AutoComplete.js

Souce Code [top]

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/**

 * Class providing the customizable functionality of a plug-and-play DHTML

 * auto complete widget.  Some key features:

 * <ul>

 * <li>Navigate with up/down arrow keys and/or mouse to pick a selection</li>

 * <li>The drop down container can "roll down" or "fly out" via configurable

 * animation</li>

 * <li>UI look-and-feel customizable through CSS, including container

 * attributes, borders, position, fonts, etc</li>

 * </ul>

 *

 * requires YAHOO.util.Dom Dom utility

 * requires YAHOO.util.Event Event utility

 * requires YAHOO.widget.DataSource Data source class      

 * see YAHOO.util.Animation Animation utility

 * see JSON JSON library

 *  

 * @constructor

 * @param {HTMLElement} inputEl DOM element reference or string ID of the auto complete input field

 * @param {HTMLElement} containerEl DOM element reference or string ID of the auto complete &lt;div&gt;

 *                              container

 * @param {object} oDataSource Instance of YAHOO.widget.DataSource for query/results

 * @param {object} oConfigs Optional object literal of config params

 */

YAHOO.widget.AutoComplete = function(inputEl,containerEl,oDataSource,oConfigs) {

    if(inputEl && containerEl && oDataSource) {

        // Validate data source

        if (oDataSource.getResults) {

            this.dataSource = oDataSource;

        }

        else {

            //YAHOO.log("Could not instantiate AutoComplete due to an invalid DataSource", "error");

            return;

        }

        // Validate input element

        if(YAHOO.util.Dom.inDocument(inputEl)) {

            if(typeof inputEl == "string") {

                    this._sName = inputEl + YAHOO.widget.AutoComplete._nIndex;

                    this._oTextbox = document.getElementById(inputEl);

            }

            else {

                this._sName = (inputEl.id) ?

                    inputEl.id + YAHOO.widget.AutoComplete._nIndex :

                    "yac_inputEl" + YAHOO.widget.AutoComplete._nIndex;

                this._oTextbox = inputEl;

            }

        }

        else {

            //YAHOO.log("Could not instantiate AutoComplete due to an invalid input element", "error");

            return;

        }



        // Validate container element

        if(YAHOO.util.Dom.inDocument(containerEl)) {

            if(typeof containerEl == "string") {

                    this._oContainer = document.getElementById(containerEl);

            }

            else {

                this._oContainer = containerEl;

            }

        }

        else {

            //YAHOO.log("Could not instantiate AutoComplete due to an invalid container element", "error");

            return;

        }



        // Set any config params passed in to override defaults

        if (typeof oConfigs == "object") {

            for(var sConfig in oConfigs) {

                if (sConfig) {

                    this[sConfig] = oConfigs[sConfig];

                }

            }

        }



        // Initialization sequence

        var oSelf = this;

        var oTextbox = this._oTextbox;

        var oContainer = this._oContainer;



        YAHOO.util.Event.addListener(oTextbox,'keyup',oSelf._onTextboxKeyUp,oSelf);

        YAHOO.util.Event.addListener(oTextbox,'keydown',oSelf._onTextboxKeyDown,oSelf);

        YAHOO.util.Event.addListener(oTextbox,'keypress',oSelf._onTextboxKeyPress,oSelf);

        YAHOO.util.Event.addListener(oTextbox,'focus',oSelf._onTextboxFocus,oSelf);

        YAHOO.util.Event.addListener(oTextbox,'blur',oSelf._onTextboxBlur,oSelf);

        YAHOO.util.Event.addListener(oContainer,'mouseover',oSelf._onContainerMouseover,oSelf);

        YAHOO.util.Event.addListener(oContainer,'mouseout',oSelf._onContainerMouseout,oSelf);

        YAHOO.util.Event.addListener(oContainer,'scroll',oSelf._onContainerScroll,oSelf);



        this.textboxFocusEvent = new YAHOO.util.CustomEvent("textboxFocus", this);

        this.textboxKeyEvent = new YAHOO.util.CustomEvent("textboxKey", this);

        this.dataRequestEvent = new YAHOO.util.CustomEvent("dataRequest", this);

        this.dataReturnEvent = new YAHOO.util.CustomEvent("dataReturn", this);

        this.dataErrorEvent = new YAHOO.util.CustomEvent("dataError", this);

        this.containerExpandEvent = new YAHOO.util.CustomEvent("containerExpand", this);

        this.typeAheadEvent = new YAHOO.util.CustomEvent("typeAhead", this);

        this.itemMouseOverEvent = new YAHOO.util.CustomEvent("itemMouseOver", this);

        this.itemMouseOutEvent = new YAHOO.util.CustomEvent("itemMouseOut", this);

        this.itemArrowToEvent = new YAHOO.util.CustomEvent("itemArrowTo", this);

        this.itemArrowFromEvent = new YAHOO.util.CustomEvent("itemArrowFrom", this);

        this.itemSelectEvent = new YAHOO.util.CustomEvent("itemSelect", this);

        this.selectionEnforceEvent = new YAHOO.util.CustomEvent("selectionEnforce", this);

        this.containerCollapseEvent = new YAHOO.util.CustomEvent("containerCollapse", this);

        this.textboxBlurEvent = new YAHOO.util.CustomEvent("textboxBlur", this);



        // Turn off autocomplete on textbox

        oTextbox.setAttribute("autocomplete","off");



        // Validate and initialize public configs

        this._initProps();

    }

    // Required arguments were not found

    else {

        //YAHOO.log("Could not instantiate AutoComplete due invalid arguments", "error");

    }

};





/***************************************************************************

 * Public member variables

 ***************************************************************************/

/**

 * The data source object that encapsulates the data used for auto completion.

 * This object should be an inherited object from YAHOO.widget.DataSource.

 *

 * @type object

 */

YAHOO.widget.AutoComplete.prototype.dataSource = null;



/**

 * Number of characters that must be entered before querying for results.

 * Default: 1.

 *

 * @type number

 */

YAHOO.widget.AutoComplete.prototype.minQueryLength = 1;



/**

 * Maximum number of results to display in auto complete container. Default: 10.

