Complex classes like Plugin 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 Plugin, and based on these observations, apply Extract Interface, too.
1 | <?php |
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18 | final class Plugin { |
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19 | |||
20 | /** |
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21 | * @since 2.0 |
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22 | * @api |
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23 | * @var string The plugin version. |
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24 | * |
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25 | */ |
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26 | public static $version = GV_PLUGIN_VERSION; |
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27 | |||
28 | /** |
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29 | * @var string Minimum WordPress version. |
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30 | * |
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31 | * GravityView requires at least this version of WordPress to function properly. |
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32 | */ |
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33 | private static $min_wp_version = GV_MIN_WP_VERSION; |
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34 | |||
35 | /** |
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36 | * @var string Minimum WordPress version. |
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37 | * |
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38 | * @since 2.9.3 |
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39 | * |
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40 | * GravityView will require this version of WordPress soon. |
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41 | */ |
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42 | private static $future_min_wp_version = GV_FUTURE_MIN_WP_VERSION; |
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43 | |||
44 | /** |
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45 | * @var string Minimum Gravity Forms version. |
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46 | * |
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47 | * GravityView requires at least this version of Gravity Forms to function properly. |
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48 | */ |
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49 | public static $min_gf_version = GV_MIN_GF_VERSION; |
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50 | |||
51 | /** |
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52 | * @var string Minimum PHP version. |
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53 | * |
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54 | * GravityView requires at least this version of PHP to function properly. |
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55 | */ |
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56 | private static $min_php_version = GV_MIN_PHP_VERSION; |
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57 | |||
58 | /** |
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59 | * @var string|bool Minimum future PHP version. |
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60 | * |
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61 | * GravityView will require this version of PHP soon. False if no future PHP version changes are planned. |
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62 | */ |
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63 | private static $future_min_php_version = GV_FUTURE_MIN_PHP_VERSION; |
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64 | |||
65 | /** |
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66 | * @var string|bool Minimum future Gravity Forms version. |
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67 | * |
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68 | * GravityView will require this version of Gravity Forms soon. False if no future Gravity Forms version changes are planned. |
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69 | */ |
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70 | private static $future_min_gf_version = GV_FUTURE_MIN_GF_VERSION; |
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71 | |||
72 | /** |
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73 | * @var \GV\Plugin The \GV\Plugin static instance. |
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74 | */ |
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75 | private static $__instance = null; |
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76 | |||
77 | /** |
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78 | * @since 2.0 |
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79 | * @api |
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80 | * @var \GV\Addon_Settings The plugin "addon" settings. |
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81 | * |
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82 | */ |
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83 | public $settings; |
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84 | |||
85 | /** |
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86 | * @var string The GFQuery functionality identifier. |
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87 | */ |
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88 | const FEATURE_GFQUERY = 'gfquery'; |
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89 | |||
90 | /** |
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91 | * @var string The joins functionality identifier. |
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92 | */ |
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93 | const FEATURE_JOINS = 'joins'; |
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94 | |||
95 | /** |
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96 | * @var string The unions functionality identifier. |
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97 | */ |
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98 | const FEATURE_UNIONS = 'unions'; |
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99 | |||
100 | /** |
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101 | * @var string The REST API functionality identifier. |
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102 | */ |
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103 | const FEATURE_REST = 'rest_api'; |
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104 | |||
105 | /** |
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106 | * Get the global instance of \GV\Plugin. |
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107 | * |
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108 | * @return \GV\Plugin The global instance of GravityView Plugin. |
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109 | */ |
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110 | public static function get() { |
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118 | |||
119 | private function __construct() { |
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136 | |||
137 | public function load_license_settings() { |
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148 | |||
149 | /** |
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150 | * Check whether Gravity Forms is v2.5-beta or newer |
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151 | * |
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152 | * @return bool |
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153 | * @todo add @since |
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154 | * |
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155 | */ |
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156 | public function is_GF_25() { |
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160 | |||
161 | /** |
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162 | * Check whether GravityView `is network activated. |
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163 | * |
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164 | * @return bool Whether it's network activated or not. |
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165 | */ |
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166 | public static function is_network_activated() { |
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172 | |||
173 | /** |
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174 | * Include more legacy stuff. |
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175 | * |
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176 | * @param boolean $force Whether to force the includes. |
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177 | * |
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178 | * @return void |
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179 | */ |
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180 | public function include_legacy_frontend( $force = false ) { |
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201 | |||
202 | /** |
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203 | * Load more legacy core files. |
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204 | * |
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205 | * @return void |
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206 | */ |
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207 | public function include_legacy_core() { |
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269 | |||
270 | /** |
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271 | * Load the translations. |
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272 | * |
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273 | * Order of look-ups: |
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274 | * |
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275 | * 1. /wp-content/languages/plugins/gravityview-{locale}.mo (loaded by WordPress Core) |
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276 | * 2. /wp-content/mu-plugins/gravityview-{locale}.mo |
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277 | * 3. /wp-content/mu-plugins/languages/gravityview-{locale}.mo |
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278 | * 4. /wp-content/plugins/gravityview/languages/gravityview-{locale}.mo |
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279 | * |
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280 | * @return void |
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281 | */ |
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282 | public function load_textdomain() { |
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318 | |||
319 | /** |
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320 | 1 | * Register hooks that are fired when the plugin is activated and deactivated. |
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321 | * |
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322 | 1 | * @return void |
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323 | */ |
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324 | public function register_activation_hooks() { |
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329 | |||
330 | 1 | /** |
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331 | 1 | * Plugin activation function. |
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332 | * |
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333 | * @return void |
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334 | * @internal |
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335 | */ |
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336 | public function activate() { |
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365 | 1 | ||
366 | /** |
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367 | 1 | * Plugin deactivation function. |
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368 | * |
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369 | 1 | * @return void |
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370 | * @internal |
