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// Copyright 2016 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_PLATFORM_X11_X11_EVENT_SOURCE_DEFAULT_H_
#define UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_DEFAULT_H_
#include "base/macros.h"
#include "base/message_loop/message_pump_for_ui.h"
#include "ui/events/events_export.h"
#include "ui/events/platform/platform_event_source.h"
#include "ui/events/platform/x11/x11_event_source.h"
namespace ui {
// PlatformEventSource implementation which uses MessagePumpForUI::FdWatcher to
// be notified about incoming XEvents and converts XEvents to ui::Events before
// dispatching. For X11 specific events a separate list of XEventDispatchers is
// maintained.
class EVENTS_EXPORT X11EventSourceDefault
: public X11EventSourceDelegate,
public PlatformEventSource,
public base::MessagePumpForUI::FdWatcher {
public:
explicit X11EventSourceDefault(XDisplay* display);
~X11EventSourceDefault() override;
static X11EventSourceDefault* GetInstance();
// X11EventSourceDelegate:
void ProcessXEvent(XEvent* xevent) override;
void AddXEventDispatcher(XEventDispatcher* dispatcher) override;
void RemoveXEventDispatcher(XEventDispatcher* dispatcher) override;
private:
// Registers event watcher with Libevent.
void AddEventWatcher();
// Tells XEventDispatchers, which can also have PlatformEventDispatchers, that
// a translated event is going to be sent next, then dispatches the event and
// notifies XEventDispatchers the event has been sent out and, most probably,
// consumed.
void DispatchPlatformEvent(const PlatformEvent& event, XEvent* xevent);
// Sends XEvent to registered XEventDispatchers.
void DispatchXEventToXEventDispatchers(XEvent* xevent);
// PlatformEventSource:
void StopCurrentEventStream() override;
void OnDispatcherListChanged() override;
// base::MessagePumpForUI::FdWatcher:
void OnFileCanReadWithoutBlocking(int fd) override;
void OnFileCanWriteWithoutBlocking(int fd) override;
X11EventSource event_source_;
// Keep track of all XEventDispatcher to send XEvents directly to.
base::ObserverList<XEventDispatcher>::Unchecked dispatchers_xevent_;
base::MessagePumpForUI::FdWatchController watcher_controller_;
bool initialized_ = false;
DISALLOW_COPY_AND_ASSIGN(X11EventSourceDefault);
};
} // namespace ui
#endif // UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_DEFAULT_H_
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