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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 part of html_common; | 5 part of html_common; |
| 6 | 6 |
| 7 /** | 7 /** |
| 8 * Utils for device detection. | 8 * Utils for device detection. |
| 9 */ | 9 */ |
| 10 class Device { | 10 class Device { |
| 11 static bool _isOpera; | 11 static bool _isOpera; |
| 12 static bool _isIE; | 12 static bool _isIE; |
| 13 static bool _isFirefox; | 13 static bool _isFirefox; |
| 14 static bool _isWebKit; | 14 static bool _isWebKit; |
| 15 static String _cachedCssPrefix; | 15 static String _cachedCssPrefix; |
| 16 static String _cachedPropertyPrefix; | 16 static String _cachedPropertyPrefix; |
| 17 | 17 |
| 18 /** | 18 /** |
| 19 * Gets the browser's user agent. Using this function allows tests to inject | 19 * Gets the browser's user agent. Using this function allows tests to inject |
| 20 * the user agent. | 20 * the user agent. |
| 21 * Returns the user agent. | 21 * Returns the user agent. |
| 22 */ | 22 */ |
| 23 static String get userAgent => window.navigator.raw.userAgent; | 23 static String get userAgent => window.navigator.userAgent; |
| 24 | 24 |
| 25 /** | 25 /** |
| 26 * Determines if the current device is running Opera. | 26 * Determines if the current device is running Opera. |
| 27 */ | 27 */ |
| 28 static bool get isOpera { | 28 static bool get isOpera { |
| 29 if (_isOpera == null) { | 29 if (_isOpera == null) { |
| 30 _isOpera = userAgent.contains("Opera", 0); | 30 _isOpera = userAgent.contains("Opera", 0); |
| 31 } | 31 } |
| 32 return _isOpera; | 32 return _isOpera; |
| 33 } | 33 } |
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| 103 */ | 103 */ |
| 104 static bool isEventTypeSupported(String eventType) { | 104 static bool isEventTypeSupported(String eventType) { |
| 105 // Browsers throw for unsupported event names. | 105 // Browsers throw for unsupported event names. |
| 106 try { | 106 try { |
| 107 var e = new Event.eventType(eventType, ''); | 107 var e = new Event.eventType(eventType, ''); |
| 108 return e is Event; | 108 return e is Event; |
| 109 } catch (_) { } | 109 } catch (_) { } |
| 110 return false; | 110 return false; |
| 111 } | 111 } |
| 112 } | 112 } |
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