    /**
     * A date picker. This class is used by the Ext.form.field.Date field to allow browsing and selection of valid
     * dates in a popup next to the field, but may also be used with other components.
     *
     * Typically you will need to implement a handler function to be notified when the user chooses a date from the picker;
     * you can register the handler using the {@link #select} event, or by implementing the {@link #handler} method.
     *
     * By default the user will be allowed to pick any date; this can be changed by using the {@link #minDate},
     * {@link #maxDate}, {@link #disabledDays}, {@link #disabledDatesRE}, and/or {@link #disabledDates} configs.
     *
     * All the string values documented below may be overridden by including an Ext locale file in your page.
     *
     *     @example
     *     Ext.create('Ext.panel.Panel', {
     *         title: 'Choose a future date:',
     *         width: 200,
     *         bodyPadding: 10,
     *         renderTo: Ext.getBody(),
     *         items: [{
     *             xtype: 'datepicker',
     *             minDate: new Date(),
     *             handler: function(picker, date) {
     *                 // do something with the selected date
     *             }
     *         }]
     *     });
     */
    Ext.define('Ext.picker.Date', {
        extend: 'Ext.Component',
        requires: [
            'Ext.XTemplate',
            'Ext.button.Button',
            'Ext.button.Split',
            'Ext.util.ClickRepeater',
            'Ext.util.KeyNav',
            'Ext.EventObject',
            'Ext.fx.Manager',
            'Ext.picker.Month'
        ],
        alias: 'widget.datepicker',
        alternateClassName: 'Ext.DatePicker',

        childEls: [
            'innerEl', 'eventEl', 'prevEl', 'nextEl', 'middleBtnEl', 'footerEl'
        ],

        border: true,

        renderTpl: [
            '<div id="{id}-innerEl" role="grid">',
                '<div role="presentation" class="{baseCls}-header">',
                     // the href attribute is required for the :hover selector to work in IE6/7/quirks
                    '<a id="{id}-prevEl" class="{baseCls}-prev {baseCls}-arrow" href="#" role="button" title="{prevText}" hidefocus="on" ></a>',
                    '<div class="{baseCls}-month" id="{id}-middleBtnEl">{%this.renderMonthBtn(values, out)%}</div>',
                     // the href attribute is required for the :hover selector to work in IE6/7/quirks
                    '<a id="{id}-nextEl" class="{baseCls}-next {baseCls}-arrow" href="#" role="button" title="{nextText}" hidefocus="on" ></a>',
                '</div>',
                '<table id="{id}-eventEl" class="{baseCls}-inner" cellspacing="0" role="grid">',
                    '<thead role="presentation"><tr role="row">',
                        '<tpl for="dayNames">',
                            '<th role="columnheader" class="{parent.baseCls}-column-header" title="{.}">',
                                '<div class="{parent.baseCls}-column-header-inner">{.:this.firstInitial}</div>',
                            '</th>',
                        '</tpl>',
                    '</tr></thead>',
                    '<tbody role="presentation"><tr role="row">',
                        '<tpl for="days">',
                            '{#:this.isEndOfWeek}',
                            '<td role="gridcell" id="{[Ext.id()]}">',
                                // the href attribute is required for the :hover selector to work in IE6/7/quirks
                                '<a role="presentation" hidefocus="on" class="{parent.baseCls}-date" href="#"></a>',
                            '</td>',
                        '</tpl>',
                    '</tr></tbody>',
                '</table>',
                '<tpl if="showToday">',
                    '<div id="{id}-footerEl" role="presentation" class="{baseCls}-footer">{%this.renderTodayBtn(values, out)%}</div>',
                '</tpl>',
            '</div>',
            {
                firstInitial: function(value) {
                    return Ext.picker.Date.prototype.getDayInitial(value);
                },
                isEndOfWeek: function(value) {
                    // convert from 1 based index to 0 based
                    // by decrementing value once.
                    value--;
                    var end = value % 7 === 0 && value !== 0;
                    return end ? '</tr><tr role="row">' : '';
                },
                renderTodayBtn: function(values, out) {
                    Ext.DomHelper.generateMarkup(values.$comp.todayBtn.getRenderTree(), out);
                },
                renderMonthBtn: function(values, out) {
                    Ext.DomHelper.generateMarkup(values.$comp.monthBtn.getRenderTree(), out);
                }
            }
        ],

        //<locale>
        /**
         * @cfg {String} todayText
         * The text to display on the button that selects the current date
         */
        todayText : 'Today',
        //</locale>

        //<locale>
        /**
         * @cfg {String} ariaTitle
         * The text to display for the aria title
         */
        ariaTitle: 'Date Picker: {0}',
        //</locale>

        //<locale>
        /**
         * @cfg {String} ariaTitleDateFormat
         * The date format to display for the current value in the {@link #ariaTitle}
         */
        ariaTitleDateFormat: 'F d, Y',
        //</locale>

        /**
         * @cfg {Function} handler
         * Optional. A function that will handle the select event of this picker. The handler is passed the following
         * parameters:
         *
         *   - `picker` : Ext.picker.Date
         *
         * This Date picker.
         *
         *   - `date` : Date
         *
         * The selected date.
         */

        /**
         * @cfg {Object} scope
         * The scope (`this` reference) in which the `{@link #handler}` function will be called.
         *
         * Defaults to this DatePicker instance.
         */

        //<locale>
        /**
         * @cfg {String} todayTip
         * A string used to format the message for displaying in a tooltip over the button that selects the current date.
         * The `{0}` token in string is replaced by today's date.
         */
        todayTip : '{0} (Spacebar)',
        //</locale>

        //<locale>
        /**
         * @cfg {String} minText
         * The error text to display if the minDate validation fails.
         */
        minText : 'This date is before the minimum date',
        //</locale>

        //<locale>
        /**
         * @cfg {String} maxText
         * The error text to display if the maxDate validation fails.
         */
        maxText : 'This date is after the maximum date',
        //</locale>

        /**
         * @cfg {String} format
         * The default date format string which can be overriden for localization support. The format must be valid
         * according to {@link Ext.Date#parse} (defaults to {@link Ext.Date#defaultFormat}).
         */

        //<locale>
        /**
         * @cfg {String} disabledDaysText
         * The tooltip to display when the date falls on a disabled day.
         */
        disabledDaysText : 'Disabled',
        //</locale>

        //<locale>
        /**
         * @cfg {String} disabledDatesText
         * The tooltip text to display when the date falls on a disabled date.
         */
        disabledDatesText : 'Disabled',
        //</locale>

        /**
         * @cfg {String[]} monthNames
         * An array of textual month names which can be overriden for localization support (defaults to Ext.Date.monthNames)
         * @deprecated This config is deprecated. In future the month names will be retrieved from {@link Ext.Date}
         */

        /**
         * @cfg {String[]} dayNames
         * An array of textual day names which can be overriden for localization support (defaults to Ext.Date.dayNames)
         * @deprecated This config is deprecated. In future the day names will be retrieved from {@link Ext.Date}
         */

        //<locale>
        /**
         * @cfg {String} nextText
         * The next month navigation button tooltip
         */
        nextText : 'Next Month (Control+Right)',
        //</locale>

        //<locale>
        /**
         * @cfg {String} prevText
         * The previous month navigation button tooltip
         */
        prevText : 'Previous Month (Control+Left)',
        //</locale>

        //<locale>
        /**
         * @cfg {String} monthYearText
         * The header month selector tooltip
         */
        monthYearText : 'Choose a month (Control+Up/Down to move years)',
        //</locale>

        //<locale>
        /**
         * @cfg {String} monthYearFormat
         * The date format for the header month
         */
        monthYearFormat: 'F Y',
        //</locale>

        //<locale>
        /**
         * @cfg {Number} [startDay=undefined]
         * Day index at which the week should begin, 0-based.
         *
         * Defaults to `0` (Sunday).
         */
        startDay : 0,
        //</locale>

        //<locale>
        /**
         * @cfg {Boolean} showToday
         * False to hide the footer area containing the Today button and disable the keyboard handler for spacebar that
         * selects the current date.
         */
        showToday : true,
        //</locale>

        /**
         * @cfg {Date} [minDate=null]
         * Minimum allowable date (JavaScript date object)
         */

        /**
         * @cfg {Date} [maxDate=null]
         * Maximum allowable date (JavaScript date object)
         */

        /**
         * @cfg {Number[]} [disabledDays=null]
         * An array of days to disable, 0-based. For example, [0, 6] disables Sunday and Saturday.
         */

