<?php
// $Id: block.php,v 1.6 2005/06/26 15:38:23 mithyt2 Exp $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  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.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //

if (!defined('XOOPS_ROOT_PATH')) {
	exit();
}

/**
 * @author  Kazumi Ono <onokazu@xoops.org>
 * @copyright copyright (c) 2000 XOOPS.org
 **/

/**
 * A block
 * 
 * @author Kazumi Ono <onokazu@xoops.org>
 * @copyright copyright (c) 2000 XOOPS.org
 * 
 * @package kernel
 **/
class XoopsBlock extends XoopsObject
{

    /**
     * constructor
	 *  
     * @param mixed $id
     **/
    function XoopsBlock($id = null)
    {
        $this->initVar('bid', XOBJ_DTYPE_INT, null, false);
        $this->initVar('mid', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('func_num', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('options', XOBJ_DTYPE_TXTBOX, null, false, 255);
        $this->initVar('name', XOBJ_DTYPE_TXTBOX, null, true, 150);
        //$this->initVar('position', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('title', XOBJ_DTYPE_TXTBOX, null, false, 150);
        $this->initVar('content', XOBJ_DTYPE_TXTAREA, null, false);
        $this->initVar('side', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('weight', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('visible', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('block_type', XOBJ_DTYPE_OTHER, null, false);
        $this->initVar('c_type', XOBJ_DTYPE_OTHER, null, false);
        $this->initVar('isactive', XOBJ_DTYPE_INT, null, false);
        $this->initVar('dirname', XOBJ_DTYPE_TXTBOX, null, false, 50);
        $this->initVar('func_file', XOBJ_DTYPE_TXTBOX, null, false, 50);
        $this->initVar('show_func', XOBJ_DTYPE_TXTBOX, null, false, 50);
        $this->initVar('edit_func', XOBJ_DTYPE_TXTBOX, null, false, 50);
        $this->initVar('template', XOBJ_DTYPE_OTHER, null, false);
        $this->initVar('bcachetime', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('last_modified', XOBJ_DTYPE_INT, 0, false);

        // for backward compatibility
        if (isset($id)) {
            if (is_array($id)) {
                $this->assignVars($id);
            } else {
                $blkhandler =& xoops_gethandler('block');
                $obj =& $blkhandler->get($id);
                foreach (array_keys($obj->getVars() ) as $i) {
                    $this->assignVar($obj->getVar($i, 'n') );
                }
            }
        }
    }

    /**
     * return the content of the block for output
	 * 
	 * @param string $format
	 * @param string $c_type type of content<br>
	 * Legal value for the type of content<br>
	 * <ul><li>H : custom HTML block
	 * <li>P : custom PHP block
	 * <li>S : use text sanitizater (smilies enabled)
	 * <li>T : use text sanitizater (smilies disabled)</ul>
	 * @return string content for output
     **/
    function &getContent($format = 'S', $c_type = 'T')
    {
        switch ( $format ) {
        case 'S':
            if ( $c_type == 'H' ) {
                return str_replace('{X_SITEURL}', XOOPS_URL.'/', $this->getVar('content', 'N'));
            } elseif ( $c_type == 'P' ) {
                ob_start();
                echo eval($this->getVar('content', 'N'));
                $content = ob_get_contents();
                ob_end_clean();
                return str_replace('{X_SITEURL}', XOOPS_URL.'/', $content);
            } elseif ( $c_type == 'S' ) {
                $myts =& MyTextSanitizer::getInstance();
                return str_replace('{X_SITEURL}', XOOPS_URL.'/', $myts->displayTarea($this->getVar('content', 'N'), 0, 1));
            } else {
                $myts =& MyTextSanitizer::getInstance();
                return str_replace('{X_SITEURL}', XOOPS_URL.'/', $myts->displayTarea($this->getVar('content', 'N'), 0, 0));
            }
            break;
        case 'E':
            return $this->getVar('content', 'E');
            break;
        default:
            return $this->getVar('content', 'N');
            break;
        }
    }

