objectContribution和command之间缺少链接 [英] Missing link between objectContribution and command

问题描述

当使用 objectContribution -element（它是 org.eclipse.ui.popupMenus - 扩展点），我经常（实际上总是）想委托一些命令，而不是自己实现一些动作（因为通常，我有命令和一个处理程序已经实现）。我这样做通过使用 ICommandService 和 IHandlerService ，但感觉应该有一种方法来实现这种编程。我可以使用 viewerContribution 而不是 objectContribution ，但是我会失去显示菜单项的简单方法，对象类型。理想情况下，我想使用已经存在的处理程序的启用检查，以应用到由 objectContribution 定义的菜单项。

When using the objectContribution-element (which is part of the org.eclipse.ui.popupMenus-extension point), I often (practically always) want to delegate to some command instead of implementing some action myself (since usually, I have the command and a handler already implemented). I'm doing this by using ICommandService and IHandlerService, but it feels there should be a way to achieve this programmatically. I could use viewerContribution instead of objectContribution, but then I would lose the easy way of showing the menu entry only when certain object types are selected. Ideally, I would like to use the enablement-checks that already exist for my handlers to apply to the menu entry defined by the objectContribution.

推荐答案

好吧，这里是我缺少的：而不是使用 org.eclipse.ui.popupMenus 点，我不得不使用 org.eclipse.ui.menus - 扩展点与 menuContribution 它的 locationURI - 属性指向弹出：org.eclipse.ui.popup.any？after = additions 。这个 menuContribution 可以包括命令 -element（实现直接绑定到现有命令的目标） code>命令 -element's visibleWhen -element可以绑定到绑定命令的处理程序的激活状态通过 checkEnabled -attribute（实现只有当命令处理程序的启用满足时弹出菜单条目才可见）。

Ok, here's what I was missing: instead of using the org.eclipse.ui.popupMenus-extension point, I had to use the org.eclipse.ui.menus-extension point with a menuContribution that has its locationURI-attribute pointing to popup:org.eclipse.ui.popup.any?after=additions. This menuContribution can include a command-element (achieving the goal of binding directly to an existing command), and this command-element´s visibleWhen-element can be bound to the activation status of the bound command's handler via the checkEnabled-attribute (achieving the goal of having the popup-menu entry visible only when the enablement for the command handler is satisfied).

有什么坏处是 org.eclipse.ui.menus -extension点的文档说明 org.eclipse.ui.popupMenus -extension point被视为已弃用，但是 org.eclipse.ui.popupMenus 的文档没有提到这个事实。

What's bad is that the documentation of the org.eclipse.ui.menus-extension point states that the org.eclipse.ui.popupMenus-extension point is to be considered deprecated, but the documentation of org.eclipse.ui.popupMenus does not mention this fact.

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