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Standard.php
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Standard.php
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<?php
/**
* The MIT License
*
* Copyright (c) 2010 - 2012 Tony R Quilkey <trq@proemframework.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @namespace Proem\Service\Manager
*/
namespace Proem\Service\Manager;
use Proem\Service\Manager\Template;
use Proem\Service\Asset\Template as Asset;
/**
* A registry of assets.
*
* Within the manager itself assets are stored in a hash of key values where each
* value is an asset container.
*
* These containers contain the parameters required to instantiate an asset as
* well as a closure capable of returning a configured and instantiated asset.
*
* @see Proem\Service\Asset\Standard
*/
class Standard implements Template
{
/**
* Store assets.
*
* @var $assets array
*/
protected $assets = [];
/**
* Store an array containing information about what
* Assets this manager provides.
*
* @var array
*/
protected $provides = [];
/**
* Magic method proxies through to get()
*
* @param string $index The index the asset will be referenced by.
* @param Proem\Service\Asset\Template $asset
* @return Proem\Service\Manager\Template
*/
public function __set($index, Asset $asset)
{
return $this->set($index, $asset);
}
/**
* Store an Asset container by named index.
*
* @param string $index The index the asset will be referenced by.
* @param Proem\Service\Asset\Template $asset
* @return Proem\Service\Manager\Template
*/
public function set($index, Asset $asset)
{
$this->assets[$index] = $asset;
$this->provides[] = $asset->provides();
return $this;
}
/**
* Retrieve an asset container by named index.
*
* @param string $index The index the asset is referenced by.
* @return Proem\Service\Asset\Template
*/
public function getContainer($index)
{
return isset($this->assets[$index]) ? $this->assets[$index] : null;
}
/**
* Magic method proxies through to get().
*
* @param string $index The index the asset is referenced by
* @return object The object provided by the asset container
*/
public function __get($index)
{
return $this->get($index);
}
/**
* Retrieve an actual instantiated ssset object from within it's container.
*
* @param string $index The index the asset is referenced by
* @return object The object provided by the asset container
*/
public function get($index)
{
return isset($this->assets[$index]) ? $this->assets[$index]->get($this) : null;
}
/**
* Check to see if this manager has a specific asset.
*
* @param string $index The index the asset is referenced by
* @return bool
*/
public function has($index)
{
return isset($this->assets[$index]);
}
/**
* Check to see if this manager provides a specifically named
* asset and that it provides a specific object.
*
* <code>
* if ($am->provies('foo', 'Some\Bar\Object')) {}
* </code>
*
* @param string $index
* @param string|null $provides
* @return bool
*/
public function provides($index, $provides = null)
{
if (is_array($index)) {
foreach ($index as $key) {
if (!in_array($key, $this->provides)) {
return false;
}
}
return true;
} elseif ($provides === null) {
return in_array($index, $this->provides);
} else {
if ($this->has($index)) {
if ($this->assets[$index]->provides() == $provides) {
return true;
}
}
}
return false;
}
/**
* Retrieve an asset by what it provides.
*
* When called, this method will search all assets until it
* finds the first that provides the functionality asked for.
*
* It then returns that object.
*
* @param string $provides
* @return object
*/
public function getProvided($provides)
{
foreach ($this->assets as $asset) {
if ($asset->provides() == $provides) {
return $asset->get($this);
}
}
}
}