popup - 尽管有forcePluginActivation，但属性测试器不会加载。用于弹出菜单启用

Question

我负责重构公司 Eclipse 插件中的弹出菜单，以使用新的命令/处理程序/菜单扩展点方案。我们有一些关于何时启用或不启用某些菜单项的业务逻辑，这是通过应用于操作的 SelectionListener 的 onSelectionChanged 方法来处理的。我现在尝试使用自定义 PropertyTester 来控制启用，但似乎我的自定义 PropertyTester 尚未加载。我已经遵循了 Eclipse 的文档以及我可以在网上找到的任何教程，但由于某种原因它只是不想工作。即使我只是将“测试”方法设置为返回 true，它也不起作用，因为测试器甚至从未加载过(我放入了一些断点，但它们从未被击中)。我尝试在 xml 的测试中设置“forcePluginActivation='true'”标志，但这也无法解决这种情况。这是一些代码，其中公司名称替换​​为“company”，产品替换为“product”...

命令 XML

  <extension
         point="org.eclipse.ui.commands">
      <command
            categoryId="com.company.product.android.core.category2"
            id="com.company.product.android.core.commands.convertToProduct"
            name="Convert to product Android Project"
            description="The resources, jars and native library to begin developing an product for Android project application will be added to the Android project">
      </command>
      <category
            id="com.company.product.android.core.category2"
            name="Product Tools">
      </category>
   </extension>

处理程序 XML

   <extension
         point="org.eclipse.ui.handlers">
      <handler
            class="com.company.product.android.core.commands.ConvertToProduct"
            commandId="com.company.product.android.core.commands.convertToProduct">
        <enabledWhen>
            <reference
                definitionId="com.company.product.android.core.expressions.productProject">
            </reference>
        </enabledWhen>
      </handler>
   </extension>

定义 XML

  <extension>
        point="org.eclipse.core.expressions.definitions">
    <definition
        id="com.company.product.android.core.expressions.androidProjectNature">
        <with variable="selection">
            <iterate ifEmpty="false">
                <test
                    property="org.eclipse.core.resources.projectNature"
                    value="com.android.ide.eclipse.adt.AndroidNature">
                </test>
            </iterate>
        </with>
    </definition>
    <definition
        id="com.company.product.android.core.expressions.productProject">
        <with variable="selection">
            <iterate ifEmpty="false">
                <test
                    property="com.company.product.android.expressions.productProjectProperty"
                    forcePluginActivation="true">
                </test>
            </iterate>
        </with>
    </definition>
  </extension>

菜单 XML

   <extension
         point="org.eclipse.ui.menus">
      <menuContribution
         locationURI="popup:org.eclipse.ui.navigator.ProjectExplorer#PopupMenu?after=additions">
        <menu
               icon="icons/wht_ws.gif"
               id="com.company.product.android.core.tools"
               label="Product Tools">
            <visibleWhen>
                <reference 
                    definitionId="com.company.product.android.core.expressions.androidProjectNature">
                </reference>
            </visibleWhen>              
            <command
                commandId="com.company.product.android.core.commands.convertToProduct"
                label="Convert to Product Android Project"
                tooltip="The resources, jars and native library to begin developing an product for Android project application will be added to the Android project.">
            </command>
         </menu>
      </menuContribution>
   </extension>

属性测试器 XML

  <extension
    point="org.eclipse.core.expressions.propertyTesters">
    <propertyTester
        class="com.company.product.android.core.expressions.ProductProjectTester"
        id="com.company.product.android.core.expressions.productProjectTester"
        namespace="com.company.product.android.core.expressions"
        properties="productProjectProperty"
        type="java.lang.Object">
    </propertyTester>
  </extension>

性能测试仪JAVA

package com.company.product.android.core.expressions;

import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.ISelectionService;
import org.eclipse.ui.PlatformUI;

import com.company.product.android.core.ProjectUtils;

public class ProductProjectTester extends PropertyTester {

    public ProductProjectTester() {
        System.out.println("I AM PRODUCT PROJECT TESTER, AND I HAVE BEEN CREATED");
    }

    @Override
    public boolean test(Object receiver, String property, Object[] args,
            Object expectedValue) {
        //IJavaProject project = null;
        //ISelectionService selectionService = 
        //    PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService();
        //ISelection selection = selectionService.getSelection();
        //boolean enabled = ProjectUtils.isSingleProjectSelected(selection);
        System.out.println("I entered the test method");
        boolean enabled = false;

        System.out.println("The receiver is a " + receiver.getClass().toString());
        IJavaProject project = (IJavaProject)receiver;

        //if (enabled && selection instanceof StructuredSelection) {
            //project = ProjectUtils.getJavaProject();
            if (project != null) {
                enabled = ProjectUtils.hasNeedVersion(project)
                        && (!ProjectUtils.isProductAndroidProject(project.getProject()));

            }
        //}

        return enabled;
    }

}

对于java代码，我尝试了当前的实现以及注释掉的内容。我尝试了很多不同的变体，我在教程中看到这些变体对其他人有效，但对我无效。这些消息永远不会打印到控制台，如果我在构造函数或测试方法中设置断点，它们永远不会被命中。如果其他信息有用，请告诉我...

Answer 1

我在我的项目中使用 PropertyTester，它运行良好

在您的 DEFINITIONS XML 中 您没有正确引用 PropertyTester 定义:

<definition
    id="com.company.product.android.core.expressions.productProject">
    <with variable="selection">
        <iterate ifEmpty="false">
            <test
               property="com.company.product.android.**core**.expressions.productProjectProperty"
                forcePluginActivation="true">
            </test>
        </iterate>
    </with>
</definition>

然后在你的 MENU.XML 中 您应该引用正确的定义(productProject 而不是 androidProjectNature)

    <menu
           icon="icons/wht_ws.gif"
           id="com.company.product.android.core.tools"
           label="Product Tools">

<visibleWhen>
     <with variable="activeMenuSelection">
          <iterate ifEmpty="false">
               <reference
                     definitionId="com.company.product.android.core.expressions.productProject"/>
          </iterate>
     </with>
</visibleWhen>    

        <command
            commandId="com.company.product.android.core.commands.convertToProduct"
            label="Convert to Product Android Project"
            tooltip="The resources, jars and native library to begin developing an product for Android project application will be added to the Android project.">
        </command>
     </menu>

最后，您不需要 HANDLER.XML 中的 EnableWhen 标签

希望这有帮助