void undo()
{
bool removed = false;
for (int i = 0; i < m_clonedElements.count(); ++i) {
Clone &clone = m_clonedElements[i];
QMT_CHECK(!clone.m_clonedElement);
MObject *owner = m_modelController->findObject<MObject>(clone.m_ownerKey);
QMT_CHECK(owner);
switch (clone.m_elementType) {
case TypeObject:
{
MObject *object = m_modelController->findObject<MObject>(clone.m_elementKey);
QMT_CHECK(object);
clone.m_indexOfElement = owner->children().indexOf(object);
QMT_CHECK(clone.m_indexOfElement >= 0);
emit m_modelController->beginRemoveObject(clone.m_indexOfElement, owner);
MCloneDeepVisitor visitor;
object->accept(&visitor);
clone.m_clonedElement = visitor.cloned();
m_modelController->unmapObject(object);
owner->removeChild(object);
emit m_modelController->endRemoveObject(clone.m_indexOfElement, owner);
removed = true;
break;
}
case TypeRelation:
{
MRelation *relation = m_modelController->findRelation<MRelation>(clone.m_elementKey);
QMT_CHECK(relation);
clone.m_indexOfElement = owner->relations().indexOf(relation);
QMT_CHECK(clone.m_indexOfElement >= 0);
emit m_modelController->beginRemoveRelation(clone.m_indexOfElement, owner);
MCloneDeepVisitor visitor;
relation->accept(&visitor);
clone.m_clonedElement = visitor.cloned();
m_modelController->unmapRelation(relation);
owner->removeRelation(relation);
emit m_modelController->endRemoveRelation(clone.m_indexOfElement, owner);
removed = true;
break;
}
default:
QMT_CHECK(false);
break;
}
}
if (removed) {
emit m_modelController->modified();
}
m_modelController->verifyModelIntegrity();
UndoCommand::undo();
}
