xml/impl/src/com/intellij/usageView/XmlUsageViewDescriptionProvider.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.usageView;
  17
  18 import com.intellij.codeInsight.highlighting.HighlightUsagesDescriptionLocation;
  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.PsiPresentableMetaData;
  26 import com.intellij.psi.xml.XmlAttributeValue;
  27 import com.intellij.psi.xml.XmlTag;
  28 import org.jetbrains.annotations.NotNull;
  29
  30 /**
  31  * @author yole
  32  */
  33 public class XmlUsageViewDescriptionProvider implements ElementDescriptionProvider {
  34   public String getElementDescription(@NotNull final PsiElement element, @NotNull final ElementDescriptionLocation location) {
  35     if (location instanceof UsageViewShortNameLocation) {
  36       if (element instanceof XmlAttributeValue) {
  37         return ((XmlAttributeValue)element).getValue();
  38       }
  39     }
  40
  41     if (location instanceof UsageViewLongNameLocation) {
  42       if (element instanceof XmlTag) {
  43         return ((XmlTag)element).getName();
  44       }
  45       else if (element instanceof XmlAttributeValue) {
  46         return ((XmlAttributeValue)element).getValue();
  47       }
  48     }
  49
  50     if (location instanceof HighlightUsagesDescriptionLocation) {
  51       if (element instanceof PsiPresentableMetaData) {
  52         return null;
  53       }
  54       if (element instanceof PsiFile) {
  55         return "File";
  56       }
  57
  58       final FindUsagesProvider provider = LanguageFindUsages.INSTANCE.forLanguage(element.getLanguage());
  59       return provider.getType(element);
  60     }
  61     return null;
  62   }
  63 }