 *

 * @type number

 */

YAHOO.widget.AutoComplete.prototype.maxResultsDisplayed = 10;



/**

 * Number of seconds to delay before submitting a query request.  If a query

 * request is received before a previous one has completed its delay, the

 * previous request is cancelled and the new request is set to the delay.

 * Default: 0.5.

 *

 * @type number

 */

YAHOO.widget.AutoComplete.prototype.queryDelay = 0.5;



/**

 * Class name of a highlighted item within the auto complete container.

 * Default: "highlight".

 *

 * @type string

 */

YAHOO.widget.AutoComplete.prototype.highlightClassName = "highlight";



/**

 * Query delimiter. A single character separator for multiple delimited

 * selections. Multiple delimiter characteres may be defined as an array of

 * strings. A null value or empty string indicates that query results cannot

 * be delimited. This feature is not recommended if you need forceSelection to

 * be true. Default: null.

 *

 * @type string or array

 */

YAHOO.widget.AutoComplete.prototype.delimChar = null;



/**

 * Whether or not the auto complete input field should be automatically updated

 * with the first query result as the user types, auto-selecting the substring

 * that the user has not typed. Default: false.

 *

 * @type boolean

 */

YAHOO.widget.AutoComplete.prototype.typeAhead = false;



/**

 * Whether or not to animate the expansion/collapse of the auto complete

 * container in the horizontal direction.  Default: false.

 *

 * @type boolean

 */

YAHOO.widget.AutoComplete.prototype.animHoriz = false;



/**

 * Whether or not to animate the expansion/collapse of the auto complete

 * container in the vertical direction.  Default: true.

 *

 * @type boolean

 */

YAHOO.widget.AutoComplete.prototype.animVert = true;



/**

 * Speed of container expand/collapse animation, in seconds. Default: 0.3.

 *

 * @type number

 */

YAHOO.widget.AutoComplete.prototype.animSpeed = 0.3;



/**

 * Whether or not to force the user's selection to match one of the query

 * results. Enabling this feature essentially transforms the auto complete form

 * input field into a &lt;select&gt; field. This feature is not recommended

 * with delimiter character(s) defined. Default: false.

 *

 * @type boolean

 */

YAHOO.widget.AutoComplete.prototype.forceSelection = false;



/***************************************************************************

 * Public methods

 ***************************************************************************/

 /**

 * Public accessor to the unique name of the auto complete instance.

 *

 * @return {string} Unique name of the auto complete instance

 */

YAHOO.widget.AutoComplete.prototype.getName = function() {

    return this._sName;

};



/**

 * Public accessor to the internal array of DOM &lt;li&gt; element IDs that

 * display query results within the auto complete container.

 *

 * @return {array} Array of &lt;li&gt; element IDs within the auto complete

 *                 container

 */

YAHOO.widget.AutoComplete.prototype.getListIds = function() {

    return this._aListIds;

};



/**

 * Sets HTML markup for the auto complete container header. This markup will be

 * inserted within a &lt;div&gt; tag with a class of "ac_hd".

 *

 * @param {string} sHeader HTML markup for container header

 */

YAHOO.widget.AutoComplete.prototype.setHeader = function(sHeader) {

    if(sHeader) {

        this._oHeader.innerHTML = sHeader;

        this._oHeader.style.display = "block";

    }

};



/**

 * Sets HTML markup for the auto complete container footer. This markup will be

 * inserted within a &lt;div&gt; tag with a class of "ac_ft".

 *

 * @param {string} sFooter HTML markup for container footer

 */

YAHOO.widget.AutoComplete.prototype.setFooter = function(sFooter) {

    if(sFooter) {

        this._oFooter.innerHTML = sFooter;

        this._oFooter.style.display = "block";

    }

};



/**

 * Whether or not to use an iFrame to layer over Windows form elements in

 * IE. Set to true only when the auto complete container will be on top of a

 * &lt;select&gt; field in IE and thus exposed to the IE z-index bug (i.e.,

 * 5.5 < IE < 7). Default:false.

 *

 * @type boolean

 */

YAHOO.widget.AutoComplete.prototype.useIFrame = false;



/**

 * Overridable method that converts a result item object into HTML markup

 * for display. Return data values are accessible via the oResultItem object,

 * and the key return value will always be oResultItem[0]. Markup will be

 * displayed within &lt;li&gt; element tags in the container.

 *

 * @param {object} oResultItem Result item object representing one query result

 * @param {string} sQuery The current query string

 * @return {string} HTML markup of formatted result data

 */

YAHOO.widget.AutoComplete.prototype.formatResult = function(oResultItem, sQuery) {

    var sResult = oResultItem[0];

    if(sResult) {

        return sResult;

    }

    else {

        return "";

    }

};



/***************************************************************************

 * Events

 ***************************************************************************/

/**

 * Fired when the auto complete text input box receives focus. Subscribers

 * receive the following array:<br>

 *     -  args[0] The auto complete object instance

 */

YAHOO.widget.AutoComplete.prototype.textboxFocusEvent = null;



/**

 * Fired when the auto complete text input box receives key input. Subscribers

 * receive the following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The keycode number

 */

YAHOO.widget.AutoComplete.prototype.textboxKeyEvent = null;



/**

 * Fired when the auto complete instance makes a query to the data source.

