static/ext/src/panel/Table.js
function(columns) {
        var i,
            len = columns.length,
            column;

        for (i = 0; i < len; i++) {
            column = columns[i];
            if (!column.processed && column.locked) {
                return true;
            }
        }
    }
function(columns) {
        var i,
            len = columns.length,
            column;

        for (i = 0; i < len; i++) {
            column = columns[i];
            if (!column.processed && column.locked) {
                return true;
            }
        }
    }
Private. Determine if there are any columns with a locked configuration option