Bug 52064 Content assist in "New Class" Dialog shows interfaces
Content Assist is available for the superclass in M7. However it also lists interfaces. If an interface is selected, the generated class "extends" it instead of "implementing" it.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
* @param canBeModified if <code>true</code> the modifier fields are
	 * editable; otherwise they are read-only
	 * @see Flags 
	 */		
	public void setModifiers(int modifiers, boolean canBeModified) {
		if (Flags.isPublic(modifiers)) {
			fAccMdfButtons.setSelection(PUBLIC_INDEX, true);
		} else if (Flags.isPrivate(modifiers)) {
			fAccMdfButtons.setSelection(PRIVATE_INDEX, true);
		} else if (Flags.isProtected(modifiers)) {
			fAccMdfButtons.setSelection(PROTECTED_INDEX, true);
		} else {
			fAccMdfButtons.setSelection(DEFAULT_INDEX, true);
		}
		if (Flags.isAbstract(modifiers)) {
			fOtherMdfButtons.setSelection(ABSTRACT_INDEX, true);
		}
		if (Flags.isFinal(modifiers)) {
			fOtherMdfButtons.setSelection(FINAL_INDEX, true);
		}		
		if (Flags.isStatic(modifiers)) {
			fOtherMdfButtons.setSelection(STATIC_INDEX, true);
		}
		
		fAccMdfButtons.setEnabled(canBeModified);
		fOtherMdfButtons.setEnabled(canBeModified);
	}
		
	/**
	 * Returns the content of the superclass input field.