/**
* Creates a node.
*
* Examples:
* ```php
* // creates a simple node with two attributes and inner text
* $item = new DomNode("item", array("id" => 101, "title" => "Title 101"), "Inner text here...");
* echo $item;
*
* // creates a complex node
* // in this case we use a callback function to add complex structures into the node
* $root = new DomNode("root", function ($target) {
* // adds three subnodes
* for ($i = 0; $i < 3; $i++) {
* $target->append(
* new DomNode("item", array("id" => $i, "title" => "Title $i"), "This is the item $i")
* );
* }
*
* // appends some XML code
* $target->append("<text>This text is added to the end.</text>");
*
* // prepends some XML code
* $target->prepend("<text>This text is added to the beginning</text>");
* });
* echo $root;
* ```
*
* @param string $nodeName Node name (not required)
* @param string $document Document context (not required)
* @param array $attributes List of attributes (not required)
* @param string $text Inner text (not required)
* @param string $callback Callback function (not required)
*/
public function __construct($nodeName = null, $document = null, $attributes = null, $text = null, $callback = null)
{
$args = ArrHelper::fetch(func_get_args(), array("nodeName" => "string", "document" => "\\DOMDocument", "attributes" => "array", "text" => "scalar", "callback" => "function"));
// creates a document
$this->document = $args["document"] === null ? new DOMDocument("1.0", $this->_defaultCharset) : $args["document"];
$this->document->preserveWhiteSpace = false;
$this->document->formatOutput = true;
// creates a DOM element
if ($args["nodeName"] !== null) {
$elem = $this->document->createElement($args["nodeName"]);
$this->document->appendChild($elem);
array_push($this->elements, $elem);
}
// sets attributes
if ($args["attributes"] !== null) {
foreach ($args["attributes"] as $name => $value) {
$this->attr($name, $value);
}
}
// sets inner text
if ($args["text"] !== null) {
$this->text($args["text"]);
}
// calls callback function
if ($args["callback"] !== null) {
$args["callback"]($this);
}
}
