// CodeMirror, copyright (c) by Marijn Haverbeke and others

// Distributed under an MIT license: http://codemirror.net/LICENSE



(function(mod) {

  if (typeof exports == "object" && typeof module == "object") // CommonJS

    mod(require("../../lib/codemirror"), "cjs");

  else if (typeof define == "function" && define.amd) // AMD

    define(["../../lib/codemirror"], function(CM) { mod(CM, "amd"); });

  else // Plain browser env

    mod(CodeMirror, "plain");

})(function(CodeMirror, env) {

  if (!CodeMirror.modeURL) CodeMirror.modeURL = "../mode/%N/%N.js";



  var loading = {};

  function splitCallback(cont, n) {

    var countDown = n;

    return function() { if (--countDown == 0) cont(); };

  }

  function ensureDeps(mode, cont) {

    var deps = CodeMirror.modes[mode].dependencies;

    if (!deps) return cont();

    var missing = [];

    for (var i = 0; i < deps.length; ++i) {

      if (!CodeMirror.modes.hasOwnProperty(deps[i]))

        missing.push(deps[i]);

    }

    if (!missing.length) return cont();

    var split = splitCallback(cont, missing.length);

    for (var i = 0; i < missing.length; ++i)

      CodeMirror.requireMode(missing[i], split);

  }



  CodeMirror.requireMode = function(mode, cont) {

    if (typeof mode != "string") mode = mode.name;

    if (CodeMirror.modes.hasOwnProperty(mode)) return ensureDeps(mode, cont);

    if (loading.hasOwnProperty(mode)) return loading[mode].push(cont);



    var file = CodeMirror.modeURL.replace(/%N/g, mode);

    if (env == "plain") {

      var script = document.createElement("script");

      script.src = file;

      var others = document.getElementsByTagName("script")[0];

      var list = loading[mode] = [cont];

      CodeMirror.on(script, "load", function() {

        ensureDeps(mode, function() {

          for (var i = 0; i < list.length; ++i) list[i]();

        });

      });

      others.parentNode.insertBefore(script, others);

    } else if (env == "cjs") {

      require(file);

      cont();

    } else if (env == "amd") {

      requirejs([file], cont);

    }

  };



  CodeMirror.autoLoadMode = function(instance, mode) {

    if (!CodeMirror.modes.hasOwnProperty(mode))

      CodeMirror.requireMode(mode, function() {

        instance.setOption("mode", instance.getOption("mode"));

      });

  };

});

