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WindowBuilder empty palette Java 17 installed in RCP #134
Description
I still get an empty palette with Java 17 when I install the latest WindowBuilder plugin in my RCP application with the p2 Update Manager. In Eclipse however it seems to work. The following error is thrown when I open and click on the design tab:
java.lang.NullPointerException: Cannot invoke "org.eclipse.wb.core.model.ObjectInfo.getBroadcastObject()" because "this.this$0.m_rootObject" is null
at org.eclipse.wb.internal.core.editor.structure.components.ComponentsTreePage$5.run(ComponentsTreePage.java:157)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runLog(ExecutionUtils.java:106)
at org.eclipse.wb.internal.core.editor.structure.components.ComponentsTreePage.selectGraphicalViewer(ComponentsTreePage.java:148)
at org.eclipse.wb.internal.core.editor.structure.components.ComponentsTreePage$1.selectionChanged(ComponentsTreePage.java:119)
at org.eclipse.wb.internal.gef.core.AbstractEditPartViewer.fireSelectionChanged(AbstractEditPartViewer.java:202)
at org.eclipse.wb.internal.gef.core.AbstractEditPartViewer.deselectAll(AbstractEditPartViewer.java:325)
at org.eclipse.wb.gef.graphical.tools.SelectionTool.handleButtonDown(SelectionTool.java:139)
at org.eclipse.wb.gef.core.tools.Tool.mouseDown(Tool.java:385)
at org.eclipse.wb.gef.graphical.tools.SelectionTool.mouseDown(SelectionTool.java:238)
at org.eclipse.wb.internal.gef.core.EditDomain.mouseDown(EditDomain.java:244)
at org.eclipse.wb.internal.gef.tree.TreeEventManager.mouseDown(TreeEventManager.java:114)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.eclipse.wb.internal.draw2d.EventManager$1.invoke(EventManager.java:317)
at jdk.proxy9/jdk.proxy9.$Proxy23.mouseDown(Unknown Source)
With Java <16 there was no problem. I also tried a fresh installation with the latest built to no avail.
I can reproduce this error on MacOSX and Windows using
Eclipse Adoptium, java.version: 17.0.1
WindowBuilder version: 1.9.7.202112211354
Activity
lcaron commentedon Jan 9, 2022
Hi,
Sorry for that bug... Can you post the whole stacktrace ?
Can you also check if the plugin org.eclipse.wb.core is started ?
Bio7 commentedon Jan 10, 2022
Hello,
thanks for the fast reply.
Here the About->Installation Details->Configuration:
Complete exception:
lcaron commentedon Jan 11, 2022
In your list of plugins, you have 2 families :
Can you please clean/update your configuration in order to use only the latest release of WB ?
Bio7 commentedon Jan 11, 2022
I once again cleaned up with the latest built (somehow I reverted the installation to test older versions)
However the same error occurs: design tab stays empty, on-click the error message is printed -
in additon in the console I get a "BurningShell" log message with ASCII Art.
In my configuration I open the following relevant modules in the *.ini file:
Here the updated configuration:
lcaron commentedon Jan 11, 2022
Ok thank you for your feed back.
I'm a bit puzzled by this bug. If you remove the options
--add-optionsis it better ?Bio7 commentedon Jan 11, 2022
No, that doesn't makes a difference. I think the bug is quite similar to the reflection bug for Java 16 which was cured for Eclipse with the workaround.
#45
However this also didn't work for an RCP application.
The last running version was with Java 15.
Unfortunately I don't get an informative error message why the design tab is empty.