1 /*

     2 * Copyright (c) 2009 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: Music Player collection view base list container definition.

    15 *

    16 */

    17 

    18 // INCLUDE FILES

    19 #include <QtCore>

    20 #include <QGraphicsGridLayout>

    21 

    22 #include <hblistview.h>

    23 #include <hbabstractviewitem.h>

    24 #include <hblistviewitem.h>

    25 #include <hbscrollbar.h>

    26 #include <hbdocumentloader.h>

    27 #include <hblabel.h>

    28 #include <hbindexfeedback.h>

    29 

    30 #include "mpcollectionlistcontainer.h"

    31 #include "mpcollectiondatamodel.h"

    32 #include "mpmpxcollectiondata.h"

    33 #include "mptrace.h"

    34 

    35 /*!

    36     \class MpCollectionListContainer

    37     \brief Music Player collection view base list container definition.

    38 

    39     Collection container is a base container that provides interface to

    40     be implemented by the specific collection context containers, e.g.

    41     All Songs, Artists, etc. Collection container owns UI elements such

    42     as the layout and the widgets.

    43 */

    44 

    45 /*!

    46  Constructs the collection container.

    47  */

    48 MpCollectionListContainer::MpCollectionListContainer( HbDocumentLoader *loader, QGraphicsItem *parent )

    49     : MpCollectionContainer(loader, parent),

    50       mList(0),

    51       mNoMusic(0),

    52       mIndexFeedback(0),

    53       mLongPressedIndex(0),

    54       mLongPressEnabled(true)

    55 {

    56     TX_ENTRY

    57     mIndexFeedback = new HbIndexFeedback();

    58     mIndexFeedback->setIndexFeedbackPolicy(HbIndexFeedback::IndexFeedbackSingleCharacter);

    59     TX_EXIT

    60 }

    61 

    62 /*!

    63  Destructs the collection container.

    64  */

    65 MpCollectionListContainer::~MpCollectionListContainer()

    66 {

    67     TX_ENTRY

    68     delete mNoMusic;

    69     delete mIndexFeedback;

    70     TX_EXIT

    71 }

    72 

    73 /*!

    74  Initializes the collection container. Allocates all resources needed by the

    75  container.

    76  */

    77 void MpCollectionListContainer::initialize()

    78 {

    79     TX_LOG

    80 }

    81 

    82 /*!

    83  Sets the data model for the container.

    84  */

    85 void MpCollectionListContainer::setDataModel( MpCollectionDataModel *dataModel )

    86 {

    87     TX_ENTRY

    88     MpCollectionContainer::setDataModel(dataModel);

    89     if ( mList ) {

    90         mList->setModel(dataModel);

    91     }

    92     TX_EXIT

    93 }

    94 

    95 /*!

    96  Slot to be called when an item is selected by the user.

    97  */

    98 void MpCollectionListContainer::itemActivated( const QModelIndex &index )

    99 {

   100     TX_ENTRY_ARGS("index=" << index.row());

   101     emit MpCollectionContainer::itemActivated( index.row() );

   102     TX_EXIT

   103 }

   104 

   105 /*!

   106  Slot to be called when an item is long pressed by the user.

   107  Remember the index so that we can scroll to this vicinity if the data is reloaded, for example,

   108  after a delete operation is selected from the context menu.

   109  */

   110 void MpCollectionListContainer::onLongPressed( HbAbstractViewItem *listViewItem, const QPointF &coords )

   111 {

   112     TX_ENTRY

   113     if ( mLongPressEnabled ) {

   114         mLongPressedIndex = listViewItem->modelIndex().row();

   115         emit MpCollectionContainer::itemLongPressed(mLongPressedIndex, coords);

   116     }

   117     TX_EXIT

   118 }

   119 

   120 /*!

   121  Slot to be called data model has new data. 

   122  If the data is reloaded as a result of operation like delete, we want to scroll to the 

   123  nearby area where user has performed the action.

   124  

   125  \sa onLongPressed

   126  */

   127 void MpCollectionListContainer::dataReloaded()

   128 {

   129     TX_ENTRY

   130     if ( mLongPressedIndex > 0 ) {

   131         --mLongPressedIndex;

   132     }

   133     if ( mList ) {

   134         mList->scrollTo( mDataModel->index(mLongPressedIndex, 0) );

   135     }

   136     TX_EXIT

   137 }

   138 

   139 /*!

   140  \internal

   141  */

   142 void MpCollectionListContainer::initializeList()

   143 {

   144     TX_ENTRY

   145     mList->setItemRecycling(true);

   146     mList->setLongPressEnabled(true);

   147 

   148     connect(mList, SIGNAL(activated(QModelIndex)), this, SLOT(itemActivated(QModelIndex)));

   149     connect(mList, SIGNAL(longPressed(HbAbstractViewItem*, QPointF)), this, SLOT(onLongPressed(HbAbstractViewItem*, QPointF)));

   150 

   151     HbScrollBar *scrollbar = mList->verticalScrollBar();

   152     scrollbar->show();

   153     scrollbar->setInteractive(true);

   154     mList->setVerticalScrollBarPolicy(HbScrollArea::ScrollBarAsNeeded);

   155 

   156     mList->listItemPrototype()->setGraphicsSize(HbListViewItem::Thumbnail);

   157     TX_EXIT

   158 }

   159 

   160 /*!

   161  \internal

   162  */

   163 void MpCollectionListContainer::setupEmptyListContainer()

   164 {

   165     TX_ENTRY

   166     bool ok = false;

   167     mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "emptyList", &ok);

   168     if ( !ok ) {

   169         TX_LOG_ARGS("Error: invalid xml file.");

   170         Q_ASSERT_X(ok, "MpCollectionListContainer::setupContainer", "invalid xml file");

   171     }

   172 

   173     QGraphicsWidget *widget;

   174     widget = mDocumentLoader->findWidget(QString("noMusic"));

   175     mNoMusic = qobject_cast<HbLabel*>(widget);

   176     TX_EXIT

   177 }

   178