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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/media_router/browser/media_router_base.h"
#include <string>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/uuid.h"
#include "content/public/browser/browser_thread.h"
using blink::mojom::PresentationConnectionState;
namespace media_router {
MediaRouterBase::~MediaRouterBase() = default;
base::CallbackListSubscription
MediaRouterBase::AddPresentationConnectionStateChangedCallback(
const MediaRoute::Id& route_id,
const content::PresentationConnectionStateChangedCallback& callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
auto& callbacks = presentation_connection_state_callbacks_[route_id];
if (!callbacks) {
callbacks = std::make_unique<PresentationConnectionStateChangedCallbacks>();
callbacks->set_removal_callback(base::BindRepeating(
&MediaRouterBase::OnPresentationConnectionStateCallbackRemoved,
base::Unretained(this), route_id));
}
return callbacks->Add(callback);
}
MediaRouterBase::MediaRouterBase() = default;
// static
std::string MediaRouterBase::CreatePresentationId() {
return "mr_" + base::Uuid::GenerateRandomV4().AsLowercaseString();
}
void MediaRouterBase::NotifyPresentationConnectionStateChange(
const MediaRoute::Id& route_id,
PresentationConnectionState state) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// We should call NotifyPresentationConnectionClose() for the CLOSED state.
DCHECK_NE(state, PresentationConnectionState::CLOSED);
auto it = presentation_connection_state_callbacks_.find(route_id);
if (it == presentation_connection_state_callbacks_.end())
return;
it->second->Notify(content::PresentationConnectionStateChangeInfo(state));
}
void MediaRouterBase::NotifyPresentationConnectionClose(
const MediaRoute::Id& route_id,
blink::mojom::PresentationConnectionCloseReason reason,
const std::string& message) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
auto it = presentation_connection_state_callbacks_.find(route_id);
if (it == presentation_connection_state_callbacks_.end())
return;
content::PresentationConnectionStateChangeInfo info(
PresentationConnectionState::CLOSED);
info.close_reason = reason;
info.message = message;
it->second->Notify(info);
}
void MediaRouterBase::OnPresentationConnectionStateCallbackRemoved(
const MediaRoute::Id& route_id) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
auto it = presentation_connection_state_callbacks_.find(route_id);
if (it != presentation_connection_state_callbacks_.end() &&
it->second->empty()) {
presentation_connection_state_callbacks_.erase(route_id);
}
}
} // namespace media_router
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