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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/LICENSE
   3  
   4  (function(mod) {
   5    if (typeof exports == "object" && typeof module == "object") // CommonJS
   6      mod(require("../../lib/codemirror"), "cjs");
   7    else if (typeof define == "function" && define.amd) // AMD
   8      define(["../../lib/codemirror"], function(CM) { mod(CM, "amd"); });
   9    else // Plain browser env
  10      mod(CodeMirror, "plain");
  11  })(function(CodeMirror, env) {
  12    if (!CodeMirror.modeURL) CodeMirror.modeURL = "../mode/%N/%N.js";
  13  
  14    var loading = {};
  15    function splitCallback(cont, n) {
  16      var countDown = n;
  17      return function() { if (--countDown == 0) cont(); };
  18    }
  19    function ensureDeps(mode, cont, options) {
  20      var modeObj = CodeMirror.modes[mode], deps = modeObj && modeObj.dependencies;
  21      if (!deps) return cont();
  22      var missing = [];
  23      for (var i = 0; i < deps.length; ++i) {
  24        if (!CodeMirror.modes.hasOwnProperty(deps[i]))
  25          missing.push(deps[i]);
  26      }
  27      if (!missing.length) return cont();
  28      var split = splitCallback(cont, missing.length);
  29      for (var i = 0; i < missing.length; ++i)
  30        CodeMirror.requireMode(missing[i], split, options);
  31    }
  32  
  33    CodeMirror.requireMode = function(mode, cont, options) {
  34      if (typeof mode != "string") mode = mode.name;
  35      if (CodeMirror.modes.hasOwnProperty(mode)) return ensureDeps(mode, cont, options);
  36      if (loading.hasOwnProperty(mode)) return loading[mode].push(cont);
  37  
  38      var file = options && options.path ? options.path(mode) : CodeMirror.modeURL.replace(/%N/g, mode);
  39      if (options && options.loadMode) {
  40        options.loadMode(file, function() { ensureDeps(mode, cont, options) })
  41      } else if (env == "plain") {
  42        var script = document.createElement("script");
  43        script.src = file;
  44        var others = document.getElementsByTagName("script")[0];
  45        var list = loading[mode] = [cont];
  46        CodeMirror.on(script, "load", function() {
  47          ensureDeps(mode, function() {
  48            for (var i = 0; i < list.length; ++i) list[i]();
  49          }, options);
  50        });
  51        others.parentNode.insertBefore(script, others);
  52      } else if (env == "cjs") {
  53        require(file);
  54        cont();
  55      } else if (env == "amd") {
  56        requirejs([file], cont);
  57      }
  58    };
  59  
  60    CodeMirror.autoLoadMode = function(instance, mode, options) {
  61      if (!CodeMirror.modes.hasOwnProperty(mode))
  62        CodeMirror.requireMode(mode, function() {
  63          instance.setOption("mode", instance.getOption("mode"));
  64        }, options);
  65    };
  66  });