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.net.Uri;
28 import android.os.Bundle;
29 // We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <= 22.
30 import android.support.annotation.NonNull;
31 import android.support.v7.app.AppCompatDialogFragment;
32 import android.text.Editable;
33 import android.text.TextWatcher;
34 import android.view.KeyEvent;
35 import android.view.View;
36 import android.view.WindowManager;
37 import android.widget.Button;
38 import android.widget.EditText;
39 import android.widget.TextView;
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 AppCompatDialogFragment {
46 // The public interface is used to send information back to the parent activity.
47 public interface AddDomainListener {
48 void onAddDomain(AppCompatDialogFragment dialogFragment);
51 // `addDomainListener` is used in `onAttach()` and `onCreateDialog()`.
52 private AddDomainListener addDomainListener;
55 public void onAttach(Context context) {
56 super.onAttach(context);
58 // Get a handle for `AddDomainListener` from `context`.
60 addDomainListener = (AddDomainListener) context;
61 } catch(ClassCastException exception) {
62 throw new ClassCastException(context.toString() + " must implement `AddDomainListener`.");
66 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
67 @SuppressLint("InflateParams")
70 public Dialog onCreateDialog(Bundle savedInstanceState) {
71 // Use `AlertDialog.Builder` to create the `AlertDialog`.
72 AlertDialog.Builder dialogBuilder;
74 // Set the style according to the theme.
75 if (MainWebViewActivity.darkTheme) {
76 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
78 dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
82 dialogBuilder.setTitle(R.string.add_domain);
84 // Remove the incorrect lint warning below that `getActivity()` might be null.
85 assert getActivity() != null;
87 // Set the view. The parent view is `null` because it will be assigned by the alert dialog.
88 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.add_domain_dialog, null));
90 // Set a listener for the negative button.
91 dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
92 // Do nothing. The `AlertDialog` will close automatically.
95 // Set a listener for the positive button.
96 dialogBuilder.setPositiveButton(R.string.add, (DialogInterface dialog, int which) -> {
97 // Return the `DialogFragment` to the parent activity on add.
98 addDomainListener.onAddDomain(AddDomainDialog.this);
101 // Create an alert dialog from the builder.
102 final AlertDialog alertDialog = dialogBuilder.create();
104 // Remove the warning below that `setSoftInputMode` might be null.
105 assert alertDialog.getWindow() != null;
107 // Show the keyboard when the alert dialog is displayed on the screen.
108 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
110 // The alert dialog must be shown before the contents can be edited.
113 // Initialize `domainsDatabaseHelper`. The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
114 final DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(getContext(), null, null, 0);
116 // Get handles for the views in the alert dialog.
117 final EditText addDomainEditText = alertDialog.findViewById(R.id.domain_name_edittext);
118 final TextView domainNameAlreadyExistsTextView = alertDialog.findViewById(R.id.domain_name_already_exists_textview);
119 final Button addButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
121 // Update the status of the warning text and the add button.
122 addDomainEditText.addTextChangedListener(new TextWatcher() {
124 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
129 public void onTextChanged(CharSequence s, int start, int before, int count) {
134 public void afterTextChanged(Editable s) {
135 if (domainsDatabaseHelper.getCursorForDomainName(addDomainEditText.getText().toString()).getCount() >0) { // The domain already exists.
136 // Show the warning text.
137 domainNameAlreadyExistsTextView.setVisibility(View.VISIBLE);
139 // Disable the add button.
140 addButton.setEnabled(false);
141 } else { // The domain do not yet exist.
142 // Hide the warning text.
143 domainNameAlreadyExistsTextView.setVisibility(View.GONE);
145 // Enable the add button.
146 addButton.setEnabled(true);
151 // Get the current domain from `formattedUrlString`.
152 Uri currentUri = Uri.parse(MainWebViewActivity.formattedUrlString);
153 addDomainEditText.setText(currentUri.getHost());
155 // Allow the `enter` key on the keyboard to create the domain from `add_domain_edittext`.
156 addDomainEditText.setOnKeyListener((View view, int keyCode, KeyEvent event) -> {
157 // If the event is a key-down on the `enter` key, select the `PositiveButton` `Add`.
158 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
159 // Trigger `addDomainListener` and return the `DialogFragment` to the parent activity.
160 addDomainListener.onAddDomain(AddDomainDialog.this);
161 // Manually dismiss the `AlertDialog`.
162 alertDialog.dismiss();
163 // Consume the event.
165 } else { // If any other key was pressed, do not consume the event.
170 // `onCreateDialog()` requires the return of an `AlertDialog`.