dnadesign /
silverstripe-elemental
| Total Complexity | 42 |
| Total Lines | 237 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like ElementalAreasExtension 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.
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 ElementalAreasExtension, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 44 | class ElementalAreasExtension extends DataExtension |
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| 45 | { |
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| 46 | /** |
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| 47 | * @config |
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| 48 | * |
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| 49 | * @var array $ignored_classes Classes to ignore adding elements too. |
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| 50 | */ |
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| 51 | private static $ignored_classes = []; |
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| 52 | |||
| 53 | /** |
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| 54 | * @config |
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| 55 | * |
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| 56 | * On saving the element area, should Elemental reset the main website |
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| 57 | * `$Content` field. |
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| 58 | * |
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| 59 | * @var boolean |
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| 60 | */ |
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| 61 | private static $clear_contentfield = false; |
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| 62 | |||
| 63 | /** |
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| 64 | * Get the available element types for this page type, |
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| 65 | * |
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| 66 | * Uses allowed_elements, stop_element_inheritance, disallowed_elements in |
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| 67 | * order to get to correct list. |
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| 68 | * |
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| 69 | * @return array |
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| 70 | */ |
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| 71 | public function getElementalTypes() |
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| 72 | { |
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| 73 | $config = $this->owner->config(); |
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| 74 | |||
| 75 | if (is_array($config->get('allowed_elements'))) { |
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| 76 | if ($config->get('stop_element_inheritance')) { |
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| 77 | $availableClasses = $config->get('allowed_elements', Config::UNINHERITED); |
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| 78 | } else { |
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| 79 | $availableClasses = $config->get('allowed_elements'); |
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| 80 | } |
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| 81 | } else { |
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| 82 | $availableClasses = ClassInfo::subclassesFor(BaseElement::class); |
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| 83 | } |
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| 84 | |||
| 85 | if ($config->get('stop_element_inheritance')) { |
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| 86 | $disallowedElements = (array) $config->get('disallowed_elements', Config::UNINHERITED); |
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| 87 | } else { |
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| 88 | $disallowedElements = (array) $config->get('disallowed_elements'); |
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| 89 | } |
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| 90 | $list = array(); |
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| 91 | |||
| 92 | foreach ($availableClasses as $availableClass) { |
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| 93 | /** @var BaseElement $inst */ |
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| 94 | $inst = singleton($availableClass); |
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| 95 | |||
| 96 | if (!in_array($availableClass, $disallowedElements) && $inst->canCreate()) { |
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| 97 | if ($inst->hasMethod('canCreateElement') && !$inst->canCreateElement()) { |
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| 98 | continue; |
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| 99 | } |
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| 100 | |||
| 101 | $list[$availableClass] = $inst->getType(); |
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| 102 | } |
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| 103 | } |
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| 104 | |||
| 105 | if ($config->get('sort_types_alphabetically') !== false) { |
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| 106 | asort($list); |
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| 107 | } |
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| 108 | |||
| 109 | if (isset($list[BaseElement::class])) { |
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| 110 | unset($list[BaseElement::class]); |
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| 111 | } |
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| 112 | |||
| 113 | $this->owner->invokeWithExtensions('updateAvailableTypesForClass', $class, $list); |
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| 114 | |||
| 115 | return $list; |
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| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * Returns an array of the relation names to ElementAreas. Ignores any |
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| 120 | * has_one fields named `Parent` as that would indicate that this is child |
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| 121 | * of an existing area |
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| 122 | * |
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| 123 | * @return array |
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| 124 | */ |
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| 125 | public function getElementalRelations() |
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| 126 | { |
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| 127 | $hasOnes = $this->owner->hasOne(); |
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| 128 | |||
| 129 | if (!$hasOnes) { |
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| 130 | return false; |
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| 131 | } |
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| 132 | |||
| 133 | $elementalAreaRelations = []; |
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| 134 | |||
| 135 | foreach ($hasOnes as $hasOneName => $hasOneClass) { |
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| 136 | if ($hasOneName === 'Parent' || $hasOneName === 'ParentID') { |
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| 137 | continue; |
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| 138 | } |
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| 139 | |||
| 140 | if ($hasOneClass == ElementalArea::class || is_subclass_of($hasOneClass, ElementalArea::class)) { |
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| 141 | $elementalAreaRelations[] = $hasOneName; |
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| 142 | } |
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| 143 | } |
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| 144 | |||
