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✏️ Editing: yui2-paginator-debug.js

YUI.add('yui2-paginator', function(Y) {
    var YAHOO    = Y.YUI2;
    /*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
(function () {
/**
 * The Paginator widget provides a set of controls to navigate through paged
 * data.
 *
 * @module paginator
 * @uses YAHOO.util.EventProvider
 * @uses YAHOO.util.AttributeProvider
 */

var Dom        = YAHOO.util.Dom,
    lang       = YAHOO.lang,
    isObject   = lang.isObject,
    isFunction = lang.isFunction,
    isArray    = lang.isArray,
    isString   = lang.isString;

/**
 * Instantiate a Paginator, passing a configuration object to the contructor.
 * The configuration object should contain the following properties:
 * <ul>
 * <li>rowsPerPage : n (int)</li>
 * <li>totalRecords : n (int or Paginator.VALUE_UNLIMITED)</li>
 * <li>containers : id | el | arr (HTMLElement reference, its id, or an array of either)</li>
 * </ul>
 *
 * @namespace YAHOO.widget
 * @class Paginator
 * @constructor
 * @param config {Object} Object literal to set instance and ui component
 * configuration.
 */
function Paginator(config) {
 var UNLIMITED = Paginator.VALUE_UNLIMITED,
 attrib, initialPage, records, perPage, startIndex;

config = isObject(config) ? config : {};

this.initConfig();

this.initEvents();

// Set the basic config keys first
    this.set('rowsPerPage',config.rowsPerPage,true);
    if (Paginator.isNumeric(config.totalRecords)) {
        this.set('totalRecords',config.totalRecords,true);
    }
    
    this.initUIComponents();

// Update the other config values
    for (attrib in config) {
        if (config.hasOwnProperty(attrib)) {
            this.set(attrib,config[attrib],true);
        }
    }

// Calculate the initial record offset
 initialPage = this.get('initialPage');
 records = this.get('totalRecords');
 perPage = this.get('rowsPerPage');
 if (initialPage > 1 && perPage !== UNLIMITED) {
 startIndex = (initialPage - 1) * perPage;
 if (records === UNLIMITED || startIndex < records) {
 this.set('recordOffset',startIndex,true);
 }
 }
}

// Static members
lang.augmentObject(Paginator, {
    /**
     * Incrementing index used to give instances unique ids.
     * @static
     * @property Paginator.id
     * @type number
     * @private
     */
    id : 0,

/**
     * Base of id strings used for ui components.
     * @static
     * @property Paginator.ID_BASE
     * @type string
     * @private
     */
    ID_BASE : 'yui-pg',

/**
     * Used to identify unset, optional configurations, or used explicitly in
     * the case of totalRecords to indicate unlimited pagination.
     * @static
     * @property Paginator.VALUE_UNLIMITED
     * @type number
     * @final
     */
    VALUE_UNLIMITED : -1,

/**
     * Default template used by Paginator instances.  Update this if you want
     * all new Paginators to use a different default template.
     * @static
     * @property Paginator.TEMPLATE_DEFAULT
     * @type string
     */
    TEMPLATE_DEFAULT : "{FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}",

/**
     * Common alternate pagination format, including page links, links for
     * previous, next, first and last pages as well as a rows-per-page
     * dropdown.  Offered as a convenience.
     * @static
     * @property Paginator.TEMPLATE_ROWS_PER_PAGE
     * @type string
     */
    TEMPLATE_ROWS_PER_PAGE : "{FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}",

/**
     * Storage object for UI Components
     * @static
     * @property Paginator.ui
     */
    ui : {},

/**
     * Similar to YAHOO.lang.isNumber, but allows numeric strings.  This is
     * is used for attribute validation in conjunction with getters that return
     * numbers.
     *
     * @method Paginator.isNumeric
     * @param v {Number|String} value to be checked for number or numeric string
     * @returns {Boolean} true if the input is coercable into a finite number
     * @static
     */
    isNumeric : function (v) {
        return isFinite(+v);
    },

/**
     * Return a number or null from input
     *
     * @method Paginator.toNumber
     * @param n {Number|String} a number or numeric string
     * @return Number
     * @static
     */
    toNumber : function (n) {
        return isFinite(+n) ? +n : null;
    }

},true);

// Instance members and methods
Paginator.prototype = {

// Instance members

/**
     * Array of nodes in which to render pagination controls.  This is set via
     * the &quot;containers&quot; attribute.
     * @property _containers
     * @type Array(HTMLElement)
     * @private
     */
    _containers : [],

/**
     * Flag used to indicate multiple attributes are being updated via setState
     * @property _batch
     * @type boolean
     * @protected
     */
    _batch : false,

/**
     * Used by setState to indicate when a page change has occurred
     * @property _pageChanged
     * @type boolean
     * @protected
     */
    _pageChanged : false,

/**
     * Temporary state cache used by setState to keep track of the previous
     * state for eventual pageChange event firing
     * @property _state
     * @type Object
     * @protected
     */
    _state : null,

// Instance methods

/**
     * Initialize the Paginator's attributes (see YAHOO.util.Element class
     * AttributeProvider).
     * @method initConfig
     * @private
     */
    initConfig : function () {

var UNLIMITED = Paginator.VALUE_UNLIMITED;

/**
         * REQUIRED. Number of records constituting a &quot;page&quot;
         * @attribute rowsPerPage
         * @type integer
         */
        this.setAttributeConfig('rowsPerPage', {
            value     : 0,
            validator : Paginator.isNumeric,
            setter    : Paginator.toNumber
        });

/**
 * REQUIRED. Node references or ids of nodes in which to render the
 * pagination controls.
 * @attribute containers
 * @type {string|HTMLElement|Array(string|HTMLElement)}
 */
 this.setAttributeConfig('containers', {
 value : null,
 validator : function (val) {
 if (!isArray(val)) {
 val = [val];
 }
 for (var i = 0, len = val.length; i < len; ++i) {
 if (isString(val[i]) || 
 (isObject(val[i]) && val[i].nodeType === 1)) {
 continue;
 }
 return false;
 }
 return true;
 },
 method : function (val) {
 val = Dom.get(val);
 if (!isArray(val)) {
 val = [val];
 }
 this._containers = val;
 }
 });

/**
         * Total number of records to paginate through
         * @attribute totalRecords
         * @type integer
         * @default 0
         */
        this.setAttributeConfig('totalRecords', {
            value     : 0,
            validator : Paginator.isNumeric,
            setter    : Paginator.toNumber
        });

/**
         * Zero based index of the record considered first on the current page.
         * For page based interactions, don't modify this attribute directly;
         * use setPage(n).
         * @attribute recordOffset
         * @type integer
         * @default 0
         */
        this.setAttributeConfig('recordOffset', {
            value     : 0,
            validator : function (val) {
                var total = this.get('totalRecords');
                if (Paginator.isNumeric(val)) {
                    val = +val;
                    return total === UNLIMITED || total > val ||
                           (total === 0 && val === 0);
                }

return false;
            },
            setter    : Paginator.toNumber
        });

/**
         * Page to display on initial paint
         * @attribute initialPage
         * @type integer
         * @default 1
         */
        this.setAttributeConfig('initialPage', {
            value     : 1,
            validator : Paginator.isNumeric,
            setter    : Paginator.toNumber
        });

