java/java-impl/src/com/intellij/psi/scope/ElementClassFilter.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
  17 /*
  18  * @author max
  19  */
  20 package com.intellij.psi.scope;
  21
  22 import com.intellij.psi.*;
  23 import com.intellij.psi.filters.ElementFilter;
  24
  25 public class ElementClassFilter implements ElementFilter {
  26   public static final ElementClassFilter PACKAGE_FILTER = new ElementClassFilter(ElementClassHint.DeclaractionKind.PACKAGE);
  27   public static final ElementClassFilter VARIABLE = new ElementClassFilter(ElementClassHint.DeclaractionKind.VARIABLE);
  28   public static final ElementClassFilter METHOD = new ElementClassFilter(ElementClassHint.DeclaractionKind.METHOD);
  29   public static final ElementClassFilter CLASS = new ElementClassFilter(ElementClassHint.DeclaractionKind.CLASS);
  30   public static final ElementClassFilter FIELD = new ElementClassFilter(ElementClassHint.DeclaractionKind.FIELD);
  31   public static final ElementClassFilter ENUM_CONST = new ElementClassFilter(ElementClassHint.DeclaractionKind.ENUM_CONST);
  32
  33   private final ElementClassHint.DeclaractionKind myKind;
  34
  35   private ElementClassFilter(ElementClassHint.DeclaractionKind kind) {
  36     myKind = kind;
  37   }
  38
  39   public boolean isAcceptable(Object element, PsiElement context) {
  40     switch (myKind) {
  41       case CLASS:
  42         return element instanceof PsiClass;
  43
  44       case ENUM_CONST:
  45         return element instanceof PsiEnumConstant;
  46
  47       case FIELD:
  48         return element instanceof PsiField;
  49
  50       case METHOD:
  51         return element instanceof PsiMethod;
  52
  53       case PACKAGE:
  54         return element instanceof PsiPackage;
  55
  56       case VARIABLE:
  57         return element instanceof PsiVariable;
  58     }
  59
  60     return false;
  61   }
  62
  63   public boolean isClassAcceptable(Class hintClass) {
  64     return true;
  65   }
  66 }