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1 // Copyright 2016 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 SERVICES_SHELL_PUBLIC_CPP_LIB_CALLBACK_BINDER_H_ | |
6 #define SERVICES_SHELL_PUBLIC_CPP_LIB_CALLBACK_BINDER_H_ | |
7 | |
8 #include <utility> | |
9 | |
10 #include "base/bind.h" | |
11 #include "mojo/public/cpp/bindings/interface_request.h" | |
12 #include "services/shell/public/cpp/interface_binder.h" | |
13 | |
14 namespace shell { | |
15 namespace internal { | |
16 | |
17 template <typename Interface> | |
18 class CallbackBinder : public InterfaceBinder { | |
19 public: | |
20 // Method that binds a request for Interface. | |
21 using BindCallback = | |
22 base::Callback<void(mojo::InterfaceRequest<Interface>)>; | |
23 | |
24 explicit CallbackBinder( | |
25 const BindCallback& callback, | |
26 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) | |
27 : callback_(callback), task_runner_(task_runner) {} | |
28 ~CallbackBinder() override {} | |
29 | |
30 private: | |
31 // InterfaceBinder: | |
32 void BindInterface( | |
33 const Identity& remote_identity, | |
34 const std::string& interface_name, | |
35 mojo::ScopedMessagePipeHandle handle) override { | |
36 mojo::InterfaceRequest<Interface> request = | |
37 mojo::MakeRequest<Interface>(std::move(handle)); | |
38 if (task_runner_) { | |
39 task_runner_->PostTask( | |
40 FROM_HERE, | |
41 base::Bind(&CallbackBinder::RunCallbackOnTaskRunner, callback_, | |
42 base::Passed(&request))); | |
43 return; | |
44 } | |
45 callback_.Run(std::move(request)); | |
46 } | |
47 | |
48 static void RunCallbackOnTaskRunner( | |
49 const BindCallback& callback, | |
50 mojo::InterfaceRequest<Interface> client) { | |
51 callback.Run(std::move(client)); | |
52 } | |
53 | |
54 const BindCallback callback_; | |
55 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
56 DISALLOW_COPY_AND_ASSIGN(CallbackBinder); | |
57 }; | |
58 | |
59 class GenericCallbackBinder : public InterfaceBinder { | |
60 public: | |
61 using BindCallback = base::Callback<void(mojo::ScopedMessagePipeHandle)>; | |
62 | |
63 explicit GenericCallbackBinder( | |
64 const BindCallback& callback, | |
65 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); | |
66 ~GenericCallbackBinder() override; | |
67 | |
68 private: | |
69 // InterfaceBinder: | |
70 void BindInterface(const shell::Identity& remote_identity, | |
71 const std::string& interface_name, | |
72 mojo::ScopedMessagePipeHandle handle) override; | |
73 | |
74 static void RunCallbackOnTaskRunner( | |
75 const BindCallback& callback, | |
76 mojo::ScopedMessagePipeHandle client_handle); | |
77 | |
78 const BindCallback callback_; | |
79 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
80 DISALLOW_COPY_AND_ASSIGN(GenericCallbackBinder); | |
81 }; | |
82 | |
83 } // namespace internal | |
84 } // namespace shell | |
85 | |
86 #endif // SERVICES_SHELL_PUBLIC_CPP_LIB_CALLBACK_BINDER_H_ | |
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