loadmode.js 2.0 KB

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  1. (function(mod) {
  2. if (typeof exports == "object" && typeof module == "object") // CommonJS
  3. mod(require("../../lib/codemirror"));
  4. else if (typeof define == "function" && define.amd) // AMD
  5. define(["../../lib/codemirror"], mod);
  6. else // Plain browser env
  7. mod(CodeMirror);
  8. })(function(CodeMirror) {
  9. if (!CodeMirror.modeURL) CodeMirror.modeURL = "../mode/%N/%N.js";
  10. var loading = {};
  11. function splitCallback(cont, n) {
  12. var countDown = n;
  13. return function() { if (--countDown == 0) cont(); };
  14. }
  15. function ensureDeps(mode, cont) {
  16. var deps = CodeMirror.modes[mode].dependencies;
  17. if (!deps) return cont();
  18. var missing = [];
  19. for (var i = 0; i < deps.length; ++i) {
  20. if (!CodeMirror.modes.hasOwnProperty(deps[i]))
  21. missing.push(deps[i]);
  22. }
  23. if (!missing.length) return cont();
  24. var split = splitCallback(cont, missing.length);
  25. for (var i = 0; i < missing.length; ++i)
  26. CodeMirror.requireMode(missing[i], split);
  27. }
  28. CodeMirror.requireMode = function(mode, cont) {
  29. if (typeof mode != "string") mode = mode.name;
  30. if (CodeMirror.modes.hasOwnProperty(mode)) return ensureDeps(mode, cont);
  31. if (loading.hasOwnProperty(mode)) return loading[mode].push(cont);
  32. var script = document.createElement("script");
  33. script.src = CodeMirror.modeURL.replace(/%N/g, mode);
  34. var others = document.getElementsByTagName("script")[0];
  35. others.parentNode.insertBefore(script, others);
  36. var list = loading[mode] = [cont];
  37. var count = 0, poll = setInterval(function() {
  38. if (++count > 100) return clearInterval(poll);
  39. if (CodeMirror.modes.hasOwnProperty(mode)) {
  40. clearInterval(poll);
  41. loading[mode] = null;
  42. ensureDeps(mode, function() {
  43. for (var i = 0; i < list.length; ++i) list[i]();
  44. });
  45. }
  46. }, 200);
  47. };
  48. CodeMirror.autoLoadMode = function(instance, mode) {
  49. if (!CodeMirror.modes.hasOwnProperty(mode))
  50. CodeMirror.requireMode(mode, function() {
  51. instance.setOption("mode", instance.getOption("mode"));
  52. });
  53. };
  54. });