QmlDesigner: Enable expanding content library user categories

Change-Id: Id3b49773b02e4922a06b71e6ed7a7098ed4d4062
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: Qt CI Patch Build Bot <ci_patchbuild_bot@qt.io>

share/qtcreator/qmldesigner/contentLibraryQmlSource/ContentLibraryUserView.qml

@@ -73,16 +73,10 @@ HelperWidgets.ScrollView {
 
                 caption: categoryName
                 visible: categoryVisible
-                expanded: categoryExpanded
-                expandOnClick: false
                 category: "ContentLib_User"
 
-                onToggleExpand: categoryExpanded = !categoryExpanded
-                onExpand: categoryExpanded = true
-                onCollapse: categoryExpanded = false
-
                 function expandSection() {
-                    categoryExpanded = true
+                    section.expanded = true
                 }
 
                 property alias count: repeater.count
@@ -123,7 +117,7 @@ HelperWidgets.ScrollView {
                                 roleValue: "texture"
                                 delegate: ContentLibraryTexture {
                                     width: root.cellWidth
-                                    height: root.cellHeight
+                                    height: root.cellWidth // for textures use a square size since there is no name row
 
                                     // onShowContextMenu: ctxMenu.popupMenu(modelData) // TODO
                                 }

src/plugins/qmldesigner/components/contentlibrary/contentlibraryusermodel.cpp

@@ -64,9 +64,6 @@ QVariant ContentLibraryUserModel::data(const QModelIndex &index, int role) const
     if (role == VisibleRole)
         return true; // TODO
 
-    if (role == ExpandedRole)
-        return true; // TODO
-
     return {};
 }
 
@@ -148,7 +145,6 @@ QHash<int, QByteArray> ContentLibraryUserModel::roleNames() const
     static const QHash<int, QByteArray> roles {
         {NameRole, "categoryName"},
         {VisibleRole, "categoryVisible"},
-        {ExpandedRole, "categoryExpanded"},
         {ItemsRole, "categoryItems"}
     };
     return roles;
@@ -289,7 +285,7 @@ void ContentLibraryUserModel::loadTextureBundle()
     }
 
     int texSectionIdx = 1;
-    emit dataChanged(index(texSectionIdx, 0), index(texSectionIdx, 0));
+    emit dataChanged(index(texSectionIdx), index(texSectionIdx));
 }
 
 bool ContentLibraryUserModel::hasRequiredQuick3DImport() const

src/plugins/qmldesigner/components/contentlibrary/contentlibraryusermodel.h

@@ -125,7 +125,7 @@ private:
     QString m_importerBundleId;
     QStringList m_importerSharedFiles;
 
-    enum Roles { NameRole = Qt::UserRole + 1, VisibleRole, ExpandedRole, ItemsRole };
+    enum Roles { NameRole = Qt::UserRole + 1, VisibleRole, ItemsRole };
 };
 
 } // namespace QmlDesigner