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Side by Side Diff: mojo/public/cpp/bindings/strong_binding.h

Issue 728043002: Revert of Update mojo sdk to rev afb4440fd5a10cba980878c326180b7ad7960480 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 1 month ago
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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_STRONG_BINDING_H_
6 #define MOJO_PUBLIC_CPP_BINDINGS_STRONG_BINDING_H_
7
8 #include "mojo/public/c/environment/async_waiter.h"
9 #include "mojo/public/cpp/bindings/binding.h"
10 #include "mojo/public/cpp/bindings/error_handler.h"
11 #include "mojo/public/cpp/bindings/interface_ptr.h"
12 #include "mojo/public/cpp/bindings/interface_request.h"
13 #include "mojo/public/cpp/bindings/lib/filter_chain.h"
14 #include "mojo/public/cpp/bindings/lib/message_header_validator.h"
15 #include "mojo/public/cpp/bindings/lib/router.h"
16 #include "mojo/public/cpp/system/core.h"
17
18 namespace mojo {
19
20 // This connects an interface implementation strongly to a pipe. When a
21 // connection error is detected the implementation is deleted. Deleting the
22 // connector also closes the pipe.
23 //
24 // Example of an implementation that is always bound strongly to a pipe
25 //
26 // class StronglyBound : public Foo {
27 // public:
28 // explicit StronglyBound(ScopedMessagePipeHandle handle)
29 // : binding_(this, handle.Pass()) {}
30 //
31 // // Foo implementation here
32 //
33 // private:
34 // StrongBinding<Foo> binding_;
35 // };
36 //
37 template <typename Interface>
38 class StrongBinding : public ErrorHandler {
39 public:
40 explicit StrongBinding(Interface* impl) : binding_(impl) {
41 binding_.set_error_handler(this);
42 }
43
44 StrongBinding(
45 Interface* impl,
46 ScopedMessagePipeHandle handle,
47 const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter())
48 : StrongBinding(impl) {
49 binding_.Bind(handle.Pass(), waiter);
50 }
51
52 StrongBinding(
53 Interface* impl,
54 InterfaceRequest<Interface> request,
55 const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter())
56 : StrongBinding(impl) {
57 binding_.Bind(request.Pass(), waiter);
58 }
59
60 ~StrongBinding() override {}
61
62 bool WaitForIncomingMethodCall() {
63 return binding_.WaitForIncomingMethodCall();
64 }
65
66 void set_error_handler(ErrorHandler* error_handler) {
67 error_handler_ = error_handler;
68 }
69
70 typename Interface::Client* client() { return binding_.client(); }
71 // Exposed for testing, should not generally be used.
72 internal::Router* internal_router() { return binding_.internal_router(); }
73
74 // ErrorHandler implementation
75 void OnConnectionError() override {
76 if (error_handler_)
77 error_handler_->OnConnectionError();
78 delete binding_.impl();
79 }
80
81 private:
82 ErrorHandler* error_handler_ = nullptr;
83 Binding<Interface> binding_;
84 };
85
86 } // namespace mojo
87
88 #endif // MOJO_PUBLIC_CPP_BINDINGS_STRONG_BINDING_H_
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