This is a bit of a hack, but seems to work OK:
http://jsfiddle.net/q43HC/6/
var data = [{
data1: 'test',
data2: 'test'
}, {
data1: 'test2',
data2: 'test2'
}];
var store = Ext.create('Ext.data.Store', {
fields: ['data1', 'data2'],
data: data
});
Ext.define('SampleGrid', {
extend: 'Ext.grid.Panel',
store: store,
height: 250,
width: 400,
title: 'My Window',
columns: [{
text: 'test',
dataIndex: 'data1'
}, {
text: 'test2',
dataIndex: 'data2'
}],
bbar: [{
text: 'Clear Store',
handler: function() {
store.removeAll();
var grid = this.up('grid'),
cols = grid.query('gridcolumn'),
i = 0,
len = cols.length;
for (; i < len; i++) {
cols[i].doSort(null);
cols[i].__toggleSortState = cols[i].toggleSortState;
cols[i].toggleSortState = function() {};
}
}
}, {
text: 'Reload Store',
handler: function() {
store.loadData(data);
var grid = this.up('grid'),
cols = grid.query('gridcolumn'),
i = 0,
len = cols.length;
for (; i < len; i++) {
if (cols[i].__toggleSortState) {
cols[i].toggleSortState = cols[i].__toggleSortState;
}
}
}
}],
renderTo: Ext.getBody()
});
Ext.onReady(function() {
var grd = new SampleGrid();
});
I am just changing the sort state when the data is removed in order to remove any current sorting then replacing the toggleSortState function with an empty one so clicking the header will not sort the column. When reloading the store I put the function back.. You will have to adapt this to your project, but could create a store aware grid with similar logic.