1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Photos image fetcher client.

    15 *

    16 */

    17 

    18 #include <QList>

    19 

    20 #include <caservice.h>

    21 #include <canotifier.h>

    22 #include <canotifierfilter.h>

    23 

    24 #include "hsmenuentryremovedhandler.h"

    25 /*!

    26     \class HsMenuEntryRemovedHandler

    27     Listens for entry removal notifications and calls a callback.

    28     \ingroup group_hsutils

    29     \brief 

    30 */

    31 

    32 /*!

    33  Constructor.

    34  \param entryId identifies entry which removal is to be observed.

    35  \param receiver object which \a callback is to be called on requested entry

    36  removal. If \receiver is passed 0 no action will be taken on the entry removal.

    37  \param callback signal or slot that will be called on entry removal. The \a callback

    38  signature should correspond to void (*)(int, ChangeType) signal otherwise

    39  runtime warning will be provided. If \a callback is 0 no action will be

    40  taken on the entry removal.

    41 */

    42 HsMenuEntryRemovedHandler::HsMenuEntryRemovedHandler(

    43     int entryId, 

    44     QObject *receiver,

    45     const char *callback):

    46     mNotifier(0)

    47 {

    48     if (receiver != 0 && callback != 0) {

    49         connect(this, SIGNAL(notify()), receiver, callback);

    50         subscribe(entryId);

    51     }

    52 };

    53 

    54 /*!

    55  Destructor.

    56 */

    57 HsMenuEntryRemovedHandler::~HsMenuEntryRemovedHandler() {};

    58 

    59 /*!

    60   Subscribes the observer for notifications for a given entryId and

    61   makes sure the \a HsMenuEntryRemovedObserver::entryChagned will be called

    62   on any notification for the entry.

    63   \param entryId identifier of the entry to be observed.

    64 

    65 */

    66 void HsMenuEntryRemovedHandler::subscribe(int entryId)

    67 {

    68     // create notifier for a given entryId

    69     CaNotifierFilter filter;

    70     QList<int> entryIds;

    71     entryIds.append(entryId);

    72     filter.setIds(entryIds);

    73     mNotifier.reset(CaService::instance()->createNotifier(filter));

    74 

    75     connect(mNotifier.data(),

    76         SIGNAL(entryChanged(int, ChangeType)),

    77         this,

    78         SLOT(entryChanged(int, ChangeType)),

    79         Qt::UniqueConnection);

    80 }

    81 

    82 

    83 /*!

    84  Handles notification about entry change

    85  \param entryId ignored as the observer is subscribed for exactly one entry.

    86  \param changeType notified change type.

    87  */

    88 void HsMenuEntryRemovedHandler::entryChanged(int entryId, 

    89     ChangeType changeType)

    90 {

    91     Q_UNUSED(entryId); // CaNotifier should care about matching id, skip it here

    92     

    93     if (changeType == RemoveChangeType) {

    94         emit notify();

    95         mNotifier.reset(0);

    96     }

    97 }