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// Copyright 2014 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.
#include "ui/events/platform/x11/x11_event_source.h"
#include <X11/Xlib.h>
#include "base/message_loop/message_loop.h"
#include "base/message_loop/message_pump_libevent.h"
namespace ui {
namespace {
class X11EventSourceLibevent : public X11EventSource,
public base::MessagePumpLibevent::Watcher {
public:
explicit X11EventSourceLibevent(XDisplay* display)
: X11EventSource(display),
initialized_(false) {
AddEventWatcher();
}
virtual ~X11EventSourceLibevent() {
}
private:
void AddEventWatcher() {
if (initialized_)
return;
if (!base::MessageLoop::current())
return;
int fd = ConnectionNumber(display());
base::MessageLoopForUI::current()->WatchFileDescriptor(fd, true,
base::MessagePumpLibevent::WATCH_READ, &watcher_controller_, this);
initialized_ = true;
}
// PlatformEventSource:
virtual void OnDispatcherListChanged() OVERRIDE {
AddEventWatcher();
}
// base::MessagePumpLibevent::Watcher:
virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE {
DispatchXEvents();
}
virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {
NOTREACHED();
}
base::MessagePumpLibevent::FileDescriptorWatcher watcher_controller_;
bool initialized_;
DISALLOW_COPY_AND_ASSIGN(X11EventSourceLibevent);
};
} // namespace
scoped_ptr<PlatformEventSource> PlatformEventSource::CreateDefault() {
return scoped_ptr<PlatformEventSource>(
new X11EventSourceLibevent(gfx::GetXDisplay()));
}
} // namespace ui
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