Noptin_Abstract_Integration::get_checkbox_markup( array $html_attrs = array() )

	function get_checkbox_markup( array $html_attrs = array() ) {

		// Abort if we're not displaying a checkbox.
		if ( ! $this->can_show_checkbox() ) {
			return '';
		}

		ob_start();

		// Checkbox opening wrapper.
		echo '<!-- Noptin Newsletters - https://noptin.com/ -->';
		do_action( 'noptin_integration_before_subscription_checkbox_wrapper', $this );
		do_action( 'noptin_integration_' . $this->slug . '_before_subscription_checkbox_wrapper', $this );

		// Prepare the label attributes.
		$html_attrs['class'] = empty( $html_attrs['class'] ) ? '' : $html_attrs['class'];
		$html_attrs['class'] = $html_attrs['class'] . sprintf( ' noptin-integration-subscription-checkbox noptin-integration-subscription-checkbox-%s', $this->slug );


		// Convert them to strings.
		$html_attr_str = '';
		foreach ( $html_attrs as $key => $value ) {
			$html_attr_str .= sprintf( '%s="%s" ', $key, esc_attr( $value ) );
		}

		// usefull when wrapping the checkbox in an element.
		$this->before_checkbox_wrapper();

		echo "<label $html_attr_str>";
		echo sprintf( '<input %s />', $this->get_checkbox_attributes() );
		echo sprintf( '<span>%s</span>', $this->get_label_text() );
		echo '</label>';

		// usefull when wrapping the checkbox in an element.
		$this->after_checkbox_wrapper();

		// Checkbox closing wrapper.
		do_action( 'noptin_integration_after_subscription_checkbox_wrapper', $this );
		do_action( 'noptin_integration_' . $this->slug . '_after_subscription_checkbox_wrapper', $this );
		echo '<!-- / Noptin Newsletters -->';

		return ob_get_clean();

	}