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| 1 | <?php |
| 2 | /** |
| 3 | * Dashboard Sections API: Dashboard_Section_Registry class. |
| 4 | * |
| 5 | * @package automattic/jetpack-premium-analytics |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\PremiumAnalytics; |
| 9 | |
| 10 | require_once __DIR__ . '/dashboard-grammar.php'; |
| 11 | |
| 12 | /** |
| 13 | * Stores Dashboard_Section instances keyed by dashboard and section ID. |
| 14 | * |
| 15 | * Hydrates on its first read: the registration action fires once, and every registrant, this |
| 16 | * package included, registers its sections from there. Reads happen after `init`, from wp-admin |
| 17 | * and from REST, so hooking the action is the one moment that covers both paths. |
| 18 | */ |
| 19 | final class Dashboard_Section_Registry { |
| 20 | |
| 21 | /** |
| 22 | * Action through which sections are registered, fired once on the first read. |
| 23 | * |
| 24 | * @since 0.9.0 |
| 25 | * @var string |
| 26 | */ |
| 27 | const REGISTER_ACTION = 'jetpack_premium_analytics_register_dashboard_sections'; |
| 28 | |
| 29 | /** |
| 30 | * Registered sections, as `$dashboard_name => $id => $section` pairs. |
| 31 | * |
| 32 | * @var array<string, Dashboard_Section[]> |
| 33 | */ |
| 34 | private $registered_sections = array(); |
| 35 | |
| 36 | /** |
| 37 | * Whether the registration action has fired. |
| 38 | * |
| 39 | * @var bool |
| 40 | */ |
| 41 | private $hydrated = false; |
| 42 | |
| 43 | /** |
| 44 | * Container for the main instance of the class. |
| 45 | * |
| 46 | * @var Dashboard_Section_Registry|null |
| 47 | */ |
| 48 | private static $instance = null; |
| 49 | |
| 50 | /** |
| 51 | * Registers a dashboard section. |
| 52 | * |
| 53 | * @param string $dashboard_name Dashboard identifier. |
| 54 | * @param string $id Section identifier. |
| 55 | * @param array $args Optional. Section arguments. |
| 56 | * @return Dashboard_Section|false The registered section on success, or false on failure. |
| 57 | */ |
| 58 | public function register( $dashboard_name, $id, $args = array() ) { |
| 59 | if ( ! $this->is_valid_dashboard_name( $dashboard_name ) ) { |
| 60 | _doing_it_wrong( |
| 61 | __METHOD__, |
| 62 | esc_html__( 'Dashboard names must be lowercase strings of letters, numbers, and hyphens, optionally separated by underscores.', 'jetpack-premium-analytics-pkg' ), |
| 63 | '0.1.0' |
| 64 | ); |
| 65 | return false; |
| 66 | } |
| 67 | |
| 68 | if ( ! $this->is_valid_section_id( $id ) ) { |
| 69 | _doing_it_wrong( |
| 70 | __METHOD__, |
| 71 | esc_html__( 'Dashboard section IDs must contain a namespace prefix. Example: my-plugin/my-custom-section', 'jetpack-premium-analytics-pkg' ), |
| 72 | '0.1.0' |
| 73 | ); |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | if ( $this->is_registered( $dashboard_name, $id ) ) { |
| 78 | _doing_it_wrong( |
| 79 | __METHOD__, |
| 80 | sprintf( |
| 81 | /* translators: 1: Dashboard name. 2: Dashboard section ID. */ |
| 82 | esc_html__( 'Dashboard section "%2$s" is already registered for dashboard "%1$s".', 'jetpack-premium-analytics-pkg' ), |
| 83 | esc_html( $dashboard_name ), |
| 84 | esc_html( $id ) |
| 85 | ), |
| 86 | '0.1.0' |
| 87 | ); |
| 88 | return false; |
| 89 | } |
| 90 | |
| 91 | $section = new Dashboard_Section( $dashboard_name, $id, $args ); |
| 92 | |
| 93 | // The client keys tabs, URLs and stored layouts by slug, so two ids may not share one. |
| 94 | $holder = $this->find_registered_by_slug( $dashboard_name, $section->slug ); |
| 95 | if ( $holder ) { |
| 96 | $message = sprintf( |
| 97 | /* translators: 1: Dashboard name. 2: Section slug. 3: ID of the section already using the slug. */ |
