Automattic /
jetpack
Complex classes like Base_Admin_Menu 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 Base_Admin_Menu, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 15 | abstract class Base_Admin_Menu { |
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| 16 | /** |
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| 17 | * Holds class instances. |
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| 18 | * |
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| 19 | * @var array |
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| 20 | */ |
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| 21 | protected static $instances; |
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| 22 | |||
| 23 | /** |
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| 24 | * Whether the current request is a REST API request. |
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| 25 | * |
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| 26 | * @var bool |
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| 27 | */ |
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| 28 | protected $is_api_request = false; |
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| 29 | |||
| 30 | /** |
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| 31 | * Domain of the current site. |
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| 32 | * |
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| 33 | * @var string |
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| 34 | */ |
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| 35 | protected $domain; |
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| 36 | |||
| 37 | /** |
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| 38 | * The CSS classes used to hide the submenu items in navigation. |
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| 39 | * |
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| 40 | * @var string |
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| 41 | */ |
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| 42 | const HIDE_CSS_CLASS = 'hide-if-js'; |
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| 43 | |||
| 44 | /** |
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| 45 | * Base_Admin_Menu constructor. |
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| 46 | */ |
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| 47 | protected function __construct() { |
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| 57 | |||
| 58 | /** |
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| 59 | * Determine if the current request is from API |
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| 60 | */ |
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| 61 | public function set_is_api_request() { |
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| 67 | |||
| 68 | /** |
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| 69 | * Returns class instance. |
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| 70 | * |
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| 71 | * @return Admin_Menu |
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| 72 | */ |
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| 73 | public static function get_instance() { |
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| 82 | |||
| 83 | /** |
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| 84 | * Sets up class properties for REST API requests. |
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| 85 | * |
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| 86 | * @param \WP_REST_Response $response Response from the endpoint. |
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| 87 | */ |
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| 88 | public function rest_api_init( $response ) { |
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| 93 | |||
| 94 | /** |
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| 95 | * Updates the menu data of the given menu slug. |
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| 96 | * |
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| 97 | * @param string $slug Slug of the menu to update. |
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| 98 | * @param string $url New menu URL. |
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| 99 | * @param string $title New menu title. |
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| 100 | * @param string $cap New menu capability. |
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| 101 | * @param string $icon New menu icon. |
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| 102 | * @param int $position New menu position. |
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| 103 | * @return bool Whether the menu has been updated. |
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| 104 | */ |
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| 105 | public function update_menu( $slug, $url = null, $title = null, $cap = null, $icon = null, $position = null ) { |
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| 106 | global $menu, $submenu; |
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| 107 | |||
| 108 | $menu_item = null; |
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| 109 | $menu_position = null; |
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| 110 | |||
| 111 | foreach ( $menu as $i => $item ) { |
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| 112 | if ( $slug === $item[2] ) { |
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| 113 | $menu_item = $item; |
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| 114 | $menu_position = $i; |
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| 115 | break; |
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| 116 | } |
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| 117 | } |
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| 118 | |||
| 119 | if ( ! $menu_item ) { |
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| 120 | return false; |
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| 121 | } |
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| 122 | |||
| 123 | if ( $title ) { |
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| 124 | $menu_item[0] = $title; |
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| 125 | $menu_item[3] = esc_attr( $title ); |
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| 126 | } |
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| 127 | |||
| 128 | if ( $cap ) { |
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| 129 | $menu_item[1] = $cap; |
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| 130 | } |
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| 131 | |||
| 132 | // Change parent slug only if there are no submenus (the slug of the 1st submenu will be used if there are submenus). |
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| 133 | if ( $url ) { |
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| 134 | $this->hide_submenu_page( $slug, $slug ); |
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| 135 | |||
| 136 | if ( ! isset( $submenu[ $slug ] ) || ! $this->has_visible_items( $submenu[ $slug ] ) ) { |
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| 137 | $menu_item[2] = $url; |
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| 138 | } |
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| 139 | } |
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| 140 | |||
| 141 | if ( $icon ) { |
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| 142 | $menu_item[4] = 'menu-top'; |
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| 143 | $menu_item[6] = $icon; |
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| 144 | } |
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| 145 | |||
| 146 | // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited |
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| 147 | unset( $menu[ $menu_position ] ); |
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| 148 | if ( $position ) { |
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| 149 | $menu_position = $position; |
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| 150 | } |
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| 151 | $this->set_menu_item( $menu_item, $menu_position ); |
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| 152 | |||
| 153 | // Only add submenu when there are other submenu items. |
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| 154 | if ( $url && isset( $submenu[ $slug ] ) && $this->has_visible_items( $submenu[ $slug ] ) ) { |
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| 155 | add_submenu_page( $slug, $menu_item[3], $menu_item[0], $menu_item[1], $url, null, 0 ); |
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| 156 | } |
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| 157 | |||
| 158 | return true; |
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| 159 | } |
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| 160 | |||
| 161 | /** |
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| 162 | * Updates the submenus of the given menu slug. |
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| 163 | * |
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| 164 | * It hides the menu by adding the `hide-if-js` css class and duplicates the submenu with the new slug. |
