1 | (function () {
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2 |
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3 | if (typeof Prism === 'undefined' || typeof document === 'undefined' || !Function.prototype.bind) {
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4 | return;
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5 | }
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6 |
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7 | var previewers = {
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8 |
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9 | 'gradient': {
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10 | create: (function () {
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11 |
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12 |
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13 |
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14 | var cache = {};
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15 |
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16 | |
17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 | var convertToW3CLinearGradient = function (prefix, func, values) {
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24 |
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25 | var angle = '180deg';
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26 |
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27 | if (/^(?:-?(?:\d+(?:\.\d+)?|\.\d+)(?:deg|rad)|to\b|top|right|bottom|left)/.test(values[0])) {
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28 | angle = values.shift();
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29 | if (angle.indexOf('to ') < 0) {
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30 |
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31 |
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32 | if (angle.indexOf('top') >= 0) {
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33 | if (angle.indexOf('left') >= 0) {
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34 | angle = 'to bottom right';
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35 | } else if (angle.indexOf('right') >= 0) {
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36 | angle = 'to bottom left';
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37 | } else {
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38 | angle = 'to bottom';
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39 | }
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40 | } else if (angle.indexOf('bottom') >= 0) {
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41 | if (angle.indexOf('left') >= 0) {
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42 | angle = 'to top right';
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43 | } else if (angle.indexOf('right') >= 0) {
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44 | angle = 'to top left';
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45 | } else {
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46 | angle = 'to top';
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47 | }
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48 | } else if (angle.indexOf('left') >= 0) {
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49 | angle = 'to right';
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50 | } else if (angle.indexOf('right') >= 0) {
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51 | angle = 'to left';
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52 | } else if (prefix) {
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53 |
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54 | if (angle.indexOf('deg') >= 0) {
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55 | angle = (90 - parseFloat(angle)) + 'deg';
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56 | } else if (angle.indexOf('rad') >= 0) {
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57 | angle = (Math.PI / 2 - parseFloat(angle)) + 'rad';
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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 |
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63 | return func + '(' + angle + ',' + values.join(',') + ')';
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64 | };
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65 |
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66 | |
67 |
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68 |
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69 |
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70 |
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71 |
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72 |
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73 | var convertToW3CRadialGradient = function (prefix, func, values) {
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74 | if (values[0].indexOf('at') < 0) {
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75 |
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76 |
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77 |
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78 | var position = 'center';
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79 | var shape = 'ellipse';
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80 | var size = 'farthest-corner';
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81 |
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82 | if (/\b(?:bottom|center|left|right|top)\b|^\d+/.test(values[0])) {
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83 |
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84 |
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85 | position = values.shift().replace(/\s*-?\d+(?:deg|rad)\s*/, '');
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86 | }
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87 | if (/\b(?:circle|closest|contain|cover|ellipse|farthest)\b/.test(values[0])) {
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88 |
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89 | var shapeSizeParts = values.shift().split(/\s+/);
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90 | if (shapeSizeParts[0] && (shapeSizeParts[0] === 'circle' || shapeSizeParts[0] === 'ellipse')) {
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91 | shape = shapeSizeParts.shift();
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92 | }
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93 | if (shapeSizeParts[0]) {
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94 | size = shapeSizeParts.shift();
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95 | }
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96 |
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97 |
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98 | if (size === 'cover') {
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99 | size = 'farthest-corner';
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100 | } else if (size === 'contain') {
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101 | size = 'clothest-side';
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102 | }
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103 | }
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104 |
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105 | return func + '(' + shape + ' ' + size + ' at ' + position + ',' + values.join(',') + ')';
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106 | }
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107 | return func + '(' + values.join(',') + ')';
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108 | };
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109 |
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110 | |
111 |
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112 |
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113 |
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114 |
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115 |
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116 | var convertToW3CGradient = function (gradient) {
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117 | if (cache[gradient]) {
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118 | return cache[gradient];
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119 | }
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120 | var parts = gradient.match(/^(\b|\B-[a-z]{1,10}-)((?:repeating-)?(?:linear|radial)-gradient)/);
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121 |
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122 | var prefix = parts && parts[1];
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123 |
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124 | var func = parts && parts[2];
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125 |
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126 | var values = gradient.replace(/^(?:\b|\B-[a-z]{1,10}-)(?:repeating-)?(?:linear|radial)-gradient\(|\)$/g, '').split(/\s*,\s*/);
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127 |
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128 | if (func.indexOf('linear') >= 0) {
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129 | return cache[gradient] = convertToW3CLinearGradient(prefix, func, values);
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130 | } else if (func.indexOf('radial') >= 0) {
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131 | return cache[gradient] = convertToW3CRadialGradient(prefix, func, values);
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132 | }
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133 | return cache[gradient] = func + '(' + values.join(',') + ')';
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134 | };
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135 |
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136 | return function () {
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137 | new Prism.plugins.Previewer('gradient', function (value) {
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138 | this.firstChild.style.backgroundImage = '';
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139 | this.firstChild.style.backgroundImage = convertToW3CGradient(value);
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140 | return !!this.firstChild.style.backgroundImage;
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141 | }, '*', function () {
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142 | this._elt.innerHTML = '<div></div>';
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143 | });
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144 | };
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145 | }()),
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146 | tokens: {
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147 | 'gradient': {
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148 | pattern: /(?:\b|\B-[a-z]{1,10}-)(?:repeating-)?(?:linear|radial)-gradient\((?:(?:hsl|rgb)a?\(.+?\)|[^\)])+\)/gi,
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149 | inside: {
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150 | 'function': /[\w-]+(?=\()/,
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151 | 'punctuation': /[(),]/
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152 | }
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153 | }
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154 | },
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155 | languages: {
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156 | 'css': true,
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157 | 'less': true,
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158 | 'sass': [
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159 | {
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160 | lang: 'sass',
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161 | before: 'punctuation',
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162 | inside: 'inside',
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163 | root: Prism.languages.sass && Prism.languages.sass['variable-line']
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164 | },
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165 | {
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166 | lang: 'sass',
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167 | before: 'punctuation',
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168 | inside: 'inside',
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169 | root: Prism.languages.sass && Prism.languages.sass['property-line']
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170 | }
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171 | ],
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172 | 'scss': true,
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173 | 'stylus': [
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174 | {
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175 | lang: 'stylus',
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176 | before: 'func',
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177 | inside: 'rest',
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178 | root: Prism.languages.stylus && Prism.languages.stylus['property-declaration'].inside
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179 | },
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180 | {
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181 | lang: 'stylus',
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182 | before: 'func',
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183 | inside: 'rest',
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184 | root: Prism.languages.stylus && Prism.languages.stylus['variable-declaration'].inside
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185 | }
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186 | ]
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187 | }
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188 | },
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189 | 'angle': {
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190 | create: function () {
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191 | new Prism.plugins.Previewer('angle', function (value) {
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192 | var num = parseFloat(value);
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193 | var unit = value.match(/[a-z]+$/i);
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194 | var max; var percentage;
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195 | if (!num || !unit) {
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196 | return false;
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197 | }
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198 | unit = unit[0];
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199 |
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200 | switch (unit) {
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201 | case 'deg':
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202 | max = 360;
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203 | break;
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204 | case 'grad':
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205 | max = 400;
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206 | break;
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207 | case 'rad':
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208 | max = 2 * Math.PI;
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209 | break;
