Doc: Fix warnings in StocQt Qt Quick demo

Fix a number of warnings from QML engine by adding
some boundary & sanity checks for properties. Also
address UI update issues by having XMLHTTPRequest
calls to trigger by a timer, instead of directly
binding them to multiple change notifier signals.

Task-number: QTBUG-33867
Change-Id: I48f573050b5dc3e3fe6e75bc423fe86ecc4a2469
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>
Reviewed-by: Alan Alpert <aalpert@blackberry.com>

1 files changed, 10 insertions, 4 deletions

diff --git a/examples/quick/demos/stocqt/stocqt.qml b/examples/quick/demos/stocqt/stocqt.qml
index 9bcffd972f..3e231ab8bf 100644
--- a/examples/quick/demos/stocqt/stocqt.qml
+++ b/examples/quick/demos/stocqt/stocqt.qml
@@ -52,17 +52,23 @@ ListView {
     boundsBehavior: Flickable.StopAtBounds
     currentIndex: 1
 
+    Timer {
+        id: updateTimer
+        interval: 500
+        onTriggered: stock.updateStock()
+    }
+
     StockModel {
         id: stock
         stockId: listView.currentStockId
         stockName: listView.currentStockName
         startDate: settings.startDate
         endDate: settings.endDate
-        onStockIdChanged: updateStock()
-        onStartDateChanged: updateStock()
-        onEndDateChanged: updateStock()
+        onStockIdChanged: updateTimer.restart()
+        onStartDateChanged: updateTimer.restart()
+        onEndDateChanged: updateTimer.restart()
         onDataReady: {
-            root.currentIndex = 1
+            root.positionViewAtIndex(1, ListView.SnapPosition)
             stockView.update()
         }
     }