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<?xml version="1.0" encoding="UTF-8"?>
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<h1 class="title">xbeltree.cpp Example File</h1>
<span class="small-subtitle">xml/dombookmarks/xbeltree.cpp</span>
<!-- $$$xml/dombookmarks/xbeltree.cpp-description -->
<div class="descr"> <a name="details"></a>
<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.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;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
** &quot;AS IS&quot; 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.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &quot;xbeltree.h&quot;</span>
XbelTree<span class="operator">::</span>XbelTree(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qtreewidget.html">QTreeWidget</a></span>(parent)
{
<span class="type"><a href="qstringlist.html">QStringList</a></span> labels;
labels <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;Title&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;Location&quot;</span>);
header()<span class="operator">-</span><span class="operator">&gt;</span>setResizeMode(<span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Stretch);
setHeaderLabels(labels);
folderIcon<span class="operator">.</span>addPixmap(style()<span class="operator">-</span><span class="operator">&gt;</span>standardPixmap(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>SP_DirClosedIcon)<span class="operator">,</span>
<span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Off);
folderIcon<span class="operator">.</span>addPixmap(style()<span class="operator">-</span><span class="operator">&gt;</span>standardPixmap(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>SP_DirOpenIcon)<span class="operator">,</span>
<span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>On);
bookmarkIcon<span class="operator">.</span>addPixmap(style()<span class="operator">-</span><span class="operator">&gt;</span>standardPixmap(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>SP_FileIcon));
}
<span class="type">bool</span> XbelTree<span class="operator">::</span>read(<span class="type"><a href="qiodevice.html">QIODevice</a></span> <span class="operator">*</span>device)
{
<span class="type"><a href="qstring.html">QString</a></span> errorStr;
<span class="type">int</span> errorLine;
<span class="type">int</span> errorColumn;
<span class="keyword">if</span> (<span class="operator">!</span>domDocument<span class="operator">.</span>setContent(device<span class="operator">,</span> <span class="keyword">true</span><span class="operator">,</span> <span class="operator">&amp;</span>errorStr<span class="operator">,</span> <span class="operator">&amp;</span>errorLine<span class="operator">,</span>
<span class="operator">&amp;</span>errorColumn)) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(window()<span class="operator">,</span> tr(<span class="string">&quot;DOM Bookmarks&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Parse error at line %1, column %2:\n%3&quot;</span>)
<span class="operator">.</span>arg(errorLine)
<span class="operator">.</span>arg(errorColumn)
<span class="operator">.</span>arg(errorStr));
<span class="keyword">return</span> <span class="keyword">false</span>;
}
<span class="type"><a href="qdomelement.html">QDomElement</a></span> root <span class="operator">=</span> domDocument<span class="operator">.</span>documentElement();
<span class="keyword">if</span> (root<span class="operator">.</span>tagName() <span class="operator">!</span><span class="operator">=</span> <span class="string">&quot;xbel&quot;</span>) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(window()<span class="operator">,</span> tr(<span class="string">&quot;DOM Bookmarks&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;The file is not an XBEL file.&quot;</span>));
<span class="keyword">return</span> <span class="keyword">false</span>;
} <span class="keyword">else</span> <span class="keyword">if</span> (root<span class="operator">.</span>hasAttribute(<span class="string">&quot;version&quot;</span>)
<span class="operator">&amp;</span><span class="operator">&amp;</span> root<span class="operator">.</span>attribute(<span class="string">&quot;version&quot;</span>) <span class="operator">!</span><span class="operator">=</span> <span class="string">&quot;1.0&quot;</span>) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(window()<span class="operator">,</span> tr(<span class="string">&quot;DOM Bookmarks&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;The file is not an XBEL version 1.0 &quot;</span>
<span class="string">&quot;file.&quot;</span>));
<span class="keyword">return</span> <span class="keyword">false</span>;
}
clear();
disconnect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(itemChanged(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(updateDomElement(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type">int</span>)));
<span class="type"><a href="qdomelement.html">QDomElement</a></span> child <span class="operator">=</span> root<span class="operator">.</span>firstChildElement(<span class="string">&quot;folder&quot;</span>);
<span class="keyword">while</span> (<span class="operator">!</span>child<span class="operator">.</span>isNull()) {
parseFolderElement(child);
child <span class="operator">=</span> child<span class="operator">.</span>nextSiblingElement(<span class="string">&quot;folder&quot;</span>);
}
connect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(itemChanged(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(updateDomElement(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type">int</span>)));
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="type">bool</span> XbelTree<span class="operator">::</span>write(<span class="type"><a href="qiodevice.html">QIODevice</a></span> <span class="operator">*</span>device)
{
<span class="keyword">const</span> <span class="type">int</span> IndentSize <span class="operator">=</span> <span class="number">4</span>;
<span class="type"><a href="qtextstream.html">QTextStream</a></span> out(device);
domDocument<span class="operator">.</span>save(out<span class="operator">,</span> IndentSize);
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="type">void</span> XbelTree<span class="operator">::</span>updateDomElement(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> <span class="type">int</span> column)
{
<span class="type"><a href="qdomelement.html">QDomElement</a></span> element <span class="operator">=</span> domElementForItem<span class="operator">.</span>value(item);
<span class="keyword">if</span> (<span class="operator">!</span>element<span class="operator">.</span>isNull()) {
<span class="keyword">if</span> (column <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) {
<span class="type"><a href="qdomelement.html">QDomElement</a></span> oldTitleElement <span class="operator">=</span> element<span class="operator">.</span>firstChildElement(<span class="string">&quot;title&quot;</span>);
