FRAGMENT.php

<?
/*
 * PHP HTML Engine
 *
 * Copyright (C) 2015 Charles Johannisen
 *
 * 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 FRAGMENT extends HTML{

  public $__config = array();
  public $__id = -1;
  public $__lastid = 0;

  public function __construct(){
  }

  public function __call( $name, $args ){

    $attributes = array();
    $addto = null;
    $id = null;
    $content = "";

    if( count($args) > 0 ){
      foreach( $args as $arg ){
        if( !ctype_digit( $arg ) && !is_array( $arg ) && $this->startswith( trim( $arg ), "{" ) ){
          $attributes = json_decode( $arg, true );
        }elseif( is_int( $arg ) && $arg > 0 ){
          $id = $arg;
        }elseif( is_array( $arg ) && count( $arg ) == 1 ){
          $addto = $arg[0];
        }
      }
    }

    if( $id === $addto ){
      $id = null;
    }

    $element = array( "id"=>$id, "name"=>$name, "attributes"=>$attributes, "content"=>$content, "addto"=>$this->parent_id( $addto ) );
    $this->__id++;


    if( $this->__id == 0 ){

      $element['id'] = 0;
      $element['addto'] = -1;

    }

    $this->__config[$this->__id] = $element;
    return $this;

  }

  public function parent_id( $id ){

    $__id = $this->__id;
    foreach( $this->__config as $parentid=>$value ){
      if( is_int($value["id"]) && $id === $value["id"] ){
        $__id = $parentid;
      }
    }
    return $__id;

  }

  public function find_id( $id ){

    foreach( $this->__config as $findid=>$value ){
      if( $id == $value["id"] ){
        return true;
      }
    }
    return false;

  }

  public function startswith( $str, $prefix ){
    return strpos( $str, $prefix ) === 0;
  }

  public function content( $content ){
    $this->__config[$this->__id]['content'] = $content;
    return $this;
  }

  public function render(){

    $__list = array();

    foreach( $this->__config as $id=>$value ){
      $__list[] = $value['addto'];
    }

    $__list = array_unique($__list);
    arsort($__list);
    $__list = array_values($__list);
    return $this->render_r( $__list, 0 );

  }

  private function render_r( $list, $currentid ){

    $contents = array();
    $parent = $list[$currentid];

    foreach( $this->__config as $id=>$element ){

      if( $element['addto'] == $parent ){
        $contents[] = isset($element['rendered']) ? $element['rendered'] : self::element( $element['name'], $element['attributes'], $element['content'] );
      }

    }

    $this->__config[$parent]['rendered'] = self::element( $this->__config[$parent]['name'], $this->__config[$parent]['attributes'], implode( "\n", $contents )."\n".$this->__config[$parent]['content'] );

    if( $parent == 0 ){
      return $this->__config[$parent]['rendered'];
    }else{
      $currentid++;
      return $this->render_r( $list, $currentid );
    }


  }

}