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<h1 class="title">mimetypemodel.cpp Example File</h1>
<span class="subtitle">mimetypes/mimetypebrowser/mimetypemodel.cpp</span>
<!-- $$$mimetypes/mimetypebrowser/mimetypemodel.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "mimetypemodel.h"</span>
<span class="preprocessor">#include <QIcon></span>
<span class="preprocessor">#include <QDebug></span>
<span class="preprocessor">#include <QMimeDatabase></span>
<span class="preprocessor">#include <QTextStream></span>
<span class="preprocessor">#include <QVariant></span>
<span class="preprocessor">#include <algorithm></span>
Q_DECLARE_METATYPE(<span class="type"><a href="qmimetype.html">QMimeType</a></span>)
<span class="keyword">typedef</span> <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="../qtgui/qstandarditem.html">QStandardItem</a></span> <span class="operator">*</span><span class="operator">></span> StandardItemList;
<span class="keyword">enum</span> { mimeTypeRole <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> iconQueriedRole <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole <span class="operator">+</span> <span class="number">2</span> };
bool <span class="keyword">operator</span><span class="operator"><</span>(<span class="keyword">const</span> <span class="type"><a href="qmimetype.html">QMimeType</a></span> <span class="operator">&</span>t1<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qmimetype.html">QMimeType</a></span> <span class="operator">&</span>t2)
{
<span class="keyword">return</span> t1<span class="operator">.</span>name() <span class="operator"><</span> t2<span class="operator">.</span>name();
}
<span class="keyword">static</span> StandardItemList createRow(<span class="keyword">const</span> <span class="type"><a href="qmimetype.html">QMimeType</a></span> <span class="operator">&</span>t)
{
<span class="keyword">const</span> <span class="type"><a href="qvariant.html">QVariant</a></span> v <span class="operator">=</span> <span class="type"><a href="qvariant.html">QVariant</a></span><span class="operator">::</span>fromValue(t);
<span class="type"><a href="../qtgui/qstandarditem.html">QStandardItem</a></span> <span class="operator">*</span>nameItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtgui/qstandarditem.html">QStandardItem</a></span>(t<span class="operator">.</span>name());
<span class="keyword">const</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemFlags flags <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemIsSelectable <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemIsEnabled;
nameItem<span class="operator">-</span><span class="operator">></span>setData(v<span class="operator">,</span> mimeTypeRole);
nameItem<span class="operator">-</span><span class="operator">></span>setData(<span class="type"><a href="qvariant.html">QVariant</a></span>(<span class="keyword">false</span>)<span class="operator">,</span> iconQueriedRole);
nameItem<span class="operator">-</span><span class="operator">></span>setFlags(flags);
nameItem<span class="operator">-</span><span class="operator">></span>setToolTip(t<span class="operator">.</span>comment());
<span class="keyword">return</span> StandardItemList{nameItem};
}
MimetypeModel<span class="operator">::</span>MimetypeModel(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="../qtgui/qstandarditemmodel.html">QStandardItemModel</a></span>(<span class="number">0</span><span class="operator">,</span> ColumnCount<span class="operator">,</span> parent)
{
setHorizontalHeaderLabels(<span class="type"><a href="qstringlist.html">QStringList</a></span>{tr(<span class="string">"Name"</span>)});
populate();
}
<span class="type"><a href="qvariant.html">QVariant</a></span> MimetypeModel<span class="operator">::</span>data(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span>index<span class="operator">,</span> <span class="type">int</span> role) <span class="keyword">const</span>
{
<span class="keyword">if</span> (role <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DecorationRole <span class="operator">|</span><span class="operator">|</span> <span class="operator">!</span>index<span class="operator">.</span>isValid() <span class="operator">|</span><span class="operator">|</span> index<span class="operator">.</span>data(iconQueriedRole)<span class="operator">.</span>toBool())
<span class="keyword">return</span> <span class="type"><a href="../qtgui/qstandarditemmodel.html">QStandardItemModel</a></span><span class="operator">::</span>data(index<span class="operator">,</span> role);
<span class="type"><a href="../qtgui/qstandarditem.html">QStandardItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> itemFromIndex(index);
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> iconName <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>data(mimeTypeRole)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qmimetype.html">QMimeType</a></span><span class="operator">></span>()<span class="operator">.</span>iconName();
<span class="keyword">if</span> (<span class="operator">!</span>iconName<span class="operator">.</span>isEmpty())
item<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(iconName));
item<span class="operator">-</span><span class="operator">></span>setData(<span class="type"><a href="qvariant.html">QVariant</a></span>(<span class="keyword">true</span>)<span class="operator">,</span> iconQueriedRole);
<span class="keyword">return</span> item<span class="operator">-</span><span class="operator">></span>icon();
}
<span class="type"><a href="qmimetype.html">QMimeType</a></span> MimetypeModel<span class="operator">::</span>mimeType(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span>index) <span class="keyword">const</span>
{
<span class="keyword">return</span> index<span class="operator">.</span>data(mimeTypeRole)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qmimetype.html">QMimeType</a></span><span class="operator">></span>();
}
