/** sets the enabled/disabled state of the menu items */
private void setMenu() {
boolean isNumeric;
boolean hasColumns;
boolean hasRows;
boolean attSelected;
ArffSortedTableModel model;
boolean isNull;
model = (ArffSortedTableModel) m_TableArff.getModel();
isNull = (model.getInstances() == null);
hasColumns = !isNull && (model.getInstances().numAttributes() > 0);
hasRows = !isNull && (model.getInstances().numInstances() > 0);
attSelected = hasColumns && (m_CurrentCol > 0);
isNumeric = attSelected && (model.getAttributeAt(m_CurrentCol).isNumeric());
menuItemUndo.setEnabled(canUndo());
menuItemCopy.setEnabled(true);
menuItemSearch.setEnabled(true);
menuItemClearSearch.setEnabled(true);
menuItemMean.setEnabled(isNumeric);
menuItemSetAllValues.setEnabled(attSelected);
menuItemSetMissingValues.setEnabled(attSelected);
menuItemReplaceValues.setEnabled(attSelected);
menuItemRenameAttribute.setEnabled(attSelected);
menuItemDeleteAttribute.setEnabled(attSelected);
menuItemDeleteAttributes.setEnabled(attSelected);
menuItemSortInstances.setEnabled(hasRows && attSelected);
menuItemDeleteSelectedInstance.setEnabled(hasRows && m_TableArff.getSelectedRow() > -1);
menuItemDeleteAllSelectedInstances.setEnabled(
hasRows && (m_TableArff.getSelectedRows().length > 0));
}
/** deletes all the currently selected instances */
public void deleteInstances() {
int[] indices;
if (m_TableArff.getSelectedRow() == -1) return;
indices = m_TableArff.getSelectedRows();
((ArffSortedTableModel) m_TableArff.getModel()).deleteInstances(indices);
}
/** deletes the currently selected instance */
public void deleteInstance() {
int index;
index = m_TableArff.getSelectedRow();
if (index == -1) return;
((ArffSortedTableModel) m_TableArff.getModel()).deleteInstanceAt(index);
}