 * Subscribers receive the following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The query string

 */

YAHOO.widget.AutoComplete.prototype.dataRequestEvent = null;



/**

 * Fired when the auto complete instance receives query results from the data

 * source. Subscribers receive the following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The query string

 *     - args[2] Results array

 */

YAHOO.widget.AutoComplete.prototype.dataReturnEvent = null;



/**

 * Fired when the auto complete instance does not receive query results from the

 * data source due to an error. Subscribers receive the following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The query string

 */

YAHOO.widget.AutoComplete.prototype.dataErrorEvent = null;



/**

 * Fired when the auto complete container is expanded. Subscribers receive the

 * following array:<br>

 *     - args[0] The auto complete object instance

 */

YAHOO.widget.AutoComplete.prototype.containerExpandEvent = null;



/**

 * Fired when the auto complete textbox has been prefilled by the type-ahead

 * feature. Subscribers receive the following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The query string

 *     - args[2] The prefill string

 */

YAHOO.widget.AutoComplete.prototype.typeAheadEvent = null;



/**

 * Fired when result item has been moused over. Subscribers receive the following

 * array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The &lt;li&gt element item moused to

 */

YAHOO.widget.AutoComplete.prototype.itemMouseOverEvent = null;



/**

 * Fired when result item has been moused out. Subscribers receive the

 * following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The &lt;li&gt; element item moused from

 */

YAHOO.widget.AutoComplete.prototype.itemMouseOutEvent = null;



/**

 * Fired when result item has been arrowed to. Subscribers receive the following

 * array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The &lt;li&gt; element item arrowed to

 */

YAHOO.widget.AutoComplete.prototype.itemArrowToEvent = null;



/**

 * Fired when result item has been arrowed away from. Subscribers receive the

 * following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The &lt;li&gt; element item arrowed from

 */

YAHOO.widget.AutoComplete.prototype.itemArrowFromEvent = null;



/**

 * Fired when an item is selected via mouse click, ENTER key, or TAB key.

 * Subscribers receive the following array:<br>

 *     - args[0] The auto complete object instance

 *     - args[1] The selected &lt;li&gt; element item

 */

YAHOO.widget.AutoComplete.prototype.itemSelectEvent = null;



/**

 * Fired if forceSelection is enabled and the user's input has been cleared

 * because it did not match one of the returned query results. Subscribers

 * receive the following array:<br>

 *     - args[0] The auto complete object instance

 */

YAHOO.widget.AutoComplete.prototype.selectionEnforceEvent = null;



/**

 * Fired when the auto complete container is collapsed. Subscribers receive the

 * following array:<br>

 *     - args[0] The auto complete object instance

 */

YAHOO.widget.AutoComplete.prototype.containerCollapseEvent = null;



/**

 * Fired when the auto complete text input box loses focus. Subscribers receive

 * an array of the following array:<br>

 *     - args[0] The auto complete object instance

 */

YAHOO.widget.AutoComplete.prototype.textboxBlurEvent = null;



/***************************************************************************

 * Private member variables

 ***************************************************************************/

/**

 * Internal class variable to index multiple auto complete instances.

 *

 * @type number

 * @private

 */

YAHOO.widget.AutoComplete._nIndex = 0;



/**

 * Name of auto complete instance.

 *

 * @type string

 * @private

 */

YAHOO.widget.AutoComplete.prototype._sName = null;



/**

 * Text input box DOM element.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oTextbox = null;



/**

 * Whether or not the textbox is currently in focus. If query results come back

 * but the user has already moved on, do not proceed with auto complete behavior.

 *

 * @type boolean

 * @private

 */

YAHOO.widget.AutoComplete.prototype._bFocused = true;



/**

 * Animation instance for container expand/collapse.

 *

 * @type boolean

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oAnim = null;



/**

 * Container DOM element.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oContainer = null;



/**

 * Whether or not the auto complete container is currently open.

 *

 * @type boolean

 * @private

 */

YAHOO.widget.AutoComplete.prototype._bContainerOpen = false;



/**

 * Whether or not the mouse is currently over the auto complete

 * container. This is necessary in order to prevent clicks on container items

 * from being text input box blur events.

 *

 * @type boolean

 * @private

 */

YAHOO.widget.AutoComplete.prototype._bOverContainer = false;



/**

 * iFrame DOM element. Only used in IE for iframe trick.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oIFrame = null;



/**

 * Content DOM element. Only used in IE for iFrame trick.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oContent = null;



/**

 * Container header DOM element.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oHeader = null;



/**

 * Container footer DOM element.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oFooter = null;



/**

 * Array of &lt;li&gt; elements IDs used to display query results within the

 * auto complete container.

 *

 * @type array

 * @private

 */

YAHOO.widget.AutoComplete.prototype._aListIds = null;



/**

 * Number of &lt;li&gt; elements currently displayed in auto complete container.

 *

 * @type number

 * @private

 */

YAHOO.widget.AutoComplete.prototype._nDisplayedItems = 0;



/**

 * Current query string

 *

 * @type string

 * @private

 */

YAHOO.widget.AutoComplete.prototype._sCurQuery = null;



/**

 * Past queries this session (for saving delimited queries).

 *

 * @type string

 * @private

 */

YAHOO.widget.AutoComplete.prototype._sSavedQuery = null;



/**

 * Pointer to the currently highlighted &lt;li&gt; element in the container.

 *

 * @type object

 * @private

 */

YAHOO.widget.AutoComplete.prototype._oCurItem = null;



/**

 * Whether or not an item has been selected since the container was populated

 * with results. Reset to false by _populateList, and set to true when item is

 * selected.

 *

 * @type boolean

 * @private

 */

YAHOO.widget.AutoComplete.prototype._bItemSelected = false;



/**

 * Key code of the last key pressed in textbox.

 *

 * @type number

 * @private

 */

YAHOO.widget.AutoComplete.prototype._nKeyCode = null;



/**

 * Delay timeout ID.

 *

 * @type number

 * @private

 */

YAHOO.widget.AutoComplete.prototype._nDelayID = -1;



/***************************************************************************

 * Private methods

 ***************************************************************************/

/**

 * Updates and validates latest public config properties.

