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

Pick-to: 5.15
Task-number: QTBUG-84458
Change-Id: Ic3c02e6a90e6675eadbaafc6af6ab0356ee98123
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/quick/items/qquicktext.cpp b/src/quick/items/qquicktext.cpp
index 384b395f70..0546f80fd5 100644
--- a/src/quick/items/qquicktext.cpp
+++ b/src/quick/items/qquicktext.cpp
@@ -399,6 +399,8 @@ void QQuickTextPrivate::updateSize()
         layedOutTextRect = QRectF(0, 0, 0, fontHeight);
         advance = QSizeF();
         signalSizeChange(previousSize);
+        lineCount = 1;
+        emit q->lineCountChanged();
         updateType = UpdatePaintNode;
         q->update();
         return;