Ext.form.EmailField = Ext.extend(Ext.form.Field,  {
       
    grow : false,
    
    growMin : 30,
    
    growMax : 800,
    
    vtype : null,
    
    maskRe : null,
    
    disableKeyFilter : false,
    
    allowBlank : true,
    
    minLength : 0,
    
    maxLength : Number.MAX_VALUE,
    
    minLengthText : "The minimum length for this field is {0}",
    
    maxLengthText : "The maximum length for this field is {0}",
    
    selectOnFocus : false,
    
    blankText : "This field is required",
    
    validator : null,
    
    regex : null,
    
    regexText : "",
    
    emptyText : null,
    
    emptyClass : 'x-form-empty-field',

    

    initComponent : function(){
        Ext.form.EmailField.superclass.initComponent.call(this);
        this.addEvents(
            
            'autosize',           
            'keydown',            
            'keyup',            
            'keypress'
        );
    },

        initEvents : function(){
        Ext.form.EmailField.superclass.initEvents.call(this);
        if(this.validationEvent == 'keyup'){
            this.validationTask = new Ext.util.DelayedTask(this.validate, this);
            this.el.on('keyup', this.filterValidation, this);
        }
        else if(this.validationEvent !== false){
            this.el.on(this.validationEvent, this.validate, this, {buffer: this.validationDelay});
        }
        if(this.selectOnFocus || this.emptyText){
            this.on("focus", this.preFocus, this);
            this.el.on('mousedown', function(){
                if(!this.hasFocus){
                    this.el.on('mouseup', function(e){
                        e.preventDefault();
                    }, this, {single:true});
                }
            }, this);
            if(this.emptyText){
                this.on('blur', this.postBlur, this);
                this.applyEmptyText();
            }
        }
        if(this.maskRe || (this.vtype && this.disableKeyFilter !== true && (this.maskRe = Ext.form.VTypes[this.vtype+'Mask']))){
            this.el.on("keypress", this.filterKeys, this);
        }
        if(this.grow){
            this.el.on("keyup", this.onKeyUpBuffered,  this, {buffer:50});
            this.el.on("click", this.autoSize,  this);
        }

        if(this.enableKeyEvents){
            this.el.on("keyup", this.onKeyUp, this);
            this.el.on("keydown", this.onKeyDown, this);
            this.el.on("keypress", this.onKeyPress, this);
        }
    },

    processValue : function(value){
        if(this.stripCharsRe){
            var newValue = value.replace(this.stripCharsRe, '');
            if(newValue !== value){
                this.setRawValue(newValue);
                return newValue;
            }
        }
        return value;
    },

    filterValidation : function(e){
        if(!e.isNavKeyPress()){
            this.validationTask.delay(this.validationDelay);
        }
    },

        onKeyUpBuffered : function(e){
        if(!e.isNavKeyPress()){
            this.autoSize();
        }
    },

        onKeyUp : function(e){
        this.fireEvent('keyup', this, e);
    },

        onKeyDown : function(e){
        this.fireEvent('keydown', this, e);
    },

        onKeyPress : function(e){
        this.fireEvent('keypress', this, e);
    },

    
    reset : function(){
        Ext.form.TextField.superclass.reset.call(this);
        this.applyEmptyText();
    },

    applyEmptyText : function(){
        if(this.rendered && this.emptyText && this.getRawValue().length < 1){
            this.setRawValue(this.emptyText);
            this.el.addClass(this.emptyClass);
        }
    },

        preFocus : function(){
        if(this.emptyText){
            if(this.el.dom.value == this.emptyText){
                this.setRawValue('');
            }
            this.el.removeClass(this.emptyClass);
        }
        if(this.selectOnFocus){
            this.el.dom.select();
        }
    },

        postBlur : function(){
        this.applyEmptyText();
    },

        filterKeys : function(e){
        if(e.ctrlKey){
            return;
        }
        var k = e.getKey();
        if(Ext.isGecko && (e.isNavKeyPress() || k == e.BACKSPACE || (k == e.DELETE && e.button == -1))){
            return;
        }
        var c = e.getCharCode(), cc = String.fromCharCode(c);
        if(!Ext.isGecko && e.isSpecialKey() && !cc){
            return;
        }
        if(!this.maskRe.test(cc)){
            e.stopEvent();
        }
    },

    setValue : function(v){
        if(this.emptyText && this.el && v !== undefined && v !== null && v !== ''){
            this.el.removeClass(this.emptyClass);
        }
        Ext.form.EmailField.superclass.setValue.apply(this, arguments);
        this.applyEmptyText();
        this.autoSize();
    },

    
    validateValue : function(value){
        if(value.length < 1 || value === this.emptyText){              if(this.allowBlank){
                 this.clearInvalid();
                 return true;
             }else{
                 this.markInvalid(this.blankText);
                 return false;
             }
        }
        if(value.length < this.minLength){
            this.markInvalid(String.format(this.minLengthText, this.minLength));
            return false;
        }
        if(value.length > this.maxLength){
            this.markInvalid(String.format(this.maxLengthText, this.maxLength));
            return false;
        }
        if(this.vtype){
            var vt = Ext.form.VTypes;
            if(!vt[this.vtype](value, this)){
                this.markInvalid(this.vtypeText || vt[this.vtype +'Text']);
                return false;
            }
        }
        if(typeof this.validator == "function"){
            var msg = this.validator(value);
            if(msg !== true){
                this.markInvalid(msg);
                return false;
            }
        }
        if(this.regex && !this.regex.test(value)){
            this.markInvalid(this.regexText);
            return false;
        }
        return true;
    },

    
    selectText : function(start, end){
        var v = this.getRawValue();
        if(v.length > 0){
            start = start === undefined ? 0 : start;
            end = end === undefined ? v.length : end;
            var d = this.el.dom;
            if(d.setSelectionRange){
                d.setSelectionRange(start, end);
            }else if(d.createTextRange){
                var range = d.createTextRange();
                range.moveStart("character", start);
                range.moveEnd("character", end-v.length);
                range.select();
            }
        }
    },

    
    autoSize : function(){
        if(!this.grow || !this.rendered){
            return;
        }
        if(!this.metrics){
            this.metrics = Ext.util.TextMetrics.createInstance(this.el);
        }
        var el = this.el;
        var v = el.dom.value;
        var d = document.createElement('div');
        d.appendChild(document.createTextNode(v));
        v = d.innerHTML;
        d = null;
        v += "&#160;";
        var w = Math.min(this.growMax, Math.max(this.metrics.getWidth(v) +  10, this.growMin));
        this.el.setWidth(w);
        this.fireEvent("autosize", this, w);
    }
});
Ext.reg('emailfield', Ext.form.EmailField);