zenity/internal/zenutil/osascripts/date.gojs

var app = Application.currentApplication()
app.includeStandardAdditions = true
app.activate()

ObjC.import('Cocoa')
ObjC.import('stdio')
ObjC.import('stdlib')

var date = $.NSDatePicker.alloc.init
date.setDatePickerStyle($.NSDatePickerStyleClockAndCalendar)
date.setDatePickerElements($.NSDatePickerElementFlagYearMonthDay)
date.setFrameSize(date.fittingSize)
{{- if .Date}}
  date.setDateValue($.NSDate.dateWithTimeIntervalSince1970({{.Date}}))
{{- end}}

var alert = $.NSAlert.alloc.init
alert.setAccessoryView(date)
alert.setMessageText({{json .Text}})
alert.addButtonWithTitle({{json .OK}})
alert.addButtonWithTitle({{json .Cancel}}).keyEquivalent = '\033'
{{- if .Info}}
  alert.setInformativeText({{json .Info}})
{{- end}}
{{- if .Extra}}
  alert.addButtonWithTitle({{json .Extra}})
{{- end}}

var res = alert.runModal
switch (res) {
case $.NSAlertThirdButtonReturn:
  $.puts({{json .Extra}})
case $.NSAlertSecondButtonReturn:
  $.exit(1)
}

var fmt = $.NSDateFormatter.alloc.init
fmt.locale = $.NSLocale.localeWithLocaleIdentifier('en_US_POSIX')
fmt.dateFormat = {{json .Format}}
fmt.stringFromDate(date.dateValue)