Add a method to clear the data to QStandardItemModel

After the behavior of setItemData has been changed following QTBUG-45114,
QStandardItemModel was lacking an interface to clear all the data from a single index.

Task-number: QTBUG-69616
Change-Id: Ide0b5bb6358439fc42c474df8b044fbace6def8d
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: David Faure <david.faure@kdab.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gui/itemmodels/qstandarditemmodel.h b/src/gui/itemmodels/qstandarditemmodel.h
index 827179b31d..a9ee25da75 100644
--- a/src/gui/itemmodels/qstandarditemmodel.h
+++ b/src/gui/itemmodels/qstandarditemmodel.h
@@ -69,6 +69,7 @@ public:
 
     virtual QVariant data(int role = Qt::UserRole + 1) const;
     virtual void setData(const QVariant &value, int role = Qt::UserRole + 1);
+    void clearData();
 
     inline QString text() const {
         return qvariant_cast<QString>(data(Qt::DisplayRole));
@@ -343,6 +344,8 @@ 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;
+    // Qt 6: add override keyword
+    bool clearItemData(const QModelIndex &index);
 
     QVariant headerData(int section, Qt::Orientation orientation,
                         int role = Qt::DisplayRole) const override;