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1
11 package org.eclipse.jdt.internal.ui.javaeditor.selectionactions;
12
13 import org.eclipse.jdt.core.ISourceRange;
14 import org.eclipse.jdt.core.ISourceReference;
15 import org.eclipse.jdt.core.JavaModelException;
16 import org.eclipse.jdt.core.dom.ASTNode;
17
18 import org.eclipse.ui.PlatformUI;
19
20 import org.eclipse.jdt.internal.corext.dom.GenericVisitor;
21 import org.eclipse.jdt.internal.corext.dom.SelectionAnalyzer;
22
23 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
24 import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor;
25
26 public class StructureSelectNextAction extends StructureSelectionAction{
27
28 private static class NextNodeAnalyzer extends GenericVisitor {
29 private final int fOffset;
30 private ASTNode fNextNode;
31 private NextNodeAnalyzer(int offset) {
32 super(true);
33 fOffset= offset;
34 }
35 public static ASTNode perform(int offset, ASTNode lastCoveringNode) {
36 NextNodeAnalyzer analyzer= new NextNodeAnalyzer(offset);
37 lastCoveringNode.accept(analyzer);
38 return analyzer.fNextNode;
39 }
40 protected boolean visitNode(ASTNode node) {
41 int start= node.getStartPosition();
42 int end= start + node.getLength();
43 if (start == fOffset) {
44 fNextNode= node;
45 return true;
46 } else {
47 return (start < fOffset && fOffset < end);
48 }
49 }
50 }
51
52 public StructureSelectNextAction(JavaEditor editor, SelectionHistory history) {
53 super(SelectionActionMessages.StructureSelectNext_label, editor, history);
54 setToolTipText(SelectionActionMessages.StructureSelectNext_tooltip);
55 setDescription(SelectionActionMessages.StructureSelectNext_description);
56 PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.STRUCTURED_SELECT_NEXT_ACTION);
57 }
58
59
62 public StructureSelectNextAction() {
63 }
64
65
68 ISourceRange internalGetNewSelectionRange(ISourceRange oldSourceRange, ISourceReference sr, SelectionAnalyzer selAnalyzer) throws JavaModelException{
69 if (oldSourceRange.getLength() == 0 && selAnalyzer.getLastCoveringNode() != null) {
70 ASTNode previousNode= NextNodeAnalyzer.perform(oldSourceRange.getOffset(), selAnalyzer.getLastCoveringNode());
71 if (previousNode != null)
72 return getSelectedNodeSourceRange(sr, previousNode);
73 }
74 ASTNode first= selAnalyzer.getFirstSelectedNode();
75 if (first == null)
76 return getLastCoveringNodeRange(oldSourceRange, sr, selAnalyzer);
77
78 ASTNode parent= first.getParent();
79 if (parent == null)
80 return getLastCoveringNodeRange(oldSourceRange, sr, selAnalyzer);
81
82 ASTNode lastSelectedNode= selAnalyzer.getSelectedNodes()[selAnalyzer.getSelectedNodes().length - 1];
83 ASTNode nextNode= getNextNode(parent, lastSelectedNode);
84 if (nextNode == parent)
85 return getSelectedNodeSourceRange(sr, first.getParent());
86 int offset= oldSourceRange.getOffset();
87 int end= Math.min(sr.getSourceRange().getLength(), nextNode.getStartPosition() + nextNode.getLength() - 1);
88 return StructureSelectionAction.createSourceRange(offset, end);
89 }
90
91 private static ASTNode getNextNode(ASTNode parent, ASTNode node){
92 ASTNode[] siblingNodes= StructureSelectionAction.getSiblingNodes(node);
93 if (siblingNodes == null || siblingNodes.length == 0)
94 return parent;
95 if (node == siblingNodes[siblingNodes.length -1 ])
96 return parent;
97 else
98 return siblingNodes[StructureSelectionAction.findIndex(siblingNodes, node) + 1];
99 }
100 }
101
102 |
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