Home | History | Annotate | Download | only in accelerators 
      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 
     11 namespace ash {
     12 namespace {
     13 bool speech_feedback_toggler_enabled = false;
     14 }
     15 
     16 // static
     17 bool SpokenFeedbackToggler::IsEnabled() {
     18   return speech_feedback_toggler_enabled;
     19 }
     20 
     21 // static
     22 void SpokenFeedbackToggler::SetEnabled(bool enabled) {
     23   speech_feedback_toggler_enabled = enabled;
     24 }
     25 
     26 // static
     27 scoped_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 
     32 bool SpokenFeedbackToggler::ShouldProcessEvent(
     33     const ui::KeyEvent* event) const {
     34   return IsEnabled() && event->key_code() == ui::VKEY_F6;
     35 }
     36 
     37 bool SpokenFeedbackToggler::IsStartEvent(const ui::KeyEvent* event) const {
     38   return event->type() == ui::ET_KEY_PRESSED &&
     39       event->flags() & ui::EF_SHIFT_DOWN;
     40 }
     41 
     42 void 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 
     50 void SpokenFeedbackToggler::OnKeyUnhold(const ui::KeyEvent* event) {
     51   toggled_ = false;
     52 }
     53 
     54 SpokenFeedbackToggler::SpokenFeedbackToggler() : toggled_(false) {}
     55 
     56 SpokenFeedbackToggler::~SpokenFeedbackToggler() {}
     57 
     58 }  // namespace ash
     59