Issue 154 - Added devtools panel showing blocked and blockable items

chrome/ext/background.js

Index: chrome/ext/background.js
===================================================================
--- a/chrome/ext/background.js
+++ b/chrome/ext/background.js
@@ -591,4 +591,41 @@
       });
     });
   };
+
+
+  /* Devtools panel */
+
+  var Panel = function(inspectedTabId, port)
+  {
+    this.inspectedTabId = inspectedTabId;
+    this._port = port;
+  };
+  Panel.prototype = {
+    sendMessage: function(message)
+    {
+      this._port.postMessage(message);
+    },
+    get onRemoved()
+    {
+      return this._port.onDisconnect;
+    }
+  };
+
+  ext.devtools = {
+    onCreated: new ext._EventTarget()
+  };
+
+  // If this code should ever be removed, note that we still have to
+  // ensure that there is at least one listener for the onConnect event.
+  // Otherwise we can't connect a port later, in order to detect when
+  // the extension is reloaded,disabled or uninstalled.
+  chrome.runtime.onConnect.addListener(function(port)
+  {
+    var match = port.name.match(/^devtools-(\d+)$/);
+    if (match)
+    {
+      var panel = new Panel(parseInt(match[1], 10), port);
+      ext.devtools.onCreated._dispatch(panel);
+    }
+  });
 })();