/**
         * Template used to render controls.  The string will be used as
         * innerHTML on all specified container nodes.  Bracketed keys
         * (e.g. {pageLinks}) in the string will be replaced with an instance
         * of the so named ui component.
         * @see Paginator.TEMPLATE_DEFAULT
         * @see Paginator.TEMPLATE_ROWS_PER_PAGE
         * @attribute template
         * @type string
         */
        this.setAttributeConfig('template', {
            value : Paginator.TEMPLATE_DEFAULT,
            validator : isString
        });

/**
         * Class assigned to the element(s) containing pagination controls.
         * @attribute containerClass
         * @type string
         * @default 'yui-pg-container'
         */
        this.setAttributeConfig('containerClass', {
            value : 'yui-pg-container',
            validator : isString
        });

/**
         * Display pagination controls even when there is only one page.  Set
         * to false to forgo rendering and/or hide the containers when there
         * is only one page of data.  Note if you are using the rowsPerPage
         * dropdown ui component, visibility will be maintained as long as the
         * number of records exceeds the smallest page size.
         * @attribute alwaysVisible
         * @type boolean
         * @default true
         */
        this.setAttributeConfig('alwaysVisible', {
            value : true,
            validator : lang.isBoolean
        });

/**
         * Update the UI immediately upon interaction.  If false, changeRequest
         * subscribers or other external code will need to explicitly set the
         * new values in the paginator to trigger repaint.
         * @attribute updateOnChange
         * @type boolean
         * @default false
         * @deprecated use changeRequest listener that calls setState
         */
        this.setAttributeConfig('updateOnChange', {
            value     : false,
            validator : lang.isBoolean
        });

// Read only attributes

/**
         * Unique id assigned to this instance
         * @attribute id
         * @type integer
         * @final
         */
        this.setAttributeConfig('id', {
            value    : Paginator.id++,
            readOnly : true
        });

/**
         * Indicator of whether the DOM nodes have been initially created
         * @attribute rendered
         * @type boolean
         * @final
         */
        this.setAttributeConfig('rendered', {
            value    : false,
            readOnly : true
        });

/**
     * Initialize registered ui components onto this instance.
     * @method initUIComponents
     * @private
     */
    initUIComponents : function () {
        var ui = Paginator.ui,
            name,UIComp;
        for (name in ui) {
            if (ui.hasOwnProperty(name)) {
                UIComp = ui[name];
                if (isObject(UIComp) && isFunction(UIComp.init)) {
                    UIComp.init(this);
                }
            }
        }
    },

/**
     * Initialize this instance's CustomEvents.
     * @method initEvents
     * @private
     */
    initEvents : function () {
        /**
         * Event fired when the Paginator is initially rendered
         * @event render
         */
        this.createEvent('render');

/**
         * Event fired when the Paginator is initially rendered
         * @event rendered
         * @deprecated use render event
         */
        this.createEvent('rendered'); // backward compatibility

/**
 * Event fired when a change in pagination values is requested,
 * either by interacting with the various ui components or via the
 * setStartIndex(n) etc APIs.
 * Subscribers will receive the proposed state as the first parameter.
 * The proposed state object will contain the following keys:
 * <ul>
 * <li>paginator - the Paginator instance</li>
 * <li>page</li>
 * <li>totalRecords</li>
 * <li>recordOffset - index of the first record on the new page</li>
 * <li>rowsPerPage</li>
 * <li>records - array containing [start index, end index] for the records on the new page</li>
 * <li>before - object literal with all these keys for the current state</li>
 * </ul>
 * @event changeRequest
 */
 this.createEvent('changeRequest');

/**
         * Event fired when attribute changes have resulted in the calculated
         * current page changing.
         * @event pageChange
         */
        this.createEvent('pageChange');

/**
         * Event that fires before the destroy event.
         * @event beforeDestroy
         */
        this.createEvent('beforeDestroy');

/**
         * Event used to trigger cleanup of ui components
         * @event destroy
         */
        this.createEvent('destroy');

this._selfSubscribe();
    },

/**
     * Subscribes to instance attribute change events to automate certain
     * behaviors.
     * @method _selfSubscribe
     * @protected
     */
    _selfSubscribe : function () {
        // Listen for changes to totalRecords and alwaysVisible 
        this.subscribe('totalRecordsChange',this.updateVisibility,this,true);
        this.subscribe('alwaysVisibleChange',this.updateVisibility,this,true);

// Fire the pageChange event when appropriate
        this.subscribe('totalRecordsChange',this._handleStateChange,this,true);
        this.subscribe('recordOffsetChange',this._handleStateChange,this,true);
        this.subscribe('rowsPerPageChange',this._handleStateChange,this,true);

// Update recordOffset when totalRecords is reduced below
        this.subscribe('totalRecordsChange',this._syncRecordOffset,this,true);
    },

/**
     * Sets recordOffset to the starting index of the previous page when
     * totalRecords is reduced below the current recordOffset.
     * @method _syncRecordOffset
     * @param e {Event} totalRecordsChange event
     * @protected
     */
    _syncRecordOffset : function (e) {
        var v = e.newValue,rpp,state;
        if (e.prevValue !== v) {
            if (v !== Paginator.VALUE_UNLIMITED) {
                rpp = this.get('rowsPerPage');

if (rpp && this.get('recordOffset') >= v) {
                    state = this.getState({
                        totalRecords : e.prevValue,
                        recordOffset : this.get('recordOffset')
                    });

this.set('recordOffset', state.before.recordOffset);
                    this._firePageChange(state);
                }
            }
        }
    },

/**
     * Fires the pageChange event when the state attributes have changed in
     * such a way as to locate the current recordOffset on a new page.
     * @method _handleStateChange
     * @param e {Event} the attribute change event
     * @protected
     */
    _handleStateChange : function (e) {
        if (e.prevValue !== e.newValue) {
            var change = this._state || {},
                state;

change[e.type.replace(/Change$/,'')] = e.prevValue;
            state = this.getState(change);

if (state.page !== state.before.page) {
                if (this._batch) {
                    this._pageChanged = true;
                } else {
                    this._firePageChange(state);
                }
            }
        }
    },

/**
     * Fires a pageChange event in the form of a standard attribute change
     * event with additional properties prevState and newState.
     * @method _firePageChange
     * @param state {Object} the result of getState(oldState)
     * @protected
     */
    _firePageChange : function (state) {
        if (isObject(state)) {
            var current = state.before;
            delete state.before;
            this.fireEvent('pageChange',{
                type      : 'pageChange',
                prevValue : state.page,
                newValue  : current.page,
                prevState : state,
                newState  : current
            });
        }
    },

/**
     * Render the pagination controls per the format attribute into the
     * specified container nodes.
     * @method render
     * @return the Paginator instance
     * @chainable
     */
    render : function () {
        if (this.get('rendered')) {
            return this;
        }

var template = this.get('template'),
            state    = this.getState(),
            // ex. yui-pg0-1 (first paginator, second container)
            id_base  = Paginator.ID_BASE + this.get('id') + '-',
            i, len;

// Assemble the containers, keeping them hidden
 for (i = 0, len = this._containers.length; i < len; ++i) {
 this._renderTemplate(this._containers[i],template,id_base+i,true);
 }

// Show the containers if appropriate
        this.updateVisibility();

// Set render attribute manually to support its readOnly contract
        if (this._containers.length) {
            this.setAttributeConfig('rendered', { value: true });

this.fireEvent('render', state);
            // For backward compatibility
            this.fireEvent('rendered', state);
        }

return this;
    },

/**
     * Creates the individual ui components and renders them into a container.
     *
     * @method _renderTemplate
     * @param container {HTMLElement} where to add the ui components
     * @param template {String} the template to use as a guide for rendering
     * @param id_base {String} id base for the container's ui components
     * @param hide {Boolean} leave the container hidden after assembly
     * @protected
     */
    _renderTemplate : function (container, template, id_base, hide) {
        var containerClass = this.get('containerClass'),
            markers, i, len;

if (!container) {
            return;
        }

// Hide the container while its contents are rendered
        Dom.setStyle(container,'display','none');

