Automattic /
jetpack
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Publicize_Base often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Publicize_Base, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 3 | abstract class Publicize_Base { |
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| 4 | |||
| 5 | /** |
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| 6 | * Services that are currently connected to the given user |
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| 7 | * through publicize. |
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| 8 | */ |
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| 9 | public $connected_services = array(); |
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| 10 | |||
| 11 | /** |
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| 12 | * Services that are supported by publicize. They don't |
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| 13 | * necessarily need to be connected to the current user. |
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| 14 | */ |
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| 15 | public $services; |
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| 16 | |||
| 17 | /** |
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| 18 | * key names for post meta |
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| 19 | */ |
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| 20 | public $ADMIN_PAGE = 'wpas'; |
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| 21 | public $POST_MESS = '_wpas_mess'; |
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| 22 | public $POST_SKIP = '_wpas_skip_'; // connection id appended to indicate that a connection should NOT be publicized to |
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| 23 | public $POST_DONE = '_wpas_done_'; // connection id appended to indicate a connection has already been publicized to |
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| 24 | public $USER_AUTH = 'wpas_authorize'; |
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| 25 | public $USER_OPT = 'wpas_'; |
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| 26 | public $PENDING = '_publicize_pending'; // ready for Publicize to do its thing |
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| 27 | public $POST_SERVICE_DONE = '_publicize_done_external'; // array of external ids where we've Publicized |
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| 28 | |||
| 29 | /** |
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| 30 | * default pieces of the message used in constructing the |
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| 31 | * content pushed out to other social networks |
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| 32 | */ |
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| 33 | |||
| 34 | public $default_prefix = ''; |
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| 35 | public $default_message = '%title%'; |
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| 36 | public $default_suffix = ' '; |
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| 37 | |||
| 38 | /** |
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| 39 | * What WP capability is require to create/delete global connections? |
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| 40 | * All users with this cap can un-globalize all other global connections, and globalize any of their own |
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| 41 | * Globalized connections cannot be unselected by users without this capability when publishing |
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| 42 | */ |
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| 43 | public $GLOBAL_CAP = 'edit_others_posts'; |
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| 44 | |||
| 45 | /** |
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| 46 | * Sets up the basics of Publicize |
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| 47 | */ |
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| 48 | function __construct() { |
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| 49 | $this->default_message = self::build_sprintf( array( |
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| 50 | /** |
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| 51 | * Filter the default Publicize message. |
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| 52 | * |
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| 53 | * @module publicize |
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| 54 | * |
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| 55 | * @since 2.0.0 |
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| 56 | * |
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| 57 | * @param string $this->default_message Publicize's default message. Default is the post title. |
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| 58 | */ |
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| 59 | apply_filters( 'wpas_default_message', $this->default_message ), |
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| 60 | 'title', |
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| 61 | 'url', |
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| 62 | ) ); |
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| 63 | |||
| 64 | $this->default_prefix = self::build_sprintf( array( |
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| 65 | /** |
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| 66 | * Filter the message prepended to the Publicize custom message. |
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| 67 | * |
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| 68 | * @module publicize |
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| 69 | * |
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| 70 | * @since 2.0.0 |
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| 71 | * |
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| 72 | * @param string $this->default_prefix String prepended to the Publicize custom message. |
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| 73 | */ |
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| 74 | apply_filters( 'wpas_default_prefix', $this->default_prefix ), |
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| 75 | 'url', |
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| 76 | ) ); |
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| 77 | |||
| 78 | $this->default_suffix = self::build_sprintf( array( |
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| 79 | /** |
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| 80 | * Filter the message appended to the Publicize custom message. |
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| 81 | * |
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| 82 | * @module publicize |
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| 83 | * |
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| 84 | * @since 2.0.0 |
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| 85 | * |
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| 86 | * @param string $this->default_suffix String appended to the Publicize custom message. |
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| 87 | */ |
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| 88 | apply_filters( 'wpas_default_suffix', $this->default_suffix ), |
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| 89 | 'url', |
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| 90 | ) ); |
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| 91 | |||
| 92 | /** |
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| 93 | * Filter the capability to change global Publicize connection options. |
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| 94 | * |
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| 95 | * All users with this cap can un-globalize all other global connections, and globalize any of their own |
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| 96 | * Globalized connections cannot be unselected by users without this capability when publishing. |
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| 97 | * |
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| 98 | * @module publicize |
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| 99 | * |
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| 100 | * @since 2.2.1 |
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| 101 | * |
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| 102 | * @param string $this->GLOBAL_CAP default capability in control of global Publicize connection options. Default to edit_others_posts. |
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| 103 | */ |
