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 Jetpack_About_Page 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 Jetpack_About_Page, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 20 | class Jetpack_About_Page extends Jetpack_Admin_Page { |
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| 21 | |||
| 22 | /** |
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| 23 | * Show the settings page only when Jetpack is connected or in dev mode. |
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| 24 | * |
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| 25 | * @var bool If the page should be shown. |
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| 26 | */ |
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| 27 | protected $dont_show_if_not_active = true; |
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| 28 | |||
| 29 | /** |
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| 30 | * Anonymous info about a12s. The method fetch_a8c_data() stores the response from wpcom here. |
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| 31 | * |
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| 32 | * @var array |
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| 33 | */ |
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| 34 | private $a8c_data = null; |
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| 35 | |||
| 36 | /** |
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| 37 | * Add a submenu item to the Jetpack admin menu. |
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| 38 | * |
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| 39 | * @return string |
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| 40 | */ |
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| 41 | public function get_page_hook() { |
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| 52 | |||
| 53 | /** |
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| 54 | * Add page action |
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| 55 | * |
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| 56 | * @param string $hook Hook of current page, unused. |
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| 57 | */ |
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| 58 | public function add_page_actions( $hook ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable |
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| 61 | |||
| 62 | /** |
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| 63 | * Enqueues scripts and styles for the admin page. |
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| 64 | */ |
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| 65 | public function page_admin_scripts() { |
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| 74 | |||
| 75 | /** |
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| 76 | * Load styles for static page. |
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| 77 | */ |
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| 78 | public function additional_styles() { |
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| 81 | |||
| 82 | /** |
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| 83 | * Render the page with a common top and bottom part, and page specific content |
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| 84 | */ |
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| 85 | public function render() { |
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| 88 | |||
| 89 | /** |
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| 90 | * Render the page content |
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| 91 | */ |
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| 92 | public function page_render() { |
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| 215 | |||
| 216 | /** |
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| 217 | * Add information cards for a8c plugins. |
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| 218 | */ |
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| 219 | public function display_plugins() { |
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| 220 | $plugins_allowedtags = array( |
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| 221 | 'a' => array( |
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| 222 | 'href' => array(), |
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| 223 | 'title' => array(), |
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| 224 | 'target' => array(), |
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| 225 | ), |
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| 226 | 'abbr' => array( 'title' => array() ), |
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| 227 | 'acronym' => array( 'title' => array() ), |
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| 228 | 'code' => array(), |
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| 229 | 'pre' => array(), |
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| 230 | 'em' => array(), |
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| 231 | 'strong' => array(), |
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| 232 | 'ul' => array(), |
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| 233 | 'ol' => array(), |
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| 234 | 'li' => array(), |
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| 235 | 'p' => array(), |
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| 236 | 'br' => array(), |
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| 237 | ); |
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| 238 | |||
| 239 | // slugs for plugins we want to display. |
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| 240 | $a8c_plugins = $this->a8c_data['featured_plugins']; |
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| 241 | |||
| 242 | // need this to access the plugins_api() function. |
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| 243 | include_once ABSPATH . 'wp-admin/includes/plugin-install.php'; |
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| 244 | |||
| 245 | $plugins = array(); |
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| 246 | foreach ( $a8c_plugins as $slug ) { |
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| 247 | $args = array( |
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| 248 | 'slug' => $slug, |
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| 249 | 'fields' => array( |
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| 250 | 'added' => false, |
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| 251 | 'author' => false, |
