QmlDesigner: Improve puppet reset handling in material browser

Ensure just one reset call for cases where multiple materials are added
at once, and detect reset completion from root instance completion
notification instead of reset trigger notification, as it comes later
and catches all puppet reset cases.

Fixes: QDS-7119
Change-Id: I99baa718bd1c85b4581f07ce75193213110e8e96
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

2 files changed, 24 insertions, 18 deletions

diff --git a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
index c0e0f9ad3c..2a06d5acbc 100644
--- a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
+++ b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
@@ -211,8 +211,11 @@ void MaterialBrowserView::nodeReparented(const ModelNode &node,
     bool matRemoved = oldParentNode.isValid() && oldParentNode.id() == Constants::MATERIAL_LIB_ID;
 
     if (matAdded || matRemoved) {
-        if (matAdded) // Workaround to fix various material issues all likely caused by QTBUG-103316
+        if (matAdded && !m_puppetResetPending) {
+            // Workaround to fix various material issues all likely caused by QTBUG-103316
             resetPuppet();
+            m_puppetResetPending = true;
+        }
         refreshModel(!matAdded);
         int idx = m_widget->materialBrowserModel()->materialIndex(node);
         m_widget->materialBrowserModel()->selectMaterial(idx);
@@ -261,16 +264,8 @@ void MaterialBrowserView::importsChanged(const QList<Import> &addedImports, cons
 
     m_hasQuick3DImport = hasQuick3DImport;
 
-    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);
-    }
+    // Import change will trigger puppet reset, so we don't want to update previews immediately
+    refreshModel(false);
 }
 
 void MaterialBrowserView::customNotification(const AbstractView *view, const QString &identifier,
@@ -285,13 +280,22 @@ void MaterialBrowserView::customNotification(const AbstractView *view, const QSt
         int idx = m_widget->materialBrowserModel()->materialIndex(nodeList.first());
         if (idx != -1)
             m_widget->materialBrowserModel()->selectMaterial(idx);
-    } else if (identifier == "reset QmlPuppet") {
-        // Little delay is needed to allow puppet reset to actually be done, as it is async as well
-        QTimer::singleShot(200, this, [this]() {
-            const QList<ModelNode> materials = m_widget->materialBrowserModel()->materials();
-            for (const ModelNode &node : materials)
-                model()->nodeInstanceView()->previewImageDataForGenericNode(node, {});
-        });
+    }
+}
+
+void MaterialBrowserView::instancesCompleted(const QVector<ModelNode> &completedNodeList)
+{
+    for (const ModelNode &node : completedNodeList) {
+        // We use root node completion as indication of puppet reset
+        if (node.isRootNode()) {
+            m_puppetResetPending  = false;
+            QTimer::singleShot(1000, this, [this]() {
+                const QList<ModelNode> materials = m_widget->materialBrowserModel()->materials();
+                for (const ModelNode &node : materials)
+                    model()->nodeInstanceView()->previewImageDataForGenericNode(node, {});
+            });
+            break;
+        }
     }
 }
 
diff --git a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.h b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.h
index c637efa49e..503986a28e 100644
--- a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.h
+++ b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.h
@@ -60,6 +60,7 @@ public:
     void importsChanged(const QList<Import> &addedImports, const QList<Import> &removedImports) override;
     void customNotification(const AbstractView *view, const QString &identifier,
                             const QList<ModelNode> &nodeList, const QList<QVariant> &data) override;
+    void instancesCompleted(const QVector<ModelNode> &completedNodeList) override;
 
 private:
     void refreshModel(bool updateImages);
@@ -68,6 +69,7 @@ private:
     QPointer<MaterialBrowserWidget> m_widget;
     bool m_hasQuick3DImport = false;
     bool m_autoSelectModelMaterial = false; // TODO: wire this to some action
+    bool m_puppetResetPending = false;
 };
 
 } // namespace QmlDesigner