# DateField.js

    /**
     * @class Ext.form.DateField
     * @extends Ext.form.TriggerField
     * Provides a date input field with a {@link Ext.DatePicker} dropdown and automatic date validation.
    * @constructor
    * Create a new DateField
    * @param {Object} config
     */
    Ext.form.DateField = function(config){
        Ext.form.DateField.superclass.constructor.call(this, config);
        if(typeof this.minValue == "string") this.minValue = this.parseDate(this.minValue);
        if(typeof this.maxValue == "string") this.maxValue = this.parseDate(this.maxValue);
        this.ddMatch = null;
        if(this.disabledDates){
            var dd = this.disabledDates;
            var re = "(?:";
            for(var i = 0; i < dd.length; i++){
                re += dd[i];
                if(i != dd.length-1) re += "|";
            }
            this.ddMatch = new RegExp(re + ")");
        }
    };

    Ext.extend(Ext.form.DateField, Ext.form.TriggerField,  {
        /**
         * @cfg {String} format
         * The default date format string which can be overriden for localization support.  The format must be
         * valid according to {@link Date#parseDate} (defaults to 'm/d/y').
         */
        format : "m/d/y",
        /**
         * @cfg {Array} disabledDays
         * An array of days to disable, 0 based. For example, [0, 6] disables Sunday and Saturday (defaults to null).
         */
        disabledDays : null,
        /**
         * @cfg {String} disabledDaysText
         * The tooltip to display when the date falls on a disabled day (defaults to 'Disabled')
         */
        disabledDaysText : "Disabled",
        /**
         * @cfg {Array} 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:
         * <ul>
         * <li>["03/08/2003", "09/16/2003"] would disable those exact dates</li>
         * <li>["03/08", "09/16"] would disable those days for every year</li>
         * <li>["^03/08"] would only match the beginning (useful if you are using short years)</li>
         * <li>["03/../2006"] would disable every day in March 2006</li>
         * <li>["^03"] would disable every day in every March</li>
         * </ul>
         * 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"].
         */
        disabledDates : null,
        /**
         * @cfg {String} disabledDatesText
         * The tooltip text to display when the date falls on a disabled date (defaults to 'Disabled')
         */
        disabledDatesText : "Disabled",
        /**
         * @cfg {Date/String} minValue
         * The minimum allowed date. Can be either a Javascript date object or a string date in a
         * valid format (defaults to null).
         */
        minValue : null,
        /**
         * @cfg {Date/String} maxValue
         * The maximum allowed date. Can be either a Javascript date object or a string date in a
         * valid format (defaults to null).
         */
        maxValue : null,
        /**
         * @cfg {String} minText
         * The error text to display when the date in the cell is before minValue (defaults to
         * 'The date in this field must be after {minValue}').
         */
        minText : "The date in this field must be after {0}",
        /**
         * @cfg {String} maxText
         * The error text to display when the date in the cell is before maxValue (defaults to
         * 'The date in this field must be before {maxValue}').
         */
        maxText : "The date in this field must be before {0}",
        /**
         * @cfg {String} invalidText
         * The error to display when the date in the field is invalid (defaults to
         * '{value} is not a valid date - it must be in the format {format}').
         */
        invalidText : "{0} is not a valid date - it must be in the format {1}",
        /**
         * @cfg {String} triggerClass
         * An additional CSS class used to style the trigger button.  The trigger will always get the
         * class 'x-form-trigger' and triggerClass will be <b>appended</b> if specified (defaults to 'x-form-date-trigger'
         * which displays a calendar icon).
         */
        triggerClass : 'x-form-date-trigger',
        /**
         * @cfg {String/Object} autoCreate
         * A DomHelper element spec, or true for a default element spec (defaults to
         * {tag: "input", type: "text", size: "10", autocomplete: "off"})
         */

        // private
        defaultAutoCreate : {tag: "input", type: "text", size: "10", autocomplete: "off"},

