findfiledialog.cpp

Enable keyboard shortcuts

// 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);