extjs - Query for child component with a specific xtype -
    Is there a method for querying a child component of xtype 'myxtype'? For example, you have a panel, and there is a custom proxy located on a toolbar inside this panel.   The searcher works great to type backups, but there is no method like FindBildType and the method below only works on the elements Ext.ComponentQuery is a singleton, but not for xtypes? Another way to ask about the component?       yourCt.down     yourCt .child  will do the same, but is limited to children directly, the first example of a container with the specified type of component children and lineage will be found. Container.    yourCt.query  will be  all  of matching components under the container as an array.    yourCt.up  will be available to the  guardian  before the matching container.   Oh, and  Ext.ComponentQuery.query  can move an optional object that is used as the starting point for the query.   These are all basic (and clearly documented)