Complex classes like Driver_Selenium 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 Driver_Selenium, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class Driver_Selenium extends Driver { |
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| 15 | |||
| 16 | /** |
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| 17 | * Driver name |
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| 18 | * @var string |
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| 19 | */ |
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| 20 | public $name = 'selenium'; |
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| 21 | |||
| 22 | /** |
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| 23 | * Array containing parameters to be added on the next request |
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| 24 | * @var array |
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| 25 | */ |
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| 26 | protected $_next_query = array(); |
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| 27 | |||
| 28 | /** |
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| 29 | * Variable holding the current Driver_Selenium_Connection |
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| 30 | * @var Driver_Selenium_Connection |
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| 31 | */ |
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| 32 | protected $_connection; |
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| 33 | |||
| 34 | /** |
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| 35 | * The base URL, to be prefixed on each request |
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| 36 | * @var string |
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| 37 | */ |
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| 38 | protected $_base_url = ''; |
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| 39 | |||
| 40 | /** |
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| 41 | * As selenium might be a bit slow to respond, we increase the default wait time. |
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| 42 | * @var integer |
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| 43 | */ |
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| 44 | public $default_wait_time = 4000; |
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| 45 | |||
| 46 | /** |
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| 47 | * Getter / Setter of the base_url, that will be prefixed on each request |
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| 48 | * @param string $base_url |
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| 49 | * @return string|Driver_PHantomjs |
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| 50 | */ |
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| 51 | 1 | public function base_url($base_url = NULL) |
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| 60 | |||
| 61 | /** |
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| 62 | * Clear the connection by deleting all cookies |
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| 63 | */ |
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| 64 | 1 | public function clear() |
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| 68 | |||
| 69 | /** |
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| 70 | * Getter of the raw content html, this driver does not allow "setting" |
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| 71 | * |
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| 72 | * @param string $content |
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| 73 | * @return string |
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| 74 | */ |
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| 75 | 1 | public function content($content = NULL) |
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| 79 | |||
| 80 | /** |
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| 81 | * Getter / Setter of the Driver_Selenium_Connection object. |
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| 82 | * Use this to customize the connection, otherwise a default one on a random port will be used |
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| 83 | * |
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| 84 | * @param Driver_Selenium_Connection $connection |
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| 85 | * @return Driver_Selenium_Connection|Driver_Selenium |
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| 86 | */ |
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| 87 | 2 | public function connection(Driver_Selenium_Connection $connection = NULL) |
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| 103 | |||
| 104 | /** |
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| 105 | * NODE GETTERS |
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| 106 | * ===================================== |
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| 107 | */ |
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| 108 | |||
| 109 | /** |
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| 110 | * Get the tag name of a Node with id. e.g. DIV, SPAN ... |
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| 111 | * @param string $id |
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| 112 | * @return string |
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| 113 | */ |
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| 114 | public function tag_name($id) |
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| 118 | |||
| 119 | /** |
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| 120 | * Get the attribute of a Node with id. If the attribute does not exist, returns NULL |
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| 121 | * @param string $id |
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| 122 | * @param string $name |
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| 123 | * @return string |
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| 124 | */ |
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| 125 | public function attribute($id, $name) |
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| 129 | |||
| 130 | /** |
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| 131 | * Return the raw html of a Node with id, along with all of its children. |
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| 132 | * @param string $id |
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| 133 | * @return string |
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| 134 | */ |
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| 135 | 1 | public function html($id) |
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| 142 | |||
| 143 | /** |
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| 144 | * Return the text of a Node with id, with all the spaces collapsed, similar to browser rendering. |
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| 145 | * @param string $id |
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| 146 | * @return string |
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| 147 | */ |
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| 148 | public function text($id) |
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| 154 | |||
| 155 | /** |
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| 156 | * Return the value of a Node of a form element, e.g. INPUT, TEXTAREA or SELECT |
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| 157 | * @param string $id |
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| 158 | * @return string |
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| 159 | */ |
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| 160 | 1 | public function value($id) |
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| 180 | |||
| 181 | /** |
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| 182 | * Check if a Node with id is visible. |
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| 183 | * @param string $id |
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| 184 | * @return boolean |
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| 185 | */ |
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| 186 | public function is_visible($id) |
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| 190 | |||
| 191 | /** |
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| 192 | * Check if a Node with id of an option element is selected |
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| 193 | * @param string $id |
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| 194 | * @return boolean |
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| 195 | */ |
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| 196 | public function is_selected($id) |
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| 200 | |||
| 201 | /** |
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| 202 | * Check if a Node with id of an input element (radio or checkbox) is checked |