        /**
         * @cfg {RegExp} [disabledDatesRE=null]
         * JavaScript regular expression used to disable a pattern of dates. The {@link #disabledDates}
         * config will generate this regex internally, but if you specify disabledDatesRE it will take precedence over the
         * disabledDates value.
         */

        /**
         * @cfg {String[]} disabledDates
         * An array of 'dates' to disable, as strings. These strings will be used to build a dynamic regular expression so
         * they are very powerful. Some examples:
         *
         *   - ['03/08/2003', '09/16/2003'] would disable those exact dates
         *   - ['03/08', '09/16'] would disable those days for every year
         *   - ['^03/08'] would only match the beginning (useful if you are using short years)
         *   - ['03/../2006'] would disable every day in March 2006
         *   - ['^03'] would disable every day in every March
         *
         * Note that the format of the dates included in the array should exactly match the {@link #format} config. In order
         * to support regular expressions, if you are using a date format that has '.' in it, you will have to escape the
         * dot when restricting dates. For example: ['03\\.08\\.03'].
         */

        /**
         * @cfg {Boolean} disableAnim
         * True to disable animations when showing the month picker.
         */
        disableAnim: false,

        /**
         * @cfg {String} [baseCls='x-datepicker']
         * The base CSS class to apply to this components element.
         */
        baseCls: Ext.baseCSSPrefix + 'datepicker',

        /**
         * @cfg {String} [selectedCls='x-datepicker-selected']
         * The class to apply to the selected cell.
         */

        /**
         * @cfg {String} [disabledCellCls='x-datepicker-disabled']
         * The class to apply to disabled cells.
         */

        //<locale>
        /**
         * @cfg {String} longDayFormat
         * The format for displaying a date in a longer format.
         */
        longDayFormat: 'F d, Y',
        //</locale>

        /**
         * @cfg {Object} keyNavConfig
         * Specifies optional custom key event handlers for the {@link Ext.util.KeyNav} attached to this date picker. Must
         * conform to the config format recognized by the {@link Ext.util.KeyNav} constructor. Handlers specified in this
         * object will replace default handlers of the same name.
         */

        /**
         * @cfg {Boolean} focusOnShow
         * True to automatically focus the picker on show.
         */
        focusOnShow: false,

        // @private
        // Set by other components to stop the picker focus being updated when the value changes.
        focusOnSelect: true,

        // Default value used to initialise each date in the DatePicker.
        // __Note:__ 12 noon was chosen because it steers well clear of all DST timezone changes.
        initHour: 12, // 24-hour format

        numDays: 42,

        // private, inherit docs
        initComponent : function() {
            var me = this,
                clearTime = Ext.Date.clearTime;

            me.selectedCls = me.baseCls + '-selected';
            me.disabledCellCls = me.baseCls + '-disabled';
            me.prevCls = me.baseCls + '-prevday';
            me.activeCls = me.baseCls + '-active';
            me.cellCls = me.baseCls + '-cell';
            me.nextCls = me.baseCls + '-prevday';
            me.todayCls = me.baseCls + '-today';

            if (!me.format) {
                me.format = Ext.Date.defaultFormat;
            }
            if (!me.dayNames) {
                me.dayNames = Ext.Date.dayNames;
            }
            me.dayNames = me.dayNames.slice(me.startDay).concat(me.dayNames.slice(0, me.startDay));

            me.callParent();

            me.value = me.value ?
                     clearTime(me.value, true) : clearTime(new Date());

            me.addEvents(
                /**
                 * @event select
                 * Fires when a date is selected
                 * @param {Ext.picker.Date} this DatePicker
                 * @param {Date} date The selected date
                 */
                'select'
            );

            me.initDisabledDays();
        },

        beforeRender: function () {
            /*
             * days array for looping through 6 full weeks (6 weeks * 7 days)
             * Note that we explicitly force the size here so the template creates
             * all the appropriate cells.
             */
            var me = this,
                days = new Array(me.numDays),
                today = Ext.Date.format(new Date(), me.format);

