QmlDesigner: Add row id to the collection table

Task-number: QDS-10621
Change-Id: Ib41f7b9a8ce8d19c24b7580887f7c44a7f87fbdc
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: Qt CI Patch Build Bot <ci_patchbuild_bot@qt.io>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

src/plugins/qmldesigner/components/collectioneditor/singlecollectionmodel.cpp

@@ -36,7 +36,9 @@ namespace QmlDesigner {
 
 SingleCollectionModel::SingleCollectionModel(QObject *parent)
     : QAbstractTableModel(parent)
-{}
+{
+    connect(this, &SingleCollectionModel::modelReset, this, &SingleCollectionModel::updateEmpty);
+}
 
 QHash<int, QByteArray> SingleCollectionModel::roleNames() const
 {
@@ -117,6 +119,9 @@ QVariant SingleCollectionModel::headerData(int section,
     if (orientation == Qt::Horizontal)
         return m_currentCollection.headerAt(section);
 
+    if (orientation == Qt::Vertical)
+        return section + 1;
+
     return {};
 }
 
@@ -203,6 +208,15 @@ void SingleCollectionModel::loadCollection(const ModelNode &sourceNode, const QS
     }
 }
 
+void SingleCollectionModel::updateEmpty()
+{
+    bool isEmptyNow = rowCount() == 0;
+    if (m_isEmpty != isEmptyNow) {
+        m_isEmpty = isEmptyNow;
+        emit isEmptyChanged(m_isEmpty);
+    }
+}
+
 void SingleCollectionModel::switchToCollection(const CollectionReference &collection)
 {
     if (m_currentCollection.reference() == collection)

src/plugins/qmldesigner/components/collectioneditor/singlecollectionmodel.h

@@ -18,6 +18,7 @@ class SingleCollectionModel : public QAbstractTableModel
 
     Q_PROPERTY(QString collectionName MEMBER m_collectionName NOTIFY collectionNameChanged)
     Q_PROPERTY(int selectedColumn READ selectedColumn WRITE selectColumn NOTIFY selectedColumnChanged)
+    Q_PROPERTY(bool isEmpty MEMBER m_isEmpty NOTIFY isEmptyChanged)
 
 public:
     enum DataRoles { SelectedRole = Qt::UserRole + 1 };
@@ -51,6 +52,10 @@ public:
 signals:
     void collectionNameChanged(const QString &collectionName);
     void selectedColumnChanged(int);
+    void isEmptyChanged(bool);
+
+private slots:
+    void updateEmpty();
 
 private:
     void switchToCollection(const CollectionReference &collection);
@@ -63,6 +68,7 @@ private:
 
     QHash<CollectionReference, CollectionDetails> m_openedCollections;
     CollectionDetails m_currentCollection;
+    bool m_isEmpty = true;
     int m_selectedColumn = -1;
 
     QString m_collectionName;