<?php
/**
 * Infinite Scroll Theme Assets
 *
 * Register support for @Twenty Ten and enqueue relevant styles.
 *
 * @package jetpack
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit( 0 );
}

/**
 * Add theme support for infinity scroll
 */
function jetpack_twentyten_infinite_scroll_init() {
	add_theme_support(
		'infinite-scroll',
		array(
			'container'      => 'content',
			'render'         => 'jetpack_twentyten_infinite_scroll_render',
			'footer'         => 'wrapper',
			'footer_widgets' => jetpack_twentyten_has_footer_widgets(),
		)
	);
}
add_action( 'init', 'jetpack_twentyten_infinite_scroll_init' );

/**
 * Set the code to be rendered on for calling posts,
 * hooked to template parts when possible.
 *
 * Note: must define a loop.
 */
function jetpack_twentyten_infinite_scroll_render() {
	get_template_part( 'loop' );
}

/**
 * Enqueue CSS stylesheet with theme styles for infinity.
 */
function jetpack_twentyten_infinite_scroll_enqueue_styles() {
	if ( wp_script_is( 'the-neverending-homepage' ) ) {
		// Add theme specific styles.
		wp_enqueue_style( 'infinity-twentyten', plugins_url( 'twentyten.css', __FILE__ ), array( 'the-neverending-homepage' ), '20121002' );
	}
}
add_action( 'wp_enqueue_scripts', 'jetpack_twentyten_infinite_scroll_enqueue_styles', 25 );

/**
 * Do we have footer widgets?
 */
function jetpack_twentyten_has_footer_widgets() {
	if ( is_active_sidebar( 'first-footer-widget-area' ) ||
		is_active_sidebar( 'second-footer-widget-area' ) ||
		is_active_sidebar( 'third-footer-widget-area' ) ||
		is_active_sidebar( 'fourth-footer-widget-area' ) ) {

		return true;
	}

	return false;
}