extensions/browser/extension_host_observer.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_EXTENSION_HOST_OBSERVER_H_
   6 #define EXTENSIONS_BROWSER_EXTENSION_HOST_OBSERVER_H_
   7
   8 #include <string>
   9
  10 namespace extensions {
  11 class ExtensionHost;
  12
  13 class ExtensionHostObserver {
  14  public:
  15   virtual ~ExtensionHostObserver() {}
  16
  17   // Called when an ExtensionHost is destroyed.
  18   virtual void OnExtensionHostDestroyed(const ExtensionHost* host) {}
  19
  20   // Called when a message has been disptached to the RenderView corresponding
  21   // to |host|.
  22   virtual void OnExtensionMessageDispatched(const ExtensionHost* host,
  23                                             const std::string& event_name,
  24                                             int message_id) {}
  25
  26   // Called when a previously dispatched message has been acked by the
  27   // RenderView for |host|.
  28   virtual void OnExtensionMessageAcked(const ExtensionHost* host,
  29                                        int message_id) {}
  30
  31   // Called when the extension associated with |host| starts a new network
  32   // request.
  33   virtual void OnNetworkRequestStarted(const ExtensionHost* host,
  34                                        uint64 request_id) {}
  35
  36   // Called when the network request with |request_id| is done.
  37   virtual void OnNetworkRequestDone(const ExtensionHost* host,
  38                                     uint64 request_id) {}
  39 };
  40
  41 }  // namespace extensions
  42
  43 #endif /* EXTENSIONS_BROWSER_EXTENSION_HOST_OBSERVER_H_ */