IContributionItem 中的工具栏

Question

我有以下 sn-p 可以工作并创建一个ToolBar，其中的项目取自 plugin.xml 内的 URI：

IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
IMenuService menuService = window.getService(IMenuService.class);
ToolBarManager manager = new ToolBarManager(new ToolBar(body, SWT.BORDER));
menuService.populateContributionManager(manager, "toolbar:org.eclipse.ui.main.ribbon");
manager.update(true);

我将 sn-p 放在 IContributionItem 中，它停止工作。有一个例外：

org.eclipse.e4.core.di.InjectionException: org.eclipse.swt.SWTException: Widget is disposed
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:68)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:898)
    at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:121)
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:345)
    at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:278)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:186)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:107)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:50)
    at org.eclipse.e4.ui.workbench.renderers.swt.ToolControlContribution.createControl(ToolControlContribution.java:58)
    at org.eclipse.jface.action.ControlContribution.fill(ControlContribution.java:101)
    at org.eclipse.jface.action.ToolBarManager.update(ToolBarManager.java:343)
    at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.subscribeTopicUpdateToBeRendered(ToolBarManagerRenderer.java:212)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
Caused by: org.eclipse.swt.SWTException: Widget is disposed
    at org.eclipse.swt.SWT.error(SWT.java:4491)
    at org.eclipse.swt.SWT.error(SWT.java:4406)
    at org.eclipse.swt.SWT.error(SWT.java:4377)
    at org.eclipse.swt.widgets.Widget.error(Widget.java:482)
    at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:354)
    at org.eclipse.swt.widgets.Widget.addDisposeListener(Widget.java:224)
    at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.addCleanupDisposeListener(ToolBarManagerRenderer.java:420)
    at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.processContribution(ToolBarManagerRenderer.java:406)
    at org.eclipse.ui.internal.menus.WorkbenchMenuService.populateContributionManager(WorkbenchMenuService.java:342)
    at org.eclipse.ui.internal.menus.SlaveMenuService.populateContributionManager(SlaveMenuService.java:90)
    at org.eclipse.ui.internal.menus.SlaveMenuService.populateContributionManager(SlaveMenuService.java:81)
    at org.acme.project.RibbonContribution.createControl(RibbonContribution.java:29)

据我所知，没有释放任何控件（为什么要释放？在应用程序启动时抛出异常）。

控制台还显示以下消息：

!MESSAGE 无法从包“87”创建类“org.eclipse.ui.internal.menus.CompatibilityWorkbenchWindowControlContribution”

!MESSAGE 异常同时调度事件 org.osgi.service.event.Event [topic=org/eclipse/e4/ui/model/ui/UIElement/visible/SET] {ChangedElement=org.eclipse.e4.ui. model.application.ui.menu.impl.ToolControlImpl@b606cb6（elementId：org.eclipse.core.internal.registry.ConfigurationElementHandle@3f，标签：null，contributorURI：null）（小部件：null，渲染器：org.eclipse.e4 .ui.workbench.renderers.swt.ToolControlRenderer@5b9396d3, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null) (contributionURI: bundleclass://org.eclipse.ui.workbench/org. eclipse.ui.internal.menus.CompatibilityWorkbenchWindowControlContribution, object: null), Widget=null, AttName=visible, NewValue=true, EventType=SET, OldValue=false} 到处理程序 org.eclipse.e4.ui.internal.di.UIEventObjectSupplier $UIEventHandler@24c8d8be

发生了什么事？我该如何解决？如何将ToolBar 添加到IContributionItem？

Answer 1

我在NPE in HandledContributionItem.canExecuteItem回答了这个问题

WorkbenchMenuService.populateContributionManager(ContributionManager, String) 使用当前活动的工作台部件来注册菜单。所以在这个例子中，工具栏没有要创建的活动部分。

我找到了一种解决方法来修复这个巨大的 E4 错误。对populateContributionManager 的调用必须替换为以下行：

    final MPart part = getSite().getService(MPart.class);
    String menuLocation = "toolbar:org.acme.menu";

    if (menuService instanceof WorkbenchMenuService) {
        ((WorkbenchMenuService) menuService).populateContributionManager(part, manager, menuLocation);
    } else if (menuService instanceof SlaveMenuService) {
        ((SlaveMenuService) menuService).populateContributionManager(part, manager, menuLocation);
    } else
        throw new UnsupportedOperationException("Do not know how to handle " + menuService); //$NON-NLS-1$