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<h1 class="title">qdeclarativefolderlistmodel.cpp Example File</h1>
<span class="small-subtitle">src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp</span>
<!-- $$$src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp-description -->
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<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &quot;qdeclarativefolderlistmodel.h&quot;</span>
<span class="preprocessor">#include &lt;QDirModel&gt;</span>
<span class="preprocessor">#include &lt;QDebug&gt;</span>
<span class="preprocessor">#include &lt;qdeclarativecontext.h&gt;</span>
<span class="preprocessor">#ifndef QT_NO_DIRMODEL</span>
<span class="keyword">class</span> <span class="type">QDeclarativeFolderListModelPrivate</span>
{
<span class="keyword">public</span>:
<span class="type">QDeclarativeFolderListModelPrivate</span>()
: sortField(<span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>Name)<span class="operator">,</span> sortReversed(<span class="keyword">false</span>)<span class="operator">,</span> count(<span class="number">0</span>) {
nameFilters <span class="operator">&lt;</span><span class="operator">&lt;</span> QLatin1String(<span class="string">&quot;*&quot;</span>);
}
<span class="type">void</span> updateSorting() {
<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>SortFlags flags <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">switch</span>(sortField) {
<span class="keyword">case</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>Unsorted:
flags <span class="operator">|</span><span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Unsorted;
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>Name:
flags <span class="operator">|</span><span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Name;
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>Time:
flags <span class="operator">|</span><span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Time;
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>Size:
flags <span class="operator">|</span><span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Size;
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>Type:
flags <span class="operator">|</span><span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Type;
<span class="keyword">break</span>;
}
<span class="keyword">if</span> (sortReversed)
flags <span class="operator">|</span><span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Reversed;
model<span class="operator">.</span>setSorting(flags);
}
<span class="type"><a href="qdirmodel.html">QDirModel</a></span> model;
<span class="type"><a href="qurl.html">QUrl</a></span> folder;
<span class="type"><a href="qstringlist.html">QStringList</a></span> nameFilters;
<span class="type"><a href="qmodelindex.html">QModelIndex</a></span> folderIndex;
<span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>SortField sortField;
<span class="type">bool</span> sortReversed;
<span class="type">int</span> count;
};
<span class="comment">/*!
\qmlclass FolderListModel QDeclarativeFolderListModel
\ingroup qml-working-with-data
\brief The FolderListModel provides a model of the contents of a file system folder.
FolderListModel provides access to information about the contents of a folder
in the local file system, exposing a list of files to views and other data components.
\note This type is made available by importing the \c Qt.labs.folderlistmodel module.
\e{Elements in the Qt.labs module are not guaranteed to remain compatible
in future versions.}
\bold{import Qt.labs.folderlistmodel 1.0}
The \l folder property specifies the folder to access. Information about the
files and directories in the folder is supplied via the model's interface.
Components access names and paths via the following roles:
\list
\o fileName
\o filePath
\endlist
Additionally a file entry can be differentiated from a folder entry via the
isFolder() method.
\section1 Filtering
Various properties can be set to filter the number of files and directories
exposed by the model.
The \l nameFilters property can be set to contain a list of wildcard filters
that are applied to names of files and directories, causing only those that
match the filters to be exposed.
Directories can be included or excluded using the \l showDirs property, and
navigation directories can also be excluded by setting the \l showDotAndDotDot
property to false.
It is sometimes useful to limit the files and directories exposed to those
that the user can access. The \l showOnlyReadable property can be set to
enable this feature.
\section1 Example Usage
The following example shows a FolderListModel being used to provide a list
of QML files in a \l ListView:
\snippet doc/src/snippets/declarative/folderlistmodel.qml 0
\section1 Path Separators
Qt uses &quot;/&quot; as a universal directory separator in the same way that &quot;/&quot; is
used as a path separator in URLs. If you always use &quot;/&quot; as a directory
separator, Qt will translate your paths to conform to the underlying
operating system.
