qt-everywhere-src-5.14.1/qtbase/examples/widgets/dialogs/findfiles/window.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://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."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtWidgets>

 #include "window.h"

 //! [17]
 enum { absoluteFileNameRole = Qt::UserRole + 1 };
 //! [17]

 //! [18]
 static inline QString fileNameOfItem(const QTableWidgetItem *item)
 {
     return item->data(absoluteFileNameRole).toString();
 }
 //! [18]

 //! [14]
 static inline void openFile(const QString &fileName)
 {
     QDesktopServices::openUrl(QUrl::fromLocalFile(fileName));
 }
 //! [14]

 //! [0]
 Window::Window(QWidget *parent)
     : QWidget(parent)
 {
     setWindowTitle(tr("Find Files"));
     QPushButton *browseButton = new QPushButton(tr("&Browse..."), this);
     connect(browseButton, &QAbstractButton::clicked, this, &Window::browse);
     findButton = new QPushButton(tr("&Find"), this);
     connect(findButton, &QAbstractButton::clicked, this, &Window::find);

     fileComboBox = createComboBox(tr("*"));
     connect(fileComboBox->lineEdit(), &QLineEdit::returnPressed,
             this, &Window::animateFindClick);
     textComboBox = createComboBox();
     connect(textComboBox->lineEdit(), &QLineEdit::returnPressed,
             this, &Window::animateFindClick);
     directoryComboBox = createComboBox(QDir::toNativeSeparators(QDir::currentPath()));
     connect(directoryComboBox->lineEdit(), &QLineEdit::returnPressed,
             this, &Window::animateFindClick);

     filesFoundLabel = new QLabel;

     createFilesTable();

     QGridLayout *mainLayout = new QGridLayout(this);
     mainLayout->addWidget(new QLabel(tr("Named:")), 0, 0);
     mainLayout->addWidget(fileComboBox, 0, 1, 1, 2);
     mainLayout->addWidget(new QLabel(tr("Containing text:")), 1, 0);
     mainLayout->addWidget(textComboBox, 1, 1, 1, 2);
     mainLayout->addWidget(new QLabel(tr("In directory:")), 2, 0);
     mainLayout->addWidget(directoryComboBox, 2, 1);
     mainLayout->addWidget(browseButton, 2, 2);
     mainLayout->addWidget(filesTable, 3, 0, 1, 3);
     mainLayout->addWidget(filesFoundLabel, 4, 0, 1, 2);
     mainLayout->addWidget(findButton, 4, 2);
 //! [0]

 //! [1]
     connect(new QShortcut(QKeySequence::Quit, this), &QShortcut::activated,
         qApp, &QApplication::quit);
 //! [1]
 }

 //! [2]
 void Window::browse()
 {
     QString directory =
         QDir::toNativeSeparators(QFileDialog::getExistingDirectory(this, tr("Find Files"), QDir::currentPath()));

     if (!directory.isEmpty()) {
         if (directoryComboBox->findText(directory) == -1)
             directoryComboBox->addItem(directory);
         directoryComboBox->setCurrentIndex(directoryComboBox->findText(directory));
     }
 }
 //! [2]

 static void updateComboBox(QComboBox *comboBox)
 {
     if (comboBox->findText(comboBox->currentText()) == -1)
         comboBox->addItem(comboBox->currentText());
 }

 //! [3]
 void Window::find()
 {
     filesTable->setRowCount(0);

     QString fileName = fileComboBox->currentText();
     QString text = textComboBox->currentText();
     QString path = QDir::cleanPath(directoryComboBox->currentText());
     currentDir = QDir(path);
 //! [3]

     updateComboBox(fileComboBox);
     updateComboBox(textComboBox);
     updateComboBox(directoryComboBox);

 //! [4]
     QStringList filter;
     if (!fileName.isEmpty())
         filter << fileName;
     QDirIterator it(path, filter, QDir::AllEntries | QDir::NoSymLinks | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);
     QStringList files;
     while (it.hasNext())
         files << it.next();
     if (!text.isEmpty())
         files = findFiles(files, text);
     files.sort();
     showFiles(files);
 }
 //! [4]

 void Window::animateFindClick()
 {
     findButton->animateClick();
 }

 //! [5]
 QStringList Window::findFiles(const QStringList &files, const QString &text)
 {
     QProgressDialog progressDialog(this);
     progressDialog.setCancelButtonText(tr("&Cancel"));
     progressDialog.setRange(0, files.size());
     progressDialog.setWindowTitle(tr("Find Files"));

