Add close project into menu

Add option to close the current project into file menu. When project
is closed, reset the UI into initial state and show startup dialog.

Task-number: QT3DS-3549
Change-Id: Icd8f477189a9f89b84d3c8abe75bd26df7fbde8f
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

2 files changed, 8 insertions, 0 deletions

diff --git a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineWidget.cpp b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineWidget.cpp
index d37825cb..967da5cb 100644
--- a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineWidget.cpp
+++ b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineWidget.cpp
@@ -418,12 +418,18 @@ void TimelineWidget::OnNewPresentation()
 
     // Reset timeline time
     OnTimeChanged(0);
+
+    // Show timeline widget when presentation is available
+    setVisible(true);
 }
 
 void TimelineWidget::OnClosingPresentation()
 {
     m_connections.clear();
     m_graphicsScene->expandMap().clear();
+
+    // Hide timeline widget when presentation is closed
+    setVisible(false);
 }
 
 void TimelineWidget::OnTimeChanged(long inTime)
diff --git a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/TimelineToolbar.cpp b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/TimelineToolbar.cpp
index 05d24fa6..a4f41026 100644
--- a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/TimelineToolbar.cpp
+++ b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/TimelineToolbar.cpp
@@ -283,6 +283,8 @@ bool TimelineToolbar::isVariantsFilterOn() const
 void TimelineToolbar::updateDataInputStatus()
 {
     CDoc *doc = g_StudioApp.GetCore()->GetDoc();
+    if (!doc->isValid())
+        return;
     qt3dsdm::Qt3DSDMPropertyHandle ctrldProp;
     qt3dsdm::Qt3DSDMInstanceHandle timeCtxRoot = doc->GetActiveRootInstance();
     CClientDataModelBridge *theClientBridge = doc->GetStudioSystem()->GetClientDataModelBridge();