platform/lang-impl/src/com/intellij/usageView/UsageViewNodeTextLocation.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.lang.findUsages.FindUsagesProvider;
  20 import com.intellij.lang.findUsages.LanguageFindUsages;
  21 import com.intellij.psi.ElementDescriptionLocation;
  22 import com.intellij.psi.ElementDescriptionProvider;
  23 import com.intellij.psi.PsiElement;
  24 import com.intellij.psi.PsiFile;
  25 import com.intellij.psi.meta.PsiMetaData;
  26 import com.intellij.psi.meta.PsiMetaOwner;
  27 import com.intellij.psi.meta.PsiPresentableMetaData;
  28 import org.jetbrains.annotations.NotNull;
  29
  30 /**
  31  * @author peter
  32  */
  33 public class UsageViewNodeTextLocation extends ElementDescriptionLocation {
  34   private UsageViewNodeTextLocation() {
  35   }
  36
  37   public static final UsageViewNodeTextLocation INSTANCE = new UsageViewNodeTextLocation();
  38
  39   public ElementDescriptionProvider getDefaultProvider() {
  40     return DEFAULT_PROVIDER;
  41   }
  42
  43   private static final ElementDescriptionProvider DEFAULT_PROVIDER = new ElementDescriptionProvider() {
  44     public String getElementDescription(@NotNull final PsiElement element, @NotNull final ElementDescriptionLocation location) {
  45       if (!(location instanceof UsageViewNodeTextLocation)) return null;
  46
  47       if (element instanceof PsiMetaOwner) {
  48         final PsiMetaData metaData = ((PsiMetaOwner)element).getMetaData();
  49         if (metaData instanceof PsiPresentableMetaData) {
  50           return ((PsiPresentableMetaData)metaData).getTypeName() + " " + UsageViewUtil.getMetaDataName(metaData);
  51         }
  52       }
  53
  54       if (element instanceof PsiFile) {
  55         return ((PsiFile) element).getName();
  56       }
  57       FindUsagesProvider provider = LanguageFindUsages.INSTANCE.forLanguage(element.getLanguage());
  58       return provider.getNodeText(element, true);
  59     }
  60   };
  61 }