C++ removeRow函数代码示例

void Table::keyPressEvent(QKeyEvent *event)
{
    // Delete's all the selected rows for use with polygons only
    if (event->key() == Qt::Key_Delete && mType == PolyEdit::Polygon)
    {
        QList<QTableWidgetItem *> selected = selectedItems();

        int lastRow = -1;

        for(auto i : selected)
        {
            int r = i->row();

            if(lastRow == -1)
            {
                lastRow = r;
                removeRow(r);
            }
            else if(lastRow != r)
                removeRow(r);
        }

        // Ensure we have atleast one row
        if (rowCount() == 0)
            insertRow(rowCount());
    }
}

void MessageListModel::append(QString message, MessageStatus messageStatus, bool newLine) {
  QStandardItem* item = new QStandardItem;

  switch(messageStatus) {
  case MessageStatus::Information:
    item->setData(message, MessageItemDelegate::InformationRole);
    break;
  case MessageStatus::Success:
    item->setData(message, MessageItemDelegate::SuccessRole);
    break;
  case MessageStatus::Warning:
    item->setData(message, MessageItemDelegate::WarningRole);
    break;
  case MessageStatus::Error:
    item->setData(message, MessageItemDelegate::ErrorRole);
    break;
  case MessageStatus::Download:
    item->setData(message, MessageItemDelegate::DownloadRole);
    break;
  default:
    item->setData(message, MessageItemDelegate::DownloadRole);
    break;
  }

  while (rowCount() > _maxLines)
    removeRow(0);

  if (!newLine)
    removeRow(rowCount()-1);

  appendRow(item);

  emit scrollToBottomRequested();
}

MetaEditor::MetaEditor(QWidget *parent)
  : QDialog(parent),
    m_mainWindow(qobject_cast<MainWindow *>(parent)),
    m_Relator(MarcRelators::instance()),
    m_RemoveRow(new QShortcut(QKeySequence(Qt::ControlModifier + Qt::Key_Delete),this, 0, 0, Qt::WidgetWithChildrenShortcut))
{
    setupUi(this);

    m_book = m_mainWindow->GetCurrentBook();
    m_version = m_book->GetConstOPF()->GetEpubVersion();
    m_opfdata = m_book->GetOPF()->GetText();

    QStringList headers;
    headers << tr("Name") << tr("Value");

    QString data = GetOPFMetadata();

    TreeModel *model = new TreeModel(headers, data);
    view->setModel(model);
    for (int column = 0; column < model->columnCount(); ++column)
        view->resizeColumnToContents(column);

    if (!isVisible()) {
        ReadSettings();
    }

    if (m_version.startsWith('3')) { 
        loadMetadataElements();
        loadMetadataProperties();
    } else {
        loadE2MetadataElements();
        loadE2MetadataProperties();
    }

    connect(view->selectionModel(),
            SIGNAL(selectionChanged(const QItemSelection &,
                                    const QItemSelection &)),
            this, SLOT(updateActions()));

    connect(delButton, SIGNAL(clicked()), this, SLOT(removeRow()));
    connect(tbMoveUp, SIGNAL(clicked()), this, SLOT(moveRowUp()));
    connect(tbMoveDown, SIGNAL(clicked()), this, SLOT(moveRowDown()));
    connect(m_RemoveRow, SIGNAL(activated()), this, SLOT(removeRow()));

    if (m_version.startsWith('3')) {
        connect(addMetaButton, SIGNAL(clicked()), this, SLOT(selectElement()));
        connect(addPropButton, SIGNAL(clicked()), this, SLOT(selectProperty()));
    } else {
        connect(addMetaButton, SIGNAL(clicked()), this, SLOT(selectE2Element()));
        connect(addPropButton, SIGNAL(clicked()), this, SLOT(selectE2Property()));
    }

    connect(buttonBox, SIGNAL(accepted()), this, SLOT(saveData()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

    updateActions();
}

/**----------------------------------------------------------------
 * Create the output from a single ChebfunWorkspace.
 */
void ChebfunToTable::fromChebWorkspace()
{
  ChebfunWorkspace_sptr cws = getClass("InputWorkspace");

  Numeric::FunctionDomain1D_sptr domain;

  size_t n = (int)get("N");

  if (n < 2)
  {// if n has default value (0) use the x-points of the chebfuns
    domain = cws->fun().createDomainFromXPoints();
    n = domain->size();
  }
  else
  {// otherwise create a regular comb
    domain = cws->fun().createDomain( n );
  }

