gecko-dev/dom/indexedDB/IDBDatabase.h

/* -*- 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_idbdatabase_h__
#define mozilla_dom_indexeddb_idbdatabase_h__

#include "mozilla/dom/indexedDB/IndexedDatabase.h"

#include "nsIDocument.h"
#include "nsIIDBDatabase.h"
#include "nsDOMEventTargetHelper.h"
#include "mozilla/dom/indexedDB/IDBWrapperCache.h"
#include "mozilla/dom/indexedDB/FileManager.h"

class nsIScriptContext;
class nsPIDOMWindow;

BEGIN_INDEXEDDB_NAMESPACE

class AsyncConnectionHelper;
struct DatabaseInfo;
class IDBIndex;
class IDBObjectStore;
class IDBTransaction;
class IndexedDatabaseManager;

class IDBDatabase : public IDBWrapperCache,
                    public nsIIDBDatabase
{
  friend class AsyncConnectionHelper;
  friend class IndexedDatabaseManager;

public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIIDBDATABASE

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IDBDatabase, IDBWrapperCache)

  static already_AddRefed<IDBDatabase>
  Create(IDBWrapperCache* aOwnerCache,
         already_AddRefed<DatabaseInfo> aDatabaseInfo,
         const nsACString& aASCIIOrigin,
         FileManager* aFileManager);

  // nsIDOMEventTarget
  virtual nsresult PostHandleEvent(nsEventChainPostVisitor& aVisitor);

  nsIAtom* Id() const
  {
    return mDatabaseId;
  }

  DatabaseInfo* Info() const
  {
    return mDatabaseInfo;
  }

  const nsString& Name()
  {
    return mName;
  }

  const nsString& FilePath()
  {
    return mFilePath;
  }

  already_AddRefed<nsIDocument> GetOwnerDocument()
  {
    if (!GetOwner()) {
      return nsnull;
    }

    nsCOMPtr<nsIDocument> doc =
      do_QueryInterface(GetOwner()->GetExtantDocument());
    return doc.forget();
  }

  nsCString& Origin()
  {
    return mASCIIOrigin;
  }

  void Invalidate();

  // Whether or not the database has been invalidated. If it has then no further
  // transactions for this database will be allowed to run.
  bool IsInvalidated();

  void CloseInternal(bool aIsDead);

  // Whether or not the database has had Close called on it.
  bool IsClosed();

  void EnterSetVersionTransaction();
  void ExitSetVersionTransaction();

  FileManager* Manager() const
  {
    return mFileManager;
  }

private:
  IDBDatabase();
  ~IDBDatabase();

  void OnUnlink();

  nsRefPtr<DatabaseInfo> mDatabaseInfo;
  nsCOMPtr<nsIAtom> mDatabaseId;
  nsString mName;
  nsString mFilePath;
  nsCString mASCIIOrigin;

  PRInt32 mInvalidated;
  bool mRegistered;
  bool mClosed;
  bool mRunningVersionChange;

  nsRefPtr<FileManager> mFileManager;

  // Only touched on the main thread.
  NS_DECL_EVENT_HANDLER(abort)
  NS_DECL_EVENT_HANDLER(error)
  NS_DECL_EVENT_HANDLER(versionchange)
};

END_INDEXEDDB_NAMESPACE

#endif // mozilla_dom_indexeddb_idbdatabase_h__