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._initProps = function() {

    // Correct any invalid values

    var minQueryLength = this.minQueryLength;

    if(isNaN(minQueryLength) || (minQueryLength < 1)) {

        minQueryLength = 1;

    }

    var maxResultsDisplayed = this.maxResultsDisplayed;

    if(isNaN(this.maxResultsDisplayed) || (this.maxResultsDisplayed < 1)) {

        this.maxResultsDisplayed = 10;

    }

    var queryDelay = this.queryDelay;

    if(isNaN(this.queryDelay) || (this.queryDelay < 0)) {

        this.queryDelay = 0.5;

    }

    var aDelimChar = (this.delimChar) ? this.delimChar : null;

    if(aDelimChar) {

        if(typeof aDelimChar == "string") {

            this.delimChar = [aDelimChar];

        }

        else if(aDelimChar.constructor != Array) {

            this.delimChar = null;

        }

    }

    var animSpeed = this.animSpeed;

    if(this.animHoriz || this.animVert) {

        if(isNaN(animSpeed) || (animSpeed < 0)) {

            animSpeed = 0.3;

        }



        if(!this._oAnim && YAHOO.util.Anim) {

            this._oAnim = new YAHOO.util.Anim(this._oContainer, {}, animSpeed);

        }

        else if(this._oAnim) {

            this._oAnim.duration = animSpeed;

        }

    }

    if(this.forceSelection && this.delimChar) {

        //YAHOO.log(oSelf.getName() + " has enabled force selection with delimiter character(s) defined.","warn");

    }

    if (!this._aListIds) {

        this._aListIds = [];

    }

    if(!this._aListIds || (this.maxResultsDisplayed != this._aListIds.length)) {

        this._initContainer();

    }

};



/**

 * Initializes the auto complete container

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._initContainer = function() {

    // Create the max number of <li> elements, but hide them all

    this._aListIds = [];

    var aItemsMarkup = [];

    var sName = this._sName;

    var sPrefix = sName + "item";

    var sHeaderID = sName + "header";

    var sFooterID = sName + "footer";



    for(var i = this.maxResultsDisplayed-1; i >= 0 ; i--) {

        var sItemID = sPrefix + i;

        this._aListIds[i] = sItemID;

        aItemsMarkup.unshift("<li id='" + sItemID + "'></li>\n");

    }



    var sList = "<ul id='" + sName + "list'>" +

        aItemsMarkup.join("") + "</ul>";



    // Need this iFrame trick to make sure the container appears over form

    // elements to workaround IE z-index bug

    var sContent = (this.useIFrame) ?

            ["<div id='",

            sName,

            "content'>",

            "<div id='",

            sHeaderID,

            "' class='ac_hd'></div><div class='ac_bd'>",

            sList,

            "</div><div id='",

            sFooterID,

            "' class='ac_ft'></div>",

            "</div><iframe id='",

            sName,

            "iframe' src='about:blank' frameborder='0' scrolling='no'>",

            "</iframe>"] :



            ["<div id='",

            sHeaderID,

            "' class='ac_hd'></div><div class='ac_bd'>",

            sList,

            "</div><div id='",

            sFooterID,

            "' class='ac_ft'></div>"];



    sContent = sContent.join("");

    this._oContainer.innerHTML = sContent;



    this._oHeader = document.getElementById(sHeaderID);

    this._oFooter = document.getElementById(sFooterID);



    if (this.useIFrame) {

        this._oContent = document.getElementById(sName + "content");

        this._oIFrame = document.getElementById(sName + "iframe");

        this._oContent.style.position = "relative";

        this._oIFrame.style.position = "relative";

        this._oContent.style.zIndex = 9050;

    }



    this._oContainer.style.display = "none";

    this._oHeader.style.display = "none";

    this._oFooter.style.display = "none";



    this._initItems();

};



/**

 * Initializes up to YAHOO.widget.AutoComplete#maxResultsDisplayed &lt;li&gt;

 * elements in the container.

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._initItems = function() {

    // set properties & events for each item now that they are in the DOM

    for(var i = this.maxResultsDisplayed-1; i >= 0 ; i--) {

        var oItem = document.getElementById(this._aListIds[i]);

        this._initItem(oItem, i);

    }

};



/**

 * Initializes each &lt;li&gt; element in the container .

 *

 * @param {object} oItem The &lt;li&gt; DOM element

 * @param {number} onItemIndex The index of the element

 * @private

 */

YAHOO.widget.AutoComplete.prototype._initItem = function(oItem, nItemIndex) {

    var oSelf = this;

    oItem.style.display = "none";

    oItem._nItemIndex = nItemIndex;

    oItem.mouseover = oItem.mouseout = oItem.onclick = null;

    YAHOO.util.Event.addListener(oItem,'mouseover',oSelf._onItemMouseover,oSelf);

    YAHOO.util.Event.addListener(oItem,'mouseout',oSelf._onItemMouseout,oSelf);

    YAHOO.util.Event.addListener(oItem,'click',oSelf._onItemMouseclick,oSelf);

};



/**

 * Handles &lt;li&gt; element mouseover events in the container.

 *

 * @param {event} v The mouseover event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onItemMouseover = function(v,oSelf) {

    oSelf._toggleHighlight(this,'mouseover');

    oSelf.itemMouseOverEvent.fire(oSelf, this);

    //YAHOO.log(oSelf.getName() + " moused over " + this.id);



};



/**

 * Handles &lt;li&gt; element mouseout events in the container.

 *

 * @param {event} v The mouseout event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onItemMouseout = function(v,oSelf) {

    oSelf._toggleHighlight(this,'mouseout');

    oSelf.itemMouseOutEvent.fire(oSelf, this);

    //YAHOO.log(oSelf.getName() + " moused out from " + this.id);

};



/**

 * Handles &lt;li&gt; element click events in the container.

 *

 * @param {event} v The click event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onItemMouseclick = function(v,oSelf) {

    // In case item has not been moused over

    oSelf._toggleHighlight(this,'mouseover');

    oSelf._selectItem(this);

};



/**

 * Handles container mouseover events.

 *

 * @param {event} v The mouseover event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onContainerMouseover = function(v,oSelf) {

    oSelf._bOverContainer = true;

};



/**

 * Handles container mouseout events.

 *

 * @param {event} v The mouseout event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onContainerMouseout = function(v,oSelf) {

    oSelf._bOverContainer = false;

    // If container is still active

    if(oSelf._oCurItem) {

        oSelf._toggleHighlight(oSelf._oCurItem,'mouseover');

    }

};



/**

 * Handles container scroll events.

 *

 * @param {event} v The scroll event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onContainerScroll = function(v,oSelf) {

    oSelf._oTextbox.focus();

};





/**

 * Handles textbox keydown events of functional keys, mainly for UI behavior.