  Numeric::FunctionValues values( *domain );
  cws->fun().function(*domain, values);

  auto tws = API::TableWorkspace_ptr(dynamic_cast<API::TableWorkspace*>(
    API::WorkspaceFactory::instance().create("TableWorkspace"))
    );

  tws->addColumn("double","X");
  tws->addColumn("double","Y");
  tws->setRowCount(n);
  auto xColumn = static_cast<API::TableColumn<double>*>(tws->getColumn("X").get());
  xColumn->asNumeric()->setPlotRole(API::NumericColumn::X);
  auto& x = xColumn->data();
  auto yColumn = static_cast<API::TableColumn<double>*>(tws->getColumn("Y").get());
  yColumn->asNumeric()->setPlotRole(API::NumericColumn::Y);
  auto& y = yColumn->data();
  
  for(size_t i = 0; i < domain->size(); ++i)
  {
    x[i] = (*domain)[i];
    y[i] = values.getCalculated(i);
  }

  bool dropXInf = get("DropXInf");
  if ( dropXInf )
  {
    if ( fabs( x.front() ) == inf )
    {
      tws->removeRow( 0 );
    }
    if ( fabs( x.back() ) == inf )
    {
      tws->removeRow( tws->rowCount() - 1 );
    }
  }

  setProperty("OutputWorkspace",tws);
}

bool PersonsTableModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    Q_D(PersonsTableModel);
    if(!(index.row() < d->persons.size()))
        return false;
    if(index.column() == 0) {
        if(role == Qt::DisplayRole
                || role == Qt::EditRole) {
            if(value.toString().isEmpty()) {
                return removeRow(index.row());
            }

            d->persons[index.row()].setName(value.toString());
            emit dataChanged(index, index);
            return true;
        }
    }
    else {
        if(role == Qt::CheckStateRole) {
            Qt::CheckState check = (Qt::CheckState)value.toInt();
            switch (check) {
            case Qt::Unchecked:
                d->persons[index.row()].removeDate(d->columns.at(index.column()-1));
                break;
            default:
                d->persons[index.row()].addDate(d->columns.at(index.column()-1));
                break;
            }
            emit dataChanged(index, index);
            return true;
        }
    }
    return false;
}

void pTableWidget::removeAll()
{
    clearContents();

    while(rowCount() > 0)
        removeRow(0);
}

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    setupUi(this);

    QStringList headers;
    headers << tr("Title") << tr("Description");

    QFile file(":/default.txt");
    file.open(QIODevice::ReadOnly);
    TreeModel *model = new TreeModel(headers, file.readAll());
    file.close();

    view->setModel(model);
    for (int column = 0; column < model->columnCount(); ++column)
        view->resizeColumnToContents(column);

    connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

    connect(view->selectionModel(),
            SIGNAL(selectionChanged(const QItemSelection &,
                                    const QItemSelection &)),
            this, SLOT(updateActions()));

    connect(actionsMenu, SIGNAL(aboutToShow()), this, SLOT(updateActions()));
    connect(insertRowAction, SIGNAL(triggered()), this, SLOT(insertRow()));
    connect(insertColumnAction, SIGNAL(triggered()), this, SLOT(insertColumn()));
    connect(removeRowAction, SIGNAL(triggered()), this, SLOT(removeRow()));
    connect(removeColumnAction, SIGNAL(triggered()), this, SLOT(removeColumn()));
    connect(insertChildAction, SIGNAL(triggered()), this, SLOT(insertChild()));

    updateActions();
}

void GameSettings::removeScriptTag(std::string const & key)
{
    std::string key2 = key;
    boost::to_lower(key2);

    removeRow(key2);
}

/*!
    Add urls \a list into the list at \a row.  If move then movie
    existing ones to row.

    \sa dropMimeData()
*/
void QUrlModel::addUrls(const QList<QUrl> &list, int row, bool move)
{
    if (row == -1)
        row = rowCount();
    row = qMin(row, rowCount());
    for (int i = list.count() - 1; i >= 0; --i) {
        QUrl url = list.at(i);
        if (!url.isValid() || url.scheme() != QLatin1String("file"))
            continue;
        //this makes sure the url is clean
        const QString cleanUrl = QDir::cleanPath(url.toLocalFile());
        url = QUrl::fromLocalFile(cleanUrl);

        for (int j = 0; move && j < rowCount(); ++j) {
            const QString local = index(j, 0).data(UrlRole).toUrl().toLocalFile();
            if (local == cleanUrl) {
                removeRow(j);
                if (j <= row)
                    row--;
                break;
            }
        }
        row = qMax(row, 0);
        const QModelIndex idx = fileSystemModel->index(cleanUrl);
        if (!fileSystemModel->isDir(idx))
            continue;
        insertRows(row, 1);
        setUrl(index(row, 0), url, idx);
        watching.append(qMakePair(idx, cleanUrl));
    }
}

void DirectoryNode::refresh()
{
    QFileInfoList fileList = _dirObject.entryInfoList(QDir::NoDotAndDotDot | QDir::AllEntries, QDir::DirsFirst | QDir::Name);

