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// Copyright (c) 2013 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_IMPL_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_IMPL_H_
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "content/browser/indexed_db/indexed_db_backing_store.h"
#include "content/browser/indexed_db/indexed_db_cursor.h"
#include "content/browser/indexed_db/indexed_db_database.h"
#include "content/common/indexed_db/indexed_db_key_range.h"
namespace content {
class IndexedDBDatabaseImpl;
class IndexedDBTransaction;
class IndexedDBCursorImpl : public IndexedDBCursor {
public:
static scoped_refptr<IndexedDBCursorImpl> Create(
scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
indexed_db::CursorType cursor_type,
IndexedDBTransaction* transaction,
int64 object_store_id) {
return make_scoped_refptr(
new IndexedDBCursorImpl(cursor.Pass(),
cursor_type,
IndexedDBDatabase::NORMAL_TASK,
transaction,
object_store_id));
}
static scoped_refptr<IndexedDBCursorImpl> Create(
scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
indexed_db::CursorType cursor_type,
IndexedDBDatabase::TaskType task_type,
IndexedDBTransaction* transaction,
int64 object_store_id) {
return make_scoped_refptr(new IndexedDBCursorImpl(
cursor.Pass(), cursor_type, task_type, transaction, object_store_id));
}
// IndexedDBCursor
virtual void Advance(unsigned long,
scoped_refptr<IndexedDBCallbacksWrapper> callbacks)
OVERRIDE;
virtual void ContinueFunction(
scoped_ptr<IndexedDBKey> key,
scoped_refptr<IndexedDBCallbacksWrapper> callbacks) OVERRIDE;
virtual void DeleteFunction(
scoped_refptr<IndexedDBCallbacksWrapper> callbacks) OVERRIDE;
virtual void PrefetchContinue(
int number_to_fetch,
scoped_refptr<IndexedDBCallbacksWrapper> callbacks) OVERRIDE;
virtual void PrefetchReset(int used_prefetches, int unused_prefetches)
OVERRIDE;
virtual void PostSuccessHandlerCallback() OVERRIDE {}
const IndexedDBKey& key() const { return cursor_->key(); }
const IndexedDBKey& primary_key() const { return cursor_->primary_key(); }
std::vector<char>* Value() const {
return (cursor_type_ == indexed_db::CURSOR_KEY_ONLY) ? NULL
: cursor_->Value();
}
void Close();
private:
IndexedDBCursorImpl(scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
indexed_db::CursorType cursor_type,
IndexedDBDatabase::TaskType task_type,
IndexedDBTransaction* transaction,
int64 object_store_id);
virtual ~IndexedDBCursorImpl();
class CursorIterationOperation;
class CursorAdvanceOperation;
class CursorPrefetchIterationOperation;
IndexedDBDatabase::TaskType task_type_;
indexed_db::CursorType cursor_type_;
const scoped_refptr<IndexedDBTransaction> transaction_;
const int64 object_store_id_;
// Must be destroyed before transaction_.
scoped_ptr<IndexedDBBackingStore::Cursor> cursor_;
// Must be destroyed before transaction_.
scoped_ptr<IndexedDBBackingStore::Cursor> saved_cursor_;
bool closed_;
};
} // namespace content
#endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_IMPL_H_
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