File : controls/sortableListControl/DragStartListItemEL.js

1
/*
2
Copyright - 2017 2023 - wwwouaiebe - Contact: https://www.ouaie.be/
3
4
This  program is free software;
5
you can redistribute it and/or modify it under the terms of the
6
GNU General Public License as published by the Free Software Foundation;
7
either version 3 of the License, or any later version.
8
9
This program is distributed in the hope that it will be useful,
10
but WITHOUT ANY WARRANTY; without even the implied warranty of
11
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12
GNU General Public License for more details.
13
14
You should have received a copy of the GNU General Public License
15
along with this program; if not, write to the Free Software
16
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17
*/
18
/*
19
Changes:
20
    - v4.0.0:
21
        - created from v3.6.0
22
Doc reviewed 202208
23
 */
24
25
/* ------------------------------------------------------------------------------------------------------------------------- */
26
/**
27
Drag start on an list item event listener
28
*/
29
/* ------------------------------------------------------------------------------------------------------------------------- */
30
31
class DragStartListItemEL {
32
33
    /**
34
    The constructor
35
    */
36
37
    constructor ( ) {
38
        Object.freeze ( this );
39
    }
40
41
    /**
42
    Event listener method
43
    @param {Event} dragStartEvent The event to handle
44
    */
45
46
    handleEvent ( dragStartEvent ) {
47
        dragStartEvent.stopPropagation ( );
48
        try {
49
            dragStartEvent.dataTransfer.setData ( 'ObjId', dragStartEvent.target.dataset.tanObjId );
50
            dragStartEvent.dataTransfer.dropEffect = 'move';
51
        }
52
        catch ( err ) {
53
            if ( err instanceof Error ) {
54
                console.error ( err );
55
            }
56
        }
57
    }
58
}
59
60
export default DragStartListItemEL;
61
62
/* --- End of file --------------------------------------------------------------------------------------------------------- */
63