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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2008 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class Atom_Base_Core {
protected $dom;
protected $element;
protected $children = array();
protected $element_name;
function __construct($element_name, $dom=null) {
if ($dom) {
$this->dom = $dom;
$this->element = $dom->createElement($element_name);
} else {
$this->dom = new DOMDocument('1.0', 'utf-8');
$this->element = $this->dom->createElementNS("http://www.w3.org/2005/Atom", $element_name);
}
$this->dom->appendChild($this->element);
$this->element_name = $element_name;
return $this;
}
public function get_element() {
$this->add_children_to_base_element();
return $this->element;
}
public function as_xml() {
$this->add_children_to_base_element();
$this->dom->formatOutput = true;
return $this->dom->saveXML();
}
public function as_json() {
$this->add_children_to_base_element();
/* Both Google and Yahoo generate their JSON from XML. We could do that, too. */
return null;
}
public function load_xml($xml) {
/* Load XML into our DOM. We can also validate against the RELAX NG schema from the Atom RFC. */
}
protected function add_child($element_type, $element_name) {
// @todo check if element_type is of Atom_Base; this can also be done with no magic
$element = new $element_type($element_name, $this->dom);
$this->children[$element_name][] = $element;
return end($this->children[$element_name]);
}
protected function add_children_to_base_element() {
foreach ($this->children as $element_type => $elements) {
$base_element = $this->element;
foreach ($elements as $id => $element) {
$base_element->appendChild($element->get_element());
}
}
}
}
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