com.threerings.gwt.util

Interface DataModel<T>

All Known Implementing Classes:

PagedServiceDataModel, ServiceBackedDataModel, SimpleDataModel

public interface DataModel<T>

An interface through which widgets such as PagedGrid may request paged server-side data asynchronously.

Method Summary

Methods

Modifier and Type	Method and Description
void	doFetchRows(int start, int count, AsyncCallback<List<T>> callback) Perform a paged data request for the given number of items at the given offset into the result set.
int	getItemCount() Returns the total number of items in this model.
void	removeItem(T item) Called when we wish to remove an item from our locally cached data.

Method Detail

getItemCount

int getItemCount()

Returns the total number of items in this model. It is OK if this returns zero until after the first call to doFetchRows(int, int, com.google.gwt.user.client.rpc.AsyncCallback<java.util.List<T>>) is called back. You may also return -1 to indicate that this model does not supply a row count, and the pager should continue offering pages for as long as the underlying service is able to satisfy the requests.

doFetchRows

void doFetchRows(int start,
               int count,
               AsyncCallback<List<T>> callback)

Perform a paged data request for the given number of items at the given offset into the result set. The result is returned through the given callback.

removeItem

void removeItem(T item)

Called when we wish to remove an item from our locally cached data.