java/java-impl/src/com/intellij/ide/hierarchy/type/SupertypesHierarchyTreeStructure.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.ide.hierarchy.type;
  17
  18 import com.intellij.ide.hierarchy.HierarchyNodeDescriptor;
  19 import com.intellij.ide.hierarchy.HierarchyTreeStructure;
  20 import com.intellij.openapi.project.Project;
  21 import com.intellij.psi.JavaPsiFacade;
  22 import com.intellij.psi.PsiClass;
  23
  24 import java.util.ArrayList;
  25 import java.util.List;
  26
  27 public final class SupertypesHierarchyTreeStructure extends HierarchyTreeStructure {
  28
  29   public SupertypesHierarchyTreeStructure(final Project project, final PsiClass aClass) {
  30     super(project, new TypeHierarchyNodeDescriptor(project, null, aClass, true));
  31   }
  32
  33   protected final Object[] buildChildren(final HierarchyNodeDescriptor descriptor) {
  34     final PsiClass psiClass = ((TypeHierarchyNodeDescriptor)descriptor).getPsiClass();
  35     final PsiClass[] supers = psiClass.getSupers();
  36     final List<HierarchyNodeDescriptor> descriptors = new ArrayList<HierarchyNodeDescriptor>();
  37     PsiClass objectClass = JavaPsiFacade.getInstance(myProject).findClass("java.lang.Object", psiClass.getResolveScope());
  38     for (PsiClass aSuper : supers) {
  39       if (!psiClass.isInterface() || !aSuper.equals(objectClass)) {
  40         descriptors.add(new TypeHierarchyNodeDescriptor(myProject, descriptor, aSuper, false));
  41       }
  42     }
  43     return descriptors.toArray(new HierarchyNodeDescriptor[descriptors.size()]);
  44   }
  45 }