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.net.Uri;
28 import android.os.Bundle;
29 import android.text.Editable;
30 import android.text.TextWatcher;
31 import android.view.KeyEvent;
32 import android.view.View;
33 import android.view.WindowManager;
34 import android.widget.Button;
35 import android.widget.EditText;
36 import android.widget.TextView;
38 import androidx.annotation.NonNull;
39 import androidx.fragment.app.DialogFragment; // The AndroidX dialog fragment must be used or an error is produced on API <=22.
41 import com.stoutner.privacybrowser.R;
42 import com.stoutner.privacybrowser.activities.MainWebViewActivity;
43 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
45 public class AddDomainDialog extends DialogFragment {
46 // The public interface is used to send information back to the parent activity.
47 public interface AddDomainListener {
48 void onAddDomain(DialogFragment dialogFragment);
51 // The add domain listener is used in `onAttach()` and `onCreateDialog()`.
52 private AddDomainListener addDomainListener;
55 public void onAttach(Context context) {
56 // Run the default commands.
57 super.onAttach(context);
59 // Get a handle for the listener from the launching context.
60 addDomainListener = (AddDomainListener) context;
63 public static AddDomainDialog addDomain(String url) {
64 // Create an arguments bundle.
65 Bundle argumentsBundle = new Bundle();
67 // Store the URL in the bundle.
68 argumentsBundle.putString("url", url);
70 // Create a new instance of the dialog.
71 AddDomainDialog addDomainDialog = new AddDomainDialog();
73 // Add the bundle to the dialog.
74 addDomainDialog.setArguments(argumentsBundle);
76 // Return the new dialog.
77 return addDomainDialog;
80 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
81 @SuppressLint("InflateParams")
84 public Dialog onCreateDialog(Bundle savedInstanceState) {
86 Bundle arguments = getArguments();
88 // Remove the incorrect lint warning below that the arguments might be null.
89 assert arguments != null;
91 // Get the URL from the bundle.
92 String url = arguments.getString("url");
94 // Use an alert dialog builder to create the alert dialog.
95 AlertDialog.Builder dialogBuilder;
97 // Set the style according to the theme.
98 if (MainWebViewActivity.darkTheme) {
99 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
101 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
105 dialogBuilder.setTitle(R.string.add_domain);
107 // Remove the incorrect lint warning below that `getActivity()` might be null.
108 assert getActivity() != null;
110 // Set the view. The parent view is `null` because it will be assigned by the alert dialog.
111 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.add_domain_dialog, null));
113 // Set a listener for the negative button.
114 dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
115 // Do nothing. The alert dialog will close automatically.
118 // Set a listener for the positive button.
119 dialogBuilder.setPositiveButton(R.string.add, (DialogInterface dialog, int which) -> {
120 // Return the dialog fragment to the parent activity on add.
121 addDomainListener.onAddDomain(this);
124 // Create an alert dialog from the builder.
125 final AlertDialog alertDialog = dialogBuilder.create();
127 // Remove the warning below that `getWindow()` might be null.
128 assert alertDialog.getWindow() != null;
130 // Disable screenshots if not allowed.
131 if (!MainWebViewActivity.allowScreenshots) {
132 alertDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
135 // Show the keyboard when the alert dialog is displayed on the screen.
136 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
138 // The alert dialog must be shown before the contents can be edited.
141 // Initialize `domainsDatabaseHelper`. The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
142 final DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(getContext(), null, null, 0);
144 // Get handles for the views in the alert dialog.
145 final EditText addDomainEditText = alertDialog.findViewById(R.id.domain_name_edittext);
146 final TextView domainNameAlreadyExistsTextView = alertDialog.findViewById(R.id.domain_name_already_exists_textview);
147 final Button addButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
149 // Update the status of the warning text and the add button.
150 addDomainEditText.addTextChangedListener(new TextWatcher() {
152 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
157 public void onTextChanged(CharSequence s, int start, int before, int count) {
162 public void afterTextChanged(Editable s) {
163 if (domainsDatabaseHelper.getCursorForDomainName(addDomainEditText.getText().toString()).getCount() >0) { // The domain already exists.
164 // Show the warning text.
165 domainNameAlreadyExistsTextView.setVisibility(View.VISIBLE);
167 // Disable the add button.
168 addButton.setEnabled(false);
169 } else { // The domain do not yet exist.
170 // Hide the warning text.
171 domainNameAlreadyExistsTextView.setVisibility(View.GONE);
173 // Enable the add button.
174 addButton.setEnabled(true);
179 // Convert the URL to a URI.
180 Uri currentUri = Uri.parse(url);
182 // Display the host in the add domain edit text.
183 addDomainEditText.setText(currentUri.getHost());
185 // Allow the enter key on the keyboard to create the domain from the add domain edit text.
186 addDomainEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
187 // If the event is a key-down on the enter key, select the `PositiveButton` `Add`.
188 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
189 // Trigger `addDomainListener` and return the dialog fragment to the parent activity.
190 addDomainListener.onAddDomain(this);
192 // Manually dismiss the alert dialog.
193 alertDialog.dismiss();
195 // Consume the event.
197 } else { // If any other key was pressed, do not consume the event.
202 // Return the alert dialog.