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<?php
/* Copyright (c) 2013, Geert Bergman (geert@scrivo.nl)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of "Scrivo" nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: PropertySet.php 841 2013-08-19 22:19:47Z geert $
*/
/**
* Implementation of the \Scrivo\PropertySet class.
*/
namespace Scrivo;
/**
* A property set provides property access to the page properties of
* a page or list item properties of a list item.
*
* When constructing pages or list items their list items will be added
* to the property sets that belong to these pages or list items.
*
* The property set also deals with the late binding of application
* properties.
*/
class PropertySet implements \Iterator {
/**
* An array to hold the properties.
*
* @var array
*/
protected $properties;
/**
* Construct an empty property set.
*/
public function __construct() {
$this->properties = array();
}
/**
* Retrieve a property from the property set.
*
* @param string $name The name of the property.
*
* @return \Scrivo\PageProperty|\Scrivo\ListItemProperty $property The
* property to retrieve.
*/
public function __get($name) {
if (isset($this->properties[$name])) {
return $this->properties[$name];
}
throw new \Scrivo\SystemException("Invalid property \"$name\". Valid ".
"properties are: ".implode(", ", array_keys($this->properties)));
}
/**
* Add a property to the property set.
*
* @param string $name The name of the property .
* @param \Scrivo\PageProperty|\Scrivo\ListItemProperty $property The
* property to add.
*/
public function __set($name, $property) {
if ($property instanceof \Scrivo\PageProperty
|| $property instanceof \Scrivo\ListItemProperty) {
$this->properties[$name] = $property;
} else {
throw new \Scrivo\SystemException("Illegal argument");
}
}
/**
* Rewind the properties array so iterating will start at the beginning
* again.
*/
function rewind() {
reset($this->properties);
}
/**
* Get the current property when iterating.
*/
function current() {
return current($this->properties);
}
/**
* Get the key of the current property when iterating.
*/
function key() {
return key($this->properties);
}
/**
* Get the next property when iterating.
*/
function next() {
next($this->properties);
}
/**
* Check if the current key is valid.
*/
function valid() {
return key($this->properties) ? true : false;
}
}