Progress towards refactoring

client/commonFramework/detectLoops.js

@@ -0,0 +1,57 @@
+window.common = (function(global) {
+  const {
+    jailed,
+    document: doc,
+    common = { init: [] }
+  } = global;
+
+  if (!jailed) {
+    return (code, cb) => cb(new Error('Could not load jailed plugin'));
+  }
+
+  // obtaining absolute path of this script
+  var scripts = doc.getElementsByTagName('script');
+  var path = scripts[scripts.length - 1].src
+    .split('?')[0]
+    .split('/')
+    .slice(0, -1)
+    .join('/') + '/';
+
+  var sandbox = {
+    timeoutId: null,
+
+    startTimeout() {
+      this.timeoutId = setTimeout(() => {
+        this.disconnect();
+      }, 3000);
+    },
+    endTimeout() {
+      if (this.timeoutId) {
+        clearTimeout(this.timeoutId);
+        this.timeoutId = null;
+      }
+    },
+    createPlugin() {
+      this.plugin = new jailed.Plugin(path + 'plugin.js');
+      this.plugin.whenDisconnected(() => {
+        this.endTimeout();
+      });
+    },
+    destroyPlugin() {
+      this.plugin.disconnect();
+    }
+  };
+
+
+  // sends the input to the plugin for evaluation
+  common.detectLoops = function detectLoops(code, callback) {
+    sandbox.createPlugin();
+    sandbox.plugin.whenConnected(() => {
+      this.endTimeout();
+
+      sandbox.plugin.remote.run(code, callback);
+    });
+  };
+
+  return common;
+}(window));