configureSearch(inputSelector: string, clickSelector: string) {
    const searchFn = this.search;
    if (this.grid.options.search == null) {
        throw "search field(s) not set for grid.";
    }

    const inputElement = $(inputSelector).keypress(function (this: HTMLElement, e) {
        const keycode = (e.keyCode ? e.keyCode : e.which);
        if (keycode === 13) {
            searchFn($(this));
        }
    });
    $(clickSelector).click(e => {
        searchFn(inputElement);
    });
}
private search(inputElement: JQuery<HTMLElement>) {
    const options = this.grid.options;
    const dsOptions = this.dataSource.options as kendo.ui.GridScrollable;  // HACK: dataSource.options isn't really a GridScrollable, but it's similar
    let searchFields: string[] | any = options.search ? options.search.fields : null;
    let expression: kendo.data.DataSourceFilters = {
        filters: [],
        logic: "or"
    };
    const value = inputElement.val();
    if (!searchFields) {
        searchFields = getColumnsFields(options.columns);
    }
    // NOTE: Thankfully we don't use endless
    if (dsOptions.endless) {
        dsOptions.endless = null;
        //(this as any)._endlessPageSize = this.dataSource.options.pageSize;
    }
    if (value) {
        for (let i = 0; i < searchFields.length; i++) {
            expression.filters.push({
                field: searchFields[i],
                operator: "contains",
                value: value
            });
        }
    } else {
        expression = {};
    }
    this.dataSource.filter(expression);

    // from Telerik:
    function leafColumns(columns: kendo.ui.GridColumn[]): kendo.ui.GridColumn[] {
        /* Hiding ... go see Telerik source code */
    }
    function getColumnsFields(columns: kendo.ui.GridColumn[]): string[] {
        /* Hiding ... go see Telerik source code */
    }
}