 //! [5] //! [6]
     QMimeDatabase mimeDatabase;
     QStringList foundFiles;

     for (int i = 0; i < files.size(); ++i) {
         progressDialog.setValue(i);
         progressDialog.setLabelText(tr("Searching file number %1 of %n...", nullptr, files.size()).arg(i));
         QCoreApplication::processEvents();
 //! [6]

         if (progressDialog.wasCanceled())
             break;

 //! [7]
         const QString fileName = files.at(i);
         const QMimeType mimeType = mimeDatabase.mimeTypeForFile(fileName);
         if (mimeType.isValid() && !mimeType.inherits(QStringLiteral("text/plain"))) {
             qWarning() << "Not searching binary file " << QDir::toNativeSeparators(fileName);
             continue;
         }
         QFile file(fileName);
         if (file.open(QIODevice::ReadOnly)) {
             QString line;
             QTextStream in(&file);
             while (!in.atEnd()) {
                 if (progressDialog.wasCanceled())
                     break;
                 line = in.readLine();
                 if (line.contains(text, Qt::CaseInsensitive)) {
                     foundFiles << files[i];
                     break;
                 }
             }
         }
     }
     return foundFiles;
 }
 //! [7]

 //! [8]
 void Window::showFiles(const QStringList &paths)
 {
     for (const QString &filePath : paths) {
         const QString toolTip = QDir::toNativeSeparators(filePath);
         const QString relativePath = QDir::toNativeSeparators(currentDir.relativeFilePath(filePath));
         const qint64 size = QFileInfo(filePath).size();
         QTableWidgetItem *fileNameItem = new QTableWidgetItem(relativePath);
         fileNameItem->setData(absoluteFileNameRole, QVariant(filePath));
         fileNameItem->setToolTip(toolTip);
         fileNameItem->setFlags(fileNameItem->flags() ^ Qt::ItemIsEditable);
         QTableWidgetItem *sizeItem = new QTableWidgetItem(QLocale().formattedDataSize(size));
         sizeItem->setData(absoluteFileNameRole, QVariant(filePath));
         sizeItem->setToolTip(toolTip);
         sizeItem->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
         sizeItem->setFlags(sizeItem->flags() ^ Qt::ItemIsEditable);

         int row = filesTable->rowCount();
         filesTable->insertRow(row);
         filesTable->setItem(row, 0, fileNameItem);
         filesTable->setItem(row, 1, sizeItem);
     }
     filesFoundLabel->setText(tr("%n file(s) found (Double click on a file to open it)", nullptr, paths.size()));
     filesFoundLabel->setWordWrap(true);
 }
 //! [8]

 //! [10]
 QComboBox *Window::createComboBox(const QString &text)
 {
     QComboBox *comboBox = new QComboBox;
     comboBox->setEditable(true);
     comboBox->addItem(text);
     comboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
     return comboBox;
 }
 //! [10]

 //! [11]
 void Window::createFilesTable()
 {
     filesTable = new QTableWidget(0, 2);
     filesTable->setSelectionBehavior(QAbstractItemView::SelectRows);

     QStringList labels;
     labels << tr("Filename") << tr("Size");
     filesTable->setHorizontalHeaderLabels(labels);
     filesTable->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Stretch);
     filesTable->verticalHeader()->hide();
     filesTable->setShowGrid(false);
 //! [15]
     filesTable->setContextMenuPolicy(Qt::CustomContextMenu);
     connect(filesTable, &QTableWidget::customContextMenuRequested,
             this, &Window::contextMenu);
     connect(filesTable, &QTableWidget::cellActivated,
             this, &Window::openFileOfItem);
 //! [15]
 }
 //! [11]


 //! [12]

 void Window::openFileOfItem(int row, int /* column */)
 {
     const QTableWidgetItem *item = filesTable->item(row, 0);
     openFile(fileNameOfItem(item));
 }

 //! [12]

 //! [16]
 void Window::contextMenu(const QPoint &pos)
 {
     const QTableWidgetItem *item = filesTable->itemAt(pos);
     if (!item)
         return;
     QMenu menu;
 #ifndef QT_NO_CLIPBOARD
     QAction *copyAction = menu.addAction("Copy Name");
 #endif
     QAction *openAction = menu.addAction("Open");
     QAction *action = menu.exec(filesTable->mapToGlobal(pos));
     if (!action)
         return;
     const QString fileName = fileNameOfItem(item);
     if (action == openAction)
         openFile(fileName);
 #ifndef QT_NO_CLIPBOARD
     else if (action == copyAction)
         QGuiApplication::clipboard()->setText(QDir::toNativeSeparators(fileName));
 #endif
 }
 //! [16]
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://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."
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include <QtWidgets>

