JasonYates.co.uk

A known issue with the ExtJS CheckboxSelectionModel is that when the grid is reloaded (e.g. an AJAX command is ran to delete selected rows) the header checkbox remains checked.

A solution to the issue is to override the clearSelections function to force the header to be unchecked.

Ext.override(Ext.grid.CheckboxSelectionModel, {

 clearSelections : Ext.grid.CheckboxSelectionModel.

         prototype.clearSelections.createSequence(function(fast){

 var hdCheckbox = this.grid.getEl().select(‘.x-grid3-hd-checker-on’);

      if(hdCheckbox) hdCheckbox.removeClass(‘x-grid3-hd-checker-on’);

  })

});