Cleaner way of invoking callback

AVRsack.xcodeproj/project.pbxproj

@@ -17,6 +17,7 @@
 		951CD1741A23C9FC0066C1A1 /* ASBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = 951CD1731A23C9FC0066C1A1 /* ASBuilder.swift */; };
 		951CD1771A2615000066C1A1 /* BuildProject in Resources */ = {isa = PBXBuildFile; fileRef = 951CD1761A2615000066C1A1 /* BuildProject */; };
 		95388E5D1AB6882600061435 /* FileRevision in Resources */ = {isa = PBXBuildFile; fileRef = 95388E5C1AB6882600061435 /* FileRevision */; };
+		95388E621AB7235000061435 /* ASVestigial.mm in Sources */ = {isa = PBXBuildFile; fileRef = 95388E611AB7235000061435 /* ASVestigial.mm */; };
 		9538E0EC1A8FB215001E02CC /* ACEView.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = 95EA325B1A17B8DA00F66EB0 /* ACEView.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		95468DDF1A228BE600668EE2 /* ASHardware.swift in Sources */ = {isa = PBXBuildFile; fileRef = 95468DDE1A228BE600668EE2 /* ASHardware.swift */; };
 		95468DE31A228E1300668EE2 /* Defaults.plist in Resources */ = {isa = PBXBuildFile; fileRef = 95468DE21A228E1300668EE2 /* Defaults.plist */; };
@@ -104,6 +105,8 @@
 		951CD1731A23C9FC0066C1A1 /* ASBuilder.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ASBuilder.swift; sourceTree = "<group>"; };
 		951CD1761A2615000066C1A1 /* BuildProject */ = {isa = PBXFileReference; explicitFileType = text.script.ruby; fileEncoding = 4; path = BuildProject; sourceTree = "<group>"; };
 		95388E5C1AB6882600061435 /* FileRevision */ = {isa = PBXFileReference; explicitFileType = text.script.ruby; fileEncoding = 4; path = FileRevision; sourceTree = "<group>"; };
+		95388E601AB7235000061435 /* ASVestigial.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ASVestigial.h; sourceTree = "<group>"; };
+		95388E611AB7235000061435 /* ASVestigial.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ASVestigial.mm; sourceTree = "<group>"; };
 		95468DDE1A228BE600668EE2 /* ASHardware.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ASHardware.swift; sourceTree = "<group>"; };
 		95468DE21A228E1300668EE2 /* Defaults.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Defaults.plist; sourceTree = "<group>"; };
 		95539B661A3E7EAF00D8595C /* ASSerial.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ASSerial.h; sourceTree = "<group>"; };
@@ -219,6 +222,8 @@
 				95DF20661A45A6090013D1B5 /* ASSketchBook.swift */,
 				956005F21A4EF79D00327007 /* ASSerialWin.swift */,
 				95DA9B151A515AF700DE018D /* ACEViewExt.swift */,
+				95388E601AB7235000061435 /* ASVestigial.h */,
+				95388E611AB7235000061435 /* ASVestigial.mm */,
 			);
 			name = Source;
 			sourceTree = "<group>";
@@ -409,6 +414,7 @@
 			files = (
 				956005F41A4EF79D00327007 /* ASSerialWin.swift in Sources */,
 				9501D8041A17025C0034C530 /* ASProjDoc.swift in Sources */,
+				95388E621AB7235000061435 /* ASVestigial.mm in Sources */,
 				95539B681A3E7EAF00D8595C /* ASSerial.mm in Sources */,
 				95468DDF1A228BE600668EE2 /* ASHardware.swift in Sources */,
 				95DA9B161A515AF700DE018D /* ACEViewExt.swift in Sources */,

AVRsack/ASProjDoc.swift

@@ -284,14 +284,9 @@ class ASProjDoc: NSDocument, NSOutlineViewDelegate, NSMenuDelegate, NSOpenSavePa
     // MARK: Printing
 
     override func printDocumentWithSettings(printSettings: [NSObject : AnyObject], showPrintPanel: Bool, delegate: AnyObject?, didPrintSelector: Selector, contextInfo: UnsafeMutablePointer<Void>) {
-        //
-        // Thanks to Erica Sadun for showing me how to call a selector in Swift
-        //
         printingDone =
             { () -> () in
-                if let del : AnyObject = delegate {
+                InvokeCallback(delegate, didPrintSelector, contextInfo);
-                    NSThread.detachNewThreadSelector(didPrintSelector, toTarget: del, withObject: contextInfo as? AnyObject)
-                }
             }
         if let logNode = mainEditor as? ASLogNode {
             let url = fileURL!.URLByDeletingLastPathComponent?.URLByAppendingPathComponent(logNode.path)

AVRsack/ASVestigial.h

@@ -0,0 +1,20 @@
+//
+//  ASVestigial.h
+//  AVRsack
+//
+//  Created by Matthias Neeracher on 16/03/15.
+//  Copyright © 2015 Aere Perennius. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void
+InvokeCallback(id target, SEL selector, void * context);
+
+#ifdef __cplusplus
+}
+#endif

AVRsack/ASVestigial.mm

@@ -0,0 +1,20 @@
+//
+//  ASVestigial.m
+//  AVRsack
+//
+//  Created by Matthias Neeracher on 16/03/15.
+//  Copyright © 2015 Aere Perennius. All rights reserved.
+//
+
+#import "ASVestigial.h"
+
+void
+InvokeCallback(id target, SEL selector, void * context)
+{
+    if (!target)
+        return;
+    NSMethodSignature * sig   = [target methodSignatureForSelector:selector];
+    NSInvocation * invocation = [NSInvocation invocationWithMethodSignature:sig];
+    [invocation setArgument:&context atIndex:2];
+    [invocation invokeWithTarget:target];
+}

AVRsack/AVRsack-Bridging-Header.h

@@ -6,3 +6,4 @@
 #import <ACEView/ACEKeyboardHandlerNames.h>
 
 #import "ASSerial.h"
+#import "ASVestigial.h"