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      1 // Copyright 2013 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/default_accessibility_delegate.h"
      6 
      7 #include <limits>
      8 
      9 namespace ash {
     10 
     11 DefaultAccessibilityDelegate::DefaultAccessibilityDelegate()
     12     : spoken_feedback_enabled_(false),
     13       high_contrast_enabled_(false),
     14       screen_magnifier_enabled_(false),
     15       screen_magnifier_type_(kDefaultMagnifierType),
     16       large_cursor_enabled_(false),
     17       autoclick_enabled_(false),
     18       virtual_keyboard_enabled_(false),
     19       accessibility_alert_(A11Y_ALERT_NONE) {
     20 }
     21 
     22 DefaultAccessibilityDelegate::~DefaultAccessibilityDelegate() {}
     23 
     24 bool DefaultAccessibilityDelegate::IsSpokenFeedbackEnabled() const {
     25   return spoken_feedback_enabled_;
     26 }
     27 
     28 void DefaultAccessibilityDelegate::ToggleHighContrast() {
     29   high_contrast_enabled_ = !high_contrast_enabled_;
     30 }
     31 
     32 bool DefaultAccessibilityDelegate::IsHighContrastEnabled() const {
     33   return high_contrast_enabled_;
     34 }
     35 
     36 void DefaultAccessibilityDelegate::SetMagnifierEnabled(bool enabled) {
     37   screen_magnifier_enabled_ = enabled;
     38 }
     39 
     40 void DefaultAccessibilityDelegate::SetMagnifierType(MagnifierType type) {
     41   screen_magnifier_type_ = type;
     42 }
     43 
     44 bool DefaultAccessibilityDelegate::IsMagnifierEnabled() const {
     45   return screen_magnifier_enabled_;
     46 }
     47 
     48 MagnifierType DefaultAccessibilityDelegate::GetMagnifierType() const {
     49   return screen_magnifier_type_;
     50 }
     51 
     52 void DefaultAccessibilityDelegate::SetLargeCursorEnabled(bool enabled) {
     53   large_cursor_enabled_ = enabled;
     54 }
     55 
     56 bool DefaultAccessibilityDelegate::IsLargeCursorEnabled() const {
     57   return large_cursor_enabled_;
     58 }
     59 
     60 void DefaultAccessibilityDelegate::SetAutoclickEnabled(bool enabled) {
     61   autoclick_enabled_ = enabled;
     62 }
     63 
     64 bool DefaultAccessibilityDelegate::IsAutoclickEnabled() const {
     65   return autoclick_enabled_;
     66 }
     67 
     68 void DefaultAccessibilityDelegate::SetVirtualKeyboardEnabled(bool enabled) {
     69   virtual_keyboard_enabled_ = enabled;
     70 }
     71 
     72 bool DefaultAccessibilityDelegate::IsVirtualKeyboardEnabled() const {
     73   return virtual_keyboard_enabled_;
     74 }
     75 
     76 bool DefaultAccessibilityDelegate::ShouldShowAccessibilityMenu() const {
     77   return spoken_feedback_enabled_ ||
     78          high_contrast_enabled_ ||
     79          screen_magnifier_enabled_ ||
     80          large_cursor_enabled_ ||
     81          autoclick_enabled_ ||
     82          virtual_keyboard_enabled_;
     83 }
     84 
     85 bool DefaultAccessibilityDelegate::IsBrailleDisplayConnected() const {
     86   return false;
     87 }
     88 
     89 void DefaultAccessibilityDelegate::SilenceSpokenFeedback() const {
     90 }
     91 
     92 void DefaultAccessibilityDelegate::ToggleSpokenFeedback(
     93     AccessibilityNotificationVisibility notify) {
     94   spoken_feedback_enabled_ = !spoken_feedback_enabled_;
     95 }
     96 
     97 void DefaultAccessibilityDelegate::SaveScreenMagnifierScale(double scale) {
     98 }
     99 
    100 double DefaultAccessibilityDelegate::GetSavedScreenMagnifierScale() {
    101   return std::numeric_limits<double>::min();
    102 }
    103 
    104 void DefaultAccessibilityDelegate::TriggerAccessibilityAlert(
    105     AccessibilityAlert alert) {
    106   accessibility_alert_ = alert;
    107 }
    108 
    109 AccessibilityAlert DefaultAccessibilityDelegate::GetLastAccessibilityAlert() {
    110   return accessibility_alert_;
    111 }
    112 
    113 void DefaultAccessibilityDelegate::PlayEarcon(int sound_key) {
    114 }
    115 
    116 base::TimeDelta DefaultAccessibilityDelegate::PlayShutdownSound() const {
    117   return base::TimeDelta();
    118 }
    119 
    120 }  // namespace ash
    121