silverstripe /
silverstripe-cms
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 AssetAdmin 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 AssetAdmin, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 12 | class AssetAdmin extends LeftAndMain implements PermissionProvider{ |
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| 13 | |||
| 14 | private static $url_segment = 'assets'; |
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| 15 | |||
| 16 | private static $url_rule = '/$Action/$ID'; |
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| 17 | |||
| 18 | private static $menu_title = 'Files'; |
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| 19 | |||
| 20 | private static $tree_class = 'Folder'; |
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| 21 | |||
| 22 | /** |
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| 23 | * Amount of results showing on a single page. |
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| 24 | * |
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| 25 | * @config |
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| 26 | * @var int |
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| 27 | */ |
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| 28 | private static $page_length = 15; |
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| 29 | |||
| 30 | /** |
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| 31 | * @config |
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| 32 | * @see Upload->allowedMaxFileSize |
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| 33 | * @var int |
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| 34 | */ |
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| 35 | private static $allowed_max_file_size; |
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| 36 | |||
| 37 | private static $allowed_actions = array( |
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| 38 | 'addfolder', |
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| 39 | 'delete', |
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| 40 | 'AddForm', |
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| 41 | 'SearchForm', |
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| 42 | 'getsubtree' |
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| 43 | ); |
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| 44 | |||
| 45 | /** |
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| 46 | * Return fake-ID "root" if no ID is found (needed to upload files into the root-folder) |
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| 47 | */ |
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| 48 | public function currentPageID() { |
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| 59 | |||
| 60 | /** |
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| 61 | * Set up the controller |
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| 62 | */ |
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| 63 | public function init() { |
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| 64 | parent::init(); |
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| 65 | |||
| 66 | Versioned::set_stage(Versioned::DRAFT); |
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| 67 | |||
| 68 | Requirements::javascript(CMS_DIR . "/client/dist/js/AssetAdmin.js"); |
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| 69 | Requirements::add_i18n_javascript(CMS_DIR . '/client/src/lang', false, true); |
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| 70 | Requirements::css(CMS_DIR . '/client/dist/styles/bundle.css'); |
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| 71 | CMSBatchActionHandler::register('delete', 'AssetAdmin_DeleteBatchAction', 'Folder'); |
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| 72 | } |
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| 73 | |||
| 74 | /** |
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| 75 | * Returns the files and subfolders contained in the currently selected folder, |
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| 76 | * defaulting to the root node. Doubles as search results, if any search parameters |
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| 77 | * are set through {@link SearchForm()}. |
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| 78 | * |
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| 79 | * @return SS_List |
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| 80 | */ |
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| 81 | public function getList() { |
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| 137 | |||
| 138 | public function getEditForm($id = null, $fields = null) { |
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| 139 | Requirements::javascript(FRAMEWORK_DIR . '/client/dist/js/AssetUploadField.js'); |
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| 140 | Requirements::css(FRAMEWORK_DIR . '/client/dist/styles/AssetUploadField.css'); |
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| 141 | |||
| 142 | $form = parent::getEditForm($id, $fields); |
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| 143 | $folder = ($id && is_numeric($id)) ? DataObject::get_by_id('Folder', $id, false) : $this->currentPage(); |
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| 144 | $fields = $form->Fields(); |
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| 145 | $title = ($folder && $folder->isInDB()) ? $folder->Title : _t('AssetAdmin.FILES', 'Files'); |
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| 146 | $fields->push(new HiddenField('ID', false, $folder ? $folder->ID : null)); |
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| 147 | |||
| 148 | // File listing |
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| 149 | $gridFieldConfig = GridFieldConfig::create()->addComponents( |
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| 150 | new GridFieldToolbarHeader(), |
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| 151 | new GridFieldSortableHeader(), |
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| 152 | new GridFieldFilterHeader(), |
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| 153 | new GridFieldDataColumns(), |
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| 154 | new GridFieldPaginator(self::config()->page_length), |
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| 155 | new GridFieldEditButton(), |
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| 156 | new GridFieldDeleteAction(), |
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| 157 | new GridFieldDetailForm(), |
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| 158 | GridFieldLevelup::create($folder->ID)->setLinkSpec('admin/assets/show/%d') |
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| 159 | ); |
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| 160 | |||
| 161 | $gridField = GridField::create('File', $title, $this->getList(), $gridFieldConfig); |
