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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package backup-convert
* @subpackage cc-library
* @copyright 2011 Darko Miletic <dmiletic@moodlerooms.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once 'cc_utils.php';
require_once 'cc_version_base.php';
require_once 'cc_resources.php';
require_once 'cc_manifest.php';
/**
* Organization Class
*
*/
class cc_organization implements cc_i_organization {
public $title = null;
public $identifier = null;
public $structure = null;
public $itemlist = null;
private $metadata = null;
private $sequencing = null;
public function __construct($node=null, $doc=null) {
if (is_object($node) && is_object($doc)) {
$this->process_organization($node,$doc);
} else {
$this->init_new();
}
}
/**
* Add one Item into the Organization
*
* @param cc_i_item $item
*/
public function add_item(cc_i_item &$item) {
if (is_null($this->itemlist)) {
$this->itemlist = array();
}
$this->itemlist[$item->identifier] = $item;
}
/**
* Add new Item into the Organization
*
* @param string $title
* @return cc_i_item
*/
public function add_new_item($title='') {
$nitem = new cc_item();
$nitem->title = $title;
$this->add_item($nitem);
return $nitem;
}
public function has_items() {
return is_array($this->itemlist) && (count($this->itemlist) > 0);
}
public function attr_value(&$nod, $name, $ns=null) {
return is_null($ns) ?
($nod->hasAttribute($name) ? $nod->getAttribute($name) : null) :
($nod->hasAttributeNS($ns, $name) ? $nod->getAttributeNS($ns, $name) : null);
}
public function process_organization(&$node,&$doc) {
$this->identifier = $this->attr_value($node,"identifier");
$this->structure = $this->attr_value($node,"structure");
$this->title = '';
$nlist = $node->getElementsByTagName('title');
if (is_object($nlist) && ($nlist->length > 0) ) {
$this->title = $nlist->item(0)->nodeValue;
}
$nlist = $doc->nodeList("//imscc:organization[@identifier='".$this->identifier."']/imscc:item");
$this->itemlist=array();
foreach ($nlist as $item) {
$this->itemlist[$item->getAttribute("identifier")] = new cc_item($item,$doc);
}
$this->isempty=false;
}
public function init_new() {
$this->title = null;
$this->identifier = cc_helpers::uuidgen('O_');
$this->structure = 'rooted-hierarchy';
$this->itemlist = null;
$this->metadata = null;
$this->sequencing = null;
}
public function uuidgen() {
$uuid = sprintf('%04x%04x', mt_rand(0, 65535), mt_rand(0, 65535));
return strtoupper(trim($uuid));
}
}
/**
* Item Class
*
*/
class cc_item implements cc_i_item {
public $identifier = null;
public $identifierref = null;
public $isvisible = null;
public $title = null;
public $parameters = null;
public $childitems = null;
private $parentItem = null;
private $isempty = true;
public function __construct($node=null,$doc=null) {
if (is_object($node)) {
$clname = get_class($node);
if ($clname =='cc_resource') {
$this->init_new_item();
$this->identifierref = $node->identifier;
$this->title = is_string($doc) && (!empty($doc)) ? $doc : 'item';
} else if ($clname =='cc_manifest') {
$this->init_new_item();
$this->identifierref = $node->manifestID();
$this->title = is_string($doc) && (!empty($doc)) ? $doc : 'item';
} else if ( is_object($doc)){
$this->process_item($node,$doc);
} else {
$this->init_new_item();
}
} else {
$this->init_new_item();
}
}
public function attr_value(&$nod, $name, $ns=null) {
return is_null($ns) ?
($nod->hasAttribute($name) ? $nod->getAttribute($name) : null) :
($nod->hasAttributeNS($ns, $name) ? $nod->getAttributeNS($ns, $name) : null);
}
public function process_item(&$node,&$doc) {
$this->identifier = $this->attr_value($node,"identifier");
$this->structure = $this->attr_value($node,"structure");
$this->identifierref = $this->attr_value($node,"identifierref");
$atr = $this->attr_value($node,"isvisible");
$this->isvisible = is_null($atr) ? true : $atr;
$nlist = $node->getElementsByTagName('title');
if (is_object($nlist) && ($nlist->length > 0) ) {
$this->title = $nlist->item(0)->nodeValue;
}
$nlist = $doc->nodeList("//imscc:item[@identifier='".$this->identifier."']/imscc:item");
if ($nlist->length > 0) {
$this->childitems=array();
foreach ($nlist as $item) {
$key=$this->attr_value($item,"identifier");
$this->childitems[$key] = new cc_item($item,$doc);
}
}
$this->isempty = false;
}
/**
* Add one Child Item
*
* @param cc_i_item $item
*/
public function add_child_item(cc_i_item &$item) {
if (is_null($this->childitems)) {
$this->childitems = array();
}
$this->childitems[$item->identifier] = $item;
}
/**
* Add new child Item
*
* @param string $title
* @return cc_i_item
*/
public function add_new_child_item($title='') {
$sc = new cc_item();
$sc->title = $title;
$this->add_child_item($sc);
return $sc;
}
public function attach_resource($resource) {
if ($this->has_child_items()) {
throw new Exception("Can not attach resource to item that contains other items!");
}
$resident = null;
if (is_string($resource)) {
$resident = $resource;
} else if (is_object($resource)) {
$clname = get_class($resource);
if ($clname == 'cc_resource') {
$resident = $resource->identifier;
} else
if ($clname == 'cc_manifest') {
$resident = $resource->manifestID();
} else {
throw new Exception("Unable to attach resource. Invalid object.");
}
}
if (is_null($resident) || (empty($resident))) {
throw new Exception("Resource must have valid identifier!");
}
$this->identifierref = $resident;
}
public function has_child_items() {
return is_array($this->childitems) && (count($this->childitems) > 0);
}
public function child_item($identifier) {
return $this->has_child_items() ? $this->childitems[$identifier] : null;
}
public function init_clean() {
$this->identifier = null;
$this->isvisible = null;
$this->title = null;
$this->parameters = null;
$this->childitems = null;
$this->parentItem = null;
$this->isempty = true;
}
public function init_new_item() {
$this->identifier = cc_helpers::uuidgen('I_');
$this->isvisible = true; //default is true
$this->title = null;
$this->parameters = null;
$this->childitems = null;
$this->parentItem = null;
$this->isempty = false;
}
}