Fixed: CPOutlineView could not be archived with CPCoding. Closes #1093.

This fixes the exception "[_CPOutlineViewTableViewDataSource encodeWithCoder:] unrecognized selector sent to instance".

AppKit/CPOutlineView.j

@@ -1829,7 +1829,14 @@ var CPOutlineViewIndentationPerLevelKey = @"CPOutlineViewIndentationPerLevelKey"
 
 - (void)encodeWithCoder:(CPCoder)aCoder
 {
+    // Make sure we don't encode our internal delegate and data source.
+    var internalDelegate = _delegate,
+        internalDataSource = _dataSource;
+    _delegate = nil;
+    _dataSource = nil;
     [super encodeWithCoder:aCoder];
+    _delegate = internalDelegate;
+    _dataSource = internalDataSource;
 
     [aCoder encodeObject:_outlineTableColumn forKey:CPOutlineViewOutlineTableColumnKey];
     [aCoder encodeFloat:_indentationPerLevel forKey:CPOutlineViewIndentationPerLevelKey];

Tests/AppKit/CPOutlineViewTest.j

@@ -138,6 +138,16 @@
     [self assert:1 equals:[delegate selectionChangeCount] message:"selection notifications during expandItem"];
 }
 
+/*!
+    Test that the outline view is properly careful about not encoding its
+    non-encodable delegate and data source.
+*/
+- (void)testCoding
+{
+    // This should simply not crash.
+    var decoded = [CPKeyedUnarchiver unarchiveObjectWithData:[CPKeyedArchiver archivedDataWithRootObject:outlineView]];
+}
+
 @end
 
 @implementation TestDataSource : CPObject
@@ -179,6 +189,23 @@
     return theItem;
 }
 
+- (id)initWithCoder:(CPCoder)aCoder
+{
+    self = [super init];
+
+    if (self)
+    {
+        entries = [aCoder decodeObjectForKey:"entries"];
+    }
+
+    return self;
+}
+
+- (void)encodeWithCoder:(CPCoder)aCoder
+{
+    [aCoder encodeObject:entries forKey:"entries"];
+}
+
 @end
 
 @implementation TestNotificationsDelegate : CPObject