updateRowData()/updateRowCount() needs to be called on the data provider, not on the cell tree.
- You first create a cell tree, passing a tree model to the cell tree constructor. - The tree model will be creating node info nodes in TreeViewModel.getNodeInfo() - DefaultNodeInfo takes an instance of a data provider for its constructor - The data provider initiates an RPC call - When the data provider receives results back, it updates ITSELF, not the tree Take a look at the showcase code for more details http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTree On Jan 3, 11:30 pm, yeti <[email protected]> wrote: > Thank you Y2i, Your messages are greatly help to me > > But there is an another problem stuck in... updataRowCount() and > updataRowData should work with hasData, but cellTree doesnt implement > it, so my requestion is, as to cellTree, how do both functions above > work? > > On 2010年12月30日, 下午12时39分, Y2i <[email protected]> wrote: > > > > > > > > > It can be populated dynamically. Please take a look at this post: > > >http://groups.google.com/group/google-web-toolkit/msg/6a8f18668f046cc6 > > > When the data provider receives results back it needs to populate > > itself by calling > > > updateRowCount() > > updateRowData() > > > On Dec 29, 7:12 pm, yeti <[email protected]> wrote: > > > > Hi , > > > > I wonder if celltree can be built dynamically... getNodeInfo is > > > synchronous, so how to work with a asynchronous, that is , get node > > > info via a request? > > > > Someone said, > > > > "pass a ListDataProvider or AsyncDataProvider into DefaultNodeInfo. > > > Then you can return the NodeInfo synchronously, but populate the data > > > provider asynchronously. " > > > > Is it right when I return defaultNodeinfo , it will wait me to > > > populate the dataprovider? > > > > if not, could anyone show me more details? > > > > thanks in advance -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