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371 | */ |
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372 | public function deactivate() { |
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376 | |||
377 | /** |
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378 | * Retrieve an absolute path within the GravityView plugin directory. |
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379 | * |
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380 | * @since 2.0 |
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381 | 1 | * |
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382 | 1 | * @param string $path Optional. Append this extra path component. |
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383 | * @return string The absolute path to the plugin directory. |
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384 | * @api |
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385 | */ |
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386 | public function dir( $path = '' ) { |
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390 | |||
391 | /** |
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392 | * Retrieve a relative path to the GravityView plugin directory from the WordPress plugin directory |
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393 | 5 | * |
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394 | * @since 2.2.3 |
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395 | 5 | * |
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396 | 5 | * @param string $path Optional. Append this extra path component. |
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397 | 5 | * @return string The relative path to the plugin directory from the plugin directory. |
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398 | * @api |
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399 | */ |
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400 | public function relpath( $path = '' ) { |
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406 | |||
407 | /** |
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408 | 5 | * Retrieve a URL within the GravityView plugin directory. |
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409 | 5 | * |
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410 | * @since 2.0 |
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411 | * |
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412 | * @param string $path Optional. Extra path appended to the URL. |
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413 | * @return string The URL to this plugin, with trailing slash. |
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414 | * @api |
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415 | */ |
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416 | public function url( $path = '/' ) { |
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420 | |||
421 | /** |
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422 | * Is everything compatible with this version of GravityView? |
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423 | * |
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424 | * @since 2.0 |
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425 | * |
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426 | * @return bool |
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427 | * @api |
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428 | */ |
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429 | public function is_compatible() { |
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436 | 5 | ||
437 | 5 | /** |
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438 | * Is this version of GravityView compatible with the current version of PHP? |
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439 | * |
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440 | 5 | * @since 2.0 |
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441 | * |
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442 | * @return bool true if compatible, false otherwise. |
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443 | * @api |
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444 | */ |
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445 | public function is_compatible_php() { |
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449 | |||
450 | /** |
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451 | 5 | * Is this version of GravityView compatible with the future required version of PHP? |
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452 | 5 | * |
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453 | 5 | * @since 2.0 |
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454 | * |
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455 | * @return bool true if compatible, false otherwise. |
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456 | * @api |
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457 | */ |
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458 | public function is_compatible_future_php() { |
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462 | |||
463 | /** |
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464 | * Is this version of GravityView compatible with the current version of WordPress? |
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465 | * |
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466 | * @since 2.0 |
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467 | * |
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468 | * @param string $version Version to check against; otherwise uses GV_MIN_WP_VERSION |
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469 | * |
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470 | * @return bool true if compatible, false otherwise. |
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471 | * @api |
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472 | */ |
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473 | public function is_compatible_wordpress( $version = null ) { |
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481 | |||
482 | /** |
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483 | * Is this version of GravityView compatible with the future version of WordPress? |
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484 | * |
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485 | * @since 2.9.3 |
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486 | * |
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487 | * @return bool true if compatible, false otherwise |
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488 | 4 | * @api |
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489 | 4 | */ |
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490 | 4 | public function is_compatible_future_wordpress() { |
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496 | |||
497 | /** |
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498 | * Is this version of GravityView compatible with the current version of Gravity Forms? |
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499 | * |
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500 | 4 | * @since 2.0 |
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501 | 4 | * |
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502 | * @return bool true if compatible, false otherwise (or not active/installed). |
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503 | * @api |
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504 | */ |
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505 | public function is_compatible_gravityforms() { |
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511 | |||
512 | /** |
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513 | * Is this version of GravityView compatible with the future version of Gravity Forms? |
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514 | * |
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515 | * @since 2.0 |
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516 | * |
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517 | 194 | * @return bool true if compatible, false otherwise (or not active/installed). |
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518 | 194 | * @api |
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519 | */ |
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520 | public function is_compatible_future_gravityforms() { |
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526 | 194 | ||
527 | 181 | /** |
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528 | 194 | * Retrieve the current PHP version. |
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529 | 194 | * |
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530 | * Overridable with GRAVITYVIEW_TESTS_PHP_VERSION_OVERRIDE during testing. |
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531 | * |
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532 | * @return string The version of PHP. |
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533 | */ |
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534 | private function get_php_version() { |
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539 | |||
540 | /** |
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541 | * Retrieve the current WordPress version. |
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542 | * |
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543 | * Overridable with GRAVITYVIEW_TESTS_WP_VERSION_OVERRIDE during testing. |
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544 | * |
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545 | * @return string The version of WordPress. |
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546 | */ |
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547 | private function get_wordpress_version() { |
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552 | |||
553 | /** |
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554 | * Retrieve the current Gravity Forms version. |
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555 | * |
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556 | * Overridable with GRAVITYVIEW_TESTS_GF_VERSION_OVERRIDE during testing. |
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557 | * |
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558 | * @return string|null The version of Gravity Forms or null if inactive. |
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559 | */ |
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560 | private function get_gravityforms_version() { |
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571 | |||
572 | /** |
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573 | * Feature support detection. |
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574 | * |
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575 | * @param string $feature Feature name. Check FEATURE_* class constants. |
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576 | * |
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577 | * @return boolean |
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578 | */ |
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579 | public function supports( $feature ) { |
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597 | |||
598 | /** |
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599 | * Delete GravityView Views, settings, roles, caps, etc. |
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600 | * |
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601 | * @return void |
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602 | */ |
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603 | public function uninstall() { |
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688 | |||
689 | private function __clone() { |
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691 | |||
692 | private function __wakeup() { |
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694 | } |
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695 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: