How to get the return value of a clicked button using NSAlert - applescript-objc

Question

I am using the following:
tell current application's NSAlert's alloc's init()
its setMessageText:"Alert test"
its setInformativeText:"This is a test"
its setAlertStyle:2
its setShowsSuppressionButton:true
its addButtonWithTitle:"Cancel"
its addButtonWithTitle:"Replace"
its beginSheetModalForWindow:theWindow modalDelegate:me didEndSelector:(missing value) contextInfo:(missing value)
end tell
I would like to know how do I get the value of the clicked button including "Suppression Button".
thanks advance!

Answer 1

Using the NSAlert+MyriadHelpers category from Myriad Helpers, you can use the showOverWithSuppress:calling: method. Using Xcode’s default AppleScript application project and adding the category .h and .m files to it, an example would be something like:
property suppressed : false
on applicationWillFinishLaunching:aNotification
tell current application's NSUserDefaults's standardUserDefaults
its registerDefaults:{SuppressAlert:suppressed}
set my suppressed to its objectForKey:"SuppressAlert"
end tell
set state to ""
if not suppressed then set state to "not "
set response to (display dialog "Example alert is currently " & state & "suppressed." buttons {"Clear", "Set", "Continue"} default button 3)
if button returned of response is "Set" then
set my suppressed to true
else if button returned of response is "Clear" then
set my suppressed to false
end if
doAlert()
end applicationWillFinishLaunching:
on doAlert()
log "performing doAlert() handler"
if suppressed then return -- skip it
tell current application's NSAlert's alloc's init()
its setMessageText:"Alert test"
its setInformativeText:"This is a test"
its setAlertStyle:2
its setShowsSuppressionButton:true
its addButtonWithTitle:"Cancel"
its addButtonWithTitle:"Replace"
its showOverWithSuppress:theWindow calling:"alertDidEnd:"
end tell
end doAlert
on alertDidEnd:response
set buttonName to (first item of response) as text
if buttonName = "Cancel" then display alert "Cancel button clicked!"
set my suppressed to (second item of response) as boolean
end alertDidEnd:
on applicationShouldTerminate:sender
tell current application's NSUserDefaults's standardUserDefaults
its setObject:suppressed forKey:"SuppressAlert" — update
end tell
return current application's NSTerminateNow
end applicationShouldTerminate: