extjs - How to catch Delete key event in tree panel controller -


i have tree panel view (defined fileseditornavigtree) , controller. in controller want catch delete key event in order perform procedure. tried this:

... init:function(){     this.control({         'fileseditornavigtree':{              specialkey:function(a, b){                  alert(b.keycode); // testing reasons              }

but has no effect.

use rowkeydown listener of treepanel view.

ext.create('ext.tree.panel', {     title: 'simple tree',     width: 200,     height: 150,     store: store,     rootvisible: false,     renderto: ext.getbody(),     listeners : {         rowkeydown : function(view, record, tr, rowindex, e) {             if (e.keycode === 46) {                  console.log('hit delete');             }         }     } });

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