ZK Developer's Guide

Online Media Library
Remove the media.
The interesting point is the extended toolbarbutton component. The data is
transferred with the sessionScope instance.
The page update-media.zul is similar to add-media.zul except that the creation of
a media instance is replaced with retrieving of the media from sessionScope.
For completeness the full implementation of update-media.zul is shown next.
import com.packtpub.zk.media.model.MediaType;
import com.packtpub.zk.media.dao.*;
if (event.getValue().length() == 0)
{
titlecount.setValue("");
}
else
{
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