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- // Copyright (c) 2012 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.
- #ifndef COMPONENTS_VISITEDLINK_BROWSER_VISITEDLINK_DELEGATE_H_
- #define COMPONENTS_VISITEDLINK_BROWSER_VISITEDLINK_DELEGATE_H_
- #include "base/memory/ref_counted.h"
- class GURL;
- namespace visitedlink {
- // Delegate class that clients of VisitedLinkWriter must implement.
- class VisitedLinkDelegate {
- public:
- // See RebuildTable.
- class URLEnumerator : public base::RefCountedThreadSafe<URLEnumerator> {
- public:
- // Call this with each URL to rebuild the table.
- virtual void OnURL(const GURL& url) = 0;
- // This must be called by Delegate after RebuildTable is called. |success|
- // indicates all URLs have been returned successfully. The URLEnumerator
- // object cannot be used by the delegate after this call.
- virtual void OnComplete(bool success) = 0;
- protected:
- virtual ~URLEnumerator() {}
- private:
- friend class base::RefCountedThreadSafe<URLEnumerator>;
- };
- // Delegate class is responsible for persisting the list of visited URLs
- // across browser runs. This is called by VisitedLinkWriter to repopulate
- // its internal table. Note that methods on enumerator can be called on any
- // thread but the delegate is responsible for synchronizating the calls.
- virtual void RebuildTable(const scoped_refptr<URLEnumerator>& enumerator) = 0;
- protected:
- virtual ~VisitedLinkDelegate() {}
- };
- } // namespace visitedlink
- #endif // COMPONENTS_VISITEDLINK_BROWSER_VISITEDLINK_DELEGATE_H_
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