/*
* @see StructuredViewer#handleInvalidSelection(ISelection, ISelection)
*/
protected void handleInvalidSelection(ISelection invalidSelection, ISelection newSelection) {
// on change of input, try to keep selected methods stable by selecting a method with the same
// signature: See #5466
List oldSelections = SelectionUtil.toList(invalidSelection);
List newSelections = SelectionUtil.toList(newSelection);
if (!oldSelections.isEmpty()) {
ArrayList newSelectionElements = new ArrayList(newSelections);
try {
Object[] currElements = getFilteredChildren(getInput());
for (int i = 0; i < oldSelections.size(); i++) {
Object curr = oldSelections.get(i);
if (curr instanceof IMethod && !newSelections.contains(curr)) {
IMethod method = (IMethod) curr;
if (method.exists()) {
IMethod similar = findSimilarMethod(method, currElements);
if (similar != null) {
newSelectionElements.add(similar);
}
}
}
}
if (!newSelectionElements.isEmpty()) {
newSelection = new StructuredSelection(newSelectionElements);
} else if (currElements.length > 0) {
newSelection = new StructuredSelection(currElements[0]);
}
} catch (ModelException e) {
DLTKUIPlugin.log(e);
}
}
setSelection(newSelection);
updateSelection(newSelection);
}
/**
* Finds and returns the Script element selected in the given part.
*
* @param part the workbench part for which to find the selected Script element
* @param selection the selection
* @return the selected Script element
*/
protected Object findSelectedModelElement(IWorkbenchPart part, ISelection selection) {
try {
if (isValidWorkbenchPart(part) && selection instanceof ITextSelection) {
final IEditorPart editor = (IEditorPart) part;
IModelElement[] elements =
TextSelectionConverter.codeResolve(editor, (ITextSelection) selection);
if (elements != null && elements.length > 0) {
return elements.length == 1 ? elements[0] : (Object) new ModelElementArray(elements);
}
} else if (selection instanceof IStructuredSelection) {
Object element = SelectionUtil.getSingleElement(selection);
return findModelElement(element);
}
} catch (ModelException e) {
DLTKUIPlugin.log(e);
}
return null;
}