\sa {QML Data Models}
*/</span>
<span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span><span class="type">QDeclarativeFolderListModel</span>(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qabstractlistmodel.html">QAbstractListModel</a></span>(parent)
{
<span class="type"><a href="qhash.html">QHash</a></span><span class="operator">&lt;</span><span class="type">int</span><span class="operator">,</span> <span class="type"><a href="qbytearray.html">QByteArray</a></span><span class="operator">&gt;</span> roles;
roles<span class="operator">[</span>FileNameRole<span class="operator">]</span> <span class="operator">=</span> <span class="string">&quot;fileName&quot;</span>;
roles<span class="operator">[</span>FilePathRole<span class="operator">]</span> <span class="operator">=</span> <span class="string">&quot;filePath&quot;</span>;
setRoleNames(roles);
d <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDeclarativeFolderListModelPrivate</span>;
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>AllDirs <span class="operator">|</span> <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>Drives <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>NoDotAndDotDot);
connect(<span class="operator">&amp;</span>d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">,</span> SIGNAL(rowsInserted(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span><span class="operator">,</span><span class="type">int</span><span class="operator">,</span><span class="type">int</span>))
<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(inserted(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span><span class="operator">,</span><span class="type">int</span><span class="operator">,</span><span class="type">int</span>)));
connect(<span class="operator">&amp;</span>d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">,</span> SIGNAL(rowsRemoved(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span><span class="operator">,</span><span class="type">int</span><span class="operator">,</span><span class="type">int</span>))
<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(removed(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span><span class="operator">,</span><span class="type">int</span><span class="operator">,</span><span class="type">int</span>)));
connect(<span class="operator">&amp;</span>d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">,</span> SIGNAL(dataChanged(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span><span class="operator">,</span><span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span>))
<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(handleDataChanged(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span><span class="operator">,</span><span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span><span class="operator">&amp;</span>)));
connect(<span class="operator">&amp;</span>d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">,</span> SIGNAL(modelReset())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(refresh()));
connect(<span class="operator">&amp;</span>d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">,</span> SIGNAL(layoutChanged())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(refresh()));
}
<span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span><span class="operator">~</span><span class="type">QDeclarativeFolderListModel</span>()
{
<span class="keyword">delete</span> d;
}
<span class="type"><a href="qvariant.html">QVariant</a></span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>data(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>index<span class="operator">,</span> <span class="type">int</span> role) <span class="keyword">const</span>
{
<span class="type"><a href="qvariant.html">QVariant</a></span> rv;
<span class="type"><a href="qmodelindex.html">QModelIndex</a></span> modelIndex <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>index(index<span class="operator">.</span>row()<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex);
<span class="keyword">if</span> (modelIndex<span class="operator">.</span>isValid()) {
<span class="keyword">if</span> (role <span class="operator">=</span><span class="operator">=</span> FileNameRole)
rv <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>data(modelIndex<span class="operator">,</span> <span class="type"><a href="qdirmodel.html">QDirModel</a></span><span class="operator">::</span>FileNameRole)<span class="operator">.</span>toString();
<span class="keyword">else</span> <span class="keyword">if</span> (role <span class="operator">=</span><span class="operator">=</span> FilePathRole)
rv <span class="operator">=</span> <span class="type"><a href="qurl.html">QUrl</a></span><span class="operator">::</span>fromLocalFile(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>data(modelIndex<span class="operator">,</span> <span class="type"><a href="qdirmodel.html">QDirModel</a></span><span class="operator">::</span>FilePathRole)<span class="operator">.</span>toString());
}
<span class="keyword">return</span> rv;
}
<span class="comment">/*!
\qmlproperty int FolderListModel::count
Returns the number of items in the current folder that match the
filter criteria.
*/</span>
<span class="type">int</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>rowCount(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>parent) <span class="keyword">const</span>
{
Q_UNUSED(parent);
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>count;
}
<span class="comment">/*!
\qmlproperty string FolderListModel::folder
The \a folder property holds a URL for the folder that the model is
currently providing.
The value is a URL expressed as a string, and must be a \c file: or \c qrc:
URL, or a relative URL.
