# HG changeset patch
# User Thinker K.F. Li <thinker@codemud.net>
# Date 1302155107 -28800
# Node ID 3519f43da037b6709303bc2191e3817443dd21a1
# Parent  485cca025a77c261e0ca708f11d8f00d8f43dcfb
Check old component before hiding it for a component switching.

Ref: ticket #37 in assembla

 - Scribboo try to hide old component before switching to new one.
   But, old one was already removed.  It cause an error.
 - This is fixed by checking old component if it is still existed
   before hiding it.

diff -r 485cca025a77 -r 3519f43da037 pyink/domview.py
--- a/pyink/domview.py	Thu Apr 07 11:56:18 2011 +0800
+++ b/pyink/domview.py	Thu Apr 07 13:45:07 2011 +0800
@@ -474,7 +474,17 @@
         first_name = comp.all_timeline_names()[0]
         self.switch_timeline(first_name)
 
-        self.hide_component(old_comp.name())
+        try:
+            comp_grp = self.get_component_group(old_comp.name())
+            old_comp_existed = True
+        except ValueError:
+            old_comp_existed = False
+            pass
+        
+        if old_comp_existed:
+            self.hide_component(old_comp.name())
+            pass
+        
         self.show_component(comp.name())
         pass