for (Iterator<AbstractContextModification> it = getViewComponent().getContext().getHistory().iterator(); it.hasNext();) {
// add(new ContextModificationRow(this,getViewComponent().getContext().getHistory().get(i)));
AbstractContextModification modification = it.next();
// if (modification.canUndo()) {
JCheckBox checkBox = new JCheckBox();
checkBox.addItemListener(this);
modificationsHash.put(modification, checkBox);
ContextModificationRow modificationRow =
new ContextModificationRow(modification,checkBox, viewComponent.getRenderer());
add(modificationRow);
add(Box.createRigidArea(new Dimension(0, 5)));