xml/impl/src/com/intellij/codeInsight/hint/TagDeclarationRangeHandler.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.codeInsight.hint;

import org.jetbrains.annotations.NotNull;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.xml.XmlTag;
import com.intellij.psi.xml.XmlToken;
import com.intellij.psi.xml.XmlTokenType;

public class TagDeclarationRangeHandler implements DeclarationRangeHandler {
  @Override
  @NotNull
  public TextRange getDeclarationRange(@NotNull final PsiElement container) {
    XmlTag xmlTag = (XmlTag)container;
    int endOffset = xmlTag.getTextRange().getStartOffset();

    for (PsiElement child = xmlTag.getFirstChild(); child != null; child = child.getNextSibling()) {
      endOffset = child.getTextRange().getEndOffset();
      if (child instanceof XmlToken) {
        XmlToken token = (XmlToken)child;
        IElementType tokenType = token.getTokenType();
        if (tokenType == XmlTokenType.XML_EMPTY_ELEMENT_END || tokenType == XmlTokenType.XML_TAG_END) break;
      }
    }

    return new TextRange(xmlTag.getTextRange().getStartOffset(), endOffset);
  }
}