Java 类com.intellij.psi.impl.source.html.dtd.HtmlElementDescriptorImpl 实例源码

@Override
public void addTagNameVariants(List<LookupElement> elements, @NotNull XmlTag tag, String prefix)
{
    final List<String> namespaces;
    if(prefix.isEmpty())
    {
        namespaces = new ArrayList<>(Arrays.asList(tag.knownNamespaces()));
        namespaces.add(XmlUtil.EMPTY_URI); // empty namespace
    }
    else
    {
        namespaces = new ArrayList<>(Collections.singletonList(tag.getNamespace()));
    }
    PsiFile psiFile = tag.getContainingFile();
    XmlExtension xmlExtension = XmlExtension.getExtension(psiFile);
    List<String> nsInfo = new ArrayList<>();
    List<XmlElementDescriptor> variants = TagNameVariantCollector.getTagDescriptors(tag, namespaces, nsInfo);

    if(variants.isEmpty() && psiFile instanceof XmlFile && ((XmlFile) psiFile).getRootTag() == tag)
    {
        getRootTagsVariants(tag, elements);
        return;
    }

    final Set<String> visited = new HashSet<>();
    for(int i = 0; i < variants.size(); i++)
    {
        XmlElementDescriptor descriptor = variants.get(i);
        String qname = descriptor.getName(tag);
        if(!visited.add(qname))
        {
            continue;
        }
        if(!prefix.isEmpty() && qname.startsWith(prefix + ":"))
        {
            qname = qname.substring(prefix.length() + 1);
        }

        PsiElement declaration = descriptor.getDeclaration();
        if(declaration != null && !declaration.isValid())
        {
            LOG.error(descriptor + " contains invalid declaration: " + declaration);
        }
        LookupElementBuilder lookupElement = declaration == null ? LookupElementBuilder.create(qname) : LookupElementBuilder.create(declaration, qname);
        final int separator = qname.indexOf(':');
        if(separator > 0)
        {
            lookupElement = lookupElement.withLookupString(qname.substring(separator + 1));
        }
        String ns = nsInfo.get(i);
        if(StringUtil.isNotEmpty(ns))
        {
            lookupElement = lookupElement.withTypeText(ns, true);
        }
        if(descriptor instanceof PsiPresentableMetaData)
        {
            lookupElement = lookupElement.withIcon(((PsiPresentableMetaData) descriptor).getIcon());
        }
        if(xmlExtension.useXmlTagInsertHandler())
        {
            lookupElement = lookupElement.withInsertHandler(XmlTagInsertHandler.INSTANCE);
        }
        lookupElement = lookupElement.withCaseSensitivity(!(descriptor instanceof HtmlElementDescriptorImpl));
        elements.add(PrioritizedLookupElement.withPriority(lookupElement, separator > 0 ? 0 : 1));
    }
}