public void update() {
boolean enabled = false;
ISourceReference ref = getSourceReference();
if (ref != null) {
ISourceRange range;
try {
range = ref.getSourceRange();
enabled = range != null && range.getLength() > 0;
} catch (ModelException e) {
// enabled= false;
}
}
setEnabled(enabled);
}
/*
* non java doc
*
* @see StructureSelectionAction#internalGetNewSelectionRange(ISourceRange,
* ICompilationUnit, SelectionAnalyzer)
*/
public ISourceRange internalGetNewSelectionRange(
ISourceRange oldSourceRange, ISourceReference sr, SelectionAnalyzer selAnalyzer)
throws ModelException {
if (oldSourceRange.getLength() == 0 && selAnalyzer.getLastCoveringNode() != null) {
ASTNode previousNode =
NextNodeAnalyzer.perform(oldSourceRange.getOffset(), selAnalyzer.getLastCoveringNode());
if (previousNode != null) return getSelectedNodeSourceRange(sr, previousNode);
}
org.eclipse.php.internal.core.ast.nodes.ASTNode first = selAnalyzer.getFirstSelectedNode();
if (first == null) return getLastCoveringNodeRange(oldSourceRange, sr, selAnalyzer);
org.eclipse.php.internal.core.ast.nodes.ASTNode parent = first.getParent();
if (parent == null) return getLastCoveringNodeRange(oldSourceRange, sr, selAnalyzer);
org.eclipse.php.internal.core.ast.nodes.ASTNode lastSelectedNode =
selAnalyzer.getSelectedNodes()[selAnalyzer.getSelectedNodes().length - 1];
org.eclipse.php.internal.core.ast.nodes.ASTNode nextNode =
getNextNode(parent, lastSelectedNode);
if (nextNode == parent) return getSelectedNodeSourceRange(sr, first.getParent());
int offset = oldSourceRange.getOffset();
int end = Math.min(sr.getSourceRange().getLength(), nextNode.getEnd() - 1);
return createSourceRange(offset, end);
}