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| 252 | 'author_profile' => false, |
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| 253 | 'banners' => false, |
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| 254 | 'contributors' => false, |
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| 255 | 'donate_link' => false, |
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| 256 | 'homepage' => false, |
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| 257 | 'reviews' => false, |
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| 258 | 'screenshots' => false, |
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| 259 | 'support_threads' => false, |
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| 260 | 'support_threads_resolved' => false, |
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| 261 | 'sections' => false, |
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| 262 | 'tags' => false, |
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| 263 | 'versions' => false, |
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| 264 | |||
| 265 | 'compatibility' => true, |
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| 266 | 'downloaded' => true, |
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| 267 | 'downloadlink' => true, |
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| 268 | 'icons' => true, |
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| 269 | 'last_updated' => true, |
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| 270 | 'num_ratings' => true, |
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| 271 | 'rating' => true, |
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| 272 | 'requires' => true, |
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| 273 | 'requires_php' => true, |
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| 274 | 'short_description' => true, |
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| 275 | 'tested' => true, |
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| 276 | ), |
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| 277 | ); |
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| 278 | |||
| 279 | // should probably add some error checking here too. |
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| 280 | $api = plugins_api( 'plugin_information', $args ); |
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| 281 | $plugins[] = $api; |
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| 282 | } |
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| 283 | |||
| 284 | foreach ( $plugins as $plugin ) { |
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| 285 | if ( is_object( $plugin ) ) { |
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| 286 | $plugin = (array) $plugin; |
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| 287 | } |
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| 288 | |||
| 289 | $title = wp_kses( $plugin['name'], $plugins_allowedtags ); |
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| 290 | $version = wp_kses( $plugin['version'], $plugins_allowedtags ); |
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| 291 | |||
| 292 | $name = wp_strip_all_tags( $title . ' ' . $version ); |
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| 293 | |||
| 294 | // Remove any HTML from the description. |
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| 295 | $description = wp_strip_all_tags( $plugin['short_description'] ); |
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| 296 | |||
| 297 | $wp_version = get_bloginfo( 'version' ); |
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| 298 | |||
| 299 | $compatible_php = ( empty( $plugin['requires_php'] ) || version_compare( phpversion(), $plugin['requires_php'], '>=' ) ); |
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| 300 | $compatible_wp = ( empty( $plugin['requires'] ) || version_compare( $wp_version, $plugin['requires'], '>=' ) ); |
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| 301 | |||
| 302 | $action_links = array(); |
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| 303 | |||
| 304 | // install button. |
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| 305 | if ( current_user_can( 'install_plugins' ) || current_user_can( 'update_plugins' ) ) { |
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| 306 | $status = install_plugin_install_status( $plugin ); |
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| 307 | switch ( $status['status'] ) { |
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| 308 | case 'install': |
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| 309 | if ( $status['url'] ) { |
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| 310 | if ( $compatible_php && $compatible_wp ) { |
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| 311 | $action_links[] = sprintf( |
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| 312 | '<a class="install-now button jptracks" data-slug="%1$s" href="%2$s" aria-label="%3$s" data-name="%4$s" data-jptracks-name="jetpack_about_install_button" data-jptracks-prop="%4$s">%5$s</a>', |
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| 313 | esc_attr( $plugin['slug'] ), |
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| 314 | esc_url( $status['url'] ), |
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| 315 | /* translators: %s: plugin name and version */ |
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| 316 | esc_attr( sprintf( __( 'Install %s now', 'jetpack' ), $name ) ), |
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| 317 | esc_attr( $name ), |
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| 318 | esc_html__( 'Install Now', 'jetpack' ) |
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| 319 | ); |
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| 320 | } else { |
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| 321 | $action_links[] = sprintf( |
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| 322 | '<button type="button" class="button button-disabled" disabled="disabled">%s</button>', |
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| 323 | _x( 'Cannot Install', 'plugin', 'jetpack' ) |
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| 324 | ); |
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| 325 | } |
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| 326 | } |
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| 327 | break; |
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| 328 | |||
| 329 | case 'update_available': |
