/**
* Transforms a string value into a list of {@link IContextualMenu}. The string value has to own
* the id of the descriptors, separated by the separator {@link SEPARATOR}.
*
* @param descriptors The string value.
* @return The list.
*/
public List<IContextualMenu> getFilters(String descriptors) {
final List<IContextualMenu> result = new ArrayList<IContextualMenu>();
for (ContextualMenuDescriptor desc : getDescriptors(descriptors)) {
result.add(desc.getExtension());
}
return result;
}
/**
* Transforms a list of {@link ContextualMenuDescriptor} into a string value which owns the id of
* the descriptors, separated by the separator {@link SEPARATOR}.
*
* @param descriptors The descriptors.
* @return The result.
*/
public String getDescriptors(List<ContextualMenuDescriptor> descriptors) {
boolean firstElement = true;
final StringBuffer result = new StringBuffer();
for (ContextualMenuDescriptor desc : descriptors) {
if (!firstElement) {
result.append(SEPARATOR);
}
result.append(desc.getID());
firstElement = false;
}
return result.toString();
}
/**
* Removes a given descriptor from the list of known contributions.
*
* @param element The element for which we are to remove a descriptor for.
*/
public synchronized void removeExtension(IConfigurationElement element) {
final ContextualMenuDescriptor desc = new ContextualMenuDescriptor(element);
storage.remove(desc.getID());
}
/**
* Adds a descriptor for the given configuration element to the list of contributed extensions.
*
* @param element The element for which we are to add a descriptor for.
*/
public synchronized void addExtension(IConfigurationElement element) {
final ContextualMenuDescriptor desc = new ContextualMenuDescriptor(element);
storage.put(desc.getID(), desc);
}