Bug 159940 [DataBinding] DataBindingContext shouldn't expose the bindings list as a mutable list
Currently in DataBindingContext getBindings() exposes the bindings observable list as a mutable observable list. I think we need to make this an unmodifiable list and also add a removeBinding(Binding binding) method to the API of DataBindingContext so that the DBC can remove itself from the binding when removed from the DBC. I'll create a patch soon.
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/DataBindingContext.java
if (parent != null) {
			return parent.isAssignableFromTo(fromType, toType);
		}
		
		return true;
	}
	/**
	 * Adds the given binding to this data binding context.
	 * 
	 * @param binding
	 *            The binding to add.
	 */
	public void addBinding(Binding binding) {
		bindings.add(binding);
		binding.setDataBindingContext(this);
	}
	/**
	 * Removes a listener from the set of listeners that will be notified when
	 * an event occurs in the data flow pipeline that is managed by any binding
	 * created by this data binding context.
	 * 
	 * @param listener
	 *            The listener to remove.
	 */
	public void removeBindingEventListener(IBindingListener listener) {
		bindingEventListeners.remove(listener);
	}
	/**
	 * Updates all model observable objects to reflect the current state of the
	 * target observable objects.