public Object createWidget(final MUIElement element, Object parent) {
if (!(element instanceof MPart) || !(parent instanceof Composite)) return null;
Widget parentWidget = (Widget) parent;
Widget newWidget = null;
final MPart part = (MPart) element;
final Composite newComposite =
new Composite((Composite) parentWidget, SWT.NONE) {
/**
* Field to determine whether we are currently in the midst of granting focus to the part.
*/
private boolean beingFocused = false;
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Composite#setFocus()
*/
@Override
public boolean setFocus() {
if (!beingFocused) {
try {
// we are currently asking the part to take focus
beingFocused = true;
// delegate an attempt to set the focus here to the
// part's implementation (if there is one)
Object object = part.getObject();
if (object != null) {
IPresentationEngine pe = part.getContext().get(IPresentationEngine.class);
pe.focusGui(part);
return true;
}
return super.setFocus();
} finally {
// we are done, unset our flag
beingFocused = false;
}
}
if (logger != null) {
String id = part.getElementId();
if (id == null) {
logger.warn(
new IllegalStateException(),
"Blocked recursive attempt to activate part " //$NON-NLS-1$
+ id);
} else {
logger.warn(
new IllegalStateException(),
"Blocked recursive attempt to activate part"); //$NON-NLS-1$
}
}
// already being focused, likely some strange recursive call,
// just return
return true;
}
};
newComposite.setLayout(new FillLayout(SWT.VERTICAL));
newWidget = newComposite;
bindWidget(element, newWidget);
// Create a context for this part
IEclipseContext localContext = part.getContext();
localContext.set(Composite.class.getName(), newComposite);
IContributionFactory contributionFactory =
(IContributionFactory) localContext.get(IContributionFactory.class.getName());
Object newPart = contributionFactory.create(part.getContributionURI(), localContext);
part.setObject(newPart);
return newWidget;
}
