findfiledialog.cpp

++ // Copyright (C) 2017 The Qt Company Ltd.

++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

++

++ #include "assistant.h"

++ #include "findfiledialog.h"

++ #include "textedit.h"

++

++ #include <QComboBox>

++ #include <QDialogButtonBox>

++ #include <QDir>

++ #include <QFileDialog>

++ #include <QHBoxLayout>

++ #include <QLabel>

++ #include <QPushButton>

++ #include <QRegularExpression>

++ #include <QToolButton>

++ #include <QTreeWidget>

++ #include <QTreeWidgetItem>

++

++ //! [0]

++ FindFileDialog::FindFileDialog(TextEdit *editor, Assistant *assistant)

++     : QDialog(editor)

++     , currentEditor(editor)

++     , currentAssistant(assistant)

++ {

++ //! [0]

++

++     createButtons();

++     createComboBoxes();

++     createFilesTree();

++     createLabels();

++     createLayout();

++

++     directoryComboBox->addItem(QDir::toNativeSeparators(QDir::currentPath()));

++     fileNameComboBox->addItem("*");

++     findFiles();

++

++     setWindowTitle(tr("Find File"));

++ //! [1]

++ }

++ //! [1]

++

++ void FindFileDialog::browse()

++ {

++     const QString currentDirectory = directoryComboBox->currentText();

++     const QString newDirectory = QFileDialog::getExistingDirectory(this,

++                                tr("Select Directory"), currentDirectory);

++     if (!newDirectory.isEmpty()) {

++         directoryComboBox->addItem(QDir::toNativeSeparators(newDirectory));

++         directoryComboBox->setCurrentIndex(directoryComboBox->count() - 1);

++         update();

++     }

++ }

++

++ //! [2]

++ void FindFileDialog::help()

++ {

++     currentAssistant->showDocumentation("filedialog.html");

++ }

++ //! [2]

++

++ void FindFileDialog::openFile()

++ {

++     QTreeWidgetItem *item = foundFilesTree->currentItem();

++     if (!item)

++         return;

++

++     const QString fileName = item->text(0);

++     const QString path = QDir(directoryComboBox->currentText()).filePath(fileName);

++

++     currentEditor->setContents(path);

++     close();

++ }

++

++ void FindFileDialog::update()

++ {

++     findFiles();

++     buttonBox->button(QDialogButtonBox::Open)->setEnabled(foundFilesTree->topLevelItemCount() > 0);

++ }

++

++ void FindFileDialog::findFiles()

++ {

++     QString wildCard = fileNameComboBox->currentText();

++     if (!wildCard.endsWith('*'))

++         wildCard += '*';

++     const QRegularExpression filePattern(QRegularExpression::wildcardToRegularExpression(wildCard));

++

++     const QDir directory(directoryComboBox->currentText());

++

++     const QStringList allFiles = directory.entryList(QDir::Files | QDir::NoSymLinks);

++     QStringList matchingFiles;

++

++     for (const QString &file : allFiles) {

++         if (filePattern.match(file).hasMatch())

++             matchingFiles << file;

++     }

++     showFiles(matchingFiles);

++ }

++

++ void FindFileDialog::showFiles(const QStringList &files)

++ {

++     foundFilesTree->clear();

++

++     for (const QString &file : files)

++         new QTreeWidgetItem(foundFilesTree, {file});

++

++     if (files.count() > 0)

++         foundFilesTree->setCurrentItem(foundFilesTree->topLevelItem(0));

++ }

++

++ void FindFileDialog::createButtons()

++ {

++     browseButton = new QToolButton;

++     browseButton->setText(tr("..."));

++     connect(browseButton, &QAbstractButton::clicked, this, &FindFileDialog::browse);

++

++     buttonBox = new QDialogButtonBox(QDialogButtonBox::Open

++                                      | QDialogButtonBox::Cancel

++                                      | QDialogButtonBox::Help);

++     connect(buttonBox, &QDialogButtonBox::accepted, this, &FindFileDialog::openFile);

++     connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);

++     connect(buttonBox, &QDialogButtonBox::helpRequested, this, &FindFileDialog::help);

++ }

++

++ void FindFileDialog::createComboBoxes()

++ {

++     directoryComboBox = new QComboBox;

++     fileNameComboBox = new QComboBox;

++

++     fileNameComboBox->setEditable(true);

++     fileNameComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);

++

++     directoryComboBox->setMinimumContentsLength(30);

++     directoryComboBox->setSizeAdjustPolicy(QComboBox::AdjustToContents);

++     directoryComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);

++

++     connect(fileNameComboBox, &QComboBox::editTextChanged, this, &FindFileDialog::update);

++     connect(directoryComboBox, &QComboBox::currentTextChanged, this, &FindFileDialog::update);

++ }

++

++ void FindFileDialog::createFilesTree()

++ {

++     foundFilesTree = new QTreeWidget;

++     foundFilesTree->setColumnCount(1);

++     foundFilesTree->setHeaderLabels(QStringList(tr("Matching Files")));

++     foundFilesTree->setRootIsDecorated(false);

++     foundFilesTree->setSelectionMode(QAbstractItemView::SingleSelection);

++

++     connect(foundFilesTree, &QTreeWidget::itemActivated, this, &FindFileDialog::openFile);

++ }

++

++ void FindFileDialog::createLabels()

++ {

++     directoryLabel = new QLabel(tr("Search in:"));

++     fileNameLabel = new QLabel(tr("File name (including wildcards):"));

++ }

++

++ void FindFileDialog::createLayout()

++ {

++     QHBoxLayout *fileLayout = new QHBoxLayout;

++     fileLayout->addWidget(fileNameLabel);

++     fileLayout->addWidget(fileNameComboBox);

++

++     QHBoxLayout *directoryLayout = new QHBoxLayout;

++     directoryLayout->addWidget(directoryLabel);

++     directoryLayout->addWidget(directoryComboBox);

++     directoryLayout->addWidget(browseButton);

++

++     QVBoxLayout *mainLayout = new QVBoxLayout;

++     mainLayout->addLayout(fileLayout);

++     mainLayout->addLayout(directoryLayout);

++     mainLayout->addWidget(foundFilesTree);

++     mainLayout->addStretch();

++     mainLayout->addWidget(buttonBox);

++     setLayout(mainLayout);

++ }

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