Dom.addClass(container, containerClass);

// Place the template innerHTML, adding marker spans to the template
 // html to indicate drop zones for ui components
 container.innerHTML = template.replace(/\{([a-z0-9_ \-]+)\}/gi,
 '');

// Replace each marker with the ui component's render() output
        markers = Dom.getElementsByClassName('yui-pg-ui','span',container);

for (i = 0, len = markers.length; i < len; ++i) {
 this.renderUIComponent(markers[i], id_base);
 }

if (!hide) {
            // Show the container allowing page reflow
            Dom.setStyle(container,'display','');
        }
    },

/**
     * Replaces a marker node with a rendered UI component, determined by the
     * yui-pg-ui-(UI component class name) in the marker's className. e.g.
     * yui-pg-ui-PageLinks => new YAHOO.widget.Paginator.ui.PageLinks(this)
     *
     * @method renderUIComponent
     * @param marker {HTMLElement} the marker node to replace
     * @param id_base {String} string base the component's generated id
     * @return the Paginator instance
     * @chainable
     */
    renderUIComponent : function (marker, id_base) {
        var par    = marker.parentNode,
            name   = /yui-pg-ui-(\w+)/.exec(marker.className),
            UIComp = name && Paginator.ui[name[1]],
            comp;

if (isFunction(UIComp)) {
            comp = new UIComp(this);
            if (isFunction(comp.render)) {
                par.replaceChild(comp.render(id_base),marker);
            }
        }

return this;
    },

/**
     * Removes controls from the page and unhooks events.
     * @method destroy
     */
    destroy : function () {
        this.fireEvent('beforeDestroy');
        this.fireEvent('destroy');

this.setAttributeConfig('rendered',{value:false});
        this.unsubscribeAll();
    },

/**
     * Hides the containers if there is only one page of data and attribute
     * alwaysVisible is false.  Conversely, it displays the containers if either
     * there is more than one page worth of data or alwaysVisible is turned on.
     * @method updateVisibility
     */
    updateVisibility : function (e) {
        var alwaysVisible = this.get('alwaysVisible'),
            totalRecords, visible, rpp, rppOptions, i, len, opt;

if (!e || e.type === 'alwaysVisibleChange' || !alwaysVisible) {
            totalRecords = this.get('totalRecords');
            visible      = true;
            rpp          = this.get('rowsPerPage');
            rppOptions   = this.get('rowsPerPageOptions');

if (isArray(rppOptions)) {
 for (i = 0, len = rppOptions.length; i < len; ++i) {
 opt = rppOptions[i];
 // account for value 'all'
 if (lang.isNumber(opt || opt.value)) {
 rpp = Math.min(rpp, (opt.value || opt));
 }
 }
 }

if (totalRecords !== Paginator.VALUE_UNLIMITED &&
 totalRecords <= rpp) {
 visible = false;
 }

visible = visible || alwaysVisible;

for (i = 0, len = this._containers.length; i < len; ++i) {
 Dom.setStyle(this._containers[i],'display',
 visible ? '' : 'none');
 }
 }
 },

/**
     * Get the configured container nodes
     * @method getContainerNodes
     * @return {Array} array of HTMLElement nodes
     */
    getContainerNodes : function () {
        return this._containers;
    },

/**
     * Get the total number of pages in the data set according to the current
     * rowsPerPage and totalRecords values.  If totalRecords is not set, or
     * set to YAHOO.widget.Paginator.VALUE_UNLIMITED, returns
     * YAHOO.widget.Paginator.VALUE_UNLIMITED.
     * @method getTotalPages
     * @return {number}
     */
    getTotalPages : function () {
        var records = this.get('totalRecords'),
            perPage = this.get('rowsPerPage');

// rowsPerPage not set.  Can't calculate
        if (!perPage) {
            return null;
        }

if (records === Paginator.VALUE_UNLIMITED) {
            return Paginator.VALUE_UNLIMITED;
        }

return Math.ceil(records/perPage);
    },

/**
 * Does the requested page have any records?
 * @method hasPage
 * @param page {number} the page in question
 * @return {boolean}
 */
 hasPage : function (page) {
 if (!lang.isNumber(page) || page < 1) {
 return false;
 }

var totalPages = this.getTotalPages();

return (totalPages === Paginator.VALUE_UNLIMITED || totalPages >= page);
    },

/**
     * Get the page number corresponding to the current record offset.
     * @method getCurrentPage
     * @return {number}
     */
    getCurrentPage : function () {
        var perPage = this.get('rowsPerPage');
        if (!perPage || !this.get('totalRecords')) {
            return 0;
        }
        return Math.floor(this.get('recordOffset') / perPage) + 1;
    },

/**
     * Are there records on the next page?
     * @method hasNextPage
     * @return {boolean}
     */
    hasNextPage : function () {
        var currentPage = this.getCurrentPage(),
            totalPages  = this.getTotalPages();

return currentPage && (totalPages === Paginator.VALUE_UNLIMITED || currentPage < totalPages);
 },

/**
     * Get the page number of the next page, or null if the current page is the
     * last page.
     * @method getNextPage
     * @return {number}
     */
    getNextPage : function () {
        return this.hasNextPage() ? this.getCurrentPage() + 1 : null;
    },

/**
     * Is there a page before the current page?
     * @method hasPreviousPage
     * @return {boolean}
     */
    hasPreviousPage : function () {
        return (this.getCurrentPage() > 1);
    },

/**
     * Get the page number of the previous page, or null if the current page
     * is the first page.
     * @method getPreviousPage
     * @return {number}
     */
    getPreviousPage : function () {
        return (this.hasPreviousPage() ? this.getCurrentPage() - 1 : 1);
    },

/**
     * Get the start and end record indexes of the specified page.
     * @method getPageRecords
     * @param page {number} (optional) The page (current page if not specified)
     * @return {Array} [start_index, end_index]
     */
    getPageRecords : function (page) {
        if (!lang.isNumber(page)) {
            page = this.getCurrentPage();
        }

var perPage = this.get('rowsPerPage'),
            records = this.get('totalRecords'),
            start, end;

if (!page || !perPage) {
            return null;
        }

start = (page - 1) * perPage;
        if (records !== Paginator.VALUE_UNLIMITED) {
            if (start >= records) {
                return null;
            }
            end = Math.min(start + perPage, records) - 1;
        } else {
            end = start + perPage - 1;
        }

return [start,end];
    },

/**
     * Set the current page to the provided page number if possible.
     * @method setPage
     * @param newPage {number} the new page number
     * @param silent {boolean} whether to forcibly avoid firing the
     * changeRequest event
     */
    setPage : function (page,silent) {
        if (this.hasPage(page) && page !== this.getCurrentPage()) {
            if (this.get('updateOnChange') || silent) {
                this.set('recordOffset', (page - 1) * this.get('rowsPerPage'));
            } else {
                this.fireEvent('changeRequest',this.getState({'page':page}));
            }
        }
    },

/**
     * Get the number of rows per page.
     * @method getRowsPerPage
     * @return {number} the current setting of the rowsPerPage attribute
     */
    getRowsPerPage : function () {
        return this.get('rowsPerPage');
    },

