/**
 * Ext JS Library 3.4.0
 * Copyright(c) 2006-2011 Sencha Inc.
 * licensing@sencha.com
 * http://www.sencha.com/license
 */
(function() {
    Ext.override(Ext.list.Column, {
        init: function() {
            var types = Ext.data.Types,
                st = this.sortType;

            if (this.type) {
                if (Ext.isString(this.type)) {
                    this.type =
                        Ext.data.Types[this.type.toUpperCase()] || types.AUTO;
                }
            } else {
                this.type = types.AUTO;
            }

            // named sortTypes are supported, here we look them up
            if (Ext.isString(st)) {
                this.sortType = Ext.data.SortTypes[st];
            } else if (Ext.isEmpty(st)) {
                this.sortType = this.type.sortType;
            }
        },
    });

    Ext.tree.Column = Ext.extend(Ext.list.Column, {});
    Ext.tree.NumberColumn = Ext.extend(Ext.list.NumberColumn, {});
    Ext.tree.DateColumn = Ext.extend(Ext.list.DateColumn, {});
    Ext.tree.BooleanColumn = Ext.extend(Ext.list.BooleanColumn, {});

    Ext.reg('tgcolumn', Ext.tree.Column);
    Ext.reg('tgnumbercolumn', Ext.tree.NumberColumn);
    Ext.reg('tgdatecolumn', Ext.tree.DateColumn);
    Ext.reg('tgbooleancolumn', Ext.tree.BooleanColumn);
})();
