Core: PropertyEditor : save properly the size of the first column.

src/Gui/PropertyView.cpp

@@ -67,7 +67,7 @@ static ParameterGrp::handle _GetParam() {
  * Provides two Gui::PropertyEditor::PropertyEditor widgets, for "View" and "Data",
  * in two tabs.
  */
-PropertyView::PropertyView(QWidget *parent, int sizeOfFirstColumn)
+PropertyView::PropertyView(QWidget *parent)
   : QWidget(parent), SelectionObserver(false, ResolveMode::NoResolve)
 {
     auto pLayout = new QGridLayout( this );
@@ -83,12 +83,12 @@ PropertyView::PropertyView(QWidget *parent, int sizeOfFirstColumn)
     tabs->setTabPosition(QTabWidget::South);
     pLayout->addWidget(tabs, 0, 0);
 
-    propertyEditorView = new Gui::PropertyEditor::PropertyEditor(parent, sizeOfFirstColumn);
+    propertyEditorView = new Gui::PropertyEditor::PropertyEditor();
     propertyEditorView->setAutomaticDocumentUpdate(_GetParam()->GetBool("AutoTransactionView", false));
     propertyEditorView->setAutomaticExpand(_GetParam()->GetBool("AutoExpandView", false));
     tabs->addTab(propertyEditorView, tr("View"));
 
-    propertyEditorData = new Gui::PropertyEditor::PropertyEditor(parent, sizeOfFirstColumn);
+    propertyEditorData = new Gui::PropertyEditor::PropertyEditor();
     propertyEditorData->setAutomaticDocumentUpdate(_GetParam()->GetBool("AutoTransactionData", true));
     propertyEditorData->setAutomaticExpand(_GetParam()->GetBool("AutoExpandData", false));
     tabs->addTab(propertyEditorData, tr("Data"));

src/Gui/PropertyView.h

@@ -56,7 +56,7 @@ class PropertyView : public QWidget, public Gui::SelectionObserver
     Q_OBJECT
 
 public:
-    explicit PropertyView(QWidget *parent=nullptr, int sizeOfFirstColumn = 0);
+    explicit PropertyView(QWidget *parent=nullptr);
     ~PropertyView() override;
 
     Gui::PropertyEditor::PropertyEditor* propertyEditorView;

src/Gui/Tree.cpp

@@ -61,7 +61,6 @@
 #include "Macro.h"
 #include "MainWindow.h"
 #include "MenuManager.h"
-#include "PropertyView.h"
 #include "TreeParams.h"
 #include "View3DInventor.h"
 #include "ViewProviderDocumentObject.h"
@@ -891,7 +890,8 @@ void TreeWidget::contextMenuEvent(QContextMenuEvent* e)
     QMenu editMenu;
     QActionGroup subMenuGroup(&subMenu);
     subMenuGroup.setExclusive(true);
-    connect(&subMenuGroup, &QActionGroup::triggered, this, &TreeWidget::onActivateDocument);
+    connect(&subMenuGroup, &QActionGroup::triggered,
+            this, &TreeWidget::onActivateDocument);
     MenuManager::getInstance()->setupContextMenu(&view, contextMenu);
 
     // get the current item

src/Gui/propertyeditor/PropertyEditor.cpp

@@ -51,7 +51,7 @@ FC_LOG_LEVEL_INIT("PropertyView", true, true)
 
 using namespace Gui::PropertyEditor;
 
-PropertyEditor::PropertyEditor(QWidget *parent, int sizeOfFirstColumn)
+PropertyEditor::PropertyEditor(QWidget *parent)
     : QTreeView(parent)
     , autoexpand(false)
     , autoupdate(false)
@@ -100,8 +100,10 @@ PropertyEditor::PropertyEditor(QWidget *parent, int sizeOfFirstColumn)
     viewport()->installEventFilter(this);
     viewport()->setMouseTracking(true);
 
-    if (sizeOfFirstColumn != 0) {
-        header()->resizeSection(0, sizeOfFirstColumn);
+    auto hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/DockWindows/PropertyView");
+    int firstColumnSize = hGrp->GetInt("FirstColumnSize", 0);
+    if (firstColumnSize != 0) {
+        header()->resizeSection(0, firstColumnSize);
     }
 }
 
@@ -872,6 +874,9 @@ bool PropertyEditor::eventFilter(QObject* object, QEvent* event) {
             else if (mouse_event->type() == QEvent::MouseButtonRelease &&
                 mouse_event->button() == Qt::LeftButton && dragInProgress) { 
                 dragInProgress = false;
+
+                auto hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/DockWindows/PropertyView");
+                hGrp->SetInt("FirstColumnSize", header()->sectionSize(0));
                 return true;
             }
         }

src/Gui/propertyeditor/PropertyEditor.h

@@ -67,7 +67,7 @@ class PropertyEditor : public QTreeView
     Q_PROPERTY(QBrush itemBackground READ itemBackground WRITE setItemBackground DESIGNABLE true SCRIPTABLE true) // clazy:exclude=qproperty-without-notify
 
 public:
-    PropertyEditor(QWidget *parent = nullptr, int sizeOfFirstColumn = 0);
+    PropertyEditor(QWidget *parent = nullptr);
     ~PropertyEditor() override;
 
     /** Builds up the list view with the properties. */