java/java-impl/src/com/intellij/psi/filters/element/ReferenceOnFilter.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.psi.filters.element;
  17
  18 import com.intellij.psi.PsiElement;
  19 import com.intellij.psi.PsiJavaCodeReferenceElement;
  20 import com.intellij.psi.PsiJavaReference;
  21 import com.intellij.psi.filters.ElementFilter;
  22 import com.intellij.psi.filters.position.PositionElementFilter;
  23 import com.intellij.util.ReflectionCache;
  24
  25 /**
  26  * Created by IntelliJ IDEA.
  27  * User: ik
  28  * Date: 07.02.2003
  29  * Time: 17:25:04
  30  * To change this template use Options | File Templates.
  31  */
  32 public class ReferenceOnFilter extends PositionElementFilter{
  33   public ReferenceOnFilter(ElementFilter filter){
  34     setFilter(filter);
  35   }
  36
  37   public boolean isClassAcceptable(Class hintClass){
  38     return ReflectionCache.isAssignable(PsiJavaCodeReferenceElement.class, hintClass);
  39   }
  40
  41   public boolean isAcceptable(Object element, PsiElement context){
  42     if (!(element instanceof PsiElement)) return false;
  43     PsiElement parent = ((PsiElement) element).getParent();
  44     return parent instanceof PsiJavaCodeReferenceElement &&
  45            getFilter().isAcceptable(((PsiJavaReference)parent).advancedResolve(true).getElement(), context);
  46   }
  47 }