Assembly: prevent assembly collapse when editing sketch. (#26956)

* Gui: View provider: isAutoCollapseOnDeactivation

* Update ViewProvider.h

* Update ActiveObjectList.cpp

* Update ViewProviderAssembly.cpp

* Update ActiveObjectList.cpp

src/Gui/ActiveObjectList.cpp

@@ -73,7 +73,7 @@ void ActiveObjectList::setHighlight(const ObjectInfo& info, HighlightMode mode,
         return;
     }
 
-    if (TreeParams::getTreeActiveAutoExpand()) {
+    if (TreeParams::getTreeActiveAutoExpand() && (enable || vp->isAutoCollapseOnDeactivation())) {
         vp->getDocument()->signalExpandObject(
             *vp,
             enable ? TreeItemMode::ExpandPath : TreeItemMode::CollapseItem,

src/Gui/ViewProvider.h

@@ -445,6 +445,11 @@ public:
     {
         return true;
     }
+    /** Tell if the tree item should be auto collapsed*/
+    bool isAutoCollapseOnDeactivation() const
+    {
+        return autoCollapseOnDeactivation;
+    }
 
     /** @name Signals of the view provider */
     //@{
@@ -707,6 +712,7 @@ protected:
     /// The root separator for annotations
     SoSeparator* pcAnnotation {nullptr};
     ViewProviderPy* pyViewObject {nullptr};
+    bool autoCollapseOnDeactivation {true};
     std::string overrideMode;
     std::bitset<32> StatusBits;
     /// whether visibility can toggled

src/Mod/Assembly/Gui/ViewProviderAssembly.cpp

@@ -152,6 +152,7 @@ void ViewProviderAssembly::setupContextMenu(QMenu* menu, QObject* receiver, cons
 bool ViewProviderAssembly::doubleClicked()
 {
     if (isInEditMode()) {
+        autoCollapseOnDeactivation = true;
         getDocument()->resetEdit();
     }
     else {
@@ -280,6 +281,7 @@ bool ViewProviderAssembly::setEdit(int mode)
     if (mode == ViewProvider::Default) {
         // Ask that this edit mode be restored. For example if it is quit to edit a sketch.
         getDocument()->setEditRestore(true);
+        autoCollapseOnDeactivation = false;
 
         // Set the part as 'Activated' ie bold in the tree.
         Gui::Command::doCommand(