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1
4 package org.terracotta.dso;
5
6 import org.eclipse.jdt.core.dom.ASTNode;
7 import org.eclipse.jdt.ui.text.java.IInvocationContext;
8 import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal;
9 import org.eclipse.jdt.ui.text.java.IProblemLocation;
10 import org.eclipse.jface.text.IDocument;
11 import org.eclipse.jface.text.contentassist.IContextInformation;
12 import org.eclipse.swt.graphics.Image;
13 import org.eclipse.swt.graphics.Point;
14
15 public class QuickAssistProcessor implements org.eclipse.jdt.ui.text.java.IQuickAssistProcessor {
16 public IJavaCompletionProposal[] getAssists(IInvocationContext context, IProblemLocation[] locations) {
17 IJavaCompletionProposal[] result = null;
18
19 if(hasAssists(context)) {
20 result = new IJavaCompletionProposal[] {new DeclaredRootProposal(context)};
21 }
22
23 return result;
24 }
25
26 private ASTNode getAncestor(ASTNode node, int type) {
27 ASTNode parent;
28
29 while((parent = node.getParent()) != null) {
30 if(parent.getNodeType() == type) {
31 return parent;
32 }
33 node = parent;
34 }
35
36 return null;
37 }
38
39 public boolean hasAssists(IInvocationContext context) {
40 ASTNode covered = context.getCoveredNode();
41 ASTNode covering = context.getCoveringNode();
42
43 if(covered == null) covered = covering;
44
45 if(covered != null && covered.getNodeType() == ASTNode.SIMPLE_NAME) {
46 return getAncestor(covered, ASTNode.FIELD_DECLARATION) != null;
47 }
48
49 return false;
50 }
51 }
52
53 class DeclaredRootProposal implements IJavaCompletionProposal {
54 IInvocationContext m_context;
55
56 DeclaredRootProposal(IInvocationContext context) {
57 m_context = context;
58 }
59
60 public int getRelevance() {
61 return 100;
62 }
63
64 public void apply(IDocument document) {
65 System.out.println(document);
66 }
67
68 public String  getAdditionalProposalInfo() {
69 return null;
70 }
71
72 public IContextInformation getContextInformation() {
73 return null;
74 }
75
76 public String getDisplayString() {
77 return "Make a root";
78 }
79
80 public Image getImage() {
81 return null;
82 }
83
84 public Point getSelection(IDocument document) {
85 return null;
86 }
87 }
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Java API By Example, From Geeks To Geeks.