/**
* Reloads the extensions to the extension point.
*
* <p>This method can be called more than once in order to reload from a changed extension
* registry.
*/
public void reload() {
IExtensionRegistry registry = Platform.getExtensionRegistry();
List elements =
new ArrayList(
Arrays.asList(
registry.getConfigurationElementsFor(
DartToolsPlugin.getPluginId(), EXTENSION_POINT)));
Map map = new HashMap();
List all = new ArrayList();
List categories = getCategories(elements);
for (Iterator iter = elements.iterator(); iter.hasNext(); ) {
IConfigurationElement element = (IConfigurationElement) iter.next();
try {
CompletionProposalComputerDescriptor desc =
new CompletionProposalComputerDescriptor(element, this, categories);
Set partitions = desc.getPartitions();
for (Iterator it = partitions.iterator(); it.hasNext(); ) {
String partition = (String) it.next();
List list = (List) map.get(partition);
if (list == null) {
list = new ArrayList();
map.put(partition, list);
}
list.add(desc);
}
all.add(desc);
} catch (InvalidRegistryObjectException x) {
/*
* Element is not valid any longer as the contributing plug-in was unloaded or for some
* other reason. Do not include the extension in the list and inform the user about it.
*/
Object[] args = {element.toString()};
String message =
Messages.format(
DartTextMessages.CompletionProposalComputerRegistry_invalid_message, args);
IStatus status =
new Status(IStatus.WARNING, DartToolsPlugin.getPluginId(), IStatus.OK, message, x);
informUser(status);
}
}
synchronized (this) {
fCategories.clear();
fCategories.addAll(categories);
Set partitions = map.keySet();
fDescriptorsByPartition.keySet().retainAll(partitions);
fPublicDescriptorsByPartition.keySet().retainAll(partitions);
for (Iterator it = partitions.iterator(); it.hasNext(); ) {
String partition = (String) it.next();
List old = (List) fDescriptorsByPartition.get(partition);
List current = (List) map.get(partition);
if (old != null) {
old.clear();
old.addAll(current);
} else {
fDescriptorsByPartition.put(partition, current);
fPublicDescriptorsByPartition.put(partition, Collections.unmodifiableList(current));
}
}
fDescriptors.clear();
fDescriptors.addAll(all);
}
}
