ipc/message_filter_router.h

   1 // Copyright 2014 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 IPC_MESSAGE_FILTER_ROUTER_H_
   6 #define IPC_MESSAGE_FILTER_ROUTER_H_
   7
   8 #include <vector>
   9
  10 #include "ipc/ipc_message_start.h"
  11
  12 namespace IPC {
  13
  14 class Message;
  15 class MessageFilter;
  16
  17 class MessageFilterRouter {
  18  public:
  19   typedef std::vector<MessageFilter*> MessageFilters;
  20
  21   MessageFilterRouter();
  22   ~MessageFilterRouter();
  23
  24   void AddFilter(MessageFilter* filter);
  25   void RemoveFilter(MessageFilter* filter);
  26   bool TryFilters(const Message& message);
  27   void Clear();
  28
  29  private:
  30   // List of global and selective filters; a given filter will exist in either
  31   // |message_global_filters_| OR |message_class_filters_|, but not both.
  32   // Note that |message_global_filters_| will be given first offering of any
  33   // given message.  It's the filter implementer and installer's
  34   // responsibility to ensure that a filter is either global or selective to
  35   // ensure proper message filtering order.
  36   MessageFilters global_filters_;
  37   MessageFilters message_class_filters_[LastIPCMsgStart];
  38 };
  39
  40 }  // namespace IPC
  41
  42 #endif  // IPC_MESSAGE_FILTER_ROUTER_H_