/**
     * Set the number of rows per page.
     * @method setRowsPerPage
     * @param rpp {number} the new number of rows per page
     * @param silent {boolean} whether to forcibly avoid firing the
     * changeRequest event
     */
    setRowsPerPage : function (rpp,silent) {
        if (Paginator.isNumeric(rpp) && +rpp > 0 &&
            +rpp !== this.get('rowsPerPage')) {
            if (this.get('updateOnChange') || silent) {
                this.set('rowsPerPage',rpp);
            } else {
                this.fireEvent('changeRequest',
                    this.getState({'rowsPerPage':+rpp}));
            }
        }
    },

/**
     * Get the total number of records.
     * @method getTotalRecords
     * @return {number} the current setting of totalRecords attribute
     */
    getTotalRecords : function () {
        return this.get('totalRecords');
    },

/**
     * Set the total number of records.
     * @method setTotalRecords
     * @param total {number} the new total number of records
     * @param silent {boolean} whether to forcibly avoid firing the changeRequest event
     */
    setTotalRecords : function (total,silent) {
        if (Paginator.isNumeric(total) && +total >= 0 &&
            +total !== this.get('totalRecords')) {
            if (this.get('updateOnChange') || silent) {
                this.set('totalRecords',total);
            } else {
                this.fireEvent('changeRequest',
                    this.getState({'totalRecords':+total}));
            }
        }
    },

/**
     * Get the index of the first record on the current page
     * @method getStartIndex
     * @return {number} the index of the first record on the current page
     */
    getStartIndex : function () {
        return this.get('recordOffset');
    },

/**
     * Move the record offset to a new starting index.  This will likely cause
     * the calculated current page to change.  You should probably use setPage.
     * @method setStartIndex
     * @param offset {number} the new record offset
     * @param silent {boolean} whether to forcibly avoid firing the changeRequest event
     */
    setStartIndex : function (offset,silent) {
        if (Paginator.isNumeric(offset) && +offset >= 0 &&
            +offset !== this.get('recordOffset')) {
            if (this.get('updateOnChange') || silent) {
                this.set('recordOffset',offset);
            } else {
                this.fireEvent('changeRequest',
                    this.getState({'recordOffset':+offset}));
            }
        }
    },

/**
 * Get an object literal describing the current state of the paginator. If
 * an object literal of proposed values is passed, the proposed state will
 * be returned as an object literal with the following keys:
 * <ul>
 * <li>paginator - instance of the Paginator</li>
 * <li>page - number</li>
 * <li>totalRecords - number</li>
 * <li>recordOffset - number</li>
 * <li>rowsPerPage - number</li>
 * <li>records - [ start_index, end_index ]</li>
 * <li>before - (OPTIONAL) { state object literal for current state }</li>
 * </ul>
 * @method getState
 * @return {object}
 * @param changes {object} OPTIONAL object literal with proposed values
 * Supported change keys include:
 * <ul>
 * <li>rowsPerPage</li>
 * <li>totalRecords</li>
 * <li>recordOffset OR</li>
 * <li>page</li>
 * </ul>
 */
 getState : function (changes) {
 var UNLIMITED = Paginator.VALUE_UNLIMITED,
 M = Math, max = M.max, ceil = M.ceil,
 currentState, state, offset;

currentState = {
            paginator    : this,
            totalRecords : this.get('totalRecords'),
            rowsPerPage  : this.get('rowsPerPage'),
            records      : this.getPageRecords()
        };
        currentState.recordOffset = normalizeOffset(
                                        this.get('recordOffset'),
                                        currentState.totalRecords,
                                        currentState.rowsPerPage);
        currentState.page = ceil(currentState.recordOffset /
                                 currentState.rowsPerPage) + 1;

if (!changes) {
            return currentState;
        }

state = {
            paginator    : this,
            before       : currentState,

rowsPerPage  : changes.rowsPerPage || currentState.rowsPerPage,
            totalRecords : (Paginator.isNumeric(changes.totalRecords) ?
                                max(changes.totalRecords,UNLIMITED) :
                                +currentState.totalRecords)
        };

if (state.totalRecords === 0) {
            state.recordOffset =
            state.page         = 0;
        } else {
            offset = Paginator.isNumeric(changes.page) ?
                        (changes.page - 1) * state.rowsPerPage :
                        Paginator.isNumeric(changes.recordOffset) ?
                            +changes.recordOffset :
                            currentState.recordOffset;

state.recordOffset = normalizeOffset(offset,
                                    state.totalRecords,
                                    state.rowsPerPage);

state.page = ceil(state.recordOffset / state.rowsPerPage) + 1;
        }

state.records = [ state.recordOffset,
                          state.recordOffset + state.rowsPerPage - 1 ];

// limit upper index to totalRecords - 1
 if (state.totalRecords !== UNLIMITED &&
 state.recordOffset < state.totalRecords && state.records &&
 state.records[1] > state.totalRecords - 1) {
 state.records[1] = state.totalRecords - 1;
 }

return state;
    },

/**
     * Convenience method to facilitate setting state attributes rowsPerPage,
     * totalRecords, recordOffset in batch.  Also supports calculating
     * recordOffset from state.page if state.recordOffset is not provided.
     * Fires only a single pageChange event, if appropriate.
     * This will not fire a changeRequest event.
     * @method setState
     * @param state {Object} Object literal of attribute:value pairs to set
     */
    setState : function (state) {
        if (isObject(state)) {
            // get flux state based on current state with before state as well
            this._state = this.getState({});

// use just the state props from the input obj
            state = {
                page         : state.page,
                rowsPerPage  : state.rowsPerPage,
                totalRecords : state.totalRecords,
                recordOffset : state.recordOffset
            };

// calculate recordOffset from page if recordOffset not specified.
            // not using lang.isNumber for support of numeric strings
            if (state.page && state.recordOffset === undefined) {
                state.recordOffset = (state.page - 1) *
                    (state.rowsPerPage || this.get('rowsPerPage'));
            }

this._batch = true;
            this._pageChanged = false;

for (var k in state) {
                if (state.hasOwnProperty(k) && this._configs.hasOwnProperty(k)) {
                    this.set(k,state[k]);
                }
            }

this._batch = false;
            
            if (this._pageChanged) {
                this._pageChanged = false;

this._firePageChange(this.getState(this._state));
            }
        }
    }
};

lang.augmentProto(Paginator, YAHOO.util.AttributeProvider);

YAHOO.widget.Paginator = Paginator;
})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the textual report of current pagination status.
 * E.g. "Now viewing page 1 of 13".
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class CurrentPageReport
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.CurrentPageReport = function (p) {
    this.paginator = p;

p.subscribe('recordOffsetChange', this.update,this,true);
    p.subscribe('rowsPerPageChange', this.update,this,true);
    p.subscribe('totalRecordsChange',this.update,this,true);
    p.subscribe('pageReportTemplateChange', this.update,this,true);
    p.subscribe('destroy',this.destroy,this,true);

//TODO: make this work
    p.subscribe('pageReportClassChange', this.update,this,true);
};

/**
 * Decorates Paginator instances with new attributes. Called during
 * Paginator instantiation.
 * @method init
 * @param p {Paginator} Paginator instance to decorate
 * @static
 */
Paginator.ui.CurrentPageReport.init = function (p) {

/**
     * CSS class assigned to the span containing the info.
     * @attribute pageReportClass
     * @default 'yui-pg-current'
     */
    p.setAttributeConfig('pageReportClass', {
        value : 'yui-pg-current',
        validator : l.isString
    });

