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1
11 package org.eclipse.search.internal.ui.text;
12
13 import org.eclipse.core.resources.IFile;
14
15 import org.eclipse.ui.IEditorDescriptor;
16 import org.eclipse.ui.IEditorInput;
17 import org.eclipse.ui.IEditorPart;
18 import org.eclipse.ui.IEditorReference;
19 import org.eclipse.ui.IEditorRegistry;
20 import org.eclipse.ui.IReusableEditor;
21 import org.eclipse.ui.IViewReference;
22 import org.eclipse.ui.IWorkbenchPage;
23 import org.eclipse.ui.IWorkbenchPartReference;
24 import org.eclipse.ui.PartInitException;
25 import org.eclipse.ui.ide.IDE;
26 import org.eclipse.ui.part.FileEditorInput;
27
28 import org.eclipse.search.ui.NewSearchUI;
29
30 import org.eclipse.search.internal.ui.SearchPlugin;
31
32 public class EditorOpener {
33
34 private IEditorReference fReusedEditor;
35
36 public IEditorPart open(IFile file, boolean activate) throws PartInitException {
37 IWorkbenchPage wbPage= SearchPlugin.getActivePage();
38 if (NewSearchUI.reuseEditor())
39 return showWithReuse(file, wbPage, activate);
40 return showWithoutReuse(file, wbPage, activate);
41 }
42
43 private IEditorPart showWithoutReuse(IFile file, IWorkbenchPage wbPage, boolean activate) throws PartInitException {
44 return IDE.openEditor(wbPage, file, activate);
45 }
46
47 private IEditorPart showWithReuse(IFile file, IWorkbenchPage wbPage, boolean activate) throws PartInitException {
48 String  editorID= getEditorID(file);
49 return showInEditor(wbPage, file, editorID, activate);
50 }
51
52
53 private String getEditorID(IFile file) throws PartInitException {
54 IEditorDescriptor desc= IDE.getEditorDescriptor(file);
55 if (desc == null)
56 return SearchPlugin.getDefault().getWorkbench().getEditorRegistry().findEditor(IEditorRegistry.SYSTEM_EXTERNAL_EDITOR_ID).getId();
57 return desc.getId();
58 }
59
60 private IEditorPart showInEditor(IWorkbenchPage page, IFile file, String editorId, boolean activate) throws PartInitException {
61 IEditorInput input= new FileEditorInput(file);
62 IEditorPart editor= page.findEditor(input);
63 if (editor != null) {
64 page.bringToTop(editor);
65 if (activate) {
66 page.activate(editor);
67 }
68 return editor;
69 }
70 IEditorReference reusedEditorRef= fReusedEditor;
71 if (reusedEditorRef != null) {
72 boolean isOpen= reusedEditorRef.getEditor(false) != null;
73 boolean canBeReused= isOpen && !reusedEditorRef.isDirty() && !reusedEditorRef.isPinned();
74 if (canBeReused) {
75 boolean showsSameInputType= reusedEditorRef.getId().equals(editorId);
76 if (!showsSameInputType) {
77 if (isOkToClose(page)) page.closeEditors(new IEditorReference[] { reusedEditorRef }, false);
79 fReusedEditor= null;
80 } else {
81 editor= reusedEditorRef.getEditor(true);
82 if (editor instanceof IReusableEditor) {
83 ((IReusableEditor) editor).setInput(input);
84 page.bringToTop(editor);
85 if (activate) {
86 page.activate(editor);
87 }
88 return editor;
89 }
90 }
91 }
92 }
93 editor= page.openEditor(input, editorId, activate);
94 if (editor instanceof IReusableEditor) {
95 IEditorReference reference= (IEditorReference) page.getReference(editor);
96 fReusedEditor= reference;
97 } else {
98 fReusedEditor= null;
99 }
100 return editor;
101 }
102
103 private boolean isOkToClose(IWorkbenchPage page) {
104 IWorkbenchPartReference searchViewRef= page.getActivePartReference();
105 return searchViewRef == null ||
106 !NewSearchUI.SEARCH_VIEW_ID.equals(searchViewRef.getId()) ||
107 !((IViewReference) searchViewRef).isFastView();
108 }
109
110 }
111 |
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