Example the latest version uniGui.
Serverside its worked.
https://github.com/marlonnardi/extjs-ux-paging-toolbar-resizer/blob/master/ux/PagingToolbarResizer.js
function beforerender(sender, eOpts)
{
if (sender.pagingBar) {
sender.removeDocked(sender.pagingBar, true);
sender.addDocked({
dock: 'bottom',
items: [Ext.create('Ext.PagingToolbar', {
pageSize: sender.store.pageSize,
store: sender.store,
displayInfo: true,
displayMsg: 'Visualizando {0} - {1} de <b>{2}</b>',
emptyMsg: "Não há registros",
plugins: Ext.create('Ext.ux.PagingToolbarResizer', {
displayText: 'Registros por página',
options: [25, 50, 100, 150, 200]
})
})]
});
}
}
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PageSizeExtension.rar