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1 package freemarker.eclipse.outline;
2
3 import java.util.Collections  ;
4 import java.util.Comparator ;
5 import java.util.Enumeration ;
6 import java.util.Iterator ;
7 import java.util.Map ;
8 import java.util.Vector ;
9
10 import org.eclipse.jface.text.BadPositionCategoryException;
11 import org.eclipse.jface.text.DefaultPositionUpdater;
12 import org.eclipse.jface.text.IDocument;
13 import org.eclipse.jface.text.IPositionUpdater;
14 import org.eclipse.jface.text.reconciler.IReconcilingStrategy;
15 import org.eclipse.jface.viewers.ITreeContentProvider;
16 import org.eclipse.jface.viewers.Viewer;
17
18 import freemarker.core.Macro;
19 import freemarker.eclipse.editors.FreemarkerEditor;
20 import freemarker.eclipse.editors.ReconcilingStrategy;
21 import freemarker.template.Template;
22
23
27 public class OutlineContentProvider implements ITreeContentProvider {
28
29 public static final Comparator COMPARATOR = new Comparator () {
30 public int compare(Object arg0, Object arg1) {
31 return (arg0.toString().compareTo(
32 arg1.toString()));
33 }
34 };
35 public static final String FREEMARKER_TEMPLATE = "__ftl_template";
36
37 private FreemarkerEditor fEditor;
38 private IReconcilingStrategy fReconcilingStrategy;
39 private IPositionUpdater fPositionUpdater;
40
41 public OutlineContentProvider(FreemarkerEditor anEditor) {
42 fEditor = anEditor;
43 fPositionUpdater = new DefaultPositionUpdater(FREEMARKER_TEMPLATE);
44 fReconcilingStrategy = new ReconcilingStrategy(fEditor);
45 }
46
47 public void inputChanged(
48 Viewer aViewer,
49 Object anOldInput,
50 Object aNewInput) {
51 if (anOldInput != aNewInput) {
52 if (anOldInput != null) {
53 IDocument document =
54 fEditor.getDocumentProvider().getDocument(anOldInput);
55 if (document != null) {
56 try {
57 document.removePositionCategory(FREEMARKER_TEMPLATE);
58 } catch (BadPositionCategoryException e) {
59 }
60 document.removePositionUpdater(fPositionUpdater);
61 }
62 }
63
64 if (aNewInput != null) {
65 IDocument document =
66 fEditor.getDocumentProvider().getDocument(aNewInput);
67 if (document != null) {
68 document.addPositionCategory(FREEMARKER_TEMPLATE);
69 document.addPositionUpdater(fPositionUpdater);
70 }
71 }
72 }
73 }
74
75 public boolean isDeleted(Object anElement) {
76 return false;
77 }
78
79 public void dispose() {
80 }
81
82 public Object [] getElements(Object inputElement) {
83 Template t = fEditor.getReconcilingStrategy().getTemplate();
84 if (null == t) {
85 return new Object [0];
86 } else {
87 Vector temp = new Vector ();
88
89 Map macros = t.getMacros();
90 Iterator iter = macros.keySet().iterator();
91 Object key = null;
92 Macro m = null;
93 while (iter.hasNext()) {
94 key = iter.next();
95 m = (Macro) macros.get(key);
96 temp.add(new MacroNode(m));
97 }
98 Collections.sort(temp,OutlineContentProvider.COMPARATOR);
99 temp.add(0,new ImportCollectionNode(t));
100
101 return temp.toArray();
102 }
103 }
104
105 public Object [] getChildren(Object anElement) {
106 Enumeration e;
107 return (anElement instanceof ImportCollectionNode)
108 ? ((ImportCollectionNode) anElement).getChildren()
109 : new Object [0];
110 }
111
112 public Object getParent(Object anElement) {
113 return (anElement instanceof ImportNode)
114 ? ((ImportNode) anElement).getParent()
115 : null;
116 }
117
118 public boolean hasChildren(Object anElement) {
119 return (anElement instanceof ImportCollectionNode)
120 ? ((ImportCollectionNode) anElement).hasChildren()
121 : false;
122 }
123
124 }
125 |
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