/examples/widgets/dialogs/findfiles/window.cpp
C++ | 311 lines | 195 code | 34 blank | 82 comment | 24 complexity | 7c6b119b072167ace497556d74593fb1 MD5 | raw file
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- ** Copyright (C) 2016 The Qt Company Ltd.
- ** Contact: https://www.qt.io/licensing/
- **
- ** This file is part of the examples of the Qt Toolkit.
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- ****************************************************************************/
- #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]