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<?php |
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/** |
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* A GridField component that allows to temporary disable the |
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* pagination. |
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* |
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* It should be included before the GridFieldPaginator component that |
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* must be present (otherwise this class would be pretty useless). |
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* |
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* @package silverstripe-togglepaginator |
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*/ |
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class GridFieldTogglePaginator implements GridField_HTMLProvider, GridField_ActionProvider, GridField_DataManipulator |
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{ |
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/** |
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* The icon to use on the enable pagination button. Can be null. |
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* @config |
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*/ |
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private static $enable_icon; |
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/** |
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* The icon to use on the disable pagination button. Can be null. |
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* @config |
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*/ |
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private static $disable_icon; |
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/** |
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* Fragment to write the button to. |
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*/ |
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protected $target; |
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/** |
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* ID of the session data. |
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*/ |
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protected $state_id; |
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/** |
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* Session data (an associative array). |
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*/ |
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protected $state; |
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public function __construct($target = 'buttons-before-right') |
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{ |
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$this->target = $target; |
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} |
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/** |
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* Update $state and $state_id properties. |
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* |
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* If the $state array does not exist in the session, create it. |
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* |
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* The current implementation is borrowed directly from |
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* GridField_FormAction::getAttributes() 3.2.0-beta2. |
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*/ |
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protected function updateState($grid) |
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{ |
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if (isset($this->state_id)) { |
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return; |
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} |
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$state = array( |
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'grid' => $grid->getName(), |
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'actionName' => 'toggle', |
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'active' => true, |
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); |
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// Ensure the id doesn't contain only numeric characters |
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$this->state_id = 'gf_' . substr(md5(serialize($state)), 0, 8); |
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$this->state = Session::get($this->state_id); |
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if (! is_array($this->state) || ! array_key_exists('active', $this->state)) { |
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$this->state = $state; |
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Session::set($this->state_id, $state); |
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} |
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} |
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/** |
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* Implements the GridField_HTMLProvider interface. |
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* |
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* @param GridField $grid |
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* @return array |
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*/ |
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public function getHTMLFragments($grid) |
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{ |
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$this->updateState($grid); |
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$active = $this->state['active']; |
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$params = http_build_query(array('StateID' => $this->state_id)); |
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$data = new ArrayData(array( |
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'state' => $active ? 'ui-state-default' : 'ss-ui-alternate ui-state-highlight', |
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'icon' => Config::inst()->get(__CLASS__, $active ? 'enable_icon' : 'disable_icon'), |
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'label' => $active ? _t(__CLASS__ . '.DISABLE', 'Disable') : _t(__CLASS__ . '.ENABLE', 'Enable'), |
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'name' => 'action_gridFieldAlterAction?' . $params, |
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'url' => $grid->Link(), |
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)); |
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return array( |
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$this->target => $data->renderWith(__CLASS__), |
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); |
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} |
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/** |
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* Required by the GridField_ActionProvider interface. |
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* |
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* @param GridField $grid |
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* @return array |
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*/ |
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public function getActions($grid) |
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{ |
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return array('toggle'); |
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} |
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/** |
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* Handle the action. |
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* |
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* It swithces the "state" flag and saves the data into a session |
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* variable for later reuse. |
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* |
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* @param GridField $grid The subject GridField instance |
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* @param string $action The action name (lowercase!) |
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* @param mixed $arguments Optional argument(s) for the action |
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* @param array $data Form data, if relevant |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function handleAction(GridField $grid, $action, $arguments, $data) |
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{ |
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switch ($action) { |
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case 'toggle': |
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$this->updateState($grid); |
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$this->state['active'] = ! $this->state['active']; |
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Session::set($this->state_id, $this->state); |
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break; |
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default: |
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throw new InvalidArgumentException(sprintf( |
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'Action "%s" not understood', |
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$action |
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)); |
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} |
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} |
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/** |
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* Required by the GridField_DataManipulator interface. |
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* |
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* Disable pagination on the GridFieldPaginator component, if |
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* required by the current "state" flag. It must be called before |
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* GridFieldPaginator::getManipulatedData() to take effect, hence |
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* the requirement that GridFieldTogglePaginator must be added |
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* before GridFieldPaginator. |
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* |
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* @param GridField $grid |
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* @return SS_List |
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*/ |
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public function getManipulatedData(GridField $grid, SS_List $list) |
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{ |
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$this->updateState($grid); |
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if (! $this->state['active']) { |
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$grid->getConfig()->getComponentByType('GridFieldPaginator') |
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->setItemsPerPage(PHP_INT_MAX); |
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} |
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return $list; |
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} |
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} |
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.