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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_CAST_RECEIVER_BROWSER_APPLICATION_CLIENT_H_
#define COMPONENTS_CAST_RECEIVER_BROWSER_APPLICATION_CLIENT_H_
#include <memory>
#include <string_view>
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "components/cast_receiver/browser/public/application_state_observer.h"
#include "components/cast_receiver/browser/public/streaming_resolution_observer.h"
#include "content/public/browser/frame_tree_node_id.h"
#include "services/network/public/cpp/network_context_getter.h"
namespace blink {
class URLLoaderThrottle;
} // namespace blink
namespace content {
class WebContents;
} // namespace content
namespace gfx {
class Rect;
} // namespace gfx
namespace media {
struct VideoTransformation;
} // namespace media
namespace media_control {
class MediaBlocker;
} // namespace media_control
namespace url_rewrite {
class UrlRequestRewriteRulesManager;
} // namespace url_rewrite
namespace cast_receiver {
class RuntimeApplication;
// This class is responsible for providing all factory methods required for
// creating the classes responsible for management and control of cast
// application types, as required for the functionality of the remainder of
// this component, as well as responding to any callbacks from the application
// process.
class ApplicationClient : public StreamingResolutionObserver,
public ApplicationStateObserver {
public:
// This class handles managing the lifetime and interaction with the Renderer
// process for application-specific objects. All functions of this object are
// safe to call at any point during this object's lifetime.
class ApplicationControls {
public:
virtual ~ApplicationControls();
// Returns the MediaBlocker instance associated with this application.
virtual media_control::MediaBlocker& GetMediaBlocker() = 0;
// Returns the UrlRequestRewriteRulesManager instance associated with this
// application.
virtual url_rewrite::UrlRequestRewriteRulesManager&
GetUrlRequestRewriteRulesManager() = 0;
};
explicit ApplicationClient(
network::NetworkContextGetter network_context_getter);
~ApplicationClient() override;
// Returns the NetworkContext to use with the cast_streaming component for
// network access to implement the Cast Streaming receiver. (This
// NetworkContext is eventually passed to the Open Screen library platform
// implementation.)
network::NetworkContextGetter network_context_getter() const {
return network_context_getter_;
}
// Returns the ApplicationControls associated with |web_contents|. The
// lifetime of this instance is the same as that of |web_contents|.
ApplicationControls& GetApplicationControls(
const content::WebContents& web_contents);
// As defined in ContentBrowserClientMixins.
void AddApplicationStateObserver(ApplicationStateObserver* observer);
void RemoveApplicationStateObserver(ApplicationStateObserver* observer);
void AddStreamingResolutionObserver(StreamingResolutionObserver* observer);
void RemoveStreamingResolutionObserver(StreamingResolutionObserver* observer);
void OnWebContentsCreated(content::WebContents* web_contents);
using CorsExemptHeaderCallback =
base::RepeatingCallback<bool(std::string_view)>;
std::vector<std::unique_ptr<blink::URLLoaderThrottle>>
CreateURLLoaderThrottles(
const base::RepeatingCallback<content::WebContents*()>& wc_getter,
content::FrameTreeNodeId frame_tree_node_id,
CorsExemptHeaderCallback is_cors_exempt_header_cb);
// StreamingResolutionObserver implementation:
void OnStreamingResolutionChanged(
const gfx::Rect& size,
const media::VideoTransformation& transformation) final;
// ApplicationStateObserver implementation:
void OnForegroundApplicationChanged(RuntimeApplication* app) final;
private:
network::NetworkContextGetter network_context_getter_;
base::ObserverList<StreamingResolutionObserver>
streaming_resolution_observer_list_;
base::ObserverList<ApplicationStateObserver> application_state_observer_list_;
base::WeakPtrFactory<ApplicationClient> weak_factory_;
};
} // namespace cast_receiver
#endif // COMPONENTS_CAST_RECEIVER_BROWSER_APPLICATION_CLIENT_H_
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