/**
+ * @class Ext.form.field.Number
+ * @extends Ext.form.field.Spinner
+
+A numeric text field that provides automatic keystroke filtering to disallow non-numeric characters,
+and numeric validation to limit the value to a range of valid numbers. The range of acceptable number
+values can be controlled by setting the {@link #minValue} and {@link #maxValue} configs, and fractional
+decimals can be disallowed by setting {@link #allowDecimals} to `false`.
+
+By default, the number field is also rendered with a set of up/down spinner buttons and has
+up/down arrow key and mouse wheel event listeners attached for incrementing/decrementing the value by the
+{@link #step} value. To hide the spinner buttons set `{@link #hideTrigger hideTrigger}:true`; to disable the arrow key
+and mouse wheel handlers set `{@link #keyNavEnabled keyNavEnabled}:false` and
+`{@link #mouseWheelEnabled mouseWheelEnabled}:false`. See the example below.
+
+#Example usage:#
+{@img Ext.form.Number/Ext.form.Number1.png Ext.form.Number component}
+ Ext.create('Ext.form.Panel', {
+ title: 'On The Wall',
+ width: 300,
+ bodyPadding: 10,
+ renderTo: Ext.getBody(),
+ items: [{
+ xtype: 'numberfield',
+ anchor: '100%',
+ name: 'bottles',
+ fieldLabel: 'Bottles of Beer',
+ value: 99,
+ maxValue: 99,
+ minValue: 0
+ }],
+ buttons: [{
+ text: 'Take one down, pass it around',
+ handler: function() {
+ this.up('form').down('[name=bottles]').spinDown();
+ }
+ }]
+ });
+
+#Removing UI Enhancements#
+{@img Ext.form.Number/Ext.form.Number2.png Ext.form.Number component}
+ Ext.create('Ext.form.Panel', {
+ title: 'Personal Info',
+ width: 300,
+ bodyPadding: 10,
+ renderTo: Ext.getBody(),
+ items: [{
+ xtype: 'numberfield',
+ anchor: '100%',
+ name: 'age',
+ fieldLabel: 'Age',
+ minValue: 0, //prevents negative numbers
+
+ // Remove spinner buttons, and arrow key and mouse wheel listeners
+ hideTrigger: true,
+ keyNavEnabled: false,
+ mouseWheelEnabled: false
+ }]
+ });
+
+#Using Step#
+ Ext.create('Ext.form.Panel', {
+ renderTo: Ext.getBody(),
+ title: 'Step',
+ width: 300,
+ bodyPadding: 10,
+ items: [{
+ xtype: 'numberfield',
+ anchor: '100%',
+ name: 'evens',
+ fieldLabel: 'Even Numbers',
+
+ // Set step so it skips every other number
+ step: 2,
+ value: 0,
+
+ // Add change handler to force user-entered numbers to evens
+ listeners: {
+ change: function(field, value) {
+ value = parseInt(value, 10);
+ field.setValue(value + value % 2);
+ }
+ }
+ }]
+ });
+
+
+ * @constructor
+ * Creates a new Number field
+ * @param {Object} config Configuration options
+ *
+ * @xtype numberfield
+ * @markdown
+ * @docauthor Jason Johnston <jason@sencha.com>
+ */
+Ext.define('Ext.form.field.Number', {
+ extend:'Ext.form.field.Spinner',
+ alias: 'widget.numberfield',
+ alternateClassName: ['Ext.form.NumberField', 'Ext.form.Number'],
+
+ /**
+ * @cfg {RegExp} stripCharsRe @hide
+ */
+ /**
+ * @cfg {RegExp} maskRe @hide
+ */
+
+ /**
+ * @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 {Number} minValue The minimum allowed value (defaults to Number.NEGATIVE_INFINITY). Will be used by
+ * the field's validation logic, and for
+ * {@link Ext.form.field.Spinner#setSpinUpEnabled enabling/disabling the down spinner button}.
+ */
+ minValue: Number.NEGATIVE_INFINITY,
+
+ /**
+ * @cfg {Number} maxValue The maximum allowed value (defaults to Number.MAX_VALUE). Will be used by
+ * the field's validation logic, and for
+ * {@link Ext.form.field.Spinner#setSpinUpEnabled enabling/disabling the up spinner button}.
+ */
+ maxValue: Number.MAX_VALUE,
+
+ /**
+ * @cfg {Number} step Specifies a numeric interval by which the field's value will be incremented or
+ * decremented when the user invokes the spinner. Defaults to <tt>1</tt>.
+ */
+ step: 1,
+
+ /**
+ * @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} negativeText Error text to display if the value is negative and {@link #minValue} is set to
+ * <tt>0</tt>. This is used instead of the {@link #minText} in that circumstance only.
+ */
+ negativeText : 'The value cannot be negative',
+
+ /**
+ * @cfg {String} baseChars The base set of characters to evaluate as valid numbers (defaults to '0123456789').
