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 "content/browser/accessibility/accessibility_mode_helper.h" 6 7 #if defined(OS_WIN) 8 #include "base/command_line.h" 9 #include "base/win/windows_version.h" 10 #include "content/public/common/content_switches.h" 11 #endif 12 13 namespace content { 14 15 namespace { 16 CastToAccessibilityMode(unsigned int int_mode)17AccessibilityMode CastToAccessibilityMode(unsigned int int_mode) { 18 AccessibilityMode mode = static_cast<AccessibilityMode>(int_mode); 19 switch (mode) { 20 case AccessibilityModeOff: 21 case AccessibilityModeComplete: 22 case AccessibilityModeEditableTextOnly: 23 case AccessibilityModeTreeOnly: 24 return mode; 25 } 26 DCHECK(false) << "Could not convert to AccessibilityMode: " << int_mode; 27 return AccessibilityModeOff; 28 } 29 30 } // namespace 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 #if defined(OS_WIN) 42 // On Windows 8, always enable accessibility for editable text controls 43 // so we can show the virtual keyboard when one is enabled. 44 if (base::win::GetVersion() >= base::win::VERSION_WIN8 && 45 !CommandLine::ForCurrentProcess()->HasSwitch( 46 switches::kDisableRendererAccessibility)) { 47 if ((from & AccessibilityModeEditableTextOnly) == 48 AccessibilityModeEditableTextOnly) 49 new_mode |= AccessibilityModeEditableTextOnly; 50 } 51 #endif // defined(OS_WIN) 52 53 return CastToAccessibilityMode(new_mode); 54 } 55 56 } // namespace content 57