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Date: Mon, 17 Sep 2012 11:09:42 -0400
Message-ID: <CAD1mwedsOYs41=HKN2RUM64Jt-qpgBVoLS-ztvnGUBAiSqm...@mail.gmail.com>
Subject: Re: [Cytoscape-discuss] Unregistering listeners using CyServiceRegistrar
From: Jason Montojo <jrr...@gmail.com>
To: cytoscape-discuss@googlegroups.com
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Hi Omar,

I usually get around that issue by reusing the JFrame instance.  For
example, your menu item could be a CyAction that lazily instantiates the
JFrame.  If the JFrame already exists, it just re-displays it.  That way,
your JFrame is created exactly once and the services are registered only
once.

Hope this helps,
Jason

On Sat, Sep 15, 2012 at 7:28 PM, Omar Wagih <omarwa...@gmail.com> wrote:

> I have my custom event class which implements several listeners
> The handleEvent methods of the class depends on a JTree which is created
> after files are loaded through a custom JFrame. Thus, I can't register the
> listeners in CyActivator.
> I instantiated the class, and passed references of the class + a reference
> of CyServiceRegistrar through to where my JFrame is being created.
> After my files are loaded and my JTree is created, I set the JTree in my
> custom event listener class like this: myListeners.setTree(myJTree) and
> register the listeners.
>
> However, I run into this issue:
> In the case that someone loads JFrame file loader from the app menu to
> load the the files a *second* time, the listeners are registered again
> and thus my handleEvent methods are called more than once.
>
> I tried unregistering all services when my custom file loader JFrame is
> opened like this: serviceRegistrar.unregisterAllServices(myListeners);, but
> it fails
>
> Any idea what's going on?
>
> Thanks
>
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Hi Omar,<div><br></div><div>I usually get around that issue by reusing the =
JFrame instance. =C2=A0For example, your menu item could be a CyAction that=
 lazily instantiates the JFrame. =C2=A0If the JFrame already exists, it jus=
t re-displays it. =C2=A0That way, your JFrame is created exactly once and t=
he services are registered only once.</div>
<div><br></div><div>Hope this helps,</div><div>Jason<br><br><div class=3D"g=
mail_quote">On Sat, Sep 15, 2012 at 7:28 PM, Omar Wagih <span dir=3D"ltr">&=
lt;<a href=3D"mailto:omarwa...@gmail.com" target=3D"_blank">omarwagih@gmail=
.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">I have my custom event class which implement=
s several listeners<div>The handleEvent methods of the class depends on a J=
Tree which is created after files are loaded through a custom JFrame. Thus,=
 I can&#39;t register the listeners in CyActivator.</div>
<div>I instantiated the class, and passed references of the class + a refer=
ence of CyServiceRegistrar through to where my JFrame is being created.=C2=
=A0</div><div>After my files are loaded and my JTree is created, I set the =
JTree in my custom event listener class like this:=C2=A0myListeners.setTree=
(myJTree) and register the listeners.</div>
<div><br></div><div>However, I run into this issue:=C2=A0</div><div>In the =
case that someone loads JFrame file loader from the app menu to load the th=
e files a <b>second</b> time, the listeners are registered again and thus m=
y handleEvent methods are called more than once.</div>
<div><br></div><div>I tried unregistering all services when my custom file =
loader JFrame is opened like this:=C2=A0serviceRegistrar.unregisterAllServi=
ces(myListeners);, but it fails</div><div><br></div><div>Any idea what&#39;=
s going on?</div>
<div><br></div><div>Thanks</div><span class=3D"HOEnZb"><font color=3D"#8888=
88"><div><br></div>

<p></p>

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