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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_BINDING_H_ | 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_BINDING_H_ |
6 #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_BINDING_H_ | 6 #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_BINDING_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
10 #include "mojo/public/cpp/bindings/associated_group.h" | 10 #include "mojo/public/cpp/bindings/associated_group.h" |
11 #include "mojo/public/cpp/bindings/associated_interface_request.h" | 11 #include "mojo/public/cpp/bindings/associated_interface_request.h" |
12 #include "mojo/public/cpp/bindings/callback.h" | 12 #include "mojo/public/cpp/bindings/callback.h" |
13 #include "mojo/public/cpp/bindings/lib/interface_endpoint_client.h" | 13 #include "mojo/public/cpp/bindings/lib/interface_endpoint_client.h" |
14 #include "mojo/public/cpp/bindings/lib/multiplex_router.h" | 14 #include "mojo/public/cpp/bindings/lib/multiplex_router.h" |
15 #include "mojo/public/cpp/bindings/lib/scoped_interface_endpoint_handle.h" | 15 #include "mojo/public/cpp/bindings/lib/scoped_interface_endpoint_handle.h" |
16 | 16 |
17 namespace mojo { | 17 namespace mojo { |
18 | 18 |
19 // Represents the implementation side of an associated interface. It is similar | 19 // Represents the implementation side of an associated interface. It is similar |
20 // to Binding, except that it doesn't own a message pipe handle. | 20 // to Binding, except that it doesn't own a message pipe handle. |
21 template <typename Interface> | 21 template <typename Interface> |
22 class AssociatedBinding { | 22 class AssociatedBinding { |
23 public: | 23 public: |
| 24 using GenericInterface = typename Interface::GenericInterface; |
| 25 |
24 // Constructs an incomplete associated binding that will use the | 26 // Constructs an incomplete associated binding that will use the |
25 // implementation |impl|. It may be completed with a subsequent call to the | 27 // implementation |impl|. It may be completed with a subsequent call to the |
26 // |Bind| method. Does not take ownership of |impl|, which must outlive this | 28 // |Bind| method. Does not take ownership of |impl|, which must outlive this |
27 // object. | 29 // object. |
28 explicit AssociatedBinding(Interface* impl) : impl_(impl) { | 30 explicit AssociatedBinding(Interface* impl) : impl_(impl) { |
29 stub_.set_sink(impl_); | 31 stub_.set_sink(impl_); |
30 } | 32 } |
31 | 33 |
32 // Constructs a completed associated binding of |impl|. The output |ptr_info| | 34 // Constructs a completed associated binding of |impl|. The output |ptr_info| |
33 // should be passed through the message pipe endpoint referred to by | 35 // should be passed through the message pipe endpoint referred to by |
34 // |associated_group| to setup the corresponding asssociated interface | 36 // |associated_group| to setup the corresponding asssociated interface |
35 // pointer. |impl| must outlive this object. | 37 // pointer. |impl| must outlive this object. |
36 AssociatedBinding(Interface* impl, | 38 AssociatedBinding(Interface* impl, |
37 AssociatedInterfacePtrInfo<Interface>* ptr_info, | 39 AssociatedInterfacePtrInfo<GenericInterface>* ptr_info, |
38 AssociatedGroup* associated_group) | 40 AssociatedGroup* associated_group) |
39 : AssociatedBinding(impl) { | 41 : AssociatedBinding(impl) { |
40 Bind(ptr_info, associated_group); | 42 Bind(ptr_info, associated_group); |
41 } | 43 } |
42 | 44 |
43 // Constructs a completed associated binding of |impl|. |impl| must outlive | 45 // Constructs a completed associated binding of |impl|. |impl| must outlive |
44 // the binding. | 46 // the binding. |
45 AssociatedBinding(Interface* impl, | 47 AssociatedBinding(Interface* impl, |
46 AssociatedInterfaceRequest<Interface> request) | 48 AssociatedInterfaceRequest<GenericInterface> request) |
47 : AssociatedBinding(impl) { | 49 : AssociatedBinding(impl) { |
48 Bind(request.Pass()); | 50 Bind(request.Pass()); |
49 } | 51 } |
50 | 52 |
51 ~AssociatedBinding() {} | 53 ~AssociatedBinding() {} |
52 | 54 |
53 // Creates an associated inteface and sets up this object as the | 55 // Creates an associated inteface and sets up this object as the |
54 // implementation side. The output |ptr_info| should be passed through the | 56 // implementation side. The output |ptr_info| should be passed through the |