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| 330 | if ( $status['url'] ) { |
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| 331 | $action_links[] = sprintf( |
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| 332 | '<a class="update-now button aria-button-if-js jptracks" data-plugin="%1$s" data-slug="%2$s" href="%3$s" aria-label="%4$s" data-name="%5$s" data-jptracks-name="jetpack_about_update_button" data-jptracks-prop="%5$s">%6$s</a>', |
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| 333 | esc_attr( $status['file'] ), |
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| 334 | esc_attr( $plugin['slug'] ), |
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| 335 | esc_url( $status['url'] ), |
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| 336 | /* translators: %s: plugin name and version */ |
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| 337 | esc_attr( sprintf( __( 'Update %s now', 'jetpack' ), $name ) ), |
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| 338 | esc_attr( $name ), |
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| 339 | __( 'Update Now', 'jetpack' ) |
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| 340 | ); |
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| 341 | } |
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| 342 | break; |
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| 343 | |||
| 344 | case 'latest_installed': |
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| 345 | case 'newer_installed': |
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| 346 | if ( is_plugin_active( $status['file'] ) ) { |
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| 347 | $action_links[] = sprintf( |
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| 348 | '<button type="button" class="button button-disabled" disabled="disabled">%s</button>', |
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| 349 | _x( 'Active', 'plugin', 'jetpack' ) |
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| 350 | ); |
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| 351 | } elseif ( current_user_can( 'activate_plugin', $status['file'] ) ) { |
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| 352 | $button_text = __( 'Activate', 'jetpack' ); |
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| 353 | /* translators: %s: plugin name */ |
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| 354 | $button_label = _x( 'Activate %s', 'plugin', 'jetpack' ); |
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| 355 | $activate_url = add_query_arg( |
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| 356 | array( |
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| 357 | '_wpnonce' => wp_create_nonce( 'activate-plugin_' . $status['file'] ), |
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| 358 | 'action' => 'activate', |
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| 359 | 'plugin' => $status['file'], |
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| 360 | ), |
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| 361 | network_admin_url( 'plugins.php' ) |
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| 362 | ); |
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| 363 | |||
| 364 | if ( is_network_admin() ) { |
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| 365 | $button_text = __( 'Network Activate', 'jetpack' ); |
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| 366 | /* translators: %s: plugin name */ |
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| 367 | $button_label = _x( 'Network Activate %s', 'plugin', 'jetpack' ); |
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| 368 | $activate_url = add_query_arg( array( 'networkwide' => 1 ), $activate_url ); |
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| 369 | } |
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| 370 | |||
| 371 | $action_links[] = sprintf( |
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| 372 | '<a href="%1$s" class="button activate-now" aria-label="%2$s" data-jptracks-name="jetpack_about_activate_button" data-jptracks-prop="%3$s">%4$s</a>', |
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| 373 | esc_url( $activate_url ), |
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| 374 | esc_attr( sprintf( $button_label, $plugin['name'] ) ), |
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| 375 | esc_attr( $plugin['name'] ), |
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| 376 | $button_text |
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| 377 | ); |
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| 378 | } else { |
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| 379 | $action_links[] = sprintf( |
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| 380 | '<button type="button" class="button button-disabled" disabled="disabled">%s</button>', |
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| 381 | _x( 'Installed', 'plugin', 'jetpack' ) |
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| 382 | ); |
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| 383 | } |
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| 384 | break; |
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| 385 | } |
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| 386 | } |
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| 387 | |||
| 388 | $plugin_install = "plugin-install.php?tab=plugin-information&plugin={$plugin['slug']}&TB_iframe=true&width=600&height=550"; |
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| 389 | $details_link = is_multisite() |
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| 390 | ? network_admin_url( $plugin_install ) |
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| 391 | : admin_url( $plugin_install ); |
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| 392 | |||
| 393 | if ( ! empty( $plugin['icons']['svg'] ) ) { |
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| 394 | $plugin_icon_url = $plugin['icons']['svg']; |
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| 395 | } elseif ( ! empty( $plugin['icons']['2x'] ) ) { |
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| 396 | $plugin_icon_url = $plugin['icons']['2x']; |
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| 397 | } elseif ( ! empty( $plugin['icons']['1x'] ) ) { |
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| 398 | $plugin_icon_url = $plugin['icons']['1x']; |
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| 399 | } else { |
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| 400 | $plugin_icon_url = $plugin['icons']['default']; |
