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.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 // Set the view. The parent view is `null` because it will be assigned by the `AlertDialog`.
85 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.add_domain_dialog, null));
87 // Set an `onClick()` listener for the negative button.
88 dialogBuilder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
90 public void onClick(DialogInterface dialog, int which) {
91 // Do nothing. The `AlertDialog` will close automatically.
95 // Set an `onClick()` listener for the positive button.
96 dialogBuilder.setPositiveButton(R.string.add, new DialogInterface.OnClickListener() {
98 public void onClick(DialogInterface dialog, int which) {
99 // Return the `DialogFragment` to the parent activity on add.
100 addDomainListener.onAddDomain(AddDomainDialog.this);
104 // Create an `AlertDialog` from the `AlertDialog.Builder`.
105 final AlertDialog alertDialog = dialogBuilder.create();
107 // Remove the warning below the `setSoftInputMode` might produce `java.lang.NullPointerException`.
108 assert alertDialog.getWindow() != null;
110 // Show the keyboard when the `AlertDialog` is displayed on the screen.
111 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
113 // The `AlertDialog` must be shown before the contents can be edited.
116 // Initialize `domainsDatabaseHelper`. The two `nulls` do not specify the database name or a `CursorFactory`. The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
117 final DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(getContext(), null, null, 0);
119 // Get handles for the views in `alertDialog`.
120 final EditText addDomainEditText = (EditText) alertDialog.findViewById(R.id.domain_name_edittext);
121 final TextView domainNameAlreadyExistsTextView = (TextView) alertDialog.findViewById(R.id.domain_name_already_exists_textview);
122 final Button addButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
124 // Update the status of the warning text and the `add` button.
125 addDomainEditText.addTextChangedListener(new TextWatcher() {
127 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
132 public void onTextChanged(CharSequence s, int start, int before, int count) {
137 public void afterTextChanged(Editable s) {
138 if (domainsDatabaseHelper.getCursorForDomainName(addDomainEditText.getText().toString()).getCount() >0) { // The domain already exists.
139 // Show the warning text.
140 domainNameAlreadyExistsTextView.setVisibility(View.VISIBLE);
142 // Disable the `add` button.
143 addButton.setEnabled(false);
144 } else { // The domain do not yet exist.
145 // Hide the warning text.
146 domainNameAlreadyExistsTextView.setVisibility(View.GONE);
148 // Enable the `add` button.
149 addButton.setEnabled(true);
154 // Get the current domain from `formattedUrlString`.
155 Uri currentUri = Uri.parse(MainWebViewActivity.formattedUrlString);
156 addDomainEditText.setText(currentUri.getHost());
158 // Allow the `enter` key on the keyboard to create the domain from `add_domain_edittext`.
159 addDomainEditText.setOnKeyListener(new View.OnKeyListener() {
160 public boolean onKey(View view, int keyCode, KeyEvent event) {
161 // If the event is a key-down on the `enter` key, select the `PositiveButton` `Add`.
162 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
163 // Trigger `addDomainListener` and return the `DialogFragment` to the parent activity.
164 addDomainListener.onAddDomain(AddDomainDialog.this);
165 // Manually dismiss the `AlertDialog`.
166 alertDialog.dismiss();
167 // Consume the event.
169 } else { // If any other key was pressed, do not consume the event.
175 // `onCreateDialog()` requires the return of an `AlertDialog`.