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Diffstat (limited to 'node_modules/react-dom/lib/isEventSupported.js')
-rw-r--r-- | node_modules/react-dom/lib/isEventSupported.js | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/node_modules/react-dom/lib/isEventSupported.js b/node_modules/react-dom/lib/isEventSupported.js deleted file mode 100644 index f80d7ebe6..000000000 --- a/node_modules/react-dom/lib/isEventSupported.js +++ /dev/null @@ -1,59 +0,0 @@ -/** - * Copyright 2013-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - * - */ - -'use strict'; - -var ExecutionEnvironment = require('fbjs/lib/ExecutionEnvironment'); - -var useHasFeature; -if (ExecutionEnvironment.canUseDOM) { - useHasFeature = document.implementation && document.implementation.hasFeature && - // always returns true in newer browsers as per the standard. - // @see http://dom.spec.whatwg.org/#dom-domimplementation-hasfeature - document.implementation.hasFeature('', '') !== true; -} - -/** - * Checks if an event is supported in the current execution environment. - * - * NOTE: This will not work correctly for non-generic events such as `change`, - * `reset`, `load`, `error`, and `select`. - * - * Borrows from Modernizr. - * - * @param {string} eventNameSuffix Event name, e.g. "click". - * @param {?boolean} capture Check if the capture phase is supported. - * @return {boolean} True if the event is supported. - * @internal - * @license Modernizr 3.0.0pre (Custom Build) | MIT - */ -function isEventSupported(eventNameSuffix, capture) { - if (!ExecutionEnvironment.canUseDOM || capture && !('addEventListener' in document)) { - return false; - } - - var eventName = 'on' + eventNameSuffix; - var isSupported = eventName in document; - - if (!isSupported) { - var element = document.createElement('div'); - element.setAttribute(eventName, 'return;'); - isSupported = typeof element[eventName] === 'function'; - } - - if (!isSupported && useHasFeature && eventNameSuffix === 'wheel') { - // This is the only way to test support for the `wheel` event in IE9+. - isSupported = document.implementation.hasFeature('Events.wheel', '3.0'); - } - - return isSupported; -} - -module.exports = isEventSupported;
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