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 "base/logging.h" 6 #include "content/browser/accessibility/accessibility_mode_helper.h" 7 8 namespace content { 9 10 namespace { 11 CastToAccessibilityMode(unsigned int int_mode)12AccessibilityMode CastToAccessibilityMode(unsigned int int_mode) { 13 AccessibilityMode mode = static_cast<AccessibilityMode>(int_mode); 14 switch (mode) { 15 case AccessibilityModeOff: 16 case AccessibilityModeComplete: 17 case AccessibilityModeEditableTextOnly: 18 case AccessibilityModeTreeOnly: 19 return mode; 20 } 21 DCHECK(false) << "Could not convert to AccessibilityMode: " << int_mode; 22 return AccessibilityModeOff; 23 } 24 25 } // namespace 26 GetBaseAccessibilityMode()27AccessibilityMode GetBaseAccessibilityMode() { 28 AccessibilityMode accessibility_mode = AccessibilityModeOff; 29 return accessibility_mode; 30 } 31 AddAccessibilityModeTo(AccessibilityMode to,AccessibilityMode mode_to_add)32AccessibilityMode AddAccessibilityModeTo(AccessibilityMode to, 33 AccessibilityMode mode_to_add) { 34 return CastToAccessibilityMode(to | mode_to_add); 35 } 36 RemoveAccessibilityModeFrom(AccessibilityMode from,AccessibilityMode mode_to_remove)37AccessibilityMode RemoveAccessibilityModeFrom( 38 AccessibilityMode from, 39 AccessibilityMode mode_to_remove) { 40 unsigned int new_mode = from ^ (mode_to_remove & from); 41 return CastToAccessibilityMode(new_mode); 42 } 43 44 } // namespace content 45