C++ (Cpp) QTreeView::expand Examples

Example #1

File: mainwindow.cpp Project: victorkifer/VKAudioPlayer

void MainWindow::loadPlaylists()
{
    QTreeView *playlists = (QTreeView*)ui->tvPlaylists;

    QStandardItemModel *model = new QStandardItemModel(3,1);
    QStandardItem *item = new QStandardItem(QString(tr("Search")));
    item->setData(DATA_SEARCH, DATA_KEY_PLAYLIST);
    item->setEditable(false);
    model->setItem(0, 0, item);
    item = new QStandardItem(QString(tr("History")));
    item->setData(DATA_HISTORY, DATA_KEY_PLAYLIST);
    item->setEditable(false);
    model->setItem(1, 0, item);
    item = new QStandardItem(QString(tr("Playlists")));
    item->setData(DATA_EMPTY, DATA_KEY_PLAYLIST);
    item->setEditable(false);
    QList<Playlist> pls = dp->getPlaylists();
    int n = pls.count();
    for( int i=0; i<n; i++ )
    {
      QStandardItem *child = new QStandardItem(pls[i].title);
      child->setData(pls[i].id, DATA_KEY_PLAYLIST);
      child->setEditable(false);
      item->appendRow(child);
    }
    model->setItem(2, 0, item);
    model->setHorizontalHeaderItem( 0, new QStandardItem(tr("Library")));
    model->horizontalHeaderItem(0)->setEditable(false);
    model->horizontalHeaderItem(0)->setEnabled(false);

    playlists->setModel(model);
    playlists->setContextMenuPolicy(Qt::CustomContextMenu);

    QModelIndexList indexes = model->match(model->index(2,0), Qt::DisplayRole, "*", -1, Qt::MatchWildcard|Qt::MatchRecursive);
    playlists->expand(indexes[0]);

    connect(playlists->selectionModel(), SIGNAL(selectionChanged(const QItemSelection &, const QItemSelection &)), this, SLOT(loadPlaylist()));
}