| // Copyright 2013 The Flutter 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 FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_PLATFORM_MESSAGE_RESPONSE_H_ |
| #define FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_PLATFORM_MESSAGE_RESPONSE_H_ |
| |
| #include "flutter/fml/macros.h" |
| #include "flutter/fml/task_runner.h" |
| #include "flutter/lib/ui/window/platform_message_response.h" |
| |
| namespace flutter { |
| |
| //------------------------------------------------------------------------------ |
| /// @brief The platform message response subclass for responses to messages |
| /// from the embedder to the framework. Message responses are |
| /// fulfilled by the framework. |
| class EmbedderPlatformMessageResponse : public PlatformMessageResponse { |
| public: |
| using Callback = std::function<void(const uint8_t* data, size_t size)>; |
| |
| //---------------------------------------------------------------------------- |
| /// @param[in] runner The task runner on which to execute the callback. |
| /// The response will be initiated by the framework on |
| /// the UI thread. |
| /// @param[in] callback The callback that communicates to the embedder the |
| /// contents of the response sent by the framework back |
| /// to the emebder. |
| EmbedderPlatformMessageResponse(fml::RefPtr<fml::TaskRunner> runner, |
| const Callback& callback); |
| |
| //---------------------------------------------------------------------------- |
| /// @brief Destroys the message response. Can be called on any thread. |
| /// Does not execute unfulfilled callbacks. |
| /// |
| ~EmbedderPlatformMessageResponse() override; |
| |
| private: |
| fml::RefPtr<fml::TaskRunner> runner_; |
| Callback callback_; |
| |
| // |PlatformMessageResponse| |
| void Complete(std::unique_ptr<fml::Mapping> data) override; |
| |
| // |PlatformMessageResponse| |
| void CompleteEmpty() override; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(EmbedderPlatformMessageResponse); |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_PLATFORM_MESSAGE_RESPONSE_H_ |