55 // message pipe endpoint referred to by |associated_group| to setup the | 57 // message pipe endpoint referred to by |associated_group| to setup the |
56 // corresponding asssociated interface pointer. | 58 // corresponding asssociated interface pointer. |
57 void Bind(AssociatedInterfacePtrInfo<Interface>* ptr_info, | 59 void Bind(AssociatedInterfacePtrInfo<GenericInterface>* ptr_info, |
58 AssociatedGroup* associated_group) { | 60 AssociatedGroup* associated_group) { |
59 AssociatedInterfaceRequest<Interface> request; | 61 AssociatedInterfaceRequest<Interface> request; |
60 associated_group->CreateAssociatedInterface(AssociatedGroup::WILL_PASS_PTR, | 62 associated_group->CreateAssociatedInterface(AssociatedGroup::WILL_PASS_PTR, |
61 ptr_info, &request); | 63 ptr_info, &request); |
62 Bind(request.Pass()); | 64 Bind(request.Pass()); |
63 } | 65 } |
64 | 66 |
65 // Sets up this object as the implementation side of an associated interface. | 67 // Sets up this object as the implementation side of an associated interface. |
66 void Bind(AssociatedInterfaceRequest<Interface> request) { | 68 void Bind(AssociatedInterfaceRequest<GenericInterface> request) { |
67 internal::ScopedInterfaceEndpointHandle handle = | 69 internal::ScopedInterfaceEndpointHandle handle = |
68 internal::AssociatedInterfaceRequestHelper::PassHandle(&request); | 70 internal::AssociatedInterfaceRequestHelper::PassHandle(&request); |
69 | 71 |
70 DCHECK(handle.is_local()) | 72 DCHECK(handle.is_local()) |
71 << "The AssociatedInterfaceRequest is supposed to be used at the " | 73 << "The AssociatedInterfaceRequest is supposed to be used at the " |
72 << "other side of the message pipe."; | 74 << "other side of the message pipe."; |
73 | 75 |
74 if (!handle.is_valid() || !handle.is_local()) { | 76 if (!handle.is_valid() || !handle.is_local()) { |
75 endpoint_client_.reset(); | 77 endpoint_client_.reset(); |
76 return; | 78 return; |
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88 // Closes the associated interface. Puts this object into a state where it can | 90 // Closes the associated interface. Puts this object into a state where it can |
89 // be rebound. | 91 // be rebound. |
90 void Close() { | 92 void Close() { |
91 DCHECK(endpoint_client_); | 93 DCHECK(endpoint_client_); |
92 endpoint_client_.reset(); | 94 endpoint_client_.reset(); |
93 } | 95 } |
94 | 96 |
95 // Unbinds and returns the associated interface request so it can be | 97 // Unbinds and returns the associated interface request so it can be |
96 // used in another context, such as on another thread or with a different | 98 // used in another context, such as on another thread or with a different |
97 // implementation. Puts this object into a state where it can be rebound. | 99 // implementation. Puts this object into a state where it can be rebound. |
98 AssociatedInterfaceRequest<Interface> Unbind() { | 100 AssociatedInterfaceRequest<GenericInterface> Unbind() { |
99 DCHECK(endpoint_client_); | 101 DCHECK(endpoint_client_); |
100 | 102 |
101 AssociatedInterfaceRequest<Interface> request; | 103 AssociatedInterfaceRequest<GenericInterface> request; |
102 internal::AssociatedInterfaceRequestHelper::SetHandle( | 104 internal::AssociatedInterfaceRequestHelper::SetHandle( |
103 &request, endpoint_client_->PassHandle()); | 105 &request, endpoint_client_->PassHandle()); |
104 | 106 |
105 endpoint_client_.reset(); | 107 endpoint_client_.reset(); |
106 | 108 |
107 return request.Pass(); | 109 return request.Pass(); |
108 } | 110 } |
109 | 111 |
110 // Sets an error handler that will be called if a connection error occurs. | 112 // Sets an error handler that will be called if a connection error occurs. |
111 void set_connection_error_handler(const Closure& error_handler) { | 113 void set_connection_error_handler(const Closure& error_handler) { |
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130 typename Interface::Stub_ stub_; | 132 typename Interface::Stub_ stub_; |
131 Interface* impl_; | 133 Interface* impl_; |
132 Closure connection_error_handler_; | 134 Closure connection_error_handler_; |
133 | 135 |
134 DISALLOW_COPY_AND_ASSIGN(AssociatedBinding); | 136 DISALLOW_COPY_AND_ASSIGN(AssociatedBinding); |
135 }; | 137 }; |
136 | 138 |
137 } // namespace mojo | 139 } // namespace mojo |
138 | 140 |
139 #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_BINDING_H_ | 141 #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_BINDING_H_ |
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