如何在 Eclipse RCP 中将 TableViewer 绑定到 java.util.List

发布于 2024-09-13 15:44:39 字数 596 浏览 6 评论 0原文

我正在尝试将 TableViewer 绑定到 a

models = List<ModelObject>

，但我并没有真正掌握它的窍门。绑定应该可以通过主从和数据绑定上下文（DataBindingContext）进行，以便我能够仅根据请求将列表（及其元素）的更改写入模型（dbc 设置为 POLICY_ON_REQUEST），即在编辑器的保存操作中。对于简单的文本字段，这就像一个魅力，但我找不到 TableViewers 的任何类似示例。当我查看 ViewerSupport 实例的 API 时，我只能绑定它，但不能选择提供 DBC 或主从。这是有效的：

ViewerSupport.bind(aViewer, new WritableList(models, ModelObject.class), BeanProperties.value(ModelObject.class, "name")));

但正如所述，它不允许使用 dbc 或主从。

有没有解决方案，或者 TableViewer 只是不支持数据绑定，因为我打算使用它？是否有解决方法或我错过的一些 API？

谢谢您提前的答复！

原文

I'm trying to bind a TableViewer to a

models = List<ModelObject>

, but I don't really get the hang of it. The binding should be possible via master-detail and a databinding context (DataBindingContext), so that I'm able to write the changes of the list (and its elements) to the model only on request (dbc being set to POLICY_ON_REQUEST), i.e. in a saving action of an editor.
With simple Text fields this works like a charm, but I can't find any similar example for TableViewers.
When I look at the API for instance of ViewerSupport, then I can only bind it, but without the option of giving a DBC or a master-detail. This works:

ViewerSupport.bind(aViewer, new WritableList(models, ModelObject.class), BeanProperties.value(ModelObject.class, "name")));

But as stated it doesn't allow to use a dbc nor a master-detail.

Is there a solution to that, or does TableViewer just not support databinding as I intend to use it?
Is there a workaround or some API i missed?

Thx for the answers in advance!

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清引 2024-09-20 15:44:39

现在我进一步了解了如何使用主从：

tmp = BeansObservables.observeDetailList(masterObservable,
                            "name", ModelObject.class)
ViewerSupport.bind(aViewer, tmp, BeanProperties.value(ModelObject.class, "name")));

问题仍然存在，如何使列表中的更改和列表元素不直接持久化（即 POLICY_ON_REQUEST），以便我可以将它们保存在用户上要求。更具体地说：如何在某处注入 DataBindingContext...

Now that I looked a bit further I figured out how to use master-detail:

tmp = BeansObservables.observeDetailList(masterObservable,
                            "name", ModelObject.class)
ViewerSupport.bind(aViewer, tmp, BeanProperties.value(ModelObject.class, "name")));

The question remains, how to make the changes in the list and the list elements not directly persisting (that is POLICY_ON_REQUEST), so that I can save them on user request. More specifically: How do I inject a DataBindingContext somewhere...

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