From 6e24103b73ed831e30f0513658298dc31abd4ba7 Mon Sep 17 00:00:00 2001
From: Manuel Rego Casasnovas <rego@igalia.com>
Date: Tue, 20 Nov 2012 17:24:08 +0100
Subject: [PATCH] Bug #1566: Do not launch exception in MonteCarlo view is
 critical path is only a milestone

In the MonteCarlo perspective the critical paths were appear empty and the
button to calculate it will be disabled.

FEA: ItEr77S04BugFixing
---
 .../org/libreplan/web/montecarlo/MonteCarloController.java     | 3 ++-
 .../java/org/libreplan/web/montecarlo/MonteCarloModel.java     | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloController.java b/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloController.java
index ec2ed2a4d..543ca66ff 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloController.java
@@ -301,7 +301,8 @@ public class MonteCarloController extends GenericForwardComposer {
             feedCriticalPathsList();
             reloadGridCritialPathTasks();
         }
-        btnRunMonteCarlo.setDisabled(criticalPath.isEmpty());
+        btnRunMonteCarlo.setDisabled(monteCarloModel.getCriticalPathNames()
+                .isEmpty());
     }
 
     private static class CriticalPathTasksRender implements RowRenderer {
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloModel.java
index 6fbc6fd56..4d6cd2c4e 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/montecarlo/MonteCarloModel.java
@@ -84,6 +84,9 @@ public class MonteCarloModel implements IMonteCarloModel {
             return;
         }
         this.tasksInCriticalPath = onlyTasks(tasksInCriticalPath);
+        if (this.tasksInCriticalPath.isEmpty()) {
+            return;
+        }
         Collections.sort(this.tasksInCriticalPath, Task.getByStartDateComparator());
         initializeTasksInOrder(getOrderFor(this.tasksInCriticalPath));
         initializeOrderNameFor(this.tasksInCriticalPath);