Eclipse GEF - 无法使用 javafx 控件中的类

问题描述 投票：0回答：1

我正在开发一个使用 Eclipse GEF 5（更准确地说是版本 5.0.5）的应用程序。

现在我想做一些与 mvc 徽标示例非常相似的事情。我现在关注的部分是调色板。

我对调色板隐藏感到不舒服，只能在鼠标光标位于小线上方时可见，因此将其更改为始终在左侧可见。

事实上，GEF 3 (GraphicalEditorWithPalette) 的可用功能对于我的用例来说几乎是完美的。

因此我尝试向 PaletteRootPart 添加一个 JavaFX Accordion。 使用 VBoxes 等（来自 javafx.graphics.jar 工作顺利），但不能使用 Accordion（来自 javafx.controls.jar）。 如果我在编译时添加 Accordion，则不会出现编译错误 - 因此 Accordion 是可解析的（至少在 P2 构建中）。 问题是在运行时，一旦编辑器启动

org.eclipse.e4.core.di.InjectionException
：

java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.Accordion
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:396)

抛出异常。完整的堆栈跟踪在这个问题的末尾。

在添加手风琴之前它工作得很好。因此我认为我的总体设置至少还不错:-)

我很好奇 GEF 徽标示例的行为是否与我的应用程序相同。 情况就是如此。 设置 GEF 开发环境（根据 GitHub 上的 GEF Wiki）并启动 GEF MVC 徽标示例非常有效。但一旦我插入

Accordion accordion = new Accordion();

在 

PaletteRootPart
createContentLayer()
方法中，它在运行时抱怨相同的异常。

说实话我真的不知道从哪里开始调试或解决这个问题。因此，如果需要更多信息，请随时询问。

我的问题是：

  1. 是否有可能做我想做的事情，或者这是一种无用的方法？如果是这样，如何解决上述异常？

  2. 是否有可能在 SWT 代码中实现调色板并将其以某种方式链接到编辑器的 JavaFX 部分？

非常感谢您提前提供的任何帮助！

异常的完整堆栈跟踪：

!ENTRY org.eclipse.e4.ui.workbench 4 0 2024-01-10 13:03:34.710
!MESSAGE Unable to create class 'org.eclipse.ui.internal.e4.compatibility.CompatibilityView' from bundle '399'
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.Accordion
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:396)
    at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:311)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:203)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:91)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:60)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:42)
    at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:132)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:992)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:659)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.run(PartRenderingEngine.java:544)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:528)
    at org.eclipse.e4.ui.workbench.renderers.swt.ElementReferenceRenderer.createWidget(ElementReferenceRenderer.java:73)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:992)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:659)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1379)
    at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java:114)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:677)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
    at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:147)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
    at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:147)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
    at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveRenderer.processContents(PerspectiveRenderer.java:48)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveStackRenderer.showTab(PerspectiveStackRenderer.java:79)
    at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java:114)
    at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveStackRenderer.postProcess(PerspectiveStackRenderer.java:61)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:677)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
    at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:147)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
    at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.processContents(WBWRenderer.java:660)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1080)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1043)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:152)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:648)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1459)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1432)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.Accordion
    at org.eclipse.gef.mvc.examples.logo.parts.PaletteRootPart.createContentLayer(PaletteRootPart.java:40)
    at org.eclipse.gef.mvc.fx.parts.LayeredRootPart.doCreateVisual(LayeredRootPart.java:190)
    at org.eclipse.gef.mvc.fx.parts.LayeredRootPart.doCreateVisual(LayeredRootPart.java:1)
    at org.eclipse.gef.mvc.fx.parts.AbstractVisualPart.getVisual(AbstractVisualPart.java:626)
    at org.eclipse.gef.mvc.fx.parts.AbstractVisualPart.unregister(AbstractVisualPart.java:848)
    at org.eclipse.gef.mvc.fx.parts.AbstractVisualPart.setAdaptable(AbstractVisualPart.java:764)
    at org.eclipse.gef.mvc.fx.parts.AbstractVisualPart.setAdaptable(AbstractVisualPart.java:1)
    at org.eclipse.gef.common.adapt.AdaptableSupport.dispose(AdaptableSupport.java:103)
    at org.eclipse.gef.mvc.fx.viewer.InfiniteCanvasViewer.dispose(InfiniteCanvasViewer.java:250)
    at org.eclipse.gef.common.adapt.AdaptableSupport.dispose(AdaptableSupport.java:109)
    at org.eclipse.gef.mvc.fx.domain.HistoricizingDomain.dispose(HistoricizingDomain.java:246)
    at org.eclipse.gef.mvc.fx.ui.parts.AbstractFXView.dispose(AbstractFXView.java:201)
    at org.eclipse.gef.mvc.examples.logo.ui.view.MvcLogoExampleView.dispose(MvcLogoExampleView.java:133)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:165)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.createPartControl(CompatibilityView.java:155)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:365)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:976)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:938)
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(InjectorImpl.java:138)
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:385)
    ... 90 more
eclipse javafx eclipse-gef
1个回答
0
投票

我至少找到了 GEF 这样做的原因： Accordion 需要一个设置 JavaFX Toolkit，但在创建 PaletteRootPart 时情况并非如此。JafaFX Toolkit 初始化恰好在 MvcFxUiModule 中稍后的时间点执行。

不幸的是，有关未初始化 Toolkit 的抛出异常被 org.eclipse.gef.common.adapt.inject.AdapterInjector 的行为掩盖了。抛出的异常被捕获并转换为内部对象。用户就会丢失该信息。

我花了很多时间来调试并达到这一点。

解决方案需要对 GEF 的行为进行进一步调查。 如果我在调色板根部分触发 JavaFX 工具包的启动，则 MvcFxUiModule 中的 FXCanvas 实例化将抛出工具包已初始化的异常。一旦找到解决方案/解决方法，我会立即更新。

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