> On 16 Dec 2016, at 20:17, Jeremy Hughes <moon.rab...@virginmedia.com> wrote:
>>> I'm not an expert in this part of Cocoa. Are there implicit system
>>> *callers* of this method, or is it more of a system *utility* that you're
>>> expected to call from your own code? If it's the latter, then maybe
>>> instead of overriding it you should just provide a different method that
>>> calls it, doing whatever set up you need first and then passing in the
>>> appropriate delegate and selector to do cleanup.
>>
>> It’s just an application method, which overrides the method that the system
>> calls from printDocument when a user chooses Print.
Less confusingly: it’s a Document (subclass of NSDocument) method
> I could override printDocument, but I’m not sure how to get the printSettings
> that I need to pass through to printDocumentWithSettings. Looking at Apple's
> documentation, I think I can get these by calling dictionary() on an
> NSPrintInfo object. That returns an NSMutableDictionary, but the compiler
> won’t let me use this as a printSettings argument:
>
> "Cannot convert value of type 'NSMutableDictionary' to expected argument type
> '[String : AnyObject]’"
>
> Do I need to iterate through the NSMutableDictionary and create a Swift
> Dictionary from it?
>
> Maybe I’ve missed an easier way of doing this. All I want to happen is to be
> notified when the print operation is completed.
This is what I’ve currently got. It works OK, but the dictionary conversion
seems clunky to me.
override func printDocument(sender: AnyObject?)
{
let didPrintSelector = #selector(document(_:didPrint:contextInfo:))
let dictionary = printInfo.dictionary()
var printSettings = [String : AnyObject]()
for key in printInfo.dictionary().allKeys
{
if let string = key as? String
{
printSettings[string] = dictionary.valueForKey(string)
}
}
printDocumentWithSettings(printSettings, showPrintPanel: true,
delegate: self, didPrintSelector: didPrintSelector, contextInfo: nil)
}
Jeremy
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