143 lines
3.5 KiB
PHP
Executable File
143 lines
3.5 KiB
PHP
Executable File
<?php
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namespace Balanced\Core;
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class ItemizationIterator implements \Iterator
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{
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protected $_page,
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$_offset = 0;
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public function __construct($resource, $uri, $data = null)
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{
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$this->_page = new Page($resource, $uri, $data);
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}
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// Iterator
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public function current()
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{
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return $this->_page->items[$this->_offset];
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}
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public function key()
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{
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return $this->_page->offset + $this->_offset;
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}
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public function next()
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{
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$this->_offset += 1;
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if ($this->_offset >= count($this->_page->items)) {
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$this->_offset = 0;
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$this->_page = $this->_page->next();
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}
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}
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public function rewind()
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{
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$this->_page = $this->_page->first();
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$this->_offset = 0;
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}
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public function valid()
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{
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return ($this->_page != null &&
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$this->_offset < count($this->_page->items));
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}
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}
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class Itemization implements \IteratorAggregate, \ArrayAccess
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{
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public $resource,
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$uri;
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protected $_page,
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$_offset = 0,
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$_size=25;
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public function __construct($resource, $uri, $data = null)
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{
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$this->resource = $resource;
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$this->uri = $uri;
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if ($data != null)
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$this->_page = new Page($resource, $uri, $data);
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else
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$this->_page = null;
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}
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protected function _getPage($offset = null)
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{
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if ($this->_page == null) {
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$this->_offset = ($offset == null) ? 0 : $offset * $this->_size;
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$uri = $this->_buildUri();
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$this->_page = new Page($this->resource, $uri);
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}
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else if ($offset != null) {
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$offset = $offset * $this->_size;
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if ($offset != $this->_offset) {
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$this->_offset = $offset;
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$uri = $this->_buildUri();
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$this->_page = new Page($this->resource, $uri);
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}
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}
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return $this->_page;
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}
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protected function _getItem($offset)
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{
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$page_offset = floor($offset/$this->_size);
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$page = $this->_getPage($page_offset);
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return $page->items[$offset - $page->offset];
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}
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public function total()
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{
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return $this->_getPage()->total;
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}
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protected function _buildUri($offset = null)
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{
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# TODO: hacky but works for now
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$offset = ($offset == null) ? $this->_offset : $offset;
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if (strpos($this->uri, '?') === false)
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$uri = $this->uri . '?';
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else
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$uri = $this->uri . '&';
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$uri = $uri . 'offset=' . strval($offset);
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return $uri;
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}
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// IteratorAggregate
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public function getIterator()
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{
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$uri = $this->_buildUri($offset = 0);
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$uri = $this->_buildUri($offset = 0);
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return new ItemizationIterator($this->resource, $uri);
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}
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// ArrayAccess
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public function offsetSet($offset, $value)
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{
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throw new BadMethodCallException(get_class($this) . ' array access is read-only');
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}
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public function offsetExists($offset)
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{
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return (0 <= $offset && $offset < $this->total());
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}
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public function offsetUnset($offset)
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{
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throw new BadMethodCallException(get_class($this) . ' array access is read-only');
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}
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public function offsetGet($offset)
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{
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return $this->_getItem($offset);
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}
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}
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