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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_BASE_OAUTH_TOKEN_GETTER_PROXY_H_
#define REMOTING_BASE_OAUTH_TOKEN_GETTER_PROXY_H_
#include "base/functional/callback.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/base/oauth_token_getter.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace remoting {
// Takes an instance of |OAuthTokenGetter| and runs (and deletes) it on the
// |task_runner| sequence. The proxy will silently drop requests once
// |token_getter| is deleted. This class is useful when a class needs to take a
// unique_ptr to OAuthTokenGetter but you still want to share the underlying
// token getter instance. Methods can be called from any sequence.
class OAuthTokenGetterProxy : public OAuthTokenGetter {
public:
OAuthTokenGetterProxy(base::WeakPtr<OAuthTokenGetter> token_getter,
scoped_refptr<base::SequencedTaskRunner> task_runner);
// Creates an OAuthTokenGetterProxy that always runs |token_getter| on the
// sequence where this constructor is called.
explicit OAuthTokenGetterProxy(base::WeakPtr<OAuthTokenGetter> token_getter);
OAuthTokenGetterProxy(const OAuthTokenGetterProxy&) = delete;
OAuthTokenGetterProxy& operator=(const OAuthTokenGetterProxy&) = delete;
~OAuthTokenGetterProxy() override;
// OAuthTokenGetter overrides.
void CallWithToken(TokenCallback on_access_token) override;
void InvalidateCache() override;
base::WeakPtr<OAuthTokenGetter> GetWeakPtr() override;
private:
base::WeakPtr<OAuthTokenGetter> token_getter_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
base::WeakPtrFactory<OAuthTokenGetterProxy> weak_factory_{this};
};
} // namespace remoting
#endif // REMOTING_BASE_OAUTH_TOKEN_GETTER_PROXY_H_
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