 *

 * @param {event} v The keydown event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onTextboxKeyDown = function(v,oSelf) {

    var nKeyCode = v.keyCode;



    switch (nKeyCode) {

        case 9: // tab

            if(oSelf.delimChar && (oSelf._nKeyCode != nKeyCode)) {

                if(oSelf._bContainerOpen) {

                    YAHOO.util.Event.stopEvent(v);

                }

            }

            // select an item or clear out

            if(oSelf._oCurItem) {

                oSelf._selectItem(oSelf._oCurItem);

            }

            else {

                oSelf._clearList();

            }

            break;

        case 13: // enter

            if(oSelf._nKeyCode != nKeyCode) {

                if(oSelf._bContainerOpen) {

                    YAHOO.util.Event.stopEvent(v);

                }

            }

            if(oSelf._oCurItem) {

                oSelf._selectItem(oSelf._oCurItem);

            }

            else {

                oSelf._clearList();

            }

            break;

        case 27: // esc

            oSelf._clearList();

            return;

        case 39: // right

            oSelf._jumpSelection();

            break;

        case 38: // up

            YAHOO.util.Event.stopEvent(v);

            oSelf._moveSelection(nKeyCode);

            break;

        case 40: // down

            YAHOO.util.Event.stopEvent(v);

            oSelf._moveSelection(nKeyCode);

            break;

        default:

            break;

    }

};



/**

 * Handles textbox keypress events, mainly for FF.

 *

 * @param {event} v The keyup event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onTextboxKeyPress = function(v,oSelf) {

    var nKeyCode = v.keyCode;



    // for FF < 1.0

    switch (nKeyCode) {

    case 9: // tab

    case 13: // enter

        if(oSelf.delimChar && (oSelf._nKeyCode != nKeyCode)) {

            if(oSelf._bContainerOpen) {

                YAHOO.util.Event.stopEvent(v);

            }

        }

        break;

    case 38: // up

    case 40: // down

        YAHOO.util.Event.stopEvent(v);

        break;

    default:

        break;

    }

};



/**

 * Handles textbox keyup events that trigger queries.

 *

 * @param {event} v The keyup event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onTextboxKeyUp = function(v,oSelf) {

    // Check to see if any of the public properties have been updated

    oSelf._initProps();



    var nKeyCode = v.keyCode;

    oSelf._nKeyCode = nKeyCode;

    var sChar = String.fromCharCode(nKeyCode);

    var sText = this.value; //string in textbox



    // Filter out chars that don't trigger queries

    if (oSelf._isIgnoreKey(nKeyCode) || (sText.toLowerCase() == this._sCurQuery)) {

        return;

    }

    else {

        oSelf.textboxKeyEvent.fire(oSelf, nKeyCode);

        //YAHOO.log(oSelf.getName() + " received key input " + nKeyCode);

    }



    // Set timeout on the request

    if (oSelf.queryDelay > 0) {

        var nDelayID =

            setTimeout(function(){oSelf._sendQuery(sText);},(oSelf.queryDelay * 1000));



        if (oSelf._nDelayID != -1) {

            clearTimeout(oSelf._nDelayID);

        }



        oSelf._nDelayID = nDelayID;

    }

    else {

        // No delay so send request immediately

        oSelf._sendQuery(sText);

    }

};



/**

 * Whether or not key is functional or should be ignored. Note that the right

 * arrow key is NOT an ignored key since it triggers queries for certain intl

 * charsets.

 *

 * @param {number} nKeycode Code of key pressed

 * @return {boolean} Whether or not to be ignore key

 * @private

 */

YAHOO.widget.AutoComplete.prototype._isIgnoreKey = function(nKeyCode) {

    if(this.typeAhead) { // fewer query triggers when type ahead is on

        if((nKeyCode == 8) || // backspace

        (nKeyCode == 39) || // right

        (nKeyCode == 46)) { // delete

            return true;

        }

    }

    if ((nKeyCode == 9) || (nKeyCode == 13)  || // tab, enter

            (nKeyCode == 16) || (nKeyCode == 17) || // shift, ctl

            (nKeyCode >= 18 && nKeyCode <= 20) || // alt,pause/break,caps lock

            (nKeyCode == 27) || // esc

            (nKeyCode >= 33 && nKeyCode <= 35) || // page up,page down,end

            (nKeyCode >= 36 && nKeyCode <= 38) || // home,left,up

            (nKeyCode == 40) || // down

            (nKeyCode >= 44 && nKeyCode <= 45)) { // print screen,insert

        return true;

    }

    return false;

};



/**

 * Handles text input box receiving focus.

 *

 * @param {event} v The focus event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onTextboxFocus = function (v,oSelf) {

    oSelf._bFocused = true;

    oSelf.textboxFocusEvent.fire(oSelf);

    //YAHOO.log(oSelf.getName() + " textbox focused");

};



/**

 * Handles text input box losing focus.

 *

 * @param {event} v The focus event

 * @param {object} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._onTextboxBlur = function (v,oSelf) {

    // Don't treat as a blur if it was a selection via mouse click

    if(!oSelf._bOverContainer || (oSelf._nKeyCode == 9)) {

        // Current query needs to be validated

        if(oSelf.forceSelection && !oSelf._bItemSelected) {

            if(!oSelf._bContainerOpen || (oSelf._bContainerOpen && !oSelf._textMatchesOption())) {

                oSelf._clearSelection();

            }

        }



        if(oSelf._bContainerOpen) {

            oSelf._clearList();

        }

        oSelf._bFocused = false;

        oSelf.textboxBlurEvent.fire(oSelf);

        //YAHOO.log(oSelf.getName() + " textbox blurred");

    }

};



/**

 * Makes query request to the data source.

 *

 * @param {string} sQuery Query string.

