node_modules

1 files changed, 100 insertions, 0 deletions

diff --git a/node_modules/react-dom/lib/getVendorPrefixedEventName.js b/node_modules/react-dom/lib/getVendorPrefixedEventName.js
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+/**
+ * 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');
+
+/**
+ * Generate a mapping of standard vendor prefixes using the defined style property and event name.
+ *
+ * @param {string} styleProp
+ * @param {string} eventName
+ * @returns {object}
+ */
+function makePrefixMap(styleProp, eventName) {
+  var prefixes = {};
+
+  prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
+  prefixes['Webkit' + styleProp] = 'webkit' + eventName;
+  prefixes['Moz' + styleProp] = 'moz' + eventName;
+  prefixes['ms' + styleProp] = 'MS' + eventName;
+  prefixes['O' + styleProp] = 'o' + eventName.toLowerCase();
+
+  return prefixes;
+}
+
+/**
+ * A list of event names to a configurable list of vendor prefixes.
+ */
+var vendorPrefixes = {
+  animationend: makePrefixMap('Animation', 'AnimationEnd'),
+  animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
+  animationstart: makePrefixMap('Animation', 'AnimationStart'),
+  transitionend: makePrefixMap('Transition', 'TransitionEnd')
+};
+
+/**
+ * Event names that have already been detected and prefixed (if applicable).
+ */
+var prefixedEventNames = {};
+
+/**
+ * Element to check for prefixes on.
+ */
+var style = {};
+
+/**
+ * Bootstrap if a DOM exists.
+ */
+if (ExecutionEnvironment.canUseDOM) {
+  style = document.createElement('div').style;
+
+  // On some platforms, in particular some releases of Android 4.x,
+  // the un-prefixed "animation" and "transition" properties are defined on the
+  // style object but the events that fire will still be prefixed, so we need
+  // to check if the un-prefixed events are usable, and if not remove them from the map.
+  if (!('AnimationEvent' in window)) {
+    delete vendorPrefixes.animationend.animation;
+    delete vendorPrefixes.animationiteration.animation;
+    delete vendorPrefixes.animationstart.animation;
+  }
+
+  // Same as above
+  if (!('TransitionEvent' in window)) {
+    delete vendorPrefixes.transitionend.transition;
+  }
+}
+
+/**
+ * Attempts to determine the correct vendor prefixed event name.
+ *
+ * @param {string} eventName
+ * @returns {string}
+ */
+function getVendorPrefixedEventName(eventName) {
+  if (prefixedEventNames[eventName]) {
+    return prefixedEventNames[eventName];
+  } else if (!vendorPrefixes[eventName]) {
+    return eventName;
+  }
+
+  var prefixMap = vendorPrefixes[eventName];
+
+  for (var styleProp in prefixMap) {
+    if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
+      return prefixedEventNames[eventName] = prefixMap[styleProp];
+    }
+  }
+
+  return '';
+}
+
+module.exports = getVendorPrefixedEventName;
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