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| 165 | * |
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| 166 | * @param string $slug Menu slug. |
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| 167 | * @param array $submenus_to_update Array of new submenu slugs. |
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| 168 | */ |
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| 169 | public function update_submenus( $slug, $submenus_to_update ) { |
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| 219 | |||
| 220 | /** |
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| 221 | * Adds a menu separator. |
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| 222 | * |
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| 223 | * @param int $position The position in the menu order this item should appear. |
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| 224 | * @param string $cap Optional. The capability required for this menu to be displayed to the user. |
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| 225 | * Default: 'read'. |
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| 226 | */ |
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| 227 | public function add_admin_menu_separator( $position = null, $cap = 'read' ) { |
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| 238 | |||
| 239 | /** |
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| 240 | * Enqueues scripts and styles. |
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| 241 | */ |
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| 242 | public function enqueue_scripts() { |
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| 273 | |||
| 274 | /** |
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| 275 | * Mark the core colors stylesheets as RTL depending on the value from the environment. |
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| 276 | * This fixes a core issue where the extra RTL data is not added to the colors stylesheet. |
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| 277 | * https://core.trac.wordpress.org/ticket/53090 |
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| 278 | */ |
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| 279 | public function configure_colors_for_rtl_stylesheets() { |
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| 282 | |||
| 283 | /** |
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| 284 | * Injects inline-styles for site icon for when third-party plugins remove enqueued stylesheets. |
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| 285 | * Unable to use wp_add_inline_style as plugins remove styles from all non-standard handles |
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| 286 | */ |
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| 287 | public function set_site_icon_inline_styles() { |
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| 296 | |||
| 297 | /** |
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| 298 | * Hide the submenu page based on slug and return the item that was hidden. |
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| 299 | * |
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| 300 | * Instead of actually removing the submenu item, a safer approach is to hide it and filter it in the API response. |
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| 301 | * In this manner we'll avoid breaking third-party plugins depending on items that no longer exist. |
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| 302 | * |
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| 303 | * A false|array value is returned to be consistent with remove_submenu_page() function |
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| 304 | * |
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| 305 | * @param string $menu_slug The parent menu slug. |
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| 306 | * @param string $submenu_slug The submenu slug that should be hidden. |
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| 307 | * @return false|array |
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| 308 | */ |
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| 309 | public function hide_submenu_page( $menu_slug, $submenu_slug ) { |
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| 328 | |||
| 329 | /** |
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| 330 | * Apply the hide-if-js CSS class to a submenu item. |
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| 331 | * |
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| 332 | * @param int $index The position of a submenu item in the submenu array. |
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| 333 | * @param string $parent_slug The parent slug. |
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| 334 | * @param array $item The submenu item. |
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| 335 | */ |
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| 336 | public function hide_submenu_element( $index, $parent_slug, $item ) { |
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| 344 | |||
| 345 | /** |
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| 346 | * Check if the menu has submenu items visible |
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| 347 | * |
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| 348 | * @param array $submenu_items The submenu items. |
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| 349 | * @return bool |
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| 350 | */ |
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| 351 | public function has_visible_items( $submenu_items ) { |
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| 361 | |||
| 362 | /** |
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| 363 | * Return the number of existing submenu items under the supplied parent slug. |
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| 364 | * |
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| 365 | * @param string $parent_slug The slug of the parent menu. |
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| 366 | * @return int The number of submenu items under $parent_slug. |
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| 367 | */ |
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| 368 | public function get_submenu_item_count( $parent_slug ) { |
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| 377 | |||
| 378 | /** |
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| 379 | * Adds the given menu item in the specified position. |
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| 380 | * |
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| 381 | * @param array $item The menu item to add. |
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| 382 | * @param int $position The position in the menu order this item should appear. |
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| 383 | */ |
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| 384 | public function set_menu_item( $item, $position = null ) { |
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| 398 | |||
| 399 | /** |
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| 400 | * Determines whether the current locale is right-to-left (RTL). |
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| 401 | */ |
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| 402 | public function is_rtl() { |
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| 405 | |||
| 406 | /** |
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| 407 | * Checks for any SVG icons in the menu, and overrides things so that |
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| 408 | * we can display the icon in the correct colour for the theme. |
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| 409 | */ |
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| 410 | public function override_svg_icons() { |
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| 469 | |||
| 470 | /** |
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| 471 | * Whether to use wp-admin pages rather than Calypso. |
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| 472 | * |
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| 473 | * Options: |
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| 474 | * false - Calypso (Default). |
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| 475 | * true - wp-admin. |
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| 476 | * |
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| 477 | * @return bool |
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| 478 | */ |
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| 479 | abstract public function should_link_to_wp_admin(); |
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| 480 | |||
| 481 | /** |
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| 482 | * Create the desired menu output. |
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| 483 | */ |
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| 484 | abstract public function reregister_menu_items(); |
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| 485 | } |
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| 486 |
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This check looks for
@paramannotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.