590 lines
14 KiB
PHP
590 lines
14 KiB
PHP
<?php
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/**
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* Displays a {@link SS_List} in a grid format.
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*
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* GridField is a field that takes an SS_List and displays it in an table with rows
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* and columns. It reminds of the old TableFields but works with SS_List types
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* and only loads the necessary rows from the list.
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*
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* The minimum configuration is to pass in name and title of the field and a
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* SS_List.
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*
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* <code>
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* $gridField = new GridField('ExampleGrid', 'Example grid', new DataList('Page'));
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* </code>
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*
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* @see SS_List
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*
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* @package sapphire
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* @subpackage fields-relational
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*/
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class GridField extends FormField {
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/**
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*
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* @var array
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*/
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public static $allowed_actions = array(
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'gridFieldAlterAction'
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);
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/** @var SS_List - the datasource */
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protected $list = null;
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/** @var string - the classname of the DataObject that the GridField will display. Defaults to the value of $this->list->dataClass */
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protected $modelClassName = '';
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/** @var array */
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public $fieldCasting = array();
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/** @var array */
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public $fieldFormatting = array();
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/** @var GridState - the current state of the GridField */
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protected $state = null;
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/**
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*
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* @var GridFieldConfig
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*/
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protected $config = null;
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/**
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* The components list
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*/
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protected $components = array();
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/**
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* This is the columns that will be visible
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*
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* @var array
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*/
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protected $displayFields = array();
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/**
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* Internal dispatcher for column handlers.
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* Keys are column names and values are GridField_ColumnProvider objects
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*/
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protected $columnDispatch = null;
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/**
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* Creates a new GridField field
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*
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* @param string $name
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* @param string $title
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* @param SS_List $dataList
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* @param GridFieldConfig $config
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*/
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public function __construct($name, $title = null, SS_List $dataList = null, GridFieldConfig $config = null) {
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parent::__construct($name, $title, null);
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FormField::__construct($name);
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if($dataList) {
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$this->setList($dataList);
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}
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if(!$config) {
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$this->config = $this->getDefaultConfig();
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} else {
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$this->config = $config;
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}
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$this->setComponents($this->config);
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$this->components[] = new GridState_Component();
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$this->state = new GridState($this);
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$this->addExtraClass('ss-gridfield');
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$this->requireDefaultCSS();
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}
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/**
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* Set the modelClass that this field will get it column headers from
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*
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* @param string $modelClassName
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*/
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public function setModelClass($modelClassName) {
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$this->modelClassName = $modelClassName;
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return $this;
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}
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/**
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* Returns a dataclass that is a DataObject type that this field should look like.
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*
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* @throws Exception
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* @return string
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*/
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public function getModelClass() {
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if ($this->modelClassName) return $this->modelClassName;
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if ($this->list && $this->list->dataClass) return $this->list->dataClass;
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throw new LogicException('GridField doesn\'t have a modelClassName, so it doesn\'t know the columns of this grid.');
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}
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/**
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* Set which Components that this GridFields contain by using a GridFieldConfig
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*
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* @param GridFieldConfig $config
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*/
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protected function setComponents(GridFieldConfig $config) {
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$this->components = $config->getComponents();
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return $this;
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}
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/**
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* Get a default configuration for this gridfield
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*
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* @return GridFieldConfig
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*/
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protected function getDefaultConfig() {
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$config = GridFieldConfig::create();
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$config->addComponent(new GridFieldSortableHeader());
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$config->addComponent(new GridFieldFilter());
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$config->addComponent(new GridFieldDefaultColumns());
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$config->addComponent(new GridFieldPaginator());
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return $config;
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}
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/**
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* Require the default css styling
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*/
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protected function requireDefaultCSS() {
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Requirements::css('sapphire/css/GridField.css');
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}
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/**
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* @return array
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*/
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public function getDisplayFields() {
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if(!$this->displayFields) {
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return singleton($this->getModelClass())->summaryFields();
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}
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return $this->displayFields;
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}
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/**
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*
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* @return GridFieldConfig
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*/
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public function getConfig() {
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return $this->config;
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}
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/**
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*
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* @param array $fields
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*/
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public function setDisplayFields(array $fields) {
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if(!is_array($fields)) {
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throw new InvalidArgumentException('Arguments passed to GridField::setDisplayFields() must be an array');
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}
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$this->displayFields = $fields;
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return $this;
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}
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/**
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* @param array $casting
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*/
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public function setFieldCasting($casting) {
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$this->fieldCasting = $casting;
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return $this;
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}
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/**
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* @param array $casting
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*/
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public function getFieldCasting() {
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return $this->fieldCasting;
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}
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/**
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* @param array $casting
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*/
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public function setFieldFormatting($formatting) {
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$this->fieldFormatting = $formatting;
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return $this;
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}
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/**
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* @param array $casting
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*/
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public function getFieldFormatting() {
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return $this->fieldFormatting;
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}
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/**
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* Taken from TablelistField
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*
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* @param $value
