# Wednesday, September 27, 2017¶

The lino_xl.lib.ledger.AccountingReport has a subtle but disturbing problem: since building all the reports can take a second or ten, it is annoying that Lino tries to do it again and again each time I change some parameter value.

A first approach for fixing this might be to have an “explicit refresh button” and to disable the automatic refreshing after each parameter field change.

## The refresh button¶

Currently there is no lino.core.actions.Action object which represents the “Refresh” button.

A Lino.GridPanel has a Ext.PagingToolbar (or Ext.toolbar.Paging in ExtJS 6) as as tbar which has a built-in “refresh” button.

BTW this hard-coded button of the PagingToolbar does not call the refresh() method (which is a Lino concept) but store.load().

The Lino.GridPanel also calls its refresh() automatically after resize and viewready events.

The Lino.FormPanel (defined in linoweb.js) adds the refresh button itself:

this.tbar = this.tbar.concat([
{
handler:function(){ this.do_when_clean(false,this.refresh.createDelegate(this)) },

The Lino.MainPanel.add_params_panel() method adds a listener to the change events of the parameter panel fields.