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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/events/test/x11_event_waiter.h"
#include "base/task/single_thread_task_runner.h"
#include "ui/gfx/x/x11_atom_cache.h"
#include "ui/gfx/x/xproto.h"
#include "ui/gfx/x/xproto_util.h"
namespace ui {
// static
XEventWaiter* XEventWaiter::Create(x11::Window window,
base::OnceClosure callback) {
auto* connection = x11::Connection::Get();
x11::ClientMessageEvent marker_event{
.format = 8,
.window = window,
.type = MarkerEventAtom(),
};
x11::SendEvent(marker_event, window, x11::EventMask::NoEvent);
connection->Flush();
// Will be deallocated when the expected event is received.
return new XEventWaiter(std::move(callback));
}
// XEventWaiter implementation
XEventWaiter::XEventWaiter(base::OnceClosure callback)
: success_callback_(std::move(callback)) {
x11::Connection::Get()->AddEventObserver(this);
}
XEventWaiter::~XEventWaiter() {
x11::Connection::Get()->RemoveEventObserver(this);
}
void XEventWaiter::OnEvent(const x11::Event& xev) {
auto* client = xev.As<x11::ClientMessageEvent>();
if (client && client->type == MarkerEventAtom()) {
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, std::move(success_callback_));
delete this;
}
}
// Returns atom that indidates that the XEvent is marker event.
x11::Atom XEventWaiter::MarkerEventAtom() {
return x11::GetAtom("marker_event");
}
} // namespace ui
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