/**
+ * @class Ext.form.NumberField
+ * @extends Ext.form.TextField
+ * Numeric text field that provides automatic keystroke filtering and numeric validation.
+ * @constructor
+ * Creates a new NumberField
+ * @param {Object} config Configuration options
+ * @xtype numberfield
+ */
+Ext.form.NumberField = Ext.extend(Ext.form.TextField, {
+ /**
+ * @cfg {RegExp} stripCharsRe @hide
+ */
+ /**
+ * @cfg {RegExp} maskRe @hide
+ */
+ /**
+ * @cfg {String} fieldClass The default CSS class for the field (defaults to "x-form-field x-form-num-field")
+ */
+ fieldClass: "x-form-field x-form-num-field",
+ /**
+ * @cfg {Boolean} allowDecimals False to disallow decimal values (defaults to true)
+ */
+ allowDecimals : true,
+ /**
+ * @cfg {String} decimalSeparator Character(s) to allow as the decimal separator (defaults to '.')
+ */
+ decimalSeparator : ".",
+ /**
+ * @cfg {Number} decimalPrecision The maximum precision to display after the decimal separator (defaults to 2)
+ */
+ decimalPrecision : 2,
+ /**
+ * @cfg {Boolean} allowNegative False to prevent entering a negative sign (defaults to true)
+ */
+ allowNegative : true,
+ /**
+ * @cfg {Number} minValue The minimum allowed value (defaults to Number.NEGATIVE_INFINITY)
+ */
+ minValue : Number.NEGATIVE_INFINITY,
+ /**
+ * @cfg {Number} maxValue The maximum allowed value (defaults to Number.MAX_VALUE)
+ */
+ maxValue : Number.MAX_VALUE,
+ /**
+ * @cfg {String} minText Error text to display if the minimum value validation fails (defaults to "The minimum value for this field is {minValue}")
+ */
+ minText : "The minimum value for this field is {0}",
+ /**
+ * @cfg {String} maxText Error text to display if the maximum value validation fails (defaults to "The maximum value for this field is {maxValue}")
+ */
+ maxText : "The maximum value for this field is {0}",
+ /**
+ * @cfg {String} nanText Error text to display if the value is not a valid number. For example, this can happen
+ * if a valid character like '.' or '-' is left in the field with no number (defaults to "{value} is not a valid number")
+ */
+ nanText : "{0} is not a valid number",
+ /**
+ * @cfg {String} baseChars The base set of characters to evaluate as valid numbers (defaults to '0123456789').
+ */
+ baseChars : "0123456789",
+
+ // private
+ initEvents : function(){
+ var allowed = this.baseChars + '';
+ if (this.allowDecimals) {
+ allowed += this.decimalSeparator;
+ }
+ if (this.allowNegative) {
+ allowed += '-';
+ }
+ this.maskRe = new RegExp('[' + Ext.escapeRe(allowed) + ']');
+ Ext.form.NumberField.superclass.initEvents.call(this);
+ },
+
+ // private
+ validateValue : function(value){
+ if(!Ext.form.NumberField.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;
+ }
+ value = String(value).replace(this.decimalSeparator, ".");
+ if(isNaN(value)){
+ this.markInvalid(String.format(this.nanText, value));
+ return false;
+ }
+ var num = this.parseValue(value);
+ if(num < this.minValue){
+ this.markInvalid(String.format(this.minText, this.minValue));
+ return false;
+ }
+ if(num > this.maxValue){
+ this.markInvalid(String.format(this.maxText, this.maxValue));
+ return false;
+ }
+ return true;
+ },
+
+ getValue : function(){
+ return this.fixPrecision(this.parseValue(Ext.form.NumberField.superclass.getValue.call(this)));
+ },
+
+ setValue : function(v){
+ v = typeof v == 'number' ? v : parseFloat(String(v).replace(this.decimalSeparator, "."));
+ v = isNaN(v) ? '' : String(v).replace(".", this.decimalSeparator);
+ return Ext.form.NumberField.superclass.setValue.call(this, v);
+ },
+
+ // private
+ parseValue : function(value){
+ value = parseFloat(String(value).replace(this.decimalSeparator, "."));
+ return isNaN(value) ? '' : value;
+ },
+
+ // private
+ fixPrecision : function(value){
+ var nan = isNaN(value);
+ if(!this.allowDecimals || this.decimalPrecision == -1 || nan || !value){
+ return nan ? '' : value;
+ }
+ return parseFloat(parseFloat(value).toFixed(this.decimalPrecision));
+ },
+
+ beforeBlur : function(){
+ var v = this.parseValue(this.getRawValue());
+ if(!Ext.isEmpty(v)){
+ this.setValue(this.fixPrecision(v));
+ }
+ }
+});
+Ext.reg('numberfield', Ext.form.NumberField);