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210 | case 'turn':
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211 | max = 1;
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212 | }
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213 |
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214 | percentage = 100 * num / max;
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215 | percentage %= 100;
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216 |
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217 | this[(num < 0 ? 'set' : 'remove') + 'Attribute']('data-negative', '');
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218 | this.querySelector('circle').style.strokeDasharray = Math.abs(percentage) + ',500';
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219 | return true;
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220 | }, '*', function () {
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221 | this._elt.innerHTML = '<svg viewBox="0 0 64 64">' +
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222 | '<circle r="16" cy="32" cx="32"></circle>' +
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223 | '</svg>';
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224 | });
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225 | },
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226 | tokens: {
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227 | 'angle': /(?:\b|\B-|(?=\B\.))(?:\d+(?:\.\d+)?|\.\d+)(?:deg|g?rad|turn)\b/i
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228 | },
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229 | languages: {
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230 | 'css': true,
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231 | 'less': true,
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232 | 'markup': {
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233 | lang: 'markup',
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234 | before: 'punctuation',
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235 | inside: 'inside',
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236 | root: Prism.languages.markup && Prism.languages.markup['tag'].inside['attr-value']
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237 | },
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238 | 'sass': [
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239 | {
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240 | lang: 'sass',
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241 | inside: 'inside',
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242 | root: Prism.languages.sass && Prism.languages.sass['property-line']
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243 | },
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244 | {
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245 | lang: 'sass',
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246 | before: 'operator',
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247 | inside: 'inside',
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248 | root: Prism.languages.sass && Prism.languages.sass['variable-line']
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249 | }
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250 | ],
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251 | 'scss': true,
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252 | 'stylus': [
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253 | {
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254 | lang: 'stylus',
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255 | before: 'func',
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256 | inside: 'rest',
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257 | root: Prism.languages.stylus && Prism.languages.stylus['property-declaration'].inside
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258 | },
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259 | {
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260 | lang: 'stylus',
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261 | before: 'func',
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262 | inside: 'rest',
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263 | root: Prism.languages.stylus && Prism.languages.stylus['variable-declaration'].inside
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264 | }
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265 | ]
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266 | }
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267 | },
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268 | 'color': {
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269 | create: function () {
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270 | new Prism.plugins.Previewer('color', function (value) {
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271 | this.style.backgroundColor = '';
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272 | this.style.backgroundColor = value;
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273 | return !!this.style.backgroundColor;
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274 | });
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275 | },
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276 | tokens: {
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277 | 'color': [Prism.languages.css['hexcode']].concat(Prism.languages.css['color'])
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278 | },
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279 | languages: {
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280 |
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281 | 'css': false,
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282 | 'less': true,
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283 | 'markup': {
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284 | lang: 'markup',
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285 | before: 'punctuation',
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286 | inside: 'inside',
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287 | root: Prism.languages.markup && Prism.languages.markup['tag'].inside['attr-value']
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288 | },
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289 | 'sass': [
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290 | {
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291 | lang: 'sass',
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292 | before: 'punctuation',
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293 | inside: 'inside',
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294 | root: Prism.languages.sass && Prism.languages.sass['variable-line']
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295 | },
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296 | {
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297 | lang: 'sass',
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298 | inside: 'inside',
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299 | root: Prism.languages.sass && Prism.languages.sass['property-line']
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300 | }
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301 | ],
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302 | 'scss': false,
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303 | 'stylus': [
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304 | {
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305 | lang: 'stylus',
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306 | before: 'hexcode',
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307 | inside: 'rest',
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308 | root: Prism.languages.stylus && Prism.languages.stylus['property-declaration'].inside
