From 9e8c979f3e910759152ea8ea19908341c1df3e56 2017-07-04 07:40:34
From: Alexandre Leroux <aleroux@itlink.fr>
Date: 2017-07-04 07:40:34
Subject: [PATCH] Variable deletion (6)

Creates the signal that prevents other controllers that a variable will be deleted from the VariableController

---

diff --git a/core/include/Visualization/VisualizationController.h b/core/include/Visualization/VisualizationController.h
index 9664fe6..97937e6 100644
--- a/core/include/Visualization/VisualizationController.h
+++ b/core/include/Visualization/VisualizationController.h
@@ -26,6 +26,8 @@ public:
     virtual ~VisualizationController();
 
 signals:
+    /// Signal emitted when a variable is about to be deleted from SciQlop
+    void variableAboutToBeDeleted(std::shared_ptr<Variable> variable);
     /// Signal emitted when a variable has been created in SciQlop
     void variableCreated(std::shared_ptr<Variable> variable);
 
diff --git a/core/src/Variable/VariableController.cpp b/core/src/Variable/VariableController.cpp
index b156724..c0c8034 100644
--- a/core/src/Variable/VariableController.cpp
+++ b/core/src/Variable/VariableController.cpp
@@ -89,6 +89,9 @@ void VariableController::deleteVariable(std::shared_ptr<Variable> variable) noex
         return;
     }
 
+    // Spreads in SciQlop that the variable will be deleted, so that potential receivers can
+    // make some treatments before the deletion
+    emit variableAboutToBeDeleted(variable);
 
     // Deletes provider
     auto nbProvidersDeleted = impl->m_VariableToProviderMap.erase(variable);