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