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50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef UI_EVENTS_EVENT_SOURCE_H_
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#define UI_EVENTS_EVENT_SOURCE_H_
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#include <vector>
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#include "ui/events/event_dispatcher.h"
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#include "ui/events/events_export.h"
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namespace ui {
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class Event;
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class EventProcessor;
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class EventRewriter;
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// EventSource receives events from the native platform (e.g. X11, win32 etc.)
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// and sends the events to an EventProcessor.
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class EVENTS_EXPORT EventSource {
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public:
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EventSource();
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virtual ~EventSource();
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virtual EventProcessor* GetEventProcessor() = 0;
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// Adds a rewriter to modify events before they are sent to the
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// EventProcessor. The rewriter must be explicitly removed from the
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// EventSource before the rewriter is destroyed. The EventSource
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// does not take ownership of the rewriter.
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void AddEventRewriter(EventRewriter* rewriter);
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void RemoveEventRewriter(EventRewriter* rewriter);
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protected:
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EventDispatchDetails SendEventToProcessor(Event* event);
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private:
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friend class EventSourceTestApi;
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typedef std::vector<EventRewriter*> EventRewriterList;
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EventDispatchDetails DeliverEventToProcessor(Event* event);
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EventRewriterList rewriter_list_;
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DISALLOW_COPY_AND_ASSIGN(EventSource);
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};
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} // namespace ui
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#endif // UI_EVENTS_EVENT_SOURCE_H_
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