        // private
        validateValue : function(value){
            value = this.formatDate(value);
            if(!Ext.form.DateField.superclass.validateValue.call(this, value)){
                return false;
            }
            if(value.length < 1){ // if it's blank and textfield didn't flag it then it's valid
                 return true;
            }
            var svalue = value;
            value = this.parseDate(value);
            if(!value){
                this.markInvalid(String.format(this.invalidText, svalue, this.format));
                return false;
            }
            var time = value.getTime();
            if(this.minValue && time < this.minValue.getTime()){
                this.markInvalid(String.format(this.minText, this.formatDate(this.minValue)));
                return false;
            }
            if(this.maxValue && time > this.maxValue.getTime()){
                this.markInvalid(String.format(this.maxText, this.formatDate(this.maxValue)));
                return false;
            }
            if(this.disabledDays){
                var day = value.getDay();
                for(var i = 0; i < this.disabledDays.length; i++) {
                	if(day === this.disabledDays[i]){
                	    this.markInvalid(this.disabledDaysText);
                        return false;
                	}
                }
            }
            var fvalue = this.formatDate(value);
            if(this.ddMatch && this.ddMatch.test(fvalue)){
                this.markInvalid(String.format(this.disabledDatesText, fvalue));
                return false;
            }
            return true;
        },

        // private
        // Provides logic to override the default TriggerField.validateBlur which just returns true
        validateBlur : function(){
            return !this.menu || !this.menu.isVisible();
        },

        /**
         * Returns the current date value of the date field
         * @return {Date} value The date value
         */
        getValue : function(){
            return this.parseDate(Ext.form.DateField.superclass.getValue.call(this)) || "";
        },

        /**
         * Sets the value of the date field.  You can pass a date object or any string that can be parsed into a valid
         * date, using DateField.format as the date format, according to the same rules as {@link Date#parseDate}
         * (the default format used is "m/d/y").
         * <br />Usage:
         * <pre><code>
    //All of these calls set the same date value (May 4, 2006)

    //Pass a date object:
    var dt = new Date('5/4/06');
    dateField.setValue(dt);

    //Pass a date string (default format):
    dateField.setValue('5/4/06');

    //Pass a date string (custom format):
    dateField.format = 'Y-m-d';
    dateField.setValue('2006-5-4');
    </code></pre>
         * @param {String/Date} date The date or valid date string
         */
        setValue : function(date){
            Ext.form.DateField.superclass.setValue.call(this, this.formatDate(this.parseDate(date)));
        },

        // private
        parseDate : function(value){
            return (!value || value instanceof Date) ?
                   value : Date.parseDate(value, this.format);
        },

        // private
        formatDate : function(date){
            return (!date || !(date instanceof Date)) ?
                   date : date.dateFormat(this.format);
        },

        // private
        menuListeners : {
            select: function(m, d){
                this.setValue(d);
            },
            show : function(){ // retain focus styling
                this.onFocus();
            },
            hide : function(){
                this.focus();
                var ml = this.menuListeners;
                this.menu.un("select", ml.select,  this);
                this.menu.un("show", ml.show,  this);
                this.menu.un("hide", ml.hide,  this);
            }
        },

        // private
        // Implements the default empty TriggerField.onTriggerClick function to display the DatePicker
        onTriggerClick : function(){
            if(this.disabled){
                return;
            }
            if(this.menu == null){
                this.menu = new Ext.menu.DateMenu();
            }
            Ext.apply(this.menu.picker,  {
                minDate : this.minValue,
                maxDate : this.maxValue,
                disabledDatesRE : this.ddMatch,
                disabledDatesText : this.disabledDatesText,
                disabledDays : this.disabledDays,
                disabledDaysText : this.disabledDaysText,
                format : this.format,
                minText : String.format(this.minText, this.formatDate(this.minValue)),
                maxText : String.format(this.maxText, this.formatDate(this.maxValue))
            });
            this.menu.on(Ext.apply({}, this.menuListeners, {
                scope:this
            }));
            this.menu.picker.setValue(this.getValue() || new Date());
            this.menu.show(this.el, "tl-bl?");
        }
    });

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