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*
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*/
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public function getCastedValue($value, $castingDefinition) {
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if(is_array($castingDefinition)) {
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$castingParams = $castingDefinition;
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array_shift($castingParams);
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$castingDefinition = array_shift($castingDefinition);
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} else {
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$castingParams = array();
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}
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if(strpos($castingDefinition,'->') === false) {
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$castingFieldType = $castingDefinition;
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$castingField = DBField::create($castingFieldType, $value);
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$value = call_user_func_array(array($castingField,'XML'),$castingParams);
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} else {
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$fieldTypeParts = explode('->', $castingDefinition);
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$castingFieldType = $fieldTypeParts[0];
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$castingMethod = $fieldTypeParts[1];
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$castingField = DBField::create($castingFieldType, $value);
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$value = call_user_func_array(array($castingField,$castingMethod),$castingParams);
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}
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return $value;
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}
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/**
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* Set the datasource
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*
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* @param SS_List $list
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*/
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public function setList(SS_List $list) {
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$this->list = $list;
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return $this;
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}
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/**
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* Get the datasource
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*
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* @return SS_List
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*/
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public function getList() {
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return $this->list;
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}
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/**
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* Get the current GridState
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*
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* @return GridState
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*/
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public function getState($getData=true) {
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if(!$this->state) {
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throw new LogicException('State has not been defined');
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}
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if($getData) {
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return $this->state->getData();
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}
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return $this->state;
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}
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/**
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* Returns the whole gridfield rendered with all the attached Elements
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*
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* @return string
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*/
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public function FieldHolder() {
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// Get columns
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$columns = $this->getColumns();
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// Get data
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$list = $this->getList();
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foreach($this->components as $item) {
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if($item instanceof GridField_DataManipulator) {
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$list = $item->getManipulatedData($this, $list);
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}
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}
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// Render headers, footers, etc
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$content = array(
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'header' => array(),
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'body' => array(),
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'footer' => array(),
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'before' => array(),
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'after' => array(),
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);
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foreach($this->components as $item) {
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if($item instanceof GridField_HTMLProvider) {
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$fragments = $item->getHTMLFragments($this);
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foreach($fragments as $k => $v) {
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$content[$k][] = $v;
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}
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}
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}
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foreach($list as $idx => $record) {
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$record->iteratorProperties($idx, $list->count());
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$row = "<tr class='".$record->FirstLast()." ".$record->EvenOdd()."'>";
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foreach($columns as $column) {
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$colContent = $this->getColumnContent($record, $column);
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// A return value of null means this columns should be skipped altogether.
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if($colContent === null) continue;
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$colAttributes = $this->getColumnAttributes($record, $column);
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$row .= $this->createTag('td', $colAttributes, $colContent);
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}
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$row .= "</tr>";
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$content['body'][] = $row;
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}
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// Turn into the relevant parts of a table
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$head = $content['header'] ? $this->createTag('thead', array(), implode("\n", $content['header'])) : '';
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$body = $content['body'] ? $this->createTag('tbody', array(), implode("\n", $content['body'])) : '';
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$foot = $content['footer'] ? $this->createTag('tfoot', array(), implode("\n", $content['footer'])) : '';
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$attrs = array(
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'id' => isset($this->id) ? $this->id : null,
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'class' => "field CompositeField {$this->extraClass()}"
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);
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return
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implode("\n", $content['before']) .
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$this->createTag('table', $attrs, $head."\n".$foot."\n".$body) .
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implode("\n", $content['after']);
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}
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function getColumns() {
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// Get column list
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$columns = array();
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foreach($this->components as $item) {
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if($item instanceof GridField_ColumnProvider) {
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$item->augmentColumns($this, $columns);
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}
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}
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return $columns;
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}
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public function getColumnContent($record, $column) {
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// Build the column dispatch
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if(!$this->columnDispatch) $this->buildColumnDispatch();
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$handler = $this->columnDispatch[$column];
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if($handler) {
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return $handler->getColumnContent($this, $record, $column);
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} else {
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throw new InvalidArgumentException("Bad column '$column'");
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}
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}
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public function getColumnAttributes($record, $column) {
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// Build the column dispatch
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if(!$this->columnDispatch) $this->buildColumnDispatch();
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$handler = $this->columnDispatch[$column];
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if($handler) {
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$attrs = $handler->getColumnAttributes($this, $record, $column);
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if(is_array($attrs)) return $attrs;
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else if($attrs) throw new LogicException("Non-array response from " . get_class($handler) . "::getColumnAttributes()");
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else return array();
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} else {
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throw new InvalidArgumentException("Bad column '$column'");
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}
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}
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public function getColumnMetadata($column) {
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// Build the column dispatch
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if(!$this->columnDispatch) $this->buildColumnDispatch();
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$handler = $this->columnDispatch[$column];
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if($handler) {
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$metadata = $handler->getColumnMetadata($this, $column);
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if(is_array($metadata)) return $metadata;
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else if($metadata) throw new LogicException("Non-array response from " . get_class($handler) . "::getColumnMetadata()");
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else return array();
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} else {
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throw new InvalidArgumentException("Bad column '$column'");
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}
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}
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public function getColumnCount() {
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// Build the column dispatch
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if(!$this->columnDispatch) $this->buildColumnDispatch();
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return count($this->columnDispatch);
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}
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protected function buildColumnDispatch() {
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$this->columnDispatch = array();
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foreach($this->components as $item) {
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if($item instanceof GridField_ColumnProvider) {
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$columns = $item->getColumnsHandled($this);
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foreach($columns as $column) {
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$this->columnDispatch[$column] = $item;
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}
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}
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}
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}
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/**
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* This is the action that gets executed when a GridField_AlterAction gets clicked.
