|
1
11
17 package org.eclipse.jdt.internal.ui.search;
18
19 import java.util.HashSet  ;
20 import java.util.Iterator ;
21 import java.util.Set ;
22
23 import org.eclipse.core.resources.IProject;
24 import org.eclipse.core.runtime.CoreException;
25 import org.eclipse.core.runtime.IConfigurationElement;
26 import org.eclipse.core.runtime.IStatus;
27 import org.eclipse.core.runtime.Platform;
28 import org.eclipse.jdt.internal.ui.JavaPlugin;
29
30 public class SearchParticipantsExtensionPoint {
31
32 private Set fActiveParticipants= null;
33 private static SearchParticipantsExtensionPoint fgInstance;
34
35 public boolean hasAnyParticipants() {
36 return Platform.getExtensionRegistry().getConfigurationElementsFor(JavaSearchPage.PARTICIPANT_EXTENSION_POINT).length > 0;
37 }
38
39 private synchronized Set getAllParticipants() {
40 if (fActiveParticipants != null)
41 return fActiveParticipants;
42 IConfigurationElement[] allParticipants= Platform.getExtensionRegistry().getConfigurationElementsFor(JavaSearchPage.PARTICIPANT_EXTENSION_POINT);
43 fActiveParticipants= new HashSet (allParticipants.length);
44 for (int i= 0; i < allParticipants.length; i++) {
45 SearchParticipantDescriptor descriptor= new SearchParticipantDescriptor(allParticipants[i]);
46 IStatus status= descriptor.checkSyntax();
47 if (status.isOK()) {
48 fActiveParticipants.add(descriptor);
49 } else {
50 JavaPlugin.log(status);
51 }
52 }
53 return fActiveParticipants;
54 }
55
56 private void collectParticipants(Set participants, IProject[] projects) {
57 Iterator activeParticipants= getAllParticipants().iterator();
58 Set seenParticipants= new HashSet ();
59 while (activeParticipants.hasNext()) {
60 SearchParticipantDescriptor participant= (SearchParticipantDescriptor) activeParticipants.next();
61 if (participant.isEnabled()) {
62 String id= participant.getID();
63 for (int i= 0; i < projects.length; i++) {
64 if (seenParticipants.contains(id))
65 continue;
66 try {
67 if (projects[i].hasNature(participant.getNature())) {
68 participants.add(new SearchParticipantRecord(participant, participant.create()));
69 seenParticipants.add(id);
70 }
71 } catch (CoreException e) {
72 JavaPlugin.log(e.getStatus());
73 participant.disable();
74 }
75 }
76 }
77 }
78 }
79
80
81
82 public SearchParticipantRecord[] getSearchParticipants(IProject[] concernedProjects) throws CoreException {
83 Set participantSet= new HashSet ();
84 collectParticipants(participantSet, concernedProjects);
85 SearchParticipantRecord[] participants= new SearchParticipantRecord[participantSet.size()];
86 return (SearchParticipantRecord[]) participantSet.toArray(participants);
87 }
88
89 public static SearchParticipantsExtensionPoint getInstance() {
90 if (fgInstance == null)
91 fgInstance= new SearchParticipantsExtensionPoint();
92 return fgInstance;
93 }
94
95 public static void debugSetInstance(SearchParticipantsExtensionPoint instance) {
96 fgInstance= instance;
97 }
98 }
99 |
Popular Tags |
Java API By Example, From Geeks To Geeks.