// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/components/mahi/public/cpp/mahi_media_app_events_proxy.h"
#include "base/notreached.h"
namespace chromeos {
namespace {
MahiMediaAppEventsProxy* g_instance = nullptr;
} // namespace
// static
MahiMediaAppEventsProxy* MahiMediaAppEventsProxy::Get() {
return g_instance;
}
MahiMediaAppEventsProxy::MahiMediaAppEventsProxy() {
DCHECK(!g_instance);
g_instance = this;
}
MahiMediaAppEventsProxy::~MahiMediaAppEventsProxy() {
DCHECK_EQ(this, g_instance);
g_instance = nullptr;
}
// static
ScopedMahiMediaAppEventsProxySetter*
ScopedMahiMediaAppEventsProxySetter::instance_ = nullptr;
ScopedMahiMediaAppEventsProxySetter::ScopedMahiMediaAppEventsProxySetter(
MahiMediaAppEventsProxy* proxy) {
// Only allow one scoped instance at a time.
if (instance_) {
NOTREACHED_IN_MIGRATION();
return;
}
instance_ = this;
// Save the real manager instance and replace it with the fake one.
real_proxy_instance_ = g_instance;
g_instance = proxy;
}
ScopedMahiMediaAppEventsProxySetter::~ScopedMahiMediaAppEventsProxySetter() {
if (instance_ != this) {
NOTREACHED_IN_MIGRATION();
return;
}
instance_ = nullptr;
g_instance = real_proxy_instance_;
real_proxy_instance_ = nullptr;
}
} // namespace chromeos