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:  

    15  *   

    16  */

    17 

    18 #include <QDir>

    19 #include <QStringList>

    20 #include <QFileSystemWatcher>

    21 #include <QPair>

    22 

    23 #include <HbIcon>

    24 

    25 #include "cpthemelistmodel.h"

    26 #include "cpthemeinfo.h"

    27 #include "cpthemeutil.h"

    28 

    29 /*

    30     CpThemeChangerModel provides an interface to the data contained in the

    31     theme list using QAbstractListModel.

    32 */

    33 

    34 /*

    35     Constructor

    36 */

    37 CpThemeListModel::CpThemeListModel(QObject* parent)

    38     : QAbstractListModel(parent)

    39     , mTopThemeList()

    40     , mThemeList()

    41     , mBottomThemeList()

    42     , mFileWatcher(new QFileSystemWatcher(this))

    43 {

    44     //Build theme list

    45     mThemeList = CpThemeUtil::buildThemeList();

    46     

    47     //Look into theme paths and add a file watcher for it

    48     //to get notified when themes are added.

    49     QStringList themePaths = CpThemeUtil::themeDirectories(mThemeList);

    50     if(!themePaths.empty()) {

    51         mFileWatcher->addPaths(themePaths);

    52     }

    53    

    54     connect(mFileWatcher, SIGNAL(directoryChanged(QString)),

    55            this, SLOT(themeListChanged()));

    56    

    57 }

    58 

    59 /*

    60     Destructor

    61 */

    62 CpThemeListModel::~CpThemeListModel()

    63 {

    64     delete mFileWatcher;

    65     mFileWatcher = 0;

    66 

    67 }

    68 

    69 /*

    70     Reimplemented from QAbstractListModel.

    71 */

    72 int CpThemeListModel::rowCount(const QModelIndex&) const

    73 {

    74     return mTopThemeList.size() +

    75         mThemeList.size() +

    76         mBottomThemeList.size();

    77 }

    78 

    79 /*

    80     Reimplemented from QAbstractListModel. 

    81 */

    82 QVariant CpThemeListModel::data(const QModelIndex& index, int role) const

    83 {

    84     QVariant retVal = QVariant();

    85 

    86     if (index.isValid()) {

    87         // figure out which list we're in and do the appropriate mapping

    88         int row = index.row();

    89         const QList<CpThemeInfo> *list = 0;

    90         if (row < mTopThemeList.size()) {

    91             list = &mTopThemeList;

    92         } else {

    93             row -= mTopThemeList.size();

    94             if ( row < mThemeList.size() ) {

    95                 list = &mThemeList;

    96             } else {

    97                 row -= mThemeList.size();

    98                 if ( row < mBottomThemeList.size() ) {

    99                     list = &mBottomThemeList;

   100                 }

   101             }

   102         }

   103 

   104         if (list) {

   105             switch (role) {

   106                 case Qt::DisplayRole:

   107                     retVal = list->at(row).name();

   108                     break;

   109                     

   110                 case Qt::SizeHintRole:

   111                     retVal = list->at(row).icon().size();

   112                     break;

   113                                 

   114                 case ItemDataRole:

   115                     retVal = list->at(row).itemData();

   116                     break;

   117 

   118                 case ItemTypeRole:

   119                     retVal = QVariant::fromValue<CpThemeInfo::ThemeListItemType>(list->at(row).itemType());

   120                     break;

   121 

   122                 default:

   123                     // do nothing

   124                     qt_noop();

   125             }

   126         }

   127     }

   128 

   129     return retVal;

   130 }

   131 

   132 /*

   133     Responds appropriately when the underlying data in the theme changer is modified.

   134 

   135     Unfortunately the directory watcher from QFileWatcher only says when something changed

   136     not what changed.  Therefore the model is considered reset rather than having rows

   137     with dataChanged.

   138 */

   139 void CpThemeListModel::themeListChanged()

   140 {

   141     beginResetModel();

   142     if(!mThemeList.empty()) {

   143         mThemeList.clear();

   144     }

   145     mThemeList = CpThemeUtil::buildThemeList();

   146   

   147     endResetModel();

   148 }

   149 /*!

   150  * Returns index of theme infor within the theme list.

   151  */

   152 int CpThemeListModel::indexOf(const CpThemeInfo& theme) const

   153 {

   154     return mThemeList.indexOf(theme);

   155 }