1 | (function () {
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2 |
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3 | if (typeof Prism === 'undefined' || typeof document === 'undefined') {
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4 | return;
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5 | }
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6 |
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7 | if (!Prism.plugins.toolbar) {
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8 | console.warn('Copy to Clipboard plugin loaded before Toolbar plugin.');
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9 |
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10 | return;
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11 | }
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12 |
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13 | |
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 |
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21 |
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22 |
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23 |
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24 | function registerClipboard(element, copyInfo) {
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25 | element.addEventListener('click', function () {
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26 | copyTextToClipboard(copyInfo);
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27 | });
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28 | }
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29 |
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30 |
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31 |
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32 |
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33 | function fallbackCopyTextToClipboard(copyInfo) {
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34 | var textArea = document.createElement('textarea');
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35 | textArea.value = copyInfo.getText();
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36 |
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37 |
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38 | textArea.style.top = '0';
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39 | textArea.style.left = '0';
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40 | textArea.style.position = 'fixed';
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41 |
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42 | document.body.appendChild(textArea);
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43 | textArea.focus();
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44 | textArea.select();
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45 |
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46 | try {
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47 | var successful = document.execCommand('copy');
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48 | setTimeout(function () {
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49 | if (successful) {
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50 | copyInfo.success();
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51 | } else {
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52 | copyInfo.error();
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53 | }
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54 | }, 1);
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55 | } catch (err) {
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56 | setTimeout(function () {
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57 | copyInfo.error(err);
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58 | }, 1);
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59 | }
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60 |
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61 | document.body.removeChild(textArea);
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62 | }
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63 |
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64 | function copyTextToClipboard(copyInfo) {
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65 | if (navigator.clipboard) {
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66 | navigator.clipboard.writeText(copyInfo.getText()).then(copyInfo.success, function () {
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67 |
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68 | fallbackCopyTextToClipboard(copyInfo);
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69 | });
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70 | } else {
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71 | fallbackCopyTextToClipboard(copyInfo);
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72 | }
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73 | }
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74 |
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75 | |
76 |
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77 |
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78 |
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79 |
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80 | function selectElementText(element) {
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81 |
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82 | window.getSelection().selectAllChildren(element);
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83 | }
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84 |
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85 | |
86 |
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87 |
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88 |
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89 |
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90 |
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91 |
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92 | function getSettings(startElement) {
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93 |
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94 | var settings = {
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95 | 'copy': 'Copy',
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96 | 'copy-error': 'Press Ctrl+C to copy',
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97 | 'copy-success': 'Copied!',
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98 | 'copy-timeout': 5000
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99 | };
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100 |
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101 | var prefix = 'data-prismjs-';
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102 | for (var key in settings) {
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103 | var attr = prefix + key;
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104 | var element = startElement;
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105 | while (element && !element.hasAttribute(attr)) {
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106 | element = element.parentElement;
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107 | }
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108 | if (element) {
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109 | settings[key] = element.getAttribute(attr);
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110 | }
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111 | }
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112 | return settings;
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113 | }
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114 |
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115 | Prism.plugins.toolbar.registerButton('copy-to-clipboard', function (env) {
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116 | var element = env.element;
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117 |
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118 | var settings = getSettings(element);
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119 |
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120 | var linkCopy = document.createElement('button');
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121 | linkCopy.className = 'copy-to-clipboard-button';
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122 | linkCopy.setAttribute('type', 'button');
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123 | var linkSpan = document.createElement('span');
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124 | linkCopy.appendChild(linkSpan);
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125 |
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126 | setState('copy');
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127 |
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128 | registerClipboard(linkCopy, {
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129 | getText: function () {
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130 | return element.textContent;
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131 | },
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132 | success: function () {
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133 | setState('copy-success');
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134 |
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135 | resetText();
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136 | },
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137 | error: function () {
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138 | setState('copy-error');
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139 |
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140 | setTimeout(function () {
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141 | selectElementText(element);
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142 | }, 1);
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143 |
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144 | resetText();
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145 | }
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146 | });
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147 |
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148 | return linkCopy;
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149 |
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150 | function resetText() {
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151 | setTimeout(function () { setState('copy'); }, settings['copy-timeout']);
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152 | }
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153 |
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154 |
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155 | function setState(state) {
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156 | linkSpan.textContent = settings[state];
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157 | linkCopy.setAttribute('data-copy-state', state);
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158 | }
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159 | });
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160 | }());
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