javascript - extjs 4.2 treepanel bufferedRenderer scroll to specific node -

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i use extjs 4.2 , bufferedrenderer large tree. when need scroll specific node have use grid.view.bufferedrenderer.scrollto(rowindex) in http://docs.sencha.com/extjs/4.2.0/extjs-build/examples/grid/buffer-grid.html

but when not have row index node object how can scroll it? if tree nodes expanded - simple: have count previous nodes, if nodes collapsed?

you can try this

grid.getview().scrollrowintoview(rowindex)

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