 * @private

 */

YAHOO.widget.AutoComplete.prototype._sendQuery = function(sQuery) {

    // Delimiter has been enabled

    var aDelimChar = (this.delimChar) ? this.delimChar : null;

    if(aDelimChar) {

        // Loop through all possible delimiters and find the latest one

        // A " " may be a false positive if they are defined as delimiters AND

        // are used to separate delimited queries

        var nDelimIndex = -1;

        for(var i = aDelimChar.length-1; i >= 0; i--) {

            var nNewIndex = sQuery.lastIndexOf(aDelimChar[i]);

            if(nNewIndex > nDelimIndex) {

                nDelimIndex = nNewIndex;

            }

        }

        // If we think the last delimiter is a space (" "), make sure it is NOT

        // a false positive by also checking the char directly before it

        if(aDelimChar[i] == " ") {

            for (var j = aDelimChar.length-1; j >= 0; j--) {

                if(sQuery[nDelimIndex - 1] == aDelimChar[j]) {

                    nDelimIndex--;

                    break;

                }

            }

        }

        // A delimiter has been found so extract the latest query

        if (nDelimIndex > -1) {

            var nQueryStart = nDelimIndex + 1;

            // Trim any white space from the beginning...

            while(sQuery.charAt(nQueryStart) == " ") {

                nQueryStart += 1;

            }

            // ...and save the rest of the string for later

            this._sSavedQuery = sQuery.substring(0,nQueryStart);

            // Here is the query itself

            sQuery = sQuery.substr(nQueryStart);

        }

        else if(sQuery.indexOf(this._sSavedQuery) < 0){

            this._sSavedQuery = null;

        }

    }



    // Don't search queries that are too short

    if (sQuery.length < this.minQueryLength) {

        if (this._nDelayID != -1) {

            clearTimeout(this._nDelayID);

        }

        this._clearList();

        return;

    }



    sQuery = encodeURI(sQuery);

    this._nDelayID = -1;    // Reset timeout ID because request has been made

    this.dataRequestEvent.fire(this, sQuery);

    //YAHOO.log(this.getName() + " requested data for query \"" + sQuery + "\"");

    this.dataSource.getResults(this._populateList, sQuery, this);

};



/**

 * Hides all visuals related to the array of &lt;li&gt; elements in the container.

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._clearList = function() {

    this._toggleContainer(false);

    this._oContainer.scrollTop = 0;

    var aItems = this._aListIds;



    for(var i = aItems.length-1; i >= 0 ; i--) {

        document.getElementById(aItems[i]).style.display = "none";

    }



    if (this._oCurItem) {

        this._toggleHighlight(this._oCurItem,'mouseout');

    }



    this._oCurItem = null;

    this._nDisplayedItems = 0;

    this._sCurQuery = null;

};



/**

 * Populates the array of &lt;li&gt; elements in the container with query

 * results. This method is passed to YAHOO.widget.DataSource#getResults as a

 * callback function so results from the datasource are returned to the

 * auto complete instance.

 *

 * @param {string} sQuery The query string

 * @param {object} aResults An array of query result objects from the data source

 * @param {string} oSelf The auto complete instance

 * @private

 */

YAHOO.widget.AutoComplete.prototype._populateList = function(sQuery, aResults, oSelf) {

    if(aResults === null) {

        oSelf.dataErrorEvent.fire(oSelf, sQuery);

        //YAHOO.log(oSelf.getName() + " data error for query \"" + sQuery + "\"");

    }

    else {

        oSelf.dataReturnEvent.fire(oSelf, sQuery, aResults);

        //YAHOO.log(oSelf.getName() + " received " + aResults.length + " results for query \"" + sQuery + "\"");

    }



    if (!oSelf._bFocused || !aResults) {

        return;

    }



    var isOpera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);

    oSelf._oContainer.style.width = (!isOpera) ? null : "";

    oSelf._oContainer.style.height = (!isOpera) ? null : "";



    var sCurQuery = decodeURI(sQuery);

    oSelf._sCurQuery = sCurQuery;

    var aItems = oSelf._aListIds;

    oSelf._bItemSelected = false;



    var nItems = Math.min(aResults.length,oSelf.maxResultsDisplayed);

    oSelf._nDisplayedItems = nItems;

    if (nItems > 0) {

        // Fill items with data

        for(var i = nItems-1; i >= 0 ; i--) {

            var oItemi = document.getElementById(aItems[i]);

            var oResultItemi = aResults[i];

            oItemi.innerHTML = oSelf.formatResult(oResultItemi, sCurQuery);

            oItemi.style.display = "list-item";

            oItemi._sResultKey = oResultItemi[0];

            oItemi._oResultData = oResultItemi;



        }



        // Empty out remaining items if any

        for(var j = aItems.length-1; j >= nItems ; j--) {

            var oItemj = document.getElementById(aItems[j]);

            oItemj.innerHTML = null;

            oItemj.style.display = "none";

            oItemj._sResultKey = null;

            oItemj._oResultData = null;

        }



        // Select first item and show UI

        var oFirstItem = document.getElementById(aItems[0]);

        oSelf._toggleHighlight(oFirstItem,'mouseover');

        oSelf._toggleContainer(true);

        oSelf.itemArrowToEvent.fire(oSelf, oFirstItem);

        //YAHOO.log(oSelf.getName() + " arrowed to item " + oFirstItem.id);

        oSelf._typeAhead(oFirstItem,sQuery);

        oSelf._oCurItem = oFirstItem;

    }

    else {

        oSelf._clearList();

    }

};



/**

 * When YAHOO.widget.AutoComplete#bForceSelection is true and the user attempts

 * leave the text input box without selecting an item from the query results,

 * the user selection is cleared.

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._clearSelection = function() {

    var sValue = this._oTextbox.value;

    var sChar = (this.delimChar) ? this.delimChar[0] : null;

    var nIndex = (sChar) ? sValue.lastIndexOf(sChar, sValue.length-2) : -1;

    if(nIndex > -1) {

        this._oTextbox.value = sValue.substring(0,nIndex);

    }

    else {

         this._oTextbox.value = "";

    }

    this._sSavedQuery = this._oTextbox.value;



    // Fire custom event

    this.selectionEnforceEvent.fire(this);

    //YAHOO.log(this.getName() + " cleared an invalid selection");

};



/**

 * Whether or not user-typed value in the text input box matches any of the

 * query results.

