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1
11 package org.eclipse.pde.internal.ui.editor.text;
12
13
14 import org.eclipse.jface.text.IInformationControlCreator;
15 import org.eclipse.jface.text.IRegion;
16 import org.eclipse.jface.text.ITextHover;
17 import org.eclipse.jface.text.ITextViewer;
18 import org.eclipse.jface.text.information.IInformationProvider;
19 import org.eclipse.jface.text.information.IInformationProviderExtension2;
20 import org.eclipse.pde.internal.ui.editor.PDESourcePage;
21 import org.eclipse.ui.IPartListener;
22 import org.eclipse.ui.IPerspectiveDescriptor;
23 import org.eclipse.ui.IWorkbenchPage;
24 import org.eclipse.ui.IWorkbenchPart;
25
26
27 public class SourceInformationProvider implements IInformationProvider, IInformationProviderExtension2, IPartListener {
28
29 public static final int F_NO_IMP = 0;
30 public static final int F_XML_IMP = 1;
31 public static final int F_MANIFEST_IMP = 2;
32
33 protected PDESourcePage fSourcePage;
34 protected String  fCurrentPerspective;
35 protected ITextHover fImplementation;
36 protected int fImpType;
37
38 public void partOpened(IWorkbenchPart part) {
39 }
40
41 public void partDeactivated(IWorkbenchPart part) {
42 }
43
44 public void partClosed(IWorkbenchPart part) {
45 if (fSourcePage != null && part == fSourcePage.getEditor() && fImpType != F_NO_IMP)
46 fSourcePage.getSite().getWorkbenchWindow().getPartService().removePartListener(this);
47 }
48
49 public void partActivated(IWorkbenchPart part) {
50 update();
51 }
52
53 public void partBroughtToTop(IWorkbenchPart part) {
54 update();
55 }
56
57
58 private IInformationControlCreator fPresenterControlCreator;
59
60 public SourceInformationProvider(PDESourcePage editor, IInformationControlCreator creator, int impType) {
61 fSourcePage = editor;
62 fPresenterControlCreator = creator;
63 fImpType = impType;
64 if (fSourcePage != null && fImpType != F_NO_IMP) {
65 fSourcePage.getSite().getWorkbenchWindow().getPartService().addPartListener(this);
66 update();
67 }
68 }
69
70 protected void update() {
71 IWorkbenchPage page = fSourcePage.getSite().getWorkbenchWindow().getActivePage();
72 if (page != null) {
73 IPerspectiveDescriptor perspective = page.getPerspective();
74 if (perspective != null) {
75 String perspectiveId = perspective.getId();
76 if (fCurrentPerspective == null || fCurrentPerspective != perspectiveId) {
77 fCurrentPerspective = perspectiveId;
78 switch (fImpType) {
79 case F_MANIFEST_IMP:
80 fImplementation = new ManifestTextHover(fSourcePage);
81 break;
82 case F_XML_IMP:
83 fImplementation = new PluginXMLTextHover(fSourcePage);
84 break;
85 }
86 }
87 }
88 }
89 }
90
91 public IRegion getSubject(ITextViewer textViewer, int offset) {
92 if (textViewer != null)
93 return PDEWordFinder.findWord(textViewer.getDocument(), offset);
94 return null;
95 }
96
97 public String getInformation(ITextViewer textViewer, IRegion subject) {
98 if (fImplementation != null) {
99 String s = fImplementation.getHoverInfo(textViewer, subject);
100 if (s != null && s.trim().length() > 0)
101 return s;
102 }
103 return null;
104 }
105
106 public IInformationControlCreator getInformationPresenterControlCreator() {
107 return fPresenterControlCreator;
108 }
109
110 }
111 |
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