X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FEditBookmarkDialog.kt;fp=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FEditBookmarkDialog.kt;h=efe1c0d5b42175d3d535dfa008fc6ead6c2c3048;hp=0000000000000000000000000000000000000000;hb=bc2e180db377eedadbe1ea455d8fb311ead8f9d6;hpb=a9b4d8c78a305c2602ced2058702254ea4e3b79b diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/EditBookmarkDialog.kt b/app/src/main/java/com/stoutner/privacybrowser/dialogs/EditBookmarkDialog.kt new file mode 100644 index 00000000..efe1c0d5 --- /dev/null +++ b/app/src/main/java/com/stoutner/privacybrowser/dialogs/EditBookmarkDialog.kt @@ -0,0 +1,288 @@ +/* + * 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 + } +} \ No newline at end of file