gecko/dom/indexedDB/IDBCursor.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef mozilla_dom_indexeddb_idbcursor_h__
#define mozilla_dom_indexeddb_idbcursor_h__
#include "mozilla/dom/indexedDB/IndexedDatabase.h"
#include "mozilla/dom/indexedDB/IDBObjectStore.h"
#include "nsIIDBCursor.h"
#include "nsDOMEventTargetHelper.h"
class nsIRunnable;
BEGIN_INDEXEDDB_NAMESPACE
class IDBIndex;
class IDBRequest;
class IDBTransaction;
struct KeyValuePair
{
Key key;
nsString value;
};
struct KeyKeyPair
{
Key key;
Key value;
};
class ContinueRunnable;
class IDBCursor : public nsDOMEventTargetHelper,
public nsIIDBCursor
{
friend class ContinueRunnable;
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIIDBCURSOR
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(IDBCursor,
nsDOMEventTargetHelper)
static
already_AddRefed<IDBCursor>
Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBObjectStore* aObjectStore,
PRUint16 aDirection,
nsTArray<KeyValuePair>& aData);
static
already_AddRefed<IDBCursor>
Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBIndex* aIndex,
PRUint16 aDirection,
nsTArray<KeyKeyPair>& aData);
static
already_AddRefed<IDBCursor>
Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBIndex* aIndex,
PRUint16 aDirection,
nsTArray<KeyValuePair>& aData);
enum Type
{
OBJECTSTORE = 0,
INDEX,
INDEXOBJECT
};
IDBTransaction* Transaction()
{
return mTransaction;
}
protected:
IDBCursor();
~IDBCursor();
static
already_AddRefed<IDBCursor>
CreateCommon(IDBRequest* aRequest,
IDBTransaction* aTransaction,
PRUint16 aDirection);
nsRefPtr<IDBRequest> mRequest;
nsRefPtr<IDBTransaction> mTransaction;
nsRefPtr<IDBObjectStore> mObjectStore;
nsRefPtr<IDBIndex> mIndex;
PRUint16 mDirection;
nsCOMPtr<nsIVariant> mCachedKey;
jsval mCachedValue;
bool mHaveCachedValue;
bool mValueRooted;
bool mContinueCalled;
PRUint32 mDataIndex;
Type mType;
nsTArray<KeyValuePair> mData;
nsTArray<KeyKeyPair> mKeyData;
// Only touched on the main thread.
nsRefPtr<nsDOMEventListenerWrapper> mOnErrorListener;
};
END_INDEXEDDB_NAMESPACE
#endif // mozilla_dom_indexeddb_idbcursor_h__