Add QQuickItemPrivate::updateOrAddItemChangeListener()

This is identical to the existing updateOrAddGeometryChangeListener(),
except that it updates the regular "types" member, not "gTypes".

This function will allow preventing duplicate change listeners, at the
expensive of a call to QVector::indexOf(). It's useful when there is
no other way for calling code to check if a listener will be a
duplicate before adding it.

Task-number: QTBUG-69056
Task-number: QTBUG-70729
Change-Id: Idba039f355023e8d45a8b46e4af95aa81c13c3f4
Reviewed-by: Michael Brasser <michael.brasser@live.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/quick/items/qquickitem_p.h b/src/quick/items/qquickitem_p.h
index 93287cf0aa..0204ac07c5 100644
--- a/src/quick/items/qquickitem_p.h
+++ b/src/quick/items/qquickitem_p.h
@@ -400,6 +400,7 @@ public:
     QVector<QQuickItemPrivate::ChangeListener> changeListeners;
 
     void addItemChangeListener(QQuickItemChangeListener *listener, ChangeTypes types);
+    void updateOrAddItemChangeListener(QQuickItemChangeListener *listener, ChangeTypes types);
     void removeItemChangeListener(QQuickItemChangeListener *, ChangeTypes types);
     void updateOrAddGeometryChangeListener(QQuickItemChangeListener *listener, QQuickGeometryChange types);
     void updateOrRemoveGeometryChangeListener(QQuickItemChangeListener *listener, QQuickGeometryChange types);