////  OffscreenUi.cpp//  interface/src/render-utils////  Created by Bradley Austin Davis on 2015-04-04//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html//#include "FileDialogHelper.h"#include "ui/Logging.h" #include <QtCore/QDir>#include <QtCore/QFile>#include <QtCore/QDebug>#include <QtCore/QRegularExpression>#include <QDesktopServices> std::function<void(const QString&)> FileDialogHelper::_openDirectoryOperator = nullptr; QUrl FileDialogHelper::home() {    return pathToUrl(QStandardPaths::standardLocations(QStandardPaths::HomeLocation)[0]);} QStringList FileDialogHelper::standardPath(StandardLocation location) {    return QStandardPaths::standardLocations(static_cast<QStandardPaths::StandardLocation>(location)); } QString FileDialogHelper::writableLocation(StandardLocation location) {    return QStandardPaths::writableLocation(static_cast<QStandardPaths::StandardLocation>(location));} QString FileDialogHelper::urlToPath(const QUrl& url) {     return url.toLocalFile(); } bool FileDialogHelper::fileExists(const QString& path) {    return QFile(path).exists();} bool FileDialogHelper::validPath(const QString& path) {    return QFile(path).exists(); } bool FileDialogHelper::validFolder(const QString& path) {     return QDir(path).exists(); } QUrl FileDialogHelper::pathToUrl(const QString& path) {     return QUrl::fromLocalFile(path); }  QUrl FileDialogHelper::saveHelper(const QString& saveText, const QUrl& currentFolder, const QStringList& selectionFilters) {    qDebug(uiLogging) << "Calling save helper with " << saveText << " " << currentFolder << " " << selectionFilters;     QFileInfo fileInfo(saveText);     // Check if it's a relative path and if it is resolve to the absolute path    {        if (fileInfo.isRelative()) {            fileInfo = QFileInfo(currentFolder.toLocalFile() + "/" + fileInfo.filePath());        }    }     // Check if we need to append an extension, but only if the current resolved path isn't a directory    if (!fileInfo.isDir()) {        QString fileName = fileInfo.fileName();        if (!fileName.contains(".") && selectionFilters.size() == 1) {            const QRegularExpression extensionRe{ ".*(\\.[a-zA-Z0-9]+)$" };            QString filter = selectionFilters[0];            auto match = extensionRe.match(filter);            if (match.hasMatch()) {                fileInfo = QFileInfo(fileInfo.filePath() + match.captured(1));            }        }    }     return QUrl::fromLocalFile(fileInfo.absoluteFilePath());} bool FileDialogHelper::urlIsDir(const QUrl& url) {    return QFileInfo(url.toLocalFile()).isDir();} bool FileDialogHelper::urlIsFile(const QUrl& url) {    return QFileInfo(url.toLocalFile()).isFile();} bool FileDialogHelper::urlExists(const QUrl& url) {    return QFileInfo(url.toLocalFile()).exists();} bool FileDialogHelper::urlIsWritable(const QUrl& url) {    QFileInfo fileInfo(url.toLocalFile());    // Is the file writable?    if (fileInfo.exists()) {        return fileInfo.isWritable();    }      // No file, get the parent directory and check if writable    return QFileInfo(fileInfo.absoluteDir().absolutePath()).isWritable();} QStringList FileDialogHelper::drives() {    QStringList result;    for (const auto& drive : QDir::drives()) {        result << drive.absolutePath();    }    return result;} void FileDialogHelper::openDirectory(const QString& path) {    if (_openDirectoryOperator) {        _openDirectoryOperator(path);    }} QList<QUrl> FileDialogHelper::urlToList(const QUrl& url) {    QList<QUrl> results;    results.push_back(url);    return results;} void FileDialogHelper::monitorDirectory(const QString& path) {    if (!_fsWatcherPath.isEmpty()) {        _fsWatcher.removePath(_fsWatcherPath);        _fsWatcherPath = "";    }     if (!path.isEmpty()) {        _fsWatcher.addPath(path);        _fsWatcherPath = path;        connect(&_fsWatcher, &QFileSystemWatcher::directoryChanged, this, &FileDialogHelper::contentsChanged);    }}