/// <summary>
/// Fires when a new tab has been activated (activated by setActiveTab).
/// </summary>
/// <param name="grouptabPanel"><p>The GroupTabPanel</p>
/// </param>
/// <param name="newCard"><p>The newly activated item</p>
/// </param>
/// <param name="oldCard"><p>The previously active item</p>
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void tabchange(GroupTabPanel grouptabPanel, Ext.Component newCard, Ext.Component oldCard, object eOpts)
{
}
/// <summary>
/// Fires before a tab change (activated by setActiveTab). Return false in any listener to cancel
/// the tabchange
/// </summary>
/// <param name="grouptabPanel"><p>The GroupTabPanel</p>
/// </param>
/// <param name="newCard"><p>The card that is about to be activated</p>
/// </param>
/// <param name="oldCard"><p>The card that is currently active</p>
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void beforetabchange(GroupTabPanel grouptabPanel, Ext.Component newCard, Ext.Component oldCard, object eOpts){}
/// <summary>
/// Fires when a new group has been activated (activated by setActiveGroup).
/// </summary>
/// <param name="grouptabPanel"><p>The GroupTabPanel</p>
/// </param>
/// <param name="newGroup"><p>The newly activated root group item</p>
/// </param>
/// <param name="oldGroup"><p>The previously active root group item</p>
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void groupchange(GroupTabPanel grouptabPanel, Ext.Component newGroup, Ext.Component oldGroup, object eOpts)
{
}
/// <summary>
/// Fires before a group change (activated by setActiveGroup). Return false in any listener to cancel
/// the groupchange
/// </summary>
/// <param name="grouptabPanel"><p>The GroupTabPanel</p>
/// </param>
/// <param name="newGroup"><p>The root group card that is about to be activated</p>
/// </param>
/// <param name="oldGroup"><p>The root group card that is currently active</p>
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void beforegroupchange(GroupTabPanel grouptabPanel, Ext.Component newGroup, Ext.Component oldGroup, object eOpts){}
