C++ QTreeView::setDragDropMode方法代码示例

void MainWindow::buildFileBrowser()
{
    QString rootPath = qgetenv("HOME");
    this->drivesModel->setFilter(QDir::NoDotAndDotDot | QDir::Dirs);

    QTreeView *treeView = this->treeView = new QTreeView(this->ui->dockDir);
    treeView->setModel(this->drivesModel);
    treeView->setRootIndex(this->drivesModel->setRootPath(rootPath + "/../"));
    treeView->hideColumn(1);
    treeView->hideColumn(2);
    treeView->hideColumn(3);
    treeView->setEditTriggers(QAbstractItemView::NoEditTriggers);
    treeView->setDragEnabled(true);
    treeView->setDragDropMode(QAbstractItemView::DragOnly);
    this->ui->dockDir->setWidget(treeView);

    this->filesModel->setFilter(QDir::NoDotAndDotDot | QDir::Files);
    QListView *listView = this->listView = new QListView(this->ui->dockFile);
    listView->setModel(this->filesModel);
    listView->setRootIndex(this->filesModel->setRootPath(rootPath));
    listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
    listView->setDragEnabled(true);
    listView->setSelectionMode(QAbstractItemView::ExtendedSelection);
    this->ui->dockFile->setWidget(listView);

    listView->show();
    treeView->show();
}

QObject* FileSystemTab::component(Jerboa::Plugin::ComponentType type, QObject* parent)
{
	switch(type)
	{
		case Jerboa::Plugin::WidgetUsedWithPlaylist:
			{
				QFileSystemModel* model = new FileSystemModelWithToolTip(parent);
				model->setRootPath("/");
				model->setFilter(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs);
				model->setNameFilterDisables(false);

				QStringList musicGlobs;
				musicGlobs
					<< "*.aac"
					<< "*.aiff"
					<< "*.ape"
					<< "*.au"
					<< "*.cdda"
					<< "*.flac"
					<< "*.m4a"
					<< "*.mp3"
					<< "*.oga"
					<< "*.ogg"
					<< "*.ogm"
					<< "*.wav"
					<< "*.wma"
				;
				model->setNameFilters(musicGlobs);

				QTreeView* view = new QTreeView(qobject_cast<QWidget*>(parent));
				view->setWindowTitle("Files");
				view->setModel(model);
				view->setHeaderHidden(true);
				for(int i = 1; i < model->columnCount(); ++i)
				{
					view->setColumnHidden(i, true);
				}

				QString path = QDesktopServices::storageLocation(QDesktopServices::MusicLocation);

				if(path.isEmpty() || !QDir(path).exists())
				{
					path = QDesktopServices::storageLocation(QDesktopServices::HomeLocation);
				}

				const QModelIndex index(model->index(QSettings().value("collection/directory", path).toString()));
				for(QModelIndex iterator(index); iterator.isValid(); iterator = iterator.parent())
				{
					view->setExpanded(iterator, true);
				}

				view->setDragDropMode(QAbstractItemView::DragOnly);
				view->selectionModel()->select(index, QItemSelectionModel::ClearAndSelect);
				view->setSelectionMode(QAbstractItemView::ExtendedSelection);

				connect(
					view,
					SIGNAL(doubleClicked(QModelIndex)),
					this,
					SLOT(addPathToPlaylist(QModelIndex))
				);

				QTimer* timer = new QTimer(this);
				connect(
					timer,
					SIGNAL(timeout()),
					this,
					SLOT(scrollToSelection())
				);
				timer->setSingleShot(true);
				timer->start(1000);

				m_view = view;
				return view;
			}
		default:
			return Jerboa::Plugin::component(type, parent);
	}
}