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1 | /******************************************************************************* |
2 | * Copyright (c) 2000, 2011 IBM Corporation and others. | |
3 | * All rights reserved. This program and the accompanying materials | |
4 | * are made available under the terms of the Eclipse Public License v1.0 | |
5 | * which accompanies this distribution, and is available at | |
6 | * http://www.eclipse.org/legal/epl-v10.html | |
7 | * | |
8 | * Contributors: | |
9 | * IBM Corporation - initial API and implementation | |
10 | *******************************************************************************/ | |
11 | /* | |
12 | * Created on Apr 13, 2004 | |
13 | * | |
14 | * TODO To change the template for this generated file go to Window - | |
15 | * Preferences - Java - Code Generation - Code and Comments | |
16 | */ | |
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.runtime.CoreException; | |
24 | import org.eclipse.core.runtime.IConfigurationElement; | |
25 | import org.eclipse.core.runtime.IStatus; | |
26 | import org.eclipse.core.runtime.Platform; | |
27 | ||
28 | import org.eclipse.core.resources.IProject; | |
29 | ||
30 | import org.eclipse.jdt.internal.ui.JavaPlugin; | |
31 | ||
32 | public class SearchParticipantsExtensionPoint { | |
33 | ||
34 | private Set<SearchParticipantDescriptor> fActiveParticipants= null; | |
35 | private static SearchParticipantsExtensionPoint fgInstance; | |
36 | ||
37 | public boolean hasAnyParticipants() { | |
38 | return Platform.getExtensionRegistry().getConfigurationElementsFor(JavaSearchPage.PARTICIPANT_EXTENSION_POINT).length > 0; | |
39 | } | |
40 | ||
41 | private synchronized Set<SearchParticipantDescriptor> getAllParticipants() { | |
42 | if (fActiveParticipants != null) | |
43 | return fActiveParticipants; | |
44 | IConfigurationElement[] allParticipants= Platform.getExtensionRegistry().getConfigurationElementsFor(JavaSearchPage.PARTICIPANT_EXTENSION_POINT); | |
45 | fActiveParticipants= new HashSet<SearchParticipantDescriptor>(allParticipants.length); | |
46 | for (int i= 0; i < allParticipants.length; i++) { | |
47 | SearchParticipantDescriptor descriptor= new SearchParticipantDescriptor(allParticipants[i]); | |
48 | IStatus status= descriptor.checkSyntax(); | |
49 | if (status.isOK()) { | |
50 | fActiveParticipants.add(descriptor); | |
51 | } else { | |
52 | JavaPlugin.log(status); | |
53 | } | |
54 | } | |
55 | return fActiveParticipants; | |
56 | } | |
57 | ||
58 | private void collectParticipants(Set<SearchParticipantRecord> participants, IProject[] projects) { | |
59 | Iterator<SearchParticipantDescriptor> activeParticipants= getAllParticipants().iterator(); | |
60 | Set<String> seenParticipants= new HashSet<String>(); | |
61 | while (activeParticipants.hasNext()) { | |
62 | SearchParticipantDescriptor participant= activeParticipants.next(); | |
63 | String id= participant.getID(); | |
64 | if (participant.isEnabled() && !seenParticipants.contains(id)) { | |
65 | for (int i= 0; i < projects.length; i++) { | |
66 | try { | |
67 | if (projects[i].hasNature(participant.getNature())) { | |
68 | participants.add(new SearchParticipantRecord(participant, participant.create())); | |
69 | seenParticipants.add(id); | |
70 | break; | |
71 | } | |
72 | } catch (CoreException e) { | |
73 | JavaPlugin.log(e.getStatus()); | |
74 | participant.disable(); | |
75 | } | |
76 | } | |
77 | } | |
78 | } | |
79 | } | |
80 | ||
81 | ||
82 | ||
83 | public SearchParticipantRecord[] getSearchParticipants(IProject[] concernedProjects) { | |
84 | Set<SearchParticipantRecord> participantSet= new HashSet<SearchParticipantRecord>(); | |
85 | collectParticipants(participantSet, concernedProjects); | |
86 | SearchParticipantRecord[] participants= new SearchParticipantRecord[participantSet.size()]; | |
87 | return participantSet.toArray(participants); | |
88 | } | |
89 | ||
90 | public static SearchParticipantsExtensionPoint getInstance() { | |
91 | if (fgInstance == null) | |
92 | fgInstance= new SearchParticipantsExtensionPoint(); | |
93 | return fgInstance; | |
94 | } | |
95 | ||
96 | public static void debugSetInstance(SearchParticipantsExtensionPoint instance) { | |
97 | fgInstance= instance; | |
98 | } | |
99 | } |