Grid Renderer"
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Revision as of 08:17, 11 January 2022
When a grid (Grid) is assigned with a model, a default renderer is assigned too[1]. The default renderer will assume that each row has only one column, and it converts the data into a string directly[2]. If you want to display multiple columns or retrieve a particular field of the data, you have to implement RowRenderer to handle the rendering.
For example,
public class FoodGroupRenderer implements RowRenderer, java.io.Serializable {
public void render(Row row, Object obj, int index) {
if (row instanceof Group) {
row.appendChild(new Label(obj.toString()));
} else {
User user = (User) obj;
row.appendChild(new Label(user.getName()));
row.appendChild(new Label(user.getDescription()));
row.appendChild(new Label(user.getDomain()));
}
}
}
- ↑ For the concept about component, model and renderer, please refer to the Model-driven Display section.
- ↑ If the grid is assigned a template called model, then the template will be used to render the grid. For more information, please refer to the Grid Template section.
Version History
| Version | Date | Content |
|---|---|---|
| 6.0.0 | February 2012 | The index argument was introduced. |