1    /* 
2     * Copyright 2000-2005 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.lang.javascript.findUsages; 
17    
18   import com.intellij.lang.cacheBuilder.WordsScanner; 
19   import com.intellij.lang.findUsages.FindUsagesProvider; 
20   import com.intellij.lang.javascript.JSElementTypes; 
21   import com.intellij.lang.javascript.JSTokenTypes; 
22   import com.intellij.lang.javascript.JSWordsScanner; 
23   import com.intellij.lang.javascript.psi.JSFunction; 
24   import com.intellij.lang.javascript.psi.JSParameter; 
25   import com.intellij.lang.javascript.psi.JSProperty; 
26   import com.intellij.lang.javascript.psi.JSVariable; 
27   import com.intellij.psi.PsiElement; 
28   import com.intellij.psi.PsiNamedElement; 
29   import com.intellij.psi.search.UsageSearchContext; 
30   import com.intellij.psi.tree.IElementType; 
31    
32   /** 
33    * Created by IntelliJ IDEA. 
34    * User: max 
35    * Date: Feb 14, 2005 
36    * Time: 6:44:02 PM 
37    * To change this template use File | Settings | File Templates. 
38    */ 
39   public class JavaScriptFindUsagesProvider implements FindUsagesProvider { 
40     public boolean canFindUsagesFor(PsiElement psiElement) { 
41       return psiElement instanceof PsiNamedElement; 
42     } 
43    
44     public String getHelpId(PsiElement psiElement) { 
45       return null; 
46     } 
47    
48     public String getType(PsiElement element) { 
49       if (element instanceof JSFunction) return "function"; 
50       if (element instanceof JSParameter) return "parameter"; 
51       if (element instanceof JSProperty) return "property"; 
52       if (element instanceof JSVariable) return "variable"; 
53       return ""; 
54     } 
55    
56     public String getDescriptiveName(PsiElement element) { 
57       return ((PsiNamedElement)element).getName(); 
58     } 
59    
60     public String getNodeText(PsiElement element, boolean useFullName) { 
61       return getDescriptiveName(element); 
62     } 
63    
64     public boolean mayHaveReferences(IElementType token, final short searchContext) { 
65       if ((searchContext & UsageSearchContext.IN_CODE) != 0 && token == JSElementTypes.REFERENCE_EXPRESSION) return true; 
66       if ((searchContext & UsageSearchContext.IN_COMMENTS) != 0 && JSTokenTypes.COMMENTS.isInSet(token)) return true; 
67       if ((searchContext & UsageSearchContext.IN_STRINGS) != 0 && token == JSTokenTypes.STRING_LITERAL) return true; 
68       return false; 
69     } 
70    
71     public WordsScanner getWordsScanner() { 
72       return new JSWordsScanner();  
73     } 
74   } 
75