1 files changed, 51 insertions, 0 deletions

diff --git a/imports/codemirror/lib/util/loadmode.js b/imports/codemirror/lib/util/loadmode.js
new file mode 100644
index 00000000..48d5a7ab
--- /dev/null
+++ b/imports/codemirror/lib/util/loadmode.js
@@ -0,0 +1,51 @@
+(function() {
+  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 script = document.createElement("script");
+    script.src = CodeMirror.modeURL.replace(/%N/g, mode);
+    var others = document.getElementsByTagName("script")[0];
+    others.parentNode.insertBefore(script, others);
+    var list = loading[mode] = [cont];
+    var count = 0, poll = setInterval(function() {
+      if (++count > 100) return clearInterval(poll);
+      if (CodeMirror.modes.hasOwnProperty(mode)) {
+        clearInterval(poll);
+        loading[mode] = null;
+        ensureDeps(mode, function() {
+          for (var i = 0; i < list.length; ++i) list[i]();
+        });
+      }
+    }, 200);
+  };
+
+  CodeMirror.autoLoadMode = function(instance, mode) {
+    if (!CodeMirror.modes.hasOwnProperty(mode))
+      CodeMirror.requireMode(mode, function() {
+        instance.setOption("mode", instance.getOption("mode"));
+      });
+  };
+}());