2 * Copyright © 2017-2018 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.os.Bundle;
28 import android.support.annotation.NonNull;
29 // `AppCompatDialogFragment` is used instead of `DialogFragment` to avoid an error on API <=22.
30 import android.support.v7.app.AppCompatDialogFragment;
31 import android.text.SpannableStringBuilder;
32 import android.text.Spanned;
33 import android.text.style.ForegroundColorSpan;
34 import android.view.KeyEvent;
35 import android.view.LayoutInflater;
36 import android.view.View;
37 import android.view.WindowManager;
38 import android.widget.EditText;
39 import android.widget.TextView;
41 import com.stoutner.privacybrowser.R;
42 import com.stoutner.privacybrowser.activities.MainWebViewActivity;
44 public class HttpAuthenticationDialog extends AppCompatDialogFragment{
45 // `httpAuthenticationListener` is used in `onAttach()` and `onCreateDialog()`
46 private HttpAuthenticationListener httpAuthenticationListener;
48 // The public interface is used to send information back to the parent activity.
49 public interface HttpAuthenticationListener {
50 void onHttpAuthenticationCancel();
52 void onHttpAuthenticationProceed(AppCompatDialogFragment dialogFragment);
55 public void onAttach(Context context) {
56 super.onAttach(context);
58 // Get a handle for `httpAuthenticationListener` from `context`.
59 httpAuthenticationListener = (HttpAuthenticationListener) context;
62 public static HttpAuthenticationDialog displayDialog(String host, String realm) {
63 // Store the strings in a `Bundle`.
64 Bundle argumentsBundle = new Bundle();
65 argumentsBundle.putString("Host", host);
66 argumentsBundle.putString("Realm", realm);
68 // Add `argumentsBundle` to this instance of `HttpAuthenticationDialog`.
69 HttpAuthenticationDialog thisHttpAuthenticationDialog = new HttpAuthenticationDialog();
70 thisHttpAuthenticationDialog.setArguments(argumentsBundle);
71 return thisHttpAuthenticationDialog;
74 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
75 @SuppressLint("InflateParams")
78 public Dialog onCreateDialog(Bundle savedInstanceState) {
79 // Remove the incorrect lint warnings that `getString()` might be null.
80 assert getArguments() != null;
82 // Get the host and realm variables from the bundle.
83 String httpAuthHost = getArguments().getString("Host");
84 String httpAuthRealm = getArguments().getString("Realm");
86 // Remove the incorrect lint warning that `getActivity()` might be null.
87 assert getActivity() != null;
89 // Get the activity's layout inflater.
90 LayoutInflater layoutInflater = getActivity().getLayoutInflater();
92 // Use an alert dialog builder to create the alert dialog.
93 AlertDialog.Builder dialogBuilder;
95 // Set the style according to the theme.
96 if (MainWebViewActivity.darkTheme) {
97 // Set the dialog theme.
98 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
101 dialogBuilder.setIcon(R.drawable.lock_dark);
103 // Set the dialog theme.
104 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
107 dialogBuilder.setIcon(R.drawable.lock_light);
111 dialogBuilder.setTitle(R.string.http_authentication);
113 // Set the layout. The parent view is `null` because it will be assigned by `AlertDialog`.
114 dialogBuilder.setView(layoutInflater.inflate(R.layout.http_authentication_dialog, null));
116 // Setup the negative button.
117 dialogBuilder.setNegativeButton(R.string.close, (DialogInterface dialog, int which) -> {
118 // Call `onHttpAuthenticationCancel()` and return the `DialogFragment` to the parent activity.
119 httpAuthenticationListener.onHttpAuthenticationCancel();
122 // Setup the positive button.
123 dialogBuilder.setPositiveButton(R.string.proceed, (DialogInterface dialog, int which) -> {
124 // Call `onHttpAuthenticationProceed()` and return the `DialogFragment` to the parent activity.
125 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
128 // Create an alert dialog from the alert dialog builder.
129 final AlertDialog alertDialog = dialogBuilder.create();
131 // Remove the warning below that `getWindow()` might be null.
132 assert alertDialog.getWindow() != null;
134 // Disable screenshots if not allowed.
135 if (!MainWebViewActivity.allowScreenshots) {
136 alertDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
139 // Show the keyboard when the `AlertDialog` is displayed on the screen.
140 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
142 // The alert dialog needs to be shown before the contents can be modified.
145 // Get handles for the views in `alertDialog`.
146 TextView realmTextView = alertDialog.findViewById(R.id.http_authentication_realm);
147 TextView hostTextView = alertDialog.findViewById(R.id.http_authentication_host);
148 EditText usernameEditText = alertDialog.findViewById(R.id.http_authentication_username);
149 EditText passwordEditText = alertDialog.findViewById(R.id.http_authentication_password);
151 // Set the realm text.
152 realmTextView.setText(httpAuthRealm);
154 // Set the realm text color according to the theme. The deprecated `.getColor()` must be used until API >= 23.
155 if (MainWebViewActivity.darkTheme) {
156 //noinspection deprecation
157 realmTextView.setTextColor(getResources().getColor(R.color.gray_300));
159 //noinspection deprecation
160 realmTextView.setTextColor(getResources().getColor(R.color.black));
163 // Initialize the host label and the `SpannableStringBuilder`.
164 String hostLabel = getString(R.string.host) + " ";
165 SpannableStringBuilder hostStringBuilder = new SpannableStringBuilder(hostLabel + httpAuthHost);
167 // Create a blue `ForegroundColorSpan`.
168 ForegroundColorSpan blueColorSpan;
170 // Set `blueColorSpan` according to the theme. The deprecated `getColor()` must be used until API >= 23.
171 if (MainWebViewActivity.darkTheme) {
172 //noinspection deprecation
173 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_400));
175 //noinspection deprecation
176 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
179 // Setup the span to display the host name in blue. `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
180 hostStringBuilder.setSpan(blueColorSpan, hostLabel.length(), hostStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
182 // Set the host text.
183 hostTextView.setText(hostStringBuilder);
185 // Allow the `enter` key on the keyboard to trigger `onHttpAuthenticationProceed` from `usernameEditText`.
186 usernameEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
187 // If the event is a key-down on the `enter` key, call `onHttpAuthenticationProceed()`.
188 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
189 // Trigger `onHttpAuthenticationProceed` and return the `DialogFragment` to the parent activity.
190 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
192 // Manually dismiss the `AlertDialog`.
193 alertDialog.dismiss();
195 // Consume the event.
197 } else { // If any other key was pressed, do not consume the event.
202 // Allow the `enter` key on the keyboard to trigger `onHttpAuthenticationProceed()` from `passwordEditText`.
203 passwordEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
204 // If the event is a key-down on the `enter` key, call `onHttpAuthenticationProceed()`.
205 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
206 // Trigger `onHttpAuthenticationProceed` and return the `DialogFragment` to the parent activity.
207 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
209 // Manually dismiss the `AlertDialog`.
210 alertDialog.dismiss();
212 // Consume the event.
214 } else { // If any other key was pressed, do not consume the event.
219 // `onCreateDialog()` requires the return of an `AlertDialog`.