2 * Copyright © 2017-2019 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.AlertDialog;
24 import android.app.Dialog;
25 import android.content.Context;
26 import android.content.DialogInterface;
27 import android.content.SharedPreferences;
28 import android.net.Uri;
29 import android.os.Bundle;
30 import android.preference.PreferenceManager;
31 import android.text.Editable;
32 import android.text.TextWatcher;
33 import android.view.KeyEvent;
34 import android.view.View;
35 import android.view.WindowManager;
36 import android.widget.Button;
37 import android.widget.EditText;
38 import android.widget.TextView;
40 import androidx.annotation.NonNull;
41 import androidx.fragment.app.DialogFragment; // The AndroidX dialog fragment must be used or an error is produced on API <=22.
43 import com.stoutner.privacybrowser.R;
44 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
46 public class AddDomainDialog extends DialogFragment {
47 // The public interface is used to send information back to the parent activity.
48 public interface AddDomainListener {
49 void onAddDomain(DialogFragment dialogFragment);
52 // The add domain listener is used in `onAttach()` and `onCreateDialog()`.
53 private AddDomainListener addDomainListener;
56 public void onAttach(Context context) {
57 // Run the default commands.
58 super.onAttach(context);
60 // Get a handle for the listener from the launching context.
61 addDomainListener = (AddDomainListener) context;
64 public static AddDomainDialog addDomain(String url) {
65 // Create an arguments bundle.
66 Bundle argumentsBundle = new Bundle();
68 // Store the URL in the bundle.
69 argumentsBundle.putString("url", url);
71 // Create a new instance of the dialog.
72 AddDomainDialog addDomainDialog = new AddDomainDialog();
74 // Add the bundle to the dialog.
75 addDomainDialog.setArguments(argumentsBundle);
77 // Return the new dialog.
78 return addDomainDialog;
81 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
82 @SuppressLint("InflateParams")
85 public Dialog onCreateDialog(Bundle savedInstanceState) {
87 Bundle arguments = getArguments();
89 // Remove the incorrect lint warning below that the arguments might be null.
90 assert arguments != null;
92 // Get the URL from the bundle.
93 String url = arguments.getString("url");
95 // Use an alert dialog builder to create the alert dialog.
96 AlertDialog.Builder dialogBuilder;
98 // Get a handle for the shared preferences.
99 SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getContext());
101 // Get the screenshot and theme preferences.
102 boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false);
103 boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
105 // Set the style according to the theme.
107 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
109 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
113 dialogBuilder.setTitle(R.string.add_domain);
115 // Remove the incorrect lint warning below that `getActivity()` might be null.
116 assert getActivity() != null;
118 // Set the view. The parent view is `null` because it will be assigned by the alert dialog.
119 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.add_domain_dialog, null));
121 // Set a listener for the negative button.
122 dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
123 // Do nothing. The alert dialog will close automatically.
126 // Set a listener for the positive button.
127 dialogBuilder.setPositiveButton(R.string.add, (DialogInterface dialog, int which) -> {
128 // Return the dialog fragment to the parent activity on add.
129 addDomainListener.onAddDomain(this);
132 // Create an alert dialog from the builder.
133 final AlertDialog alertDialog = dialogBuilder.create();
135 // Remove the warning below that `getWindow()` might be null.
136 assert alertDialog.getWindow() != null;
138 // Disable screenshots if not allowed.
139 if (!allowScreenshots) {
140 alertDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
143 // Show the keyboard when the alert dialog is displayed on the screen.
144 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
146 // The alert dialog must be shown before the contents can be edited.
149 // Initialize `domainsDatabaseHelper`. The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
150 final DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(getContext(), null, null, 0);
152 // Get handles for the views in the alert dialog.
153 final EditText addDomainEditText = alertDialog.findViewById(R.id.domain_name_edittext);
154 final TextView domainNameAlreadyExistsTextView = alertDialog.findViewById(R.id.domain_name_already_exists_textview);
155 final Button addButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
157 // Update the status of the warning text and the add button.
158 addDomainEditText.addTextChangedListener(new TextWatcher() {
160 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
165 public void onTextChanged(CharSequence s, int start, int before, int count) {
170 public void afterTextChanged(Editable s) {
171 if (domainsDatabaseHelper.getCursorForDomainName(addDomainEditText.getText().toString()).getCount() >0) { // The domain already exists.
172 // Show the warning text.
173 domainNameAlreadyExistsTextView.setVisibility(View.VISIBLE);
175 // Disable the add button.
176 addButton.setEnabled(false);
177 } else { // The domain do not yet exist.
178 // Hide the warning text.
179 domainNameAlreadyExistsTextView.setVisibility(View.GONE);
181 // Enable the add button.
182 addButton.setEnabled(true);
187 // Convert the URL to a URI.
188 Uri currentUri = Uri.parse(url);
190 // Display the host in the add domain edit text.
191 addDomainEditText.setText(currentUri.getHost());
193 // Allow the enter key on the keyboard to create the domain from the add domain edit text.
194 addDomainEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
195 // If the event is a key-down on the enter key, select the `PositiveButton` `Add`.
196 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
197 // Trigger `addDomainListener` and return the dialog fragment to the parent activity.
198 addDomainListener.onAddDomain(this);
200 // Manually dismiss the alert dialog.
201 alertDialog.dismiss();
203 // Consume the event.
205 } else { // If any other key was pressed, do not consume the event.
210 // Return the alert dialog.