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| 401 | } |
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| 402 | ?> |
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| 403 | |||
| 404 | <li class="jetpack-about__plugin plugin-card-<?php echo sanitize_html_class( $plugin['slug'] ); ?>"> |
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| 405 | <?php |
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| 406 | if ( ! $compatible_php || ! $compatible_wp ) { |
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| 407 | echo '<div class="notice inline notice-error notice-alt"><p>'; |
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| 408 | if ( ! $compatible_php && ! $compatible_wp ) { |
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| 409 | esc_html_e( 'This plugin doesn’t work with your versions of WordPress and PHP.', 'jetpack' ); |
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| 410 | if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) { |
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| 411 | printf( |
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| 412 | /* translators: 1: "Update WordPress" screen URL, 2: "Update PHP" page URL */ |
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| 413 | ' ' . wp_kses( __( '<a href="%1$s">Please update WordPress</a>, and then <a href="%2$s">learn more about updating PHP</a>.', 'jetpack' ), array( 'a' => array( 'href' => true ) ) ), |
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| 414 | esc_url( self_admin_url( 'update-core.php' ) ), |
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| 415 | esc_url( wp_get_update_php_url() ) |
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| 416 | ); |
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| 417 | wp_update_php_annotation(); |
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| 418 | } elseif ( current_user_can( 'update_core' ) ) { |
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| 419 | printf( |
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| 420 | /* translators: %s: "Update WordPress" screen URL */ |
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| 421 | ' ' . wp_kses( __( '<a href="%s">Please update WordPress</a>.', 'jetpack' ), array( 'a' => array( 'href' => true ) ) ), |
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| 422 | esc_url( self_admin_url( 'update-core.php' ) ) |
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| 423 | ); |
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| 424 | View Code Duplication | } elseif ( current_user_can( 'update_php' ) ) { |
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| 425 | printf( |
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| 426 | /* translators: %s: "Update PHP" page URL */ |
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| 427 | ' ' . wp_kses( __( '<a href="%s">Learn more about updating PHP</a>.', 'jetpack' ), array( 'a' => array( 'href' => true ) ) ), |
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| 428 | esc_url( wp_get_update_php_url() ) |
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| 429 | ); |
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| 430 | wp_update_php_annotation(); |
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| 431 | } |
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| 432 | View Code Duplication | } elseif ( ! $compatible_wp ) { |
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| 433 | esc_html_e( 'This plugin doesn’t work with your version of WordPress.', 'jetpack' ); |
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| 434 | if ( current_user_can( 'update_core' ) ) { |
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| 435 | printf( |
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| 436 | /* translators: %s: "Update WordPress" screen URL */ |
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| 437 | ' ' . wp_kses( __( '<a href="%s">Please update WordPress</a>.', 'jetpack' ), array( 'a' => array( 'href' => true ) ) ), |
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| 438 | esc_url( self_admin_url( 'update-core.php' ) ) |
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| 439 | ); |
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| 440 | } |
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| 441 | } elseif ( ! $compatible_php ) { |
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| 442 | esc_html_e( 'This plugin doesn’t work with your version of PHP.', 'jetpack' ); |
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| 443 | if ( current_user_can( 'update_php' ) ) { |
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| 444 | printf( |
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| 445 | /* translators: %s: "Update PHP" page URL */ |
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| 446 | ' ' . wp_kses( __( '<a href="%s">Learn more about updating PHP</a>.', 'jetpack' ), array( 'a' => array( 'href' => true ) ) ), |
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| 447 | esc_url( wp_get_update_php_url() ) |
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| 448 | ); |
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| 449 | wp_update_php_annotation(); |
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| 450 | } |
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| 451 | } |
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| 452 | echo '</p></div>'; |
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| 453 | } |
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| 454 | ?> |
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| 455 | |||
| 456 | <div class="plugin-card-top"> |
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| 457 | <div class="name column-name"> |
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| 458 | <h3> |
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| 459 | <a href="<?php echo esc_url( $details_link ); ?>" class="jptracks thickbox open-plugin-details-modal" data-jptracks-name="jetpack_about_plugin_modal" data-jptracks-prop="<?php echo esc_attr( $plugin['slug'] ); ?>"> |
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| 460 | <?php echo esc_html( $title ); ?> |
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| 461 | <img src="<?php echo esc_url( $plugin_icon_url ); ?>" class="plugin-icon" alt="<?php esc_attr_e( 'Plugin icon', 'jetpack' ); ?>" aria-hidden="true"> |
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| 462 | </a> |
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| 463 | </h3> |
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| 464 | </div> |
