Bug 42767 Grabbing vertically on add constructor/ gen contructors using fields action
The source actions related to creating constructors is not relayouting properly on resize. The lowermost checkbox is grabbing vertically when it shouldn't be. In the case of the gen. constructors using fields dialog, the upper combobox and label are grabbing vertical space when they shouldn't be either.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/GenerateNewConstructorUsingFieldsAction.java
if (supertype != null) {
			IMethod[] superMethods= supertype.getMethods();
			boolean constuctorFound= false;
			for (int i= 0; i < superMethods.length; i++) {
					IMethod curr= superMethods[i];
					if (curr.isConstructor())  {
						constuctorFound= true;
						if (JavaModelUtil.isVisibleInHierarchy(curr, type.getPackageFragment())) {
							constructorMethods.add(curr);
						}
					}
			}
			
			if (!constuctorFound)  {
				IType objectType= type.getJavaProject().findType("java.lang.Object"); 
				IMethod curr= objectType.getMethod("Object", new String[0]);  
				constructorMethods.add(curr);
			}
		}
		return (IMethod[]) constructorMethods.toArray(new IMethod[constructorMethods.size()]);
	}
	
	private static ISelectionStatusValidator createValidator(int entries, GenerateConstructorUsingFieldsSelectionDialog dialog, IType type) {
		GenerateConstructorUsingFieldsValidator validator= new GenerateConstructorUsingFieldsValidator(entries, dialog, type);
		return validator;
	}
	private String getDialogTitle() {
		return fDialogTitle;
	}
	private static class GenerateConstructorUsingFieldsValidator implements ISelectionStatusValidator {