/* * 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.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.Button import android.widget.EditText import android.widget.ImageView import android.widget.RadioButton import android.widget.RadioGroup import androidx.appcompat.app.AlertDialog import androidx.fragment.app.DialogFragment import androidx.preference.PreferenceManager import com.stoutner.privacybrowser.R import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper import java.io.ByteArrayOutputStream // Declare the class constants. private const val DATABASE_ID = "database_id" private const val FAVORITE_ICON_BYTE_ARRAY = "favorite_icon_byte_array" class EditBookmarkDialog: DialogFragment() { // The public interface is used to send information back to the parent activity. interface EditBookmarkListener { fun onSaveBookmark(dialogFragment: DialogFragment, selectedBookmarkDatabaseId: Int, favoriteIconBitmap: Bitmap) } // Declare the class variables. private lateinit var editBookmarkListener: EditBookmarkListener // Declare the class views. private lateinit var nameEditText: EditText private lateinit var urlEditText: EditText private lateinit var newIconRadioButton: RadioButton private lateinit var saveButton: Button override fun onAttach(context: Context) { // Run the default commands. super.onAttach(context) // Get a handle for the edit bookmark listener from the launching context. editBookmarkListener = context as EditBookmarkListener } 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 bookmarkDatabaseId(databaseId: Int, favoriteIconBitmap: Bitmap): EditBookmarkDialog { // 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 variables in the bundle. argumentsBundle.putInt(DATABASE_ID, databaseId) argumentsBundle.putByteArray(FAVORITE_ICON_BYTE_ARRAY, favoriteIconByteArray) // Create a new instance of the dialog. val editBookmarkDialog = EditBookmarkDialog() // Add the arguments bundle to the dialog. editBookmarkDialog.arguments = argumentsBundle // Return the new dialog. return editBookmarkDialog } } // `@SuppressLint("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 variables from the arguments. val selectedBookmarkDatabaseId = arguments.getInt(DATABASE_ID) 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) // Initialize the bookmarks 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) // Get a cursor with the selected bookmark. val bookmarkCursor = bookmarksDatabaseHelper.getBookmark(selectedBookmarkDatabaseId) // Move the cursor to the first position. bookmarkCursor.moveToFirst() // Use an alert dialog builder to create the alert dialog. val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog) // Set the title. dialogBuilder.setTitle(R.string.edit_bookmark) // Set the view. The parent view is null because it will be assigned by the alert dialog. dialogBuilder.setView(requireActivity().layoutInflater.inflate(R.layout.edit_bookmark_dialog, null)) // Set the cancel button listener. Using `null` as the listener closes the dialog without doing anything else. dialogBuilder.setNegativeButton(R.string.cancel, null) // Set the save button listener. dialogBuilder.setPositiveButton(R.string.save) { _: DialogInterface?, _: Int -> // Return the dialog fragment to the parent activity. editBookmarkListener.onSaveBookmark(this, selectedBookmarkDatabaseId, favoriteIconBitmap) } // Create an alert dialog from the builder. val alertDialog = dialogBuilder.create() // Get a handle for the shared preferences. val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context) // Get the screenshot preference. val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false) // Disable screenshots if not allowed. if (!allowScreenshots) { alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE) } // The alert dialog must be shown before items in the layout can be modified. alertDialog.show() // Get handles for the layout items. val iconRadioGroup = alertDialog.findViewById(R.id.edit_bookmark_icon_radiogroup)!! val currentIconImageView = alertDialog.findViewById(R.id.edit_bookmark_current_icon)!! val newFavoriteIconImageView = alertDialog.findViewById(R.id.edit_bookmark_webpage_favorite_icon)!! newIconRadioButton = alertDialog.findViewById(R.id.edit_bookmark_webpage_favorite_icon_radiobutton)!! nameEditText = alertDialog.findViewById(R.id.edit_bookmark_name_edittext)!! urlEditText = alertDialog.findViewById(R.id.edit_bookmark_url_edittext)!! saveButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE) // Get the current favorite icon byte array from the cursor. val currentIconByteArray = bookmarkCursor.getBlob(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)) // Convert the byte array to a bitmap beginning at the first byte and ending at the last. val currentIconBitmap = BitmapFactory.decodeByteArray(currentIconByteArray, 0, currentIconByteArray.size) // Display the current icon bitmap. currentIconImageView.setImageBitmap(currentIconBitmap) // Set the new favorite icon bitmap. newFavoriteIconImageView.setImageBitmap(favoriteIconBitmap) // Store the current bookmark name and URL. val currentName = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)) val currentUrl = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)) // Populate the edit texts. nameEditText.setText(currentName) urlEditText.setText(currentUrl) // Initially disable the save button. saveButton.isEnabled = false // Update the save button if the icon selection changes. iconRadioGroup.setOnCheckedChangeListener { _: RadioGroup?, _: Int -> // Update the save button. updateSaveButton(currentName, currentUrl) } // Update the save button if the bookmark name changes. nameEditText.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(s: Editable) { // Update the save button. updateSaveButton(currentName, currentUrl) } }) // Update the save button if the URL changes. urlEditText.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(s: Editable) { // Update the edit button. updateSaveButton(currentName, currentUrl) } }) // Allow the enter key on the keyboard to save the bookmark from the bookmark name edit text. nameEditText.setOnKeyListener { _: View?, keyCode: Int, event: KeyEvent -> // Check the key code, event, and button status. if (event.action == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_ENTER && saveButton.isEnabled) { // The enter key was pressed and the save button is enabled. // Trigger the listener and return the dialog fragment to the parent activity. editBookmarkListener.onSaveBookmark(this, selectedBookmarkDatabaseId, favoriteIconBitmap) // Manually dismiss the alert dialog. alertDialog.dismiss() // Consume the event. return@setOnKeyListener true } else { // If any other key was pressed, or if the save button is currently disabled, do not consume the event. return@setOnKeyListener false } } // Allow the enter key on the keyboard to save the bookmark from the URL edit text. urlEditText.setOnKeyListener { _: View?, keyCode: Int, event: KeyEvent -> // Check the key code, event, and button status. if (event.action == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_ENTER && saveButton.isEnabled) { // The enter key was pressed and the save button is enabled. // Trigger the listener and return the dialog fragment to the parent activity. editBookmarkListener.onSaveBookmark(this, selectedBookmarkDatabaseId, favoriteIconBitmap) // Manually dismiss the alert dialog. alertDialog.dismiss() // Consume the event. return@setOnKeyListener true } else { // If any other key was pressed, or if the save button is currently disabled, do not consume the event. return@setOnKeyListener false } } // Return the alert dialog. return alertDialog } private fun updateSaveButton(currentName: String, currentUrl: String) { // Get the text from the edit texts. val newName = nameEditText.text.toString() val newUrl = urlEditText.text.toString() // Has the favorite icon changed? val iconChanged = newIconRadioButton.isChecked // Has the name changed? val nameChanged = newName != currentName // Has the URL changed? val urlChanged = newUrl != currentUrl // Update the enabled status of the save button. saveButton.isEnabled = iconChanged || nameChanged || urlChanged } }