loadmode.js
65 lines
| 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 | // Distributed under an MIT license: http://codemirror.net/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) { |
| 20 | var deps = CodeMirror.modes[mode].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); |
| 31 | } |
| 32 | |
| 33 | CodeMirror.requireMode = function(mode, cont) { |
| 34 | if (typeof mode != "string") mode = mode.name; |
| 35 | if (CodeMirror.modes.hasOwnProperty(mode)) return ensureDeps(mode, cont); |
| 36 | if (loading.hasOwnProperty(mode)) return loading[mode].push(cont); |
| 37 | |
| 38 | var file = CodeMirror.modeURL.replace(/%N/g, mode); |
| 39 | if (env == "plain") { |
| 40 | var script = document.createElement("script"); |
| 41 | script.src = file; |
| 42 | var others = document.getElementsByTagName("script")[0]; |
| 43 | var list = loading[mode] = [cont]; |
| 44 | CodeMirror.on(script, "load", function() { |
| 45 | ensureDeps(mode, function() { |
| 46 | for (var i = 0; i < list.length; ++i) list[i](); |
| 47 | }); |
| 48 | }); |
| 49 | others.parentNode.insertBefore(script, others); |
| 50 | } else if (env == "cjs") { |
| 51 | require(file); |
| 52 | cont(); |
| 53 | } else if (env == "amd") { |
| 54 | requirejs([file], cont); |
| 55 | } |
| 56 | }; |
| 57 | |
| 58 | CodeMirror.autoLoadMode = function(instance, mode) { |
| 59 | if (!CodeMirror.modes.hasOwnProperty(mode)) |
| 60 | CodeMirror.requireMode(mode, function() { |
| 61 | instance.setOption("mode", instance.getOption("mode")); |
| 62 | }); |
| 63 | }; |
| 64 | }); |
| 65 |