By default, the value is an invalid URL.
*/</span>
<span class="type"><a href="qurl.html">QUrl</a></span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>folder() <span class="keyword">const</span>
{
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>folder;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setFolder(<span class="keyword">const</span> <span class="type"><a href="qurl.html">QUrl</a></span> <span class="operator">&amp;</span>folder)
{
<span class="keyword">if</span> (folder <span class="operator">=</span><span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folder)
<span class="keyword">return</span>;
<span class="type"><a href="qmodelindex.html">QModelIndex</a></span> index <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>index(folder<span class="operator">.</span>toLocalFile());
<span class="keyword">if</span> ((index<span class="operator">.</span>isValid() <span class="operator">&amp;</span><span class="operator">&amp;</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>isDir(index)) <span class="operator">|</span><span class="operator">|</span> folder<span class="operator">.</span>toLocalFile()<span class="operator">.</span>isEmpty()) {
d<span class="operator">-</span><span class="operator">&gt;</span>folder <span class="operator">=</span> folder;
<span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>invokeMethod(<span class="keyword">this</span><span class="operator">,</span> <span class="string">&quot;refresh&quot;</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection);
<span class="keyword">emit</span> folderChanged();
}
}
<span class="comment">/*!
\qmlproperty url FolderListModel::parentFolder
Returns the URL of the parent of of the current \l folder.
*/</span>
<span class="type"><a href="qurl.html">QUrl</a></span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>parentFolder() <span class="keyword">const</span>
{
<span class="type"><a href="qstring.html">QString</a></span> localFile <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>toLocalFile();
<span class="keyword">if</span> (<span class="operator">!</span>localFile<span class="operator">.</span>isEmpty()) {
<span class="type"><a href="qdir.html">QDir</a></span> dir(localFile);
<span class="preprocessor">#if defined(Q_OS_SYMBIAN) || defined(Q_OS_WIN)</span>
<span class="keyword">if</span> (dir<span class="operator">.</span>isRoot())
dir<span class="operator">.</span>setPath(<span class="string">&quot;&quot;</span>);
<span class="keyword">else</span>
<span class="preprocessor">#endif</span>
dir<span class="operator">.</span>cdUp();
localFile <span class="operator">=</span> dir<span class="operator">.</span>path();
} <span class="keyword">else</span> {
<span class="type">int</span> pos <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>path()<span class="operator">.</span>lastIndexOf(QLatin1Char(<span class="char">'/'</span>));
<span class="keyword">if</span> (pos <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
<span class="keyword">return</span> <span class="type"><a href="qurl.html">QUrl</a></span>();
localFile <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>path()<span class="operator">.</span>left(pos);
}
<span class="keyword">return</span> <span class="type"><a href="qurl.html">QUrl</a></span><span class="operator">::</span>fromLocalFile(localFile);
}
<span class="comment">/*!
\qmlproperty list&lt;string&gt; FolderListModel::nameFilters
The \a nameFilters property contains a list of file name filters.
The filters may include the ? and * wildcards.
The example below filters on PNG and JPEG files:
\qml
FolderListModel {
nameFilters: [ &quot;*.png&quot;, &quot;*.jpg&quot; ]
}
\endqml
\note Directories are not excluded by filters.
*/</span>
<span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>nameFilters() <span class="keyword">const</span>
{
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>nameFilters;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setNameFilters(<span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="operator">&amp;</span>filters)
{
d<span class="operator">-</span><span class="operator">&gt;</span>nameFilters <span class="operator">=</span> filters;
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setNameFilters(d<span class="operator">-</span><span class="operator">&gt;</span>nameFilters);
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>classBegin()
{
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>componentComplete()
{
<span class="keyword">if</span> (<span class="operator">!</span>d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>isValid() <span class="operator">|</span><span class="operator">|</span> d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>toLocalFile()<span class="operator">.</span>isEmpty() <span class="operator">|</span><span class="operator">|</span> <span class="operator">!</span><span class="type"><a href="qdir.html">QDir</a></span>()<span class="operator">.</span>exists(d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>toLocalFile()))
setFolder(<span class="type"><a href="qurl.html">QUrl</a></span>(QLatin1String(<span class="string">&quot;file://&quot;</span>)<span class="operator">+</span><span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>currentPath()));
<span class="keyword">if</span> (<span class="operator">!</span>d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex<span class="operator">.</span>isValid())
<span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>invokeMethod(<span class="keyword">this</span><span class="operator">,</span> <span class="string">&quot;refresh&quot;</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection);
}
<span class="comment">/*!
