Implementation of AutomationEventQueue and associated framework to support generic non-blocking aut…

chrome/browser/automation/automation_event_observer.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_AUTOMATION_AUTOMATION_EVENT_OBSERVER_H_
+#define CHROME_BROWSER_AUTOMATION_AUTOMATION_EVENT_OBSERVER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+#include "chrome/browser/automation/automation_provider_observers.h"
+#include "chrome/browser/automation/automation_event_queue.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+// AutomationEventObserver watches for a specific event, and pushes an
+// AutomationEvent into the AutomationEventQueue for each occurance.
+class AutomationEventObserver {
+ public:
+  explicit AutomationEventObserver(AutomationEventQueue* event_queue);
+  virtual ~AutomationEventObserver();
+
+  void Init(int observer_id);
+  void NotifyEvent(DictionaryValue* value);
+  int GetId() const;
+
+ private:
+  AutomationEventQueue* event_queue_;
+  int observer_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutomationEventObserver);
+};
+
+// AutomationEventObserver implementation that listens for explicitly raised
+// events. A webpage currently raises events by calling:
+// window.domAutomationController.setAutomationId(42); // Any integer works.
+// window.domAutomationController("EVENT_NAME");
+// TODO(craigdh): This method is a temporary hack.
+class DomRaisedEventObserver
+    : public AutomationEventObserver, public DomOperationObserver {
+ public:
+  DomRaisedEventObserver(AutomationEventQueue* event_queue,
+                         const std::string& event_name);
+  virtual ~DomRaisedEventObserver();
+
+  virtual void OnDomOperationCompleted(const std::string& json) OVERRIDE;
+  virtual void OnModalDialogShown() OVERRIDE;
+  virtual void OnJavascriptBlocked() OVERRIDE;
+
+ private:
+  std::string event_name_;
+  content::NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(DomRaisedEventObserver);
+};
+
+#endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_EVENT_OBSERVER_H_