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309 | },
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310 | {
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311 | lang: 'stylus',
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312 | before: 'hexcode',
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313 | inside: 'rest',
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314 | root: Prism.languages.stylus && Prism.languages.stylus['variable-declaration'].inside
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315 | }
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316 | ]
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317 | }
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318 | },
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319 | 'easing': {
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320 | create: function () {
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321 | new Prism.plugins.Previewer('easing', function (value) {
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322 |
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323 | value = {
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324 | 'linear': '0,0,1,1',
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325 | 'ease': '.25,.1,.25,1',
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326 | 'ease-in': '.42,0,1,1',
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327 | 'ease-out': '0,0,.58,1',
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328 | 'ease-in-out': '.42,0,.58,1'
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329 | }[value] || value;
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330 |
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331 | var p = value.match(/-?(?:\d+(?:\.\d+)?|\.\d+)/g);
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332 |
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333 | if (p.length === 4) {
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334 | p = p.map(function (p, i) { return (i % 2 ? 1 - p : p) * 100; });
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335 |
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336 | this.querySelector('path').setAttribute('d', 'M0,100 C' + p[0] + ',' + p[1] + ', ' + p[2] + ',' + p[3] + ', 100,0');
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337 |
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338 | var lines = this.querySelectorAll('line');
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339 | lines[0].setAttribute('x2', p[0]);
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340 | lines[0].setAttribute('y2', p[1]);
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341 | lines[1].setAttribute('x2', p[2]);
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342 | lines[1].setAttribute('y2', p[3]);
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343 |
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344 | return true;
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345 | }
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346 |
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347 | return false;
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348 | }, '*', function () {
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349 | this._elt.innerHTML = '<svg viewBox="-20 -20 140 140" width="100" height="100">' +
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350 | '<defs>' +
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351 | '<marker id="prism-previewer-easing-marker" viewBox="0 0 4 4" refX="2" refY="2" markerUnits="strokeWidth">' +
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352 | '<circle cx="2" cy="2" r="1.5" />' +
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353 | '</marker>' +
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354 | '</defs>' +
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355 | '<path d="M0,100 C20,50, 40,30, 100,0" />' +
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356 | '<line x1="0" y1="100" x2="20" y2="50" marker-start="url(#prism-previewer-easing-marker)" marker-end="url(#prism-previewer-easing-marker)" />' +
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357 | '<line x1="100" y1="0" x2="40" y2="30" marker-start="url(#prism-previewer-easing-marker)" marker-end="url(#prism-previewer-easing-marker)" />' +
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358 | '</svg>';
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359 | });
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360 | },
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361 | tokens: {
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362 | 'easing': {
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363 | pattern: /\bcubic-bezier\((?:-?(?:\d+(?:\.\d+)?|\.\d+),\s*){3}-?(?:\d+(?:\.\d+)?|\.\d+)\)\B|\b(?:ease(?:-in)?(?:-out)?|linear)(?=\s|[;}]|$)/i,
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364 | inside: {
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365 | 'function': /[\w-]+(?=\()/,
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366 | 'punctuation': /[(),]/
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367 | }
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368 | }
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369 | },
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370 | languages: {
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371 | 'css': true,
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372 | 'less': true,
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373 | 'sass': [
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374 | {
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375 | lang: 'sass',
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376 | inside: 'inside',
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377 | before: 'punctuation',
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378 | root: Prism.languages.sass && Prism.languages.sass['variable-line']
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379 | },
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380 | {
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381 | lang: 'sass',
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382 | inside: 'inside',
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383 | root: Prism.languages.sass && Prism.languages.sass['property-line']
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384 | }
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385 | ],
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386 | 'scss': true,
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387 | 'stylus': [
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388 | {
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389 | lang: 'stylus',
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390 | before: 'hexcode',
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391 | inside: 'rest',
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392 | root: Prism.languages.stylus && Prism.languages.stylus['property-declaration'].inside
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393 | },
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394 | {
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395 | lang: 'stylus',
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396 | before: 'hexcode',
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397 | inside: 'rest',
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398 | root: Prism.languages.stylus && Prism.languages.stylus['variable-declaration'].inside
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399 | }
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400 | ]
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401 | }
