In search box if i give any name then according to the input text it should find and highlight all the nodes which having similar name on CONTINUES click of search button.
how to get the NEXT functionality in search button.
Have you seen the searching functionality in Org Chart Static ?
That involves calling Diagram.findNodesByExample and then highlighting them (as done in that sample, combined with template Bindings depending on Part.isHighlighted) or selecting them.
Then you can scroll to each one by calling CommandHandler.scrollToPart. Or the user can do that by pressing the Space key repeatedly.