问题描述

我正在尝试使用 menuContribution 中的visibleWhen"表达式在上下文菜单中配置命令的可见性.我要做的是仅在以下情况下使命令在上下文菜单中可见:

I am trying configure visibility of a command within the context menu using 'visibleWhen' expression within a menuContribution. What I am trying to do is make the command visible in the context menu only if you:

1. 在资源视图(或包视图)中右键单击某些文件类型(资源)
2. 右键单击已打开文件类型的相应编辑器.它可以检测到我的编辑器已打开或该编辑器打开了某个资源.

我已经使用 'visibleWhen'>'selection(with)'>'iterate'>'org.eclipse.core.resources.IResource(adapt)' 完成了第一个，然后检查资源的文件扩展名.代码如下所示.但是，我不确定如何让相同的命令仅在您右键单击正确的编辑器时才出现，该编辑器打开了具有正确扩展名的文件 - ext1、ext2.

I've accomplished the first using 'visibleWhen'>'selection(with)'>'iterate'>'org.eclipse.core.resources.IResource(adapt)' then checking the file extension for the resource. The code is listed below. However, I'm not sure how to get the same command to only appear when you right-click the correct editor that has a file open with the correct extensions - ext1, ext2.

检查我的编辑器是否处于活动状态可以解决第二个问题，但似乎没有帮助，因为如果我单击不是我的类型的文件，它仍会在上下文菜单中显示命令.

Checking if my editor is active resolves the second issue but doesn't seem to help since if I click on files that are not my type, it will still show the command in the context menu.

有什么建议吗?Eclipse 插件(第 3 版)"显示了一些编辑器上下文菜单的示例，但它使用操作，我想坚持使用命令.

Any recommendations? The "Eclipse Plug-ins (3rd Edition)" shows some example for editor context menu but it uses actions and I want to stick with commands.

谢谢！！

  <menuContribution
        allPopups="false"
        locationURI="popup:org.eclipse.ui.popup.any?before=additions">
     <separator
           name="com.test.ide.separator1"
           visible="true">
     </separator>
     <menu
           icon="icons/sample.gif"
           label="Test Menu">
        <command
              commandId="com.test.commands.testCommand1"
              icon="icons/sample.gif"
              label="testCommand1"
              style="push"
              tooltip="This is a test command">
           <visibleWhen
                 checkEnabled="false">
              <with
                    variable="selection">
                 <iterate
                       ifEmpty="false"
                       operator="or">
                    <adapt
                          type="org.eclipse.core.resources.IResource">
                       <or>
                          <test
                                property="org.eclipse.core.resources.extension"
                                value="ext1">
                          </test>
                          <test
                                property="org.eclipse.core.resources.extension"
                                value="ext2">
                          </test>
                       </or>
                    </adapt>
                 </iterate>
              </with>
           </visibleWhen>
        </command>
     </menu>
  </menuContribution>

推荐答案

我能够使用我遇到的 with 变量来完成它.使用上面相同的代码示例:

I was able to get it done with a with variable that I came across. Using the same code example above:

• 在 <iterate> 块中添加 <or> 块
• 将现有的 <adapt> 块放入新的 <or> 块
• 添加一个名为 activeEditorInput 的新 with 变量

• Add an <or> block within the <iterate> block
• Place the existing <adapt> block in the new <or> block
• Add a new with variable called activeEditorInput

这是新的代码示例.

<iterate ifEmpty="false" operator="or">
  <or>
    <adapt type="org.eclipse.core.resources.IResource">
      <or>
        ...test extensions
      </or>
    </adapt>
    <with variable="activeEditorInput">
      <adapt type="org.eclipse.core.resources.IResource">
        <or>
          ...test extensions
        </or>
      </adapt>
    </with>
  </or>
</iterate>

这篇关于visibleWhen 命令出现在上下文菜单中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！