QmlDesigner: Add Loader and Repeater to component library

Also fixes some issues with Repeater usage.

Fixes: QDS-5149
Change-Id: I259dcb73be634150dd0c5e602165b63112ec958c
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Samuel Ghinet <samuel.ghinet@qt.io>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

src/plugins/qmldesigner/components/formeditor/formeditorview.cpp

@@ -91,6 +91,9 @@ void FormEditorView::modelAttached(Model *model)
 //This function does the setup of the initial FormEditorItem tree in the scene
 void FormEditorView::setupFormEditorItemTree(const QmlItemNode &qmlItemNode)
 {
+    if (!qmlItemNode.hasFormEditorItem())
+        return;
+
     if (qmlItemNode.isFlowTransition()) {
         m_scene->addFormEditorItem(qmlItemNode, FormEditorScene::FlowTransition);
         if (qmlItemNode.hasNodeParent())

src/plugins/qmldesigner/designercore/include/nodehints.h

@@ -62,6 +62,7 @@ public:
     bool canBeDroppedInView3D() const;
     bool isMovable() const;
     bool isResizable() const;
+    bool hasFormEditorItem() const;
     bool isStackedContainer() const;
     bool canBeReparentedTo(const ModelNode &potenialParent);
     QString indexPropertyForStackedContainer() const;

src/plugins/qmldesigner/designercore/include/qmlitemnode.h

@@ -105,6 +105,7 @@ public:
     bool modelIsResizable() const;
     bool modelIsRotatable() const;
     bool modelIsInLayout() const;
+    bool hasFormEditorItem() const;
 
     QRectF instanceBoundingRect() const;
     QRectF instanceSceneBoundingRect() const;

src/plugins/qmldesigner/designercore/metainfo/nodehints.cpp

@@ -183,6 +183,11 @@ bool NodeHints::isResizable() const
     return evaluateBooleanExpression("isResizable", true);
 }
 
+bool NodeHints::hasFormEditorItem() const
+{
+    return evaluateBooleanExpression("hasFormEditorItem", true);
+}
+
 bool NodeHints::isStackedContainer() const
 {
     if (!isValid())

src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp

@@ -395,6 +395,11 @@ bool QmlItemNode::modelIsInLayout() const
     return false;
 }
 
+bool QmlItemNode::hasFormEditorItem() const
+{
+    return NodeHints::fromModelNode(modelNode()).hasFormEditorItem();
+}
+
 QRectF  QmlItemNode::instanceBoundingRect() const
 {
     return QRectF(QPointF(0, 0), nodeInstance().size());

src/plugins/qmldesigner/qtquickplugin/quick.metainfo

@@ -448,4 +448,35 @@ MetaInfo {
             version: "2.0"
         }
     }
+
+    Type {
+        name: "QtQuick.Loader"
+        icon: ":/qtquickplugin/images/item-icon16.png"
+
+        ItemLibraryEntry {
+            name: "Loader"
+            category: "e.Qt Quick - Component"
+            libraryIcon: ":/qtquickplugin/images/item-icon.png"
+            version: "2.0"
+            Property { name: "width"; type: "int"; value: 200; }
+            Property { name: "height"; type: "int"; value: 200; }
+        }
+    }
+
+    Type {
+        name: "QtQuick.Repeater"
+        icon: ":/qtquickplugin/images/item-icon16.png"
+
+        Hints {
+            canBeDroppedInFormEditor: false
+            hasFormEditorItem: false
+        }
+
+        ItemLibraryEntry {
+            name: "Repeater"
+            category: "e.Qt Quick - Component"
+            libraryIcon: ":/qtquickplugin/images/item-icon.png"
+            version: "2.0"
+        }
+    }
 }