Plugin notification of stopped media

[mvallevand]

Is any message sent back to a plugin when media is stopped outside of the plugin or while the plugin is in screen saver mode? If not is there a way to add an event handler to PluginHelperFactory where I could do some clean up code?

Martin

[sub]

If you plugin implements the GBPVR.Public.IEventNotification interface, then it'll automatically be sent events whenever they happen. (ie, the Notify() method will get called whenever music/videos/dvds start or stop)

[mvallevand]

Yes thanks that got me in the right direction and found this thread I should have found http://forums.nextpvr.com/showthread.php?t=17255

Martin

[mvallevand]

I'm still having problems understanding this, does the Notify() event inherit a different instance?

I have

namespace WebRadio
{
public class WebRadio : BaseButtonListUiTask, SkinHelper2.GetImageCallback, IUiTask, IEventNotification
{
protected bool flag = false;
...

This flag is different in the Notify() event then in the plugin derived class

Martin

[sub]

Yes, it'll be a different instance of the class than your main plugin (for historic reasons, and unable to be changed now without breaking things). It was originally intended that people would not put this interface on their actual plugin class.

You could do something like this. Create a sparate class for receiving notifications, which effectively just forwards events to your main plugin.

Code:

namespace WebRadio
{
public class EventNotification:  IEventNotification
...
void Notify(EventTypes eventType, string eventText)
{
    WebRadio.GetInstance().Notify(eventType, eventText);
}
...

Then setup the singleton on your main WebRadio class

Code:

namespace WebRadio
{
public class WebRadio : BaseButtonListUiTask, SkinHelper2.GetImageCallback, IUiTask, IEventNotification
{
private static WebRadio singleton;

// in the constructor, set the single to the instance
public WebRadio()
{
    ...
    singleton = this;
    ...
}

// provide a method to get the singleton
public WebRadio GetInstance()
{
    return singleton;
}

// method to handle events in your plugin
void Notify(EventTypes eventType, string eventText)
{
    ....
}

[mvallevand]

Thanks sub, that looks easy enough, singletons might not pass muster at work but I trust GBPVR.

Martin

[sub]

While there are other ways of achieving the same results, using a singleton was a nice compact way of describing a solution, and entirely appropriate in this type of situation.

If it was a web app or some highly parallel code, with the potential for contention on shared resources, I might not advise the same thing, but thats not the case here...

[mvallevand]

Thanks sub, it works, like a treat except it wanted

public <b>static</b> WebRadio GetInstance()

BTW, I hope you understand that my comment was not supposed to be negative I know you wouldn't lead me astray. In any case there is a reason that enterprise programmers can be happy with 50 lines of code a day, which I will never understand.

Martin