GXT Paging Toolbar Disabled

The paging toolbar keep disabled when it loads data and a new request is made before the last request accomplished. My temporary solution is to use flag to avoid request the same data several time concurrently. But what about, the data is different ????

Finally I found the solution after read the post in GXT forum. You can find it here.
http://www.sencha.com/forum/showthread.php?85011-Loading-Store-twice-causes-PagingToolBar-to-disable

But in my solution, I just use override the loader LoadListener events. The concept is to disable paging toolbar on data load and enable it on load completed.

Code:
grid.getStore().getLoader().addLoadListener(new LoadListener() {

@Override
public void loaderBeforeLoad(LoadEvent le) {
getPanel().getBottomComponent().setEnabled(false);
}

@Override
public void loaderLoad(LoadEvent le) {
getPanel().getBottomComponent().setEnabled(true);
super.loaderLoad(le);
}
});

Hope this code is useful to you too.