<span class="type">void</span> MimetypeModel<span class="operator">::</span>populate()
{
<span class="keyword">typedef</span> <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qmimetype.html">QMimeType</a></span><span class="operator">></span><span class="operator">::</span>Iterator Iterator;
<span class="type"><a href="qmimedatabase.html">QMimeDatabase</a></span> mimeDatabase;
<span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qmimetype.html">QMimeType</a></span><span class="operator">></span> allTypes <span class="operator">=</span> mimeDatabase<span class="operator">.</span>allMimeTypes();
<span class="comment">// Move top level types to rear end of list, sort this partition,</span>
<span class="comment">// create top level items and truncate the list.</span>
Iterator end <span class="operator">=</span> allTypes<span class="operator">.</span>end();
<span class="keyword">const</span> Iterator topLevelStart <span class="operator">=</span>
std<span class="operator">::</span>stable_partition(allTypes<span class="operator">.</span>begin()<span class="operator">,</span> end<span class="operator">,</span>
<span class="operator">[</span><span class="operator">]</span>(<span class="keyword">const</span> <span class="type"><a href="qmimetype.html">QMimeType</a></span> <span class="operator">&</span>t) { <span class="keyword">return</span> <span class="operator">!</span>t<span class="operator">.</span>parentMimeTypes()<span class="operator">.</span>isEmpty(); });
std<span class="operator">::</span>stable_sort(topLevelStart<span class="operator">,</span> end);
<span class="keyword">for</span> (Iterator it <span class="operator">=</span> topLevelStart; it <span class="operator">!</span><span class="operator">=</span> end; <span class="operator">+</span><span class="operator">+</span>it) {
<span class="keyword">const</span> StandardItemList row <span class="operator">=</span> createRow(<span class="operator">*</span>it);
appendRow(row);
m_nameIndexHash<span class="operator">.</span>insert(it<span class="operator">-</span><span class="operator">></span>name()<span class="operator">,</span> indexFromItem(row<span class="operator">.</span>constFirst()));
}
allTypes<span class="operator">.</span>erase(topLevelStart<span class="operator">,</span> end);
<span class="keyword">while</span> (<span class="operator">!</span>allTypes<span class="operator">.</span>isEmpty()) {
<span class="comment">// Find a type inheriting one that is already in the model.</span>
end <span class="operator">=</span> allTypes<span class="operator">.</span>end();
<span class="keyword">auto</span> nameIndexIt <span class="operator">=</span> m_nameIndexHash<span class="operator">.</span>constEnd();
<span class="keyword">for</span> (Iterator it <span class="operator">=</span> allTypes<span class="operator">.</span>begin(); it <span class="operator">!</span><span class="operator">=</span> end; <span class="operator">+</span><span class="operator">+</span>it) {
nameIndexIt <span class="operator">=</span> m_nameIndexHash<span class="operator">.</span>constFind(it<span class="operator">-</span><span class="operator">></span>parentMimeTypes()<span class="operator">.</span>constFirst());
<span class="keyword">if</span> (nameIndexIt <span class="operator">!</span><span class="operator">=</span> m_nameIndexHash<span class="operator">.</span>constEnd())
<span class="keyword">break</span>;
}
<span class="keyword">if</span> (nameIndexIt <span class="operator">=</span><span class="operator">=</span> m_nameIndexHash<span class="operator">.</span>constEnd()) {
<a href="qtglobal.html#qWarning">qWarning</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Orphaned mime types:"</span> <span class="operator"><</span><span class="operator"><</span> allTypes;
<span class="keyword">break</span>;
}
<span class="comment">// Move types inheriting the parent type to rear end of list, sort this partition,</span>
<span class="comment">// append the items to parent and truncate the list.</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>parentName <span class="operator">=</span> nameIndexIt<span class="operator">.</span>key();
<span class="keyword">const</span> Iterator start <span class="operator">=</span>
std<span class="operator">::</span>stable_partition(allTypes<span class="operator">.</span>begin()<span class="operator">,</span> end<span class="operator">,</span> <span class="operator">[</span>parentName<span class="operator">]</span>(<span class="keyword">const</span> <span class="type"><a href="qmimetype.html">QMimeType</a></span> <span class="operator">&</span>t)
{ <span class="keyword">return</span> <span class="operator">!</span>t<span class="operator">.</span>parentMimeTypes()<span class="operator">.</span>contains(parentName); });
std<span class="operator">::</span>stable_sort(start<span class="operator">,</span> end);
<span class="type"><a href="../qtgui/qstandarditem.html">QStandardItem</a></span> <span class="operator">*</span>parentItem <span class="operator">=</span> itemFromIndex(nameIndexIt<span class="operator">.</span>value());
<span class="keyword">for</span> (Iterator it <span class="operator">=</span> start; it <span class="operator">!</span><span class="operator">=</span> end; <span class="operator">+</span><span class="operator">+</span>it) {
<span class="keyword">const</span> StandardItemList row <span class="operator">=</span> createRow(<span class="operator">*</span>it);
parentItem<span class="operator">-</span><span class="operator">></span>appendRow(row);
m_nameIndexHash<span class="operator">.</span>insert(it<span class="operator">-</span><span class="operator">></span>name()<span class="operator">,</span> indexFromItem(row<span class="operator">.</span>constFirst()));
}
allTypes<span class="operator">.</span>erase(start<span class="operator">,</span> end);
}
}
