mojo/public/cpp/bindings/no_interface.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 MOJO_PUBLIC_CPP_BINDINGS_NO_INTERFACE_H_
   6 #define MOJO_PUBLIC_CPP_BINDINGS_NO_INTERFACE_H_
   7
   8 #include <assert.h>
   9
  10 #include "mojo/public/cpp/bindings/message.h"
  11 #include "mojo/public/cpp/system/core.h"
  12
  13 namespace mojo {
  14
  15 // NoInterface is for use in cases when a non-existent or empty interface is
  16 // needed (e.g., when the Mojom "Peer" attribute is not present).
  17
  18 class NoInterfaceProxy;
  19 class NoInterfaceStub;
  20
  21 class NoInterface {
  22  public:
  23   typedef NoInterfaceProxy Proxy_;
  24   typedef NoInterfaceStub Stub_;
  25   typedef NoInterface Client_;
  26   virtual ~NoInterface() {}
  27   virtual void SetClient(NoInterface* client) {}
  28 };
  29
  30 class NoInterfaceProxy : public NoInterface {
  31  public:
  32   explicit NoInterfaceProxy(MessageReceiver* receiver) {}
  33 };
  34
  35 class NoInterfaceStub : public MessageReceiver {
  36  public:
  37   NoInterfaceStub() {}
  38   void set_sink(NoInterface* sink) {}
  39   virtual bool Accept(Message* message) MOJO_OVERRIDE;
  40   virtual bool AcceptWithResponder(Message* message, MessageReceiver* responder)
  41       MOJO_OVERRIDE;
  42 };
  43
  44
  45 // AnyInterface is for use in cases where any interface would do (e.g., see the
  46 // Shell::Connect method).
  47
  48 typedef NoInterface AnyInterface;
  49
  50 }  // namespace mojo
  51
  52 #endif  // MOJO_PUBLIC_CPP_BINDINGS_NO_INTERFACE_H_