	#include "window.h"

	//! [17]
	enum { absoluteFileNameRole = Qt::UserRole + 1 };
	//! [17]

	//! [18]
	static inline QString fileNameOfItem(const QTableWidgetItem *item)
	{
	return item->data(absoluteFileNameRole).toString();
	}
	//! [18]

	//! [14]
	static inline void openFile(const QString &fileName)
	{
	QDesktopServices::openUrl(QUrl::fromLocalFile(fileName));
	}
	//! [14]

	//! [0]
	Window::Window(QWidget *parent)
	: QWidget(parent)
	{
	setWindowTitle(tr("Find Files"));
	QPushButton *browseButton = new QPushButton(tr("&Browse..."), this);
	connect(browseButton, &QAbstractButton::clicked, this, &Window::browse);
	findButton = new QPushButton(tr("&Find"), this);
	connect(findButton, &QAbstractButton::clicked, this, &Window::find);

	fileComboBox = createComboBox(tr("*"));
	connect(fileComboBox->lineEdit(), &QLineEdit::returnPressed,
	this, &Window::animateFindClick);
	textComboBox = createComboBox();
	connect(textComboBox->lineEdit(), &QLineEdit::returnPressed,
	this, &Window::animateFindClick);
	directoryComboBox = createComboBox(QDir::toNativeSeparators(QDir::currentPath()));
	connect(directoryComboBox->lineEdit(), &QLineEdit::returnPressed,
	this, &Window::animateFindClick);

	filesFoundLabel = new QLabel;

	createFilesTable();

	QGridLayout *mainLayout = new QGridLayout(this);
	mainLayout->addWidget(new QLabel(tr("Named:")), 0, 0);
	mainLayout->addWidget(fileComboBox, 0, 1, 1, 2);
	mainLayout->addWidget(new QLabel(tr("Containing text:")), 1, 0);
	mainLayout->addWidget(textComboBox, 1, 1, 1, 2);
	mainLayout->addWidget(new QLabel(tr("In directory:")), 2, 0);
	mainLayout->addWidget(directoryComboBox, 2, 1);
	mainLayout->addWidget(browseButton, 2, 2);
	mainLayout->addWidget(filesTable, 3, 0, 1, 3);
	mainLayout->addWidget(filesFoundLabel, 4, 0, 1, 2);
	mainLayout->addWidget(findButton, 4, 2);
	//! [0]

	//! [1]
	connect(new QShortcut(QKeySequence::Quit, this), &QShortcut::activated,
	qApp, &QApplication::quit);
	//! [1]
	}

	//! [2]
	void Window::browse()
	{
	QString directory =
	QDir::toNativeSeparators(QFileDialog::getExistingDirectory(this, tr("Find Files"), QDir::currentPath()));

	if (!directory.isEmpty()) {
	if (directoryComboBox->findText(directory) == -1)
	directoryComboBox->addItem(directory);
	directoryComboBox->setCurrentIndex(directoryComboBox->findText(directory));
	}
	}
	//! [2]

	static void updateComboBox(QComboBox *comboBox)
	{
	if (comboBox->findText(comboBox->currentText()) == -1)
	comboBox->addItem(comboBox->currentText());
	}

	//! [3]
	void Window::find()
	{
	filesTable->setRowCount(0);

	QString fileName = fileComboBox->currentText();
	QString text = textComboBox->currentText();
	QString path = QDir::cleanPath(directoryComboBox->currentText());
	currentDir = QDir(path);
	//! [3]

	updateComboBox(fileComboBox);
	updateComboBox(textComboBox);
	updateComboBox(directoryComboBox);

	//! [4]
	QStringList filter;
	if (!fileName.isEmpty())
	filter << fileName;
	QDirIterator it(path, filter, QDir::AllEntries \| QDir::NoSymLinks \| QDir::NoDotAndDotDot, QDirIterator::Subdirectories);
	QStringList files;
	while (it.hasNext())
	files << it.next();
	if (!text.isEmpty())
	files = findFiles(files, text);
	files.sort();
	showFiles(files);
	}
	//! [4]

	void Window::animateFindClick()
	{
	findButton->animateClick();
	}

	//! [5]
	QStringList Window::findFiles(const QStringList &files, const QString &text)
	{
	QProgressDialog progressDialog(this);
	progressDialog.setCancelButtonText(tr("&Cancel"));
	progressDialog.setRange(0, files.size());
	progressDialog.setWindowTitle(tr("Find Files"));

