Bug 119076 [Markers] ArrayStoreException when multiselection in Problems view includes category
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/ProblemView.java
}
	/**
	 * Get the default priorities for the receiver.
	 * 
	 * @return int []
	 */
	private int[] getDefaultPriorities() {
		return new int[] { SEVERITY, FOLDER, RESOURCE, LOCATION, DESCRIPTION,
				CREATION_TIME, MARKER_ID, };
	}
	/**
	 * Return the width of the category field.
	 * 
	 * @return int
	 */
	private int getCategoryWidth() {
		if (isHierarchalMode())
			return 150;
		return 0;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.views.markers.internal.MarkerView#dispose()
	 */
	public void dispose() {
		if (resolveMarkerAction != null)
			resolveMarkerAction.dispose();
		PlatformUI.getWorkbench().getActivitySupport().getActivityManager()
				.removeActivityManagerListener(activityManagerListener);
		super.dispose();
	}