/**
     * Used as innerHTML for the span.  Place holders in the form of {name}
     * will be replaced with the so named value from the key:value map
     * generated by the function held in the pageReportValueGenerator attribute.
     * @attribute pageReportTemplate
     * @default '({currentPage} of {totalPages})'
     * @see pageReportValueGenerator attribute
     */
    p.setAttributeConfig('pageReportTemplate', {
        value : '({currentPage} of {totalPages})',
        validator : l.isString
    });

/**
 * Function to generate the value map used to populate the
 * pageReportTemplate. The function is passed the Paginator instance as a
 * parameter. The default function returns a map with the following keys:
 * <ul>
 * <li>currentPage</li>
 * <li>totalPages</li>
 * <li>startIndex</li>
 * <li>endIndex</li>
 * <li>startRecord</li>
 * <li>endRecord</li>
 * <li>totalRecords</li>
 * </ul>
 * @attribute pageReportValueGenarator
 */
 p.setAttributeConfig('pageReportValueGenerator', {
 value : function (paginator) {
 var curPage = paginator.getCurrentPage(),
 records = paginator.getPageRecords();

return {
                'currentPage' : records ? curPage : 0,
                'totalPages'  : paginator.getTotalPages(),
                'startIndex'  : records ? records[0] : 0,
                'endIndex'    : records ? records[1] : 0,
                'startRecord' : records ? records[0] + 1 : 0,
                'endRecord'   : records ? records[1] + 1 : 0,
                'totalRecords': paginator.get('totalRecords')
            };
        },
        validator : l.isFunction
    });
};

/**
 * Replace place holders in a string with the named values found in an
 * object literal.
 * @static
 * @method sprintf
 * @param template {string} The content string containing place holders
 * @param values {object} The key:value pairs used to replace the place holders
 * @return {string}
 */
Paginator.ui.CurrentPageReport.sprintf = function (template, values) {
    return template.replace(/\{([\w\s\-]+)\}/g, function (x,key) {
            return (key in values) ? values[key] : '';
        });
};

Paginator.ui.CurrentPageReport.prototype = {

/**
     * Span node containing the formatted info
     * @property span
     * @type HTMLElement
     * @private
     */
    span : null,

/**
     * Generate the span containing info formatted per the pageReportTemplate
     * attribute.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        this.span = document.createElement('span');
        this.span.className = this.paginator.get('pageReportClass');
        setId(this.span, id_base + '-page-report');
        this.update();
        
        return this.span;
    },
    
    /**
     * Regenerate the content of the span if appropriate. Calls
     * CurrentPageReport.sprintf with the value of the pageReportTemplate
     * attribute and the value map returned from pageReportValueGenerator
     * function.
     * @method update
     * @param e {CustomEvent} The calling change event
     */
    update : function (e) {
        if (e && e.prevValue === e.newValue) {
            return;
        }

this.span.innerHTML = Paginator.ui.CurrentPageReport.sprintf(
            this.paginator.get('pageReportTemplate'),
            this.paginator.get('pageReportValueGenerator')(this.paginator));
    },

/**
     * Removes the link/span node and clears event listeners
     * removal.
     * @method destroy
     * @private
     */
    destroy : function () {
        this.span.parentNode.removeChild(this.span);
        this.span = null;
    }

};

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the page links
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class PageLinks
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.PageLinks = function (p) {
    this.paginator = p;

p.subscribe('recordOffsetChange',this.update,this,true);
    p.subscribe('rowsPerPageChange',this.update,this,true);
    p.subscribe('totalRecordsChange',this.update,this,true);
    p.subscribe('pageLinksChange',   this.rebuild,this,true);
    p.subscribe('pageLinkClassChange', this.rebuild,this,true);
    p.subscribe('currentPageClassChange', this.rebuild,this,true);
    p.subscribe('destroy',this.destroy,this,true);

//TODO: Make this work
    p.subscribe('pageLinksContainerClassChange', this.rebuild,this,true);
};

/**
     * CSS class assigned to each page link/span.
     * @attribute pageLinkClass
     * @default 'yui-pg-page'
     */
    p.setAttributeConfig('pageLinkClass', {
        value : 'yui-pg-page',
        validator : l.isString
    });

/**
     * CSS class assigned to the current page span.
     * @attribute currentPageClass
     * @default 'yui-pg-current-page'
     */
    p.setAttributeConfig('currentPageClass', {
        value : 'yui-pg-current-page',
        validator : l.isString
    });

/**
     * CSS class assigned to the span containing the page links.
     * @attribute pageLinksContainerClass
     * @default 'yui-pg-pages'
     */
    p.setAttributeConfig('pageLinksContainerClass', {
        value : 'yui-pg-pages',
        validator : l.isString
    });

/**
     * Maximum number of page links to display at one time.
     * @attribute pageLinks
     * @default 10
     */
    p.setAttributeConfig('pageLinks', {
        value : 10,
        validator : Paginator.isNumeric
    });

/**
     * Function used generate the innerHTML for each page link/span.  The
     * function receives as parameters the page number and a reference to the
     * paginator object.
     * @attribute pageLabelBuilder
     * @default function (page, paginator) { return page; }
     */
    p.setAttributeConfig('pageLabelBuilder', {
        value : function (page, paginator) { return page; },
        validator : l.isFunction
    });

/**
     * Function used generate the title for each page link.  The
     * function receives as parameters the page number and a reference to the
     * paginator object.
     * @attribute pageTitleBuilder
     * @default function (page, paginator) { return page; }
     */
    p.setAttributeConfig('pageTitleBuilder', {
        value : function (page, paginator) { return "Page " + page; },
        validator : l.isFunction
    });
};

/**
 * Calculates start and end page numbers given a current page, attempting
 * to keep the current page in the middle
 * @static
 * @method calculateRange
 * @param {int} currentPage  The current page
 * @param {int} totalPages   (optional) Maximum number of pages
 * @param {int} numPages     (optional) Preferred number of pages in range
 * @return {Array} [start_page_number, end_page_number]
 */
Paginator.ui.PageLinks.calculateRange = function (currentPage,totalPages,numPages) {
    var UNLIMITED = Paginator.VALUE_UNLIMITED,
        start, end, delta;

// Either has no pages, or unlimited pages.  Show none.
    if (!currentPage || numPages === 0 || totalPages === 0 ||
        (totalPages === UNLIMITED && numPages === UNLIMITED)) {
        return [0,-1];
    }

// Limit requested pageLinks if there are fewer totalPages
    if (totalPages !== UNLIMITED) {
        numPages = numPages === UNLIMITED ?
                    totalPages :
                    Math.min(numPages,totalPages);
    }

// Determine start and end, trying to keep current in the middle
    start = Math.max(1,Math.ceil(currentPage - (numPages/2)));
    if (totalPages === UNLIMITED) {
        end = start + numPages - 1;
    } else {
        end = Math.min(totalPages, start + numPages - 1);
    }

// Adjust the start index when approaching the last page
    delta = numPages - (end - start + 1);
    start = Math.max(1, start - delta);

return [start,end];
};

Paginator.ui.PageLinks.prototype = {

/**
     * Current page
     * @property current
     * @type number
     * @private
     */
    current     : 0,

/**
     * Span node containing the page links
     * @property container
     * @type HTMLElement
     * @private
     */
    container   : null,

/**
     * Generate the nodes and return the container node containing page links
     * appropriate to the current pagination state.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        var p = this.paginator;

