function callback(node)
        {
            if (!node)
                return;
            if (event.type === "mousemove") {
                this.highlightDOMNode(node, this._inspectModeConfig);
                this._domModel.nodeHighlightRequested(node.id);
            } else if (event.type === "click") {
                WebInspector.Revealer.reveal(node);
            }
        }
@param {?WebInspector.DOMNode} node
@this {WebInspector.ScreencastView}