\qmlproperty enumeration FolderListModel::sortField
The \a sortField property contains field to use for sorting. sortField
may be one of:
\list
\o Unsorted - no sorting is applied. The order is system default.
\o Name - sort by filename
\o Time - sort by time modified
\o Size - sort by file size
\o Type - sort by file type (extension)
\endlist
\sa sortReversed
*/</span>
<span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>SortField <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>sortField() <span class="keyword">const</span>
{
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>sortField;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setSortField(SortField field)
{
<span class="keyword">if</span> (field <span class="operator">!</span><span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>sortField) {
d<span class="operator">-</span><span class="operator">&gt;</span>sortField <span class="operator">=</span> field;
d<span class="operator">-</span><span class="operator">&gt;</span>updateSorting();
}
}
<span class="comment">/*!
\qmlproperty bool FolderListModel::sortReversed
If set to true, reverses the sort order. The default is false.
\sa sortField
*/</span>
<span class="type">bool</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>sortReversed() <span class="keyword">const</span>
{
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>sortReversed;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setSortReversed(<span class="type">bool</span> rev)
{
<span class="keyword">if</span> (rev <span class="operator">!</span><span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>sortReversed) {
d<span class="operator">-</span><span class="operator">&gt;</span>sortReversed <span class="operator">=</span> rev;
d<span class="operator">-</span><span class="operator">&gt;</span>updateSorting();
}
}
<span class="comment">/*!
\qmlmethod bool FolderListModel::isFolder(int index)
Returns true if the entry \a index is a folder; otherwise
returns false.
*/</span>
<span class="type">bool</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>isFolder(<span class="type">int</span> index) <span class="keyword">const</span>
{
<span class="keyword">if</span> (index <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) {
<span class="type"><a href="qmodelindex.html">QModelIndex</a></span> idx <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>index(index<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex);
<span class="keyword">if</span> (idx<span class="operator">.</span>isValid())
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>isDir(idx);
}
<span class="keyword">return</span> <span class="keyword">false</span>;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>refresh()
{
d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex <span class="operator">=</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span>();
<span class="keyword">if</span> (d<span class="operator">-</span><span class="operator">&gt;</span>count) {
<span class="keyword">emit</span> beginRemoveRows(<span class="type"><a href="qmodelindex.html">QModelIndex</a></span>()<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> d<span class="operator">-</span><span class="operator">&gt;</span>count<span class="operator">-</span><span class="number">1</span>);
d<span class="operator">-</span><span class="operator">&gt;</span>count <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">emit</span> endRemoveRows();
}
d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>index(d<span class="operator">-</span><span class="operator">&gt;</span>folder<span class="operator">.</span>toLocalFile());
<span class="type">int</span> newcount <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>rowCount(d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex);
<span class="keyword">if</span> (newcount) {
<span class="keyword">emit</span> beginInsertRows(<span class="type"><a href="qmodelindex.html">QModelIndex</a></span>()<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> newcount<span class="operator">-</span><span class="number">1</span>);
d<span class="operator">-</span><span class="operator">&gt;</span>count <span class="operator">=</span> newcount;
<span class="keyword">emit</span> endInsertRows();
}
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>inserted(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>index<span class="operator">,</span> <span class="type">int</span> start<span class="operator">,</span> <span class="type">int</span> end)
{
<span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex) {
<span class="keyword">emit</span> beginInsertRows(<span class="type"><a href="qmodelindex.html">QModelIndex</a></span>()<span class="operator">,</span> start<span class="operator">,</span> end);
d<span class="operator">-</span><span class="operator">&gt;</span>count <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>rowCount(d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex);
<span class="keyword">emit</span> endInsertRows();
}
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>removed(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>index<span class="operator">,</span> <span class="type">int</span> start<span class="operator">,</span> <span class="type">int</span> end)
