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_EU_Cookie_Law_Widget 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_EU_Cookie_Law_Widget, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 18 | class Jetpack_EU_Cookie_Law_Widget extends WP_Widget { |
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| 19 | /** |
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| 20 | * EU Cookie Law cookie name. |
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| 21 | * |
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| 22 | * @var string |
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| 23 | */ |
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| 24 | public static $cookie_name = 'eucookielaw'; |
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| 25 | |||
| 26 | /** |
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| 27 | * Default hide options. |
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| 28 | * |
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| 29 | * @var array |
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| 30 | */ |
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| 31 | private $hide_options = array( |
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| 32 | 'button', |
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| 33 | 'scroll', |
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| 34 | 'time', |
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| 35 | ); |
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| 36 | |||
| 37 | /** |
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| 38 | * Default text options. |
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| 39 | * |
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| 40 | * @var array |
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| 41 | */ |
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| 42 | private $text_options = array( |
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| 43 | 'default', |
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| 44 | 'custom', |
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| 45 | ); |
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| 46 | |||
| 47 | /** |
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| 48 | * Default color scheme options. |
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| 49 | * |
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| 50 | * @var array |
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| 51 | */ |
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| 52 | private $color_scheme_options = array( |
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| 53 | 'default', |
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| 54 | 'negative', |
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| 55 | ); |
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| 56 | |||
| 57 | /** |
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| 58 | * Default policy URL options. |
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| 59 | * |
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| 60 | * @var array |
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| 61 | */ |
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| 62 | private $policy_url_options = array( |
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| 63 | 'default', |
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| 64 | 'custom', |
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| 65 | ); |
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| 66 | |||
| 67 | /** |
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| 68 | * Widget position options. |
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| 69 | * |
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| 70 | * @var array |
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| 71 | */ |
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| 72 | private $position_options = array( |
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| 73 | 'bottom', |
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| 74 | 'top', |
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| 75 | ); |
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| 76 | |||
| 77 | /** |
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| 78 | * Constructor. |
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| 79 | */ |
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| 80 | View Code Duplication | function __construct() { |
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| 96 | |||
| 97 | /** |
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| 98 | * Enqueue scripts and styles. |
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| 99 | */ |
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| 100 | function enqueue_frontend_scripts() { |
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| 101 | wp_enqueue_style( 'eu-cookie-law-style', plugins_url( 'eu-cookie-law/style.css', __FILE__ ), array(), JETPACK__VERSION ); |
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| 102 | |||
| 103 | if ( ! class_exists( 'Jetpack_AMP_Support' ) || ! Jetpack_AMP_Support::is_amp_request() ) { |
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| 104 | wp_enqueue_script( |
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| 105 | 'eu-cookie-law-script', |
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| 106 | Assets::get_file_url_for_environment( |
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| 107 | '_inc/build/widgets/eu-cookie-law/eu-cookie-law.min.js', |
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| 108 | 'modules/widgets/eu-cookie-law/eu-cookie-law.js' |
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| 109 | ), |
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| 110 | array(), |
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| 111 | '20180522', |
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| 112 | true |
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| 113 | ); |
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| 114 | } |
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| 115 | } |
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| 116 | |||
| 117 | /** |
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| 118 | * Return an associative array of default values. |
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| 119 | * |
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| 120 | * These values are used in new widgets. |
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| 121 | * |
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| 122 | * @return array Default values for the widget options. |
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| 123 | */ |
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| 124 | public function defaults() { |
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| 141 | |||
| 142 | /** |
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| 143 | * Front-end display of the widget. |
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| 144 | * |
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| 145 | * @param array $args Widget arguments. |
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| 146 | * @param array $instance Saved values from database. |
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| 147 | */ |
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| 148 | public function widget( $args, $instance ) { |
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| 149 | /** |
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| 150 | * Filters the display of the EU Cookie Law widget. |
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| 151 | * |
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| 152 | * @since 6.1.1 |
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| 153 | * |
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| 154 | * @param bool true Should the EU Cookie Law widget be disabled. Default to false. |
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| 155 | */ |
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| 156 | if ( apply_filters( 'jetpack_disable_eu_cookie_law_widget', false ) ) { |
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| 157 | return; |
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| 158 | } |
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| 159 | |||
| 160 | $instance = wp_parse_args( $instance, $this->defaults() ); |
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|
|
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| 161 | |||
| 162 | if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) { |
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| 163 | require dirname( __FILE__ ) . '/eu-cookie-law/widget-amp.php'; |
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| 164 | return; |
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| 165 | } |
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| 166 | |||
| 167 | $classes = array(); |
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| 168 | $classes['hide'] = 'hide-on-' . esc_attr( $instance['hide'] ); |
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| 169 | if ( 'negative' === $instance['color-scheme'] ) { |
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| 170 | $classes['negative'] = 'negative'; |
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| 171 | } |
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| 172 | |||
| 173 | if ( 'top' === $instance['position'] ) { |
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| 174 | $classes['top'] = 'top'; |
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| 175 | } |
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| 176 | |||
| 177 | if ( Jetpack::is_module_active( 'wordads' ) ) { |
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| 178 | $classes['ads'] = 'ads-active'; |
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| 179 | $classes['hide'] = 'hide-on-button'; |
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| 180 | } |
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| 181 | |||
| 182 | echo $args['before_widget']; |
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| 183 | require( dirname( __FILE__ ) . '/eu-cookie-law/widget.php' ); |
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| 184 | echo $args['after_widget']; |
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| 185 | /** This action is already documented in modules/widgets/gravatar-profile.php */ |
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| 186 | do_action( 'jetpack_stats_extra', 'widget_view', 'eu_cookie_law' ); |
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| 187 | } |
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| 188 | |||
| 189 | /** |
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| 190 | * Back-end widget form. |
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| 191 | * |
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| 192 | * @param array $instance Previously saved values from database. |
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| 193 | */ |
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| 194 | public function form( $instance ) { |
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| 212 | |||
| 213 | /** |
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| 214 | * Sanitize widget form values as they are saved. |
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| 215 | * |
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| 216 | * @param array $new_instance Values just sent to be saved. |
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| 217 | * @param array $old_instance Previously saved values from database. |
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| 218 | * @return array Updated safe values to be saved. |
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| 219 | */ |
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| 220 | public function update( $new_instance, $old_instance ) { |
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| 287 | |||
| 288 | /** |
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| 289 | * Check if the value is allowed and not empty. |
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| 290 | * |
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| 291 | * @param string $value Value to check. |
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| 292 | * @param array $allowed Array of allowed values. |
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| 293 | * |
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| 294 | * @return string $value if pass the check or first value from allowed values. |
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| 295 | */ |
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| 296 | View Code Duplication | function filter_value( $value, $allowed = array() ) { |
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| 303 | } |
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| 304 | |||
| 305 | // Register Jetpack_EU_Cookie_Law_Widget widget. |
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| 312 |
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: