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{
46 // The private variables are used in `onCreate()` and `onCreateDialog()`.
47 private String httpAuthHost;
48 private String httpAuthRealm;
50 public static HttpAuthenticationDialog displayDialog(String host, String realm) {
51 // Store the strings in a `Bundle`.
52 Bundle argumentsBundle = new Bundle();
53 argumentsBundle.putString("Host", host);
54 argumentsBundle.putString("Realm", realm);
56 // Add `argumentsBundle` to this instance of `HttpAuthenticationDialog`.
57 HttpAuthenticationDialog thisHttpAuthenticationDialog = new HttpAuthenticationDialog();
58 thisHttpAuthenticationDialog.setArguments(argumentsBundle);
59 return thisHttpAuthenticationDialog;
63 public void onCreate(Bundle savedInstanceState) {
64 super.onCreate(savedInstanceState);
66 // Remove the incorrect lint warnings that `getString()` might be null.
67 assert getArguments() != null;
69 // Save the host and realm in class variables.
70 httpAuthHost = getArguments().getString("Host");
71 httpAuthRealm = getArguments().getString("Realm");
74 // The public interface is used to send information back to the parent activity.
75 public interface HttpAuthenticationListener {
76 void onHttpAuthenticationCancel();
78 void onHttpAuthenticationProceed(AppCompatDialogFragment dialogFragment);
81 // `httpAuthenticationListener` is used in `onAttach()` and `onCreateDialog()`
82 private HttpAuthenticationListener httpAuthenticationListener;
84 public void onAttach(Context context) {
85 super.onAttach(context);
87 // Get a handle for `httpAuthenticationListener` from `context`.
89 httpAuthenticationListener = (HttpAuthenticationListener) context;
90 } catch(ClassCastException exception) {
91 throw new ClassCastException(context.toString() + " must implement `HttpAuthenticationListener`.");
95 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
96 @SuppressLint("InflateParams")
99 public Dialog onCreateDialog(Bundle savedInstanceState) {
100 // Remove the incorrect lint warning that `getActivity()` might be null.
101 assert getActivity() != null;
103 // Get the activity's layout inflater.
104 LayoutInflater layoutInflater = getActivity().getLayoutInflater();
106 // Use an alert dialog builder to create the alert dialog.
107 AlertDialog.Builder dialogBuilder;
109 // Set the style according to the theme.
110 if (MainWebViewActivity.darkTheme) {
111 // Set the dialog theme.
112 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
115 dialogBuilder.setIcon(R.drawable.lock_dark);
117 // Set the dialog theme.
118 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
121 dialogBuilder.setIcon(R.drawable.lock_light);
125 dialogBuilder.setTitle(R.string.http_authentication);
127 // Set the layout. The parent view is `null` because it will be assigned by `AlertDialog`.
128 dialogBuilder.setView(layoutInflater.inflate(R.layout.http_authentication_dialog, null));
130 // Setup the negative button.
131 dialogBuilder.setNegativeButton(R.string.close, (DialogInterface dialog, int which) -> {
132 // Call `onHttpAuthenticationCancel()` and return the `DialogFragment` to the parent activity.
133 httpAuthenticationListener.onHttpAuthenticationCancel();
136 // Setup the positive button.
137 dialogBuilder.setPositiveButton(R.string.proceed, (DialogInterface dialog, int which) -> {
138 // Call `onHttpAuthenticationProceed()` and return the `DialogFragment` to the parent activity.
139 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
142 // Create an alert dialog from the alert dialog builder.
143 final AlertDialog alertDialog = dialogBuilder.create();
145 // Remove the warning below that `getWindow()` might be null.
146 assert alertDialog.getWindow() != null;
148 // Disable screenshots if not allowed.
149 if (!MainWebViewActivity.allowScreenshots) {
150 alertDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
153 // Show the keyboard when the `AlertDialog` is displayed on the screen.
154 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
156 // The alert dialog needs to be shown before the contents can be modified.
159 // Get handles for the views in `alertDialog`.
160 TextView realmTextView = alertDialog.findViewById(R.id.http_authentication_realm);
161 TextView hostTextView = alertDialog.findViewById(R.id.http_authentication_host);
162 EditText usernameEditText = alertDialog.findViewById(R.id.http_authentication_username);
163 EditText passwordEditText = alertDialog.findViewById(R.id.http_authentication_password);
165 // Set the realm text.
166 realmTextView.setText(httpAuthRealm);
168 // Set the realm text color according to the theme. The deprecated `.getColor()` must be used until API >= 23.
169 if (MainWebViewActivity.darkTheme) {
170 //noinspection deprecation
171 realmTextView.setTextColor(getResources().getColor(R.color.gray_300));
173 //noinspection deprecation
174 realmTextView.setTextColor(getResources().getColor(R.color.black));
177 // Initialize the host label and the `SpannableStringBuilder`.
178 String hostLabel = getString(R.string.host) + " ";
179 SpannableStringBuilder hostStringBuilder = new SpannableStringBuilder(hostLabel + httpAuthHost);
181 // Create a blue `ForegroundColorSpan`.
182 ForegroundColorSpan blueColorSpan;
184 // Set `blueColorSpan` according to the theme. The deprecated `getColor()` must be used until API >= 23.
185 if (MainWebViewActivity.darkTheme) {
186 //noinspection deprecation
187 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_400));
189 //noinspection deprecation
190 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
193 // Setup the span to display the host name in blue. `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
194 hostStringBuilder.setSpan(blueColorSpan, hostLabel.length(), hostStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
196 // Set the host text.
197 hostTextView.setText(hostStringBuilder);
199 // Allow the `enter` key on the keyboard to trigger `onHttpAuthenticationProceed` from `usernameEditText`.
200 usernameEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
201 // If the event is a key-down on the `enter` key, call `onHttpAuthenticationProceed()`.
202 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
203 // Trigger `onHttpAuthenticationProceed` and return the `DialogFragment` to the parent activity.
204 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
206 // Manually dismiss the `AlertDialog`.
207 alertDialog.dismiss();
209 // Consume the event.
211 } else { // If any other key was pressed, do not consume the event.
216 // Allow the `enter` key on the keyboard to trigger `onHttpAuthenticationProceed()` from `passwordEditText`.
217 passwordEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
218 // If the event is a key-down on the `enter` key, call `onHttpAuthenticationProceed()`.
219 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
220 // Trigger `onHttpAuthenticationProceed` and return the `DialogFragment` to the parent activity.
221 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
223 // Manually dismiss the `AlertDialog`.
224 alertDialog.dismiss();
226 // Consume the event.
228 } else { // If any other key was pressed, do not consume the event.
233 // `onCreateDialog()` requires the return of an `AlertDialog`.