Bug 147530 [DataBinding] Provide event objects for change listeners
Before data binding goes 1.0 it would be wise to provide EventObjects for the following listeners to ensure that the API doesn't preclude future expansion of the values supplied to listeners. Interfaces that would be affected: * IValueChangeListener * IValueChangingListener * IListChangeListener * ISetChangeListener * IMappingChangeListener
bundles/org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/map/ObservableMap.java
public boolean isEmpty() {
		getterCalled();
		return wrappedMap.isEmpty();
	}
	public Set keySet() {
		getterCalled();
		return wrappedMap.keySet();
	}
	public int size() {
		getterCalled();
		return wrappedMap.size();
	}
	public Collection values() {
		getterCalled();
		return wrappedMap.values();
	}
	/**
	 * Returns the stale state.  Must be invoked from the current realm.
	 * 
	 * @return stale state
	 */
	public boolean isStale() {
		checkRealm();
		return stale;
	}
	/**
	 * Sets the stale state.  Must be invoked from the current realm.
	 * 
	 * @param stale
	 *            The stale state to set. This will fire a stale event if the