Make chat example more error tolerant

It becomes more obvious on platforms which do not support Bluetooth
that the example will not work.

Change-Id: Ia6d249a4a891f93abf29910500ba164662308889
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>

3 files changed, 16 insertions, 1 deletions

diff --git a/examples/bluetooth/chat/Search.qml b/examples/bluetooth/chat/Search.qml
index 4557971b..47fbb6ab 100644
--- a/examples/bluetooth/chat/Search.qml
+++ b/examples/bluetooth/chat/Search.qml
@@ -41,7 +41,7 @@
 import QtQuick 2.2
 
 Rectangle {
-    property bool animationRunning: ranimation.running
+    property bool animationRunning: true
 
     function appendText(newText) {
         searchText.text += newText
@@ -75,6 +75,7 @@ Rectangle {
             duration: 2000
             loops: Animation.Infinite
             alwaysRunToEnd: true
+            running: animationRunning
         }
     }
 
diff --git a/examples/bluetooth/chat/chat.qml b/examples/bluetooth/chat/chat.qml
index 6614d53c..6a2830ad 100644
--- a/examples/bluetooth/chat/chat.qml
+++ b/examples/bluetooth/chat/chat.qml
@@ -57,10 +57,18 @@ Item {
     //! [BtDiscoveryModel-1]
         onRunningChanged : {
             if (!btModel.running && top.state == "begin" && !serviceFound) {
+                searchBox.animationRunning = false;
                 searchBox.appendText("\nNo service found. \n\nPlease start server\nand restart app.")
             }
         }
 
+        onErrorChanged: {
+            if (error != BluetoothDiscoveryModel.NoError && !btModel.running) {
+                searchBox.animationRunning = false
+                searchBox.appendText("\n\nDiscovery failed.\nPlease ensure Bluetooth is available.")
+            }
+        }
+
     //! [BtDiscoveryModel-2]
         onServiceDiscovered: {
             if (serviceFound)
diff --git a/examples/bluetooth/chat/qmlchat.cpp b/examples/bluetooth/chat/qmlchat.cpp
index aefc900a..6e23fe13 100644
--- a/examples/bluetooth/chat/qmlchat.cpp
+++ b/examples/bluetooth/chat/qmlchat.cpp
@@ -43,11 +43,17 @@
 #include <QtQml/QQmlEngine>
 #include <QtQml/QQmlContext>
 #include <QDebug>
+#include <QBluetoothLocalDevice>
 
 int main(int argc, char *argv[])
 {
     QGuiApplication application(argc, argv);
 
+    QList<QBluetoothHostInfo> infos = QBluetoothLocalDevice::allDevices();
+    if (infos.isEmpty())
+        qWarning() << "Missing Bluetooth local device. "
+                      "Example will not work properly.";
+
     const QString mainQmlApp = QLatin1String("qrc:/chat.qml");
     QQuickView view;
     view.setSource(QUrl(mainQmlApp));