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402 | },
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403 |
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404 | 'time': {
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405 | create: function () {
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406 | new Prism.plugins.Previewer('time', function (value) {
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407 | var num = parseFloat(value);
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408 | var unit = value.match(/[a-z]+$/i);
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409 | if (!num || !unit) {
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410 | return false;
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411 | }
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412 | unit = unit[0];
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413 | this.querySelector('circle').style.animationDuration = 2 * num + unit;
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414 | return true;
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415 | }, '*', function () {
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416 | this._elt.innerHTML = '<svg viewBox="0 0 64 64">' +
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417 | '<circle r="16" cy="32" cx="32"></circle>' +
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418 | '</svg>';
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419 | });
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420 | },
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421 | tokens: {
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422 | 'time': /(?:\b|\B-|(?=\B\.))(?:\d+(?:\.\d+)?|\.\d+)m?s\b/i
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423 | },
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424 | languages: {
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425 | 'css': true,
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426 | 'less': true,
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427 | 'markup': {
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428 | lang: 'markup',
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429 | before: 'punctuation',
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430 | inside: 'inside',
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431 | root: Prism.languages.markup && Prism.languages.markup['tag'].inside['attr-value']
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432 | },
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433 | 'sass': [
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434 | {
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435 | lang: 'sass',
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436 | inside: 'inside',
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437 | root: Prism.languages.sass && Prism.languages.sass['property-line']
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438 | },
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439 | {
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440 | lang: 'sass',
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441 | before: 'operator',
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442 | inside: 'inside',
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443 | root: Prism.languages.sass && Prism.languages.sass['variable-line']
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444 | }
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445 | ],
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446 | 'scss': true,
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447 | 'stylus': [
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448 | {
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449 | lang: 'stylus',
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450 | before: 'hexcode',
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451 | inside: 'rest',
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452 | root: Prism.languages.stylus && Prism.languages.stylus['property-declaration'].inside
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453 | },
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454 | {
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455 | lang: 'stylus',
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456 | before: 'hexcode',
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457 | inside: 'rest',
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458 | root: Prism.languages.stylus && Prism.languages.stylus['variable-declaration'].inside
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459 | }
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460 | ]
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461 | }
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462 | }
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463 | };
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464 |
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465 | |
466 |
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467 |
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468 |
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469 |
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470 |
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471 | var getOffset = function (element) {
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472 | var elementBounds = element.getBoundingClientRect();
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473 | var left = elementBounds.left;
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474 | var top = elementBounds.top;
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475 | var documentBounds = document.documentElement.getBoundingClientRect();
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476 | left -= documentBounds.left;
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477 | top -= documentBounds.top;
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478 |
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479 | return {
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480 | top: top,
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481 | right: innerWidth - left - elementBounds.width,
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482 | bottom: innerHeight - top - elementBounds.height,
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483 | left: left,
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484 | width: elementBounds.width,
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485 | height: elementBounds.height
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486 | };
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487 | };
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488 |
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489 | var TOKEN_CLASS = 'token';
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490 | var ACTIVE_CLASS = 'active';
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491 | var FLIPPED_CLASS = 'flipped';
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492 |
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493 | |
494 |
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495 |
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496 |
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497 |
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498 |
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499 |
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500 |
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501 |
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502 | var Previewer = function (type, updater, supportedLanguages, initializer) {
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503 | this._elt = null;
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504 | this._type = type;
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505 | this._token = null;
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506 | this.updater = updater;
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507 | this._mouseout = this.mouseout.bind(this);
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508 | this.initializer = initializer;
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509 |
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510 | var self = this;
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511 |
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512 | if (!supportedLanguages) {
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513 | supportedLanguages = ['*'];
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514 | }
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515 | if (!Array.isArray(supportedLanguages)) {
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516 | supportedLanguages = [supportedLanguages];
|
517 | }
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518 | supportedLanguages.forEach(function (lang) {
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519 | if (typeof lang !== 'string') {
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520 | lang = lang.lang;
|
521 | }
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522 | if (!Previewer.byLanguages[lang]) {
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523 | Previewer.byLanguages[lang] = [];
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524 | }
|
525 | if (Previewer.byLanguages[lang].indexOf(self) < 0) {
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526 | Previewer.byLanguages[lang].push(self);
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527 | }
|
528 | });
|
529 | Previewer.byType[type] = this;
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530 | };
|
531 |
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532 | |
533 |
|
534 |
|
535 | Previewer.prototype.init = function () {
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536 | if (this._elt) {
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537 | return;
|
538 | }
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539 | this._elt = document.createElement('div');
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540 | this._elt.className = 'prism-previewer prism-previewer-' + this._type;
|
541 | document.body.appendChild(this._elt);
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542 | if (this.initializer) {
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543 | this.initializer();
|
544 | }
|
545 | };
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546 |
|
547 | |
548 |
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549 |
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550 |
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551 | Previewer.prototype.isDisabled = function (token) {
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552 | do {
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553 | if (token.hasAttribute && token.hasAttribute('data-previewers')) {
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554 | var previewers = token.getAttribute('data-previewers');
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555 | return (previewers || '').split(/\s+/).indexOf(this._type) === -1;
|
556 | }
|
557 | } while ((token = token.parentNode));
|
558 | return false;
|
559 | };
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560 |
|
561 | |
562 |
|
563 |
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564 |
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565 |
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566 | Previewer.prototype.check = function (token) {
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567 | if (token.classList.contains(TOKEN_CLASS) && this.isDisabled(token)) {
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568 | return;
|
569 | }
|
570 | do {
|
571 | if (token.classList && token.classList.contains(TOKEN_CLASS) && token.classList.contains(this._type)) {
|
572 | break;
|
573 | }
|
574 | } while ((token = token.parentNode));
|
575 |
|
576 | if (token && token !== this._token) {
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577 | this._token = token;
|
578 | this.show();
|
579 | }
|
580 | };
|
581 |
|
582 | |
583 |
|
584 |
|
585 | Previewer.prototype.mouseout = function () {
|
586 | this._token.removeEventListener('mouseout', this._mouseout, false);
|
587 | this._token = null;
|
588 | this.hide();
|
589 | };
|
590 |
|
591 | |
592 |
|
593 |
|
594 | Previewer.prototype.show = function () {
|
595 | if (!this._elt) {
|
596 | this.init();
|
597 | }
|
598 | if (!this._token) {
|
599 | return;
|
600 | }
|
601 |
|
602 | if (this.updater.call(this._elt, this._token.textContent)) {
|
603 | this._token.addEventListener('mouseout', this._mouseout, false);
|
604 |
|
605 | var offset = getOffset(this._token);
|
606 | this._elt.classList.add(ACTIVE_CLASS);
|
607 |
|
608 | if (offset.top - this._elt.offsetHeight > 0) {
|
609 | this._elt.classList.remove(FLIPPED_CLASS);
|
610 | this._elt.style.top = offset.top + 'px';
|
611 | this._elt.style.bottom = '';
|
612 | } else {
|
613 | this._elt.classList.add(FLIPPED_CLASS);
|
614 | this._elt.style.bottom = offset.bottom + 'px';
|
615 | this._elt.style.top = '';
|
616 | }
|
617 |
|
618 | this._elt.style.left = offset.left + Math.min(200, offset.width / 2) + 'px';
|
619 | } else {
|
620 | this.hide();
|
621 | }
|
622 | };
|
623 |
|
624 | |
625 |
|
626 |
|
627 | Previewer.prototype.hide = function () {
|
628 | this._elt.classList.remove(ACTIVE_CLASS);
|
629 | };
|
630 |
|
631 | |
632 |
|
633 |
|
634 |
|
635 |
|
636 | Previewer.byLanguages = {};
|
637 |
|
638 | |
639 |
|
640 |
|
641 |
|
642 |
|
643 | Previewer.byType = {};
|
644 |
|
645 | |
646 |
|
647 |
|
648 |
|
649 |
|
650 |
|
651 | Previewer.initEvents = function (elt, lang) {
|
652 | var previewers = [];
|
653 | if (Previewer.byLanguages[lang]) {
|
654 | previewers = previewers.concat(Previewer.byLanguages[lang]);
|
655 | }
|
656 | if (Previewer.byLanguages['*']) {
|
657 | previewers = previewers.concat(Previewer.byLanguages['*']);
|
658 | }
|
659 | elt.addEventListener('mouseover', function (e) {
|
660 | var target = e.target;
|
661 | previewers.forEach(function (previewer) {
|
662 | previewer.check(target);
|
663 | });
|
664 | }, false);
|
665 | };
|
666 | Prism.plugins.Previewer = Previewer;
|
667 |
|
668 | Prism.hooks.add('before-highlight', function (env) {
|
669 | for (var previewer in previewers) {
|
670 | var languages = previewers[previewer].languages;
|
671 | if (env.language && languages[env.language] && !languages[env.language].initialized) {
|
672 | var lang = languages[env.language];
|
673 | if (!Array.isArray(lang)) {
|
674 | lang = [lang];
|
675 | }
|
676 | lang.forEach(function (lang) {
|
677 | var before; var inside; var root; var skip;
|
678 | if (lang === true) {
|
679 | before = 'important';
|
680 | inside = env.language;
|
681 | lang = env.language;
|
682 | } else {
|
683 | before = lang.before || 'important';
|
684 | inside = lang.inside || lang.lang;
|
685 | root = lang.root || Prism.languages;
|
686 | skip = lang.skip;
|
687 | lang = env.language;
|
688 | }
|
689 |
|
690 | if (!skip && Prism.languages[lang]) {
|
691 | Prism.languages.insertBefore(inside, before, previewers[previewer].tokens, root);
|
692 | env.grammar = Prism.languages[lang];
|
693 |
|
694 | languages[env.language] = { initialized: true };
|
695 | }
|
696 | });
|
697 | }
|
698 | }
|
699 | });
|
700 |
|
701 |
|
702 | Prism.hooks.add('after-highlight', function (env) {
|
703 | if (Previewer.byLanguages['*'] || Previewer.byLanguages[env.language]) {
|
704 | Previewer.initEvents(env.element, env.language);
|
705 | }
|
706 | });
|
707 |
|
708 | for (var previewer in previewers) {
|
709 | previewers[previewer].create();
|
710 | }
|
711 |
|
712 | }());
|