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| 465 | <div class="desc column-description"> |
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| 466 | <p><?php echo esc_html( $description ); ?></p> |
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| 467 | </div> |
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| 468 | |||
| 469 | <div class="details-link"> |
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| 470 | <a class="jptracks thickbox open-plugin-details-modal" href="<?php echo esc_url( $details_link ); ?>" data-jptracks-name="jetpack_about_plugin_details_modal" data-jptracks-prop="<?php echo esc_attr( $plugin['slug'] ); ?>"><?php esc_html_e( 'More Details', 'jetpack' ); ?></a> |
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| 471 | </div> |
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| 472 | </div> |
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| 473 | |||
| 474 | <div class="plugin-card-bottom"> |
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| 475 | <div class="meta"> |
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| 476 | <?php |
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| 477 | wp_star_rating( |
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| 478 | array( |
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| 479 | 'rating' => $plugin['rating'], |
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| 480 | 'type' => 'percent', |
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| 481 | 'number' => $plugin['num_ratings'], |
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| 482 | ) |
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| 483 | ); |
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| 484 | ?> |
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| 485 | <span class="num-ratings" aria-hidden="true">(<?php echo esc_html( number_format_i18n( $plugin['num_ratings'] ) ); ?> <?php esc_html_e( 'ratings', 'jetpack' ); ?>)</span> |
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| 486 | <div class="downloaded"> |
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| 487 | <?php |
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| 488 | if ( $plugin['active_installs'] >= 1000000 ) { |
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| 489 | $active_installs_millions = floor( $plugin['active_installs'] / 1000000 ); |
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| 490 | $active_installs_text = sprintf( |
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| 491 | /* translators: number of millions of installs. */ |
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| 492 | _nx( '%s+ Million', '%s+ Million', $active_installs_millions, 'Active plugin installations', 'jetpack' ), |
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| 493 | number_format_i18n( $active_installs_millions ) |
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| 494 | ); |
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| 495 | } elseif ( 0 === $plugin['active_installs'] ) { |
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| 496 | $active_installs_text = _x( 'Less Than 10', 'Active plugin installations', 'jetpack' ); |
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| 497 | } else { |
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| 498 | $active_installs_text = number_format_i18n( $plugin['active_installs'] ) . '+'; |
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| 499 | } |
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| 500 | /* translators: number of active installs */ |
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| 501 | printf( esc_html__( '%s Active Installations', 'jetpack' ), esc_html( $active_installs_text ) ); |
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| 502 | ?> |
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| 503 | </div> |
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| 504 | </div> |
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| 505 | |||
| 506 | <div class="action-links"> |
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| 507 | <?php |
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| 508 | if ( $action_links ) { |
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|
|
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| 509 | // The var simply collects strings that have already been sanitized. |
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| 510 | // phpcs:ignore WordPress.Security.EscapeOutput |
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| 511 | echo '<ul class="action-buttons"><li>' . implode( '</li><li>', $action_links ) . '</li></ul>'; |
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| 512 | } |
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| 513 | ?> |
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| 514 | </div> |
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| 515 | </div> |
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| 516 | </li> |
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| 517 | <?php |
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| 518 | |||
| 519 | } |
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| 520 | |||
| 521 | } |
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| 522 | |||
| 523 | /** |
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| 524 | * Fetch anonymous data about A12s from wpcom: total count, number of countries, languages spoken. |
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| 525 | * |
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| 526 | * @since 7.4 |
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| 527 | * |
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| 528 | * @return array $data |
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| 529 | */ |
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| 530 | private function fetch_a8c_data() { |
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| 558 | |||
| 559 | /** |
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| 560 | * Compile and display a list of avatars for A12s that gave their permission. |
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| 561 | * |
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| 562 | * @since 7.3 |
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| 563 | */ |
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| 564 | public function display_gravatars() { |
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| 597 | } |
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| 598 |
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.