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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_MANIFEST_MANIFEST_MANAGER_HOST_H_
#define CONTENT_BROWSER_MANIFEST_MANIFEST_MANAGER_HOST_H_
#include "base/containers/id_map.h"
#include "base/functional/callback_forward.h"
#include "content/public/browser/page_user_data.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/mojom/manifest/manifest.mojom-forward.h"
#include "third_party/blink/public/mojom/manifest/manifest_manager.mojom.h"
#include "third_party/blink/public/mojom/manifest/manifest_observer.mojom.h"
namespace content {
// ManifestManagerHost is a helper class that allows callers to get the Manifest
// associated with the main frame of the observed WebContents. It handles the
// IPC messaging with the child process.
// TODO(mlamouri): keep a cached version and a dirty bit here.
class ManifestManagerHost : public PageUserData<ManifestManagerHost>,
public blink::mojom::ManifestUrlChangeObserver {
public:
ManifestManagerHost(const ManifestManagerHost&) = delete;
ManifestManagerHost& operator=(const ManifestManagerHost&) = delete;
~ManifestManagerHost() override;
using GetManifestCallback =
base::OnceCallback<void(blink::mojom::ManifestRequestResult,
const GURL&,
blink::mojom::ManifestPtr)>;
// Calls the given callback with the manifest associated with the main frame.
// If the main frame has no manifest or if getting it failed the callback will
// have an empty manifest.
void GetManifest(GetManifestCallback callback);
void RequestManifestDebugInfo(
blink::mojom::ManifestManager::RequestManifestDebugInfoCallback callback);
void BindObserver(
mojo::PendingAssociatedReceiver<blink::mojom::ManifestUrlChangeObserver>
receiver);
private:
explicit ManifestManagerHost(Page& page);
friend class PageUserData<ManifestManagerHost>;
using CallbackMap = base::IDMap<std::unique_ptr<GetManifestCallback>>;
blink::mojom::ManifestManager& GetManifestManager();
std::vector<GetManifestCallback> ExtractPendingCallbacks();
void OnConnectionError();
void OnRequestManifestResponse(int request_id,
blink::mojom::ManifestRequestResult result,
const GURL& url,
blink::mojom::ManifestPtr manifest);
// blink::mojom::ManifestUrlChangeObserver:
void ManifestUrlChanged(const GURL& manifest_url) override;
mojo::Remote<blink::mojom::ManifestManager> manifest_manager_;
CallbackMap callbacks_;
mojo::AssociatedReceiver<blink::mojom::ManifestUrlChangeObserver>
manifest_url_change_observer_receiver_{this};
PAGE_USER_DATA_KEY_DECL();
};
} // namespace content
#endif // CONTENT_BROWSER_MANIFEST_MANIFEST_MANAGER_HOST_H_
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