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 13namespace ui { 14 15class Event; 16class EventProcessor; 17class EventRewriter; 18 19// EventSource receives events from the native platform (e.g. X11, win32 etc.) 20// and sends the events to an EventProcessor. 21class 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