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8 |
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9 | 'use strict';
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10 |
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11 | var ExecutionEnvironment = require('fbjs/lib/ExecutionEnvironment');
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12 |
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13 |
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14 |
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15 |
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16 |
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17 |
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18 |
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19 |
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20 | function makePrefixMap(styleProp, eventName) {
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21 | var prefixes = {};
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22 |
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23 | prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
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24 | prefixes['Webkit' + styleProp] = 'webkit' + eventName;
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25 | prefixes['Moz' + styleProp] = 'moz' + eventName;
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26 | prefixes['ms' + styleProp] = 'MS' + eventName;
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27 | prefixes['O' + styleProp] = 'o' + eventName.toLowerCase();
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28 |
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29 | return prefixes;
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30 | }
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31 |
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32 |
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33 |
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34 |
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35 | var vendorPrefixes = {
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36 | animationend: makePrefixMap('Animation', 'AnimationEnd'),
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37 | animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
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38 | animationstart: makePrefixMap('Animation', 'AnimationStart'),
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39 | transitionend: makePrefixMap('Transition', 'TransitionEnd')
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40 | };
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41 |
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42 |
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43 |
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44 |
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45 | var prefixedEventNames = {};
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46 |
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47 |
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48 |
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49 |
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50 | var style = {};
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51 |
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52 |
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53 |
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54 |
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55 | if (ExecutionEnvironment.canUseDOM) {
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56 | style = document.createElement('div').style;
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57 |
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58 |
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59 |
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60 |
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61 |
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62 | if (!('AnimationEvent' in window)) {
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63 | delete vendorPrefixes.animationend.animation;
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64 | delete vendorPrefixes.animationiteration.animation;
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65 | delete vendorPrefixes.animationstart.animation;
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66 | }
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67 |
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68 |
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69 | if (!('TransitionEvent' in window)) {
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70 | delete vendorPrefixes.transitionend.transition;
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71 | }
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72 | }
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73 |
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74 |
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75 |
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76 |
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77 |
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78 |
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79 |
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80 | function getVendorPrefixedEventName(eventName) {
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81 | if (prefixedEventNames[eventName]) {
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82 | return prefixedEventNames[eventName];
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83 | } else if (!vendorPrefixes[eventName]) {
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84 | return eventName;
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85 | }
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86 |
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87 | var prefixMap = vendorPrefixes[eventName];
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88 |
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89 | for (var styleProp in prefixMap) {
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90 | if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
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91 | return prefixedEventNames[eventName] = prefixMap[styleProp];
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92 | }
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93 | }
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94 |
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95 | return '';
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96 | }
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97 |
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98 | module.exports = getVendorPrefixedEventName; |
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