[Laszlo-dev] Reacting to deactivate events in the LFC

[Raju Bitter]

With mobile Flash and AIR applications, Adobe tried to optimize
application behavior when an application looses the focus (when you
hit the home button on an Android device, closing the app window). The
app continues to run in the background, but the framerate will be
reduced to 4fps, unless the application does audio or video playback.
This is the example code for catching those events in OpenLaszlo:


<?xml version="1.0" encoding="UTF-8"?>
<canvas bgcolor="#ffffff" debug="false" height="100%" title="Mobile
OpenLaszlo AIR app" width="100%">

    <passthrough>
        import flash.events.Event;
        import flash.desktop.NativeApplication;
    </passthrough>

    <handler name="oninit">
        NativeApplication.nativeApplication.addEventListener(Event.DEACTIVATE,
__onDeactivate);
        NativeApplication.nativeApplication.addEventListener(Event.ACTIVATE,
__onActivate);
    </handler>

    <method  name="__onActivate" args="ev">
        Debug.info("onActivate");
    </method>

    <method  name="__onDeactivate" args="ev">
        Debug.info("onDeactivate");
    </method>

</canvas>

Is there code inside the LFC which will run into problems with such a
low framerate? Could objects be destroyed in such a case? How would
you handle such a situation within an OL app?