| /* |
| * 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.psi.filters.classes; |
| |
| import com.intellij.psi.PsiClass; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.filters.ElementFilter; |
| import com.intellij.reference.SoftReference; |
| import com.intellij.util.ReflectionUtil; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: ik |
| * Date: 04.02.2003 |
| * Time: 12:40:51 |
| * To change this template use Options | File Templates. |
| */ |
| public class AssignableFromContextFilter implements ElementFilter{ |
| |
| @Override |
| public boolean isClassAcceptable(Class hintClass){ |
| return ReflectionUtil.isAssignable(PsiClass.class, hintClass); |
| } |
| |
| private SoftReference myCurrentContext = new SoftReference(null); |
| private SoftReference myCachedClass = new SoftReference(null); |
| @Override |
| public boolean isAcceptable(Object element, PsiElement context){ |
| if(myCurrentContext.get() != context){ |
| myCurrentContext = new SoftReference(context); |
| PsiElement cachedClass = context; |
| while(cachedClass != null && !(cachedClass instanceof PsiClass)) |
| cachedClass = cachedClass.getContext(); |
| myCachedClass = new SoftReference(cachedClass); |
| } |
| |
| if(myCachedClass.get() instanceof PsiClass && element instanceof PsiClass){ |
| final String qualifiedName = ((PsiClass)myCachedClass.get()).getQualifiedName(); |
| return qualifiedName != null && (qualifiedName.equals(((PsiClass)element).getQualifiedName()) |
| || ((PsiClass)element).isInheritor((PsiClass)myCachedClass.get(), true)); |
| |
| } |
| return false; |
| } |
| |
| public String toString(){ |
| return "assignable-from-context"; |
| } |
| } |
| |
| |