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<?php
namespace Kanboard\Core\ExternalLink;
use Kanboard\Core\Base;
/**
* External Link Manager
*
* @package externalLink
* @author Frederic Guillot
*/
class ExternalLinkManager extends Base
{
/**
* Automatic type value
*
* @var string
*/
const TYPE_AUTO = 'auto';
/**
* Registered providers
*
* @access private
* @var array
*/
private $providers = array();
/**
* Type chosen by the user
*
* @access private
* @var string
*/
private $userInputType = '';
/**
* Text entered by the user
*
* @access private
* @var string
*/
private $userInputText = '';
/**
* Register a new provider
*
* Providers are registered in a LIFO queue
*
* @access public
* @param ExternalLinkProviderInterface $provider
* @return ExternalLinkManager
*/
public function register(ExternalLinkProviderInterface $provider)
{
array_unshift($this->providers, $provider);
return $this;
}
/**
* Get provider
*
* @access public
* @param string $type
* @throws ExternalLinkProviderNotFound
* @return ExternalLinkProviderInterface
*/
public function getProvider($type)
{
foreach ($this->providers as $provider) {
if ($provider->getType() === $type) {
return $provider;
}
}
throw new ExternalLinkProviderNotFound('Unable to find link provider: '.$type);
}
/**
* Get link types
*
* @access public
* @return array
*/
public function getTypes()
{
$types = array();
foreach ($this->providers as $provider) {
$types[$provider->getType()] = $provider->getName();
}
asort($types);
return array(self::TYPE_AUTO => t('Auto')) + $types;
}
/**
* Get dependency label from a provider
*
* @access public
* @param string $type
* @param string $dependency
* @return string
*/
public function getDependencyLabel($type, $dependency)
{
$provider = $this->getProvider($type);
$dependencies = $provider->getDependencies();
return isset($dependencies[$dependency]) ? $dependencies[$dependency] : $dependency;
}
/**
* Find a provider that match
*
* @access public
* @throws ExternalLinkProviderNotFound
* @return ExternalLinkProviderInterface
*/
public function find()
{
$provider = null;
if ($this->userInputType === self::TYPE_AUTO) {
$provider = $this->findProvider();
} else {
$provider = $this->getProvider($this->userInputType);
$provider->setUserTextInput($this->userInputText);
}
if ($provider === null) {
throw new ExternalLinkProviderNotFound('Unable to find link information from provided information');
}
return $provider;
}
/**
* Set form values
*
* @access public
* @param array $values
* @return ExternalLinkManager
*/
public function setUserInput(array $values)
{
$this->userInputType = empty($values['type']) ? self::TYPE_AUTO : $values['type'];
$this->userInputText = empty($values['text']) ? '' : trim($values['text']);
return $this;
}
/**
* Find a provider that user input
*
* @access private
* @return ExternalLinkProviderInterface
*/
private function findProvider()
{
foreach ($this->providers as $provider) {
$provider->setUserTextInput($this->userInputText);
if ($provider->match()) {
return $provider;
}
}
return null;
}
}
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