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| 104 | $this->GLOBAL_CAP = apply_filters( 'jetpack_publicize_global_connections_cap', $this->GLOBAL_CAP ); |
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| 105 | |||
| 106 | // stage 1 and 2 of 3-stage Publicize. Flag for Publicize on creation, save meta, |
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| 107 | // then check meta and publicize based on that. stage 3 implemented on wpcom |
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| 108 | add_action( 'transition_post_status', array( $this, 'flag_post_for_publicize' ), 10, 3 ); |
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| 109 | add_action( 'save_post', array( &$this, 'save_meta' ), 20, 2 ); |
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| 110 | |||
| 111 | // Default checkbox state for each Connection |
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| 112 | add_filter( 'publicize_checkbox_default', array( $this, 'publicize_checkbox_default' ), 10, 4 ); |
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| 113 | |||
| 114 | // Alter the "Post Publish" admin notice to mention the Connections we Publicized to. |
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| 115 | add_filter( 'post_updated_messages', array( $this, 'update_published_message' ), 20, 1 ); |
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| 116 | |||
| 117 | // Connection test callback |
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| 118 | add_action( 'wp_ajax_test_publicize_conns', array( $this, 'test_publicize_conns' ) ); |
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| 119 | } |
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| 120 | |||
| 121 | /* |
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| 122 | * Services: Facebook, Twitter, etc. |
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| 123 | */ |
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| 124 | |||
| 125 | /** |
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| 126 | * Get services for the given blog and user. |
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| 127 | * |
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| 128 | * Can return all available services or just the ones with an active connection. |
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| 129 | * |
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| 130 | * @param string $filter |
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| 131 | * 'all' (default) - Get all services available for connecting |
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| 132 | * 'connected' - Get all services currently connected |
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| 133 | * @param false|int $_blog_id The blog ID. Use false (default) for the current blog |
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| 134 | * @param false|int $_user_id The user ID. Use false (default) for the current user |
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| 135 | * @return array |
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| 136 | */ |
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| 137 | abstract function get_services( $filter = 'all', $_blog_id = false, $_user_id = false ); |
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| 138 | |||
| 139 | /** |
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| 140 | * Does the given user have a connection to the service on the given blog? |
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| 141 | * |
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| 142 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 143 | * @param false|int $_blog_id The blog ID. Use false (default) for the current blog |
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| 144 | * @param false|int $_user_id The user ID. Use false (default) for the current user |
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| 145 | * @return bool |
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| 146 | */ |
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| 147 | function is_enabled( $service_name, $_blog_id = false, $_user_id = false ) { |
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| 148 | if ( !$_blog_id ) |
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| 149 | $_blog_id = $this->blog_id(); |
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| 150 | |||
| 151 | if ( !$_user_id ) |
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| 152 | $_user_id = $this->user_id(); |
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| 153 | |||
| 154 | $connections = $this->get_connections( $service_name, $_blog_id, $_user_id ); |
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| 155 | return ( is_array( $connections ) && count( $connections ) > 0 ? true : false ); |
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| 156 | } |
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| 157 | |||
| 158 | /** |
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| 159 | * Generates a connection URL. |
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| 160 | * |
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| 161 | * This is the URL, which, when visited by the user, starts the authentication |
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| 162 | * process required to forge a connection. |
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| 163 | * |
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| 164 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 165 | * @return string |
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| 166 | */ |
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| 167 | abstract function connect_url( $service_name ); |
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| 168 | |||
| 169 | /** |
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| 170 | * Generates a Connection refresh URL. |
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| 171 | * |
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| 172 | * This is the URL, which, when visited by the user, re-authenticates their |
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| 173 | * connection to the service. |
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| 174 | * |
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| 175 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 176 | * @return string |
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| 177 | */ |
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| 178 | abstract function refresh_url( $service_name ); |
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| 179 | |||
| 180 | /** |
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| 181 | * Generates a disconnection URL. |
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| 182 | * |
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| 183 | * This is the URL, which, when visited by the user, breaks their connection |
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| 184 | * with the service. |
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| 185 | * |
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| 186 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 187 | * @param string $connection_id Connection ID |
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| 188 | * @return string |
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| 189 | */ |
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| 190 | abstract function disconnect_url( $service_name, $connection_id ); |
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| 191 | |||
| 192 | /** |
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| 193 | * Returns a display name for the Service |
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| 194 | * |
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| 195 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 196 | * @return string |
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| 197 | */ |
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| 198 | public static function get_service_label( $service_name ) { |
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| 214 | |||
| 215 | /* |
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| 216 | * Connections: For each Service, there can be multiple connections |
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| 217 | * for a given user. For example, one user could be connected to Twitter |
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| 218 | * as both @jetpack and as @wordpressdotcom |
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| 219 | * |
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| 220 | * For historical reasons, Connections are represented as an object |
