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| 1 | <?php |
| 2 | /** |
| 3 | * Abstract Critical CSS provider class. |
| 4 | * |
| 5 | * @package automattic/jetpack-boost |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack_Boost\Lib\Critical_CSS\Source_Providers\Providers; |
| 9 | |
| 10 | /** |
| 11 | * Class Provider |
| 12 | * |
| 13 | * @package Automattic\Jetpack_Boost\Modules\Critical_CSS\Providers |
| 14 | */ |
| 15 | abstract class Provider { |
| 16 | |
| 17 | /** |
| 18 | * The name of the provider. |
| 19 | * |
| 20 | * @since 1.0.0 |
| 21 | * @access protected |
| 22 | * @var string $name The name of the provider |
| 23 | */ |
| 24 | protected static $name; |
| 25 | |
| 26 | /** |
| 27 | * Each provider must return a list of URLs to generate CSS from. |
| 28 | * |
| 29 | * @param \WP_Post[] $context_posts The posts to generate CSS from. |
| 30 | * @return array |
| 31 | */ |
| 32 | abstract public static function get_critical_source_urls( $context_posts = array() ); |
| 33 | |
| 34 | /** |
| 35 | * What key should this provider look for during the current request? |
| 36 | * Used in the front-end to determine where the CSS |
| 37 | * might be stored for the current request. |
| 38 | * |
| 39 | * @return array |
| 40 | */ |
| 41 | abstract public static function get_current_storage_keys(); |
| 42 | |
| 43 | /** |
| 44 | * Returns a list of all keys that this provider can provide, regardless |
| 45 | * of the current URL. |
| 46 | */ |
| 47 | abstract public static function get_keys(); |
| 48 | |
| 49 | /** |
| 50 | * Get a human-displayable string describing the given provider key. |
| 51 | * |
| 52 | * @param string $provider_key the key to describe. |
| 53 | */ |
| 54 | abstract public static function describe_key( $provider_key ); |
| 55 | |
| 56 | /** |
| 57 | * Get the URL of the edit page for the given provider key. |
| 58 | * |
| 59 | * @param string $provider_key the key to edit. |
| 60 | */ |
| 61 | abstract public static function get_edit_url( $provider_key ); |
| 62 | |
| 63 | /** |
| 64 | * Returns true if the key looks like it belongs to this provider. |
| 65 | * |
| 66 | * @param string $key The key. |
| 67 | */ |
| 68 | public static function owns_key( $key ) { |
| 69 | return strncmp( static::$name, $key, strlen( static::$name ) ) === 0; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Get the name of the provider. |
| 74 | * |
| 75 | * @return string |
| 76 | */ |
| 77 | public static function get_provider_name() { |
| 78 | return static::$name; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Returns the ratio of valid urls from the provider source urls |
| 83 | * for the Critical CSS generation to be considered successful. |
| 84 | * |
| 85 | * @return float|int |
| 86 | */ |
| 87 | abstract public static function get_success_ratio(); |
| 88 | } |