Complex classes like contacts 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 contacts, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 12 | abstract class contacts  | 
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| 13 | { | 
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| 14 | /** @var \phpbb\auth\auth */  | 
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| 15 | protected $auth;  | 
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| 16 | |||
| 17 | /** @var \phpbb\config\config */  | 
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| 18 | protected $config;  | 
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| 19 | |||
| 20 | /** @var \phpbb\language\language */  | 
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| 21 | protected $translator;  | 
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| 22 | |||
| 23 | /** @var \phpbb\user */  | 
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| 24 | protected $user;  | 
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| 25 | |||
| 26 | /** @var string */  | 
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| 27 | protected $phpbb_root_path;  | 
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| 28 | |||
| 29 | /** @var string */  | 
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| 30 | protected $php_ext;  | 
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| 31 | |||
| 32 | /** @var bool */  | 
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| 33 | protected $mailto_allowed;  | 
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| 34 | |||
| 35 | /** @var bool */  | 
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| 36 | protected $email_form_allowed;  | 
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| 37 | |||
| 38 | /**  | 
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| 39 | * Constructor  | 
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| 40 | *  | 
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| 41 | * @param \phpbb\auth\auth $auth Auth object  | 
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| 42 | * @param \phpbb\config\config $config Config object  | 
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| 43 | * @param \phpbb\language\language $translator Language object  | 
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| 44 | * @param \phpbb\user $user User Object  | 
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| 45 | * @param string $phpbb_root_path Path to the phpbb includes directory.  | 
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| 46 | * @param string $php_ext php file extension  | 
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| 47 | */  | 
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| 48 | 88 | public function __construct(\phpbb\auth\auth $auth, \phpbb\config\config $config, \phpbb\language\language $translator, \phpbb\user $user, $phpbb_root_path, $php_ext)  | 
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| 60 | |||
| 61 | /**  | 
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| 62 | * @param array $row  | 
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| 63 | * @return array  | 
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| 64 | */  | 
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| 65 | 8 | protected function get_email_contact(array $row)  | 
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| 79 | |||
| 80 | /**  | 
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| 81 | * @param array $row  | 
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| 82 | * @return bool  | 
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| 83 | */  | 
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| 84 | 8 | protected function user_email_allowed(array $row)  | 
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| 88 | |||
| 89 | /**  | 
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| 90 | * @param array $row  | 
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| 91 | * @return string  | 
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| 92 | */  | 
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| 93 | 8 | protected function get_email_url(array $row)  | 
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| 97 | |||
| 98 | /**  | 
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| 99 | * @return bool  | 
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| 100 | */  | 
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| 101 | 88 | protected function get_email_form_allowed()  | 
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| 105 | |||
| 106 | /**  | 
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| 107 | * @return bool  | 
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| 108 | */  | 
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| 109 | 88 | protected function get_mailto_allowed()  | 
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| 113 | |||
| 114 | /**  | 
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| 115 | * @param array $row  | 
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| 116 | * @return array  | 
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| 117 | */  | 
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| 118 | 8 | protected function get_jabber_contact(array $row)  | 
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| 132 | |||
| 133 | /**  | 
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| 134 | * @param array $row  | 
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| 135 | * @return bool  | 
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| 136 | */  | 
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| 137 | 8 | protected function user_can_jabber(array $row)  | 
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| 141 | |||
| 142 | /**  | 
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| 143 | * @param array $row  | 
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| 144 | * @param array $can_receive_pm_list  | 
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| 145 | * @param array $permanently_banned_users  | 
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| 146 | * @return array  | 
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| 147 | */  | 
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| 148 | 8 | protected function get_pm_contact(array $row, array $can_receive_pm_list, array $permanently_banned_users)  | 
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| 162 | |||
| 163 | /**  | 
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| 164 | * @return bool  | 
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| 165 | */  | 
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| 166 | 8 | protected function user_can_pm()  | 
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| 170 | |||
| 171 | /**  | 
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| 172 | * @param array $row  | 
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| 173 | * @param array $can_receive_pm_list  | 
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| 174 | * @param array $permanently_banned_users  | 
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| 175 | * @return bool  | 
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| 176 | */  | 
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| 177 | 8 | protected function can_receive_pm(array $row, array $can_receive_pm_list, array $permanently_banned_users)  | 
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| 196 | |||
| 197 | /**  | 
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| 198 | * Get the list of users who can receive private messages  | 
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| 199 | *  | 
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| 200 | * @param array $user_ids  | 
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| 201 | * @return array  | 
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| 202 | */  | 
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| 203 | 8 | protected function get_can_receive_pm_list(array $user_ids)  | 
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| 208 | |||
| 209 | /**  | 
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| 210 | * Get the list of permanently banned users  | 
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| 211 | *  | 
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| 212 | * @param array $user_ids  | 
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| 213 | * @return array  | 
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| 214 | */  | 
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| 215 | 8 | protected function get_banned_users_list(array $user_ids)  | 
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| 224 | }  | 
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| 225 |