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| 221 | * on WordPress.com and as an array in Jetpack. |
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| 222 | */ |
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| 223 | |||
| 224 | /** |
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| 225 | * Get the active Connections of a Service |
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| 226 | * |
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| 227 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 228 | * @param false|int $_blog_id The blog ID. Use false (default) for the current blog |
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| 229 | * @param false|int $_user_id The user ID. Use false (default) for the current user |
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| 230 | * @return false|object[]|array[] false if no connections exist |
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| 231 | */ |
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| 232 | abstract function get_connections( $service_name, $_blog_id = false, $_user_id = false ); |
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| 233 | |||
| 234 | /** |
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| 235 | * Get a single Connection of a Service |
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| 236 | * |
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| 237 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 238 | * @param string $connection_id Connection ID |
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| 239 | * @param false|int $_blog_id The blog ID. Use false (default) for the current blog |
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| 240 | * @param false|int $_user_id The user ID. Use false (default) for the current user |
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| 241 | * @return false|object[]|array[] false if no connections exist |
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| 242 | */ |
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| 243 | abstract function get_connection( $service_name, $connection_id, $_blog_id = false, $_user_id = false ); |
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| 244 | |||
| 245 | /** |
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| 246 | * Get the Connection ID. |
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| 247 | * |
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| 248 | * Note that this is different than the Connection's uniqueid. |
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| 249 | * |
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| 250 | * Via a quirk of history, ID is globally unique and unique_id |
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| 251 | * is only unique per site. |
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| 252 | * |
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| 253 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 254 | * @return string |
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| 255 | */ |
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| 256 | abstract function get_connection_id( $connection ); |
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| 257 | |||
| 258 | /** |
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| 259 | * Get the Connection unique_id |
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| 260 | * |
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| 261 | * Note that this is different than the Connections ID. |
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| 262 | * |
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| 263 | * Via a quirk of history, ID is globally unique and unique_id |
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| 264 | * is only unique per site. |
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| 265 | * |
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| 266 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 267 | * @return string |
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| 268 | */ |
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| 269 | abstract function get_connection_unique_id( $connection ); |
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| 270 | |||
| 271 | /** |
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| 272 | * Get the Connection's Meta data |
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| 273 | * |
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| 274 | * @param object|array Connection |
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| 275 | * @return array Connection Meta |
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| 276 | */ |
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| 277 | abstract function get_connection_meta( $connection ); |
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| 278 | |||
| 279 | /** |
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| 280 | * Disconnect a Connection |
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| 281 | * |
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| 282 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 283 | * @param string $connection_id Connection ID |
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| 284 | * @param false|int $_blog_id The blog ID. Use false (default) for the current blog |
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| 285 | * @param false|int $_user_id The user ID. Use false (default) for the current user |
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| 286 | * @param bool $force_delete Whether to skip permissions checks |
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| 287 | * @return false|void False on failure. Void on success. |
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| 288 | */ |
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| 289 | abstract function disconnect( $service_name, $connection_id, $_blog_id = false, $_user_id = false, $force_delete = false ); |
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| 290 | |||
| 291 | /** |
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| 292 | * Globalizes a Connection |
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| 293 | * |
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| 294 | * @param string $connection_id Connection ID |
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| 295 | * @return bool Falsey on failure. Truthy on success. |
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| 296 | */ |
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| 297 | abstract function globalize_connection( $connection_id ); |
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| 298 | |||
| 299 | /** |
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| 300 | * Unglobalizes a Connection |
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| 301 | * |
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| 302 | * @param string $connection_id Connection ID |
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| 303 | * @return bool Falsey on failure. Truthy on success. |
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| 304 | */ |
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| 305 | abstract function unglobalize_connection( $connection_id ); |
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| 306 | |||
| 307 | /** |
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| 308 | * Returns an external URL to the Connection's profile |
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| 309 | * |
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| 310 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 311 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 312 | * @return false|string False on failure. URL on success. |
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| 313 | */ |
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| 314 | function get_profile_link( $service_name, $connection ) { |
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| 354 | |||
| 355 | /** |
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| 356 | * Returns a display name for the Connection |
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| 357 | * |
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| 358 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 359 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 360 | * @return string |
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| 361 | */ |
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| 362 | function get_display_name( $service_name, $connection ) { |
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| 378 | |||
| 379 | /** |
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| 380 | * Whether the user needs to select additional options after connecting |
