241 lines
6.5 KiB
PHP
241 lines
6.5 KiB
PHP
<?php
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/**
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* A base class for decorators that wrap around a list to provide additional
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* functionality. It passes through list methods to the underlying list
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* implementation.
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*
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* @package framework
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* @subpackage model
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*/
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abstract class SS_ListDecorator extends ViewableData implements SS_List, SS_Sortable, SS_Filterable, SS_Limitable {
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/**
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* @var SS_List
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*/
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protected $list;
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public function __construct(SS_List $list) {
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$this->list = $list;
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$this->failover = $this->list;
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parent::__construct();
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}
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/**
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* Returns the list this decorator wraps around.
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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 $this->list;
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}
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// PROXIED METHODS ---------------------------------------------------------
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public function offsetExists($key) {
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return $this->list->offsetExists($key);
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}
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public function offsetGet($key) {
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return $this->list->offsetGet($key);
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}
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public function offsetSet($key, $value) {
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$this->list->offsetSet($key, $value);
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}
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public function offsetUnset($key) {
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$this->list->offsetUnset($key);
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}
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public function toArray($index = null) {
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return $this->list->toArray($index);
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}
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public function toNestedArray($index = null){
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return $this->list->toNestedArray($index);
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}
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public function add($item) {
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$this->list->add($item);
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}
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public function remove($itemObject) {
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$this->list->remove($itemObject);
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}
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public function getIterator() {
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return $this->list->getIterator();
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}
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public function exists() {
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return $this->list->exists();
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}
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public function First() {
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return $this->list->First();
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}
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public function Last() {
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return $this->list->Last();
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}
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public function TotalItems() {
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return $this->list->Count();
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}
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public function Count() {
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return $this->list->Count();
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}
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public function forTemplate() {
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return $this->list->forTemplate();
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}
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public function map($index = 'ID', $titleField = 'Title', $emptyString = null, $sort = false) {
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return $this->list->map($index, $titleField, $emptyString, $sort);
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}
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public function find($key, $value) {
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return $this->list->find($key, $value);
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}
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public function column($value = 'ID') {
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return $this->list->column($value);
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}
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public function each($callback) {
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return $this->list->each($callback);
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}
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public function canSortBy($by) {
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return $this->list->canSortBy($by);
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}
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public function reverse() {
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return $this->list->reverse();
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}
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/**
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* Sorts this list by one or more fields. You can either pass in a single
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* field name and direction, or a map of field names to sort directions.
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*
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* @example $list->sort('Name'); // default ASC sorting
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* @example $list->sort('Name DESC'); // DESC sorting
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* @example $list->sort('Name', 'ASC');
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* @example $list->sort(array('Name'=>'ASC,'Age'=>'DESC'));
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*/
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public function sort() {
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$args = func_get_args();
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return call_user_func_array(array($this->list, 'sort'), $args);
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}
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public function canFilterBy($by) {
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return $this->list->canFilterBy($by);
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}
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/**
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* Filter the list to include items with these charactaristics
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*
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* @example $list->filter('Name', 'bob'); // only bob in list
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* @example $list->filter('Name', array('aziz', 'bob'); // aziz and bob in list
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* @example $list->filter(array('Name'=>'bob, 'Age'=>21)); // bob or someone with Age 21
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* @example $list->filter(array('Name'=>'bob, 'Age'=>array(21, 43))); // bob or anyone with Age 21 or 43
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*/
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public function filter(){
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$args = func_get_args();
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return call_user_func_array(array($this->list, 'filter'), $args);
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}
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/**
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* Return a copy of this list which contains items matching any of these charactaristics.
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*
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* @example // only bob in the list
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* $list = $list->filterAny('Name', 'bob');
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* // SQL: WHERE "Name" = 'bob'
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* @example // azis or bob in the list
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* $list = $list->filterAny('Name', array('aziz', 'bob');
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* // SQL: WHERE ("Name" IN ('aziz','bob'))
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* @example // bob or anyone aged 21 in the list
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* $list = $list->filterAny(array('Name'=>'bob, 'Age'=>21));
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* // SQL: WHERE ("Name" = 'bob' OR "Age" = '21')
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* @example // bob or anyone aged 21 or 43 in the list
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* $list = $list->filterAny(array('Name'=>'bob, 'Age'=>array(21, 43)));
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* // SQL: WHERE ("Name" = 'bob' OR ("Age" IN ('21', '43'))
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* @example // all bobs, phils or anyone aged 21 or 43 in the list
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* $list = $list->filterAny(array('Name'=>array('bob','phil'), 'Age'=>array(21, 43)));
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* // SQL: WHERE (("Name" IN ('bob', 'phil')) OR ("Age" IN ('21', '43'))
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*
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* @param string|array See {@link filter()}
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* @return DataList
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*/
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public function filterAny() {
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return call_user_func_array(array($this->list, __FUNCTION__), func_get_args());
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}
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/**
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* Note that, in the current implementation, the filtered list will be an ArrayList, but this may change in a
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* future implementation.
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* @see SS_Filterable::filterByCallback()
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*
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* @example $list = $list->filterByCallback(function($item, $list) { return $item->Age == 9; })
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* @param callable $callback
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* @return ArrayList (this may change in future implementations)
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*/
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public function filterByCallback($callback) {
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if(!is_callable($callback)) {
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throw new LogicException(sprintf(
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"SS_Filterable::filterByCallback() passed callback must be callable, '%s' given",
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gettype($callback)
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));
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}
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$output = ArrayList::create();
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foreach($this->list as $item) {
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if(call_user_func($callback, $item, $this->list)) $output->push($item);
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}
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return $output;
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}
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public function limit($limit, $offset = 0) {
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return $this->list->limit($limit, $offset);
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}
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/**
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* Return the first item with the given ID
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*
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* @param int $id
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* @return mixed
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*/
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public function byID($id) {
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return $this->list->byID($id);
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}
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/**
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* Filter this list to only contain the given Primary IDs
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*
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* @param array $ids Array of integers
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* @return SS_List
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*/
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public function byIDs($ids) {
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return $this->list->byIDs($ids);
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}
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/**
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* Exclude the list to not contain items with these charactaristics
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*
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* @example $list->exclude('Name', 'bob'); // exclude bob from list
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* @example $list->exclude('Name', array('aziz', 'bob'); // exclude aziz and bob from list
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* @example $list->exclude(array('Name'=>'bob, 'Age'=>21)); // exclude bob or someone with Age 21
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* @example $list->exclude(array('Name'=>'bob, 'Age'=>array(21, 43))); // exclude bob or anyone with Age 21 or 43
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*/
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public function exclude(){
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$args = func_get_args();
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return call_user_func_array(array($this->list, 'exclude'), $args);
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}
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public function debug() {
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return $this->list->debug();
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}
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}
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