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1
11 package org.eclipse.jdt.internal.ui.text.java;
12
13 import java.util.ArrayList  ;
14 import java.util.Arrays ;
15 import java.util.Collections ;
16 import java.util.HashSet ;
17 import java.util.List ;
18 import java.util.Set ;
19
20 import org.eclipse.core.runtime.IProgressMonitor;
21
22
23 import org.eclipse.jface.text.BadLocationException;
24 import org.eclipse.jface.text.TextUtilities;
25 import org.eclipse.jface.text.templates.TemplateContextType;
26
27 import org.eclipse.jdt.core.ICompilationUnit;
28
29 import org.eclipse.jdt.internal.corext.template.java.JavaContextType;
30 import org.eclipse.jdt.internal.corext.template.java.JavaDocContextType;
31
32 import org.eclipse.jdt.ui.text.IJavaPartitions;
33 import org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer;
34 import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal;
35 import org.eclipse.jdt.ui.text.java.JavaContentAssistInvocationContext;
36 import org.eclipse.jdt.ui.text.java.ContentAssistInvocationContext;
37
38 import org.eclipse.jdt.internal.ui.JavaPlugin;
39 import org.eclipse.jdt.internal.ui.text.template.contentassist.TemplateEngine;
40 import org.eclipse.jdt.internal.ui.text.template.contentassist.TemplateProposal;
41
42
46 public final class TemplateCompletionProposalComputer implements IJavaCompletionProposalComputer {
47
48 private final TemplateEngine fJavaTemplateEngine;
49 private final TemplateEngine fJavadocTemplateEngine;
50
51 public TemplateCompletionProposalComputer() {
52 TemplateContextType contextType= JavaPlugin.getDefault().getTemplateContextRegistry().getContextType(JavaContextType.NAME);
53 if (contextType == null) {
54 contextType= new JavaContextType();
55 JavaPlugin.getDefault().getTemplateContextRegistry().addContextType(contextType);
56 }
57 if (contextType != null)
58 fJavaTemplateEngine= new TemplateEngine(contextType);
59 else
60 fJavaTemplateEngine= null;
61 contextType= JavaPlugin.getDefault().getTemplateContextRegistry().getContextType("javadoc"); if (contextType == null) {
63 contextType= new JavaDocContextType();
64 JavaPlugin.getDefault().getTemplateContextRegistry().addContextType(contextType);
65 }
66 if (contextType != null)
67 fJavadocTemplateEngine= new TemplateEngine(contextType);
68 else
69 fJavadocTemplateEngine= null;
70 }
71
72
75 public List computeCompletionProposals(ContentAssistInvocationContext context, IProgressMonitor monitor) {
76 TemplateEngine engine;
77 try {
78 String partition= TextUtilities.getContentType(context.getDocument(), IJavaPartitions.JAVA_PARTITIONING, context.getInvocationOffset(), true);
79 if (partition.equals(IJavaPartitions.JAVA_DOC))
80 engine= fJavadocTemplateEngine;
81 else
82 engine= fJavaTemplateEngine;
83 } catch (BadLocationException x) {
84 return Collections.EMPTY_LIST;
85 }
86
87 if (engine != null) {
88 if (!(context instanceof JavaContentAssistInvocationContext))
89 return Collections.EMPTY_LIST;
90
91 JavaContentAssistInvocationContext javaContext= (JavaContentAssistInvocationContext) context;
92 ICompilationUnit unit= javaContext.getCompilationUnit();
93 if (unit == null)
94 return Collections.EMPTY_LIST;
95
96 engine.reset();
97 engine.complete(javaContext.getViewer(), javaContext.getInvocationOffset(), unit);
98
99 TemplateProposal[] templateProposals= engine.getResults();
100 List result= new ArrayList (Arrays.asList(templateProposals));
101
102 IJavaCompletionProposal[] keyWordResults= javaContext.getKeywordProposals();
103 if (keyWordResults.length > 0) {
104 List removals= new ArrayList ();
105
106 if (keyWordResults.length > 0) {
112 outer: for (int k= 0; k < templateProposals.length; k++) {
113 TemplateProposal curr= templateProposals[k];
114 String name= curr.getTemplate().getName();
115 for (int i= 0; i < keyWordResults.length; i++) {
116 String keyword= keyWordResults[i].getDisplayString();
117 if (name.startsWith(keyword)) {
118 curr.setRelevance(keyWordResults[i].getRelevance() + 1);
119 continue outer;
120 }
121 }
122 if (isKeyword(name))
123 removals.add(curr);
124 }
125 }
126
127 result.removeAll(removals);
128 }
129 return result;
130 }
131
132 return Collections.EMPTY_LIST;
133 }
134
135
138 public List computeContextInformation(ContentAssistInvocationContext context, IProgressMonitor monitor) {
139 return Collections.EMPTY_LIST;
140 }
141
142 private static final Set KEYWORDS;
143 static {
144 Set keywords= new HashSet (42);
145 keywords.add("abstract"); keywords.add("assert"); keywords.add("break"); keywords.add("case"); keywords.add("catch"); keywords.add("class"); keywords.add("continue"); keywords.add("default"); keywords.add("do"); keywords.add("else"); keywords.add("elseif"); keywords.add("extends"); keywords.add("final"); keywords.add("finally"); keywords.add("for"); keywords.add("if"); keywords.add("implements"); keywords.add("import"); keywords.add("instanceof"); keywords.add("interface"); keywords.add("native"); keywords.add("new"); keywords.add("package"); keywords.add("private"); keywords.add("protected"); keywords.add("public"); keywords.add("return"); keywords.add("static"); keywords.add("strictfp"); keywords.add("super"); keywords.add("switch"); keywords.add("synchronized"); keywords.add("this"); keywords.add("throw"); keywords.add("throws"); keywords.add("transient"); keywords.add("try"); keywords.add("volatile"); keywords.add("while"); keywords.add("true"); keywords.add("false"); keywords.add("null"); KEYWORDS= Collections.unmodifiableSet(keywords);
188 }
189
190 private boolean isKeyword(String name) {
191 return KEYWORDS.contains(name);
192 }
193
194
197 public String getErrorMessage() {
198 return null;
199 }
200
201
204 public void sessionStarted() {
205 }
206
207
210 public void sessionEnded() {
211 fJavadocTemplateEngine.reset();
212 fJavaTemplateEngine.reset();
213 }
214 }
215 |
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