	//! [5] //! [6]
	QMimeDatabase mimeDatabase;
	QStringList foundFiles;

	for (int i = 0; i < files.size(); ++i) {
	progressDialog.setValue(i);
	progressDialog.setLabelText(tr("Searching file number %1 of %n...", nullptr, files.size()).arg(i));
	QCoreApplication::processEvents();
	//! [6]

	if (progressDialog.wasCanceled())
	break;

	//! [7]
	const QString fileName = files.at(i);
	const QMimeType mimeType = mimeDatabase.mimeTypeForFile(fileName);
	if (mimeType.isValid() && !mimeType.inherits(QStringLiteral("text/plain"))) {
	qWarning() << "Not searching binary file " << QDir::toNativeSeparators(fileName);
	continue;
	}
	QFile file(fileName);
	if (file.open(QIODevice::ReadOnly)) {
	QString line;
	QTextStream in(&file);
	while (!in.atEnd()) {
	if (progressDialog.wasCanceled())
	break;
	line = in.readLine();
	if (line.contains(text, Qt::CaseInsensitive)) {
	foundFiles << files[i];
	break;
	}
	}
	}
	}
	return foundFiles;
	}
	//! [7]

	//! [8]
	void Window::showFiles(const QStringList &paths)
	{
	for (const QString &filePath : paths) {
	const QString toolTip = QDir::toNativeSeparators(filePath);
	const QString relativePath = QDir::toNativeSeparators(currentDir.relativeFilePath(filePath));
	const qint64 size = QFileInfo(filePath).size();
	QTableWidgetItem *fileNameItem = new QTableWidgetItem(relativePath);
	fileNameItem->setData(absoluteFileNameRole, QVariant(filePath));
	fileNameItem->setToolTip(toolTip);
	fileNameItem->setFlags(fileNameItem->flags() ^ Qt::ItemIsEditable);
	QTableWidgetItem *sizeItem = new QTableWidgetItem(QLocale().formattedDataSize(size));
	sizeItem->setData(absoluteFileNameRole, QVariant(filePath));
	sizeItem->setToolTip(toolTip);
	sizeItem->setTextAlignment(Qt::AlignRight \| Qt::AlignVCenter);
	sizeItem->setFlags(sizeItem->flags() ^ Qt::ItemIsEditable);

	int row = filesTable->rowCount();
	filesTable->insertRow(row);
	filesTable->setItem(row, 0, fileNameItem);
	filesTable->setItem(row, 1, sizeItem);
	}
	filesFoundLabel->setText(tr("%n file(s) found (Double click on a file to open it)", nullptr, paths.size()));
	filesFoundLabel->setWordWrap(true);
	}
	//! [8]

	//! [10]
	QComboBox *Window::createComboBox(const QString &text)
	{
	QComboBox *comboBox = new QComboBox;
	comboBox->setEditable(true);
	comboBox->addItem(text);
	comboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
	return comboBox;
	}
	//! [10]

	//! [11]
	void Window::createFilesTable()
	{
	filesTable = new QTableWidget(0, 2);
	filesTable->setSelectionBehavior(QAbstractItemView::SelectRows);

	QStringList labels;
	labels << tr("Filename") << tr("Size");
	filesTable->setHorizontalHeaderLabels(labels);
	filesTable->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Stretch);
	filesTable->verticalHeader()->hide();
	filesTable->setShowGrid(false);
	//! [15]
	filesTable->setContextMenuPolicy(Qt::CustomContextMenu);
	connect(filesTable, &QTableWidget::customContextMenuRequested,
	this, &Window::contextMenu);
	connect(filesTable, &QTableWidget::cellActivated,
	this, &Window::openFileOfItem);
	//! [15]
	}
	//! [11]


	//! [12]

	void Window::openFileOfItem(int row, int /* column */)
	{
	const QTableWidgetItem *item = filesTable->item(row, 0);
	openFile(fileNameOfItem(item));
	}

	//! [12]

	//! [16]
	void Window::contextMenu(const QPoint &pos)
	{
	const QTableWidgetItem *item = filesTable->itemAt(pos);
	if (!item)
	return;
	QMenu menu;
	#ifndef QT_NO_CLIPBOARD
	QAction *copyAction = menu.addAction("Copy Name");
	#endif
	QAction *openAction = menu.addAction("Open");
	QAction *action = menu.exec(filesTable->mapToGlobal(pos));
	if (!action)
	return;
	const QString fileName = fileNameOfItem(item);
	if (action == openAction)
	openFile(fileName);
	#ifndef QT_NO_CLIPBOARD
	else if (action == copyAction)
	QGuiApplication::clipboard()->setText(QDir::toNativeSeparators(fileName));
	#endif
	}
	//! [16]