| 98 | __( 'Dashboard section slug "%2$s" is already used on dashboard "%1$s" by "%3$s".', 'jetpack-premium-analytics-pkg' ), |
| 99 | $dashboard_name, |
| 100 | $section->slug, |
| 101 | $holder->id |
| 102 | ); |
| 103 | // One line: tools/replace-next-version-tag.sh only rewrites the token in a single-line call. |
| 104 | _doing_it_wrong( __METHOD__, esc_html( $message ), 'jetpack-premium-analytics-0.9.0' ); |
| 105 | return false; |
| 106 | } |
| 107 | |
| 108 | if ( ! isset( $this->registered_sections[ $dashboard_name ] ) ) { |
| 109 | $this->registered_sections[ $dashboard_name ] = array(); |
| 110 | } |
| 111 | |
| 112 | $this->registered_sections[ $dashboard_name ][ $id ] = $section; |
| 113 | |
| 114 | return $section; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Retrieves a registered section. |
| 119 | * |
| 120 | * @param string $dashboard_name Dashboard identifier. |
| 121 | * @param string $id Section identifier. |
| 122 | * @return Dashboard_Section|null The registered section, or null when absent. |
| 123 | */ |
| 124 | public function get_registered( $dashboard_name, $id ) { |
| 125 | $this->ensure_hydrated(); |
| 126 | |
| 127 | if ( ! $this->is_registered( $dashboard_name, $id ) ) { |
| 128 | return null; |
| 129 | } |
| 130 | |
| 131 | return $this->registered_sections[ $dashboard_name ][ $id ]; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Retrieves a registered section by its URL-facing slug. |
| 136 | * |
| 137 | * @since 0.9.0 |
| 138 | * |
| 139 | * @param string $dashboard_name Dashboard identifier. |
| 140 | * @param string $slug Section slug, e.g. `ads`. |
| 141 | * @return Dashboard_Section|null The registered section, or null when no section uses the slug. |
| 142 | */ |
| 143 | public function get_registered_by_slug( $dashboard_name, $slug ) { |
| 144 | $this->ensure_hydrated(); |
| 145 | |
| 146 | return $this->find_registered_by_slug( $dashboard_name, $slug ); |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Finds a registered section by slug without hydrating: register() relies on it. |
| 151 | * |
| 152 | * @param string $dashboard_name Dashboard identifier. |
| 153 | * @param string $slug Section slug. |
| 154 | * @return Dashboard_Section|null |
| 155 | */ |
| 156 | private function find_registered_by_slug( $dashboard_name, $slug ) { |
| 157 | foreach ( $this->registered_sections[ $dashboard_name ] ?? array() as $section ) { |
| 158 | if ( $section->slug === $slug ) { |
| 159 | return $section; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | return null; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Retrieves all registered sections for a dashboard. |
| 168 | * |
| 169 | * @param string $dashboard_name Dashboard identifier. |
| 170 | * @return Dashboard_Section[] Map of `$id => $section` pairs. |
| 171 | */ |
| 172 | public function get_all_registered( $dashboard_name ) { |
| 173 | $this->ensure_hydrated(); |
| 174 | |
| 175 | if ( ! isset( $this->registered_sections[ $dashboard_name ] ) ) { |
| 176 | // Unknown dashboards may be valid REST targets but have no sections registered. |
| 177 | return array(); |
| 178 | } |
| 179 | |
| 180 | return $this->registered_sections[ $dashboard_name ]; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Retrieves available sections sorted by order. |
| 185 | * |
| 186 | * @param string $dashboard_name Dashboard identifier. |
| 187 | * @return Dashboard_Section[] Ordered list of available sections. |
| 188 | */ |
| 189 | public function get_available_sections( $dashboard_name ) { |
| 190 | $sections = array_filter( |
| 191 | $this->get_all_registered( $dashboard_name ), |
| 192 | static function ( Dashboard_Section $section ) { |
| 193 | return $section->is_available(); |
