QML Text doesn't reset lineCount when text is empty

lineCount is not reset when replacing a multi-line QML Text 'text'
property with an "" empty string. Also, the lineCountChanged signal is
not emitted

Task-number: QTBUG-84458
Change-Id: Ic3c02e6a90e6675eadbaafc6af6ab0356ee98123
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit ae1b9c6d94001411efeef600e22638906e0fa990)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/quick/items/qquicktext.cpp b/src/quick/items/qquicktext.cpp
index 90469ee82b..581ab9f76a 100644
--- a/src/quick/items/qquicktext.cpp
+++ b/src/quick/items/qquicktext.cpp
@@ -398,6 +398,8 @@ void QQuickTextPrivate::updateSize()
         layedOutTextRect = QRectF(0, 0, 0, fontHeight);
         advance = QSizeF();
         signalSizeChange(previousSize);
+        lineCount = 1;
+        emit q->lineCountChanged();
         updateType = UpdatePaintNode;
         q->update();
         return;