, the function can then be moved out of a companion object and just become a package-level function. @JvmStatic fun createBookmarkFolder(favoriteIconBitmap: Bitmap): CreateBookmarkFolderDialog { // Create a favorite icon byte array output stream. val favoriteIconByteArrayOutputStream = ByteArrayOutputStream() // Convert the favorite icon to a PNG and place it in the byte array output stream. `0` is for lossless compression (the only option for a PNG). favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, favoriteIconByteArrayOutputStream) // Convert the byte array output stream to a byte array. val favoriteIconByteArray = favoriteIconByteArrayOutputStream.toByteArray() // Create an arguments bundle. val argumentsBundle = Bundle() // Store the favorite icon in the bundle. argumentsBundle.putByteArray("favorite_icon_byte_array", favoriteIconByteArray) // Create a new instance of the dialog. val createBookmarkFolderDialog = CreateBookmarkFolderDialog() // Add the bundle to the dialog. createBookmarkFolderDialog.arguments = argumentsBundle // Return the new dialog. return createBookmarkFolderDialog } } // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the alert dialog. @SuppressLint("InflateParams") override fun onCreateDialog(savedInstanceState: Bundle?): Dialog { // Get the arguments. val arguments = requireArguments() // Get the favorite icon byte array. val favoriteIconByteArray = arguments.getByteArray("favorite_icon_byte_array")!! // Convert the favorite icon byte array to a bitmap. val favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.size) // Get a handle for the shared preferences. val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context) // Get the screenshot and theme preferences. val allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false) val darkTheme = sharedPreferences.getBoolean("dark_theme", false) // Use an alert dialog builder to create the dialog and set the style according to the theme. val dialogBuilder = if (darkTheme) { AlertDialog.Builder(context, R.style.PrivacyBrowserAlertDialogDark) } else { AlertDialog.Builder(context, R.style.PrivacyBrowserAlertDialogLight) } // Set the title. dialogBuilder.setTitle(R.string.create_folder) // Set the view. The parent view is null because it will be assigned by the alert dialog. dialogBuilder.setView(requireActivity().layoutInflater.inflate(R.layout.create_bookmark_folder_dialog, null)) // Set a listener on the cancel button. Using `null` as the listener closes the dialog without doing anything else. dialogBuilder.setNegativeButton(R.string.cancel, null) // Set a listener on the create button. dialogBuilder.setPositiveButton(R.string.create) { _: DialogInterface, _: Int -> // Return the dialog fragment to the parent activity on create. createBookmarkFolderListener.onCreateBookmarkFolder(this, favoriteIconBitmap) } // Create an alert dialog from the builder. val alertDialog = dialogBuilder.create() // Disable screenshots if not allowed. if (!allowScreenshots) { alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE) } // Display the keyboard. alertDialog.window!!.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE) // The alert dialog must be shown before the content can be modified. alertDialog.show() // Get handles for the views in the dialog. val webPageIconImageView = alertDialog.findViewById(R.id.create_folder_web_page_icon) val folderNameEditText = alertDialog.findViewById(R.id.create_folder_name_edittext) val createButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE) // Display the current favorite icon. webPageIconImageView.setImageBitmap(favoriteIconBitmap) // Initially disable the create button. createButton.isEnabled = false // Initialize the database helper. The `0` specifies a database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`. val bookmarksDatabaseHelper = BookmarksDatabaseHelper(context, null, null, 0) // Enable the create button if the new folder name is unique. folderNameEditText.addTextChangedListener(object: TextWatcher { override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) { // Do nothing. } override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) { // Do nothing. } override fun afterTextChanged(editable: Editable) { // Convert the current text to a string. val folderName = editable.toString() // Check if a folder with the name already exists. val folderExistsCursor = bookmarksDatabaseHelper.getFolder(folderName) // Enable the create button if the new folder name is not empty and doesn't already exist. createButton.isEnabled = folderName.isNotEmpty() && (folderExistsCursor.count == 0) } }) // Set the enter key on the keyboard to create the folder from the edit text. folderNameEditText.setOnKeyListener { _: View?, keyCode: Int, keyEvent: KeyEvent -> // Check the key code, event, and button status. if (keyEvent.action == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_ENTER && createButton.isEnabled) { // The event is a key-down on the enter key and the create button is enabled. // Trigger the create bookmark folder listener and return the dialog fragment to the parent activity. createBookmarkFolderListener.onCreateBookmarkFolder(this, favoriteIconBitmap) // Manually dismiss the alert dialog. alertDialog.dismiss() // Consume the event. return@setOnKeyListener true } else { // Some other key was pressed or the create button is disabled. return@setOnKeyListener false } } // Return the alert dialog. return alertDialog } }