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52 lines
1.9 KiB
JavaScript
52 lines
1.9 KiB
JavaScript
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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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mod(require("../../lib/codemirror"));
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else if (typeof define == "function" && define.amd) // AMD
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define(["../../lib/codemirror"], mod);
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else // Plain browser env
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mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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CodeMirror.defineOption("rulers", false, function(cm, val) {
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if (cm.state.rulerDiv) {
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cm.state.rulerDiv.parentElement.removeChild(cm.state.rulerDiv)
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cm.state.rulerDiv = null
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cm.off("refresh", drawRulers)
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}
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if (val && val.length) {
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cm.state.rulerDiv = cm.display.lineSpace.parentElement.insertBefore(document.createElement("div"), cm.display.lineSpace)
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cm.state.rulerDiv.className = "CodeMirror-rulers"
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drawRulers(cm)
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cm.on("refresh", drawRulers)
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}
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});
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function drawRulers(cm) {
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cm.state.rulerDiv.textContent = ""
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var val = cm.getOption("rulers");
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var cw = cm.defaultCharWidth();
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var left = cm.charCoords(CodeMirror.Pos(cm.firstLine(), 0), "div").left;
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cm.state.rulerDiv.style.minHeight = (cm.display.scroller.offsetHeight + 30) + "px";
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for (var i = 0; i < val.length; i++) {
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var elt = document.createElement("div");
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elt.className = "CodeMirror-ruler";
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var col, conf = val[i];
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if (typeof conf == "number") {
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col = conf;
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} else {
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col = conf.column;
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if (conf.className) elt.className += " " + conf.className;
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if (conf.color) elt.style.borderColor = conf.color;
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if (conf.lineStyle) elt.style.borderLeftStyle = conf.lineStyle;
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if (conf.width) elt.style.borderLeftWidth = conf.width;
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}
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elt.style.left = (left + col * cw) + "px";
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cm.state.rulerDiv.appendChild(elt)
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}
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}
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});
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