platform/lang-impl/src/com/intellij/usageView/UsageViewLongNameLocation.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 package com.intellij.usageView;
  18
  19 import com.intellij.psi.ElementDescriptionLocation;
  20 import com.intellij.psi.ElementDescriptionProvider;
  21 import com.intellij.psi.PsiElement;
  22 import com.intellij.psi.PsiDirectory;
  23 import com.intellij.psi.impl.file.PsiDirectoryFactory;
  24 import org.jetbrains.annotations.Nullable;
  25 import org.jetbrains.annotations.NotNull;
  26
  27 /**
  28  * @author yole
  29  */
  30 public class UsageViewLongNameLocation extends ElementDescriptionLocation {
  31   private UsageViewLongNameLocation() {
  32   }
  33
  34   public static final UsageViewLongNameLocation INSTANCE = new UsageViewLongNameLocation();
  35
  36   public ElementDescriptionProvider getDefaultProvider() {
  37     return DEFAULT_PROVIDER;
  38   }
  39
  40   private static final ElementDescriptionProvider DEFAULT_PROVIDER = new ElementDescriptionProvider() {
  41     public String getElementDescription(@NotNull final PsiElement element, @NotNull final ElementDescriptionLocation location) {
  42       if (location instanceof UsageViewLongNameLocation) {
  43         if (element instanceof PsiDirectory) {
  44           return PsiDirectoryFactory.getInstance(element.getProject()).getQualifiedName((PsiDirectory)element, true);
  45         }
  46         return "";
  47       }
  48       return null;
  49     }
  50   };
  51 }