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<title>Qt 4.8: contenttab.cpp Example File (demos/embedded/desktopservices/contenttab.cpp)</title>
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<h1 class="title">contenttab.cpp Example File</h1>
<span class="small-subtitle">demos/embedded/desktopservices/contenttab.cpp</span>
<!-- $$$demos/embedded/desktopservices/contenttab.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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** $QT_END_LICENSE$
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****************************************************************************/</span>
<span class="comment">// EXTERNAL INCLUDES</span>
<span class="preprocessor">#include <QKeyEvent></span>
<span class="preprocessor">#include <QMessageBox></span>
<span class="preprocessor">#include <QListWidget></span>
<span class="preprocessor">#include <QVBoxLayout></span>
<span class="preprocessor">#include <QFileInfoList></span>
<span class="preprocessor">#include <QListWidgetItem></span>
<span class="comment">// INTERNAL INCLUDES</span>
<span class="comment">// CLASS HEADER</span>
<span class="preprocessor">#include "contenttab.h"</span>
<span class="comment">// CONSTRUCTORS & DESTRUCTORS</span>
ContentTab<span class="operator">::</span>ContentTab(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) :
<span class="type"><a href="qlistwidget.html">QListWidget</a></span>(parent)
{
setDragEnabled(<span class="keyword">false</span>);
setIconSize(<span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">45</span><span class="operator">,</span> <span class="number">45</span>));
}
ContentTab<span class="operator">::</span><span class="operator">~</span>ContentTab()
{
}
<span class="comment">// NEW PUBLIC METHODS</span>
<span class="type">void</span> ContentTab<span class="operator">::</span>init(<span class="keyword">const</span> <span class="type"><a href="qdesktopservices.html">QDesktopServices</a></span><span class="operator">::</span>StandardLocation <span class="operator">&</span>location<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>filter<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>icon)
{
setContentDir(location);
<span class="type"><a href="qstringlist.html">QStringList</a></span> filterList;
filterList <span class="operator">=</span> filter<span class="operator">.</span>split(<span class="string">";"</span>);
m_ContentDir<span class="operator">.</span>setNameFilters(filterList);
setIcon(icon);
connect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(itemClicked(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span><span class="operator">*</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(openItem(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span><span class="operator">*</span>)));
populateListWidget();
}
<span class="comment">// NEW PROTECTED METHODS</span>
<span class="type">void</span> ContentTab<span class="operator">::</span>setContentDir(<span class="keyword">const</span> <span class="type"><a href="qdesktopservices.html">QDesktopServices</a></span><span class="operator">::</span>StandardLocation <span class="operator">&</span>location)
{
m_ContentDir<span class="operator">.</span>setPath(<span class="type"><a href="qdesktopservices.html">QDesktopServices</a></span><span class="operator">::</span>storageLocation(location));
}
<span class="type">void</span> ContentTab<span class="operator">::</span>setIcon(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>icon)
{
m_Icon <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span>(icon);
}
<span class="type">void</span> ContentTab<span class="operator">::</span>populateListWidget()
{
<span class="type"><a href="qfileinfo.html#QFileInfoList-typedef">QFileInfoList</a></span> fileList <span class="operator">=</span> m_ContentDir<span class="operator">.</span>entryInfoList(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Files<span class="operator">,</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Time);
foreach(<span class="type"><a href="qfileinfo.html">QFileInfo</a></span> item<span class="operator">,</span> fileList) {
<span class="keyword">new</span> <span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span>(m_Icon<span class="operator">,</span> itemName(item)<span class="operator">,</span> <span class="keyword">this</span>);
}
}
<span class="type"><a href="qstring.html">QString</a></span> ContentTab<span class="operator">::</span>itemName(<span class="keyword">const</span> <span class="type"><a href="qfileinfo.html">QFileInfo</a></span> <span class="operator">&</span>item)
{
<span class="keyword">return</span> <span class="type"><a href="qstring.html">QString</a></span>(item<span class="operator">.</span>baseName() <span class="operator">+</span> <span class="string">"."</span> <span class="operator">+</span> item<span class="operator">.</span>completeSuffix());
}
<span class="type"><a href="qurl.html">QUrl</a></span> ContentTab<span class="operator">::</span>itemUrl(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span> <span class="operator">*</span>item)
{
<span class="keyword">return</span> <span class="type"><a href="qurl.html">QUrl</a></span>(<span class="string">"file:///"</span> <span class="operator">+</span> m_ContentDir<span class="operator">.</span>absolutePath() <span class="operator">+</span> <span class="string">"/"</span> <span class="operator">+</span> item<span class="operator">-</span><span class="operator">></span>text());
}
<span class="type">void</span> ContentTab<span class="operator">::</span>keyPressEvent(<span class="type"><a href="qkeyevent.html">QKeyEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">switch</span> (event<span class="operator">-</span><span class="operator">></span>key()) {
<span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_Select:
openItem(currentItem());
<span class="keyword">default</span>:
<span class="type"><a href="qlistwidget.html">QListWidget</a></span><span class="operator">::</span>keyPressEvent(event);
<span class="keyword">break</span>;
}
}
<span class="type">void</span> ContentTab<span class="operator">::</span>handleErrorInOpen(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span> <span class="operator">*</span>item)
{
Q_UNUSED(item);
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Operation Failed"</span>)<span class="operator">,</span> tr(<span class="string">"Unknown error!"</span>)<span class="operator">,</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Close);
}
<span class="comment">// NEW SLOTS</span>
<span class="type">void</span> ContentTab<span class="operator">::</span>openItem(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span> <span class="operator">*</span>item)
{
<span class="preprocessor">#if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)</span>
<span class="comment">// Opening music files doesn't work in Symbian emulator and in some SDKs freezes the</span>
<span class="comment">// emulator entirely, so prevent it.</span>
<span class="type"><a href="qstringlist.html">QStringList</a></span> nameFilters <span class="operator">=</span> m_ContentDir<span class="operator">.</span>nameFilters();
<span class="keyword">if</span> (nameFilters<span class="operator">.</span>contains(<span class="string">"*.mp3"</span>)) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Operation Failed"</span>)<span class="operator">,</span> tr(<span class="string">"Action not supported in emulator."</span>)<span class="operator">,</span>
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Close);
} <span class="keyword">else</span>
<span class="preprocessor">#endif</span>
{
<span class="type">bool</span> ret <span class="operator">=</span> <span class="type"><a href="qdesktopservices.html">QDesktopServices</a></span><span class="operator">::</span>openUrl(itemUrl(item));
<span class="keyword">if</span> (<span class="operator">!</span>ret)
handleErrorInOpen(item);
}
}
<span class="comment">// End of File</span></pre>
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<!-- @@@demos/embedded/desktopservices/contenttab.cpp -->
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