| // Copyright 2017 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 COMPONENTS_EXO_DATA_SOURCE_DELEGATE_H_ |
| #define COMPONENTS_EXO_DATA_SOURCE_DELEGATE_H_ |
| |
| #include <string> |
| |
| #include "base/files/scoped_file.h" |
| |
| namespace exo { |
| |
| class DataSource; |
| |
| // Handles events on data devices in context-specific ways. |
| class DataSourceDelegate { |
| public: |
| // Called at the top of the data device's destructor, to give observers a |
| // chance to remove themselves. |
| virtual void OnDataSourceDestroying(DataSource* source) = 0; |
| |
| // Called when a client accepts a |mime_type|. |
| virtual void OnTarget(const std::string& mime_type) = 0; |
| |
| // Called when the data is requested. |
| virtual void OnSend(const std::string& mime_type, base::ScopedFD fd) = 0; |
| |
| // Called when selection or drag and drop operation was cancelled. |
| virtual void OnCancelled() = 0; |
| |
| // Called when a user performes drop operation. |
| virtual void OnDndDropPerformed() = 0; |
| |
| // Called when the drag and drop operation completes and compositor stop using |
| // the data source. |
| virtual void OnDndFinished() = 0; |
| |
| // Called when the compositor selects one drag and drop action. |
| virtual void OnAction(DndAction dnd_action) = 0; |
| |
| protected: |
| virtual ~DataSourceDelegate() {} |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_DATA_SOURCE_DELEGATE_H_ |