void (final @NotNull PsiReferenceRegistrar registrar) { final IdReferenceProvider idReferenceProvider = new IdReferenceProvider(); XmlUtil.registerXmlAttributeValueReferenceProvider(registrar, idReferenceProvider.getIdForAttributeNames(), idReferenceProvider.getIdForFilter(), true, idReferenceProvider, PsiReferenceRegistrar.DEFAULT_PRIORITY); final DtdReferencesProvider dtdReferencesProvider = new DtdReferencesProvider(); //registerReferenceProvider(null, XmlEntityDecl.class,dtdReferencesProvider); registrar.registerReferenceProvider(PlatformPatterns.psiElement(XmlEntityRef.class), dtdReferencesProvider); registrar.registerReferenceProvider(PlatformPatterns.psiElement(XmlDoctype.class), dtdReferencesProvider); registrar.registerReferenceProvider(PlatformPatterns.psiElement(XmlElementDecl.class), dtdReferencesProvider); registrar.registerReferenceProvider(PlatformPatterns.psiElement(XmlAttlistDecl.class), dtdReferencesProvider); registrar.registerReferenceProvider(PlatformPatterns.psiElement(XmlElementContentSpec.class), dtdReferencesProvider); registrar.registerReferenceProvider(PlatformPatterns.psiElement(XmlToken.class), dtdReferencesProvider); URIReferenceProvider uriProvider = new URIReferenceProvider(); XmlUtil.registerXmlAttributeValueReferenceProvider(registrar, null, dtdReferencesProvider.getSystemReferenceFilter(), uriProvider); XmlUtil.registerXmlAttributeValueReferenceProvider(registrar, new String[] { "href" }, new ScopeFilter( new ParentElementFilter( new AndFilter( new AndFilter(XmlTagFilter.INSTANCE, new XmlTextFilter("include")), new NamespaceFilter(XmlUtil.XINCLUDE_URI) ), 2 ) ), true, new XmlBaseReferenceProvider(true)); registrar.registerReferenceProvider(xmlAttributeValue().withLocalName("base").withNamespace(XmlUtil.XML_NAMESPACE_URI), new XmlBaseReferenceProvider(false)); XmlUtil.registerXmlAttributeValueReferenceProvider( registrar, new String[]{MicrodataUtil.ITEM_TYPE}, null, new MicrodataReferenceProvider() ); final SchemaReferencesProvider schemaReferencesProvider = new SchemaReferencesProvider(); XmlUtil.registerXmlAttributeValueReferenceProvider(registrar, schemaReferencesProvider.getCandidateAttributeNamesForSchemaReferences(), new ScopeFilter( new ParentElementFilter( new NamespaceFilter(XmlUtil.SCHEMA_URIS), 2 ) ), schemaReferencesProvider ); registrar.registerReferenceProvider(xmlAttributeValue(xmlAttribute().withNamespace(XmlUtil.XML_SCHEMA_INSTANCE_URI)). withLocalName("type"), schemaReferencesProvider); registrar.registerReferenceProvider(xmlAttributeValue(xmlAttribute().withNamespace(XmlUtil.XML_SCHEMA_INSTANCE_URI)). withLocalName("noNamespaceSchemaLocation", "schemaLocation"), uriProvider); registrar.registerReferenceProvider( xmlAttributeValue().withLocalName("schemaLocation","namespace"). withSuperParent(2, xmlTag().withNamespace(XmlUtil.SCHEMA_URIS).withLocalName("import", "include","redefine")), uriProvider); XmlUtil.registerXmlAttributeValueReferenceProvider(registrar, null, URIReferenceProvider.ELEMENT_FILTER, true, uriProvider); XmlUtil.registerXmlAttributeValueReferenceProvider(registrar, new String[] {"encoding"}, new ScopeFilter(new ParentElementFilter(new ClassFilter(XmlProcessingInstruction.class))), true, new XmlEncodingReferenceProvider()); registrar.registerReferenceProvider(xmlAttributeValue(), new XmlPrefixReferenceProvider()); registrar.registerReferenceProvider(xmlAttributeValue(), new XmlEnumeratedValueReferenceProvider(), PsiReferenceRegistrar.LOWER_PRIORITY); registrar.registerReferenceProvider(xmlTag(), XmlEnumeratedValueReferenceProvider.forTags(), PsiReferenceRegistrar.LOWER_PRIORITY); registrar.registerReferenceProvider(xmlAttributeValue().withLocalName("source") .withSuperParent(2, xmlTag().withLocalName("documentation").withNamespace(XmlUtil.SCHEMA_URIS)), new PsiReferenceProvider() { @Override public PsiReference @NotNull [] getReferencesByElement(@NotNull PsiElement element, @NotNull ProcessingContext context) { return new PsiReference[] { new WebReference(element) }; } }); }