55 lines
1.7 KiB
JavaScript
Vendored
55 lines
1.7 KiB
JavaScript
Vendored
(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, old) {
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if (old && old != CodeMirror.Init) {
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clearRulers(cm);
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cm.off("refresh", refreshRulers);
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}
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if (val && val.length) {
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setRulers(cm);
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cm.on("refresh", refreshRulers);
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}
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});
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function clearRulers(cm) {
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for (var i = cm.display.lineSpace.childNodes.length - 1; i >= 0; i--) {
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var node = cm.display.lineSpace.childNodes[i];
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if (/(^|\s)CodeMirror-ruler($|\s)/.test(node.className))
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node.parentNode.removeChild(node);
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}
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}
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function setRulers(cm) {
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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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var bot = -cm.display.scroller.offsetHeight;
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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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var col, cls = null;
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if (typeof val[i] == "number") {
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col = val[i];
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} else {
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col = val[i].column;
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cls = val[i].className;
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}
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elt.className = "CodeMirror-ruler" + (cls ? " " + cls : "");
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elt.style.cssText = "left: " + (left + col * cw) + "px; top: -50px; bottom: " + bot + "px";
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cm.display.lineSpace.insertBefore(elt, cm.display.cursorDiv);
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}
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}
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function refreshRulers(cm) {
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clearRulers(cm);
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setRulers(cm);
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}
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});
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