{
<span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex) {
<span class="keyword">emit</span> beginRemoveRows(<span class="type"><a href="qmodelindex.html">QModelIndex</a></span>()<span class="operator">,</span> start<span class="operator">,</span> end);
d<span class="operator">-</span><span class="operator">&gt;</span>count <span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>rowCount(d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex);
<span class="keyword">emit</span> endRemoveRows();
}
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>handleDataChanged(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>start<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>end)
{
<span class="keyword">if</span> (start<span class="operator">.</span>parent() <span class="operator">=</span><span class="operator">=</span> d<span class="operator">-</span><span class="operator">&gt;</span>folderIndex)
<span class="keyword">emit</span> dataChanged(index(start<span class="operator">.</span>row()<span class="operator">,</span><span class="number">0</span>)<span class="operator">,</span> index(end<span class="operator">.</span>row()<span class="operator">,</span><span class="number">0</span>));
}
<span class="comment">/*!
\qmlproperty bool FolderListModel::showDirs
If true, directories are included in the model; otherwise only files
are included.
By default, this property is true.
Note that the nameFilters are not applied to directories.
\sa showDotAndDotDot
*/</span>
<span class="type">bool</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>showDirs() <span class="keyword">const</span>
{
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>AllDirs;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setShowDirs(<span class="type">bool</span> on)
{
<span class="keyword">if</span> (<span class="operator">!</span>(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>AllDirs) <span class="operator">=</span><span class="operator">=</span> <span class="operator">!</span>on)
<span class="keyword">return</span>;
<span class="keyword">if</span> (on)
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>AllDirs <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Drives);
<span class="keyword">else</span>
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="operator">~</span>(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>AllDirs <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Drives));
}
<span class="comment">/*!
\qmlproperty bool FolderListModel::showDotAndDotDot
If true, the &quot;.&quot; and &quot;..&quot; directories are included in the model; otherwise
they are excluded.
By default, this property is false.
\sa showDirs
*/</span>
<span class="type">bool</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>showDotAndDotDot() <span class="keyword">const</span>
{
<span class="keyword">return</span> <span class="operator">!</span>(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>NoDotAndDotDot);
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setShowDotAndDotDot(<span class="type">bool</span> on)
{
<span class="keyword">if</span> (<span class="operator">!</span>(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>NoDotAndDotDot) <span class="operator">=</span><span class="operator">=</span> on)
<span class="keyword">return</span>;
<span class="keyword">if</span> (on)
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="operator">~</span><span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>NoDotAndDotDot);
<span class="keyword">else</span>
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>NoDotAndDotDot);
}
<span class="comment">/*!
\qmlproperty bool FolderListModel::showOnlyReadable
If true, only readable files and directories are shown; otherwise all files
and directories are shown.
By default, this property is false.
\sa showDirs
*/</span>
<span class="type">bool</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>showOnlyReadable() <span class="keyword">const</span>
{
<span class="keyword">return</span> d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Readable;
}
<span class="type">void</span> <span class="type">QDeclarativeFolderListModel</span><span class="operator">::</span>setShowOnlyReadable(<span class="type">bool</span> on)
{
<span class="keyword">if</span> (<span class="operator">!</span>(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Readable) <span class="operator">=</span><span class="operator">=</span> <span class="operator">!</span>on)
<span class="keyword">return</span>;
<span class="keyword">if</span> (on)
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Readable);
<span class="keyword">else</span>
d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>setFilter(d<span class="operator">-</span><span class="operator">&gt;</span>model<span class="operator">.</span>filter() <span class="operator">&amp;</span> <span class="operator">~</span><span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Readable);
}
<span class="preprocessor">#endif // QT_NO_DIRMODEL</span></pre>
</div>
<!-- @@@src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp -->
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