Bug 12101 NewTypeWizardPage.createType crashes in non-ui thread
When performing the IRunnableWithProgress from NewTypeWizardPage.getRunnable, I get the stack-trace shown below. This is caused by a creation of the JavaTextTools object. Currently, my workaround is to call JavaPlugin.getDefault().getJavaTextTools() in the constructor of the class that I derive from NewTypeWizardPage. Stack trace: java/lang/Throwable.<init>()V java/lang/Throwable.<init>(Ljava/lang/String;)V java/lang/NullPointerException.<init>(Ljava/lang/String;)V org/eclipse/jdt/internal/ui/text/JavaColorManager.getColor(Lorg/eclipse/swt/graphics/RGB;)Lorg/eclipse/swt/graphics/Color; org/eclipse/jdt/internal/ui/text/JavaColorManager.getColor(Ljava/lang/String;)Lorg/eclipse/swt/graphics/Color; org/eclipse/jdt/internal/ui/text/AbstractJavaScanner.addToken(Ljava/lang/String;Ljava/lang/String;)V org/eclipse/jdt/internal/ui/text/AbstractJavaScanner.initialize()V org/eclipse/jdt/internal/ui/text/java/JavaCodeScanner.<init>(Lorg/eclipse/jdt/ui/text/IColorManager;Lorg/eclipse/jface/preference/IPreferenceStore;)V org/eclipse/jdt/ui/text/JavaTextTools.<init>(Lorg/eclipse/jface/preference/IPreferenceStore;)V org/eclipse/jdt/internal/ui/JavaPlugin.getJavaTextTools()Lorg/eclipse/jdt/ui/text/JavaTextTools; org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider$BufferFactory.internalCreateDocument(Lorg/eclipse/ui/IFileEditorInput;)Lorg/eclipse/jface/text/IDocument; org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider$BufferFactory.internalGetDocument(Lorg/eclipse/ui/IFileEditorInput;)Lorg/eclipse/jface/text/IDocument; org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider$BufferFactory.createBuffer(Lorg/eclipse/jdt/core/IOpenable;)Lorg/eclipse/jdt/core/IBuffer; org/eclipse/jdt/internal/core/CompilationUnit.getWorkingCopy(Lorg/eclipse/core/runtime/IProgressMonitor;Lorg/eclipse/jdt/core/IBufferFactory;)Lorg/eclipse/jdt/core/IJavaElement; org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.createElementInfo(Ljava/lang/Object;)Lorg/eclipse/ui/texteditor/AbstractDocumentProvider$ElementInfo; org/eclipse/ui/texteditor/AbstractDocumentProvider.connect(Ljava/lang/Object;)V org/eclipse/jdt/internal/corext/textmanipulation/TextBufferFactory.acquire(Lorg/eclipse/core/resources/IFile;)Lorg/eclipse/jdt/internal/corext/textmanipulation/TextBuffer; org/eclipse/jdt/internal/corext/textmanipulation/TextBuffer.acquire(Lorg/eclipse/core/resources/IFile;)Lorg/eclipse/jdt/internal/corext/textmanipulation/TextBuffer; org/eclipse/jdt/internal/corext/codemanipulation/ImportsStructure.aquireTextBuffer()Lorg/eclipse/jdt/internal/corext/textmanipulation/TextBuffer; org/eclipse/jdt/internal/corext/codemanipulation/ImportsStructure.create(ZLorg/eclipse/core/runtime/IProgressMonitor;)V org/eclipse/jdt/ui/wizards/NewTypeWizardPage.createType(Lorg/eclipse/core/runtime/IProgressMonitor;)V org/eclipse/jdt/ui/wizards/NewTypeWizardPage$1.run(Lorg/eclipse/core/runtime/IProgressMonitor;)V com/ibm/ive/jxe/buildfile/RunnableActionExecutor.run(Lorg/eclipse/core/runtime/IProgressMonitor;)V org/eclipse/jface/operation/ModalContext$ModalContextThread.run()V
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
}
			for (int i= 0; i <= last; i++) {
				String typename= (String) interfaces.get(i);
				imports.addImport(typename);
				buf.append(Signature.getSimpleName(typename));
				if (i < last) {
					buf.append(',');
				}
			}
		}
	}
	/*
	 * Called from createType to construct the source for this type
	 */		
	private String constructTypeStub(IImportsStructure imports, String lineDelimiter, ICompilationUnit parentCU) {	
		StringBuffer buf= new StringBuffer();
		String typeComment= getTypeComment(parentCU);
		if (typeComment != null && typeComment.length() > 0) {
			buf.append(typeComment);
			buf.append(lineDelimiter);
		}
		
		int modifiers= getModifiers();
		buf.append(Flags.toString(modifiers));
		if (modifiers != 0) {
			buf.append(' ');
		}
		buf.append(fIsClass ? "class " : "interface "); 
		buf.append(getTypeName());
		writeSuperClass(buf, imports);