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<?php |
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/* For licensing terms, see /license.txt */ |
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/** |
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* Item Class. |
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*/ |
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class CcItem implements CcIItem |
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{ |
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public $identifier = null; |
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public $identifierref = null; |
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public $isvisible = null; |
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public $title = null; |
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public $parameters = null; |
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public $childitems = null; |
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private $parentItem = null; |
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private $isempty = true; |
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public function __construct($node = null, $doc = null) |
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{ |
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if (is_object($node)) { |
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$clname = get_class($node); |
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if ($clname == 'CcResource') { |
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$this->initNewItem(); |
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$this->identifierref = $node->identifier; |
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$this->title = is_string($doc) && (!empty($doc)) ? $doc : 'item'; |
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} elseif ($clname == 'CcManifest') { |
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$this->initNewItem(); |
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$this->identifierref = $node->manifestID(); |
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$this->title = is_string($doc) && (!empty($doc)) ? $doc : 'item'; |
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} elseif (is_object($doc)) { |
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$this->processItem($node, $doc); |
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} else { |
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$this->initNewItem(); |
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} |
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} else { |
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$this->initNewItem(); |
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} |
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} |
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public function attrValue(&$nod, $name, $ns = null) |
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{ |
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return is_null($ns) ? |
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($nod->hasAttribute($name) ? $nod->getAttribute($name) : null) : |
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($nod->hasAttributeNS($ns, $name) ? $nod->getAttributeNS($ns, $name) : null); |
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} |
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public function processItem(&$node, &$doc) |
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{ |
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$this->identifier = $this->attrValue($node, "identifier"); |
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$this->structure = $this->attrValue($node, "structure"); |
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$this->identifierref = $this->attrValue($node, "identifierref"); |
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$atr = $this->attrValue($node, "isvisible"); |
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$this->isvisible = is_null($atr) ? true : $atr; |
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$nlist = $node->getElementsByTagName('title'); |
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if (is_object($nlist) && ($nlist->length > 0)) { |
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$this->title = $nlist->item(0)->nodeValue; |
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} |
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$nlist = $doc->nodeList("//imscc:item[@identifier='".$this->identifier."']/imscc:item"); |
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if ($nlist->length > 0) { |
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$this->childitems = []; |
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foreach ($nlist as $item) { |
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$key = $this->attrValue($item, "identifier"); |
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$this->childitems[$key] = new CcItem($item, $doc); |
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} |
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} |
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$this->isempty = false; |
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} |
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/** |
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* Add one Child Item. |
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*/ |
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public function addChildItem(CcIItem &$item) |
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{ |
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if (is_null($this->childitems)) { |
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$this->childitems = []; |
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} |
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$this->childitems[$item->identifier] = $item; |
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} |
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/** |
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* Add new child Item. |
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* |
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* @param string $title |
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* |
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* @return CcIItem |
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*/ |
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public function add_new_child_item($title = '') |
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{ |
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$sc = new CcItem(); |
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$sc->title = $title; |
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$this->addChildItem($sc); |
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return $sc; |
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} |
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public function attachResource($resource) |
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{ |
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if ($this->hasChildItems()) { |
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throw new Exception("Can not attach resource to item that contains other items!"); |
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} |
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$resident = null; |
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if (is_string($resource)) { |
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$resident = $resource; |
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} elseif (is_object($resource)) { |
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$clname = get_class($resource); |
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if ($clname == 'CcResource') { |
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$resident = $resource->identifier; |
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} elseif ($clname == 'CcManifest') { |
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$resident = $resource->manifestID(); |
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} else { |
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throw new Exception("Unable to attach resource. Invalid object."); |
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} |
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} |
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if (is_null($resident) || (empty($resident))) { |
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throw new Exception("Resource must have valid identifier!"); |
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} |
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$this->identifierref = $resident; |
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} |
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public function hasChildItems() |
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{ |
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return is_array($this->childitems) && (count($this->childitems) > 0); |
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} |
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public function child_item($identifier) |
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{ |
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return $this->hasChildItems() ? $this->childitems[$identifier] : null; |
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} |
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public function initClean() |
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{ |
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$this->identifier = null; |
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$this->isvisible = null; |
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$this->title = null; |
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$this->parameters = null; |
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$this->childitems = null; |
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$this->parentItem = null; |
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$this->isempty = true; |
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} |
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public function initNewItem() |
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{ |
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$this->identifier = CcHelpers::uuidgen('I_'); |
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$this->isvisible = true; //default is true |
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$this->title = null; |
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$this->parameters = null; |
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$this->childitems = null; |
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$this->parentItem = null; |
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$this->isempty = false; |
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} |
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} |
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chamilo /
chamilo-lms
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