public function widget( $args, $instance ) {
		if ( empty( $instance['cb_display'] ) || ! is_array( $instance['cb_display'] ) ) {
			return;
		}

		// before and after widget arguments are defined by themes.
		echo wp_kses_post( $args['before_widget'] );

		$title = apply_filters( 'widget_title', $instance['title'] );
		if ( ! empty( $title ) ) {
			echo wp_kses_post( $args['before_title'] ) . esc_html( $title ) . wp_kses_post( $args['after_title'] );
		}

		$format_slugs = array_keys( $this->formats() );
		$format       = in_array( $instance['format'], $format_slugs ) ? $instance['format'] : $format_slugs[0];

		printf(
			'<div class="invp-%s">%s',
			esc_attr( $format ),
			$this->formats()[ $format ]['before']
		);

		// loop through each location.
		$location_info = get_terms(
			array(
				'taxonomy'   => 'location',
				'fields'     => 'id=>name',
				'hide_empty' => false,
			)
		);
		foreach ( $location_info as $term_id => $name ) {
			// Does this address even have a phone number displayed by this instance of this widget?
			if ( empty( $instance['cb_display'][ $term_id ] ) ) {
				// No.
				continue;
			}

			for ( $p = 1; $p <= INVP::LOCATION_MAX_PHONES; $p++ ) {
				$phone_uid = get_term_meta( $term_id, 'phone_' . $p . '_uid', true );
				if ( ! $phone_uid ) {
					break;
				}

				// There is a phone number is slot $p, has the user configured this widget to display it?
				if ( in_array( $phone_uid, $instance['cb_display'][ $term_id ], true ) ) {
					// Yes, output this number.
					$number      = get_term_meta( $term_id, 'phone_' . $p . '_number', true );
					$html        = '';
					$description = '';
					if ( $this->formats()[ $format ]['uses_labels'] ) {
						$description = get_term_meta( $term_id, 'phone_' . $p . '_description', true );
						$html .= sprintf( $this->formats()[ $format ]['repeater'], esc_html( $description ), INVP::prepare_phone_number_for_link( $number ), esc_html( $number ) );
					} else {
						$html .= sprintf( $this->formats()[ $format ]['repeater'], INVP::prepare_phone_number_for_link( $number ), esc_html( $number ) );
					}

					echo wp_kses_post( apply_filters( 'invp_phone_number_widget_html', $html, $term_id, $phone_uid, $number, $description, $this->formats()[ $format ] ) );
				}
			}
		}

		echo $this->formats()[ $format ]['after']
		. '</div>'
		. wp_kses_post( $args['after_widget'] );
	}