QmlDesigner: Handle material type without using item library entries

Recent project structure changes invalidated material bundle metainfo
files, as we can't support both new and old structure with them.
They were only used for populating possible types in material editor,
so adjusted this functionality to only allow changing the type between
basic types. If the material is a custom component, then the only the
current type is displayed and the type combo box is disabled.

Fixes: QDS-12628
Change-Id: I07b1a482977f0ecc94c35f3d485302c85c6153f9
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

share/qtcreator/qmldesigner/materialEditorQmlSources/MaterialEditorTopSection.qml

@@ -214,6 +214,7 @@ Column {
                     model: possibleTypes
                     showExtendedFunctionButton: false
                     implicitWidth: StudioTheme.Values.singleControlColumnWidth
+                    enabled: possibleTypes.length > 1
 
                     onActivated: changeTypeName(currentValue)
                 }

src/plugins/qmldesigner/components/materialeditor/materialeditorview.cpp

@@ -24,7 +24,6 @@
 #include "qmldesignerplugin.h"
 #include "qmltimeline.h"
 #include "variantproperty.h"
-#include <itemlibraryentry.h>
 #include <utils3d.h>
 
 #include <coreplugin/icore.h>
@@ -63,10 +62,6 @@ MaterialEditorView::MaterialEditorView(ExternalDependenciesInterface &externalDe
         }
     });
 
-    m_typeUpdateTimer.setSingleShot(true);
-    m_typeUpdateTimer.setInterval(500);
-    connect(&m_typeUpdateTimer, &QTimer::timeout, this, &MaterialEditorView::updatePossibleTypes);
-
     QmlDesignerPlugin::trackWidgetFocusTime(m_stackedWidget, Constants::EVENT_MATERIALEDITOR_TIME);
 
     MaterialEditorDynamicPropertiesProxyModel::registerDeclarativeType();
@@ -333,8 +328,10 @@ void MaterialEditorView::resetView()
 
     setupQmlBackend();
 
-    if (m_qmlBackEnd)
+    if (m_qmlBackEnd) {
         m_qmlBackEnd->emitSelectionChanged();
+        updatePossibleTypes();
+    }
 
     QTimer::singleShot(0, this, &MaterialEditorView::requestPreviewRender);
 
@@ -605,7 +602,6 @@ void MaterialEditorView::setupQmlBackend()
     else
         m_dynamicPropertiesModel->reset();
 
-    delayedTypeUpdate();
     initPreviewData();
 
     m_stackedWidget->setCurrentWidget(m_qmlBackEnd->widget());
@@ -690,21 +686,6 @@ void MaterialEditorView::initPreviewData()
     }
 }
 
-void MaterialEditorView::delayedTypeUpdate()
-{
-     m_typeUpdateTimer.start();
-}
-
-[[maybe_unused]] static Import entryToImport(const ItemLibraryEntry &entry)
-{
-    if (entry.majorVersion() == -1 && entry.minorVersion() == -1)
-        return Import::createFileImport(entry.requiredImport());
-
-    return Import::createLibraryImport(entry.requiredImport(),
-                                       QString::number(entry.majorVersion()) + QLatin1Char('.') +
-                                       QString::number(entry.minorVersion()));
-}
-
 void MaterialEditorView::updatePossibleTypes()
 {
     QTC_ASSERT(model(), return);
@@ -712,49 +693,21 @@ void MaterialEditorView::updatePossibleTypes()
     if (!m_qmlBackEnd)
         return;
 
-#ifdef QDS_USE_PROJECTSTORAGE
-    auto heirs = model()->qtQuick3DMaterialMetaInfo().heirs();
-    heirs.push_back(model()->qtQuick3DMaterialMetaInfo());
-    auto entries = Utils::transform<ItemLibraryEntries>(heirs, [&](const auto &heir) {
-        return toItemLibraryEntries(heir.itemLibrariesEntries(), *model()->projectStorage());
-    });
+    static const QStringList basicTypes {
+        "CustomMaterial",
+        "DefaultMaterial",
+        "PrincipledMaterial",
+        "SpecularGlossyMaterial"
+    };
 
-    // I am unsure about the code intention here
-#else // Ensure basic types are always first
-    QStringList nonQuick3dTypes;
-    QStringList allTypes;
+    const QString matType = m_selectedMaterial.simplifiedTypeName();
 
-    const QList<ItemLibraryEntry> itemLibEntries = m_itemLibraryInfo->entries();
-    for (const ItemLibraryEntry &entry : itemLibEntries) {
-        NodeMetaInfo metaInfo = model()->metaInfo(entry.typeName());
-        bool valid = metaInfo.isValid()
-                     && (metaInfo.majorVersion() >= entry.majorVersion()
-                         || metaInfo.majorVersion() < 0);
-        if (valid && metaInfo.isQtQuick3DMaterial()) {
-            bool addImport = entry.requiredImport().isEmpty();
-            if (!addImport) {
-                Import import = entryToImport(entry);
-                addImport = model()->hasImport(import, true, true);
-            }
-            if (addImport) {
-                const QList<QByteArray> typeSplit = entry.typeName().split('.');
-                const QString typeName = QString::fromLatin1(typeSplit.last());
-                if (typeSplit.size() == 2 && typeSplit.first() == "QtQuick3D") {
-                    if (!allTypes.contains(typeName))
-                        allTypes.append(typeName);
-                } else if (!nonQuick3dTypes.contains(typeName)) {
-                    nonQuick3dTypes.append(typeName);
-                }
-            }
-        }
+    if (basicTypes.contains(matType)) {
+        m_qmlBackEnd->contextObject()->setPossibleTypes(basicTypes);
+        return;
     }
 
-    allTypes.sort();
-    nonQuick3dTypes.sort();
-    allTypes.append(nonQuick3dTypes);
-
-    m_qmlBackEnd->contextObject()->setPossibleTypes(allTypes);
-#endif
+    m_qmlBackEnd->contextObject()->setPossibleTypes({matType});
 }
 
 void MaterialEditorView::modelAttached(Model *model)
@@ -774,20 +727,6 @@ void MaterialEditorView::modelAttached(Model *model)
         m_ensureMatLibTimer.start(500);
     }
 
-#ifndef QDS_USE_PROJECTSTORAGE
-    if (m_itemLibraryInfo.data() != model->metaInfo().itemLibraryInfo()) {
-        if (m_itemLibraryInfo) {
-            disconnect(m_itemLibraryInfo.data(), &ItemLibraryInfo::entriesChanged,
-                       this, &MaterialEditorView::delayedTypeUpdate);
-        }
-        m_itemLibraryInfo = model->metaInfo().itemLibraryInfo();
-        if (m_itemLibraryInfo) {
-            connect(m_itemLibraryInfo.data(), &ItemLibraryInfo::entriesChanged,
-                    this, &MaterialEditorView::delayedTypeUpdate);
-        }
-    }
-#endif
-
     if (!m_setupCompleted) {
         reloadQml();
         m_setupCompleted = true;

src/plugins/qmldesigner/components/materialeditor/materialeditorview.h

@@ -109,12 +109,10 @@ private:
     bool noValidSelection() const;
 
     void initPreviewData();
-    void delayedTypeUpdate();
     void updatePossibleTypes();
 
     ModelNode m_selectedMaterial;
     QTimer m_ensureMatLibTimer;
-    QTimer m_typeUpdateTimer;
     QShortcut *m_updateShortcut = nullptr;
     int m_timerId = 0;
     QStackedWidget *m_stackedWidget = nullptr;