HG_REPOSITORIES/LPP/SciQLOP_Repos/SciQLop Commit - r876:da9523540c62

prevent dropping an variable without data in the visu

trabillard -

r876:da9523540c62

parent child

Context file:

r876:da9523540c62

gui/src/DragDropHelper.cpp +28 -11

             #include "Visualization/VisualizationWidget.h"
             #include "Visualization/operations/FindVariableOperation.h"
+            #include "Variable/Variable.h"
             #include "Variable/VariableController.h"
             #include "Common/MimeTypesDef.h"
                     sqpApp->installEventFilter(m_DragDropScroller.get());
-                    m_ImageTempUrl = QDir::temp().absoluteFilePath("Scqlop_graph.png");
+                    m_ImageTempUrl = QDir::temp().absoluteFilePath("Sciqlop_graph.png");
                 }
                 void preparePlaceHolder() const
                     qCWarning(LOG_DragDropHelper()) << QObject::tr(
                         "DragDropHelper::checkMimeDataForVisualization, invalid input parameters.");
                     Q_ASSERT(false);
+                    return false;
                 }
-                auto result = true;
+                auto result = false;
                 if (mimeData->hasFormat(MIME_TYPE_VARIABLE_LIST)) {
                     auto variables = sqpApp->variableController().variablesForMimeData(
                         mimeData->data(MIME_TYPE_VARIABLE_LIST));
                     if (variables.count() == 1) {
-                        // Check that the viariable is not already in a graph
-                        // Search for the top level VisualizationWidget
+                        auto variable = variables.first();
+                        if (variable->dataSeries() != nullptr) {
+                            // Check that the variable is not already in a graph
                             auto parent = dropContainer->parentWidget();
                             while (parent && qobject_cast<VisualizationWidget *>(parent) == nullptr) {
-                            parent = parent->parentWidget();
+                                parent = parent->parentWidget(); // Search for the top level VisualizationWidget
                             }
                             if (parent) {
                                 auto visualizationWidget = static_cast<VisualizationWidget *>(parent);
-                            FindVariableOperation findVariableOperation{variables.first()};
+                                FindVariableOperation findVariableOperation{variable};
                                 visualizationWidget->accept(&findVariableOperation);
                                 auto variableContainers = findVariableOperation.result();
-                            if (!variableContainers.empty()) {
+                                if (variableContainers.empty()) {
-                                result = false;
+                                    result = true;
+                                }
+                                else {
+                                    // result = false: the variable already exist in the visualisation
                                 }
                             }
                             else {
                                 qCWarning(LOG_DragDropHelper()) << QObject::tr(
                                     "DragDropHelper::checkMimeDataForVisualization, the parent "
-                                "VisualizationWidget cannot be found.");
+                                    "VisualizationWidget cannot be found. Cannot check if the variable is "
-                            result = false;
+                                    "already used or not.");
                             }
                         }
                         else {
-                        result = false;
+                            // result = false: the variable is not fully loaded
                         }
                     }
+                    else {
+                        // result = false: cannot drop multiple variables in the visualisation
+                    }
+                }
+                else {
+                    // Other MIME data
+                    // no special rules, accepted by default
+                    result = true;
+                }
                 return result;
             }

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