1: <?php
 2: 
 3: namespace Yajra\Datatables\Contracts;
 4: 
 5: /**
 6:  * Interface DataTableButtonsContract.
 7:  *
 8:  * @package Yajra\Datatables\Contracts
 9:  * @author  Arjay Angeles <aqangeles@gmail.com>
10:  */
11: interface DataTableButtonsContract
12: {
13:     /**
14:      * Export to excel file.
15:      *
16:      * @return mixed
17:      */
18:     public function excel();
19: 
20:     /**
21:      * Export to CSV file.
22:      *
23:      * @return mixed
24:      */
25:     public function csv();
26: 
27:     /**
28:      * Export to PDF file.
29:      *
30:      * @return mixed
31:      */
32:     public function pdf();
33: 
34:     /**
35:      * Display printer friendly view.
36:      *
37:      * @return mixed
38:      */
39:     public function printPreview();
40: }
41: