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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 namespace internal {
     11 
     12 DefaultAccessibilityDelegate::DefaultAccessibilityDelegate()
     13     : spoken_feedback_enabled_(false),
     14       high_contrast_enabled_(false),
     15       screen_magnifier_enabled_(false),
     16       screen_magnifier_type_(kDefaultMagnifierType),
     17       large_cursor_enabled_(false),
     18       autoclick_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 bool DefaultAccessibilityDelegate::ShouldShowAccessibilityMenu() const {
     69   return spoken_feedback_enabled_ ||
     70          high_contrast_enabled_ ||
     71          screen_magnifier_enabled_ ||
     72          large_cursor_enabled_ ||
     73          autoclick_enabled_;
     74 }
     75 
     76 void DefaultAccessibilityDelegate::SilenceSpokenFeedback() const {
     77 }
     78 
     79 void DefaultAccessibilityDelegate::ToggleSpokenFeedback(
     80     AccessibilityNotificationVisibility notify) {
     81   spoken_feedback_enabled_ = !spoken_feedback_enabled_;
     82 }
     83 
     84 void DefaultAccessibilityDelegate::SaveScreenMagnifierScale(double scale) {
     85 }
     86 
     87 double DefaultAccessibilityDelegate::GetSavedScreenMagnifierScale() {
     88   return std::numeric_limits<double>::min();
     89 }
     90 
     91 void DefaultAccessibilityDelegate::TriggerAccessibilityAlert(
     92     AccessibilityAlert alert) {
     93   accessibility_alert_ = alert;
     94 }
     95 
     96 AccessibilityAlert DefaultAccessibilityDelegate::GetLastAccessibilityAlert() {
     97   return accessibility_alert_;
     98 }
     99 
    100 base::TimeDelta DefaultAccessibilityDelegate::PlayShutdownSound() const {
    101   return base::TimeDelta();
    102 }
    103 
    104 }  // namespace internal
    105 }  // namespace ash
    106