1 | 'use strict'
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2 |
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3 | function injectStyleTag (document, fileName, cb) {
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4 | var style = document.getElementById(fileName)
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5 |
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6 | if (style) {
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7 | cb(style)
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8 | } else {
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9 | var head = document.getElementsByTagName('head')[0]
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10 |
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11 | style = document.createElement('style')
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12 | if (fileName != null) style.id = fileName
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13 | cb(style)
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14 | head.appendChild(style)
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15 | }
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16 |
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17 | return style
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18 | }
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19 |
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20 | module.exports = function (css, customDocument, fileName) {
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21 | var doc = customDocument || document
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22 |
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23 | if (doc.createStyleSheet) {
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24 | var sheet = doc.createStyleSheet()
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25 | sheet.cssText = css
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26 | return sheet.ownerNode
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27 | } else {
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28 | return injectStyleTag(doc, fileName, function (style) {
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29 |
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30 | if (style.styleSheet) {
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31 | style.styleSheet.cssText = css
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32 | } else {
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33 | style.innerHTML = css
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34 | }
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35 | })
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36 | }
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37 | }
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38 |
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39 | module.exports.byUrl = function (url) {
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40 |
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41 | if (document.createStyleSheet) {
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42 | return document.createStyleSheet(url).ownerNode
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43 | } else {
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44 | var head = document.getElementsByTagName('head')[0]
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45 | var link = document.createElement('link')
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46 |
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47 | link.rel = 'stylesheet'
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48 | link.href = url
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49 |
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50 | head.appendChild(link)
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51 | return link
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52 | }
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53 | }
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