Complex classes like 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 Menu, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class Menu implements Item, Countable, HasHtmlAttributes, HasParentAttributes |
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| 14 | { |
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| 15 | use HtmlAttributes, ParentAttributes; |
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| 16 | |||
| 17 | /** @var array */ |
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| 18 | protected $items = []; |
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| 19 | |||
| 20 | /** @var string */ |
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| 21 | protected $prepend = ''; |
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| 22 | |||
| 23 | /** @var string */ |
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| 24 | protected $append = ''; |
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| 25 | |||
| 26 | /** @var array */ |
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| 27 | protected $filters = []; |
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| 28 | |||
| 29 | /** @var array */ |
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| 30 | protected $wrap = []; |
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| 31 | |||
| 32 | /** @var string */ |
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| 33 | protected $activeClass = 'active'; |
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| 34 | |||
| 35 | /** |
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| 36 | * @param \Spatie\Menu\Item[] ...$items |
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| 37 | */ |
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| 38 | protected function __construct(Item ...$items) |
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| 45 | |||
| 46 | /** |
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| 47 | * Create a new menu, optionally prefilled with items. |
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| 48 | * |
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| 49 | * @param array $items |
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| 50 | * |
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| 51 | * @return static |
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| 52 | */ |
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| 53 | public static function new(array $items = []) |
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| 57 | |||
| 58 | /** |
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| 59 | * Add an item to the menu. This also applies all registered filters to the |
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| 60 | * item. |
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| 61 | * |
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| 62 | * @param \Spatie\Menu\Item $item |
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| 63 | * |
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| 64 | * @return $this |
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| 65 | */ |
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| 66 | public function add(Item $item) |
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| 76 | |||
| 77 | /** |
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| 78 | * Add an item to the menu if a (non-strict) condition is met. |
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| 79 | * |
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| 80 | * @param bool $condition |
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| 81 | * @param \Spatie\Menu\Item $item |
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| 82 | * |
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| 83 | * @return $this |
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| 84 | */ |
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| 85 | public function addIf($condition, Item $item) |
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| 93 | |||
| 94 | /** |
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| 95 | * Shortcut function to add a plain link to the menu. |
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| 96 | * |
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| 97 | * @param string $url |
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| 98 | * @param string $text |
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| 99 | * |
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| 100 | * @return $this |
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| 101 | */ |
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| 102 | public function link(string $url, string $text) |
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| 106 | |||
| 107 | /** |
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| 108 | * Add a link to the menu if a (non-strict) condition is met. |
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| 109 | * |
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| 110 | * @param bool $condition |
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| 111 | * @param string $url |
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| 112 | * @param string $text |
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| 113 | * |
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| 114 | * @return $this |
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| 115 | */ |
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| 116 | public function linkIf($condition, string $url, string $text) |
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| 124 | |||
| 125 | /** |
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| 126 | * Shortcut function to add raw html to the menu. |
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| 127 | * |
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| 128 | * @param string $html |
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| 129 | * |
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| 130 | * @return $this |
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| 131 | */ |
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| 132 | public function html(string $html) |
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| 136 | |||
| 137 | /** |
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| 138 | * Add a chunk of html if a (non-strict) condition is met. |
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| 139 | * |
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| 140 | * @param bool $condition |
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| 141 | * @param string $html |
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| 142 | * |
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| 143 | * @return $this |
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| 144 | */ |
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| 145 | public function htmlIf($condition, string $html) |
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| 153 | |||
| 154 | /** |
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| 155 | * Add an empty item with parent attributes. |
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| 156 | * |
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| 157 | * @param array $parentAttributes |
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| 158 | * |
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| 159 | * @return $this |
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| 160 | */ |
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| 161 | public function void(array $parentAttributes = []) |
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| 165 | |||
| 166 | /** |
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| 167 | * Add an empty item with parent attributes if a (non-strict) condition is met. |
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| 168 | * |
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| 169 | * @param $condition |
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| 170 | * @param array $parentAttributes |
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| 171 | * |
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| 172 | * @return $this |
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| 173 | */ |
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| 174 | public function voidIf($condition, array $parentAttributes = []) |
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| 182 | |||
| 183 | /** |
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| 184 | * @param callable|\Spatie\Menu\Menu|\Spatie\Menu\Item $header |
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| 185 | * @param callable|\Spatie\Menu\Menu|null $menu |
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| 186 | * |
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| 187 | * @return $this |
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| 188 | */ |
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| 189 | public function submenu($header, $menu = null) |