            // If there's a Menu among our ancestors, then add the menu class.
            // This is so that the MenuManager does not see a mousedown in this Component as a document mousedown, outside the Menu
            if (me.up('menu')) {
                me.addCls(Ext.baseCSSPrefix + 'menu');
            }

            me.monthBtn = new Ext.button.Split({
                ownerCt: me,
                ownerLayout: me.getComponentLayout(),
                text: '',
                tooltip: me.monthYearText,
                listeners: {
                    click: me.showMonthPicker,
                    arrowclick: me.showMonthPicker,
                    scope: me
                }
            });

            if (me.showToday) {
                me.todayBtn = new Ext.button.Button({
                    ownerCt: me,
                    ownerLayout: me.getComponentLayout(),
                    text: Ext.String.format(me.todayText, today),
                    tooltip: Ext.String.format(me.todayTip, today),
                    tooltipType: 'title',
                    handler: me.selectToday,
                    scope: me
                });
            }

            me.callParent();

            Ext.applyIf(me, {
                renderData: {}
            });

            Ext.apply(me.renderData, {
                dayNames: me.dayNames,
                showToday: me.showToday,
                prevText: me.prevText,
                nextText: me.nextText,
                days: days
            });

            me.protoEl.unselectable();
        },

        // Do the job of a container layout at this point even though we are not a Container.
        // TODO: Refactor as a Container.
        finishRenderChildren: function () {
            var me = this;

            me.callParent();
            me.monthBtn.finishRender();
            if (me.showToday) {
                me.todayBtn.finishRender();
            }
        },

        // @private
        // @inheritdoc
        onRender : function(container, position){
            var me = this;

            me.callParent(arguments);

            me.cells = me.eventEl.select('tbody td');
            me.textNodes = me.eventEl.query('tbody td a');

            me.mon(me.eventEl, {
                scope: me,
                mousewheel: me.handleMouseWheel,
                click: {
                    fn: me.handleDateClick,
                    delegate: 'a.' + me.baseCls + '-date'
                }
            });

        },

        // @private
        // @inheritdoc
        initEvents: function(){
            var me = this,
                eDate = Ext.Date,
                day = eDate.DAY;

            me.callParent();

            me.prevRepeater = new Ext.util.ClickRepeater(me.prevEl, {
                handler: me.showPrevMonth,
                scope: me,
                preventDefault: true,
                stopDefault: true
            });

            me.nextRepeater = new Ext.util.ClickRepeater(me.nextEl, {
                handler: me.showNextMonth,
                scope: me,
                preventDefault:true,
                stopDefault:true
            });

            me.keyNav = new Ext.util.KeyNav(me.eventEl, Ext.apply({
                scope: me,
                left : function(e){
                    if(e.ctrlKey){
                        me.showPrevMonth();
                    }else{
                        me.update(eDate.add(me.activeDate, day, -1));
                    }
                },

                right : function(e){
                    if(e.ctrlKey){
                        me.showNextMonth();
                    }else{
                        me.update(eDate.add(me.activeDate, day, 1));
                    }
                },

                up : function(e){
                    if(e.ctrlKey){
                        me.showNextYear();
                    }else{
                        me.update(eDate.add(me.activeDate, day, -7));
                    }
                },

                down : function(e){
                    if(e.ctrlKey){
                        me.showPrevYear();
                    }else{
                        me.update(eDate.add(me.activeDate, day, 7));
                    }
                },

                pageUp:function (e) {
                    if (e.altKey) {
                        me.showPrevYear();
                    } else {
                        me.showPrevMonth();
                    }
                },

                pageDown:function (e) {
                    if (e.altKey) {
                        me.showNextYear();
                    } else {
                        me.showNextMonth();
                    }
                },

                tab:function (e) {
                    me.doCancelFieldFocus = true;
                    me.handleTabClick(e);
                    delete me.doCancelFieldFocus;
                    return true;
                },

                enter : function(e){
                    e.stopPropagation();
                    return true;
                },

                //space: ???

                home:function (e) {
                    me.update(eDate.getFirstDateOfMonth(me.activeDate));
                },

                end:function (e) {
                    me.update(eDate.getLastDateOfMonth(me.activeDate));
                }
            }, me.keyNavConfig));

            if (me.showToday) {
                me.todayKeyListener = me.eventEl.addKeyListener(Ext.EventObject.SPACE, me.selectToday,  me);
            }
            me.update(me.value);
        },

        handleTabClick:function (e) {
            var me = this,
                t = me.getSelectedDate(me.activeDate),
                handler = me.handler;

