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<h1 class="title">findfiledialog.cpp Example File</h1>
<span class="subtitle">simpletextviewer/findfiledialog.cpp</span>
<!-- $$$simpletextviewer/findfiledialog.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** This file is part of the examples of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:BSD$
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**
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** modification, are permitted provided that the following conditions are
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<span class="preprocessor">#include "assistant.h"</span>
<span class="preprocessor">#include "findfiledialog.h"</span>
<span class="preprocessor">#include "textedit.h"</span>
<span class="preprocessor">#include <QComboBox></span>
<span class="preprocessor">#include <QDialogButtonBox></span>
<span class="preprocessor">#include <QDir></span>
<span class="preprocessor">#include <QFileDialog></span>
<span class="preprocessor">#include <QHBoxLayout></span>
<span class="preprocessor">#include <QLabel></span>
<span class="preprocessor">#include <QPushButton></span>
<span class="preprocessor">#include <QToolButton></span>
<span class="preprocessor">#include <QTreeWidget></span>
<span class="preprocessor">#include <QTreeWidgetItem></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">QDialog</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">></span>addItem(<span class="type">QDir</span><span class="operator">::</span>toNativeSeparators(<span class="type">QDir</span><span class="operator">::</span>currentPath()));
fileNameComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"*"</span>);
findFiles();
setWindowTitle(tr(<span class="string">"Find File"</span>));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>browse()
{
<span class="type">QString</span> currentDirectory <span class="operator">=</span> directoryComboBox<span class="operator">-</span><span class="operator">></span>currentText();
<span class="type">QString</span> newDirectory <span class="operator">=</span> <span class="type">QFileDialog</span><span class="operator">::</span>getExistingDirectory(<span class="keyword">this</span><span class="operator">,</span>
tr(<span class="string">"Select Directory"</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">></span>addItem(<span class="type">QDir</span><span class="operator">::</span>toNativeSeparators(newDirectory));
directoryComboBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(directoryComboBox<span class="operator">-</span><span class="operator">></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">></span>showDocumentation(<span class="string">"filedialog.html"</span>);
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>openFile(<span class="type">QTreeWidgetItem</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">></span>currentItem();
<span class="keyword">if</span> (<span class="operator">!</span>item)
<span class="keyword">return</span>;
}
<span class="type">QString</span> fileName <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>text(<span class="number">0</span>);
<span class="type">QString</span> path <span class="operator">=</span> directoryComboBox<span class="operator">-</span><span class="operator">></span>currentText() <span class="operator">+</span> <span class="type">QDir</span><span class="operator">::</span>separator();
currentEditor<span class="operator">-</span><span class="operator">></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">></span>button(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Open)<span class="operator">-</span><span class="operator">></span>setEnabled(
foundFilesTree<span class="operator">-</span><span class="operator">></span>topLevelItemCount() <span class="operator">></span> <span class="number">0</span>);
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>findFiles()
{
<span class="type">QRegExp</span> filePattern(fileNameComboBox<span class="operator">-</span><span class="operator">></span>currentText() <span class="operator">+</span> <span class="string">"*"</span>);
filePattern<span class="operator">.</span>setPatternSyntax(<span class="type">QRegExp</span><span class="operator">::</span>Wildcard);
<span class="type">QDir</span> directory(directoryComboBox<span class="operator">-</span><span class="operator">></span>currentText());
<span class="keyword">const</span> <span class="type">QStringList</span> allFiles <span class="operator">=</span> directory<span class="operator">.</span>entryList(<span class="type">QDir</span><span class="operator">::</span>Files <span class="operator">|</span> <span class="type">QDir</span><span class="operator">::</span>NoSymLinks);
<span class="type">QStringList</span> matchingFiles;
<span class="keyword">for</span> (<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>file : allFiles) {
<span class="keyword">if</span> (filePattern<span class="operator">.</span>exactMatch(file))
matchingFiles <span class="operator"><</span><span class="operator"><</span> file;
}
showFiles(matchingFiles);