| 194 | } |
| 195 | ); |
| 196 | |
| 197 | uasort( |
| 198 | $sections, |
| 199 | static function ( Dashboard_Section $a, Dashboard_Section $b ) { |
| 200 | if ( $a->order === $b->order ) { |
| 201 | return strcmp( $a->id, $b->id ); |
| 202 | } |
| 203 | |
| 204 | return $a->order <=> $b->order; |
| 205 | } |
| 206 | ); |
| 207 | |
| 208 | return array_values( $sections ); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Checks if a section is registered. Does not hydrate: register() relies on it, and a |
| 213 | * registrant may run before the action fires. |
| 214 | * |
| 215 | * @param string $dashboard_name Dashboard identifier. |
| 216 | * @param string $id Section identifier. |
| 217 | * @return bool True if registered. |
| 218 | */ |
| 219 | public function is_registered( $dashboard_name, $id ) { |
| 220 | return isset( $this->registered_sections[ $dashboard_name ][ $id ] ); |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * Fires the registration action once, on the first read after `init`. |
| 225 | * |
| 226 | * @return void |
| 227 | */ |
| 228 | private function ensure_hydrated() { |
| 229 | if ( $this->hydrated ) { |
| 230 | return; |
| 231 | } |
| 232 | |
| 233 | // Latching this early would drop every registrant hooked later, so the read skips the action. |
| 234 | if ( ! did_action( 'init' ) ) { |
| 235 | $message = __( 'Dashboard sections are read after init. A read before it does not hydrate the registry and answers only what was registered directly.', 'jetpack-premium-analytics-pkg' ); |
| 236 | // One line: tools/replace-next-version-tag.sh only rewrites the token in a single-line call. |
| 237 | _doing_it_wrong( __METHOD__, esc_html( $message ), 'jetpack-premium-analytics-0.9.0' ); |
| 238 | return; |
| 239 | } |
| 240 | |
| 241 | // Latched before the action so a registrant that reads the registry cannot re-enter. |
| 242 | $this->hydrated = true; |
| 243 | |
| 244 | /** |
| 245 | * Fires when the dashboard section registry hydrates, on its first read after `init`. |
| 246 | * |
| 247 | * Register sections here rather than on `init`: the registry is read from wp-admin and |
| 248 | * from REST, and each path loads it at a different moment. A registrant that may run |
| 249 | * twice guards with `is_registered()`. |
| 250 | * |
| 251 | * @since 0.9.0 |
| 252 | * |
| 253 | * @param Dashboard_Section_Registry $registry The registry being hydrated. |
| 254 | */ |
| 255 | do_action( self::REGISTER_ACTION, $this ); |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * Utility method to retrieve the main instance of the class. |
| 260 | * |
| 261 | * @return Dashboard_Section_Registry The main instance. |
| 262 | */ |
| 263 | public static function get_instance() { |
| 264 | if ( null === self::$instance ) { |
| 265 | self::$instance = new self(); |
| 266 | } |
| 267 | |
| 268 | return self::$instance; |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * Checks whether a dashboard name can be registered. |
| 273 | * |
| 274 | * @param mixed $dashboard_name Candidate dashboard name. |
| 275 | * @return bool |
| 276 | */ |
| 277 | private function is_valid_dashboard_name( $dashboard_name ) { |
| 278 | return is_string( $dashboard_name ) && 1 === preg_match( '/^' . get_dashboard_name_pattern() . '$/', $dashboard_name ); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Checks whether a section ID can be registered. |
| 283 | * |
| 284 | * @param mixed $id Candidate section ID. |
| 285 | * @return bool |
| 286 | */ |
| 287 | private function is_valid_section_id( $id ) { |
| 288 | return is_string( $id ) && 1 === preg_match( '/^' . get_dashboard_section_id_pattern() . '$/', $id ); |
| 289 | } |
| 290 | } |