2 * Copyright © 2017 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 // Save the host and realm in class variables.
67 httpAuthHost = getArguments().getString("Host");
68 httpAuthRealm = getArguments().getString("Realm");
71 // The public interface is used to send information back to the parent activity.
72 public interface HttpAuthenticationListener {
73 void onHttpAuthenticationCancel();
75 void onHttpAuthenticationProceed(AppCompatDialogFragment dialogFragment);
78 // `httpAuthenticationListener` is used in `onAttach()` and `onCreateDialog()`
79 private HttpAuthenticationListener httpAuthenticationListener;
81 public void onAttach(Context context) {
82 super.onAttach(context);
84 // Get a handle for `httpAuthenticationListener` from `context`.
86 httpAuthenticationListener = (HttpAuthenticationListener) context;
87 } catch(ClassCastException exception) {
88 throw new ClassCastException(context.toString() + " must implement `HttpAuthenticationListener`.");
92 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
93 @SuppressLint("InflateParams")
96 public Dialog onCreateDialog(Bundle savedInstanceState) {
97 // Get the activity's layout inflater.
98 LayoutInflater layoutInflater = getActivity().getLayoutInflater();
100 // Use `AlertDialog.Builder` to create the `AlertDialog`.
101 AlertDialog.Builder dialogBuilder;
103 // Set the style according to the theme.
104 if (MainWebViewActivity.darkTheme) {
105 // Set the dialog theme.
106 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
109 dialogBuilder.setIcon(R.drawable.lock_dark);
111 // Set the dialog theme.
112 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
115 dialogBuilder.setIcon(R.drawable.lock_light);
119 dialogBuilder.setTitle(R.string.http_authentication);
121 // Set the layout. The parent view is `null` because it will be assigned by `AlertDialog`.
122 dialogBuilder.setView(layoutInflater.inflate(R.layout.http_authentication_dialog, null));
124 // Setup the negative button.
125 dialogBuilder.setNegativeButton(R.string.close, new DialogInterface.OnClickListener() {
127 public void onClick(DialogInterface dialog, int which) {
128 // Call `onHttpAuthenticationCancel()` and return the `DialogFragment` to the parent activity.
129 httpAuthenticationListener.onHttpAuthenticationCancel();
133 // Setup the positive button.
134 dialogBuilder.setPositiveButton(R.string.proceed, new DialogInterface.OnClickListener() {
136 public void onClick(DialogInterface dialog, int which) {
137 // Call `onHttpAuthenticationProceed()` and return the `DialogFragment` to the parent activity.
138 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
142 // Create an `AlertDialog` from the `AlertDialog.Builder`.
143 final AlertDialog alertDialog = dialogBuilder.create();
145 // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`.
146 assert alertDialog.getWindow() != null;
148 // Show the keyboard when the `AlertDialog` is displayed on the screen.
149 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
151 // The `AlertDialog` needs to be shown before `setOnKeyListener()` can be called.
154 // Get handles for the views in `alertDialog`.
155 TextView realmTextView = (TextView) alertDialog.findViewById(R.id.http_authentication_realm);
156 TextView hostTextView = (TextView) alertDialog.findViewById(R.id.http_authentication_host);
157 EditText usernameEditText = (EditText) alertDialog.findViewById(R.id.http_authentication_username);
158 EditText passwordEditText = (EditText) alertDialog.findViewById(R.id.http_authentication_password);
160 // Set the realm text.
161 realmTextView.setText(httpAuthRealm);
163 // Set the realm text color according to the theme. The deprecated `.getColor()` must be used until API >= 23.
164 if (MainWebViewActivity.darkTheme) {
165 //noinspection deprecation
166 realmTextView.setTextColor(getResources().getColor(R.color.gray_300));
168 //noinspection deprecation
169 realmTextView.setTextColor(getResources().getColor(R.color.black));
172 // Initialize the host label and the `SpannableStringBuilder`.
173 String hostLabel = getString(R.string.host) + " ";
174 SpannableStringBuilder hostStringBuilder = new SpannableStringBuilder(hostLabel + httpAuthHost);
176 // Create a blue `ForegroundColorSpan`.
177 ForegroundColorSpan blueColorSpan;
179 // Set `blueColorSpan` according to the theme. The deprecated `getColor()` must be used until API >= 23.
180 if (MainWebViewActivity.darkTheme) {
181 //noinspection deprecation
182 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_400));
184 //noinspection deprecation
185 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
188 // Setup the span to display the host name in blue. `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
189 hostStringBuilder.setSpan(blueColorSpan, hostLabel.length(), hostStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
191 // Set the host text.
192 hostTextView.setText(hostStringBuilder);
194 // Allow the `enter` key on the keyboard to trigger `onHttpAuthenticationProceed` from `usernameEditText`.
195 usernameEditText.setOnKeyListener(new View.OnKeyListener() {
196 public boolean onKey(View view, int keyCode, KeyEvent event) {
197 // If the event is a key-down on the `enter` key, call `onHttpAuthenticationProceed()`.
198 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
199 // Trigger `onHttpAuthenticationProceed` and return the `DialogFragment` to the parent activity.
200 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
202 // Manually dismiss the `AlertDialog`.
203 alertDialog.dismiss();
205 // Consume the event.
207 } else { // If any other key was pressed, do not consume the event.
213 // Allow the `enter` key on the keyboard to trigger `onHttpAuthenticationProceed()` from `passwordEditText`.
214 passwordEditText.setOnKeyListener(new View.OnKeyListener() {
215 public boolean onKey(View view, int keyCode, KeyEvent event) {
216 // If the event is a key-down on the `enter` key, call `onHttpAuthenticationProceed()`.
217 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
218 // Trigger `onHttpAuthenticationProceed` and return the `DialogFragment` to the parent activity.
219 httpAuthenticationListener.onHttpAuthenticationProceed(HttpAuthenticationDialog.this);
221 // Manually dismiss the `AlertDialog`.
222 alertDialog.dismiss();
224 // Consume the event.
226 } else { // If any other key was pressed, do not consume the event.
232 // `onCreateDialog()` requires the return of an `AlertDialog`.