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| 162 | $columns = $gridField->getConfig()->getComponentByType('GridFieldDataColumns'); |
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| 163 | $columns->setDisplayFields(array( |
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| 164 | 'StripThumbnail' => '', |
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| 165 | 'Title' => _t('File.Title', 'Title'), |
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| 166 | 'Created' => _t('AssetAdmin.CREATED', 'Date'), |
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| 167 | 'Size' => _t('AssetAdmin.SIZE', 'Size'), |
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| 168 | )); |
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| 169 | $columns->setFieldCasting(array( |
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| 170 | 'Created' => 'SS_Datetime->Nice' |
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| 171 | )); |
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| 172 | $gridField->setAttribute( |
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| 173 | 'data-url-folder-template', |
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| 174 | Controller::join_links($this->Link('show'), '%s') |
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| 175 | ); |
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| 176 | |||
| 177 | if(!$folder->hasMethod('canAddChildren') || ($folder->hasMethod('canAddChildren') && $folder->canAddChildren())) { |
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| 178 | // TODO Will most likely be replaced by GridField logic |
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| 179 | $addFolderBtn = new LiteralField( |
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| 180 | 'AddFolderButton', |
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| 181 | sprintf( |
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| 182 | '<a class="ss-ui-button font-icon-folder-add no-text cms-add-folder-link" title="%s" data-icon="add" data-url="%s" href="%s"></a>', |
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| 183 | _t('Folder.AddFolderButton', 'Add folder'), |
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| 184 | Controller::join_links($this->Link('AddForm'), '?' . http_build_query(array( |
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| 185 | 'action_doAdd' => 1, |
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| 186 | 'ParentID' => $folder->ID, |
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| 187 | 'SecurityID' => $form->getSecurityToken()->getValue() |
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| 188 | ))), |
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| 189 | Controller::join_links($this->Link('addfolder'), '?ParentID=' . $folder->ID) |
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| 190 | ) |
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| 191 | ); |
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| 192 | } else { |
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| 193 | $addFolderBtn = ''; |
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| 194 | } |
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| 195 | |||
| 196 | // Move existing fields to a "details" tab, unless they've already been tabbed out through extensions. |
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| 197 | // Required to keep Folder->getCMSFields() simple and reuseable, |
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| 198 | // without any dependencies into AssetAdmin (e.g. useful for "add folder" views). |
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| 199 | if(!$fields->hasTabset()) { |
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| 200 | $tabs = new TabSet('Root', |
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| 201 | $tabList = new Tab('ListView', _t('AssetAdmin.ListView', 'List View')), |
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| 202 | $tabTree = new Tab('TreeView', _t('AssetAdmin.TreeView', 'Tree View')) |
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| 203 | ); |
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| 204 | $tabList->addExtraClass("content-listview cms-tabset-icon list"); |
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| 205 | $tabTree->addExtraClass("content-treeview cms-tabset-icon tree"); |
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| 206 | if($fields->Count() && $folder && $folder->isInDB()) { |
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| 207 | $tabs->push($tabDetails = new Tab('DetailsView', _t('AssetAdmin.DetailsView', 'Details'))); |
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| 208 | $tabDetails->addExtraClass("content-galleryview cms-tabset-icon edit"); |
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| 209 | foreach($fields as $field) { |
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| 210 | $fields->removeByName($field->getName()); |
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| 211 | $tabDetails->push($field); |
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| 212 | } |
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| 213 | } |
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| 214 | $fields->push($tabs); |
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| 215 | } |
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| 216 | |||
| 217 | // we only add buttons if they're available. User might not have permission and therefore |
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| 218 | // the button shouldn't be available. Adding empty values into a ComposteField breaks template rendering. |
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| 219 | $actionButtonsComposite = CompositeField::create()->addExtraClass('cms-actions-row'); |
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| 220 | if($addFolderBtn) $actionButtonsComposite->push($addFolderBtn); |
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| 221 | |||
| 222 | // Add the upload field for new media |
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| 223 | if($currentPageID = $this->currentPageID()){ |
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| 224 | Session::set("{$this->class}.currentPage", $currentPageID); |
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| 225 | } |
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| 226 | |||
| 227 | $folder = $this->currentPage(); |
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| 228 | |||
| 229 | $uploadField = UploadField::create('AssetUploadField', ''); |
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| 230 | $uploadField->setConfig('previewMaxWidth', 40); |
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| 231 | $uploadField->setConfig('previewMaxHeight', 30); |
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| 232 | $uploadField->setConfig('changeDetection', false); |
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| 233 | $uploadField->addExtraClass('ss-assetuploadfield'); |
