use AppleScript version "2.3.1"
use scripting additions
use framework "Foundation"
use framework "AppKit"
use script "BridgePlus" -- for pre-10.11 compatibility
if not (current application's NSThread's isMainThread()) as boolean then
display alert "This script must be run from the main thread." buttons {"Cancel"} as critical
error number -128
end if
-- create a view
set theView to current application's NSView's alloc()'s initWithFrame:(current application's NSMakeRect(0, 0, 100, 200))
-- create date picker
set datePicker to current application's NSDatePicker's alloc()'s initWithFrame:(current application's NSMakeRect(0, 0, 100, 100))
-- set style: choices are NSTextFieldAndStepperDatePickerStyle, NSClockAndCalendarDatePickerStyle, or NSTextFieldDatePickerStyle
datePicker's setDatePickerStyle:(current application's NSClockAndCalendarDatePickerStyle)
-- set elements: choices include NSHourMinuteDatePickerElementFlag, NSHourMinuteSecondDatePickerElementFlag, NSTimeZoneDatePickerElementFlag, NSYearMonthDatePickerElementFlag, and NSEraDatePickerElementFlag
datePicker's setDatePickerElements:((current application's NSYearMonthDayDatePickerElementFlag) + (current application's NSHourMinuteSecondDatePickerElementFlag as integer))
-- set initial date
datePicker's setDateValue:(current application's NSDate's |date|())
-- get the size it needs
set theSize to datePicker's fittingSize()
--resize the picker and view accordingly
theView's setFrameSize:theSize
datePicker's setFrameSize:theSize
-- add the picker to the view
theView's setSubviews:{datePicker}
-- create an alert
set theAlert to current application's NSAlert's alloc()'s init()
-- set up alert
tell theAlert
its setMessageText:"Pick a date"
its setInformativeText:"Any date"
its addButtonWithTitle:"OK"
its addButtonWithTitle:"Cancel"
its setAccessoryView:theView
end tell
-- show alert in modal loop
set returnCode to theAlert's runModal()
if returnCode = (current application's NSAlertSecondButtonReturn) then error number -128
-- retrieve date
set theDate to ASify from (datePicker's dateValue()) -- or simply coerce to date in 10.11