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// Copyright 2015 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 "chrome/browser/media/router/media_router_base.h"
#include "base/bind.h"
namespace media_router {
MediaRouterBase::MediaRouterBase() = default;
MediaRouterBase::~MediaRouterBase() = default;
scoped_ptr<PresentationConnectionStateSubscription>
MediaRouterBase::AddPresentationConnectionStateChangedCallback(
const MediaRoute::Id& route_id,
const content::PresentationConnectionStateChangedCallback& callback) {
DCHECK(thread_checker_.CalledOnValidThread());
auto* callbacks = presentation_connection_state_callbacks_.get(route_id);
if (!callbacks) {
callbacks = new PresentationConnectionStateChangedCallbacks;
callbacks->set_removal_callback(base::Bind(
&MediaRouterBase::OnPresentationConnectionStateCallbackRemoved,
base::Unretained(this), route_id));
presentation_connection_state_callbacks_.add(route_id,
make_scoped_ptr(callbacks));
}
return callbacks->Add(callback);
}
void MediaRouterBase::NotifyPresentationConnectionStateChange(
const MediaRoute::Id& route_id,
content::PresentationConnectionState state) {
auto* callbacks = presentation_connection_state_callbacks_.get(route_id);
if (!callbacks)
return;
callbacks->Notify(state);
}
void MediaRouterBase::OnPresentationConnectionStateCallbackRemoved(
const MediaRoute::Id& route_id) {
auto* callbacks = presentation_connection_state_callbacks_.get(route_id);
if (callbacks && callbacks->empty())
presentation_connection_state_callbacks_.erase(route_id);
}
} // namespace media_router
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