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1
11 package org.eclipse.jdt.internal.ui.refactoring.contentassist;
12
13 import java.util.ArrayList  ;
14 import java.util.Arrays ;
15 import java.util.List ;
16
17 import org.eclipse.core.runtime.Assert;
18
19 import org.eclipse.core.resources.ResourcesPlugin;
20
21 import org.eclipse.swt.graphics.Image;
22
23 import org.eclipse.jface.contentassist.IContentAssistSubjectControl;
24 import org.eclipse.jface.contentassist.ISubjectControlContentAssistProcessor;
25 import org.eclipse.jface.preference.IPreferenceStore;
26
27 import org.eclipse.jface.text.ITextViewer;
28 import org.eclipse.jface.text.contentassist.ICompletionProposal;
29 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
30 import org.eclipse.jface.text.contentassist.IContextInformation;
31 import org.eclipse.jface.text.contentassist.IContextInformationValidator;
32
33 import org.eclipse.jdt.core.IJavaModel;
34 import org.eclipse.jdt.core.IJavaProject;
35 import org.eclipse.jdt.core.IPackageFragmentRoot;
36 import org.eclipse.jdt.core.JavaCore;
37 import org.eclipse.jdt.core.JavaModelException;
38
39
40 import org.eclipse.jdt.ui.JavaElementLabelProvider;
41 import org.eclipse.jdt.ui.PreferenceConstants;
42 import org.eclipse.jdt.ui.text.java.CompletionProposalComparator;
43
44 import org.eclipse.jdt.internal.ui.JavaPlugin;
45 import org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposal;
46
47
51 public class JavaSourcePackageFragmentRootCompletionProcessor implements IContentAssistProcessor, ISubjectControlContentAssistProcessor {
52
53 private char[] fProposalAutoActivationSet;
54 private IJavaModel fRoot;
55 private CompletionProposalComparator fComparator;
56 private JavaElementLabelProvider fLabelProvider;
57
58 public JavaSourcePackageFragmentRootCompletionProcessor() {
59 fRoot= JavaCore.create(ResourcesPlugin.getWorkspace().getRoot());
60 IPreferenceStore preferenceStore= JavaPlugin.getDefault().getPreferenceStore();
61 String triggers= preferenceStore.getString(PreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVA);
62 fProposalAutoActivationSet= triggers.toCharArray();
63 fComparator= new CompletionProposalComparator();
64 fLabelProvider= new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_SMALL_ICONS);
65 }
66
67 public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int documentOffset) {
68 Assert.isTrue(false, "ITextViewer not supported"); return null;
70 }
71
72 public IContextInformation[] computeContextInformation(ITextViewer viewer, int documentOffset) {
73 Assert.isTrue(false, "ITextViewer not supported"); return null;
75 }
76
77 public char[] getCompletionProposalAutoActivationCharacters() {
78 return fProposalAutoActivationSet;
79 }
80
81 public char[] getContextInformationAutoActivationCharacters() {
82 return null;
83 }
84
85 public String getErrorMessage() {
86 return null;
87 }
88
89 public IContextInformationValidator getContextInformationValidator() {
90 return null;
91 }
92
93 public ICompletionProposal[] computeCompletionProposals(IContentAssistSubjectControl contentAssistSubject, int documentOffset) {
94 if (fRoot == null) {
95 return null;
96 }
97
98 String input= contentAssistSubject.getDocument().get();
99 String prefix= input.substring(0, documentOffset);
100
101 ICompletionProposal[] proposals= createSourcePackageFragmentRootProposals(prefix, input.length());
102 Arrays.sort(proposals, fComparator);
103 return proposals;
104 }
105
106
111 private ICompletionProposal[] createSourcePackageFragmentRootProposals(String prefix, int replacementLength) {
112 List proposals= new ArrayList ();
113 try {
114 IJavaProject[] projects= fRoot.getJavaProjects();
115 for (int i= 0; i < projects.length; i++) {
116 IJavaProject project= projects[i];
117 IPackageFragmentRoot[] roots= project.getPackageFragmentRoots();
118 for (int j= 0; j < roots.length; j++) {
119 IPackageFragmentRoot root= roots[j];
120 if (root.exists() && (root.getKind() == IPackageFragmentRoot.K_SOURCE)) {
121 String name= root.getPath().toString();
122 if (name.length() > 1) {
123 name= name.substring(1);
124 }
125 if (name.startsWith(prefix)) {
126 Image image= fLabelProvider.getImage(root);
127 JavaCompletionProposal proposal= new JavaCompletionProposal(name, 0, replacementLength, image,
128 name, 0);
129 proposals.add(proposal);
130 }
131 }
132 }
133 }
134 } catch (JavaModelException e) {
135 }
137
138 return (ICompletionProposal[])proposals.toArray(new ICompletionProposal[proposals.size()]);
139 }
140
141 public IContextInformation[] computeContextInformation(IContentAssistSubjectControl contentAssistSubject, int documentOffset) {
142 return null;
143 }
144
145 }
146 |
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