toggle style menu contribution ,which is not persisted

原创于 2012-06-04 20:00:28 发布 · 919 阅读

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#menu #eclipse #class #command #button #user

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本文介绍了Eclipse中如何使用RegistryToggleState实现菜单项的状态管理，包括如何在plugin.xml中指定默认值及如何在不同会话间保持状态，还探讨了不希望在会话间保留状态的配置方式。

This is the definition,Menu Contributions/Toggle Button Command.

Use the RegistryToggleState has two reasons:

It implements IExecutableExtension. So you can specify the default values in the plugin.xml.
It extends PersistentState, so it can remember the value between Eclipse sessions. So if the user had checked/unchecked the menu, restarts Eclipse, he will get the same state as he left before - all this, you get without even your plugin being loaded.

But sometimes you don't want the state to be remembered between sessions,so yon can do this like:

<command
            categoryId="lear.IPDetector.category"
            id="lear.IPDetector.commands.startDectectCommand"
            name="Start Dectect">
         <state
               id="org.eclipse.ui.commands.toggleState">
               <class
                     class="org.eclipse.ui.handlers.RegistryToggleState">
                     <parameter
                           name="default"
                           value="false">
                     </parameter>
                     <parameter
                           name="persisted"
                           value="false">
                     </parameter>
               </class>
         </state>
      </command>