private static String getRenameKind(IJavaElement e) {
switch (e.getElementType()) {
case IJavaElement.COMPILATION_UNIT:
return IJavaRefactorings.RENAME_COMPILATION_UNIT;
case IJavaElement.FIELD:
return IJavaRefactorings.RENAME_FIELD;
case IJavaElement.LOCAL_VARIABLE:
return IJavaRefactorings.RENAME_LOCAL_VARIABLE;
case IJavaElement.METHOD:
return IJavaRefactorings.RENAME_METHOD;
case IJavaElement.TYPE:
return IJavaRefactorings.RENAME_TYPE;
case IJavaElement.TYPE_PARAMETER:
return IJavaRefactorings.RENAME_TYPE_PARAMETER;
case IJavaElement.PACKAGE_FRAGMENT:
return IJavaRefactorings.RENAME_PACKAGE;
case IJavaElement.PACKAGE_FRAGMENT_ROOT:
return IJavaRefactorings.RENAME_PACKAGE;
default:
throw new RuntimeException("Unexpected object `" + e.getClass() + "' to rename");
}
}
/**
* Called when an IJavaElement changes. Used to reflect changes in the editor, which has a view
* that is based on the <code>JavaModel</code>.
*
* @param event - The change that occurred to the <code>JavaModel</code>.
*/
@SuppressWarnings("unchecked")
public void elementChanged(ElementChangedEvent event) {
try {
/* Goes through these classes looking for any that are added, moved
* or removed. Calls methods that updates the editor to reflect any
* changes found.
*/
for (Class type : map.keySet()) {
List<IJavaElementDelta> added = findAddedElements(event.getDelta(), type);
List<IJavaElementDelta> removed = findRemovedElements(event.getDelta(), type);
List<IJavaElementDelta> changed = findChangedElements(event.getDelta(), type);
HashMap<IJavaElement, IJavaElement> moved = extractMovedElements(added, removed);
// ignore updating the editors if no changes occurred
if (added.size() == 0 && removed.size() == 0 && moved.size() == 0 && changed.size() == 0) {
continue;
}
List<DiagramEditor> editors = new ArrayList<DiagramEditor>(DiagramEditor.getEditors());
// handle changes
for (DiagramEditor editor : editors) {
RootModel root = editor.getRootModel();
// handle moves
for (IJavaElement sourceElement : moved.keySet()) {
IJavaElement targetElement = moved.get(sourceElement);
map.get(sourceElement.getClass()).handleMove(root, sourceElement, targetElement);
}
// handle removes
for (IJavaElementDelta removedElement : removed) {
map.get(removedElement.getElement().getClass())
.handleRemove(root, removedElement.getElement());
}
// handle adds
for (IJavaElementDelta addedElement : added) {
map.get(addedElement.getElement().getClass())
.handleAdd(root, addedElement.getElement());
}
// handle changes (to modifiers, etc.)
for (IJavaElementDelta changedElement : changed) {
handleElementChange(changedElement);
}
editor.forceRefreshRelationships();
}
}
} catch (Throwable t) {
// TODO Incremental exploration throws Null Pointer. Virtually unreproduceable.
GreenException.critical(t);
} finally {
TypeRefactorHandler.REMOVED_TYPE = null;
}
}
public JavaRefactoringDescriptor buildEclipseDescriptor() throws Exception {
System.err.println("[eclipse-rename] Building descriptor...");
IJavaElement element = location.getIJavaElement();
String kind = getRenameKind(element);
// [1] BUGFIX was needed: The scripting interface didn't allow VariableDeclarationFragments as
// IJavaElements
// and thus had to be extended
// [2] WORKAROUND for scripting interface bug (see below)
if (kind.equals(IJavaRefactorings.RENAME_METHOD)) {
IMethod m = (IMethod) element;
if (m.isConstructor()) {
// Rename the type instead (as the UI would do-- the scripting interface will only rename
// the constructor, which is broken)
kind = IJavaRefactorings.RENAME_TYPE;
element = m.getDeclaringType();
}
}
System.err.println("[eclipse-rename] Kind = " + kind + ", element = " + element);
// [3] Don't test for package fragments now
if (kind.equals(IJavaRefactorings.RENAME_PACKAGE)) return null; // don't bother with this now
if (element == null) {
System.err.println("!!! ABORT: No IJavaElement to represent location");
throw new RuntimeException("!!! ABORT: No IJavaElement for location");
}
if (element instanceof ILocalVariable) {
System.err.println("element is of type " + element.getClass());
final ILocalVariable fLocalVariable = (ILocalVariable) element;
final ISourceRange sourceRange = fLocalVariable.getNameRange();
final CompilationUnit fCompilationUnitNode = location.getCompilationUnit();
ASTNode name = NodeFinder.perform(fCompilationUnitNode, sourceRange);
System.err.println("node is of type " + name.getClass());
if (name == null) System.err.println("!!! ILV doesn't have associated name!");
if (name.getParent() instanceof VariableDeclaration)
System.err.println("ILV has parent : " + (VariableDeclaration) name.getParent());
else
System.err.println(
"!!! ILV doesn't have var declaration parent, instead " + name.getParent().getClass());
}
System.err.println("Trying to rename a " + kind + ": " + element);
if (element instanceof SimpleName)
System.err.println(" Name = '" + ((SimpleName) element).getIdentifier() + "'");
if (kind.equals(IJavaRefactorings.RENAME_TYPE)) {
System.err.println("(Possibly need a new launch configuration)");
tproject.renameClass((IType) element, new_name);
}
final RenameJavaElementDescriptor descriptor =
(RenameJavaElementDescriptor) getDescriptor(kind);
descriptor.setJavaElement(element);
descriptor.setNewName(this.new_name);
if (element.getElementType() == IJavaElement.TYPE
|| element.getElementType() == IJavaElement.PACKAGE_FRAGMENT)
descriptor.setUpdateQualifiedNames(true);
else descriptor.setUpdateQualifiedNames(false);
descriptor.setUpdateReferences(true);
descriptor.setDeprecateDelegate(false);
descriptor.setRenameGetters(false);
descriptor.setRenameSetters(false);
descriptor.setKeepOriginal(false);
descriptor.setUpdateHierarchy(false);
descriptor.setUpdateSimilarDeclarations(false);
// [3] Fix: Eclipse will complain if the transformation is a no-op, but we don't want that:
if (element.getElementName().equals(this.new_name)) throw new NOPException();
System.err.println("[eclipse-rename] Computed descriptor.");
return descriptor;
}