<span class="type"><a href="qdomelement.html">QDomElement</a></span> newTitleElement <span class="operator">=</span> domDocument<span class="operator">.</span>createElement(<span class="string">&quot;title&quot;</span>);
<span class="type"><a href="qdomtext.html">QDomText</a></span> newTitleText <span class="operator">=</span> domDocument<span class="operator">.</span>createTextNode(item<span class="operator">-</span><span class="operator">&gt;</span>text(<span class="number">0</span>));
newTitleElement<span class="operator">.</span>appendChild(newTitleText);
element<span class="operator">.</span>replaceChild(newTitleElement<span class="operator">,</span> oldTitleElement);
} <span class="keyword">else</span> {
<span class="keyword">if</span> (element<span class="operator">.</span>tagName() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;bookmark&quot;</span>)
element<span class="operator">.</span>setAttribute(<span class="string">&quot;href&quot;</span><span class="operator">,</span> item<span class="operator">-</span><span class="operator">&gt;</span>text(<span class="number">1</span>));
}
}
}
<span class="type">void</span> XbelTree<span class="operator">::</span>parseFolderElement(<span class="keyword">const</span> <span class="type"><a href="qdomelement.html">QDomElement</a></span> <span class="operator">&amp;</span>element<span class="operator">,</span>
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parentItem)
{
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> createItem(element<span class="operator">,</span> parentItem);
<span class="type"><a href="qstring.html">QString</a></span> title <span class="operator">=</span> element<span class="operator">.</span>firstChildElement(<span class="string">&quot;title&quot;</span>)<span class="operator">.</span>text();
<span class="keyword">if</span> (title<span class="operator">.</span>isEmpty())
title <span class="operator">=</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">::</span>tr(<span class="string">&quot;Folder&quot;</span>);
item<span class="operator">-</span><span class="operator">&gt;</span>setFlags(item<span class="operator">-</span><span class="operator">&gt;</span>flags() <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemIsEditable);
item<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="number">0</span><span class="operator">,</span> folderIcon);
item<span class="operator">-</span><span class="operator">&gt;</span>setText(<span class="number">0</span><span class="operator">,</span> title);
<span class="type">bool</span> folded <span class="operator">=</span> (element<span class="operator">.</span>attribute(<span class="string">&quot;folded&quot;</span>) <span class="operator">!</span><span class="operator">=</span> <span class="string">&quot;no&quot;</span>);
setItemExpanded(item<span class="operator">,</span> <span class="operator">!</span>folded);
<span class="type"><a href="qdomelement.html">QDomElement</a></span> child <span class="operator">=</span> element<span class="operator">.</span>firstChildElement();
<span class="keyword">while</span> (<span class="operator">!</span>child<span class="operator">.</span>isNull()) {
<span class="keyword">if</span> (child<span class="operator">.</span>tagName() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;folder&quot;</span>) {
parseFolderElement(child<span class="operator">,</span> item);
} <span class="keyword">else</span> <span class="keyword">if</span> (child<span class="operator">.</span>tagName() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;bookmark&quot;</span>) {
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>childItem <span class="operator">=</span> createItem(child<span class="operator">,</span> item);
<span class="type"><a href="qstring.html">QString</a></span> title <span class="operator">=</span> child<span class="operator">.</span>firstChildElement(<span class="string">&quot;title&quot;</span>)<span class="operator">.</span>text();
<span class="keyword">if</span> (title<span class="operator">.</span>isEmpty())
title <span class="operator">=</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">::</span>tr(<span class="string">&quot;Folder&quot;</span>);
childItem<span class="operator">-</span><span class="operator">&gt;</span>setFlags(item<span class="operator">-</span><span class="operator">&gt;</span>flags() <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemIsEditable);
childItem<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="number">0</span><span class="operator">,</span> bookmarkIcon);
childItem<span class="operator">-</span><span class="operator">&gt;</span>setText(<span class="number">0</span><span class="operator">,</span> title);
childItem<span class="operator">-</span><span class="operator">&gt;</span>setText(<span class="number">1</span><span class="operator">,</span> child<span class="operator">.</span>attribute(<span class="string">&quot;href&quot;</span>));
} <span class="keyword">else</span> <span class="keyword">if</span> (child<span class="operator">.</span>tagName() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;separator&quot;</span>) {
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>childItem <span class="operator">=</span> createItem(child<span class="operator">,</span> item);
childItem<span class="operator">-</span><span class="operator">&gt;</span>setFlags(item<span class="operator">-</span><span class="operator">&gt;</span>flags() <span class="operator">&amp;</span> <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>ItemIsEditable));
childItem<span class="operator">-</span><span class="operator">&gt;</span>setText(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="number">30</span><span class="operator">,</span> <span class="number">0xB7</span>));
}
child <span class="operator">=</span> child<span class="operator">.</span>nextSiblingElement();
}
}
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>XbelTree<span class="operator">::</span>createItem(<span class="keyword">const</span> <span class="type"><a href="qdomelement.html">QDomElement</a></span> <span class="operator">&amp;</span>element<span class="operator">,</span>
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parentItem)
{
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item;
<span class="keyword">if</span> (parentItem) {
item <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>(parentItem);
} <span class="keyword">else</span> {
item <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>(<span class="keyword">this</span>);
}
domElementForItem<span class="operator">.</span>insert(item<span class="operator">,</span> element);
<span class="keyword">return</span> item;
}</pre>
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<!-- @@@xml/dombookmarks/xbeltree.cpp -->
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