public $priority = 0;

public $avatarSizes = null;

protected $resize = false;

protected static $instance = false;

abstract public function __construct();

static public function getInstance($integration = null) {

if (self::$instance === false) {

$config = KunenaFactory::getConfig ();

if (! $integration)

$integration = $config->integration_avatar;

self::$instance = KunenaIntegration::initialize ( 'avatar', $integration );

}

return self::$instance;

}

public function load($userlist) {}

abstract public function getEditURL();

abstract protected function _getURL($user, $sizex, $sizey);

public function getSize($sizex=90, $sizey=90) {

$size = new StdClass();

$size->x = intval($sizex);

$size->y = intval($sizey);

if (!intval($sizex)) {

$template = KunenaFactory::getTemplate();

$name = ucfirst(strtolower($sizex));

$size->x = intval($template->params->get('avatarSizeX'.$name, 90));

$size->y = intval($template->params->get('avatarSizeY'.$name, 90));

}

return $size;

}

public function getURL($user, $sizex=90, $sizey=90) {

KUNENA_PROFILER ? KunenaProfiler::instance()->start('function '.__CLASS__.'::'.__FUNCTION__.'()') : null;

$size = $this->getSize($sizex, $sizey);

if (!$size->x || !$size->y) return;

$result = $this->_getURL($user, $size->x, $size->y);

KUNENA_PROFILER ? KunenaProfiler::instance()->stop('function '.__CLASS__.'::'.__FUNCTION__.'()') : null;

return $result;

}

public function getLink($user, $class='', $sizex=90, $sizey=90)

{

$size = $this->getSize($sizex, $sizey);

$avatar = $this->getURL($user, $size->x, $size->y);

if (!$avatar) return;

if ($class) $class=' class="'.$class.'"';

// Style is needed to resize avatar for JomSocial and other integration that do not have automatic resizing

if (!$this->resize) $style = 'style="max-width: '.$size->x.'px; max-height: '.$size->y.'px"';

else $style = '';

$link = '<img'.$class.' src="'.$avatar.'" alt="'.JText::sprintf('COM_KUNENA_LIB_AVATAR_TITLE', $user->getName()).'" '.$style.' />';

return $link;

}