| // Copyright 2015 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_ASSOCIATED_INTERFACE_REQUEST_H_ |
| #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_REQUEST_H_ |
| |
| #include <string> |
| #include <utility> |
| |
| #include "base/macros.h" |
| #include "mojo/public/cpp/bindings/scoped_interface_endpoint_handle.h" |
| |
| namespace mojo { |
| |
| // AssociatedInterfaceRequest represents an associated interface request. It is |
| // similar to InterfaceRequest except that it doesn't own a message pipe handle. |
| template <typename Interface> |
| class AssociatedInterfaceRequest { |
| public: |
| // Constructs an empty AssociatedInterfaceRequest, representing that the |
| // client is not requesting an implementation of Interface. |
| AssociatedInterfaceRequest() {} |
| AssociatedInterfaceRequest(decltype(nullptr)) {} |
| |
| explicit AssociatedInterfaceRequest(ScopedInterfaceEndpointHandle handle) |
| : handle_(std::move(handle)) {} |
| |
| // Takes the interface endpoint handle from another |
| // AssociatedInterfaceRequest. |
| AssociatedInterfaceRequest(AssociatedInterfaceRequest&& other) { |
| handle_ = std::move(other.handle_); |
| } |
| |
| AssociatedInterfaceRequest& operator=(AssociatedInterfaceRequest&& other) { |
| if (this != &other) |
| handle_ = std::move(other.handle_); |
| return *this; |
| } |
| |
| // Assigning to nullptr resets the AssociatedInterfaceRequest to an empty |
| // state, closing the interface endpoint handle currently bound to it (if |
| // any). |
| AssociatedInterfaceRequest& operator=(decltype(nullptr)) { |
| handle_.reset(); |
| return *this; |
| } |
| |
| // Indicates whether the request currently contains a valid interface endpoint |
| // handle. |
| bool is_pending() const { return handle_.is_valid(); } |
| |
| ScopedInterfaceEndpointHandle PassHandle() { return std::move(handle_); } |
| |
| const ScopedInterfaceEndpointHandle& handle() const { return handle_; } |
| |
| bool Equals(const AssociatedInterfaceRequest& other) const { |
| if (this == &other) |
| return true; |
| |
| // Now that the two refer to different objects, they are equivalent if |
| // and only if they are both invalid. |
| return !is_pending() && !other.is_pending(); |
| } |
| |
| void ResetWithReason(uint32_t custom_reason, const std::string& description) { |
| handle_.ResetWithReason(custom_reason, description); |
| } |
| |
| private: |
| ScopedInterfaceEndpointHandle handle_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AssociatedInterfaceRequest); |
| }; |
| |
| } // namespace mojo |
| |
| #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_REQUEST_H_ |