java/java-impl/src/com/intellij/codeInsight/navigation/JavaGotoTargetRendererProvider.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.navigation;
  17
  18 import com.intellij.ide.util.PsiElementListCellRenderer;
  19 import com.intellij.ide.util.MethodCellRenderer;
  20 import com.intellij.ide.util.PsiClassListCellRenderer;
  21 import com.intellij.psi.PsiElement;
  22 import com.intellij.psi.PsiMethod;
  23 import com.intellij.psi.PsiClass;
  24 import com.intellij.psi.util.PsiUtil;
  25
  26 import java.util.Arrays;
  27
  28 /**
  29  * @author yole
  30  */
  31 public class JavaGotoTargetRendererProvider implements GotoTargetRendererProvider {
  32   public PsiElementListCellRenderer getRenderer(final PsiElement[] elements) {
  33     boolean onlyMethods = true;
  34     boolean onlyClasses = true;
  35     for (PsiElement element : elements) {
  36       if (!(element instanceof PsiMethod)) onlyMethods = false;
  37       if (!(element instanceof PsiClass)) onlyClasses = false;
  38     }
  39     if (onlyMethods) {
  40       return new MethodCellRenderer(!PsiUtil.allMethodsHaveSameSignature(Arrays.asList(elements).toArray(PsiMethod.EMPTY_ARRAY)));
  41     }
  42     else if (onlyClasses) {
  43       return new PsiClassListCellRenderer();
  44     }
  45     return null;
  46   }
  47
  48 }