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| 198 | |||
| 199 | protected function parseSubmenuArgs($args): array |
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| 207 | |||
| 208 | /** |
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| 209 | * @param \Spatie\Menu\Menu|callable $menu |
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| 210 | * |
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| 211 | * @return \Spatie\Menu\Menu |
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| 212 | */ |
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| 213 | protected function createSubmenuMenu($menu): Menu |
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| 223 | |||
| 224 | /** |
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| 225 | * @param \Spatie\Menu\Item|string $header |
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| 226 | * |
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| 227 | * @return string |
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| 228 | */ |
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| 229 | protected function createSubmenuHeader($header): string |
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| 237 | |||
| 238 | /** |
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| 239 | * Iterate over all the items and apply a callback. If you typehint the |
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| 240 | * item parameter in the callable, it wil only be applied to items of that |
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| 241 | * type. |
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| 242 | * |
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| 243 | * @param callable $callable |
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| 244 | * |
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| 245 | * @return $this |
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| 246 | */ |
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| 247 | public function each(callable $callable) |
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| 261 | |||
| 262 | /** |
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| 263 | * Register a filter to the menu. When an item is added, all filters will be |
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| 264 | * applied to the item. If you typehint the item parameter in the callable, it |
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| 265 | * will only be applied to items of that type. |
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| 266 | * |
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| 267 | * @param callable $callable |
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| 268 | * |
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| 269 | * @return $this |
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| 270 | */ |
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| 271 | public function registerFilter(callable $callable) |
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| 277 | |||
| 278 | /** |
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| 279 | * Apply a filter to an item. Returns the result of the filter. |
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| 280 | * |
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| 281 | * @param callable $filter |
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| 282 | * @param \Spatie\Menu\Item $item |
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| 283 | */ |
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| 284 | protected function applyFilter(callable $filter, Item $item) |
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| 294 | |||
| 295 | /** |
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| 296 | * Apply a callable to all existing items, and register it as a filter so it |
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| 297 | * will get applied to all new items too. If you typehint the item parameter |
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| 298 | * in the callable, it wil only be applied to items of that type. |
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| 299 | * |
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| 300 | * @param callable $callable |
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| 301 | * |
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| 302 | * @return $this |
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| 303 | */ |
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| 304 | public function applyToAll(callable $callable) |
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| 311 | |||
| 312 | /** |
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| 313 | * Prefix all the links in the menu. |
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| 314 | * |
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| 315 | * @param string $prefix |
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| 316 | * |
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| 317 | * @return $this |
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| 318 | */ |
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| 319 | public function prefixLinks(string $prefix) |
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| 325 | |||
| 326 | /** |
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| 327 | * Prepend the menu with a string of html on render. |
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| 328 | * |
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| 329 | * @param string $prepend |
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| 330 | * |
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| 331 | * @return $this |
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| 332 | */ |
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| 333 | public function prepend(string $prepend) |
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| 339 | |||
| 340 | /** |
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| 341 | * Prepend the menu with a string of html on render if a certain condition is |
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| 342 | * met. |
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| 343 | * |
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| 344 | * @param bool $condition |
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| 345 | * @param string $prepend |
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| 346 | * |
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| 347 | * @return $this |
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| 348 | */ |
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| 349 | public function prependIf(bool $condition, string $prepend) |
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| 357 | |||
| 358 | /** |
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| 359 | * Append a string of html to the menu on render. |
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| 360 | * |
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| 361 | * @param string $append |
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| 362 | * |
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| 363 | * @return $this |
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| 364 | */ |
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| 365 | public function append(string $append) |
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| 371 | |||
| 372 | /** |
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| 373 | * Append the menu with a string of html on render if a certain condition is |
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| 374 | * met. |
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| 375 | * |
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| 376 | * @param bool $condition |
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| 377 | * @param string $append |
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| 378 | * |
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| 379 | * @return static |
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| 380 | */ |
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| 381 | public function appendIf(bool $condition, string $append) |
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| 389 | |||
| 390 | /** |
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| 391 | * Wrap the menu in an html element. |
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| 392 | * |
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| 393 | * @param string $element |
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| 394 | * @param array $attributes |
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| 395 | * |
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| 396 | * @return $this |
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| 397 | */ |
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| 398 | public function wrap(string $element, $attributes = []) |
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| 404 | |||
