Getting size of array in XTemplate - gxt

Question

First of all, I'm working with GXT 2.2.5 and GWT 2.3.
I have a ListView that displays the items generated by a user. I want it to display the items already entered, or a single row that says "No Items Attached" if the store is empty.
I figure I could use the "tpl if" tag in the template, but how can I detemine the size of the store for comparison?
In other words, what value do I use for "size" in the following?
<tpl if="size == 0">
<p>No Items attached</p>
</tpl>
<tpl if="size > 0">
<tpl for =".">
...
</tpl>
</tpl>
Thanks!

Answer 1

GXT 2 XTemplates are based on JavaScript, so instead of keying off of size, use length, the name of the property that holds the size of a JavaScript array. In GXT 3, XTemplates were rewritten to work with any Java object, so expect the size method like you've written here.
Modified template from http://www.sencha.com/examples-2/#listview :
private native String getTemplate() /*-{
return ['<tpl if="length == 0">',
'nothing to show',
'</tpl>',
'<tpl if="length != 0">',
'<tpl for=".">',
'<div class="thumb-wrap" id="{name}">',
'<div class="thumb"><img src="{path}" title="{name}"></div>',
'<span class="x-editable">{shortName}</span>',
'</div>',
'</tpl>',
'<div class="x-clear"></div>',
'</tpl>'
].join("");
}-*/;