Fix default property preventing signals from being emitted.

Change the way connectAlias works so that even if the target
for the connection is not available immediately, anything that
is bound to it is notified when the target is changed.

(Fix is authored by Aaron).

Task-number: QTBUG-21580
Change-Id: Ida23c0e620069c50b123c71b5078929d4c7ec4e4
Reviewed-by: Martin Jones <martin.jones@nokia.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeecmascript/data/qtbug_21580.qml b/tests/auto/declarative/qdeclarativeecmascript/data/qtbug_21580.qml
new file mode 100644
index 0000000000..dc0066ba3f
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeecmascript/data/qtbug_21580.qml
@@ -0,0 +1,22 @@
+import QtQuick 2.0
+
+QtObject {
+    property bool test: false
+
+    property list<QtObject> objects: [
+        QtObject {
+            id: first
+            property alias myAlias: other.myProperty
+            onMyAliasChanged: if (myAlias == 20) test = true
+        },
+        QtObject {
+            id: other
+            property real myProperty
+        }
+    ]
+
+    Component.onCompleted: {
+        other.myProperty = 20;
+    }
+}
+