135 lines
4.3 KiB
JavaScript
Executable File
135 lines
4.3 KiB
JavaScript
Executable File
// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://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"), require("./foldcode"));
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else if (typeof define == "function" && define.amd) // AMD
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define(["../../lib/codemirror", "./foldcode"], 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("foldGutter", false, function(cm, val, old) {
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if (old && old != CodeMirror.Init) {
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cm.clearGutter(cm.state.foldGutter.options.gutter);
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cm.state.foldGutter = null;
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cm.off("gutterClick", onGutterClick);
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cm.off("change", onChange);
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cm.off("viewportChange", onViewportChange);
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cm.off("fold", onFold);
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cm.off("unfold", onFold);
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cm.off("swapDoc", updateInViewport);
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}
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if (val) {
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cm.state.foldGutter = new State(parseOptions(val));
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updateInViewport(cm);
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cm.on("gutterClick", onGutterClick);
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cm.on("change", onChange);
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cm.on("viewportChange", onViewportChange);
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cm.on("fold", onFold);
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cm.on("unfold", onFold);
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cm.on("swapDoc", updateInViewport);
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}
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});
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var Pos = CodeMirror.Pos;
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function State(options) {
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this.options = options;
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this.from = this.to = 0;
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}
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function parseOptions(opts) {
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if (opts === true) opts = {};
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if (opts.gutter == null) opts.gutter = "CodeMirror-foldgutter";
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if (opts.indicatorOpen == null) opts.indicatorOpen = "CodeMirror-foldgutter-open";
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if (opts.indicatorFolded == null) opts.indicatorFolded = "CodeMirror-foldgutter-folded";
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return opts;
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}
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function isFolded(cm, line) {
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var marks = cm.findMarksAt(Pos(line));
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for (var i = 0; i < marks.length; ++i)
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if (marks[i].__isFold && marks[i].find().from.line == line) return true;
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}
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function marker(spec) {
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if (typeof spec == "string") {
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var elt = document.createElement("div");
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elt.className = spec + " CodeMirror-guttermarker-subtle";
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return elt;
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} else {
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return spec.cloneNode(true);
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}
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}
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function updateFoldInfo(cm, from, to) {
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var opts = cm.state.foldGutter.options, cur = from;
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cm.eachLine(from, to, function(line) {
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var mark = null;
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if (isFolded(cm, cur)) {
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mark = marker(opts.indicatorFolded);
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} else {
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var pos = Pos(cur, 0), func = opts.rangeFinder || CodeMirror.fold.auto;
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var range = func && func(cm, pos);
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if (range && range.from.line + 1 < range.to.line)
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mark = marker(opts.indicatorOpen);
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}
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cm.setGutterMarker(line, opts.gutter, mark);
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++cur;
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});
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}
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function updateInViewport(cm) {
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var vp = cm.getViewport(), state = cm.state.foldGutter;
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if (!state) return;
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cm.operation(function() {
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updateFoldInfo(cm, vp.from, vp.to);
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});
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state.from = vp.from; state.to = vp.to;
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}
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function onGutterClick(cm, line, gutter) {
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var opts = cm.state.foldGutter.options;
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if (gutter != opts.gutter) return;
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cm.foldCode(Pos(line, 0), opts.rangeFinder);
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}
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function onChange(cm) {
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var state = cm.state.foldGutter, opts = cm.state.foldGutter.options;
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state.from = state.to = 0;
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clearTimeout(state.changeUpdate);
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state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);
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}
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function onViewportChange(cm) {
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var state = cm.state.foldGutter, opts = cm.state.foldGutter.options;
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clearTimeout(state.changeUpdate);
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state.changeUpdate = setTimeout(function() {
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var vp = cm.getViewport();
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if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
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updateInViewport(cm);
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} else {
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cm.operation(function() {
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if (vp.from < state.from) {
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updateFoldInfo(cm, vp.from, state.from);
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state.from = vp.from;
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}
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if (vp.to > state.to) {
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updateFoldInfo(cm, state.to, vp.to);
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state.to = vp.to;
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}
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});
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}
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}, opts.updateViewportTimeSpan || 400);
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}
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function onFold(cm, from) {
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var state = cm.state.foldGutter, line = from.line;
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if (line >= state.from && line < state.to)
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updateFoldInfo(cm, line, line + 1);
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}
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});
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