GWT CellList单击以切换选择(多选)

Question

我想设置一个CellList，以便单击一行将切换选择。这样一来，无需按住ctrl键就可以选择多行。

我需要进行哪些更改才能使其正常运行？

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>()));

Answer 1

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);