TechDraw: InsertView switch the MDI to page when triggered.

src/Mod/TechDraw/Gui/Command.cpp

@@ -314,6 +314,14 @@ void CmdTechDrawView::activated(int iMsg)
     }
     std::string PageName = page->getNameInDocument();
 
+    // switch to the page if it's not current active window
+    auto* vpp = dynamic_cast<ViewProviderPage*>
+        (Gui::Application::Instance->getViewProvider(page));
+    if (vpp) {
+        vpp->switchToMdiViewPage();
+    }
+
+
     //set projection direction from selected Face
     //use first object with a face selected
     std::vector<App::DocumentObject*> shapes, xShapes;

src/Mod/TechDraw/Gui/ViewProviderPage.cpp

@@ -275,7 +275,7 @@ bool ViewProviderPage::doubleClicked(void)
 
     show();
     if (m_mdiView) {
-        Gui::getMainWindow()->setActiveWindow(m_mdiView);
+        switchToMdiViewPage();
     }
     return true;
 }
@@ -339,6 +339,11 @@ void ViewProviderPage::createMDIViewPage()
     m_mdiView->setWindowTitle(tabTitle + QString::fromLatin1("[*]"));
     m_mdiView->setWindowIcon(Gui::BitmapFactory().pixmap("TechDraw_TreePage"));
     Gui::getMainWindow()->addWindow(m_mdiView);
+    switchToMdiViewPage();
+}
+
+void ViewProviderPage::switchToMdiViewPage()
+{
     Gui::getMainWindow()->setActiveWindow(m_mdiView);
     m_graphicsView->setFocus();
 }

src/Mod/TechDraw/Gui/ViewProviderPage.h

@@ -107,6 +107,7 @@ public:
     MDIViewPage* getMDIViewPage() const;
     bool showMDIViewPage();
     void removeMDIView();
+    void switchToMdiViewPage();
 
     Gui::MDIView* getMDIView() const override;