private ClipboardData getClipboardData(ITypeRoot inputElement, int offset, int length) {
CompilationUnit astRoot =
SharedASTProvider.getAST(inputElement, SharedASTProvider.WAIT_ACTIVE_ONLY, null);
if (astRoot == null) {
return null;
}
// do process import if selection spans over import declaration or package
List<ImportDeclaration> list = astRoot.imports();
if (!list.isEmpty()) {
if (offset < ((ASTNode) list.get(list.size() - 1)).getStartPosition()) {
return null;
}
} else if (astRoot.getPackage() != null) {
if (offset < ((ASTNode) astRoot.getPackage()).getStartPosition()) {
return null;
}
}
ArrayList<SimpleName> typeImportsRefs = new ArrayList<SimpleName>();
ArrayList<SimpleName> staticImportsRefs = new ArrayList<SimpleName>();
ImportReferencesCollector.collect(
astRoot,
inputElement.getJavaProject(),
new Region(offset, length),
typeImportsRefs,
staticImportsRefs);
if (typeImportsRefs.isEmpty() && staticImportsRefs.isEmpty()) {
return null;
}
HashSet<String> namesToImport = new HashSet<String>(typeImportsRefs.size());
for (int i = 0; i < typeImportsRefs.size(); i++) {
Name curr = typeImportsRefs.get(i);
IBinding binding = curr.resolveBinding();
if (binding != null && binding.getKind() == IBinding.TYPE) {
ITypeBinding typeBinding = (ITypeBinding) binding;
if (typeBinding.isArray()) {
typeBinding = typeBinding.getElementType();
}
if (typeBinding.isTypeVariable()
|| typeBinding.isCapture()
|| typeBinding.isWildcardType()) { // can be removed when bug 98473 is fixed
continue;
}
if (typeBinding.isMember() || typeBinding.isTopLevel()) {
String name = Bindings.getRawQualifiedName(typeBinding);
if (name.length() > 0) {
namesToImport.add(name);
}
}
}
}
HashSet<String> staticsToImport = new HashSet<String>(staticImportsRefs.size());
for (int i = 0; i < staticImportsRefs.size(); i++) {
Name curr = staticImportsRefs.get(i);
IBinding binding = curr.resolveBinding();
if (binding != null) {
StringBuffer buf = new StringBuffer(Bindings.getImportName(binding));
if (binding.getKind() == IBinding.METHOD) {
buf.append("()"); // $NON-NLS-1$
}
staticsToImport.add(buf.toString());
}
}
if (namesToImport.isEmpty() && staticsToImport.isEmpty()) {
return null;
}
String[] typeImports = namesToImport.toArray(new String[namesToImport.size()]);
String[] staticImports = staticsToImport.toArray(new String[staticsToImport.size()]);
return new ClipboardData(inputElement, typeImports, staticImports);
}
private CompilationUnit getASTRoot(ICompilationUnit compilationUnit) {
return SharedASTProvider.getAST(
compilationUnit, SharedASTProvider.WAIT_NO, new NullProgressMonitor());
}