extjs - Excel-like behaviour of Grids in Ext JS -

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i'm trying figure out way have excel-like behavior grids on ext js.

here sample grid working with. far can naviguate through cells arrows in edit mode.

however trying reach naviguation arrows, tab , enter keys outside of edit mode, excel.

i tried integrate piece of code overrides editor class, hoping change behavior of cells doesn't change thing.

i believe important part overrides editor class , tries include keys input : 

ext.override(ext.editor, { startedit: function (el, value) {     var me = this,         field = me.field;      me.completeedit();     me.boundel = ext.get(el);     value = ext.isdefined(value) ? value : me.boundel.dom.innerhtml;      if (!me.rendered) {         me.render(me.parentel || document.body);     }      if (me.fireevent('beforestartedit', me, me.boundel, value) !== false) {         me.startvalue = value;         me.show();         field.reset();          if (deletegridcellvalue) {             field.setvalue('');             me.editing = true;             me.completeedit();             deletegridcellvalue = false; // reset global variable         }         else {             if (newgridcellvalue == '') {                 // default behaviour of ext.editor (see source if needed)                 field.setvalue(value);             }             else {                 // custom behaviour handle alphanumeric key press non-edit mode                 field.setrawvalue(newgridcellvalue);                 newgridcellvalue = ''; // reset global variable                  if (field instanceof ext.form.field.combobox) {                     // force combo box's filtered dropdown list displayed (some browsers need this)                     field.doquerytask.delay(field.querydelay);                 }             }              me.realign(true);             field.focus(false, 10);             if (field.autosize) {                 field.autosize();             }             me.editing = true;         }     } } });

this first time working on project outside of comp-sci classes appreciated. !


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