B2G/gecko/toolkit/content/tests/fennec-tile-testapp/chrome/content/WidgetStack.js
// dragMove: process a mouse move to clientX,clientY for an ongoing drag
process a mouse move to clientX,clientY for an ongoing drag
process a mouse move to clientX clientY for an ongoing drag
function dragMove(clientX, clientY) {
    if (!this._dragging)
      return false;
    this._dragCoordsFromClient(clientX, clientY);
    let panned = this._dragUpdate();
    if (this._viewportUpdateInterval != -1) {
      if (this._viewportUpdateTimeout != -1)
        clearTimeout(this._viewportUpdateTimeout);
      let self = this;
      this._viewportUpdateTimeout = setTimeout(function () { self._viewportDragUpdate(); }, this._viewportUpdateInterval);
    }
    return panned;
  }
function dragMove ( clientX , clientY ) { if ( ! this . _dragging ) return false ; this . _dragCoordsFromClient ( clientX , clientY ) ; let panned = this . _dragUpdate ( ) ; if ( this . _viewportUpdateInterval != - 1 ) { if ( this . _viewportUpdateTimeout != - 1 ) clearTimeout ( this . _viewportUpdateTimeout ) ; let self = this ; this . _viewportUpdateTimeout = setTimeout ( function ( ) { self . _viewportDragUpdate ( ) ; } , this . _viewportUpdateInterval ) ; } return panned ; }
dragMove: process a mouse move to clientX,clientY for an ongoing drag
dragMove : process a mouse move to clientX clientY for an ongoing drag