            // The following code is like handleDateClick without the e.stopEvent()
            if (!me.disabled && t.dateValue && !Ext.fly(t.parentNode).hasCls(me.disabledCellCls)) {
                me.doCancelFocus = me.focusOnSelect === false;
                me.setValue(new Date(t.dateValue));
                delete me.doCancelFocus;
                me.fireEvent('select', me, me.value);
                if (handler) {
                    handler.call(me.scope || me, me, me.value);
                }
                me.onSelect();
            }
        },

        getSelectedDate:function (date) {
            var me = this,
                t = date.getTime(),
                cells = me.cells,
                cls = me.selectedCls,
                cellItems = cells.elements,
                c,
                cLen = cellItems.length,
                cell;

            cells.removeCls(cls);

            for (c = 0; c < cLen; c++) {
                cell = Ext.fly(cellItems[c]);

                if (cell.dom.firstChild.dateValue == t) {
                    return cell.dom.firstChild;
                }
            }
            return null;
        },

        /**
         * Setup the disabled dates regex based on config options
         * @private
         */
        initDisabledDays : function(){
            var me = this,
                dd = me.disabledDates,
                re = '(?:',
                len,
                d, dLen, dI;

            if(!me.disabledDatesRE && dd){
                    len = dd.length - 1;

                dLen = dd.length;

                for (d = 0; d < dLen; d++) {
                    dI = dd[d];

                    re += Ext.isDate(dI) ? '^' + Ext.String.escapeRegex(Ext.Date.dateFormat(dI, me.format)) + '$' : dI;
                    if (d != len) {
                        re += '|';
                    }
                }

                me.disabledDatesRE = new RegExp(re + ')');
            }
        },

        /**
         * Replaces any existing disabled dates with new values and refreshes the DatePicker.
         * @param {String[]/RegExp} disabledDates An array of date strings (see the {@link #disabledDates} config for
         * details on supported values), or a JavaScript regular expression used to disable a pattern of dates.
         * @return {Ext.picker.Date} this
         */
        setDisabledDates : function(dd){
            var me = this;

            if(Ext.isArray(dd)){
                me.disabledDates = dd;
                me.disabledDatesRE = null;
            }else{
                me.disabledDatesRE = dd;
            }
            me.initDisabledDays();
            me.update(me.value, true);
            return me;
        },

        /**
         * Replaces any existing disabled days (by index, 0-6) with new values and refreshes the DatePicker.
         * @param {Number[]} disabledDays An array of disabled day indexes. See the {@link #disabledDays} config for details
         * on supported values.
         * @return {Ext.picker.Date} this
         */
        setDisabledDays : function(dd){
            this.disabledDays = dd;
            return this.update(this.value, true);
        },

        /**
         * Replaces any existing {@link #minDate} with the new value and refreshes the DatePicker.
         * @param {Date} value The minimum date that can be selected
         * @return {Ext.picker.Date} this
         */
        setMinDate : function(dt){
            this.minDate = dt;
            return this.update(this.value, true);
        },

        /**
         * Replaces any existing {@link #maxDate} with the new value and refreshes the DatePicker.
         * @param {Date} value The maximum date that can be selected
         * @return {Ext.picker.Date} this
         */
        setMaxDate : function(dt){
            this.maxDate = dt;
            return this.update(this.value, true);
        },

        /**
         * Sets the value of the date field
         * @param {Date} value The date to set
         * @return {Ext.picker.Date} this
         */
        setValue : function(value){
            this.value = Ext.Date.clearTime(value, true);
            return this.update(this.value);
        },

        /**
         * Gets the current selected value of the date field
         * @return {Date} The selected date
         */
        getValue : function(){
            return this.value;
        },

        //<locale type="function">
        /**
         * Gets a single character to represent the day of the week
         * @return {String} The character
         */
        getDayInitial: function(value){
            return value.substr(0,1);
        },
        //</locale>

        // @private
        focus : function(){
            this.update(this.activeDate);
        },

        // @private
        // @inheritdoc
        onEnable: function(){
            this.callParent();
            this.setDisabledStatus(false);
            this.update(this.activeDate);

        },

        // @private
        // @inheritdoc
        onDisable : function(){
            this.callParent();
            this.setDisabledStatus(true);
        },

