Custom cell in CellTable with TextCell and SelectionCell

Hi everybody,

I am trying to implement a custom cell for my CellTable showing a TextCell or a SelectionCell. The decision is made by an enum value in my model. 

To add the cell to my table I made a custom column, source under the cell. The Last snippets shows how I add the cell to my table. 

Problem / question:

Rendering is working well. But the cell doesn't react on changes.

When I try to add a FieldUpdater to the cell, eclipse says I need to provide a FieldUpdater in my column class. I have no idea how it looks like.

Is there a proper way to add FieldUpdater<Model, C> to my class? Sources below.

Thanks a lot in advance. When it works, I am going to publish a simplified example and will share the link here.

Best regards

Jochen

CustomStatusCell

public class CustomStatusCell<C> extends AbstractCell<C> {    public static final MasterDataConstants CONSTANTS = (MasterDataConstants) GWT.create(MasterDataConstants.class);    private TextCell textCell;  private SelectionCell selectCell;    private String text = "";    public CustomStatusCell() {      textCell = new TextCell();  }    @Override  public void render(com.google.gwt.cell.client.Cell.Context context, C object, SafeHtmlBuilder sb) {        if (shouldRenderInput(object)) {          selectCell.render(context, text, sb);      } else {          textCell.render(context, text, sb);      }  }    @Override  public void onBrowserEvent(Context context, Element parent, final C object, NativeEvent event, final ValueUpdater<C> valueUpdater) {      if (shouldRenderInput(object)) {          selectCell.onBrowserEvent(context, parent, (String) object, event, new ValueUpdater<String>() {                @Override              public void update(String value) {                  updateValue(value, object);              }          });      } else {          textCell.onBrowserEvent(context, parent, (String) object, event, new ValueUpdater<String>() {                @Override              public void update(String value) {                  updateValue(value, object);              }          });      }  }    protected void updateValue(String value, C object) {  }    boolean shouldRenderInput(C object) {        Model model = (Model) object;        switch (m.getStatus()) {      case NEW: {          List<String> list = new ArrayList<String>();          list.add(CONSTANTS.statusValueNewNew());          list.add(CONSTANTS.statusValueNewReleased());          list.add(CONSTANTS.statusValueNewNoImport());            selectCell = new SelectionCell(list);          return true;      }      case RELEASED: {          text = CONSTANTS.statusValueReleased();          return false;      }      case ERROR: {          text = CONSTANTS.statusValueError();          return false;      }      default: {          return false;      }      }  }

Column

CustomStatusColumn<Model> statusColumn = new CustomStatusColumn<Model>() {

@Override

public ImportModel getValue(Model model) {

return model;

}

};

CellTable

CustomStatusColumn<Model> statusColumn = new CustomStatusColumn<Model>() {  	@Override  	public ImportModel getValue(Model model) {  		return model;  	}  };  statusColumn.setDataStoreName(ImportDataStoreConstants.getStatus());  statusColumn.setSortable(true);  this.addColumn(statusColumn, CONSTANTS.statusLabel());

 

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