| 145 | return $elementalAreaRelations; |
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| 146 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * Setup the CMS Fields |
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| 150 | * |
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| 151 | * @param FieldList |
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| 152 | */ |
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| 153 | public function updateCMSFields(FieldList $fields) |
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| 154 | { |
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| 155 | if (!$this->supportsElemental()) { |
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| 156 | return; |
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| 157 | } |
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| 158 | |||
| 159 | // add an empty holder for content as some module explicitly use insert |
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| 160 | // after content. |
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| 161 | $fields->replaceField('Content', new LiteralField('Content', '')); |
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| 162 | $elementalAreaRelations = $this->owner->getElementalRelations(); |
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| 163 | |||
| 164 | foreach ($elementalAreaRelations as $eaRelationship) { |
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| 165 | $key = $eaRelationship . 'ID'; |
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| 166 | |||
| 167 | // remove the scaffold dropdown |
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| 168 | $fields->removeByName($key); |
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| 169 | |||
| 170 | // remove the field, but don't add anything. |
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| 171 | if (!$this->owner->isInDb()) { |
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| 172 | continue; |
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| 173 | } |
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| 174 | |||
| 175 | // Example: $eaRelationship = 'ElementalArea'; |
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| 176 | $area = $this->owner->$eaRelationship(); |
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| 177 | |||
| 178 | $editor = ElementalAreaField::create($eaRelationship, $area, $this->getElementalTypes()); |
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| 179 | |||
| 180 | if ($this->owner instanceof SiteTree && $fields->findOrMakeTab('Root.Main')->fieldByName('Metadata')) { |
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| 181 | $fields->addFieldToTab('Root.Main', $editor, 'Metadata'); |
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| 182 | } else { |
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| 183 | $fields->addFieldToTab('Root.Main', $editor); |
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| 184 | } |
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| 185 | } |
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| 186 | |||
| 187 | return $fields; |
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| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * Make sure there is always an ElementalArea for adding Elements |
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| 192 | */ |
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| 193 | public function onBeforeWrite() |
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| 207 | } |
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| 208 | } |
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| 209 | |||
| 210 | /** |
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| 211 | * @return boolean |
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| 212 | */ |
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| 213 | public function supportsElemental() |
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| 214 | { |
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| 215 | if ($this->owner->hasMethod('includeElemental')) { |
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| 216 | $res = $this->owner->includeElemental(); |
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| 217 | |||
| 218 | if ($res !== null) { |
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| 219 | return $res; |
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| 220 | } |
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| 221 | } |
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| 222 | |||
| 223 | if (is_a($this->owner, RedirectorPage::class) || is_a($this->owner, VirtualPage::class)) { |
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| 224 | return false; |
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| 225 | } elseif ($ignored = Config::inst()->get(ElementalPageExtension::class, 'ignored_classes')) { |
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| 226 | foreach ($ignored as $check) { |
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| 227 | if (is_a($this->owner, $check)) { |
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| 228 | return false; |
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| 229 | } |
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| 230 | } |
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| 231 | } |
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| 232 | |||
| 233 | return true; |
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| 234 | } |
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| 235 | |||
| 236 | /** |
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| 237 | * Set all has_one relationships to an ElementalArea to a valid ID if they're unset |
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| 238 | * |
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| 239 | * @param array $elementalAreaRelations indexed array of relationship names that are to ElementalAreas |
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| 240 | * @return DataObject |
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| 241 | */ |
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| 242 | public function ensureElementalAreasExist($elementalAreaRelations) |
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| 243 | { |
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| 244 | foreach ($elementalAreaRelations as $eaRelationship) { |
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| 245 | $areaID = $eaRelationship . 'ID'; |
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| 246 | |||
| 247 | if (!$this->owner->$areaID) { |
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| 248 | $area = ElementalArea::create(); |
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| 249 | $area->OwnerClassName = get_class($this->owner); |
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| 250 | $area->write(); |
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| 251 | $this->owner->$areaID = $area->ID; |
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| 252 | } |
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| 253 | } |
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| 254 | return $this->owner; |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * Extension hook {@see DataObject::requireDefaultRecords} |
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| 259 | * |
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| 260 | * @return void |
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| 261 | */ |
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| 262 | public function requireDefaultRecords() |
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| 281 | } |
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| 282 | } |
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| 283 | } |
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| 284 |
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