// Set up container
        this.container = document.createElement('span');
        setId(this.container, id_base + '-pages');
        this.container.className = p.get('pageLinksContainerClass');
        YAHOO.util.Event.on(this.container,'click',this.onClick,this,true);

// Call update, flagging a need to rebuild
        this.update({newValue : null, rebuild : true});

return this.container;
    },

/**
     * Update the links if appropriate
     * @method update
     * @param e {CustomEvent} The calling change event
     */
    update : function (e) {
        if (e && e.prevValue === e.newValue) {
            return;
        }

var p           = this.paginator,
            currentPage = p.getCurrentPage();

// Replace content if there's been a change
        if (this.current !== currentPage || !currentPage || e.rebuild) {
            var labelBuilder = p.get('pageLabelBuilder'),
                titleBuilder = p.get('pageTitleBuilder'),
                range        = Paginator.ui.PageLinks.calculateRange(
                                currentPage,
                                p.getTotalPages(),
                                p.get('pageLinks')),
                start        = range[0],
                end          = range[1],
                content      = '',
                linkTemplate,i,spanTemplate;

linkTemplate = '<a href="#" class="{class}" page="{page}" title="{title}">{label}</a>';
 spanTemplate = '{label}';
 for (i = start; i <= end; ++i) {

if (i === currentPage) {
                    content += l.substitute(spanTemplate, {
                        'class' : p.get('currentPageClass') + ' ' + p.get('pageLinkClass'),
                        'label' : labelBuilder(i,p)
                    });

} else {
                    content += l.substitute(linkTemplate, {
                        'class' : p.get('pageLinkClass'),
                        'page'  : i,
                        'label' : labelBuilder(i,p),
                        'title' : titleBuilder(i,p)
                    });
                }
            }

this.container.innerHTML = content;
        }
    },

/**
     * Force a rebuild of the page links.
     * @method rebuild
     * @param e {CustomEvent} The calling change event
     */
    rebuild     : function (e) {
        e.rebuild = true;
        this.update(e);
    },

/**
     * Removes the page links container node and clears event listeners
     * @method destroy
     * @private
     */
    destroy : function () {
        YAHOO.util.Event.purgeElement(this.container,true);
        this.container.parentNode.removeChild(this.container);
        this.container = null;
    },

/**
     * Listener for the container's onclick event.  Looks for qualifying link
     * clicks, and pulls the page number from the link's page attribute.
     * Sends link's page attribute to the Paginator's setPage method.
     * @method onClick
     * @param e {DOMEvent} The click event
     */
    onClick : function (e) {
        var t = YAHOO.util.Event.getTarget(e);
        if (t && YAHOO.util.Dom.hasClass(t,
                        this.paginator.get('pageLinkClass'))) {

YAHOO.util.Event.stopEvent(e);

this.paginator.setPage(parseInt(t.getAttribute('page'),10));
        }
    }

};

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the link to jump to the first page.
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class FirstPageLink
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.FirstPageLink = function (p) {
    this.paginator = p;

// TODO: make this work
    p.subscribe('firstPageLinkLabelChange',this.update,this,true);
    p.subscribe('firstPageLinkClassChange',this.update,this,true);
};

/**
     * Used as innerHTML for the first page link/span.
     * @attribute firstPageLinkLabel
     * @default '&lt;&lt; first'
     */
    p.setAttributeConfig('firstPageLinkLabel', {
        value : '&lt;&lt; first',
        validator : l.isString
    });

/**
     * CSS class assigned to the link/span
     * @attribute firstPageLinkClass
     * @default 'yui-pg-first'
     */
    p.setAttributeConfig('firstPageLinkClass', {
        value : 'yui-pg-first',
        validator : l.isString
    });

/**
     * Used as title for the first page link.
     * @attribute firstPageLinkTitle
     * @default 'First Page'
     */
    p.setAttributeConfig('firstPageLinkTitle', {
        value : 'First Page',
        validator : l.isString
    });
};

// Instance members and methods
Paginator.ui.FirstPageLink.prototype = {

/**
     * The currently placed HTMLElement node
     * @property current
     * @type HTMLElement
     * @private
     */
    current   : null,

/**
     * Link node
     * @property link
     * @type HTMLElement
     * @private
     */
    link      : null,

/**
     * Span node (inactive link)
     * @property span
     * @type HTMLElement
     * @private
     */
    span      : null,

/**
     * Generate the nodes and return the appropriate node given the current
     * pagination state.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        var p     = this.paginator,
            c     = p.get('firstPageLinkClass'),
            label = p.get('firstPageLinkLabel'),
            title = p.get('firstPageLinkTitle');

this.link     = document.createElement('a');
        this.span     = document.createElement('span');

setId(this.link, id_base + '-first-link');
        this.link.href      = '#';
        this.link.className = c;
        this.link.innerHTML = label;
        this.link.title     = title;
        YAHOO.util.Event.on(this.link,'click',this.onClick,this,true);

setId(this.span, id_base + '-first-span');
        this.span.className = c;
        this.span.innerHTML = label;

this.current = p.getCurrentPage() > 1 ? this.link : this.span;
        return this.current;
    },

/**
     * Swap the link and span nodes if appropriate.
     * @method update
     * @param e {CustomEvent} The calling change event
     */
    update : function (e) {
        if (e && e.prevValue === e.newValue) {
            return;
        }

/**
     * Removes the link/span node and clears event listeners
     * removal.
     * @method destroy
     * @private
     */
    destroy : function () {
        YAHOO.util.Event.purgeElement(this.link);
        this.current.parentNode.removeChild(this.current);
        this.link = this.span = null;
    },

/**
     * Listener for the link's onclick event.  Pass new value to setPage method.
     * @method onClick
     * @param e {DOMEvent} The click event
     */
    onClick : function (e) {
        YAHOO.util.Event.stopEvent(e);
        this.paginator.setPage(1);
    }
};

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the link to jump to the last page.
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class LastPageLink
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.LastPageLink = function (p) {
    this.paginator = p;

// TODO: make this work
    p.subscribe('lastPageLinkLabelChange',this.update,this,true);
    p.subscribe('lastPageLinkClassChange', this.update,this,true);
};

/**
 * Decorates Paginator instances with new attributes. Called during
 * Paginator instantiation.
 * @method init
 * @param paginator {Paginator} Paginator instance to decorate
 * @static
 */
Paginator.ui.LastPageLink.init = function (p) {

/**
     * Used as innerHTML for the last page link/span.
     * @attribute lastPageLinkLabel
     * @default 'last &gt;&gt;'
     */
    p.setAttributeConfig('lastPageLinkLabel', {
        value : 'last &gt;&gt;',
        validator : l.isString
    });

/**
     * CSS class assigned to the link/span
     * @attribute lastPageLinkClass
     * @default 'yui-pg-last'
     */
    p.setAttributeConfig('lastPageLinkClass', {
        value : 'yui-pg-last',
        validator : l.isString
    });

/**
     * Used as title for the last page link.
     * @attribute lastPageLinkTitle
     * @default 'Last Page'
     */
    p.setAttributeConfig('lastPageLinkTitle', {
        value : 'Last Page',
        validator : l.isString
    });

};

Paginator.ui.LastPageLink.prototype = {

/**
     * Currently placed HTMLElement node
     * @property current
     * @type HTMLElement
     * @private
     */
    current   : null,

/**
     * Link HTMLElement node
     * @property link
     * @type HTMLElement
     * @private
     */
    link      : null,

/**
     * Span node (inactive link)
     * @property span
     * @type HTMLElement
     * @private
     */
    span      : null,

