1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_EVENTS_EVENT_SOURCE_H_ 6 #define UI_EVENTS_EVENT_SOURCE_H_ 7 8 #include <vector> 9 10 #include "ui/events/event_dispatcher.h" 11 #include "ui/events/events_export.h" 12 13 namespace ui { 14 15 class Event; 16 class EventProcessor; 17 class EventRewriter; 18 19 // EventSource receives events from the native platform (e.g. X11, win32 etc.) 20 // and sends the events to an EventProcessor. 21 class EVENTS_EXPORT EventSource { 22 public: 23 EventSource(); 24 virtual ~EventSource(); 25 26 virtual EventProcessor* GetEventProcessor() = 0; 27 28 // Adds a rewriter to modify events before they are sent to the 29 // EventProcessor. The rewriter must be explicitly removed from the 30 // EventSource before the rewriter is destroyed. The EventSource 31 // does not take ownership of the rewriter. 32 void AddEventRewriter(EventRewriter* rewriter); 33 void RemoveEventRewriter(EventRewriter* rewriter); 34 35 protected: 36 EventDispatchDetails SendEventToProcessor(Event* event); 37 38 private: 39 friend class EventSourceTestApi; 40 41 typedef std::vector<EventRewriter*> EventRewriterList; 42 EventDispatchDetails DeliverEventToProcessor(Event* event); 43 EventRewriterList rewriter_list_; 44 DISALLOW_COPY_AND_ASSIGN(EventSource); 45 }; 46 47 } // namespace ui 48 49 #endif // UI_EVENTS_EVENT_SOURCE_H_ 50