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contenttab.cpp Example File
demos/embedded/desktopservices/contenttab.cpp

 /****************************************************************************
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 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
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 ** This file is part of the demonstration applications of the Qt Toolkit.
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 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
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 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
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 ** packaging of this file.  Please review the following information to
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 // EXTERNAL INCLUDES
 #include <QKeyEvent>
 #include <QMessageBox>
 #include <QListWidget>
 #include <QVBoxLayout>
 #include <QFileInfoList>
 #include <QListWidgetItem>

 // INTERNAL INCLUDES

 // CLASS HEADER
 #include "contenttab.h"

 // CONSTRUCTORS & DESTRUCTORS
 ContentTab::ContentTab(QWidget *parent) :
         QListWidget(parent)
 {
     setDragEnabled(false);
     setIconSize(QSize(45, 45));
 }

 ContentTab::~ContentTab()
 {
 }

 // NEW PUBLIC METHODS
 void ContentTab::init(const QDesktopServices::StandardLocation &location,
                       const QString &filter,
                       const QString &icon)
 {
     setContentDir(location);
     QStringList filterList;
     filterList = filter.split(";");
     m_ContentDir.setNameFilters(filterList);
     setIcon(icon);

     connect(this, SIGNAL(itemClicked(QListWidgetItem*)),
             this, SLOT(openItem(QListWidgetItem*)));

     populateListWidget();
 }

 // NEW PROTECTED METHODS
 void ContentTab::setContentDir(const QDesktopServices::StandardLocation &location)
 {
     m_ContentDir.setPath(QDesktopServices::storageLocation(location));
 }

 void ContentTab::setIcon(const QString &icon)
 {
     m_Icon = QIcon(icon);
 }

 void ContentTab::populateListWidget()
 {
     QFileInfoList fileList = m_ContentDir.entryInfoList(QDir::Files, QDir::Time);
     foreach(QFileInfo item, fileList) {
         new QListWidgetItem(m_Icon, itemName(item), this);
     }
 }

 QString ContentTab::itemName(const QFileInfo &item)
 {
     return QString(item.baseName() + "." + item.completeSuffix());
 }

 QUrl ContentTab::itemUrl(QListWidgetItem *item)
 {
     return QUrl("file:///" + m_ContentDir.absolutePath() + "/" + item->text());
 }

 void ContentTab::keyPressEvent(QKeyEvent *event)
 {
     switch (event->key()) {
     case Qt::Key_Select:
         openItem(currentItem());
     default:
         QListWidget::keyPressEvent(event);
         break;
     }
 }

 void ContentTab::handleErrorInOpen(QListWidgetItem *item)
 {
     Q_UNUSED(item);
     QMessageBox::warning(this, tr("Operation Failed"), tr("Unkown error!"), QMessageBox::Close);
 }

 // NEW SLOTS
 void ContentTab::openItem(QListWidgetItem *item)
 {
 #if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)
     // Opening music files doesn't work in Symbian emulator and in some SDKs freezes the
     // emulator entirely, so prevent it.
     QStringList nameFilters = m_ContentDir.nameFilters();
     if (nameFilters.contains("*.mp3")) {
         QMessageBox::warning(this, tr("Operation Failed"), tr("Action not supported in emulator."),
                              QMessageBox::Close);
     } else
 #endif
     {
         bool ret = QDesktopServices::openUrl(itemUrl(item));
         if (!ret)
             handleErrorInOpen(item);
     }
 }

 // End of File


Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.6.3