 import mx.utils.BitFlagUtil;
 
 import spark.components.supportClasses.SkinnableComponent;
+import spark.core.IDisplayText;
 import spark.layouts.supportClasses.LayoutBase;
 
 use namespace mx_internal;

 */
[Style(name="backgroundAlpha", type="Number", inherit="no")]

// FIXME (jasonsj): text styles for titleDisplay?
//include "../../styles/metadata/BasicInheritingTextStyles.as"
//include "../../styles/metadata/AdvancedInheritingTextStyles.as"
//include "../../styles/metadata/SelectionFormatTextStyles.as"

/**
 *  The ActionBar class defines a component that includes title, navigation 

            index = TITLE_GROUP_PROPERTIES_INDEX;
            
            // use titleContent if provided
            defaultContent = (titleDisplay is IVisualElement)
                ? [titleDisplay] : null;
        }
        else if (instance == actionGroup)
        {
