EXT的月份选择器

Ext.define('Ext.ux.form.MonthField', {
extend: 'Ext.form.field.Picker',
alias: 'widget.monthfield',
format: "Y-m",
altFormats: "m/y|m/Y|m-y|m-Y|my|mY|y/m|Y/m|y-m|Y-m|ym|Ym",
triggerCls: Ext.baseCSSPrefix + 'form-date-trigger',
matchFieldWidth: false,
startDay: new Date(),
initComponent: function () {
var me = this;
me.disabledDatesRE = null;
me.callParent();
},

initValue: function () {
var me = this,
value = me.value;
if (Ext.isString(value)) {
me.value = Ext.Date.parse(value, this.format);
}
if (me.value)
me.startDay = me.value;
me.callParent();
},

rawToValue: function (rawValue) {
return Ext.Date.parse(rawValue, this.format) || rawValue || null;
},
valueToRaw: function (value) {
return this.formatDate(value);
},
formatDate: function (date) {
return Ext.isDate(date) ? Ext.Date.dateFormat(date, this.format) : date;
},
createPicker: function () {
var me = this,
format = Ext.String.format;
return Ext.create('Ext.picker.Month', {
pickerField: me,
ownerCt: me.ownerCt,
renderTo: document.body,
floating: true,
shadow: false,
height: 200,
focusOnShow: true,
listeners: {
scope: me,
cancelclick: me.onCancelClick,
okclick: me.onOkClick,
yeardblclick: me.onOkClick,
monthdblclick: me.onOkClick
}
});
},
onExpand: function () {
this.picker.setValue(this.startDay);

},
onOkClick: function (picker, value) {
var me = this,
month = value[0],
year = value[1],
date = new Date(year, month, 1);
me.startDay = date;
me.setValue(date);
this.picker.hide();
},
onCancelClick: function () {
this.picker.hide();
}
});