Fix CascadeStudio integration

resolves #95

web/src/helpers/cascadeController.js

@@ -0,0 +1,25 @@
+import { initialize, getEditor } from 'src/cascade/js/MainPage/CascadeMain'
+
+class CascadeController {
+  _hasInitialised = false
+  incomingOnCodeChang = () => {}
+  controllerOnCodeChange = (code) => {
+    this.incomingOnCodeChang(code)
+  }
+
+  initialise(onCodeChange, code) {
+    // only inits on first call, after that it just updates the editor and revaluates code, maybe should rename?
+    this.incomingOnCodeChang = onCodeChange
+    if (!this._hasInitialised) {
+      initialize(this.controllerOnCodeChange, code)
+      this._hasInitialised = true
+      return
+    }
+    const editor = getEditor()
+    editor.setValue(code)
+    editor.evaluateCode(false)
+    return this.domNode
+  }
+}
+
+export default new CascadeController()