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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @package Zend_View
*/
namespace Zend\View\Helper;
use Zend\View\Exception;
/**
* Helper for retrieving avatars from gravatar.com
*
* @package Zend\View
* @subpackage Helper
*/
class Gravatar extends AbstractHtmlElement
{
/**
* URL to gravatar service
*/
const GRAVATAR_URL = 'http://www.gravatar.com/avatar';
/**
* Secure URL to gravatar service
*/
const GRAVATAR_URL_SECURE = 'https://secure.gravatar.com/avatar';
/**
* Gravatar rating
*/
const RATING_G = 'g';
const RATING_PG = 'pg';
const RATING_R = 'r';
const RATING_X = 'x';
/**
* Default gravatar image value constants
*/
const DEFAULT_404 = '404';
const DEFAULT_MM = 'mm';
const DEFAULT_IDENTICON = 'identicon';
const DEFAULT_MONSTERID = 'monsterid';
const DEFAULT_WAVATAR = 'wavatar';
/**
* Options
*
* @var array
*/
protected $options = array(
'img_size' => 80,
'default_img' => self::DEFAULT_MM,
'rating' => self::RATING_G,
'secure' => null,
);
/**
* Email Adress
*
* @var string
*/
protected $email;
/**
* Attributes for HTML image tag
*
* @var array
*/
protected $attribs;
/**
* Returns an avatar from gravatar's service.
*
* $options may include the following:
* - 'img_size' int height of img to return
* - 'default_img' string img to return if email adress has not found
* - 'rating' string rating parameter for avatar
* - 'secure' bool load from the SSL or Non-SSL location
*
* @see http://pl.gravatar.com/site/implement/url
* @see http://pl.gravatar.com/site/implement/url More information about gravatar's service.
* @param string|null $email Email adress.
* @param null|array $options Options
* @param array $attribs Attributes for image tag (title, alt etc.)
* @return Zend\View\Helper\Gravatar
*/
public function __invoke($email = "", $options = array(), $attribs = array())
{
if (!empty($email)) {
$this->setEmail($email);
}
if (!empty($options)) {
$this->setOptions($options);
}
if (!empty($attribs)) {
$this->setAttribs($attribs);
}
return $this;
}
/**
* Configure state
*
* @param array $options
* @return Gravatar
*/
public function setOptions(array $options)
{
foreach ($options as $key => $value) {
$method = 'set' . str_replace(' ', '', ucwords(str_replace('_', ' ', $key)));
if (method_exists($this, $method)) {
$this->{$method}($value);
}
}
return $this;
}
/**
* Get img size
*
* @return int The img size
*/
public function getImgSize()
{
return $this->options['img_size'];
}
/**
* Set img size in pixels
*
* @param int $imgSize Size of img must be between 1 and 512
* @return Gravatar
*/
public function setImgSize($imgSize)
{
$this->options['img_size'] = (int) $imgSize;
return $this;
}
/**
* Get default img
*
* @return string
*/
public function getDefaultImg()
{
return $this->options['default_img'];
}
/**
* Set default img
*
* Can be either an absolute URL to an image, or one of the DEFAULT_* constants
*
* @link http://pl.gravatar.com/site/implement/url More information about default image.
* @param string $defaultImg
* @return Gravatar
*/
public function setDefaultImg($defaultImg)
{
$this->options['default_img'] = urlencode($defaultImg);
return $this;
}
/**
* Set rating value
*
* Must be one of the RATING_* constants
*
* @link http://pl.gravatar.com/site/implement/url More information about rating.
* @param string $rating Value for rating. Allowed values are: g, px, r,x
* @throws Exception\DomainException
*/
public function setRating($rating)
{
switch ($rating) {
case self::RATING_G:
case self::RATING_PG:
case self::RATING_R:
case self::RATING_X:
$this->options['rating'] = $rating;
break;
default:
throw new Exception\DomainException(sprintf(
'The rating value "%s" is not allowed',
$rating
));
}
return $this;
}
/**
* Get rating value
*
* @return string
*/
public function getRating()
{
return $this->options['rating'];
}
/**
* Set email adress
*
* @param string $email
* @return Gravatar
*/
public function setEmail( $email )
{
$this->email = $email;
return $this;
}
/**
* Get email adress
*
* @return string
*/
public function getEmail()
{
return $this->email;
}
/**
* Load from an SSL or No-SSL location?
*
* @param bool $flag
* @return Gravatar
*/
public function setSecure($flag)
{
$this->options['secure'] = ($flag === null) ? null : (bool) $flag;
return $this;
}
/**
* Get an SSL or a No-SSL location
*
* @return bool
*/
public function getSecure()
{
if ($this->options['secure'] === null) {
return (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
}
return $this->options['secure'];
}
/**
* Get attribs of image
*
* Warning!
* If you set src attrib, you get it, but this value will be overwritten in
* protected method setSrcAttribForImg(). And finally your get other src
* value!
*
* @return array
*/
public function getAttribs()
{
return $this->attribs;
}
/**
* Set attribs for image tag
*
* Warning! You shouldn't set src attrib for image tag.
* This attrib is overwritten in protected method setSrcAttribForImg().
* This method(_setSrcAttribForImg) is called in public method getImgTag().
*
* @param array $attribs
* @return Gravatar
*/
public function setAttribs(array $attribs)
{
$this->attribs = $attribs;
return $this;
}
/**
* Get URL to gravatar's service.
*
* @return string URL
*/
protected function getGravatarUrl()
{
return ($this->getSecure() === false) ? self::GRAVATAR_URL : self::GRAVATAR_URL_SECURE;
}
/**
* Get avatar url (including size, rating and default image oprions)
*
* @return string
*/
protected function getAvatarUrl()
{
$src = $this->getGravatarUrl()
. '/' . md5($this->getEmail())
. '?s=' . $this->getImgSize()
. '&d=' . $this->getDefaultImg()
. '&r=' . $this->getRating();
return $src;
}
/**
* Set src attrib for image.
*
* You shouldn't set a own url value!
* It sets value, uses protected method getAvatarUrl.
*
* If already exists, it will be overwritten.
*
* @return void
*/
protected function setSrcAttribForImg()
{
$attribs = $this->getAttribs();
$attribs['src'] = $this->getAvatarUrl();
$this->setAttribs($attribs);
}
/**
* Return valid image tag
*
* @return string
*/
public function getImgTag()
{
$this->setSrcAttribForImg();
$html = '<img'
. $this->htmlAttribs($this->getAttribs())
. $this->getClosingBracket();
return $html;
}
/**
* Return valid image tag
*
* @return string
*/
public function __toString()
{
return $this->getImgTag();
}
}
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