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<?php |
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namespace BringYourOwnIdeas\Maintenance\Forms; |
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use LogicException; |
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use SilverStripe\Forms\DropdownField; |
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use SilverStripe\Forms\GridField\GridField; |
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use SilverStripe\Forms\GridField\GridField_ActionProvider; |
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use SilverStripe\Forms\GridField\GridField_DataManipulator; |
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use SilverStripe\Forms\GridField\GridField_FormAction; |
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use SilverStripe\Forms\GridField\GridField_HTMLProvider; |
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use SilverStripe\ORM\ArrayList; |
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use SilverStripe\ORM\Filterable; |
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use SilverStripe\ORM\SS_List; |
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use SilverStripe\View\ArrayData; |
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use SilverStripe\View\Requirements; |
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/** |
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* GridFieldDropdownFilter provides a dropdown that can be used to filter a GridField arbitrarily |
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* |
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* @package forms |
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* @subpackage fields-gridfield |
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*/ |
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class GridFieldDropdownFilter implements GridField_HTMLProvider, GridField_ActionProvider, GridField_DataManipulator |
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{ |
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/** |
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* Default string used in the value http attribute on the option for all results |
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*/ |
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const DEFAULT_OPTION_VALUE = '_all'; |
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/** |
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* @var string |
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*/ |
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protected $name; |
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/** |
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* @var string |
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*/ |
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protected $targetFragment; |
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/** |
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* @var SS_List |
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*/ |
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protected $filterOptions; |
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/** |
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* @var string |
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*/ |
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protected $defaultOption; |
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/** |
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* @param string $name A name unique to this GridFieldDropdownFilter on this GridField |
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* @param string $targetFragment Fragment to write the html fragment to. |
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* @param string $defaultOption A string used as the label for the default "All results" option |
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*/ |
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public function __construct($name, $targetFragment, $defaultOption = null) |
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{ |
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$this->name = $name; |
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$this->targetFragment = $targetFragment; |
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$this->defaultOption = $defaultOption ?: _t(__CLASS__ . '.AllResults', 'All results'); |
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$this->filterOptions = ArrayList::create(); |
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} |
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/** |
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* Add an option to the dropdown that provides a filter |
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* |
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* @param string $name |
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* @param string $title |
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* @param callable|array $filter Either a closure to filter a given SS_Filterable or a simple associative array will |
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* be used for filtering |
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* @return $this |
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*/ |
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public function addFilterOption($name, $title, $filter) |
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{ |
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$this->filterOptions->push(compact('name', 'title', 'filter')); |
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return $this; |
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} |
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/** |
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* Remove a filter option with the given name |
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* |
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* @param string $name |
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* @return $this |
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*/ |
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public function removeFilterOption($name) |
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{ |
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$this->filterOptions->remove($this->filterOptions->find('name', $name)); |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getActions($gridField) |
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{ |
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return ['filter']; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function handleAction(GridField $gridField, $actionName, $arguments, $data) |
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{ |
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if ($actionName !== 'filter') { |
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return; |
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} |
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if (!isset($data['filter-selection']) || $data['filter-selection'] === static::DEFAULT_OPTION_VALUE) { |
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$gridField->State->{__CLASS__ . '_' . $this->name} = null; |
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} else { |
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$gridField->State->{__CLASS__ . '_' . $this->name} = $data['filter-selection']; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getManipulatedData(GridField $gridField, SS_List $dataList) |
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{ |
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if (!$dataList instanceof Filterable) { |
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throw new LogicException(__CLASS__ . ' is only compatible with SS_Filterable lists'); |
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} |
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$filter = $gridField->State->{__CLASS__ . '_' . $this->name}; |
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if (!$filter || !($option = $this->filterOptions->find('name', $filter))) { |
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return $dataList; |
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} |
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$filterSpec = $option['filter']; |
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if (is_callable($filterSpec)) { |
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return $filterSpec($dataList); |
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} |
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if (is_array($filterSpec)) { |
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foreach ($filterSpec as $key => $value) { |
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if ($dataList->canFilterBy($key)) { |
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$dataList = $dataList->filter($key, $value); |
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} |
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} |
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return $dataList; |
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} |
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throw new LogicException('Invalid filter specification given'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getHTMLFragments($gridField) |
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{ |
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Requirements::javascript('bringyourownideas/silverstripe-maintenance: client/dist/js/bundle.js'); |
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$dropdownOptions = [static::DEFAULT_OPTION_VALUE => $this->defaultOption] + |
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$this->filterOptions->map('name', 'title')->toArray(); |
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$dropdown = DropdownField::create( |
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'filter-selection', |
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null, |
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$dropdownOptions, |
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$gridField->State->{__CLASS__ . '_' . $this->name} ?: static::DEFAULT_OPTION_VALUE |
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); |
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$dropdown->addExtraClass('no-change-track'); |
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return [ |
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$this->targetFragment => ArrayData::create([ |
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'Filter' => $dropdown, |
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'Action' => GridField_FormAction::create($gridField, 'filter', 'Go', 'filter', null), |
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])->renderWith(GridFieldDropdownFilter::class), |
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]; |
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} |
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} |
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