rem: qx.Proto._onmousewheel = function(vTarget, vEvent) { if(vTarget == null) { return; }    if(vTarget.getOverflowY() == qx.ui.core.Widget.SCROLL_VALUE_HIDDEN) { return this._onmousewheel(vTarget.getParent(), vEvent); }  var vScrollTop = vTarget.getScrollTop(); var vDelta = 20 * vEvent.getWheelDelta();    if(vScrollTop == 0 && vDelta > 0) { return this._onmousewheel(vTarget.getParent(), vEvent); }  var vScrollHeight = vTarget.getScrollHeight(); var vClientHeight = vTarget.getClientHeight();    if(vScrollTop + vClientHeight >= vScrollHeight && vDelta < 0) { return this._onmousewheel(vTarget.getParent(), vEvent); }   vTarget.setScrollTop(vScrollTop - vDelta);   vEvent.preventDefault(); } 
add: qx.Proto._onmousewheel = function() {}; 
context:   qx.Proto._onmousewheel = function(vTarget, vEvent)  {    if(vTarget == null) {      return;    }    // ingore if overflow is configured as hidden    // in this case send the event to the parent instead    if(vTarget.getOverflowY() == qx.ui.core.Widget.SCROLL_VALUE_HIDDEN) {      return this._onmousewheel(vTarget.getParent(), vEvent);    }    var vScrollTop = vTarget.getScrollTop();    var vDelta = 20 * vEvent.getWheelDelta();    // if already at the top edge and the user scrolls up    // then send the event to the parent instead    if(vScrollTop == 0 && vDelta > 0) {      return this._onmousewheel(vTarget.getParent(), vEvent);    }    var vScrollHeight = vTarget.getScrollHeight();    var vClientHeight = vTarget.getClientHeight();    // if already at the bottom edge and the user scrolls down    // then send the event to the parent instead    if(vScrollTop + vClientHeight >= vScrollHeight && vDelta < 0) {      return this._onmousewheel(vTarget.getParent(), vEvent);    }    // apply new scroll position    vTarget.setScrollTop(vScrollTop - vDelta);    // stop default handling, that works sometimes, too    vEvent.preventDefault();  }
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/15a06ad995f24c4c5a851c994cbc55304d88595b/EventHandler.js/clean/qooxdoo/frontend/source/script/qx/event/handler/EventHandler.js