// setSlotComponent() -- Sets a single component
bool Component::setSlotComponent(Component* const single)
{
// When a only one component ... make it a PairStream
PairStream* tmp = new PairStream();
tmp->put( new Pair("1", single) );
// Process the new components list and swap
processComponents(tmp, typeid(Component));
tmp->unref();
return true;
}
bool StateMachine::setSlotStateMachines(const PairStream* const msg)
{
// First remove the old list; and make sure we tell the old stMachList
// that we're no longer their container.
if (stMachList != nullptr) {
List::Item* item = stMachList->getFirstItem();
while (item != nullptr) {
Pair* p = static_cast<Pair*>(item->getValue());
Component* q = static_cast<Component*>(p->object());
q->container(nullptr);
item = item->getNext();
}
stMachList = nullptr;
}
// Build a new list containing only StateMachine class (or derived) objects
if (msg != nullptr) {
PairStream* newList = new PairStream();
// For each object in the list; if it's a StateMachine (or derived from) then
// clone the object and add it to the new list.
const List::Item* item = msg->getFirstItem();
while (item != nullptr) {
const Pair* p = static_cast<const Pair*>(item->getValue());
const StateMachine* q = dynamic_cast<const StateMachine*>(p->object());
if (q != nullptr) {
Pair* cp = static_cast<Pair*>(p->clone());
StateMachine* cq = static_cast<StateMachine*>(cp->object());
cq->container(this);
newList->put(cp);
}
else {
std::cerr << "StateMachine::setSlotStateMachines(): " << *p->slot() << " is not a StateMachine!" << std::endl;
}
item = item->getNext();
}
// Set the pointer to the new stMach list
stMachList = newList;
}
return true;
}
//------------------------------------------------------------------------------
// processComponents() -- process our new components list;
// -- Add the components from the input list, 'list', to a new list, 'newList'
// make sure they are all of type Component (or derived from it)
// tell them that we are their container
// -- Add an optional component to the end of the new list
// -- Swap our 'components' list with the new list, newList
// -- Handle selections.
//------------------------------------------------------------------------------
void Component::processComponents(
PairStream* const list,
const std::type_info& filter,
Pair* const add,
Component* const remove
)
{
PairStream* oldList = components.getRefPtr();
// ---
// Our dynamic_cast (see below) already filters on the Component class
// ---
bool skipFilter = false;
if (&filter == 0) skipFilter = true;
else if (filter == typeid(Component)) skipFilter = true;
// ---
// Create a new list, copy (filter) the component pairs and set their container pointers
// ---
PairStream* newList = new PairStream();
if (list != 0) {
// Add the (filtered) components to the new list and set their container
List::Item* item = list->getFirstItem();
while (item != 0) {
Pair* pair = (Pair*) item->getValue();
Component* cp = dynamic_cast<Component*>( pair->object() );
if ( cp != 0 && cp != remove && (skipFilter || cp->isClassType(filter)) ) {
newList->put(pair);
cp->container(this);
}
else if ( cp != 0 && cp == remove ) {
cp->container(0);
}
item = item->getNext();
}
}
// ---
// Add the optional component
// ---
if (add != 0) {
Component* cp = dynamic_cast<Component*>( add->object() );
if ( cp != 0 && (skipFilter || cp->isClassType(filter)) ) {
newList->put(add);
cp->container(this);
}
}
// ---
// Swap lists
// ---
components = newList;
newList->unref();
// ---
// Anything selected?
// ---
if (selection != 0) {
if (selection->isClassType(typeid(String))) {
String str(*((String*)selection));
select(&str);
}
else {
Integer num(((Number*)selection)->getInt());
select(&num);
}
}
if (oldList != 0) {
oldList->unref();
}
}