<span class="type"><a href="qtextstream.html">QTextStream</a></span> <span class="operator">&</span><span class="keyword">operator</span><span class="operator"><</span><span class="operator"><</span>(<span class="type"><a href="qtextstream.html">QTextStream</a></span> <span class="operator">&</span>stream<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="operator">&</span>list)
{
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span><span class="operator">,</span> size <span class="operator">=</span> list<span class="operator">.</span>size(); i <span class="operator"><</span> size; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="keyword">if</span> (i)
stream <span class="operator"><</span><span class="operator"><</span> <span class="string">", "</span>;
stream <span class="operator"><</span><span class="operator"><</span> list<span class="operator">.</span>at(i);
}
<span class="keyword">return</span> stream;
}
<span class="type"><a href="qstring.html">QString</a></span> MimetypeModel<span class="operator">::</span>formatMimeTypeInfo(<span class="keyword">const</span> <span class="type"><a href="qmimetype.html">QMimeType</a></span> <span class="operator">&</span>t)
{
<span class="type"><a href="qstring.html">QString</a></span> result;
<span class="type"><a href="qtextstream.html">QTextStream</a></span> str(<span class="operator">&</span>result);
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<html><head/><body><h3><center>"</span> <span class="operator"><</span><span class="operator"><</span> t<span class="operator">.</span>name() <span class="operator"><</span><span class="operator"><</span> <span class="string">"</center></h3><br><table>"</span>;
<span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="operator">&</span>aliases <span class="operator">=</span> t<span class="operator">.</span>aliases();
<span class="keyword">if</span> (<span class="operator">!</span>aliases<span class="operator">.</span>isEmpty())
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Aliases:</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">" ("</span> <span class="operator"><</span><span class="operator"><</span> aliases <span class="operator"><</span><span class="operator"><</span> <span class="char">')'</span>;
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>
<span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Comment:</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> t<span class="operator">.</span>comment() <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>
<span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Icon name:</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> t<span class="operator">.</span>iconName() <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>
<span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Generic icon name</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> t<span class="operator">.</span>genericIconName() <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</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> t<span class="operator">.</span>filterString();
<span class="keyword">if</span> (<span class="operator">!</span>filter<span class="operator">.</span>isEmpty())
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Filter:</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> t<span class="operator">.</span>filterString() <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>;
<span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="operator">&</span>patterns <span class="operator">=</span> t<span class="operator">.</span>globPatterns();
<span class="keyword">if</span> (<span class="operator">!</span>patterns<span class="operator">.</span>isEmpty())
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Glob patterns:</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> patterns <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>;
<span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="operator">&</span>parentMimeTypes <span class="operator">=</span> t<span class="operator">.</span>parentMimeTypes();
<span class="keyword">if</span> (<span class="operator">!</span>parentMimeTypes<span class="operator">.</span>isEmpty())
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Parent types:</td><td>"</span> <span class="operator"><</span><span class="operator"><</span> t<span class="operator">.</span>parentMimeTypes() <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>;
<span class="type"><a href="qstringlist.html">QStringList</a></span> suffixes <span class="operator">=</span> t<span class="operator">.</span>suffixes();
<span class="keyword">if</span> (<span class="operator">!</span>suffixes<span class="operator">.</span>isEmpty()) {
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<tr><td>Suffixes:</td><td>"</span>;
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>preferredSuffix <span class="operator">=</span> t<span class="operator">.</span>preferredSuffix();
<span class="keyword">if</span> (<span class="operator">!</span>preferredSuffix<span class="operator">.</span>isEmpty()) {
suffixes<span class="operator">.</span>removeOne(preferredSuffix);
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"<b>"</span> <span class="operator"><</span><span class="operator"><</span> preferredSuffix <span class="operator"><</span><span class="operator"><</span> <span class="string">"</b> "</span>;
}
str <span class="operator"><</span><span class="operator"><</span> suffixes <span class="operator"><</span><span class="operator"><</span> <span class="string">"</td></tr>"</span>;
}
str <span class="operator"><</span><span class="operator"><</span> <span class="string">"</table></body></html>"</span>;
<span class="keyword">return</span> result;
}
</pre>
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<!-- @@@mimetypes/mimetypebrowser/mimetypemodel.cpp -->
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Documentation contributions included herein are the copyrights of
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
d5e62c01ae8d1e579463c6a871dd44bf
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files
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837
