Implement clearItemData in common models

A virtual method clearItemData was added to QAIM for Qt6.
This patch implements that method to all Qt concrete models for which
it makes sense.

Task-number: QTBUG-69616
Change-Id: If980fcfc36f723128bc56ec4587c5c3a338dbbcc
Reviewed-by: David Faure <david.faure@kdab.com>

4 files changed, 27 insertions, 0 deletions

diff --git a/src/corelib/itemmodels/qabstractproxymodel.cpp b/src/corelib/itemmodels/qabstractproxymodel.cpp
index b7c49a53e4..095ab6fc71 100644
--- a/src/corelib/itemmodels/qabstractproxymodel.cpp
+++ b/src/corelib/itemmodels/qabstractproxymodel.cpp
@@ -313,6 +313,17 @@ bool QAbstractProxyModel::setHeaderData(int section, Qt::Orientation orientation
     return d->model->setHeaderData(sourceSection, orientation, value, role);
 }
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+/*!
+    \reimp
+ */
+bool QAbstractProxyModel::clearItemData(const QModelIndex &index)
+{
+    Q_D(QAbstractProxyModel);
+    return d->model->clearItemData(mapToSource(index));
+}
+#endif
+
 /*!
     \reimp
  */
diff --git a/src/corelib/itemmodels/qabstractproxymodel.h b/src/corelib/itemmodels/qabstractproxymodel.h
index c4e5d67908..6d9daee75a 100644
--- a/src/corelib/itemmodels/qabstractproxymodel.h
+++ b/src/corelib/itemmodels/qabstractproxymodel.h
@@ -78,6 +78,9 @@ public:
     bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
     bool setItemData(const QModelIndex& index, const QMap<int, QVariant> &roles) override;
     bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role = Qt::EditRole) override;
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    bool clearItemData(const QModelIndex &index) override;
+#endif
 
     QModelIndex buddy(const QModelIndex &index) const override;
     bool canFetchMore(const QModelIndex &parent) const override;
diff --git a/src/corelib/itemmodels/qstringlistmodel.cpp b/src/corelib/itemmodels/qstringlistmodel.cpp
index ea77a42e34..7a5ed1c317 100644
--- a/src/corelib/itemmodels/qstringlistmodel.cpp
+++ b/src/corelib/itemmodels/qstringlistmodel.cpp
@@ -197,6 +197,16 @@ bool QStringListModel::setData(const QModelIndex &index, const QVariant &value,
     return false;
 }
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+/*!
+    \reimp
+ */
+bool QStringListModel::clearItemData(const QModelIndex &index)
+{
+    return setData(index, QVariant(), Qt::EditRole);
+}
+#endif
+
 /*!
     Inserts \a count rows into the model, beginning at the given \a row.
 
diff --git a/src/corelib/itemmodels/qstringlistmodel.h b/src/corelib/itemmodels/qstringlistmodel.h
index f51a03e75b..1ad8ea0adf 100644
--- a/src/corelib/itemmodels/qstringlistmodel.h
+++ b/src/corelib/itemmodels/qstringlistmodel.h
@@ -59,6 +59,9 @@ public:
 
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
     bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    bool clearItemData(const QModelIndex &index) override;
+#endif
 
     Qt::ItemFlags flags(const QModelIndex &index) const override;