static/ext/src/selection/Model.js
function(suppressEvent) {
        var me = this,
            selections = me.store.getRange(),
            i = 0,
            len = selections.length,
            start = me.getSelection().length;

        me.bulkChange = true;
        for (; i < len; i++) {
            me.doSelect(selections[i], true, suppressEvent);
        }
        delete me.bulkChange;
        // fire selection change only if the number of selections differs
        me.maybeFireSelectionChange(me.getSelection().length !== start);
    }
function(suppressEvent) {
        var me = this,
            selections = me.store.getRange(),
            i = 0,
            len = selections.length,
            start = me.getSelection().length;

        me.bulkChange = true;
        for (; i < len; i++) {
            me.doSelect(selections[i], true, suppressEvent);
        }
        delete me.bulkChange;
        // fire selection change only if the number of selections differs
        me.maybeFireSelectionChange(me.getSelection().length !== start);
    }
Selects all records in the view.
@param {Boolean} suppressEvent True to suppress any select events