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| 381 | * |
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| 382 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 383 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 384 | * @return bool |
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| 385 | */ |
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| 386 | function show_options_popup( $service_name, $connection ) { |
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| 409 | |||
| 410 | /** |
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| 411 | * Whether the Connection is "valid" wrt Facebook's requirements. |
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| 412 | * |
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| 413 | * Must be connected to a Page (not a Profile). |
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| 414 | * (Also returns true if we're in the middle of the connection process) |
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| 415 | * |
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| 416 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 417 | * @return bool |
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| 418 | */ |
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| 419 | function is_valid_facebook_connection( $connection ) { |
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| 427 | |||
| 428 | /** |
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| 429 | * Whether the Connection currently being connected |
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| 430 | * |
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| 431 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 432 | * @return bool |
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| 433 | */ |
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| 434 | function is_connecting_connection( $connection ) { |
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| 439 | |||
| 440 | /** |
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| 441 | * AJAX Handler to run connection tests on all Connections |
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| 442 | * @return void |
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| 443 | */ |
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| 444 | function test_publicize_conns() { |
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| 503 | |||
| 504 | /** |
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| 505 | * Run the connection test for the Connection |
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| 506 | * |
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| 507 | * @param string $service_name 'facebook', 'twitter', etc. |
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| 508 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 509 | * @return WP_Error|true WP_Error on failure. True on success |
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| 510 | */ |
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| 511 | abstract function test_connection( $service_name, $connection ); |
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| 512 | |||
| 513 | /** |
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| 514 | * Retrieves current list of connections and applies filters. |
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| 515 | * |
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| 516 | * Retrieves current available connections and checks if the connections |
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| 517 | * have already been used to share current post. Finally, the checkbox |
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| 518 | * form UI fields are calculated. This function exposes connection form |
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| 519 | * data directly as array so it can be retrieved for static HTML generation |
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| 520 | * or JSON consumption. |
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| 521 | * |
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| 522 | * @since 6.7.0 |
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| 523 | * |
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| 524 | * @param integer $selected_post_id Optional. Post ID to query connection status for. |
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| 525 | * |
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| 526 | * @return array { |
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| 527 | * Array of UI setup data for connection list form. |
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| 528 | * |
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| 529 | * @type string 'unique_id' ID string representing connection |
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| 530 | * @type string 'service_name' Slug of the connection's service (facebook, twitter, ...) |
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| 531 | * @type string 'service_label' Service Label (Facebook, Twitter, ...) |
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| 532 | * @type string 'display_name' Connection's human-readable Username: "@jetpack" |
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| 533 | * @type bool 'enabled' Default value for the connection (e.g., for a checkbox). |
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| 534 | * @type bool 'done' Has this connection already been publicized to? |
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| 535 | * @type bool 'toggleable' Is the user allowed to change the value for the connection? |
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| 536 | * @type bool 'global' Is this connection a global one? |
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| 537 | * } |
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| 538 | */ |
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| 539 | public function get_filtered_connection_data( $selected_post_id = null ) { |
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| 674 | |||
| 675 | /** |
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| 676 | * Checks if post has already been shared by Publicize in the past. |
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| 677 | * |
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| 678 | * @since 6.7.0 |
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| 679 | * |
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| 680 | * @param integer $post_id Optional. Post ID to query connection status for: will use current post if missing. |
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| 681 | * |
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| 682 | * @return bool True if post has already been shared by Publicize, false otherwise. |
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| 683 | */ |
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| 684 | abstract public function post_is_done_sharing( $post_id = null ); |
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| 685 | |||
| 686 | /** |
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| 687 | * Retrieves full list of available Publicize connection services. |
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| 688 | * |
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| 689 | * Retrieves current available publicize service connections |
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| 690 | * with associated labels and URLs. |
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| 691 | * |
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| 692 | * @since 6.7.0 |
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| 693 | * |
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| 694 | * @return array { |
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| 695 | * Array of UI service connection data for all services |
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| 696 | * |
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| 697 | * @type string 'name' Name of service. |
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| 698 | * @type string 'label' Display label for service. |
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| 699 | * @type string 'url' URL for adding connection to service. |
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| 700 | * } |
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| 701 | */ |
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| 702 | function get_available_service_data() { |
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| 716 | |||
| 717 | /* |
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| 718 | * Site Data |
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| 719 | */ |
