1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
// Copyright 2014 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 MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_IMPL_H_
#define MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_IMPL_H_
#include "mojo/public/cpp/bindings/lib/interface_impl_internal.h"
#include "mojo/public/cpp/system/macros.h"
namespace mojo {
// InterfaceImpl<..> is designed to be the base class of an interface
// implementation. It may be bound to a pipe or a proxy, see BindToPipe and
// BindToProxy.
//
// NOTE: A base class of WithErrorHandler<Interface> is used to avoid multiple
// inheritance. This base class inserts the signature of ErrorHandler into the
// inheritance chain.
template <typename Interface>
class InterfaceImpl : public WithErrorHandler<Interface> {
public:
InterfaceImpl() : internal_state_(this) {}
virtual ~InterfaceImpl() {}
// Subclasses must handle connection errors.
virtual void OnConnectionError() = 0;
// DO NOT USE. Exposed only for internal use and for testing.
internal::InterfaceImplState<Interface>* internal_state() {
return &internal_state_;
}
private:
internal::InterfaceImplState<Interface> internal_state_;
MOJO_DISALLOW_COPY_AND_ASSIGN(InterfaceImpl);
};
// Takes an instance of an InterfaceImpl<..> subclass and binds it to the given
// MessagePipe. The instance is returned for convenience in member initializer
// lists, etc. If the pipe is closed, the instance's OnConnectionError method
// will be called.
//
// The instance is also bound to the current thread. Its methods will only be
// called on the current thread, and if the current thread exits, then it will
// also be deleted, and along with it, its end point of the pipe will be closed.
//
// Before returning, the instance will receive a SetClient call, providing it
// with a proxy to the client on the other end of the pipe.
template <typename Impl>
Impl* BindToPipe(Impl* instance,
ScopedMessagePipeHandle handle,
MojoAsyncWaiter* waiter = GetDefaultAsyncWaiter()) {
instance->internal_state()->Bind(handle.Pass(), waiter);
return instance;
}
// Takes an instance of an InterfaceImpl<..> subclass and binds it to the given
// InterfacePtr<..>. The instance is returned for convenience in member
// initializer lists, etc. If the pipe is closed, the instance's
// OnConnectionError method will be called.
//
// The instance is also bound to the current thread. Its methods will only be
// called on the current thread, and if the current thread exits, then it will
// also be deleted, and along with it, its end point of the pipe will be closed.
//
// Before returning, the instance will receive a SetClient call, providing it
// with a proxy to the client on the other end of the pipe.
template <typename Impl, typename Interface>
Impl* BindToProxy(Impl* instance,
InterfacePtr<Interface>* ptr,
MojoAsyncWaiter* waiter = GetDefaultAsyncWaiter()) {
instance->internal_state()->BindProxy(ptr, waiter);
return instance;
}
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_IMPL_H_
|
