CustomField Type Disabling Column View

When creating a customfield-type module I can set the velocity template for column-view to an empty template, but is there any way to prevent the field from being selected?

~~Only fields implementing NavigableField are able to be selected in the Issue Navigator:

com.atlassian.jira.issue.fields.CustomField implements NavigableField so I can’t really un-implement it. I don’t even know if there is a way to override the CustomField implementation. The module implements com.atlassian.jira.issue.customfields.CustomFieldType

Yep, sorry, naive answer. Adding a customfield implementation that did not include navigable would be difficult and a much larger job.

I don’t believe it’s possible to prevent a field from being selected in the navigator if it is in context.

In com.atlassian.jira.gadgets.system.AvailableColumnsResource in getFields() I see

if (field instanceof CustomField) {
    final CustomField customField = (CustomField) field;
        if (!customField.getCustomFieldType().getDescriptor().isViewTemplateExists() &&
            !customField.getCustomFieldType().getDescriptor().isColumnViewTemplateExists()) {

now I’ve got a view template, so my fields are still being selected but I wonder if I can implement a custom descriptor which return false for isViewTemplateExists() but still returns html for getViewHtml