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| 720 | |||
| 721 | function user_id() { |
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| 724 | |||
| 725 | function blog_id() { |
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| 728 | |||
| 729 | /* |
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| 730 | * Posts |
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| 731 | */ |
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| 732 | |||
| 733 | /** |
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| 734 | * Checks old and new status to see if the post should be flagged as |
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| 735 | * ready to Publicize. |
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| 736 | * |
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| 737 | * Attached to the `transition_post_status` filter. |
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| 738 | * |
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| 739 | * @param string $new_status |
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| 740 | * @param string $old_status |
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| 741 | * @param WP_Post $post |
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| 742 | * @return void |
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| 743 | */ |
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| 744 | abstract function flag_post_for_publicize( $new_status, $old_status, $post ); |
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| 745 | |||
| 746 | /** |
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| 747 | * Fires when a post is saved, checks conditions and saves state in postmeta so that it |
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| 748 | * can be picked up later by @see ::publicize_post() on WordPress.com codebase. |
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| 749 | * |
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| 750 | * Attached to the `save_post` action. |
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| 751 | * |
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| 752 | * @param int $post_id |
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| 753 | * @param WP_Post $post |
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| 754 | * @return void |
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| 755 | */ |
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| 756 | function save_meta( $post_id, $post ) { |
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| 911 | |||
| 912 | /** |
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| 913 | * Alters the "Post Published" message to include information about where the post |
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| 914 | * was Publicized to. |
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| 915 | * |
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| 916 | * Attached to the `post_updated_messages` filter |
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| 917 | * |
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| 918 | * @param string[] $messages |
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| 919 | * @return string[] |
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| 920 | */ |
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| 921 | public function update_published_message( $messages ) { |
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| 981 | |||
| 982 | /** |
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| 983 | * Get the Connections the Post was just Publicized to. |
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| 984 | * |
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| 985 | * Only reliable just after the Post was published. |
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| 986 | * |
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| 987 | * @param int $post_id |
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| 988 | * @return string[] Array of Service display name => Connection display name |
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| 989 | */ |
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| 990 | function get_publicizing_services( $post_id ) { |
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| 1012 | |||
| 1013 | /** |
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| 1014 | * Is the post Publicize-able? |
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| 1015 | * |
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| 1016 | * Only valid prior to Publicizing a Post. |
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| 1017 | * |
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| 1018 | * @param WP_Post $post |
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| 1019 | * @return bool |
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| 1020 | */ |
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| 1021 | function post_is_publicizeable( $post ) { |
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| 1036 | |||
| 1037 | /** |
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| 1038 | * Is a given post type Publicize-able? |
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| 1039 | * |
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| 1040 | * Not every CPT lends itself to Publicize-ation. Allow CPTs to register by adding their CPT via |
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| 1041 | * the publicize_post_types array filter. |
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| 1042 | * |
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| 1043 | * @param string $post_type The post type to check. |
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| 1044 | * @return bool True if the post type can be Publicized. |
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| 1045 | */ |
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| 1046 | function post_type_is_publicizeable( $post_type ) { |
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| 1052 | |||
| 1053 | /** |
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| 1054 | * Already-published posts should not be Publicized by default. This filter sets checked to |
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| 1055 | * false if a post has already been published. |
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| 1056 | * |
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| 1057 | * Attached to the `publicize_checkbox_default` filter |
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| 1058 | * |
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| 1059 | * @param bool $checked |
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| 1060 | * @param int $post_id |
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| 1061 | * @param string $service_name 'facebook', 'twitter', etc |
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| 1062 | * @param object|array The Connection object (WordPress.com) or array (Jetpack) |
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| 1063 | * @return bool |
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| 1064 | */ |
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| 1065 | function publicize_checkbox_default( $checked, $post_id, $service_name, $connection ) { |
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| 1072 | |||
| 1073 | /* |
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| 1074 | * Util |
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| 1075 | */ |
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| 1076 | |||
| 1077 | /** |
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| 1078 | * Converts a Publicize message template string into a sprintf format string |
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| 1079 | * |
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| 1080 | * @param string[] $args |
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| 1081 | * 0 - The Publicize message template: 'Check out my post: %title% @ %url' |
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| 1082 | * ... - The template tags 'title', 'url', etc. |
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| 1083 | * @return string |
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| 1084 | */ |
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| 1085 | protected static function build_sprintf( $args ) { |
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| 1098 | } |
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| 1099 | |||
| 1114 |
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In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
integervalues, zero is a special case, in particular the following results might be unexpected: