The below code is taken from *Data Presentation Widget documentation (*
http://code.google.com/webtoolkit/doc/latest/DevGuideUiCellWidgets.html#updating-database
)
public class CellListValueUpdaterExample implements EntryPoint {
/**
* The list of data to display.
*/
private static final List<String> DAYS = Arrays.asList("Sunday", "Monday",
"Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");
public void onModuleLoad() {
// Create a cell that will interact with a value updater.
EditTextCell inputCell = new EditTextCell();
// Create a CellList that uses the cell.
CellList<String> cellList = new CellList<String>(inputCell);
// Create a value updater that will be called when the value in a cell
// changes.
ValueUpdater<String> valueUpdater = new ValueUpdater<String>() {
public void update(String newValue) {
Window.alert("You typed: " + newValue);
}
};
// Add the value updater to the cellList.
cellList.setValueUpdater(valueUpdater);
// Set the total row count. This isn't strictly necessary, but it
// affects
// paging calculations, so its good habit to keep the row count up to
// date.
cellList.setRowCount(DAYS.size(), true);
// Push the data into the widget.
cellList.setRowData(0, DAYS);
// Add it to the root panel.
RootPanel.get().add(cellList);
}
}
When a cell is edited, the window alerts the new value.
*Is it possible to get the index of the modified value, such that I could
update the value in the original list?*
*
*
Something like:
ValueUpdater<List<String>, String> valueUpdater = new
ValueUpdater<List<String>, String>() {
@Override
public void update(int index, List<String> object, String value) {
object.set(index, value);
}
};
Thanks in advance!
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