GWT: How to programmatically reload CellBrowser?

Question

I\'m using GWT 2.1\'s CellBrowser with a custom TreeViewModel. The TreeViewModel in turn uses an AsyncDataProvider to fetch data dynamically. This all

Answer 1

I don't understand why affablebloke's answer is marked as "correct" and upvoted so much!?

Caffeine Coma asked about updating a Cell Browser and not a Cell Table, that are totally different things!

For me, the following trick worked: I define the DataProviders outside of the TreeViewModel and pass them as an argument to the constructor. In my case they provide empty data structures at the beginning.

Now you have a reference to the DataProviders from "outside" in order to update the Cell Browser.

Example:

private class MyTreeViewModel implements TreeViewModel {

    AbstractDataProvider myDataProvider;

    public MyTreeViewModel(AbstractDataProvider myDataProvider)
    {
        this.myDataProvider = myDataProvider;
    }

    @Override
    public  NodeInfo getNodeInfo(T value) {
        if(value == null)
        {
            // Level 0
            return new DefaultNodeInfo(myDataProvider, new MyCellImpl());
        }
    }
}


AbstractDataProvider myDataProvider = new ListDataProvider(new ArrayList()); // or AsyncDataProvider
MyTreeViewModel myModel = new MyTreeViewModel(myDataProvider);

CellBrowser cellBrowser = new CellBrowser.Builder(myModel, null).build();

/*
  here you can do some stuff, for example, bind the CellBrowser to a template with UiBinder
*/

/*
 if you use a ListDataProvider, do
*/

myDataProvider.setList(myDataStructureFromSomewhere);
myDataProvider.refresh();

/*
 if you use an AsyncDataProvider, do
*/

myDataProvider.updateRowData(..., myDataStructureFromSomewhere);
myDataProvider.updateRowCount(...);