rename _assets to assets

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Former-commit-id: 6c24d30f26529457202f470620a0ea1d31772b13 [formerly 384d2af17fe100b9db91462eb41337f9dff855f4]
Former-commit-id: 94f4933e12f97ee7468c884f041612498e07ba32

assets/src/codemirror/index.js

@@ -0,0 +1,60 @@
+// Most of the code from this file comes from:
+// https://github.com/codemirror/CodeMirror/blob/master/addon/mode/loadmode.js
+import * as CodeMirror from 'codemirror'
+import store from '@/store/store'
+
+// Make CodeMirror available globally so the modes' can register themselves.
+window.CodeMirror = CodeMirror
+CodeMirror.modeURL = store.state.baseURL + '/static/js/codemirror/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 (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)
+
+  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)
+}
+
+CodeMirror.autoLoadMode = function (instance, mode) {
+  if (CodeMirror.modes.hasOwnProperty(mode)) return
+
+  CodeMirror.requireMode(mode, function () {
+    instance.setOption('mode', mode)
+  })
+}
+
+export default CodeMirror