/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Mozilla Corporation
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Honza Bambas <honzab@firemni.cz>
 *
 * 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
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 * the provisions above, a recipient may use your version of this file under
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 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsOfflineCacheUpdateChild_h
#define nsOfflineCacheUpdateChild_h

#include "mozilla/docshell/POfflineCacheUpdateChild.h"
#include "nsIOfflineCacheUpdate.h"

#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsICacheService.h"
#include "nsIDOMDocument.h"
#include "nsIObserver.h"
#include "nsIObserverService.h"
#include "nsIURI.h"
#include "nsString.h"
#include "nsWeakReference.h"

namespace mozilla {
namespace docshell {

class OfflineCacheUpdateChild : public nsIOfflineCacheUpdate
                                , public POfflineCacheUpdateChild
{
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIOFFLINECACHEUPDATE

    virtual bool
    RecvNotifyStateEvent(const PRUint32& stateEvent);

    virtual bool
    RecvAssociateDocuments(
            const nsCString& cacheGroupId,
            const nsCString& cacheClientId);

    virtual bool
    RecvFinish(const bool& succeded,
               const bool& isUpgrade);

    OfflineCacheUpdateChild(nsIDOMWindow* aWindow);
    ~OfflineCacheUpdateChild();

    void SetDocument(nsIDOMDocument *aDocument);

private:
    nsresult AssociateDocument(nsIDOMDocument *aDocument,
                               nsIApplicationCache *aApplicationCache);
    nsresult GatherObservers(nsCOMArray<nsIOfflineCacheUpdateObserver> &aObservers);
    nsresult Finish();

    void RefcountHitZero();

    enum {
        STATE_UNINITIALIZED,
        STATE_INITIALIZED,
        STATE_CHECKING,
        STATE_DOWNLOADING,
        STATE_CANCELLED,
        STATE_FINISHED
    } mState;

    PRPackedBool mIsUpgrade;
    PRPackedBool mSucceeded;
    PRPackedBool mIPCActivated;

    nsCString mUpdateDomain;
    nsCOMPtr<nsIURI> mManifestURI;
    nsCOMPtr<nsIURI> mDocumentURI;

    nsCString mClientID;

    nsCOMPtr<nsIObserverService> mObserverService;

    /* Clients watching this update for changes */
    nsCOMArray<nsIWeakReference> mWeakObservers;
    nsCOMArray<nsIOfflineCacheUpdateObserver> mObservers;

    /* Document that requested this update */
    nsCOMPtr<nsIDOMDocument> mDocument;

    /* Keep reference to the window that owns this update to call the
       parent offline cache update construcor */
    nsCOMPtr<nsIDOMWindow> mWindow;
};

}
}

#endif
