Avoid discouraged patterns in examples

In particular, use required properties where applicable, explicitly
import QtQml where we use it, avoid unqualified access into the root
scope of a component, use JavaScript functions with explicit parameters
as signal handlers.

Change-Id: I3eaaba47cc3c7a2a12d488e36f9eec145cedbb0e
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

1 files changed, 5 insertions, 3 deletions

diff --git a/examples/quick/particles/emitters/content/burstandpulse.qml b/examples/quick/particles/emitters/content/burstandpulse.qml
index 8bd19ed8ed..d3c38c2360 100644
--- a/examples/quick/particles/emitters/content/burstandpulse.qml
+++ b/examples/quick/particles/emitters/content/burstandpulse.qml
@@ -52,6 +52,8 @@ import QtQuick 2.0
 import QtQuick.Particles 2.0
 
 Rectangle {
+    id: root
+
     width: 320
     height: 480
     color: "black"
@@ -63,12 +65,12 @@ Rectangle {
         repeat: true
         onTriggered: {
         //! [0]
-            if (lastWasPulse) {
+            if (root.lastWasPulse) {
                 burstEmitter.burst(500);
-                lastWasPulse = false;
+                root.lastWasPulse = false;
             } else {
                 pulseEmitter.pulse(500);
-                lastWasPulse = true;
+                root.lastWasPulse = true;
             }
         //! [0]
         }