    QMap<Id, DirectoryNode*> subfolders;
    QMap<Id, FileNode*> files;

    // FIXME
    foreach (QFileInfo fileInfo, fileList) {
        if(fileInfo.isDir()){
            QString dirName = fileInfo.fileName();
            DirectoryNode *node;
            if(_subFolderNodes.contains(dirName)){
                node = _subFolderNodes.take(dirName);
            }else{
                node = new DirectoryNode(FileName::fromString(fileInfo.filePath()));
                appendRow(node);
            }
            subfolders.insert(dirName, node);
        }else if(fileInfo.isFile()){
            QString fileName = fileInfo.fileName();
            FileNode* node;
            if(_fileNodes.contains(fileName)){
                node = _fileNodes.take(fileName);
            }else{
                node = new FileNode(FileName::fromString(fileInfo.filePath()));
                appendRow(node);
            }
            files.insert(fileName, node);
        }
    }

    foreach (DirectoryNode* item, _subFolderNodes) {
        removeRow(item->row());
    }

/*!
    Add urls \a list into the list at \a row.  If move then movie
    existing ones to row.

    \sa dropMimeData()
*/
void QUrlModel::addUrls(const QList<QUrl> &list, int row, bool move)
{
    if (row == -1)
        row = rowCount();
    row = qMin(row, rowCount());
    for (int i = list.count() - 1; i >= 0; --i) {
        QUrl url = list.at(i);
        if (!url.isValid() || url.scheme() != QLatin1String("file"))
            continue;
        for (int j = 0; move && j < rowCount(); ++j) {
            if (index(j, 0).data(UrlRole) == url) {
                removeRow(j);
                if (j <= row)
                    row--;
                break;
            }
        }
        row = qMax(row, 0);
        QModelIndex idx = fileSystemModel->index(url.toLocalFile());
        if (!fileSystemModel->isDir(idx))
            continue;
        insertRows(row, 1);
        setUrl(index(row, 0), url, idx);
        watching.append(QPair<QModelIndex, QString>(idx, url.toLocalFile()));
    }
}

bool MLModel::event( QEvent *event )
{
    if ( event->type() == MLEvent::MediaAdded_Type )
    {
        event->accept();
        MLEvent *e = static_cast<MLEvent *>(event);
        vlc_array_t* p_result = vlc_array_new();
        if ( ml_FindMedia( e->p_ml, p_result, ML_ID, e->ml_media_id ) == VLC_SUCCESS )
        {
            insertResultArray( p_result );
            ml_DestroyResultArray( p_result );
        }
        vlc_array_destroy( p_result );
        return true;
    }
    else if( event->type() == MLEvent::MediaRemoved_Type )
    {
        event->accept();
        MLEvent *e = static_cast<MLEvent *>(event);
        removeRow( getIndexByMLID( e->ml_media_id ).row() );
        return true;
    }
    else if( event->type() == MLEvent::MediaUpdated_Type )
    {
        event->accept();
        /* Never implemented... */
        return true;
    }

    return VLCModel::event( event );
}

void AgentsModel::removeAgentConfig(const QString &agent_id)
{
    if (m_row2id.contains(agent_id)) {
        int removedRow = m_row2id.indexOf(agent_id);
        removeRow(removedRow);
    }
}

void TableEditor::endEdit(int row,int col,bool accept,bool replace)
{
	Q3Table::endEdit(row,col,accept,replace);
	setCellContentFromEditor(row,col);
	if(isEmptyRow(row)) if(numRows()>1) removeRow(row);
	if(!isEmptyRow(numRows()-1)) addEmptyRow();
}

		void ResourceLoader::handleDirectoryChanged (const QString& path)
		{
			emit watchedDirectoriesChanged ();

			for (auto i = Entry2Paths_.begin (), end = Entry2Paths_.end (); i != end; ++i)
				i->removeAll (path);

			QFileInfo fi (path);
			if (fi.exists () &&
					fi.isDir () &&
					fi.isReadable ())
				ScanPath (path);

			QStringList toRemove;
			for (auto i = Entry2Paths_.begin (), end = Entry2Paths_.end (); i != end; ++i)
				if (i->isEmpty ())
					toRemove << i.key ();

			Q_FOREACH (const auto& entry, toRemove)
			{
				Entry2Paths_.remove (entry);

				auto items = SubElemModel_->findItems (entry);
				Q_FOREACH (auto item, SubElemModel_->findItems (entry))
					SubElemModel_->removeRow (item->row ());
			}