<?php
class uiScratchPad
{
    function uiScratchPad(&$uiBase)
    {
        $this->Base  =& $uiBase;
        $this->items =& $_SESSION[UI_SCRATCHPAD_SESSNAME]['content'];
        $this->order =& $_SESSION[UI_SCRATCHPAD_SESSNAME]['order'];
        $this->reloadUrl = UI_BROWSER.'?popup[]=_reload_parent&popup[]=_close';
    }

    function setReload()
    {
        $this->Base->redirUrl = $this->reloadUrl;
    }

    function &get()
    {
        if (!is_array($this->items))
            $this->_load();
        return $this->items;
    }

    function _load()
    {
        $this->items = array();
        $spData = $this->Base->gb->loadPref($this->Base->sessid, UI_SCRATCHPAD_KEY);
        if (!PEAR::isError($spData)) {
            ## ScratchPad found in DB
            $arr = explode(' ', $spData);
            /*
            ## Akos old format #####################################
            foreach($arr as $val) {
                if (preg_match(UI_SCRATCHPAD_REGEX, $val)) {
                    list ($gunid, $date) = explode(':', $val);
                    if ($this->Base->gb->_idFromGunid($gunid) != FALSE) {
                        $res[] = array_merge($this->Base->_getMetaInfo($this->Base->gb->_idFromGunid($gunid)), array('added' => $date));
                    }
                }
            }
            */

            ## new format ##########################################
            foreach($arr as $gunid) {
                if (preg_match('/[0-9]{1,20}/', $gunid)) {
                    if ($this->Base->gb->_idFromGunid($this->Base->_toHex($gunid)) != FALSE) {
                        if ($i = $this->Base->_getMetaInfo($this->Base->gb->_idFromGunid($this->Base->_toHex($gunid))))
                            $this->items[] = $i;
                    }
                }
            }
        }
    }


    function save()
    {
        foreach($this->items as $val) {
            #$str .= $val['gunid'].':'.$val['added'].' ';         ## new format ###
            $str .= $this->Base->_toInt8($val['gunid']).' ';      ## Akos´ old format ###
        }
        $this->Base->gb->savePref($this->Base->sessid, UI_SCRATCHPAD_KEY, $str);
    }


    function addItem($id)
    {
        if(!$this->Base->SYSTEMPREFS[UI_SCRATCHPAD_MAXLENGTH_KEY]) {
            $this->Base->_retMsg('ScratchPad length is not set in System Preferences, so it cannot be used.');
            return false;
        }

        $item = $this->Base->_getMetaInfo($id);
        $sp   = $this->get();
        foreach ($sp as $key=>$val) {
            if ($val['id'] == $item['id']) {
                unset($sp[$key]);
                $this->Base->_retMsg('Entry $1 was already on SP since $2.\nMoved to Top.', $item['title'], $val['added']);
            } else {
                #$this->Base->incAccessCounter($id);
            }
        }
        $sp = array_merge(array($item), is_array($sp) ? $sp : NULL);
        for ($n=0; $n<$this->Base->SYSTEMPREFS[UI_SCRATCHPAD_MAXLENGTH_KEY]; $n++) {
            if (is_array($sp[$n])) $this->items[$n] = $sp[$n];
        }
    }


    function removeItems($ids)
    {
        if (!$ids)
            return FALSE;              ## empty parameter
        if (!is_array($ids))
            $ids = array($ids);  ## just single id given

        foreach ($ids as $id) {
            #$info = $this->Base->_getMetaInfo($id);
            $sp =& $this->get();
            foreach ($sp as $key=>$val) {
                #if ($val['id'] == $info['id']) {
                if ($val['id'] == $id) {
                    unset ($sp[$key]);
                    #$this->Base->decAccessCounter($id);
                }
            }
        }

        return TRUE;
    }


    function reOrder($by)
    {
        foreach ($this->items as $key=>$val) {
            $s[$key] = $val[$by];
        }

        $curr =  $this->order[$by];
        $this->order = array();
        (is_null($curr) || $curr=='DESC') ? $this->order[$by] = 'ASC' : $this->order[$by] = 'DESC';

        switch($this->order[$by]) {
            case "ASC":   asort($s); break;
            case "DESC": arsort($s); break;
        }

        foreach ($s as $key=>$val) {
            $res[] = $this->items[$key];
        }

        $this->items = $res;
    }


    function reLoadM()
    {
        foreach($this->items as $key=>$val)
            $this->items[$key] = $this->Base->_getMetaInfo($val['id']);
    }
}
?>