        /**
         * Set the disabled state of various internal components
         * @private
         * @param {Boolean} disabled
         */
        setDisabledStatus : function(disabled){
            var me = this;

            me.keyNav.setDisabled(disabled);
            me.prevRepeater.setDisabled(disabled);
            me.nextRepeater.setDisabled(disabled);
            if (me.showToday) {
                me.todayKeyListener.setDisabled(disabled);
                me.todayBtn.setDisabled(disabled);
            }
        },

        /**
         * Get the current active date.
         * @private
         * @return {Date} The active date
         */
        getActive: function(){
            return this.activeDate || this.value;
        },

        /**
         * Run any animation required to hide/show the month picker.
         * @private
         * @param {Boolean} isHide True if it's a hide operation
         */
        runAnimation: function(isHide){
            var picker = this.monthPicker,
                options = {
                    duration: 200,
                    callback: function(){
                        if (isHide) {
                            picker.hide();
                        } else {
                            picker.show();
                        }
                    }
                };

            if (isHide) {
                picker.el.slideOut('t', options);
            } else {
                picker.el.slideIn('t', options);
            }
        },

        /**
         * Hides the month picker, if it's visible.
         * @param {Boolean} [animate] Indicates whether to animate this action. If the animate
         * parameter is not specified, the behavior will use {@link #disableAnim} to determine
         * whether to animate or not.
         * @return {Ext.picker.Date} this
         */
        hideMonthPicker : function(animate){
            var me = this,
                picker = me.monthPicker;

            if (picker) {
                if (me.shouldAnimate(animate)) {
                    me.runAnimation(true);
                } else {
                    picker.hide();
                }
            }
            return me;
        },

        /**
         * Show the month picker
         * @param {Boolean} [animate] Indicates whether to animate this action. If the animate
         * parameter is not specified, the behavior will use {@link #disableAnim} to determine
         * whether to animate or not.
         * @return {Ext.picker.Date} this
         */
        showMonthPicker : function(animate){
            var me = this,
                picker;

            if (me.rendered && !me.disabled) {
                picker = me.createMonthPicker();
                picker.setValue(me.getActive());
                picker.setSize(me.getSize());
                picker.setPosition(-1, -1);
                if (me.shouldAnimate(animate)) {
                    me.runAnimation(false);
                } else {
                    picker.show();
                }
            }
            return me;
        },

        /**
         * Checks whether a hide/show action should animate
         * @private
         * @param {Boolean} [animate] A possible animation value
         * @return {Boolean} Whether to animate the action
         */
        shouldAnimate: function(animate){
            return Ext.isDefined(animate) ? animate : !this.disableAnim;
        },

        /**
         * Create the month picker instance
         * @private
         * @return {Ext.picker.Month} picker
         */
        createMonthPicker: function(){
            var me = this,
                picker = me.monthPicker;

            if (!picker) {
                me.monthPicker = picker = new Ext.picker.Month({
                    renderTo: me.el,
                    floating: true,
                    shadow: false,
                    small: me.showToday === false,
                    listeners: {
                        scope: me,
                        cancelclick: me.onCancelClick,
                        okclick: me.onOkClick,
                        yeardblclick: me.onOkClick,
                        monthdblclick: me.onOkClick
                    }
                });
                if (!me.disableAnim) {
                    // hide the element if we're animating to prevent an initial flicker
                    picker.el.setStyle('display', 'none');
                }
                me.on('beforehide', Ext.Function.bind(me.hideMonthPicker, me, [false]));
            }
            return picker;
        },

        /**
         * Respond to an ok click on the month picker
         * @private
         */
        onOkClick: function(picker, value){
            var me = this,
                month = value[0],
                year = value[1],
                date = new Date(year, month, me.getActive().getDate());

            if (date.getMonth() !== month) {
                // 'fix' the JS rolling date conversion if needed
                date = Ext.Date.getLastDateOfMonth(new Date(year, month, 1));
            }
            me.setValue(date);
            me.hideMonthPicker();
        },

        /**
         * Respond to a cancel click on the month picker
         * @private
         */
        onCancelClick: function(){
            // update the selected value, also triggers a focus
            this.selectedUpdate(this.activeDate);
            this.hideMonthPicker();
        },

        /**
         * Show the previous month.
         * @param {Object} e
         * @return {Ext.picker.Date} this
         */
        showPrevMonth : function(e){
            return this.setValue(Ext.Date.add(this.activeDate, Ext.Date.MONTH, -1));
        },

        /**
         * Show the next month.
         * @param {Object} e
         * @return {Ext.picker.Date} this
         */
        showNextMonth : function(e){
            return this.setValue(Ext.Date.add(this.activeDate, Ext.Date.MONTH, 1));
        },

        /**
         * Show the previous year.
         * @return {Ext.picker.Date} this
         */
        showPrevYear : function(){
            return this.setValue(Ext.Date.add(this.activeDate, Ext.Date.YEAR, -1));
        },

        /**
         * Show the next year.
         * @return {Ext.picker.Date} this
         */
        showNextYear : function(){
            return this.setValue(Ext.Date.add(this.activeDate, Ext.Date.YEAR, 1));
        },

        /**
         * Respond to the mouse wheel event
         * @private
         * @param {Ext.EventObject} e
         */
        handleMouseWheel : function(e){
            e.stopEvent();
            if(!this.disabled){
                var delta = e.getWheelDelta();
                if(delta > 0){
                    this.showPrevMonth();
                } else if(delta < 0){
                    this.showNextMonth();
                }
            }
        },

        /**
         * Respond to a date being clicked in the picker
         * @private
         * @param {Ext.EventObject} e
         * @param {HTMLElement} t
         */
        handleDateClick : function(e, t){
            var me = this,
                handler = me.handler;

            e.stopEvent();
            if(!me.disabled && t.dateValue && !Ext.fly(t.parentNode).hasCls(me.disabledCellCls)){
                me.doCancelFocus = me.focusOnSelect === false;
                me.setValue(new Date(t.dateValue));
                delete me.doCancelFocus;
                me.fireEvent('select', me, me.value);
                if (handler) {
                    handler.call(me.scope || me, me, me.value);
                }
                // event handling is turned off on hide
                // when we are using the picker in a field
                // therefore onSelect comes AFTER the select
                // event.
                me.onSelect();
            }
        },

        /**
         * Perform any post-select actions
         * @private
         */
        onSelect: function() {
            if (this.hideOnSelect) {
                 this.hide();
             }
        },

        /**
         * Sets the current value to today.
         * @return {Ext.picker.Date} this
         */
        selectToday : function(){
            var me = this,
                btn = me.todayBtn,
                handler = me.handler;

            if(btn && !btn.disabled){
                me.setValue(Ext.Date.clearTime(new Date()));
                me.fireEvent('select', me, me.value);
                if (handler) {
                    handler.call(me.scope || me, me, me.value);
                }
                me.onSelect();
            }
            return me;
        },

        /**
         * Update the selected cell
         * @private
         * @param {Date} date The new date
         */
        selectedUpdate: function(date){
            var me        = this,
                t         = date.getTime(),
                cells     = me.cells,
                cls       = me.selectedCls,
                cellItems = cells.elements,
                c,
                cLen      = cellItems.length,
                cell;

            cells.removeCls(cls);

            for (c = 0; c < cLen; c++) {
                cell = Ext.fly(cellItems[c]);

                if (cell.dom.firstChild.dateValue == t) {
                    me.fireEvent('highlightitem', me, cell);
                    cell.addCls(cls);

                    if(me.isVisible() && !me.doCancelFocus){
                        Ext.fly(cell.dom.firstChild).focus(50);
                    }

                    break;
                }
            }
        },

        /**
         * Update the contents of the picker for a new month
         * @private
         * @param {Date} date The new date
         */
        fullUpdate: function(date){
            var me = this,
                cells = me.cells.elements,
                textNodes = me.textNodes,
                disabledCls = me.disabledCellCls,
                eDate = Ext.Date,
                i = 0,
                extraDays = 0,
                visible = me.isVisible(),
                newDate = +eDate.clearTime(date, true),
                today = +eDate.clearTime(new Date()),
                min = me.minDate ? eDate.clearTime(me.minDate, true) : Number.NEGATIVE_INFINITY,
                max = me.maxDate ? eDate.clearTime(me.maxDate, true) : Number.POSITIVE_INFINITY,
                ddMatch = me.disabledDatesRE,
                ddText = me.disabledDatesText,
                ddays = me.disabledDays ? me.disabledDays.join('') : false,
                ddaysText = me.disabledDaysText,
                format = me.format,
                days = eDate.getDaysInMonth(date),
                firstOfMonth = eDate.getFirstDateOfMonth(date),
                startingPos = firstOfMonth.getDay() - me.startDay,
                previousMonth = eDate.add(date, eDate.MONTH, -1),
                longDayFormat = me.longDayFormat,
                prevStart,
                current,
                disableToday,
                tempDate,
                setCellClass,
                html,
                cls,
                formatValue,
                value;

            if (startingPos < 0) {
                startingPos += 7;
            }

            days += startingPos;
            prevStart = eDate.getDaysInMonth(previousMonth) - startingPos;
            current = new Date(previousMonth.getFullYear(), previousMonth.getMonth(), prevStart, me.initHour);

            if (me.showToday) {
                tempDate = eDate.clearTime(new Date());
                disableToday = (tempDate < min || tempDate > max ||
                    (ddMatch && format && ddMatch.test(eDate.dateFormat(tempDate, format))) ||
                    (ddays && ddays.indexOf(tempDate.getDay()) != -1));

                if (!me.disabled) {
                    me.todayBtn.setDisabled(disableToday);
                    me.todayKeyListener.setDisabled(disableToday);
                }
            }

            setCellClass = function(cell, cls){
                value = +eDate.clearTime(current, true);
                cell.title = eDate.format(current, longDayFormat);
                // store dateValue number as an expando
                cell.firstChild.dateValue = value;
                if(value == today){
                    cls += ' ' + me.todayCls;
                    cell.title = me.todayText;

                    // Extra element for ARIA purposes
                    me.todayElSpan = Ext.DomHelper.append(cell.firstChild, {
                        tag:'span',
                        cls: Ext.baseCSSPrefix + 'hide-clip',
                        html:me.todayText
                    }, true);
                }
                if(value == newDate) {
                    cls += ' ' + me.selectedCls;
                    me.fireEvent('highlightitem', me, cell);
                    if (visible && me.floating) {
                        Ext.fly(cell.firstChild).focus(50);
                    }
                }

                if (value < min) {
                    cls += ' ' + disabledCls;
                    cell.title = me.minText;
                }
                else if (value > max) {
                    cls += ' ' + disabledCls;
                    cell.title = me.maxText;
                }
                else if (ddays && ddays.indexOf(current.getDay()) !== -1){
                    cell.title = ddaysText;
                    cls += ' ' + disabledCls;
                }
                else if (ddMatch && format){
                    formatValue = eDate.dateFormat(current, format);
                    if(ddMatch.test(formatValue)){
                        cell.title = ddText.replace('%0', formatValue);
                        cls += ' ' + disabledCls;
                    }
                }
                cell.className = cls + ' ' + me.cellCls;
            };

            for(; i < me.numDays; ++i) {
                if (i < startingPos) {
                    html = (++prevStart);
                    cls = me.prevCls;
                } else if (i >= days) {
                    html = (++extraDays);
                    cls = me.nextCls;
                } else {
                    html = i - startingPos + 1;
                    cls = me.activeCls;
                }
                textNodes[i].innerHTML = html;
                current.setDate(current.getDate() + 1);
                setCellClass(cells[i], cls);
            }

            me.monthBtn.setText(Ext.Date.format(date, me.monthYearFormat));
        },

        /**
         * Update the contents of the picker
         * @private
         * @param {Date} date The new date
         * @param {Boolean} forceRefresh True to force a full refresh
         */
        update : function(date, forceRefresh){
            var me = this,
                active = me.activeDate;

            if (me.rendered) {
                me.activeDate = date;
                if(!forceRefresh && active && me.el && active.getMonth() == date.getMonth() && active.getFullYear() == date.getFullYear()){
                    me.selectedUpdate(date, active);
                } else {
                    me.fullUpdate(date, active);
                }
            }
            return me;
        },

        // @private
        // @inheritdoc
        beforeDestroy : function() {
            var me = this;

            if (me.rendered) {
                Ext.destroy(
                    me.todayKeyListener,
                    me.keyNav,
                    me.monthPicker,
                    me.monthBtn,
                    me.nextRepeater,
                    me.prevRepeater,
                    me.todayBtn
                );
                delete me.textNodes;
                delete me.cells.elements;
            }
            me.callParent();
        },

        // @private
        // @inheritdoc
        onShow: function() {
            this.callParent(arguments);
            if (this.focusOnShow) {
                this.focus();
            }
        }
    });