class.ilNestedList.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilNestedList
{
        protected $item_class = "il_Explorer";
        protected $list_class = array();
        protected $auto_numbering = false;
        protected $nr = array();

        function __constructor()
        {
                $this->list_class[0] = "il_Explorer";
                $this->childs[0] = array();
        }

        function setItemClass($a_val)
        {
                $this->item_class = $a_val;
        }

        function getItemClass()
        {
                return $this->item_class;
        }

        function setListClass($a_val, $a_depth = 0)
        {
//var_dump($a_val);
                $this->list_class[$a_depth] = $a_val;
        }

        function getListClass($a_depth = 0)
        {
                return $this->list_class[$a_depth];
        }

        function addListNode($a_content, $a_id, $a_parent = 0)
        {
                $this->nodes[$a_id] = $a_content;
                $this->childs[$a_parent][] = $a_id;
        }

        public function setAutoNumbering($a_val)
        {
                $this->auto_numbering = $a_val;
        }

        public function getAutoNumbering()
        {
                return $this->auto_numbering;
        }

        function getNumbers()
        {
                return $this->nr;
        }


        function getHTML()
        {
                $tpl = new ilTemplate("tpl.nested_list.html", true, true, "Services/UIComponent/NestedList");

                $nr = array();
                $depth = 1;
                if (is_array($this->childs[0]) && count($this->childs[0]) > 0)
                {
                        $this->listStart($tpl, $depth);
                        foreach ($this->childs[0] as $child)
                        {
                                $this->renderNode($child, $tpl, $depth, $nr);
                        }
                        $this->listEnd($tpl);
                }

                return $tpl->get();
        }

        function renderNode($a_id, $tpl, $depth, &$nr)
        {
                if (!isset($nr[$depth]))
                {
                        $nr[$depth] = 1;
                }
                else
                {
                        $nr[$depth]++;
                }

                $nr_str = $sep = "";
                if ($this->getAutoNumbering())
                {
                        for($i = 1; $i <= $depth; $i++)
                        {
                                $nr_str.= $sep.$nr[$i];
                                $sep = ".";
                        }
                }

                $this->listItemStart($tpl);
                $tpl->setCurrentBlock("content");
                $tpl->setVariable("CONTENT", $nr_str." ".$this->nodes[$a_id]);
                $this->nr[$a_id] = $nr_str;
//echo "<br>".$this->nodes[$a_id];
                $tpl->parseCurrentBlock();
                $tpl->touchBlock("tag");

                if (is_array($this->childs[$a_id]) && count($this->childs[$a_id]) > 0)
                {
                        $this->listStart($tpl, $depth + 1);
                        foreach ($this->childs[$a_id] as $child)
                        {
                                $this->renderNode($child, $tpl, $depth + 1, $nr);
                        }
                        $this->listEnd($tpl);
                }
                unset($nr[$depth + 1]);

                $this->listItemEnd($tpl);
        }

        function listItemStart($tpl)
        {
                if ($this->getItemClass() != "")
                {
                        $tpl->setCurrentBlock("list_item_start");
                        $tpl->setVariable("LI_CLASS", ' class="'.$this->getItemClass().'" ');
                        $tpl->parseCurrentBlock();
                }
                else
                {
                        $tpl->touchBlock("list_item_start");
                }
                $tpl->touchBlock("tag");
        }

        function listItemEnd($tpl)
        {
                $tpl->touchBlock("list_item_end");
                $tpl->touchBlock("tag");
        }

        function listStart($tpl, $depth)
        {
//echo "<br>listStart";

                $class = ($this->getListClass($depth) != "")
                        ? $this->getListClass($depth)
                        : $this->getListClass();
//echo "-$class-";
                if ($class != "")
                {
                        $tpl->setCurrentBlock("list_start");
                        $tpl->setVariable("UL_CLASS", ' class="'.$class.'" ');
                        $tpl->parseCurrentBlock();
                }
                else
                {
                        $tpl->touchBlock("list_start");
                }
                $tpl->touchBlock("tag");
        }

        function listEnd($tpl)
        {
//echo "<br>listEnd";
                $tpl->touchBlock("list_end");
                $tpl->touchBlock("tag");
        }

}
?>