如何在rcp应用程序的工具栏中显示撤消和重做动作

问题描述：

我正在使用一个带有工具栏的rcp应用程序来快速访问某些操作，包括撤消和重做.我的问题是，这两个特定操作没有显示在工具栏中.我已将原因定位到应用程序启动时生成的 workbench.xmi 文件.具有属性 key ="persp.hiddenItems" 的标签 persistedState 包含 persp.hideToolbarSC:org.eclipse.ui.edit.undo，persp.hideToolbarSC:org.eclipse.ui.edit.redo 在 value ="..." 属性中.如果我从 workbench.xmi 中删除这些条目，则撤消和重做操作将按原样显示在工具栏中.

I am working on an rcp application with a toolbar for quick access to certain actions, including undo and redo. My problem is that these two specific actions don't show up in the toolbar. I have located the cause to the workbench.xmi file that is generated when the application launches. A tag persistedState with an attribute key="persp.hiddenItems" contains persp.hideToolbarSC:org.eclipse.ui.edit.undo,persp.hideToolbarSC:org.eclipse.ui.edit.redo in the value="..." attribute. If I delete these entries from workbench.xmi, the undo and redo actions show up in the toolbar as they should.

我的问题是:我该怎么做才能使 org.eclipse.ui.edit.undo 和 org.eclipse.ui.edit.redo 不会结束可以从这个属性开始吗?

My question is: What can I do so that org.eclipse.ui.edit.undo and org.eclipse.ui.edit.redo don't end up in this attribute to begin with?

我最初使用eclipse neon时没有这个问题，但是当更新到Eclipse 2018-12时，这开始发生.

I originally used eclipse neon without this problem, but when updating to eclipse 2018-12 this started happening.

我最终通过将撤消和重做操作的ID更改为其他内容来使其正常工作.我必须在动作的构造函数中使用 setId(...)和 setActionDefinedId(...)设置ID，然后必须在< command id ="..."中< extension point ="org.eclipse.ui.commands"> 下的code> plugin.xml 撤消"></command> 标记.

I finally got it to work by changing the IDs of my undo and redo actions to something else. I had to set the ID with setId(...) and setActionDefinedId(...) in the actions' constructors, and then the commands had to be defined in plugin.xml under <extension point="org.eclipse.ui.commands"> in a <command id="..." name="Undo"></command> tag.

此解决方案比实际解决方案更像是一种解决方法，但对我有用.

This solutions feels more like a workaround than an actual solution, but it works for me.

答

这是由 org.eclipse.ui.perspectiveExtensions 扩展点的 hiddenToolBarItem 元素设置的.

This is set by the hiddenToolBarItem element of the org.eclipse.ui.perspectiveExtensions extension point.

org.eclipse.ui.ide 插件使用它来禁用以下工具栏项:

The org.eclipse.ui.ide plug-in uses this to disable these tool-bar items:

  <extension
         point="org.eclipse.ui.perspectiveExtensions">
      <perspectiveExtension targetID="*">
         <!--
              disable "print" button which is defined by org.eclipse.ui.actions.ActionFactory.PRINT
              and contributed by org.eclipse.ui.internal.ide.WorkbenchActionBuilder
         -->
         <hiddenToolBarItem id="print" />
         <!--
              disable "undo" button which is defined by org.eclipse.ui.actions.ActionFactory.UNDO
              and contributed by org.eclipse.ui.internal.ide.WorkbenchActionBuilder
         -->
         <hiddenToolBarItem id="org.eclipse.ui.edit.undo" />
         <!--
              disable "redo" button which is defined by org.eclipse.ui.actions.ActionFactory.REDO
              and contributed by org.eclipse.ui.internal.ide.WorkbenchActionBuilder
         -->
         <hiddenToolBarItem id="org.eclipse.ui.edit.redo" />
      </perspectiveExtension>
   </extension>

除了放弃插件外，我没有其他清除方法.

I don't see a way to clear this other than leaving out the plug-in.

如何在rcp应用程序的工具栏中显示撤消和重做动作

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