}
void updateListDependencies() {
String id = fStore
.getString(PreferenceConstants.EDITOR_FOLDING_PROVIDER);
PHPFoldingStructureProviderDescriptor desc = (PHPFoldingStructureProviderDescriptor) fProviderDescriptors
.get(id);
IPHPFoldingPreferenceBlock prefs;
if (desc == null) {
// safety in case there is no such descriptor
String message = PHPUIMessages.FoldingConfigurationBlock_error_not_exist;
PHPUiPlugin.log(new Status(IStatus.WARNING, PHPUiPlugin
.getPluginId(), IStatus.OK, message, null));
prefs = new ErrorPreferences(message);
} else {
prefs = (IPHPFoldingPreferenceBlock) fProviderPreferences.get(id);
if (prefs == null) {
try {
prefs = desc.createPreferences();
fProviderPreferences.put(id, prefs);
} catch (CoreException e) {
PHPUiPlugin.log(e);
prefs = new ErrorPreferences(e.getLocalizedMessage());
}