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._textMatchesOption = function() {

    var foundMatch = false;



    for(var i = this._nDisplayedItems-1; i >= 0 ; i--) {

        var oItem = document.getElementById(this._aListIds[i]);

        var sMatch = oItem._sResultKey.toLowerCase();

        if (sMatch == this._sCurQuery.toLowerCase()) {

            foundMatch = true;

            break;

        }

    }

    return(foundMatch);

};



/**

 * Updates in the text input box with the first query result as the user types,

 * selecting the substring that the user has not typed.

 *

 * @param {object} oItem The &lt;li&gt; element item whose data populates the input field

 * @param {string} sQuery Query string

 * @private

 */

YAHOO.widget.AutoComplete.prototype._typeAhead = function(oItem, sQuery) {

    var oTextbox = this._oTextbox;

    var sValue = this._oTextbox.value; // any saved queries plus what user has typed



    // Don't update with type-ahead if turned off

    if (!this.typeAhead) {

        return;

    }



    // Don't update with type-ahead if text selection is not supported

    if(!oTextbox.setSelectionRange && !oTextbox.createTextRange) {

        return;

    }



    // Select the portion of text that the user has not typed

    var nStart = sValue.length;

    this._updateValue(oItem);

    var nEnd = oTextbox.value.length;

    this._selectText(oTextbox,nStart,nEnd);

    var sPrefill = oTextbox.value.substr(nStart,nEnd);

    this.typeAheadEvent.fire(this,sQuery,sPrefill);

    //YAHOO.log(this.getName() + " prefilled \"" + sPrefill + "\" for query " + sQuery + "\"");

};



/**

 * Selects text in a text input box.

 *

 * @param {object} oTextbox Text input box element in which to select text

 * @param {number} nStart Starting index of text string to select

 * @param {number} nEnd Ending index of text selection

 * @private

 */

YAHOO.widget.AutoComplete.prototype._selectText = function(oTextbox, nStart, nEnd) {

    if (oTextbox.setSelectionRange) { // For Mozilla

        oTextbox.setSelectionRange(nStart,nEnd);

    }

    else if (oTextbox.createTextRange) { // For IE

        var oTextRange = oTextbox.createTextRange();

        oTextRange.moveStart("character", nStart);

        oTextRange.moveEnd("character", nEnd-oTextbox.value.length);

        oTextRange.select();

    }

    else {

        oTextbox.select();

    }

};



/**

 * Animates expansion or collapse of the container.

 *

 * @param {boolean} bShow True if container should be expanded, false if

 *                        container should be collapsed

 * @private

 */

YAHOO.widget.AutoComplete.prototype._toggleContainer = function(bShow) {

    var oContainer = this._oContainer;

    // Don't animate if it's already closed && !bShow

    if (!bShow && !this._bContainerOpen) {

        oContainer.style.display = "none";

        return;

    }



    var oContent = this._oContent;

    var oIFrame = this._oIFrame;

    // Make the iframe used in the ie trick the same dimension as the content

    if (bShow && oContent && oIFrame) {

        var sDisplay = oContainer.style.display;

        oContainer.style.display = "block";

        oIFrame.style.width = oContent.offsetWidth+"px";

        oIFrame.style.height = oContent.offsetHeight+"px";

        oIFrame.style.marginTop = "-"+oContent.offsetHeight+"px";

        oContainer.style.display = sDisplay;

    }



    // If animation is enabled...

    var oAnim = this._oAnim;

    if (oAnim && oAnim.getEl() && (this.animHoriz || this.animVert)) {

        if(oAnim.isAnimated()) {

            oAnim.stop();

        }



        // Clone container to grab current size offscreen

        var oClone = oContainer.cloneNode(true);

        oContainer.parentNode.appendChild(oClone);

        oClone.style.top = "-9000px";

        oClone.style.display = "block";



        // Current size of the container is the EXPANDED size

        var wExp = oClone.offsetWidth;

        var hExp = oClone.offsetHeight;



        // Calculate COLLAPSED sizes based on horiz and vert anim

        var wColl = (this.animHoriz) ? 0 : wExp;

        var hColl = (this.animVert) ? 0 : hExp;



        // Set animation sizes

        oAnim.attributes = (bShow) ?

            {width: { to: wExp }, height: { to: hExp }} :

            {width: { to: wColl}, height: { to: hColl }};



        // If opening anew, set to a collapsed size...

        if(bShow && !this._bContainerOpen) {

            oContainer.style.width = wColl+"px";

            oContainer.style.height = hColl+"px";

        }

        // Else, set it to its last known size.

        else {

            oContainer.style.width = wExp+"px";

            oContainer.style.height = hExp+"px";

        }



        oContainer.parentNode.removeChild(oClone);

        oClone = null;



    	var oSelf = this;

    	var onAnimComplete = function() {

            // Finish the collapse

    		if(!bShow) {

                oContainer.style.display = "none";

    		}

    		oAnim.onComplete.unsubscribeAll();



            // Call event on expand/collapse (overridden by client)

            if(bShow) {

                oSelf.containerExpandEvent.fire(oSelf);

                //YAHOO.log(oSelf.getName() + " container expanded");

            }

            else {

                oSelf.containerCollapseEvent.fire(oSelf);

                //YAHOO.log(oSelf.getName() + " container collapsed");

            }

     	};



        // Display container and animate it

        oContainer.style.display = "block";

        oAnim.onComplete.subscribe(onAnimComplete);

        oAnim.animate();

        this._bContainerOpen = bShow;

    }

    // Else don't animate, just show or hide

    else {

        this._bContainerOpen = bShow;

        oContainer.style.display = (bShow) ? "block" : "none";



        // Call event on expand/collapse (overriden by client)

        if(bShow) {

            this.containerExpandEvent.fire(this);

            //YAHOO.log(this.getName() + " container expanded");

        }

        else {

            this.containerCollapseEvent.fire(this);

            //YAHOO.log(this.getName() + " container collapsed");

        }

    }

};



/**

 * Toggles the highlight on or off for an item in the container, and also cleans

 * up highlighting of any previous item.

 *

 * @param {object} oNewItem New The &lt;li&gt; element item to receive highlight

 *                              behavior

 * @param {string} sType "mouseover" will toggle highlight on, and "mouseout"

 *                       will toggle highlight off.

