public Object[] get(final PsiElement context, CompletionContext completionContext) {
XmlFile containingFile = null;
XmlFile descriptorFile = null;
final XmlTag tag = PsiTreeUtil.getParentOfType(context, XmlTag.class);
if (tag != null) {
containingFile = (XmlFile) tag.getContainingFile();
descriptorFile = findDescriptorFile(tag, containingFile);
} else {
final XmlDocument document = PsiTreeUtil.getParentOfType(context, XmlDocument.class);
if (document != null) {
containingFile = (XmlFile) document.getContainingFile();
final FileType ft = containingFile.getFileType();
if (ft != StdFileTypes.XML) {
final String namespace =
ft == StdFileTypes.XHTML || ft == StdFileTypes.JSPX
? XmlUtil.XHTML_URI
: XmlUtil.HTML_URI;
final XmlNSDescriptor nsDescriptor = document.getDefaultNSDescriptor(namespace, true);
if (nsDescriptor != null) {
descriptorFile = nsDescriptor.getDescriptorFile();
}
}
}
}
if (descriptorFile != null) {
final List<Object> results = new ArrayList<Object>();
final boolean acceptSystemEntities = containingFile.getFileType() == StdFileTypes.XML;
final PsiElementProcessor processor =
new PsiElementProcessor() {
public boolean execute(@NotNull final PsiElement element) {
if (element instanceof XmlEntityDecl) {
final XmlEntityDecl xmlEntityDecl = (XmlEntityDecl) element;
if (xmlEntityDecl.isInternalReference() || acceptSystemEntities) {
final String name = xmlEntityDecl.getName();
final Object _item = getLookupItem(xmlEntityDecl);
results.add(_item == null ? name : _item);
}
}
return true;
}
};
XmlUtil.processXmlElements(descriptorFile, processor, true);
if (descriptorFile != containingFile && containingFile.getFileType() == StdFileTypes.XML) {
final XmlProlog element = containingFile.getDocument().getProlog();
if (element != null) XmlUtil.processXmlElements(element, processor, true);
}
return ArrayUtil.toObjectArray(results);
}
return ArrayUtil.EMPTY_OBJECT_ARRAY;
}
public static XmlFile findDescriptorFile(final XmlTag tag, final XmlFile containingFile) {
final XmlElementDescriptor descriptor = tag.getDescriptor();
final XmlNSDescriptor nsDescriptor = descriptor != null ? descriptor.getNSDescriptor() : null;
XmlFile descriptorFile =
nsDescriptor != null
? nsDescriptor.getDescriptorFile()
: containingFile.getDocument().getProlog().getDoctype() != null ? containingFile : null;
if (nsDescriptor != null
&& (descriptorFile == null
|| descriptorFile.getName().equals(containingFile.getName() + ".dtd"))) {
descriptorFile = containingFile;
}
return descriptorFile;
}