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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Needed for BUILDFLAG(IS_WIN)
#include "build/build_config.h"
// Windows headers must come first.
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#endif
// Proceed with header includes in usual order.
#include "content/browser/scheduler/responsiveness/native_event_observer.h"
#include "ui/events/platform/platform_event_source.h"
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "ui/aura/env.h"
#include "ui/events/event.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "base/task/current_thread.h"
#endif
namespace content {
namespace responsiveness {
NativeEventObserver::NativeEventObserver(
WillRunEventCallback will_run_event_callback,
DidRunEventCallback did_run_event_callback)
: will_run_event_callback_(will_run_event_callback),
did_run_event_callback_(did_run_event_callback) {
RegisterObserver();
}
NativeEventObserver::~NativeEventObserver() {
DeregisterObserver();
}
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
void NativeEventObserver::RegisterObserver() {
aura::Env::GetInstance()->AddWindowEventDispatcherObserver(this);
}
void NativeEventObserver::DeregisterObserver() {
aura::Env::GetInstance()->RemoveWindowEventDispatcherObserver(this);
}
void NativeEventObserver::OnWindowEventDispatcherStartedProcessing(
aura::WindowEventDispatcher* dispatcher,
const ui::Event& event) {
EventInfo info{&event};
events_being_processed_.push_back(info);
will_run_event_callback_.Run(&event);
}
void NativeEventObserver::OnWindowEventDispatcherFinishedProcessingEvent(
aura::WindowEventDispatcher* dispatcher) {
EventInfo& info = events_being_processed_.back();
did_run_event_callback_.Run(info.unique_id.get());
events_being_processed_.pop_back();
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#if BUILDFLAG(IS_WIN)
void NativeEventObserver::RegisterObserver() {
base::CurrentUIThread::Get()->AddMessagePumpObserver(this);
}
void NativeEventObserver::DeregisterObserver() {
base::CurrentUIThread::Get()->RemoveMessagePumpObserver(this);
}
void NativeEventObserver::WillDispatchMSG(const MSG& msg) {
will_run_event_callback_.Run(&msg);
}
void NativeEventObserver::DidDispatchMSG(const MSG& msg) {
did_run_event_callback_.Run(&msg);
}
#endif // BUILDFLAG(IS_WIN)
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FUCHSIA) || BUILDFLAG(IS_IOS)
void NativeEventObserver::RegisterObserver() {}
void NativeEventObserver::DeregisterObserver() {}
#endif // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FUCHSIA)
} // namespace responsiveness
} // namespace content
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