java/java-impl/src/com/intellij/refactoring/util/JavaNonCodeSearchElementDescriptionProvider.java

/*
 * Copyright 2000-2009 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.refactoring.util;

import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.*;
import org.jetbrains.annotations.NotNull;

/**
 * @author yole
 */
public class JavaNonCodeSearchElementDescriptionProvider implements ElementDescriptionProvider {
  @Override
  public String getElementDescription(@NotNull final PsiElement element, @NotNull final ElementDescriptionLocation location) {
    if (!(location instanceof NonCodeSearchDescriptionLocation)) return null;
    NonCodeSearchDescriptionLocation ncdLocation = (NonCodeSearchDescriptionLocation) location;
    if (element instanceof PsiPackage) {
      return ncdLocation.isNonJava() ? ((PsiPackage)element).getQualifiedName() : StringUtil.notNullize(((PsiPackage)element).getName());
    }
    if (element instanceof PsiClass) {
      return ncdLocation.isNonJava() ? ((PsiClass)element).getQualifiedName() : ((PsiClass)element).getName();
    }
    if (element instanceof PsiMember) {
      PsiMember member = (PsiMember)element;
      String name = member.getName();
      if (name == null) return null;
      if (!ncdLocation.isNonJava()) {
        return name;
      }
      PsiClass containingClass = member.getContainingClass();
      if (containingClass == null || containingClass.getQualifiedName() == null) return null;
      return containingClass.getQualifiedName() + "." + name;
    }
    return null;
  }
}