| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163 | // CodeMirror, copyright (c) by Marijn Haverbeke and others// Distributed under an MIT license: https://codemirror.net/LICENSE(function(mod) {  if (typeof exports == "object" && typeof module == "object") // CommonJS    mod(require("../../lib/codemirror"), require("./foldcode"));  else if (typeof define == "function" && define.amd) // AMD    define(["../../lib/codemirror", "./foldcode"], mod);  else // Plain browser env    mod(CodeMirror);})(function(CodeMirror) {  "use strict";  CodeMirror.defineOption("foldGutter", false, function(cm, val, old) {    if (old && old != CodeMirror.Init) {      cm.clearGutter(cm.state.foldGutter.options.gutter);      cm.state.foldGutter = null;      cm.off("gutterClick", onGutterClick);      cm.off("changes", onChange);      cm.off("viewportChange", onViewportChange);      cm.off("fold", onFold);      cm.off("unfold", onFold);      cm.off("swapDoc", onChange);    }    if (val) {      cm.state.foldGutter = new State(parseOptions(val));      updateInViewport(cm);      cm.on("gutterClick", onGutterClick);      cm.on("changes", onChange);      cm.on("viewportChange", onViewportChange);      cm.on("fold", onFold);      cm.on("unfold", onFold);      cm.on("swapDoc", onChange);    }  });  var Pos = CodeMirror.Pos;  function State(options) {    this.options = options;    this.from = this.to = 0;  }  function parseOptions(opts) {    if (opts === true) opts = {};    if (opts.gutter == null) opts.gutter = "CodeMirror-foldgutter";    if (opts.indicatorOpen == null) opts.indicatorOpen = "CodeMirror-foldgutter-open";    if (opts.indicatorFolded == null) opts.indicatorFolded = "CodeMirror-foldgutter-folded";    return opts;  }  function isFolded(cm, line) {    var marks = cm.findMarks(Pos(line, 0), Pos(line + 1, 0));    for (var i = 0; i < marks.length; ++i) {      if (marks[i].__isFold) {        var fromPos = marks[i].find(-1);        if (fromPos && fromPos.line === line)          return marks[i];      }    }  }  function marker(spec) {    if (typeof spec == "string") {      var elt = document.createElement("div");      elt.className = spec + " CodeMirror-guttermarker-subtle";      return elt;    } else {      return spec.cloneNode(true);    }  }  function updateFoldInfo(cm, from, to) {    var opts = cm.state.foldGutter.options, cur = from - 1;    var minSize = cm.foldOption(opts, "minFoldSize");    var func = cm.foldOption(opts, "rangeFinder");    // we can reuse the built-in indicator element if its className matches the new state    var clsFolded = typeof opts.indicatorFolded == "string" && classTest(opts.indicatorFolded);    var clsOpen = typeof opts.indicatorOpen == "string" && classTest(opts.indicatorOpen);    cm.eachLine(from, to, function(line) {      ++cur;      var mark = null;      var old = line.gutterMarkers;      if (old) old = old[opts.gutter];      if (isFolded(cm, cur)) {        if (clsFolded && old && clsFolded.test(old.className)) return;        mark = marker(opts.indicatorFolded);      } else {        var pos = Pos(cur, 0);        var range = func && func(cm, pos);        if (range && range.to.line - range.from.line >= minSize) {          if (clsOpen && old && clsOpen.test(old.className)) return;          mark = marker(opts.indicatorOpen);        }      }      if (!mark && !old) return;      cm.setGutterMarker(line, opts.gutter, mark);    });  }  // copied from CodeMirror/src/util/dom.js  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }  function updateInViewport(cm) {    var vp = cm.getViewport(), state = cm.state.foldGutter;    if (!state) return;    cm.operation(function() {      updateFoldInfo(cm, vp.from, vp.to);    });    state.from = vp.from; state.to = vp.to;  }  function onGutterClick(cm, line, gutter) {    var state = cm.state.foldGutter;    if (!state) return;    var opts = state.options;    if (gutter != opts.gutter) return;    var folded = isFolded(cm, line);    if (folded) folded.clear();    else cm.foldCode(Pos(line, 0), opts);  }  function onChange(cm) {    var state = cm.state.foldGutter;    if (!state) return;    var opts = state.options;    state.from = state.to = 0;    clearTimeout(state.changeUpdate);    state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);  }  function onViewportChange(cm) {    var state = cm.state.foldGutter;    if (!state) return;    var opts = state.options;    clearTimeout(state.changeUpdate);    state.changeUpdate = setTimeout(function() {      var vp = cm.getViewport();      if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {        updateInViewport(cm);      } else {        cm.operation(function() {          if (vp.from < state.from) {            updateFoldInfo(cm, vp.from, state.from);            state.from = vp.from;          }          if (vp.to > state.to) {            updateFoldInfo(cm, state.to, vp.to);            state.to = vp.to;          }        });      }    }, opts.updateViewportTimeSpan || 400);  }  function onFold(cm, from) {    var state = cm.state.foldGutter;    if (!state) return;    var line = from.line;    if (line >= state.from && line < state.to)      updateFoldInfo(cm, line, line + 1);  }});
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