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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/arc/instance_throttle/arc_pip_window_throttle_observer.h"
#include <algorithm>
#include "ash/public/cpp/app_types_util.h"
#include "ash/public/cpp/shell_window_ids.h"
#include "ash/public/cpp/window_properties.h"
#include "base/check.h"
#include "components/exo/wm_helper.h"
#include "ui/aura/window.h"
namespace arc {
namespace {
aura::Window* GetPipContainer() {
if (!exo::WMHelper::HasInstance())
return nullptr;
auto* const wm_helper = exo::WMHelper::GetInstance();
DCHECK(wm_helper);
aura::Window* const pip_container =
wm_helper->GetPrimaryDisplayContainer(ash::kShellWindowId_PipContainer);
DCHECK(pip_container);
return pip_container;
}
} // namespace
ArcPipWindowThrottleObserver::ArcPipWindowThrottleObserver()
: ThrottleObserver("ArcPipWindowIsVisible") {}
void ArcPipWindowThrottleObserver::StartObserving(
content::BrowserContext* context,
const ObserverStateChangedCallback& callback) {
ThrottleObserver::StartObserving(context, callback);
auto* const container = GetPipContainer();
if (!container) // for testing
return;
container->AddObserver(this);
}
void ArcPipWindowThrottleObserver::StopObserving() {
ThrottleObserver::StopObserving();
auto* const container = GetPipContainer();
if (!container) // for testing
return;
container->RemoveObserver(this);
}
void ArcPipWindowThrottleObserver::OnWindowAdded(aura::Window* window) {
if (ash::IsArcWindow(window))
SetActive(true);
}
void ArcPipWindowThrottleObserver::OnWindowRemoved(aura::Window* window) {
// Check if there are any ARC windows left in the PipContainer. An old PIP
// window may be removed after a new one is added.
auto* const container = GetPipContainer();
if (!container ||
std::ranges::none_of(container->children(), &ash::IsArcWindow)) {
SetActive(false);
}
}
void ArcPipWindowThrottleObserver::OnWindowDestroying(aura::Window* window) {
SetActive(false);
StopObserving();
}
} // namespace arc
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