API15:JBrowser/isViewable/ja

isViewable($mimetype)

jimport( 'joomla.environment.browser' );

function isViewable($mimetype)
{
    $mimetype = strtolower($mimetype);
    list($type, $subtype) = explode('/', $mimetype);
 
    if (!empty($this->_accept)) {
        $wildcard_match = false;
 
        if (strpos($this->_accept, $mimetype) !== false) {
            return true;
        }
 
        if (strpos($this->_accept, '*/*') !== false) {
            $wildcard_match = true;
            if ($type != 'image') {
                return true;
            }
         }
 
        /* image/jpeg and image/pjpeg *appear* to be the same
        * entity, but Mozilla doesn't seem to want to accept the
        * latter.  For our purposes, we will treat them the
        * same.
        */
            if ($this->isBrowser('mozilla') &&
            ($mimetype == 'image/pjpeg') &&
            (strpos($this->_accept, 'image/jpeg') !== false)) {
                return true;
            }
 
        if (!$wildcard_match) {
            return false;
        }
    }
 
    if (!$this->hasFeature('images') || ($type != 'image')) {
        return false;
    }
 
    return (in_array($subtype, $this->_images));
}