infinite-scroll.php
| 1 | <?php |
| 2 | /** |
| 3 | * Theme Tools: Infinite Scroll functions. |
| 4 | * |
| 5 | * @package automattic/jetpack |
| 6 | */ |
| 7 | |
| 8 | /** |
| 9 | * Load theme's infinite scroll annotation file, if present in the IS plugin. |
| 10 | * The `setup_theme` action is used because the annotation files should be using `after_setup_theme` to register support for IS. |
| 11 | * |
| 12 | * As released in Jetpack 2.0, a child theme's parent wasn't checked for in the plugin's bundled support, hence the convoluted way the parent is checked for now. |
| 13 | * |
| 14 | * @uses is_admin, wp_get_theme, apply_filters |
| 15 | * @action setup_theme |
| 16 | * @return null |
| 17 | */ |
| 18 | function jetpack_load_infinite_scroll_annotation() { |
| 19 | if ( is_admin() && isset( $_GET['page'] ) && 'jetpack' === $_GET['page'] ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Function loads theme specific IS file provided by Jetpack if possible. |
| 20 | $theme = wp_get_theme(); |
| 21 | |
| 22 | if ( ! is_a( $theme, 'WP_Theme' ) && ! is_array( $theme ) ) { |
| 23 | return; |
| 24 | } |
| 25 | |
| 26 | /** This filter is already documented in modules/infinite-scroll/infinity.php */ |
| 27 | $customization_file = apply_filters( 'infinite_scroll_customization_file', __DIR__ . "/infinite-scroll/themes/{$theme['Stylesheet']}.php", $theme['Stylesheet'] ); |
| 28 | |
| 29 | if ( is_readable( $customization_file ) ) { |
| 30 | require_once $customization_file; |
| 31 | } elseif ( ! empty( $theme['Template'] ) ) { |
| 32 | $customization_file = __DIR__ . "/infinite-scroll/themes/{$theme['Template']}.php"; |
| 33 | |
| 34 | if ( is_readable( $customization_file ) ) { |
| 35 | require_once $customization_file; |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | } |
| 40 | add_action( 'setup_theme', 'jetpack_load_infinite_scroll_annotation' ); |
| 41 | |
| 42 | /** |
| 43 | * Prevent IS from being activated if theme doesn't support it |
| 44 | * |
| 45 | * @filter jetpack_can_activate_infinite-scroll |
| 46 | * @return bool |
| 47 | */ |
| 48 | function jetpack_can_activate_infinite_scroll() { |
| 49 | return (bool) current_theme_supports( 'infinite-scroll' ); |
| 50 | } |
| 51 | add_filter( 'jetpack_can_activate_infinite-scroll', 'jetpack_can_activate_infinite_scroll' ); |
| 52 |