 import mx.core.UITextField;
 import mx.core.mx_internal;
 import mx.events.FlexEvent;
-import mx.events.InterManagerRequest;
 import mx.events.ToolTipEvent;
 import mx.events.TreeEvent;
 import mx.managers.ISystemManager;

import flash.events.MouseEvent;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.utils.getDefinitionByName;
import mx.controls.Tree;
import mx.controls.listClasses.BaseListData;
import mx.controls.listClasses.IDropInListItemRenderer;
import mx.controls.listClasses.IListItemRenderer;
import mx.core.IDataRenderer;
import mx.core.IFlexDisplayObject;
import mx.core.IFlexModuleFactory
import mx.core.IFontContextComponent;
import mx.core.IToolTip;
import mx.core.IUITextField;
import mx.core.SpriteAsset;

                    disclosureIcon = disclosureInstance;
                }

                // Let the disclosureIcon inherit the layoutDirection
                if (disclosureIcon is ILayoutDirectionElement)
                    ILayoutDirectionElement(disclosureIcon).layoutDirection = null;
                
                addChild(disclosureIcon as DisplayObject);
                disclosureIcon.addEventListener(MouseEvent.MOUSE_DOWN,
                        disclosureIcon_mouseDownHandler);
