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Correction for the case where steps being sorted do not have position data (workflow extraction from history, for example), so we do need to check.

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Dannon Baker
2011-01-18 15:37:08 -05:00
parent 01d15a1e6f
commit f940a5914f
1 changed files with 6 additions and 1 deletions
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lib/galaxy/web/controllers/workflow.py
+6 -1
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@@ -1670,7 +1670,12 @@ def order_workflow_steps( steps ):
"""
Perform topological sort of the steps, return ordered or None
"""
steps.sort(cmp=lambda s1,s2: cmp( math.sqrt(s1.position['left']**2 + s1.position['top']**2), math.sqrt(s2.position['left']**2 + s2.position['top']**2)))
position_data_available = True
for step in steps:
if not step.position or not 'left' in step.position or not 'top' in step.position:
position_data_available = False
if position_data_available:
steps.sort(cmp=lambda s1,s2: cmp( math.sqrt(s1.position['left']**2 + s1.position['top']**2), math.sqrt(s2.position['left']**2 + s2.position['top']**2)))
try:
edges = edgelist_for_workflow_steps( steps )
node_order = topsort( edges )