+ */
+ baseChars : '0123456789',
+
+ /**
+ * @cfg {Boolean} autoStripChars True to automatically strip not allowed characters from the field. Defaults to <tt>false</tt>
+ */
+ autoStripChars: false,
+
+ initComponent: function() {
+ var me = this,
+ allowed;
+
+ this.callParent();
+
+ me.setMinValue(me.minValue);
+ me.setMaxValue(me.maxValue);
+
+ // Build regexes for masking and stripping based on the configured options
+ allowed = me.baseChars + '';
+ if (me.allowDecimals) {
+ allowed += me.decimalSeparator;
+ }
+ if (me.minValue < 0) {
+ allowed += '-';
+ }
+ allowed = Ext.String.escapeRegex(allowed);
+ me.maskRe = new RegExp('[' + allowed + ']');
+ if (me.autoStripChars) {
+ me.stripCharsRe = new RegExp('[^' + allowed + ']', 'gi');
+ }
+ },
+
+ /**
+ * Runs all of Number's validations and returns an array of any errors. Note that this first
+ * runs Text's validations, so the returned array is an amalgamation of all field errors.
+ * The additional validations run test that the value is a number, and that it is within the
+ * configured min and max values.
+ * @param {Mixed} value The value to get errors for (defaults to the current field value)
+ * @return {Array} All validation errors for this field
+ */
+ getErrors: function(value) {
+ var me = this,
+ errors = me.callParent(arguments),
+ format = Ext.String.format,
+ num;
+
+ value = Ext.isDefined(value) ? value : this.processRawValue(this.getRawValue());
+
+ if (value.length < 1) { // if it's blank and textfield didn't flag it then it's valid
+ return errors;
+ }
+
+ value = String(value).replace(me.decimalSeparator, '.');
+
+ if(isNaN(value)){
+ errors.push(format(me.nanText, value));
+ }
+
+ num = me.parseValue(value);
+
+ if (me.minValue === 0 && num < 0) {
+ errors.push(this.negativeText);
+ }
+ else if (num < me.minValue) {
+ errors.push(format(me.minText, me.minValue));
+ }
+
+ if (num > me.maxValue) {
+ errors.push(format(me.maxText, me.maxValue));
+ }
+
+
+ return errors;
+ },
+
+ rawToValue: function(rawValue) {
+ return this.fixPrecision(this.parseValue(rawValue)) || rawValue || null;
+ },
+
+ valueToRaw: function(value) {
+ var me = this,
+ decimalSeparator = me.decimalSeparator;
+ value = me.parseValue(value);
+ value = me.fixPrecision(value);
+ value = Ext.isNumber(value) ? value : parseFloat(String(value).replace(decimalSeparator, '.'));
+ value = isNaN(value) ? '' : String(value).replace('.', decimalSeparator);
+ return value;
+ },
+
+ onChange: function() {
+ var me = this,
+ value = me.getValue(),
+ valueIsNull = value === null;
+
+ me.callParent(arguments);
+
+ // Update the spinner buttons
+ me.setSpinUpEnabled(valueIsNull || value < me.maxValue);
+ me.setSpinDownEnabled(valueIsNull || value > me.minValue);
+ },
+
+ /**
+ * Replaces any existing {@link #minValue} with the new value.
+ * @param {Number} value The minimum value
+ */
+ setMinValue : function(value) {
+ this.minValue = Ext.Number.from(value, Number.NEGATIVE_INFINITY);
+ },
+
+ /**
+ * Replaces any existing {@link #maxValue} with the new value.
+ * @param {Number} value The maximum value
+ */
+ setMaxValue: function(value) {
+ this.maxValue = Ext.Number.from(value, Number.MAX_VALUE);
+ },
+
+ // private
+ parseValue : function(value) {
+ value = parseFloat(String(value).replace(this.decimalSeparator, '.'));
+ return isNaN(value) ? null : value;
+ },
+
+ /**
+ * @private
+ *
+ */
+ fixPrecision : function(value) {
+ var me = this,
+ nan = isNaN(value),
+ precision = me.decimalPrecision;
+
+ if (nan || !value) {
+ return nan ? '' : value;
+ } else if (!me.allowDecimals || precision <= 0) {
+ precision = 0;
+ }
+
+ return parseFloat(Ext.Number.toFixed(parseFloat(value), precision));
+ },
+
+ beforeBlur : function() {
+ var me = this,
+ v = me.parseValue(me.getRawValue());
+
+ if (!Ext.isEmpty(v)) {
+ me.setValue(v);
+ }
+ },
+
+ onSpinUp: function() {
+ var me = this;
+ if (!me.readOnly) {
+ me.setValue(Ext.Number.constrain(me.getValue() + me.step, me.minValue, me.maxValue));
+ }
+ },
+
+ onSpinDown: function() {
+ var me = this;
+ if (!me.readOnly) {
+ me.setValue(Ext.Number.constrain(me.getValue() - me.step, me.minValue, me.maxValue));
+ }
+ }
+});
+