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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include <QApplication> |
| #include <QQmlApplicationEngine> |
| #include <QtQml> |
| #include <QFileSystemModel> |
| #include <QDateTime> |
| #include <QDesktopServices> |
| #include <QUrl> |
| |
| static inline QString permissionString(const QFileInfo &fi) |
| { |
| const QFile::Permissions permissions = fi.permissions(); |
| QString result = QLatin1String("----------"); |
| if (fi.isSymLink()) |
| result[0] = QLatin1Char('l'); |
| else if (fi.isDir()) |
| result[0] = QLatin1Char('d'); |
| if (permissions & QFileDevice::ReadUser) |
| result[1] = QLatin1Char('r'); |
| if (permissions & QFileDevice::WriteUser) |
| result[2] = QLatin1Char('w'); |
| if (permissions & QFileDevice::ExeUser) |
| result[3] = QLatin1Char('x'); |
| if (permissions & QFileDevice::ReadGroup) |
| result[4] = QLatin1Char('r'); |
| if (permissions & QFileDevice::WriteGroup) |
| result[5] = QLatin1Char('w'); |
| if (permissions & QFileDevice::ExeGroup) |
| result[6] = QLatin1Char('x'); |
| if (permissions & QFileDevice::ReadOther) |
| result[7] = QLatin1Char('r'); |
| if (permissions & QFileDevice::WriteOther) |
| result[8] = QLatin1Char('w'); |
| if (permissions & QFileDevice::ExeOther) |
| result[9] = QLatin1Char('x'); |
| return result; |
| } |
| |
| static inline QString sizeString(const QFileInfo &fi) |
| { |
| if (!fi.isFile()) |
| return QString(); |
| const qint64 size = fi.size(); |
| if (size > 1024 * 1024 * 10) |
| return QString::number(size / (1024 * 1024)) + QLatin1Char('M'); |
| if (size > 1024 * 10) |
| return QString::number(size / 1024) + QLatin1Char('K'); |
| return QString::number(size); |
| } |
| |
| class DisplayFileSystemModel : public QFileSystemModel { |
| Q_OBJECT |
| public: |
| explicit DisplayFileSystemModel(QObject *parent = nullptr) |
| : QFileSystemModel(parent) {} |
| |
| enum Roles { |
| SizeRole = Qt::UserRole + 4, |
| DisplayableFilePermissionsRole = Qt::UserRole + 5, |
| LastModifiedRole = Qt::UserRole + 6, |
| UrlStringRole = Qt::UserRole + 7 |
| }; |
| Q_ENUM(Roles) |
| |
| QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override |
| { |
| if (index.isValid() && role >= SizeRole) { |
| switch (role) { |
| case SizeRole: |
| return QVariant(sizeString(fileInfo(index))); |
| case DisplayableFilePermissionsRole: |
| return QVariant(permissionString(fileInfo(index))); |
| case LastModifiedRole: |
| return QVariant(fileInfo(index).lastModified().toString(Qt::SystemLocaleShortDate)); |
| case UrlStringRole: |
| return QVariant(QUrl::fromLocalFile(filePath(index)).toString()); |
| default: |
| break; |
| } |
| } |
| return QFileSystemModel::data(index, role); |
| } |
| |
| QHash<int,QByteArray> roleNames() const override |
| { |
| QHash<int, QByteArray> result = QFileSystemModel::roleNames(); |
| result.insert(SizeRole, QByteArrayLiteral("size")); |
| result.insert(DisplayableFilePermissionsRole, QByteArrayLiteral("displayableFilePermissions")); |
| result.insert(LastModifiedRole, QByteArrayLiteral("lastModified")); |
| return result; |
| } |
| }; |
| |
| int main(int argc, char *argv[]) |
| { |
| QApplication app(argc, argv); |
| |
| QQmlApplicationEngine engine; |
| qmlRegisterUncreatableType<DisplayFileSystemModel>("io.qt.examples.quick.controls.filesystembrowser", 1, 0, |
| "FileSystemModel", "Cannot create a FileSystemModel instance."); |
| QFileSystemModel *fsm = new DisplayFileSystemModel(&engine); |
| fsm->setRootPath(QDir::homePath()); |
| fsm->setResolveSymlinks(true); |
| engine.rootContext()->setContextProperty("fileSystemModel", fsm); |
| engine.rootContext()->setContextProperty("rootPathIndex", fsm->index(fsm->rootPath())); |
| engine.load(QUrl(QStringLiteral("qrc:///main.qml"))); |
| if (engine.rootObjects().isEmpty()) |
| return -1; |
| |
| return app.exec(); |
| } |
| |
| #include "main.moc" |