QmlDesigner: Add some delays to material browser refreshing

Import change causes puppet to reset, so bit of delay is needed there
before triggering material browser refresh.
Also added similar delay to refresh done at model attach as it seems
puppet reset can sometimes be triggered after attach as well.

Fixes: QDS-7172
Change-Id: I47f7af54e55af074fb2b9e8cdb9e78fb051a16cc
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

1 files changed, 15 insertions, 2 deletions

diff --git a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
index 1af67d4fef..c0e0f9ad3c 100644
--- a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
+++ b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
@@ -97,7 +97,10 @@ void MaterialBrowserView::modelAttached(Model *model)
 
     m_widget->clearSearchFilter();
     m_hasQuick3DImport = model->hasImport("QtQuick3D");
-    QTimer::singleShot(0, this, [this]() {
+
+    // Project load is already very busy and may even trigger puppet reset, so let's wait a moment
+    // before refreshing the model
+    QTimer::singleShot(1000, this, [this]() {
         refreshModel(true);
     });
 }
@@ -257,7 +260,17 @@ void MaterialBrowserView::importsChanged(const QList<Import> &addedImports, cons
         return;
 
     m_hasQuick3DImport = hasQuick3DImport;
-    refreshModel(true);
+
+    if (m_hasQuick3DImport) {
+        // Import change will trigger puppet reset.
+        // However, it doesn't seem to trigger the notification about the reset, so wait here.
+        QTimer::singleShot(1000, this, [this]() {
+            refreshModel(true);
+        });
+    } else {
+        // No quick3d import, so we can refresh immediately to clear the browser
+        refreshModel(true);
+    }
 }
 
 void MaterialBrowserView::customNotification(const AbstractView *view, const QString &identifier,