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| 234 | $uploadField->removeExtraClass('ss-uploadfield'); |
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| 235 | $uploadField->setTemplate('AssetUploadField'); |
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| 236 | |||
| 237 | if($folder->exists()) { |
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| 238 | $path = $folder->getFilename(); |
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| 239 | $uploadField->setFolderName($path); |
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| 240 | } else { |
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| 241 | $uploadField->setFolderName('/'); // root of the assets |
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| 242 | } |
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| 243 | |||
| 244 | $exts = $uploadField->getValidator()->getAllowedExtensions(); |
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| 245 | asort($exts); |
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| 246 | $uploadField->Extensions = implode(', ', $exts); |
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| 247 | |||
| 248 | // List view |
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| 249 | $fields->addFieldsToTab('Root.ListView', array( |
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| 250 | $actionsComposite = CompositeField::create( |
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| 251 | $actionButtonsComposite |
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| 252 | )->addExtraClass('cms-content-toolbar field'), |
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| 253 | $uploadField, |
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| 254 | new HiddenField('ID'), |
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| 255 | $gridField |
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| 256 | )); |
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| 257 | |||
| 258 | // Tree view |
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| 259 | $fields->addFieldsToTab('Root.TreeView', array( |
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| 260 | clone $actionsComposite, |
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| 261 | // TODO Replace with lazy loading on client to avoid performance hit of rendering potentially unused views |
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| 262 | new LiteralField( |
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| 263 | 'Tree', |
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| 264 | FormField::create_tag( |
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| 265 | 'div', |
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| 266 | array( |
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| 267 | 'class' => 'cms-tree', |
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| 268 | 'data-url-tree' => $this->Link('getsubtree'), |
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| 269 | 'data-url-savetreenode' => $this->Link('savetreenode') |
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| 270 | ), |
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| 271 | $this->SiteTreeAsUL() |
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| 272 | ) |
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| 273 | ) |
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| 274 | )); |
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| 275 | |||
| 276 | // Move actions to "details" tab (they don't make sense on list/tree view) |
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| 277 | $actions = $form->Actions(); |
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| 278 | $saveBtn = $actions->fieldByName('action_save'); |
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| 279 | $deleteBtn = $actions->fieldByName('action_delete'); |
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| 280 | $actions->removeByName('action_save'); |
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| 281 | $actions->removeByName('action_delete'); |
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| 282 | if(($saveBtn || $deleteBtn) && $fields->fieldByName('Root.DetailsView')) { |
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| 283 | $fields->addFieldToTab( |
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| 284 | 'Root.DetailsView', |
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| 285 | CompositeField::create($saveBtn,$deleteBtn)->addExtraClass('Actions') |
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| 286 | ); |
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| 287 | } |
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| 288 | |||
| 289 | |||
| 290 | $fields->setForm($form); |
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| 291 | $form->setTemplate($this->getTemplatesWithSuffix('_EditForm')); |
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| 292 | // TODO Can't merge $FormAttributes in template at the moment |
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| 293 | $form->addExtraClass('cms-edit-form ' . $this->BaseCSSClasses()); |
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| 294 | $form->setAttribute('data-pjax-fragment', 'CurrentForm'); |
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| 295 | $form->Fields()->findOrMakeTab('Root')->setTemplate('CMSTabSet'); |
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| 296 | |||
| 297 | // Optionally handle form submissions with 'X-Formschema-Request' |
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| 298 | // which rely on having validation errors returned as structured data |
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| 299 | $form->setValidationResponseCallback(function() use ($form) { |
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| 300 | $request = $this->getRequest(); |
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| 301 | if($request->getHeader('X-Formschema-Request')) { |
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| 302 | $data = $this->getSchemaForForm($form); |
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| 303 | $response = new SS_HTTPResponse(Convert::raw2json($data)); |
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| 304 | $response->addHeader('Content-Type', 'application/json'); |
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| 305 | return $response; |
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| 306 | |||
| 307 | } |
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| 308 | }); |
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| 309 | |||
| 310 | |||
| 311 | $this->extend('updateEditForm', $form); |
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| 312 | |||
| 313 | return $form; |
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| 314 | } |
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| 315 | |||
| 316 | public function addfolder($request) { |
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| 317 | $obj = $this->customise(array( |