| 405 | /** |
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| 406 | * Determine whether the menu is active. |
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| 407 | * |
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| 408 | * @return bool |
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| 409 | */ |
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| 410 | public function isActive(): bool |
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| 420 | |||
| 421 | /** |
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| 422 | * Set multiple items in the menu as active based on a callable that filters |
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| 423 | * through items. If you typehint the item parameter in the callable, it will |
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| 424 | * only be applied to items of that type. |
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| 425 | * |
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| 426 | * @param callable|string $urlOrCallable |
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| 427 | * @param string $root |
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| 428 | * |
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| 429 | * @return $this |
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| 430 | */ |
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| 431 | public function setActive($urlOrCallable, string $root = '/') |
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| 443 | |||
| 444 | /** |
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| 445 | * Set all relevant children active based on the current request's URL. |
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| 446 | * |
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| 447 | * /, /about, /contact => request to /about will set the about link active. |
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| 448 | * |
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| 449 | * /en, /en/about, /en/contact => request to /en won't set /en active if the |
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| 450 | * request root is set to /en. |
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| 451 | * |
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| 452 | * @param string $url The current request url. |
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| 453 | * @param string $root If the link's URL is an exact match with the request |
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| 454 | * root, the link won't be set active. This behavior is |
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| 455 | * to avoid having home links active on every request. |
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| 456 | * |
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| 457 | * @return $this |
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| 458 | */ |
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| 459 | public function setActiveFromUrl(string $url, string $root = '/') |
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| 508 | |||
| 509 | /** |
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| 510 | * @param callable $callable |
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| 511 | * |
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| 512 | * @return $this |
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| 513 | */ |
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| 514 | public function setActiveFromCallable(callable $callable) |
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| 535 | |||
| 536 | /** |
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| 537 | * Set the class name that will be used on active items for this menu. |
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| 538 | * |
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| 539 | * @param string $class |
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| 540 | * |
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| 541 | * @return $this |
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| 542 | */ |
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| 543 | public function setActiveClass(string $class) |
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| 549 | |||
| 550 | /** |
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| 551 | * Add a class to all items in the menu. |
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| 552 | * |
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| 553 | * @param string $class |
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| 554 | * |
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| 555 | * @return $this |
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| 556 | */ |
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| 557 | public function addItemClass(string $class) |
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| 565 | |||
| 566 | /** |
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| 567 | * Set an attribute on all items in the menu. |
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| 568 | * |
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| 569 | * @param string $attribute |
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| 570 | * @param string $value |
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| 571 | * |
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| 572 | * @return $this |
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| 573 | */ |
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| 574 | public function setItemAttribute(string $attribute, string $value = '') |
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| 582 | |||
| 583 | /** |
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| 584 | * Add a parent class to all items in the menu. |
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| 585 | * |
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| 586 | * @param string $class |
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| 587 | * |
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| 588 | * @return $this |
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| 589 | */ |
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| 590 | public function addItemParentClass(string $class) |
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| 598 | |||
| 599 | /** |
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| 600 | * Add a parent attribute to all items in the menu. |
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| 601 | * |
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| 602 | * @param string $attribute |
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| 603 | * @param string $value |
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| 604 | * |
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| 605 | * @return $this |
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| 606 | */ |
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| 607 | public function setItemParentAttribute(string $attribute, string $value = '') |
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| 615 | |||
| 616 | /** |
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| 617 | * Create a empty blueprint of the menu (copies `filters` and `activeClass`). |
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| 618 | * |
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| 619 | * @return static |
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| 620 | */ |
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| 621 | public function blueprint() |
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| 630 | |||
| 631 | /** |
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| 632 | * Render the menu. |
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| 633 | * |
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| 634 | * @return string |
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| 635 | */ |
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| 636 | public function render(): string |
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| 658 | |||
| 659 | /** |
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| 660 | * The amount of items in the menu. |
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| 661 | * |
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| 662 | * @return int |
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| 663 | */ |
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| 664 | public function count(): int |
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| 668 | |||
| 669 | /** |
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| 670 | * @return string |
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| 671 | */ |
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| 672 | public function __toString(): string |
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| 676 | } |
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| 677 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.