| // Copyright 2013 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 UI_EVENTS_EVENT_SOURCE_H_ |
| #define UI_EVENTS_EVENT_SOURCE_H_ |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "ui/events/event_dispatcher.h" |
| #include "ui/events/events_export.h" |
| |
| namespace ui { |
| |
| class Event; |
| class EventProcessor; |
| class EventRewriter; |
| |
| // EventSource receives events from the native platform (e.g. X11, win32 etc.) |
| // and sends the events to an EventProcessor. |
| class EVENTS_EXPORT EventSource { |
| public: |
| EventSource(); |
| virtual ~EventSource(); |
| |
| virtual EventProcessor* GetEventProcessor() = 0; |
| |
| // Adds a rewriter to modify events before they are sent to the |
| // EventProcessor. The rewriter must be explicitly removed from the |
| // EventSource before the rewriter is destroyed. The EventSource |
| // does not take ownership of the rewriter. |
| void AddEventRewriter(EventRewriter* rewriter); |
| void RemoveEventRewriter(EventRewriter* rewriter); |
| |
| protected: |
| EventDispatchDetails SendEventToProcessor(Event* event); |
| |
| private: |
| friend class EventSourceTestApi; |
| |
| EventDispatchDetails DeliverEventToProcessor(Event* event); |
| |
| typedef std::vector<EventRewriter*> EventRewriterList; |
| EventRewriterList rewriter_list_; |
| DISALLOW_COPY_AND_ASSIGN(EventSource); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_EVENTS_EVENT_SOURCE_H_ |