QmlDesigner: Maintain bundle categories expand state

Prevent categories auto-expanding when adding an bundle material
instance. Also some relevant tweaks.

Fixes: QDS-8043
Change-Id: Id87886c6d6e065f2c9c1253279348e076bc4d97f
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

share/qtcreator/qmldesigner/materialBrowserQmlSource/MaterialBrowser.qml

@@ -263,10 +263,13 @@ Item {
 
                             delegate: Section {
                                 width: root.width
-                                caption: bundleCategory
+                                caption: bundleCategoryName
                                 addTopPadding: false
                                 sectionBackgroundColor: "transparent"
                                 visible: bundleCategoryVisible
+                                expanded: bundleCategoryExpanded
+                                expandOnClick: false
+                                onToggleExpand: bundleCategoryExpanded = !bundleCategoryExpanded
 
                                 Grid {
                                     width: scrollView.width
@@ -276,7 +279,7 @@ Item {
                                     columns: root.width / root.cellWidth
 
                                     Repeater {
-                                        model: bundleMaterialsModel
+                                        model: bundleCategoryMaterials
 
                                         delegate: BundleMaterialItem {
                                             width: root.cellWidth

src/plugins/qmldesigner/components/materialbrowser/bundlematerialcategory.cpp

@@ -72,6 +72,11 @@ bool BundleMaterialCategory::visible() const
     return m_visible;
 }
 
+bool BundleMaterialCategory::expanded() const
+{
+    return m_expanded;
+}
+
 QList<BundleMaterial *> BundleMaterialCategory::categoryMaterials() const
 {
     return m_categoryMaterials;

src/plugins/qmldesigner/components/materialbrowser/bundlematerialcategory.h

@@ -35,8 +35,11 @@ class BundleMaterialCategory : public QObject
 {
     Q_OBJECT
 
-    Q_PROPERTY(QString categoryName MEMBER m_name CONSTANT)
-    Q_PROPERTY(bool categoryVisible MEMBER m_visible NOTIFY categoryVisibleChanged)
+    Q_PROPERTY(QString bundleCategoryName MEMBER m_name CONSTANT)
+    Q_PROPERTY(bool bundleCategoryVisible MEMBER m_visible NOTIFY categoryVisibleChanged)
+    Q_PROPERTY(bool bundleCategoryExpanded MEMBER m_expanded NOTIFY categoryExpandChanged)
+    Q_PROPERTY(QList<BundleMaterial *> bundleCategoryMaterials MEMBER m_categoryMaterials
+               NOTIFY bundleMaterialsModelChanged)
 
 public:
     BundleMaterialCategory(QObject *parent, const QString &name);
@@ -47,14 +50,18 @@ public:
 
     QString name() const;
     bool visible() const;
+    bool expanded() const;
     QList<BundleMaterial *> categoryMaterials() const;
 
 signals:
     void categoryVisibleChanged();
+    void categoryExpandChanged();
+    void bundleMaterialsModelChanged();
 
 private:
     QString m_name;
     bool m_visible = true;
+    bool m_expanded = true;
 
     QList<BundleMaterial *> m_categoryMaterials;
 };

src/plugins/qmldesigner/components/materialbrowser/materialbrowserbundlemodel.cpp

@@ -54,17 +54,26 @@ QVariant MaterialBrowserBundleModel::data(const QModelIndex &index, int role) co
     QTC_ASSERT(index.isValid() && index.row() < m_bundleCategories.count(), return {});
     QTC_ASSERT(roleNames().contains(role), return {});
 
+    return m_bundleCategories.at(index.row())->property(roleNames().value(role));
+}
+
+bool MaterialBrowserBundleModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+    if (!index.isValid() || !roleNames().contains(role))
+        return false;
+
     QByteArray roleName = roleNames().value(role);
-    if (roleName == "bundleCategory")
-        return m_bundleCategories.at(index.row())->name();
+    BundleMaterialCategory *bundleCategory = m_bundleCategories.at(index.row());
+    QVariant currValue = bundleCategory->property(roleName);
 
-    if (roleName == "bundleCategoryVisible")
-        return m_bundleCategories.at(index.row())->visible();
+    if (currValue != value) {
+        bundleCategory->setProperty(roleName, value);
 
-    if (roleName == "bundleMaterialsModel")
-        return QVariant::fromValue(m_bundleCategories.at(index.row())->categoryMaterials());
+        emit dataChanged(index, index, {role});
+        return true;
+    }
 
-    return {};
+    return false;
 }
 
 bool MaterialBrowserBundleModel::isValidIndex(int idx) const
@@ -75,9 +84,10 @@ bool MaterialBrowserBundleModel::isValidIndex(int idx) const
 QHash<int, QByteArray> MaterialBrowserBundleModel::roleNames() const
 {
     static const QHash<int, QByteArray> roles {
-        {Qt::UserRole + 1, "bundleCategory"},
+        {Qt::UserRole + 1, "bundleCategoryName"},
         {Qt::UserRole + 2, "bundleCategoryVisible"},
-        {Qt::UserRole + 3, "bundleMaterialsModel"}
+        {Qt::UserRole + 3, "bundleCategoryExpanded"},
+        {Qt::UserRole + 4, "bundleCategoryMaterials"}
     };
     return roles;
 }

src/plugins/qmldesigner/components/materialbrowser/materialbrowserbundlemodel.h

@@ -57,6 +57,7 @@ public:
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+    bool setData(const QModelIndex &index, const QVariant &value, int role) override;
     QHash<int, QByteArray> roleNames() const override;
 
     void setSearchText(const QString &searchText);