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| 318 | 'EditForm' => $this->AddForm() |
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| 319 | )); |
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| 320 | |||
| 321 | if($request->isAjax()) { |
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| 322 | // Rendering is handled by template, which will call EditForm() eventually |
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| 323 | $content = $obj->renderWith($this->getTemplatesWithSuffix('_Content')); |
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| 324 | } else { |
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| 325 | $content = $obj->renderWith($this->getViewer('show')); |
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| 326 | } |
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| 327 | |||
| 328 | return $content; |
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| 329 | } |
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| 330 | |||
| 331 | public function delete($data, $form) { |
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| 332 | $className = $this->stat('tree_class'); |
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| 333 | |||
| 334 | $record = DataObject::get_by_id($className, $data['ID']); |
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| 335 | if($record && !$record->canDelete()) { |
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| 336 | return Security::permissionFailure(); |
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| 337 | } |
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| 338 | View Code Duplication | if(!$record || !$record->ID) { |
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| 339 | throw new SS_HTTPResponse_Exception("Bad record ID #" . (int)$data['ID'], 404); |
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| 340 | } |
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| 341 | $parentID = $record->ParentID; |
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| 342 | $record->delete(); |
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| 343 | $this->setCurrentPageID(null); |
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| 344 | |||
| 345 | $this->getResponse()->addHeader('X-Status', rawurlencode(_t('LeftAndMain.DELETED', 'Deleted.'))); |
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| 346 | $this->getResponse()->addHeader('X-Pjax', 'Content'); |
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| 347 | return $this->redirect(Controller::join_links($this->Link('show'), $parentID ? $parentID : 0)); |
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| 348 | } |
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| 349 | |||
| 350 | /** |
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| 351 | * Get the search context |
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| 352 | * |
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| 353 | * @return SearchContext |
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| 354 | */ |
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| 355 | public function getSearchContext() { |
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| 403 | |||
| 404 | /** |
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| 405 | * Returns a form for filtering of files and assets gridfield. |
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| 406 | * Result filtering takes place in {@link getList()}. |
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| 407 | * |
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| 408 | * @return Form |
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| 409 | * @see AssetAdmin.js |
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| 410 | */ |
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| 411 | public function SearchForm() { |
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| 432 | |||
| 433 | public function AddForm() { |
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| 467 | |||
| 468 | /** |
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| 469 | * Add a new group and return its details suitable for ajax. |
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| 470 | * |
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| 471 | * @todo Move logic into Folder class, and use LeftAndMain->doAdd() default implementation. |
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| 472 | */ |
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| 473 | public function doAdd($data, $form) { |
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| 530 | |||
| 531 | /** |
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| 532 | * Get an asset renamer for the given filename. |
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| 533 | * |
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| 534 | * @param string $filename Path name |
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| 535 | * @return AssetNameGenerator |
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| 536 | */ |
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| 537 | protected function getNameGenerator($filename){ |
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| 541 | |||
| 542 | /** |
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| 543 | * Custom currentPage() method to handle opening the 'root' folder |
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| 544 | */ |
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| 545 | public function currentPage() { |
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| 556 | |||
| 557 | public function getSiteTreeFor($className, $rootID = null, $childrenMethod = null, $numChildrenMethod = null, $filterFunction = null, $minNodeCount = 30) { |
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| 562 | |||
| 563 | public function getCMSTreeTitle() { |
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| 566 | |||
| 567 | public function SiteTreeAsUL() { |
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| 570 | |||
| 571 | /** |
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| 572 | * @param bool $unlinked |
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| 573 | * @return ArrayList |
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| 574 | */ |
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| 575 | public function Breadcrumbs($unlinked = false) { |
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| 601 | |||
| 602 | public static function menu_title($class = null, $localised = true) { |
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| 603 | // Deprecate this menu title if installed alongside new asset admin |
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| 610 | |||
| 611 | public function providePermissions() { |
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| 620 | |||
| 621 | } |
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| 622 | /** |
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| 656 |
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