/** Update the feature types selection */
protected void updateTypesSelection() {
SchemaSpaceID space = getSchemaSpace();
TypeDefinition lastSelected = null;
ISelection lastSelection = typeDefinitions.getSelection();
if (!lastSelection.isEmpty() && lastSelection instanceof IStructuredSelection) {
lastSelected = (TypeDefinition) ((IStructuredSelection) lastSelection).getFirstElement();
}
DataSet dataset = (space == SchemaSpaceID.SOURCE) ? (DataSet.SOURCE) : (DataSet.TRANSFORMED);
InstanceService is = PlatformUI.getWorkbench().getService(InstanceService.class);
// get instance types
List<TypeDefinition> filteredTypes =
new ArrayList<TypeDefinition>(is.getInstanceTypes(dataset));
if (filteredTypes.isEmpty()) {
// if there are no instances present, show all types
SchemaService ss = PlatformUI.getWorkbench().getService(SchemaService.class);
filteredTypes =
new ArrayList<TypeDefinition>(ss.getSchemas(space).getMappingRelevantTypes());
}
typeDefinitions.setInput(filteredTypes);
// select the previously selected type if possible
TypeDefinition typeToSelect =
(filteredTypes.contains(lastSelected)) ? (lastSelected) : (null);
// fallback selection
if (typeToSelect == null && !filteredTypes.isEmpty()) {
typeToSelect = filteredTypes.iterator().next();
}
if (typeToSelect != null) {
typeDefinitions.setSelection(new StructuredSelection(typeToSelect));
}
boolean enabled = !filteredTypes.isEmpty();
typeDefinitions.getControl().setEnabled(enabled);
count.getControl().setEnabled(enabled);
layout(true, true);
updateSelection();
}
