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/* ************************************************************************
qooxdoo - the new era of web development
http://qooxdoo.org
Copyright:
2004-2007 1&1 Internet AG, Germany, http://www.1and1.org
License:
LGPL: http://www.gnu.org/licenses/lgpl.html
EPL: http://www.eclipse.org/org/documents/epl-v10.php
See the LICENSE file in the project's top-level directory for details.
Authors:
* Sebastian Werner (wpbasti)
* Andreas Ecker (ecker)
************************************************************************ */
/* ************************************************************************
************************************************************************ */
qx.OO.defineClass("qx.ui.pageview.AbstractBar", qx.ui.layout.BoxLayout,
function()
{
qx.ui.layout.BoxLayout.call(this);
this._manager = new qx.manager.selection.RadioManager;
this.addEventListener("mousewheel", this._onmousewheel);
});
/*
---------------------------------------------------------------------------
UTILITY
---------------------------------------------------------------------------
*/
qx.Proto.getManager = function() {
return this._manager;
}
/*
---------------------------------------------------------------------------
EVENTS
---------------------------------------------------------------------------
*/
qx.Proto._lastDate = (new Date(0)).valueOf();
qx.Proto._onmousewheel = function(e)
{
// Make it a bit lazier than it could be
// Hopefully this is a better behaviour for fast scrolling users
var vDate = (new Date).valueOf();
if ((vDate - 50) < this._lastDate) {
return;
}
this._lastDate = vDate;
var vManager = this.getManager();
var vItems = vManager.getEnabledItems();
var vPos = vItems.indexOf(vManager.getSelected());
if (this.getWheelDelta(e) > 0)
{
var vNext = vItems[vPos+1];
if (!vNext) {
vNext = vItems[0];
}
}
else if (vPos > 0)
{
var vNext = vItems[vPos-1];
if (!vNext) {
vNext = vItems[0];
}
}
else
{
vNext = vItems[vItems.length-1];
}
vManager.setSelected(vNext);
}
qx.Proto.getWheelDelta = function(e) {
return e.getWheelDelta();
}
/*
---------------------------------------------------------------------------
DISPOSER
---------------------------------------------------------------------------
*/
qx.Proto.dispose = function()
{
if (this.getDisposed()) {
return;
}
if (this._manager)
{
this._manager.dispose();
this._manager = null;
}
this.removeEventListener("mousewheel", this._onmousewheel);
return qx.ui.layout.BoxLayout.prototype.dispose.call(this);
}
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