我想设置一个CellList,以便点击一行将切换选择。这样就可以选择多行而不需要按住ctrl键。
我需要更改什么才能让它正常工作?
class ToggleEventTranslator<T> implements DefaultSelectionEventManager.EventTranslator<T> {
@Override
public boolean clearCurrentSelection(final CellPreviewEvent<T> event) {
return false;
}
@Override
public SelectAction translateSelectionEvent(final CellPreviewEvent<T> event) {
return SelectAction.TOGGLE;
}
}
MultiSelectionModel<ObjProxy> multiSelectionModel = new MultiSelectionModel<ObjProxy>();
ocjCellList.setSelectionModel(multiSelectionModel, DefaultSelectionEventManager
.<ObjProxy> createCustomManager(new ToggleEventTranslator<ObjProxy>()));
答案 0 :(得分:8)
list.addCellPreviewHandler(new Handler<T>() {
@Override
public void onCellPreview(final CellPreviewEvent<T> event) {
if (BrowserEvents.CLICK.equals(event.getNativeEvent().getType())) {
final T value = event.getValue();
final Boolean state = !event.getDisplay().getSelectionModel().isSelected(value);
event.getDisplay().getSelectionModel().setSelected(value, state);
event.setCanceled(true);
}
}
});
private final MultiSelectionModel<T> selectModel = new MultiSelectionModel<T>();
final Handler<T> selectionEventManager = DefaultSelectionEventManager.createCheckboxManager();
list.setSelectionModel(selectModel, selectionEventManager);
答案 1 :(得分:3)
“无论您是否添加了复选框列,都必须add a cell preview handler。最简单的定义方法是使用DefaultSelectionEventManager,使用checkbox manager组合一个复选框列,或creating a custom one(您将点击事件映射到toggle action)。
您可以在GWT Showcase中看到它使用了复选框变体;它使用带有两个参数的setSelectionModel
重载来同时添加CellPreviewEvent.Handler
。“
(归功于this answer)