 * @private

 */

YAHOO.widget.AutoComplete.prototype._toggleHighlight = function(oNewItem, sType) {

    oNewItem.className = oNewItem.className.replace(this.highlightClassName,"");



    if(this._oCurItem) {

        this._oCurItem.className =

            this._oCurItem.className.replace(this.highlightClassName,"");

    }



    if(sType == 'mouseover') {

        oNewItem.className += " " + this.highlightClassName;

        this._oCurItem = oNewItem;

    }

};



/**

 * Updates the text input box value with selected query result. If a delimiter

 * has been defined, then the value gets appended with the delimiter.

 *

 * @param {object} oItem The &lt;li&gt; element item with which to update the value

 * @private

 */

YAHOO.widget.AutoComplete.prototype._updateValue = function(oItem) {

    var oTextbox = this._oTextbox;

    var sDelimChar = (this.delimChar) ? this.delimChar[0] : null;

    var sSavedQuery = this._sSavedQuery;

    var sResultKey = oItem._sResultKey;

    oTextbox.focus();



    // First clear text field

    oTextbox.value = "";

    // Grab data to put into text field

    if(sDelimChar) {

        if(sSavedQuery) {

            oTextbox.value = sSavedQuery;

        }

        oTextbox.value += sResultKey + sDelimChar;

        if(sDelimChar != " ") {

            oTextbox.value += " ";

        }

    }

    else { oTextbox.value = sResultKey; }



    // scroll to bottom of textarea if necessary

    if(oTextbox.type == "textarea") {

        oTextbox.scrollTop = oTextbox.scrollHeight;

    }

    // move cursor to end

    var end = oTextbox.value.length;

    this._selectText(oTextbox,end,end);



    this._oCurItem = oItem;

};



/**

 * Selects a result item from the container

 *

 * @param {object} oItem The selected &lt;li&gt; element item

 * @private

 */

YAHOO.widget.AutoComplete.prototype._selectItem = function(oItem) {

    this._bItemSelected = true;

    this._updateValue(oItem);

    this.itemSelectEvent.fire(this, oItem);

    //YAHOO.log(this.getName() + " selected item " + oItem.id);

    this._clearList();

};



/**

 * For values updated by type-ahead, the right arrow key jumps to the end

 * of the textbox, otherwise the container is closed.

 *

 * @private

 */

YAHOO.widget.AutoComplete.prototype._jumpSelection = function() {

    if(!this.typeAhead) {

        return;

    }

    else {

        this._clearList();

    }

};



/**

 * Triggered by up and down arrow keys, changes the current highlighted

 * &lt;li&gt; element item. Scrolls container if necessary.

 *

 * @param {number} nKeyCode Code of key pressed

 * @private

 */

YAHOO.widget.AutoComplete.prototype._moveSelection = function(nKeyCode) {

    if(this._bContainerOpen) {

        // determine current item's id number

        var oCurItem = this._oCurItem;

        var nCurItemIndex = -1;



        if (oCurItem) {

            nCurItemIndex = oCurItem._nItemIndex;

        }



        var nNewItemIndex = (nKeyCode == 40) ?

                (nCurItemIndex + 1) : (nCurItemIndex - 1);



        // out of bounds

        if (nNewItemIndex < -2 || nNewItemIndex >= this._nDisplayedItems) {

            return;

        }



        if (oCurItem) {

            // Unhighlight current item

            this._toggleHighlight(oCurItem, 'mouseout');

            this.itemArrowFromEvent.fire(this, oCurItem);

            //YAHOO.log(this.getName() + " arrowed from " + oCurItem.id);



        }

        if (nNewItemIndex == -1) {

           // go back to query (remove type-ahead string)

            if(this.delimChar && this._sSavedQuery) {

                if (!this._textMatchesOption()) {

                    this._oTextbox.value = this._sSavedQuery;

                }

                else {

                    this._oTextbox.value = this._sSavedQuery + this._sCurQuery;

                }

            }

            else {

                this._oTextbox.value = this._sCurQuery;

            }

            this._oCurItem = null;

            return;

        }

        if (nNewItemIndex == -2) {

            // close container

            this._clearList();

            return;

        }



        var oNewItem = document.getElementById(this._sName + "item" + nNewItemIndex);



        // Scroll the container if necessary

        if((YAHOO.util.Dom.getStyle(this._oContainer,"overflow") == "auto") &&

        (nNewItemIndex > -1) && (nNewItemIndex < this._nDisplayedItems)) {

            // User is keying down

            if(nKeyCode == 40) {

                // Bottom of selected item is below scroll area...

                if((oNewItem.offsetTop+oNewItem.offsetHeight) > (this._oContainer.scrollTop + this._oContainer.offsetHeight)) {

                    // Set bottom of scroll area to bottom of selected item

                    this._oContainer.scrollTop = (oNewItem.offsetTop+oNewItem.offsetHeight) - this._oContainer.offsetHeight;

                }

                // Bottom of selected item is above scroll area...

                else if((oNewItem.offsetTop+oNewItem.offsetHeight) < this._oContainer.scrollTop) {

                    // Set top of selected item to top of scroll area

                    this._oContainer.scrollTop = oNewItem.offsetTop;



                }

            }

            // User is keying up

            else {

                // Top of selected item is above scroll area

                if(oNewItem.offsetTop < this._oContainer.scrollTop) {

                    // Set top of scroll area to top of selected item

                    this._oContainer.scrollTop = oNewItem.offsetTop;

                }

                // Top of selected item is below scroll area

                else if(oNewItem.offsetTop > (this._oContainer.scrollTop + this._oContainer.offsetHeight)) {

                    // Set bottom of selected item to bottom of scroll area

                    this._oContainer.scrollTop = (oNewItem.offsetTop+oNewItem.offsetHeight) - this._oContainer.offsetHeight;

                }

            }

        }



        this._toggleHighlight(oNewItem, 'mouseover');

        this.itemArrowToEvent.fire(this, oNewItem);

        //YAHOO.log(this.getName() + " arrowed to " + oNewItem.id);

        if(this.typeAhead) {

            this._updateValue(oNewItem);

        }

    }

};