src/aria/utils/Mouse.js
function (coordinates) {
                var element = this._candidateForDrag;
                if (!element) {
                    return;
                }

                this._activeDrag = element;
                this._dragStarted = true;
                element.start(coordinates);
            }
function (coordinates) {
                var element = this._candidateForDrag;
                if (!element) {
                    return;
                }

                this._activeDrag = element;
                this._dragStarted = true;
                element.start(coordinates);
            }
function ( coordinates ) { var element = this . _candidateForDrag ; if ( ! element ) { return ; } this . _activeDrag = element ; this . _dragStarted = true ; element . start ( coordinates ) ; }
After an activation delay, if no mouseup event is raised the drag has started.
@param {Object} coordinates X and Y coordinates of the initial mouse position
@private
After an activation delay if no mouseup event is raised the drag has started .