/**
     * Empty place holder node for when the last page link is inappropriate to
     * display in any form (unlimited paging).
     * @property na
     * @type HTMLElement
     * @private
     */
    na        : null,

/**
     * Generate the nodes and return the appropriate node given the current
     * pagination state.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        var p     = this.paginator,
            c     = p.get('lastPageLinkClass'),
            label = p.get('lastPageLinkLabel'),
            last  = p.getTotalPages(),
            title = p.get('lastPageLinkTitle');

this.link = document.createElement('a');
        this.span = document.createElement('span');
        this.na   = this.span.cloneNode(false);

setId(this.link, id_base + '-last-link');
        this.link.href      = '#';
        this.link.className = c;
        this.link.innerHTML = label;
        this.link.title     = title;
        YAHOO.util.Event.on(this.link,'click',this.onClick,this,true);

setId(this.span, id_base + '-last-span');
        this.span.className = c;
        this.span.innerHTML = label;

setId(this.na, id_base + '-last-na');

switch (last) {
            case Paginator.VALUE_UNLIMITED :
                    this.current = this.na; break;
            case p.getCurrentPage() :
                    this.current = this.span; break;
            default :
                    this.current = this.link;
        }

return this.current;
    },

/**
     * Swap the link, span, and na nodes if appropriate.
     * @method update
     * @param e {CustomEvent} The calling change event (ignored)
     */
    update : function (e) {
        if (e && e.prevValue === e.newValue) {
            return;
        }

var par   = this.current ? this.current.parentNode : null,
            after = this.link;

if (par) {
            switch (this.paginator.getTotalPages()) {
                case Paginator.VALUE_UNLIMITED :
                        after = this.na; break;
                case this.paginator.getCurrentPage() :
                        after = this.span; break;
            }

if (this.current !== after) {
                par.replaceChild(after,this.current);
                this.current = after;
            }
        }
    },

/**
     * Removes the link/span node and clears event listeners
     * @method destroy
     * @private
     */
    destroy : function () {
        YAHOO.util.Event.purgeElement(this.link);
        this.current.parentNode.removeChild(this.current);
        this.link = this.span = null;
    },

/**
     * Listener for the link's onclick event.  Passes to setPage method.
     * @method onClick
     * @param e {DOMEvent} The click event
     */
    onClick : function (e) {
        YAHOO.util.Event.stopEvent(e);
        this.paginator.setPage(this.paginator.getTotalPages());
    }
};

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the link to jump to the next page.
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class NextPageLink
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.NextPageLink = function (p) {
    this.paginator = p;

// TODO: make this work
    p.subscribe('nextPageLinkLabelChange', this.update,this,true);
    p.subscribe('nextPageLinkClassChange', this.update,this,true);
};

/**
     * Used as innerHTML for the next page link/span.
     * @attribute nextPageLinkLabel
     * @default 'next &gt;'
     */
    p.setAttributeConfig('nextPageLinkLabel', {
        value : 'next &gt;',
        validator : l.isString
    });

/**
     * CSS class assigned to the link/span
     * @attribute nextPageLinkClass
     * @default 'yui-pg-next'
     */
    p.setAttributeConfig('nextPageLinkClass', {
        value : 'yui-pg-next',
        validator : l.isString
    });

/**
     * Used as title for the next page link.
     * @attribute nextPageLinkTitle
     * @default 'Next Page'
     */
    p.setAttributeConfig('nextPageLinkTitle', {
        value : 'Next Page',
        validator : l.isString
    });

};

Paginator.ui.NextPageLink.prototype = {

/**
     * Currently placed HTMLElement node
     * @property current
     * @type HTMLElement
     * @private
     */
    current   : null,

/**
     * Link node
     * @property link
     * @type HTMLElement
     * @private
     */
    link      : null,

/**
     * Span node (inactive link)
     * @property span
     * @type HTMLElement
     * @private
     */
    span      : null,

/**
     * Generate the nodes and return the appropriate node given the current
     * pagination state.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        var p     = this.paginator,
            c     = p.get('nextPageLinkClass'),
            label = p.get('nextPageLinkLabel'),
            last  = p.getTotalPages(),
            title = p.get('nextPageLinkTitle');

this.link     = document.createElement('a');
        this.span     = document.createElement('span');

setId(this.link, id_base + '-next-link');
        this.link.href      = '#';
        this.link.className = c;
        this.link.innerHTML = label;
        this.link.title     = title;
        YAHOO.util.Event.on(this.link,'click',this.onClick,this,true);

setId(this.span, id_base + '-next-span');
        this.span.className = c;
        this.span.innerHTML = label;

this.current = p.getCurrentPage() === last ? this.span : this.link;

return this.current;
    },

var last = this.paginator.getTotalPages(),
            par  = this.current ? this.current.parentNode : null;

if (this.paginator.getCurrentPage() !== last) {
            if (par && this.current === this.span) {
                par.replaceChild(this.link,this.current);
                this.current = this.link;
            }
        } else if (this.current === this.link) {
            if (par) {
                par.replaceChild(this.span,this.current);
                this.current = this.span;
            }
        }
    },

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the link to jump to the previous page.
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class PreviousPageLink
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.PreviousPageLink = function (p) {
    this.paginator = p;

// TODO: make this work
    p.subscribe('previousPageLinkLabelChange',this.update,this,true);
    p.subscribe('previousPageLinkClassChange',this.update,this,true);
};

/**
     * Used as innerHTML for the previous page link/span.
     * @attribute previousPageLinkLabel
     * @default '&lt; prev'
     */
    p.setAttributeConfig('previousPageLinkLabel', {
        value : '&lt; prev',
        validator : l.isString
    });

/**
     * CSS class assigned to the link/span
     * @attribute previousPageLinkClass
     * @default 'yui-pg-previous'
     */
    p.setAttributeConfig('previousPageLinkClass', {
        value : 'yui-pg-previous',
        validator : l.isString
    });

/**
     * Used as title for the previous page link.
     * @attribute previousPageLinkTitle
     * @default 'Previous Page'
     */
    p.setAttributeConfig('previousPageLinkTitle', {
        value : 'Previous Page',
        validator : l.isString
    });

};

Paginator.ui.PreviousPageLink.prototype = {

/**
     * Currently placed HTMLElement node
     * @property current
     * @type HTMLElement
     * @private
     */
    current   : null,

/**
     * Link node
     * @property link
     * @type HTMLElement
     * @private
     */
    link      : null,

/**
     * Span node (inactive link)
     * @property span
     * @type HTMLElement
     * @private
     */
    span      : null,

/**
     * Generate the nodes and return the appropriate node given the current
     * pagination state.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        var p     = this.paginator,
            c     = p.get('previousPageLinkClass'),
            label = p.get('previousPageLinkLabel'),
            title = p.get('previousPageLinkTitle');

this.link     = document.createElement('a');
        this.span     = document.createElement('span');

setId(this.link, id_base + '-prev-link');
        this.link.href      = '#';
        this.link.className = c;
        this.link.innerHTML = label;
        this.link.title     = title;
        YAHOO.util.Event.on(this.link,'click',this.onClick,this,true);

setId(this.span, id_base + '-prev-span');
        this.span.className = c;
        this.span.innerHTML = label;

this.current = p.getCurrentPage() > 1 ? this.link : this.span;
        return this.current;
    },

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the rows-per-page dropdown
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class RowsPerPageDropdown
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.RowsPerPageDropdown = function (p) {
    this.paginator = p;

p.subscribe('rowsPerPageChange',this.update,this,true);
    p.subscribe('rowsPerPageOptionsChange',this.rebuild,this,true);
    p.subscribe('totalRecordsChange',this._handleTotalRecordsChange,this,true);
    p.subscribe('destroy',this.destroy,this,true);

// TODO: make this work
    p.subscribe('rowsPerPageDropdownClassChange',this.rebuild,this,true);
};

/**
 * Array of available rows-per-page sizes. Converted into select options.
 * Array values may be positive integers or object literals in the form 
 * { value : NUMBER, text : STRING }
 * @attribute rowsPerPageOptions
 * @default []
 */
 p.setAttributeConfig('rowsPerPageOptions', {
 value : [],
 validator : l.isArray
 });

/**
     * CSS class assigned to the select node
     * @attribute rowsPerPageDropdownClass
     * @default 'yui-pg-rpp-options'
     */
    p.setAttributeConfig('rowsPerPageDropdownClass', {
        value : 'yui-pg-rpp-options',
        validator : l.isString
    });
};

Paginator.ui.RowsPerPageDropdown.prototype = {

/**
     * select node
     * @property select
     * @type HTMLElement
     * @private
     */
    select  : null,

/**
     * option node for the optional All value
     *
     * @property all
     * @type HTMLElement
     * @protected
     */
    all : null,

/**
     * Generate the select and option nodes and returns the select node.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        this.select = document.createElement('select');
        setId(this.select, id_base + '-rpp');
        this.select.className = this.paginator.get('rowsPerPageDropdownClass');
        this.select.title = 'Rows per page';

YAHOO.util.Event.on(this.select,'change',this.onChange,this,true);

this.rebuild();

return this.select;
    },

/**
     * (Re)generate the select options.
     * @method rebuild
     */
    rebuild : function (e) {
        var p       = this.paginator,
            sel     = this.select,
            options = p.get('rowsPerPageOptions'),
            opt,cfg,val,i,len;

this.all = null;

for (i = 0, len = options.length; i < len; ++i) {
 cfg = options[i];
 opt = sel.options[i] ||
 sel.appendChild(document.createElement('option'));
 val = l.isValue(cfg.value) ? cfg.value : cfg;
 opt.text = l.isValue(cfg.text) ? cfg.text : cfg;

if (l.isString(val) && val.toLowerCase() === 'all') {
                this.all  = opt;
                opt.value = p.get('totalRecords');
            } else{
                opt.value = val;
            }

}

while (sel.options.length > options.length) {
            sel.removeChild(sel.firstChild);
        }

this.update();
    },

/**
     * Select the appropriate option if changed.
     * @method update
     * @param e {CustomEvent} The calling change event
     */
    update : function (e) {
        if (e && e.prevValue === e.newValue) {
            return;
        }

var rpp     = this.paginator.get('rowsPerPage')+'',
            options = this.select.options,
            i,len;

for (i = 0, len = options.length; i < len; ++i) {
 if (options[i].value === rpp) {
 options[i].selected = true;
 break;
 }
 }
 },

/**
     * Listener for the select's onchange event.  Sent to setRowsPerPage method.
     * @method onChange
     * @param e {DOMEvent} The change event
     */
    onChange : function (e) {
        this.paginator.setRowsPerPage(
                parseInt(this.select.options[this.select.selectedIndex].value,10));
    },

/**
     * Updates the all option value (and Paginator's rowsPerPage attribute if
     * necessary) in response to a change in the Paginator's totalRecords.
     *
     * @method _handleTotalRecordsChange
     * @param e {Event} attribute change event
     * @protected
     */
    _handleTotalRecordsChange : function (e) {
        if (!this.all || (e && e.prevValue === e.newValue)) {
            return;
        }

this.all.value = e.newValue;
        if (this.all.selected) {
            this.paginator.set('rowsPerPage',e.newValue);
        }
    },

/**
     * Removes the select node and clears event listeners
     * @method destroy
     * @private
     */
    destroy : function () {
        YAHOO.util.Event.purgeElement(this.select);
        this.select.parentNode.removeChild(this.select);
        this.select = null;
    }
};

})();
(function () {

var Paginator = YAHOO.widget.Paginator,
    l         = YAHOO.lang,
    setId     = YAHOO.util.Dom.generateId;

/**
 * ui Component to generate the jump-to-page dropdown
 *
 * @namespace YAHOO.widget.Paginator.ui
 * @class JumpToPageDropdown
 * @for YAHOO.widget.Paginator
 *
 * @constructor
 * @param p {Pagintor} Paginator instance to attach to
 */
Paginator.ui.JumpToPageDropdown = function (p) {
    this.paginator = p;

p.subscribe('rowsPerPageChange',this.rebuild,this,true);
    p.subscribe('rowsPerPageOptionsChange',this.rebuild,this,true);
    p.subscribe('pageChange',this.update,this,true);
    p.subscribe('totalRecordsChange',this.rebuild,this,true);
    p.subscribe('destroy',this.destroy,this,true);

};

/**
     * CSS class assigned to the select node
     * @attribute jumpToPageDropdownClass
     * @default 'yui-pg-jtp-options'
     */
    p.setAttributeConfig('jumpToPageDropdownClass', {
        value : 'yui-pg-jtp-options',
        validator : l.isString
    });
};

Paginator.ui.JumpToPageDropdown.prototype = {

/**
     * select node
     * @property select
     * @type HTMLElement
     * @private
     */
    select  : null,

/**
     * Generate the select and option nodes and returns the select node.
     * @method render
     * @param id_base {string} used to create unique ids for generated nodes
     * @return {HTMLElement}
     */
    render : function (id_base) {
        this.select = document.createElement('select');
        setId(this.select, id_base + '-jtp');
        this.select.className = this.paginator.get('jumpToPageDropdownClass');
        this.select.title = 'Jump to page';

YAHOO.util.Event.on(this.select,'change',this.onChange,this,true);

this.rebuild();

return this.select;
    },

/**
     * (Re)generate the select options.
     * @method rebuild
     */
    rebuild : function (e) {
        var p       = this.paginator,
            sel     = this.select,
            numPages = p.getTotalPages(),
            opt,i,len;

this.all = null;

for (i = 0, len = numPages; i < len; ++i ) {
 opt = sel.options[i] ||
 sel.appendChild(document.createElement('option'));

opt.innerHTML = i + 1;

opt.value = i + 1;

}

for ( i = numPages, len = sel.options.length ; i < len ; i++ ) {
 sel.removeChild(sel.lastChild);
 }

this.update();
    },

/**
     * Select the appropriate option if changed.
     * @method update
     * @param e {CustomEvent} The calling change event
     */
    update : function (e) {

if (e && e.prevValue === e.newValue) {
            return;
        }

var cp      = this.paginator.getCurrentPage()+'',
            options = this.select.options,
            i,len;

for (i = 0, len = options.length; i < len; ++i) {
 if (options[i].value === cp) {
 options[i].selected = true;
 break;
 }
 }
 },

/**
     * Listener for the select's onchange event.  Sent to setPage method.
     * @method onChange
     * @param e {DOMEvent} The change event
     */
    onChange : function (e) {
        this.paginator.setPage(
                parseInt(this.select.options[this.select.selectedIndex].value,false));
    },

})();
YAHOO.register("paginator", YAHOO.widget.Paginator, {version: "2.9.0", build: "2800"});

}, '2.9.0' ,{"requires": ["yui2-yahoo", "yui2-dom", "yui2-event", "yui2-element", "yui2-skin-sam-paginator"]});

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