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| 203 | * @param string $id |
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| 204 | * @return boolean |
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| 205 | */ |
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| 206 | public function is_checked($id) |
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| 210 | |||
| 211 | /** |
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| 212 | * Set the value of a Node with id of a form element |
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| 213 | * @param string $id |
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| 214 | * @param string $value |
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| 215 | */ |
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| 216 | public function set($id, $value) |
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| 246 | |||
| 247 | /** |
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| 248 | * Set the option value that is selected of a Node of a select element |
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| 249 | * @param string $id |
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| 250 | * @param string $value |
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| 251 | */ |
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| 252 | public function select_option($id, $value) |
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| 256 | |||
| 257 | /** |
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| 258 | * Confirm or cancel for the next confirmation dialog |
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| 259 | * @param bool $confirm |
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| 260 | */ |
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| 261 | 1 | public function confirm($confirm) |
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| 272 | |||
| 273 | /** |
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| 274 | * Get the text of the currently displayed alert / confirm /prompt dialog |
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| 275 | * @param bool $confirm |
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| 276 | */ |
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| 277 | public function alert_text() |
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| 281 | |||
| 282 | /** |
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| 283 | * Click on a Node with id, triggering a link or form submit |
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| 284 | * @param string $id |
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| 285 | */ |
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| 286 | public function click($id) |
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| 290 | |||
| 291 | /** |
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| 292 | * Go to a given url address, use next_query along with the provided query array |
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| 293 | * @param string $uri |
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| 294 | * @param array $query |
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| 295 | */ |
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| 296 | 1 | public function visit($uri, array $query = NULL) |
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| 313 | |||
| 314 | /** |
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| 315 | * Get the current path (without host and protocol) |
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| 316 | * @return string |
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| 317 | */ |
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| 318 | 1 | public function current_path() |
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| 324 | |||
| 325 | /** |
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| 326 | * Get the current url |
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| 327 | * @return string |
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| 328 | */ |
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| 329 | public function current_url() |
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| 333 | |||
| 334 | /** |
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| 335 | * Find all ids of a given XPath |
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| 336 | * @param string $xpath |
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| 337 | * @param string $parent id of the parent node |
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| 338 | * @return array |
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| 339 | */ |
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| 340 | 1 | public function all($xpath, $parent = NULL) |
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| 346 | |||
| 347 | /** |
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| 348 | * Setter for the next_query variable, to be added to the next visit's query |
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| 349 | * @param array $query |
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| 350 | */ |
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| 351 | 1 | public function next_query(array $query) |
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| 356 | |||
| 357 | /** |
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| 358 | * Execute raw javascript. it will be executed in the context of a given node ('this' will point to the node) and the return of the script will be the return of this method |
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| 359 | * @param string $id |
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| 360 | * @param string $script |
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| 361 | * @return mixed |
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| 362 | */ |
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| 363 | 2 | public function execute($id, $script) |
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| 370 | |||
| 371 | /** |
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| 372 | * Check if a connection is active |
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| 373 | * @return boolean |
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| 374 | */ |
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| 375 | public function is_page_active() |
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| 379 | |||
| 380 | /** |
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| 381 | * Move the mouse to a given element, or coordinates, or coordinates relative to a given element |
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| 382 | * @param string $id |
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| 383 | * @param integer $x |
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| 384 | * @param integer $y |
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| 385 | */ |
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| 386 | public function move_to($id = NULL, $x = NULL, $y = NULL) |
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| 397 | |||
| 398 | /** |
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| 399 | * Do a screenshot of the current page into a file |
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| 400 | * @param string $file |
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| 401 | */ |
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| 402 | 1 | public function screenshot($file) |
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| 408 | |||
| 409 | /** |
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| 410 | * Return all the current cookies |
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| 411 | * @return array |
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| 412 | */ |
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| 413 | public function cookies() |
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| 417 | |||
| 418 | /** |
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| 419 | * Set a cookie. Use parameters to set "expiry", "path", "domain" and "secure" |
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| 420 | * @param string $name |
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| 421 | * @param mixed $value |
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| 422 | * @param array $parameters |
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| 423 | */ |
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| 424 | 1 | public function cookie($name, $value, array $parameters = array()) |
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| 434 | } |
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| 435 |
It seems like the method you are trying to call exists only in some of the possible types.
Let’s take a look at an example:
Available Fixes
Add an additional type-check:
Only allow a single type to be passed if the variable comes from a parameter: