Base for classes that represent, manage and construct views ("UI").
Inheritance: ModelBase, IView, ISize
        public ViewFocus(ViewBase view, jQueryObject element)
        {
            // Setup initial conditions.
            this.view = view;
            this.element = element;

            // Wire up events.
            element.Bind(Html.Focus, delegate(jQueryEvent e) { HandleFocusChanged(true); });
            element.Bind(Html.Blur, delegate(jQueryEvent e) { HandleFocusChanged(false); });
            view.IsEnabledChanged += HandleIsEnabledChanged;
        }