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 // We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <= 22.
29 import android.support.annotation.NonNull;
30 import android.support.v7.app.AppCompatDialogFragment;
31 import android.view.KeyEvent;
32 import android.view.View;
33 import android.view.WindowManager;
34 import android.widget.EditText;
36 import com.stoutner.privacybrowser.R;
38 public class AddDomainDialog extends AppCompatDialogFragment {
39 // The public interface is used to send information back to the parent activity.
40 public interface AddDomainListener {
41 void onAddDomain(AppCompatDialogFragment dialogFragment);
44 // `addDomainListener` is used in `onAttach()` and `onCreateDialog()`.
45 private AddDomainListener addDomainListener;
48 public void onAttach(Context context) {
49 super.onAttach(context);
51 // Get a handle for `AddDomainListener` from `context`.
53 addDomainListener = (AddDomainListener) context;
54 } catch(ClassCastException exception) {
55 throw new ClassCastException(context.toString() + " must implement `AddDomainListener`.");
59 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
60 @SuppressLint("InflateParams")
63 public Dialog onCreateDialog(Bundle savedInstanceState) {
64 // Use `AlertDialog.Builder` to create the `AlertDialog`. The style formats the color of the button text.
65 AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
66 dialogBuilder.setTitle(R.string.add_domain);
67 // The parent view is `null` because it will be assigned by the `AlertDialog`.
68 dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.add_domain_dialog, null));
70 // Set an `onClick()` listener for the negative button.
71 dialogBuilder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
73 public void onClick(DialogInterface dialog, int which) {
74 // Do nothing. The `AlertDialog` will close automatically.
78 // Set an `onClick()` listener for the positive button.
79 dialogBuilder.setPositiveButton(R.string.add, new DialogInterface.OnClickListener() {
81 public void onClick(DialogInterface dialog, int which) {
82 // Return the `DialogFragment` to the parent activity on add.
83 addDomainListener.onAddDomain(AddDomainDialog.this);
87 // Create an `AlertDialog` from the `AlertDialog.Builder`.
88 final AlertDialog alertDialog = dialogBuilder.create();
90 // Remove the warning below the `setSoftInputMode` might produce `java.lang.NullPointerException`.
91 assert alertDialog.getWindow() != null;
93 // Show the keyboard when the `AlertDialog` is displayed on the screen.
94 alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
96 // We need to show the `AlertDialog` before w3e can call `setOnKeyListener()` below.
99 // Allow the `enter` key on the keyboard to create the domain from `add_domain_edittext`.
100 EditText addDomainEditText = (EditText) alertDialog.findViewById(R.id.domain_name_edittext);
101 addDomainEditText.setOnKeyListener(new View.OnKeyListener() {
102 public boolean onKey(View view, int keyCode, KeyEvent event) {
103 // If the event is a key-down on the `enter` key, select the `PositiveButton` `Add`.
104 if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
105 // Trigger `addDomainListener` and return the `DialogFragment` to the parent activity.
106 addDomainListener.onAddDomain(AddDomainDialog.this);
107 // Manually dismiss the `AlertDialog`.
108 alertDialog.dismiss();
109 // Consume the event.
111 } else { // If any other key was pressed, do not consume the event.
117 // `onCreateDialog()` requires the return of an `AlertDialog`.