NPE in theme preferences

[svenefftinge]

When trying to add another theme:

java.lang.NullPointerException
at org.eclipse.tm4e.ui.internal.preferences.ThemePreferencePage$1.selectionChanged(ThemePreferencePage.java:217)
at org.eclipse.jface.viewers.Viewer$1.run(Viewer.java:155)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:44)
at org.eclipse.ui.internal.JFaceUtil$$Lambda$8/1294605731.run(Unknown Source)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:152)
at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2180)
at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1223)
at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1252)
at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:240)
at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:235)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:400)

[angelozerr]

I don't understand how you can have this error? Today you cannot add new theme. The "New" button should be disabled.

Today tm4e uses CSS to defines themes, but I would like to use TextMate theme (see #2). I have started to develop a TextMate theme parser (like VSCode) but now I must support tokenizeLine2 (like VSCode) (see #38)

It's a big work, I must find time to do that -(

[angelozerr]

@svenefftinge could you tell me please how you can have this error please. Thanks!

[svenefftinge]

AFAIR, I simply opened the preferences and tried to change them.

[mickaelistria]

I'm closing as cannot reproduce.
If you can reproduce it with latest snapshots, feel free to reopen with more details.