StackView: provide better warnings and errors

Check for valid URLs and test object types. Throw warnings when
appropriate instead of crashing later.

Task-number: QTBUG-59634
Change-Id: Ia269dc8afd31b618f1ff7aec94d684029cb78244
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/quicktemplates2/qquickstackview_p_p.h b/src/quicktemplates2/qquickstackview_p_p.h
index 532a2b57bd..26d741f81f 100644
--- a/src/quicktemplates2/qquickstackview_p_p.h
+++ b/src/quicktemplates2/qquickstackview_p_p.h
@@ -76,10 +76,10 @@ public:
 
     void setCurrentItem(QQuickStackElement *element);
 
-    QList<QQuickStackElement *> parseElements(QQmlV4Function *args, int from = 0);
+    QList<QQuickStackElement *> parseElements(int from, QQmlV4Function *args, QStringList *errors);
     QQuickStackElement *findElement(QQuickItem *item) const;
     QQuickStackElement *findElement(const QV4::Value &value) const;
-    QQuickStackElement *createElement(const QV4::Value &value);
+    QQuickStackElement *createElement(const QV4::Value &value, QString *error);
     bool pushElements(const QList<QQuickStackElement *> &elements);
     bool pushElement(QQuickStackElement *element);
     bool popElements(QQuickStackElement *element);