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*
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* @param array $data
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* @return string
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*/
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public function gridFieldAlterAction($data, $form, $request) {
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$id = $data['StateID'];
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$stateChange = Session::get($id);
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$state = $this->getState(false);
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$state->setValue($data['GridState']);
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$gridName = $stateChange['grid'];
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$grid = $form->Fields()->fieldByName($gridName);
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$actionName = $stateChange['actionName'];
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$args = $stateChange['args'];
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$grid->handleAction($actionName, $args, $data);
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// Make the form re-load it's values from the Session after redirect
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// so the changes we just made above survive the page reload
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// @todo Form really needs refactoring so we dont have to do this
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if (Director::is_ajax()) {
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return $form->forTemplate();
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} else {
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$data = $form->getData();
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Session::set("FormInfo.{$form->FormName()}.errors", array());
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Session::set("FormInfo.{$form->FormName()}.data", $data);
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Controller::curr()->redirectBack();
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}
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}
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public function handleAction($actionName, $args, $data) {
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$actionName = strtolower($actionName);
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foreach($this->components as $item) {
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if(!($item instanceof GridField_ActionProvider)) {
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continue;
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}
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if(in_array($actionName, array_map('strtolower', $item->getActions($this)))) {
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return $item->handleAction($this, $actionName, $args, $data);
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}
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}
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throw new InvalidArgumentException("Can't handle action '$actionName'");
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}
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}
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/**
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* This class is the base class when you want to have an action that alters the state of the gridfield
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*
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* @package sapphire
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* @subpackage forms
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*
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*/
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class GridField_Action extends FormAction {
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/**
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*
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* @var GridField
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*/
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protected $gridField;
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/**
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*
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* @var string
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*/
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protected $buttonLabel;
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/**
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*
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* @var array
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*/
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protected $stateValues;
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/**
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*
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* @var array
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*/
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//protected $stateFields = array();
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protected $actionName;
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protected $args = array();
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/**
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*
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* @param GridField $gridField
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* @param type $name
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* @param type $label
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* @param type $actionName
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* @param type $args
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*/
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public function __construct(GridField $gridField, $name, $label, $actionName, $args) {
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$this->gridField = $gridField;
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$this->buttonLabel = $label;
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$this->actionName = $actionName;
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$this->args = $args;
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parent::__construct($name);
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}
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/**
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* urlencode encodes less characters in percent form than we need - we need everything that isn't a \w
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*
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* @param string $val
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*/
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public function nameEncode($val) {
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return preg_replace_callback('/[^\w]/', array($this, '_nameEncode'), $val);
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}
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/**
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* The callback for nameEncode
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*
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* @param string $val
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*/
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public function _nameEncode($match) {
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return '%'.dechex(ord($match[0]));
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}
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/**
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* Default method used by Templates to render the form
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*
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* @return string HTML tag
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*/
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public function Field() {
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// Store state in session, and pass ID to client side
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$state = array(
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'grid' => $this->getNameFromParent(),
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'actionName' => $this->actionName,
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'args' => $this->args,
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);
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$id = preg_replace('/[^\w]+/', '_', uniqid('', true));
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Session::set($id, $state);
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$actionData['StateID'] = $id;
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// And generate field
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$attributes = array(
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'class' => 'action' . ($this->extraClass() ? $this->extraClass() : ''),
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'id' => $this->id(),
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'type' => 'submit',
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// Note: This field needs to be less than 65 chars, otherwise Suhosin security patch
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// will strip it from the requests
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'name' => 'action_gridFieldAlterAction'. '?' . http_build_query($actionData),
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'tabindex' => $this->getTabIndex(),
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);
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if($this->isReadonly()) {
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$attributes['disabled'] = 'disabled';
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$attributes['class'] = $attributes['class'] . ' disabled';
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}
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return $this->createTag('button', $attributes, $this->buttonLabel);
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}
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/**
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* Calculate the name of the gridfield relative to the Form
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*
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* @param GridField $base
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* @return string
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*/
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protected function getNameFromParent() {
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$base = $this->gridField;
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$name = array();
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do {
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array_unshift($name, $base->getName());
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$base = $base->getForm();
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} while ($base && !($base instanceof Form));
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return implode('.', $name);
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}
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}
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