xml/dom-impl/src/com/intellij/util/xml/impl/DomMetaDataContributor.java

/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.util.xml.impl;

import com.intellij.psi.PsiElement;
import com.intellij.psi.filters.ElementFilter;
import com.intellij.psi.meta.MetaDataContributor;
import com.intellij.psi.meta.MetaDataRegistrar;
import com.intellij.psi.xml.XmlTag;
import com.intellij.util.xml.DomElement;
import com.intellij.util.xml.DomManager;
import com.intellij.util.xml.DomMetaData;

/**
 * @author yole
 */
public class DomMetaDataContributor implements MetaDataContributor {
  @Override
  public void contributeMetaData(MetaDataRegistrar registrar) {
    registrar.registerMetaData(new ElementFilter() {
      @Override
      public boolean isAcceptable(Object element, PsiElement context) {
        if (element instanceof XmlTag) {
          final XmlTag tag = (XmlTag)element;
          final DomElement domElement = DomManager.getDomManager(tag.getProject()).getDomElement(tag);
          if (domElement != null) {
            return domElement.getGenericInfo().getNameDomElement(domElement) != null;
          }
        }
        return false;
      }

      @Override
      public boolean isClassAcceptable(Class hintClass) {
        return XmlTag.class.isAssignableFrom(hintClass);
      }
    }, DomMetaData.class);
  }
}