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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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_APPLICATION_LAZY_INTERFACE_PTR_H_ | 5 #ifndef MOJO_PUBLIC_CPP_APPLICATION_LAZY_INTERFACE_PTR_H_ |
6 #define MOJO_PUBLIC_CPP_APPLICATION_LAZY_INTERFACE_PTR_H_ | 6 #define MOJO_PUBLIC_CPP_APPLICATION_LAZY_INTERFACE_PTR_H_ |
7 | 7 |
8 #include <string> | |
9 | |
10 #include "mojo/public/cpp/application/connect.h" | 8 #include "mojo/public/cpp/application/connect.h" |
11 #include "mojo/public/interfaces/application/service_provider.mojom.h" | 9 #include "mojo/public/interfaces/application/service_provider.mojom.h" |
12 | 10 |
13 namespace mojo { | 11 namespace mojo { |
14 | 12 |
15 template<typename Interface> | 13 template<typename Interface> |
16 class LazyInterfacePtr : public InterfacePtr<Interface> { | 14 class LazyInterfacePtr : public InterfacePtr<Interface> { |
17 public: | 15 public: |
18 LazyInterfacePtr() : service_provider_(NULL) {} | 16 LazyInterfacePtr() : service_provider_(nullptr) {} |
19 | 17 |
20 LazyInterfacePtr(ServiceProvider* service_provider) | 18 LazyInterfacePtr(ServiceProvider* service_provider) |
21 : service_provider_(service_provider) { | 19 : service_provider_(service_provider) { |
22 } | 20 } |
23 | 21 |
24 void set_service_provider(ServiceProvider* service_provider) { | 22 void set_service_provider(ServiceProvider* service_provider) { |
25 if (service_provider != service_provider_) { | 23 if (service_provider != service_provider_) { |
26 InterfacePtr<Interface>::reset(); | 24 InterfacePtr<Interface>::reset(); |
27 } | 25 } |
28 service_provider_ = service_provider; | 26 service_provider_ = service_provider; |
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39 Interface* operator->() const { return get(); } | 37 Interface* operator->() const { return get(); } |
40 Interface& operator*() const { return *get(); } | 38 Interface& operator*() const { return *get(); } |
41 | 39 |
42 private: | 40 private: |
43 ServiceProvider* service_provider_; | 41 ServiceProvider* service_provider_; |
44 }; | 42 }; |
45 | 43 |
46 } // namespace mojo | 44 } // namespace mojo |
47 | 45 |
48 #endif // MOJO_PUBLIC_CPP_APPLICATION_LAZY_INTERFACE_PTR_H_ | 46 #endif // MOJO_PUBLIC_CPP_APPLICATION_LAZY_INTERFACE_PTR_H_ |
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