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<h1 class="title">findfiledialog.cpp Example File</h1>
<span class="small-subtitle">help/simpletextviewer/findfiledialog.cpp</span>
<!-- $$$help/simpletextviewer/findfiledialog.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;QtCore/QDir&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QLayout&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QComboBox&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QTreeWidget&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QLayout&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QFileDialog&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QDialogButtonBox&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QToolButton&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QPushButton&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QLabel&gt;</span>
<span class="preprocessor">#include &quot;findfiledialog.h&quot;</span>
<span class="preprocessor">#include &quot;assistant.h&quot;</span>
<span class="preprocessor">#include &quot;textedit.h&quot;</span>
FindFileDialog<span class="operator">::</span>FindFileDialog(TextEdit <span class="operator">*</span>editor<span class="operator">,</span> Assistant <span class="operator">*</span>assistant)
: <span class="type"><a href="qdialog.html">QDialog</a></span>(editor)
{
currentAssistant <span class="operator">=</span> assistant;
currentEditor <span class="operator">=</span> editor;
createButtons();
createComboBoxes();
createFilesTree();
createLabels();
createLayout();
directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>currentPath()));
fileNameComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;*&quot;</span>);
findFiles();
setWindowTitle(tr(<span class="string">&quot;Find File&quot;</span>));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>browse()
{
<span class="type"><a href="qstring.html">QString</a></span> currentDirectory <span class="operator">=</span> directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentText();
<span class="type"><a href="qstring.html">QString</a></span> newDirectory <span class="operator">=</span> <span class="type"><a href="qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>getExistingDirectory(<span class="keyword">this</span><span class="operator">,</span>
tr(<span class="string">&quot;Select Directory&quot;</span>)<span class="operator">,</span> currentDirectory);
<span class="keyword">if</span> (<span class="operator">!</span>newDirectory<span class="operator">.</span>isEmpty()) {
directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(newDirectory));
directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>count() <span class="operator">-</span> <span class="number">1</span>);
update();
}
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>help()
{
currentAssistant<span class="operator">-</span><span class="operator">&gt;</span>showDocumentation(<span class="string">&quot;filedialog.html&quot;</span>);
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>openFile(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item)
{
<span class="keyword">if</span> (<span class="operator">!</span>item) {
item <span class="operator">=</span> foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>currentItem();
<span class="keyword">if</span> (<span class="operator">!</span>item)
<span class="keyword">return</span>;
}
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> item<span class="operator">-</span><span class="operator">&gt;</span>text(<span class="number">0</span>);
<span class="type"><a href="qstring.html">QString</a></span> path <span class="operator">=</span> directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentText() <span class="operator">+</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>separator();
currentEditor<span class="operator">-</span><span class="operator">&gt;</span>setContents(path <span class="operator">+</span> fileName);
close();
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>update()
{
findFiles();
buttonBox<span class="operator">-</span><span class="operator">&gt;</span>button(<span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>Open)<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>topLevelItemCount() <span class="operator">&gt;</span> <span class="number">0</span>);
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>findFiles()
{
<span class="type"><a href="qregexp.html">QRegExp</a></span> filePattern(fileNameComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentText() <span class="operator">+</span> <span class="string">&quot;*&quot;</span>);
filePattern<span class="operator">.</span>setPatternSyntax(<span class="type"><a href="qregexp.html">QRegExp</a></span><span class="operator">::</span>Wildcard);
<span class="type"><a href="qdir.html">QDir</a></span> directory(directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentText());
<span class="type"><a href="qstringlist.html">QStringList</a></span> allFiles <span class="operator">=</span> directory<span class="operator">.</span>entryList(<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>NoSymLinks);
<span class="type"><a href="qstringlist.html">QStringList</a></span> matchingFiles;
foreach (<span class="type"><a href="qstring.html">QString</a></span> file<span class="operator">,</span> allFiles) {
<span class="keyword">if</span> (filePattern<span class="operator">.</span>exactMatch(file))
matchingFiles <span class="operator">&lt;</span><span class="operator">&lt;</span> file;
}
showFiles(matchingFiles);
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>showFiles(<span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> <span class="operator">&amp;</span>files)
{
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>clear();
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> files<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>(foundFilesTree);
item<span class="operator">-</span><span class="operator">&gt;</span>setText(<span class="number">0</span><span class="operator">,</span> files<span class="operator">[</span>i<span class="operator">]</span>);
}
<span class="keyword">if</span> (files<span class="operator">.</span>count() <span class="operator">&gt;</span> <span class="number">0</span>)
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>setCurrentItem(foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>topLevelItem(<span class="number">0</span>));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>createButtons()
{
browseButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>;
browseButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;...&quot;</span>));
connect(browseButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(browse()));
buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span>(<span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>Open
<span class="operator">|</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>Cancel
<span class="operator">|</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>Help);
connect(buttonBox<span class="operator">,</span> SIGNAL(accepted())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(openFile()));
connect(buttonBox<span class="operator">,</span> SIGNAL(rejected())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(reject()));
connect(buttonBox<span class="operator">,</span> SIGNAL(helpRequested())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(help()));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>createComboBoxes()
{
directoryComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
fileNameComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
fileNameComboBox<span class="operator">-</span><span class="operator">&gt;</span>setEditable(<span class="keyword">true</span>);
fileNameComboBox<span class="operator">-</span><span class="operator">&gt;</span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding<span class="operator">,</span>
<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Preferred);
directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>setMinimumContentsLength(<span class="number">30</span>);
directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>setSizeAdjustPolicy(
<span class="type"><a href="qcombobox.html">QComboBox</a></span><span class="operator">::</span>AdjustToMinimumContentsLength);
directoryComboBox<span class="operator">-</span><span class="operator">&gt;</span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding<span class="operator">,</span>
<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Preferred);
connect(fileNameComboBox<span class="operator">,</span> SIGNAL(editTextChanged(<span class="type"><a href="qstring.html">QString</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(update()));
connect(directoryComboBox<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type"><a href="qstring.html">QString</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(update()));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>createFilesTree()
{
foundFilesTree <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidget.html">QTreeWidget</a></span>;
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>setColumnCount(<span class="number">1</span>);
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>setHeaderLabels(<span class="type"><a href="qstringlist.html">QStringList</a></span>(tr(<span class="string">&quot;Matching Files&quot;</span>)));
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>setRootIsDecorated(<span class="keyword">false</span>);
foundFilesTree<span class="operator">-</span><span class="operator">&gt;</span>setSelectionMode(<span class="type"><a href="qabstractitemview.html">QAbstractItemView</a></span><span class="operator">::</span>SingleSelection);
connect(foundFilesTree<span class="operator">,</span> SIGNAL(itemActivated(<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(openFile(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span>)));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>createLabels()
{
directoryLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Search in:&quot;</span>));
fileNameLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;File name (including wildcards):&quot;</span>));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>createLayout()
{
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>fileLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>;
fileLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(fileNameLabel);
fileLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(fileNameComboBox);
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>directoryLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>;
directoryLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(directoryLabel);
directoryLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(directoryComboBox);
directoryLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(browseButton);
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>;
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addLayout(fileLayout);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addLayout(directoryLayout);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(foundFilesTree);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addStretch();
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(buttonBox);
setLayout(mainLayout);
}</pre>
</div>
<!-- @@@help/simpletextviewer/findfiledialog.cpp -->
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