openrat-cms

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Element.class.php (2385B)

      1 <?php
      2 
      3 
      4 namespace template_engine\element;
      5 
      6 
      7 use template_engine\element\XMLFormatter;
      8 use template_engine\element\attribute\SimpleAttribute;
      9 
     10 class Element
     11 {
     12 	private $name;
     13 	/**
     14 	 * @var array
     15 	 */
     16 	protected $attributes = [];
     17 	protected $content    = '';
     18 
     19 	protected $selfClosing = false;
     20 
     21 	/**
     22 	 * @var array
     23 	 */
     24 	protected $children = [];
     25 
     26 
     27 	/**
     28 	 * @param $element Element
     29 	 */
     30 	public function asChildOf($element ) {
     31 		$element->addChild($this);
     32 		return $this;
     33 	}
     34 
     35 	public function addChild($child ) {
     36 
     37 		if   ( is_array( $child ) )
     38 			$this->children += $child;
     39 		else
     40 			$this->children[] = $child;
     41 
     42 		return $this;
     43 	}
     44 
     45 	public function __construct( $name )
     46 	{
     47 		$this->name = $name;
     48 	}
     49 
     50 	protected function getAttributeValue($name ){
     51 		return $this->attributes[$name]->render();
     52 	}
     53 
     54 	/**
     55 	 * The textual content of the element.
     56 	 *
     57 	 * @param string $content
     58 	 * @return $this
     59 	 */
     60 	public function content( $content )
     61 	{
     62 		$this->content = $content;
     63 		return $this;
     64 	}
     65 
     66 	/**
     67 	 * @param $format XMLFormatter
     68 	 * @return string
     69 	 */
     70 	public function render($format ) {
     71 
     72 		$this->selfClosing = $this->selfClosing && !$this->content && !$this->children;
     73 
     74 		$content = $format->getIndentation();
     75 
     76 		if   ( $this->name )
     77 			$content .= '<'.$this->name.
     78 				array_reduce( array_keys($this->attributes),function($carry,$key){return $carry.' '.$this->getAttributeValue($key);},'').(($this->selfClosing ?' /':'').'>');
     79 
     80 		$content .= $this->getContent();
     81 
     82 		$content .= $this->renderChildren( $format );
     83 
     84 		if   ( $this->selfClosing )
     85 			;
     86 		else
     87 			if   ( $this->name ) {
     88 				if   ( $this->children )
     89 					// Elements with children are closed on the next line
     90 					$content .= $format->getIndentationOnClose();
     91 
     92 				// Closing element
     93 				$content .= '</'.$this->name.'>';
     94 			}
     95 
     96 		return $content;
     97 	}
     98 
     99 	public function addAttribute($key, $value) {
    100 		$this->attributes[] = new SimpleAttribute($key,$value);
    101 		return $this;
    102 	}
    103 
    104 	public function selfClosing($selfClosing) {
    105 		$this->selfClosing = boolval($selfClosing);
    106 		return $this;
    107 	}
    108 
    109 	protected function getContent()
    110 	{
    111 		return $this->content;
    112 	}
    113 
    114 	/**
    115 	 * @param $format XMLFormatter
    116 	 * @return string
    117 	 */
    118 	protected function renderChildren($format )
    119 	{
    120 		$content = '';
    121 
    122 		/** @var Element $child */
    123 		foreach($this->children as $child ) {
    124 			$content .= $child->render( $format->deeper() );
    125 		}
    126 
    127 		return $content;
    128 	}
    129 }
    130 
    131