1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ash/accelerators/spoken_feedback_toggler.h"
6
7#include "ash/accelerators/key_hold_detector.h"
8#include "ash/accessibility_delegate.h"
9#include "ash/shell.h"
10
11namespace ash {
12namespace {
13bool speech_feedback_toggler_enabled = false;
14}
15
16// static
17bool SpokenFeedbackToggler::IsEnabled() {
18  return speech_feedback_toggler_enabled;
19}
20
21// static
22void SpokenFeedbackToggler::SetEnabled(bool enabled) {
23  speech_feedback_toggler_enabled = enabled;
24}
25
26// static
27scoped_ptr<ui::EventHandler> SpokenFeedbackToggler::CreateHandler() {
28  scoped_ptr<KeyHoldDetector::Delegate> delegate(new SpokenFeedbackToggler());
29  return scoped_ptr<ui::EventHandler>(new KeyHoldDetector(delegate.Pass()));
30}
31
32bool SpokenFeedbackToggler::ShouldProcessEvent(
33    const ui::KeyEvent* event) const {
34  return IsEnabled() && event->key_code() == ui::VKEY_F6;
35}
36
37bool SpokenFeedbackToggler::IsStartEvent(const ui::KeyEvent* event) const {
38  return event->type() == ui::ET_KEY_PRESSED &&
39      event->flags() & ui::EF_SHIFT_DOWN;
40}
41
42void SpokenFeedbackToggler::OnKeyHold(const ui::KeyEvent* event) {
43  if (!toggled_) {
44    toggled_ = true;
45    Shell::GetInstance()->accessibility_delegate()->
46        ToggleSpokenFeedback(A11Y_NOTIFICATION_SHOW);
47  }
48}
49
50void SpokenFeedbackToggler::OnKeyUnhold(const ui::KeyEvent* event) {
51  toggled_ = false;
52}
53
54SpokenFeedbackToggler::SpokenFeedbackToggler() : toggled_(false) {}
55
56SpokenFeedbackToggler::~SpokenFeedbackToggler() {}
57
58}  // namespace ash
59