Prompt the user to select a link from a list to open.

        Return the link that was selected, or ``None`` if no link was selected.

def prompt_and_select_link(self):
        """
        Prompt the user to select a link from a list to open.

        Return the link that was selected, or ``None`` if no link was selected.
        """
        data = self.get_selected_item()
        url_full = data.get('url_full')
        permalink = data.get('permalink')

        if url_full and url_full != permalink:
            # The item is a link-only submission that won't contain text
            link = url_full
        else:
            html = data.get('html')
            if html:
                extracted_links = self.content.extract_links(html)
                if not extracted_links:
                    # Only one selection to choose from, so just pick it
                    link = permalink
                else:
                    # Let the user decide which link to open
                    links = []
                    if permalink:
                        links += [{'text': 'Permalink', 'href': permalink}]
                    links += extracted_links
                    link = self.term.prompt_user_to_select_link(links)
            else:
                # Some items like hidden comments don't have any HTML to parse
                link = permalink

        return link