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>showFiles(<span class="keyword">const</span> <span class="type">QStringList</span> <span class="operator">&</span>files)
{
foundFilesTree<span class="operator">-</span><span class="operator">></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"><</span> files<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTreeWidgetItem</span>(foundFilesTree);
item<span class="operator">-</span><span class="operator">></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">></span> <span class="number">0</span>)
foundFilesTree<span class="operator">-</span><span class="operator">></span>setCurrentItem(foundFilesTree<span class="operator">-</span><span class="operator">></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">QToolButton</span>;
browseButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"..."</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">QDialogButtonBox</span>(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Open
<span class="operator">|</span> <span class="type">QDialogButtonBox</span><span class="operator">::</span>Cancel
<span class="operator">|</span> <span class="type">QDialogButtonBox</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">QComboBox</span>;
fileNameComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QComboBox</span>;
fileNameComboBox<span class="operator">-</span><span class="operator">></span>setEditable(<span class="keyword">true</span>);
fileNameComboBox<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type">QSizePolicy</span><span class="operator">::</span>Expanding<span class="operator">,</span>
<span class="type">QSizePolicy</span><span class="operator">::</span>Preferred);
directoryComboBox<span class="operator">-</span><span class="operator">></span>setMinimumContentsLength(<span class="number">30</span>);
directoryComboBox<span class="operator">-</span><span class="operator">></span>setSizeAdjustPolicy(
<span class="type">QComboBox</span><span class="operator">::</span>AdjustToMinimumContentsLength);
directoryComboBox<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type">QSizePolicy</span><span class="operator">::</span>Expanding<span class="operator">,</span>
<span class="type">QSizePolicy</span><span class="operator">::</span>Preferred);
connect(fileNameComboBox<span class="operator">,</span> SIGNAL(editTextChanged(<span class="type">QString</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">QString</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">QTreeWidget</span>;
foundFilesTree<span class="operator">-</span><span class="operator">></span>setColumnCount(<span class="number">1</span>);
foundFilesTree<span class="operator">-</span><span class="operator">></span>setHeaderLabels(<span class="type">QStringList</span>(tr(<span class="string">"Matching Files"</span>)));
foundFilesTree<span class="operator">-</span><span class="operator">></span>setRootIsDecorated(<span class="keyword">false</span>);
foundFilesTree<span class="operator">-</span><span class="operator">></span>setSelectionMode(<span class="type">QAbstractItemView</span><span class="operator">::</span>SingleSelection);
connect(foundFilesTree<span class="operator">,</span> SIGNAL(itemActivated(<span class="type">QTreeWidgetItem</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">QTreeWidgetItem</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">QLabel</span>(tr(<span class="string">"Search in:"</span>));
fileNameLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"File name (including wildcards):"</span>));
}
<span class="type">void</span> FindFileDialog<span class="operator">::</span>createLayout()
{
<span class="type">QHBoxLayout</span> <span class="operator">*</span>fileLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>;
fileLayout<span class="operator">-</span><span class="operator">></span>addWidget(fileNameLabel);
fileLayout<span class="operator">-</span><span class="operator">></span>addWidget(fileNameComboBox);
<span class="type">QHBoxLayout</span> <span class="operator">*</span>directoryLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>;
directoryLayout<span class="operator">-</span><span class="operator">></span>addWidget(directoryLabel);
directoryLayout<span class="operator">-</span><span class="operator">></span>addWidget(directoryComboBox);
directoryLayout<span class="operator">-</span><span class="operator">></span>addWidget(browseButton);
<span class="type">QVBoxLayout</span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>;
mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(fileLayout);
mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(directoryLayout);
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(foundFilesTree);
mainLayout<span class="operator">-</span><span class="operator">></span>addStretch();
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(buttonBox);
setLayout(mainLayout);
}
</pre>
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<!-- @@@simpletextviewer/findfiledialog.cpp -->
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