[Krang-CVS] [6174] Adding hook for an element class to modify the data during a clone() .

[<bra...@kr...>]

Revision: 6174
Author:   bradoaks
Date:     2009-06-15 00:56:50 -0400 (Mon, 15 Jun 2009)

Log Message:
-----------
Adding hook for an element class to modify the data during a clone().

We needed to get a new UUID for one of our elements and keep it from being a
duplicate of the value from the original story.

(I'm open to suggestions if you see something off about the way I've done this.)

Modified Paths:
--------------
    trunk/krang/lib/Krang/Element.pm
    trunk/krang/lib/Krang/ElementClass.pm

Modified: trunk/krang/lib/Krang/Element.pm
===================================================================
--- trunk/krang/lib/Krang/Element.pm	2009-06-12 22:28:45 UTC (rev 6173)
+++ trunk/krang/lib/Krang/Element.pm	2009-06-15 04:56:50 UTC (rev 6174)
@@ -1033,6 +1033,11 @@
     for (@{$clone->{children}}) {
         $_->parent($clone);
     }
+
+    # allow element class to modify this element's data if needed during clone
+    my $class = $clone->class;
+    $class->clone_hook(data => $clone->data());
+
     return $clone;
 }
 

Modified: trunk/krang/lib/Krang/ElementClass.pm
===================================================================
--- trunk/krang/lib/Krang/ElementClass.pm	2009-06-12 22:28:45 UTC (rev 6173)
+++ trunk/krang/lib/Krang/ElementClass.pm	2009-06-15 04:56:50 UTC (rev 6174)
@@ -1366,6 +1366,15 @@
     return $self;
 }
 
+=item C<< $class->clone_hook(element => $element) >>
+
+Called after the story/category containing the element tree is cloned and just
+before it is saved.  The default implementation does nothing.
+
+=cut
+
+sub clone_hook { }
+
 #
 # $url = _build_page_url(publisher => $pub, page => $page_num, protocol => 'https://');
 #