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beforeRowDrag

fires before dragging of a row has started

beforeRowDrag: (data: object, event: MouseEvent) => void | boolean;

Parameters:

The callback of the event is called with the following parameters:

  • data: object - data object. It contains the following properties:
    • start: string | number - the id of a row, from which the dragging process has started
    • source: array - an array with ids of dragged rows
    • target: string | number - the id of a potential target row
  • event: MouseEvent - a native HTML event object

Returns:

Return false to prevent dragging of a row; otherwise, true.

Example

treegrid.events.on("beforeRowDrag", (data, event) => {
    // your logic here
    return false;
});

Related sample: TreeGrid. Events

Change log:

added in v7.0