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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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10 mod(CodeMirror);
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11 })(function(CodeMirror) {
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12 "use strict";
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13
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14 CodeMirror.defineOption("rulers", false, function(cm, val) {
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15 if (cm.state.rulerDiv) {
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16 cm.state.rulerDiv.parentElement.removeChild(cm.state.rulerDiv)
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17 cm.state.rulerDiv = null
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18 cm.off("refresh", drawRulers)
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19 }
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20 if (val && val.length) {
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21 cm.state.rulerDiv = cm.display.lineSpace.parentElement.insertBefore(document.createElement("div"), cm.display.lineSpace)
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22 cm.state.rulerDiv.className = "CodeMirror-rulers"
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23 drawRulers(cm)
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24 cm.on("refresh", drawRulers)
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25 }
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26 });
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27
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28 function drawRulers(cm) {
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29 cm.state.rulerDiv.textContent = ""
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30 var val = cm.getOption("rulers");
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31 var cw = cm.defaultCharWidth();
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32 var left = cm.charCoords(CodeMirror.Pos(cm.firstLine(), 0), "div").left;
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33 cm.state.rulerDiv.style.minHeight = (cm.display.scroller.offsetHeight + 30) + "px";
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34 for (var i = 0; i < val.length; i++) {
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35 var elt = document.createElement("div");
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36 elt.className = "CodeMirror-ruler";
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37 var col, conf = val[i];
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38 if (typeof conf == "number") {
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39 col = conf;
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40 } else {
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41 col = conf.column;
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42 if (conf.className) elt.className += " " + conf.className;
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43 if (conf.color) elt.style.borderColor = conf.color;
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44 if (conf.lineStyle) elt.style.borderLeftStyle = conf.lineStyle;
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45 if (conf.width) elt.style.borderLeftWidth = conf.width;
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46 }
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47 elt.style.left = (left + col * cw) + "px";
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48 cm.state.rulerDiv.appendChild(elt)
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49 }
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50 }
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51 });
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