From 668152fa53c6b93d14f6ec2fda7833ea220763d0 Mon Sep 17 00:00:00 2001
From: nds <nds@opencascade.com>
Date: Fri, 29 Apr 2016 17:14:10 +0300
Subject: [PATCH] implementation "clear_in_neutral_point" for multi-selection
 control

---
 src/ModuleBase/ModuleBase_WidgetMultiSelector.cpp | 13 +++++++++++++
 src/ModuleBase/ModuleBase_WidgetMultiSelector.h   |  7 +++++++
 2 files changed, 20 insertions(+)

diff --git a/src/ModuleBase/ModuleBase_WidgetMultiSelector.cpp b/src/ModuleBase/ModuleBase_WidgetMultiSelector.cpp
index 180f0ee8b..2e0c7e0ea 100755
--- a/src/ModuleBase/ModuleBase_WidgetMultiSelector.cpp
+++ b/src/ModuleBase/ModuleBase_WidgetMultiSelector.cpp
@@ -156,6 +156,8 @@ ModuleBase_WidgetMultiSelector::ModuleBase_WidgetMultiSelector(QWidget* theParen
 
   myListControl->setContextMenuPolicy(Qt::ActionsContextMenu);
   connect(myListControl, SIGNAL(itemSelectionChanged()), SLOT(onListSelection()));
+
+  myIsNeutralPointClear = theData->getBooleanAttribute("clear_in_neutral_point", true);
 }
 
 ModuleBase_WidgetMultiSelector::~ModuleBase_WidgetMultiSelector()
@@ -379,6 +381,17 @@ void ModuleBase_WidgetMultiSelector::onSelectionTypeChanged()
   myWorkshop->setSelected(anEmptyList);
 }
 
+//********************************************************************
+void ModuleBase_WidgetMultiSelector::onSelectionChanged()
+{
+  if (!myIsNeutralPointClear) {
+    QList<ModuleBase_ViewerPrsPtr> aSelected = getFilteredSelected();
+    if (aSelected.size() == 0)
+      return;
+  }
+  ModuleBase_WidgetSelector::onSelectionChanged();
+}
+
 void ModuleBase_WidgetMultiSelector::updateFocus()
 {
   // Set focus to List control in order to make possible 
diff --git a/src/ModuleBase/ModuleBase_WidgetMultiSelector.h b/src/ModuleBase/ModuleBase_WidgetMultiSelector.h
index 1fbc337c9..56aa91a23 100755
--- a/src/ModuleBase/ModuleBase_WidgetMultiSelector.h
+++ b/src/ModuleBase/ModuleBase_WidgetMultiSelector.h
@@ -89,6 +89,10 @@ public slots:
   /// Slot is called on selection type changed
   void onSelectionTypeChanged();
 
+  /// Slot which is called on selection event. Redefined to process XML state about
+  /// clear selection in neutral point
+  virtual void onSelectionChanged();
+
 protected slots:
   /// Slot for copy command in a list pop-up menu
   void onCopyItem();
@@ -182,6 +186,9 @@ protected:
 
   /// A flag to store use_choice parameter state
   bool myIsUseChoice;
+
+  /// A flag to clear selection by click in empty place in the viewer
+  bool myIsNeutralPointClear;
 };
 
 #endif /* MODULEBASE_WIDGETFILESELECTOR_H_ */
-- 
2.39.2