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<p>Thanks Joachim. This works absolutely the way I wanted.</p>
<p> </p>
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<div style="DIRECTION: ltr" id="divRpF486168"><font color="#000000" size="2" face="Tahoma"><b>From:</b> Joachim Pouderoux [joachim.pouderoux@kitware.com]<br>
<b>Sent:</b> Tuesday, December 08, 2015 8:23 PM<br>
<b>To:</b> Prashant V<br>
<b>Cc:</b> paraview-developers@paraview.org<br>
<b>Subject:</b> Re: [Paraview-developers] Disabling a menu item in Paraview GUI<br>
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<div dir="ltr">Prashant,<br>
<br>
Sure. You could listen for object builder events (see signals section of pqObjectBuilder.h):<br>
<br>
<span style="FONT-FAMILY: monospace,monospace"> QObject::connect(pqApplicationCore::instance()->getObjectBuilder(),<br>
SIGNAL(destroying(pqPipelineSource*)),<br>
this,<br>
SLOT(onSourceRemoved(pqPipelineSource*)));<br>
<br>
</span></div>
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<div dir="ltr"><b>Joachim Pouderoux</b><br>
<blockquote style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex">
<font size="1"><i>PhD, Technical Expert</i></font><br>
<b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br>
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<div class="gmail_quote">2015-12-08 15:48 GMT+01:00 Prashant V <span dir="ltr"><<a href="mailto:prashant.v@quest-global.com" target="_blank">prashant.v@quest-global.com</a>></span>:<br>
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Hi Joachim,
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</div>
<div>Thanks for sharing this snippet. This is really helpful. I have one more question further.</div>
<div>In my case, how should I access object of my menu when user clicks on 'Delete' button. I don't want to change Paraview source code where 'Delete' callback slot is implemented. </div>
<div><br>
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<div>Regards,</div>
<div>Prashant </div>
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<div style="DIRECTION: ltr"><font color="#000000" size="2" face="Tahoma"><b>From:</b> Joachim Pouderoux [<a href="mailto:joachim.pouderoux@kitware.com" target="_blank">joachim.pouderoux@kitware.com</a>]<br>
<b>Sent:</b> Tuesday, December 08, 2015 4:36 PM<br>
<b>To:</b> Prashant V<br>
<b>Cc:</b> <a href="mailto:paraview-developers@paraview.org" target="_blank">paraview-developers@paraview.org</a><br>
<b>Subject:</b> Re: [Paraview-developers] Disabling a menu item in Paraview GUI<br>
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<div>Prashant,<br>
<br>
I think you could track the number of objects available in the model, something like :<br>
<span style="FONT-FAMILY: monospace,monospace"><br>
pqServerManagerModel* model =<br>
pqApplicationCore::instance()->getServerManagerModel();<br>
pqServer* server = pqApplicationCore::instance()->getActiveServer();<br>
QList<pqPipelineSource*> sources = model->findItems<pqPipelineSource*>(server);<br>
int numberOfPipelineSources = sources.size();<br>
</span></div>
<div><span style="FONT-FAMILY: monospace,monospace"> mymenu->setEnable(numberOfPipelineSources != 0);</span><br>
<br>
</div>
<div>Best,<br>
</div>
<div>Joachim<br>
</div>
<div><br>
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<div dir="ltr"><b>Joachim Pouderoux</b><br>
<blockquote style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex">
<font size="1"><i>PhD, Technical Expert</i></font><br>
<b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br>
</blockquote>
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<div class="gmail_quote">2015-12-08 10:42 GMT+01:00 Prashant V <span dir="ltr"><<a href="mailto:prashant.v@quest-global.com" target="_blank">prashant.v@quest-global.com</a>></span>:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
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<p>Hello,</p>
<p> </p>
<p>I have added a menu item in Paraview GUI. I want to disable this menu item when user deletes all objects from pipeline browser. What I want to achieve is quite similar to enabling/disabling of Filter menu. Can anybody please guide, how this can be done?
Thanks.</p>
<p> </p>
<p>Regards,</p>
<p>Prashant </p>
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