    /**
     * (HTML-) form for setting the options of the block
	 * 
	 * @return string HTML for the form, FALSE if not defined for this block 
     **/
    function getOptions()
    {
        if ($this->getVar('block_type') != 'C') {
            $edit_func = $this->getVar('edit_func');
            if (!$edit_func) {
                return false;
            }
            if (file_exists(XOOPS_ROOT_PATH.'/modules/'.$this->getVar('dirname').'/blocks/'.$this->getVar('func_file'))) {
                if (file_exists(XOOPS_ROOT_PATH.'/modules/'.$this->getVar('dirname').'/language/'.$GLOBALS['xoopsConfig']['language'].'/blocks.php')) {
                    include_once XOOPS_ROOT_PATH.'/modules/'.$this->getVar('dirname').'/language/'.$GLOBALS['xoopsConfig']['language'].'/blocks.php';
                } elseif (file_exists(XOOPS_ROOT_PATH.'/modules/'.$this->getVar('dirname').'/language/english/blocks.php')) {
                    include_once XOOPS_ROOT_PATH.'/modules/'.$this->getVar('dirname').'/language/english/blocks.php';
                }
                include_once XOOPS_ROOT_PATH.'/modules/'.$this->getVar('dirname').'/blocks/'.$this->getVar('func_file');
                $options = explode('|', $this->getVar('options'));
                $edit_form = $edit_func($options);
                if (!$edit_form) {
                    return false;
                }
                return $edit_form;
            } else {
                return false;
            }
        } else {
            return false;
        }
    }
}


/**
 * XOOPS block handler class. (Singelton)
 * 
 * This class is responsible for providing data access mechanisms to the data source 
 * of XOOPS block class objects. 
 *
 * @author  Kazumi Ono <onokazu@xoops.org>
 * @copyright copyright (c) 2000 XOOPS.org
 * @package kernel
 * @subpackage block
*/
class XoopsBlockHandler extends XoopsObjectHandler
{

    /**
     * create a new block
     * 
	 * @see XoopsBlock
	 * @param bool $isNew is the new block new??
	 * @return object XoopsBlock reference to the new block 
     **/
    function &create($isNew = true)
    {
        $block = new XoopsBlock();
        if ($isNew) {
            $block->setNew();
        }
        return $block;
    }

    /**
     * retrieve a specific {@link XoopsBlock}
     * 
	 * @see XoopsBlock
	 * @param int $id bid of the block to retrieve
	 * @return object XoopsBlock reference to the block 
     **/
    function &get($id)
    {
        $id = intval($id);
        if ($id > 0) {
            $sql = 'SELECT * FROM '.$this->db->prefix('newblocks').' WHERE bid='.$id;
            if (!$result = $this->db->query($sql)) {
                return false;
            }
            $numrows = $this->db->getRowsNum($result);
            if ($numrows == 1) {
                $block = new XoopsBlock();
                $block->assignVars($this->db->fetchArray($result));
                return $block;
            }
        }
        return false;
    }

    /**
     * write a new block into the database
     * 
	 * @param object XoopsBlock $block reference to the block to insert
	 * @return bool TRUE if succesful
     **/
    function insert(&$block)
    {
        if (strtolower(get_class($block)) != 'xoopsblock') {
            return false;
        }
        if (!$block->isDirty()) {
            return true;
        }
        if (!$block->cleanVars()) {
            return false;
        }
        foreach ($block->cleanVars as $k => $v) {
            ${$k} = $v;
        }
        if ($block->isNew()) {
            $bid = $this->db->genId('newblocks_bid_seq');
            $sql = sprintf("INSERT INTO %s (bid, mid, func_num, options, name, title, content, side, weight, visible, block_type, c_type, isactive, dirname, func_file, show_func, edit_func, template, bcachetime, last_modified) VALUES (%u, %u, %u, '%s', '%s', '%s', '%s', %u, %u, %u, '%s', '%s', %u, '%s', '%s', '%s', '%s', '%s', %u, %u)", $this->db->prefix('newblocks'), $bid, $mid, $func_num, $options, $name, $title, $content, $side, $weight, $visible, $block_type, $c_type, 1, $dirname, $func_file, $show_func, $edit_func, $template, $bcachetime, time());
        } else {
            $sql = sprintf("UPDATE %s SET func_num = %u, options = '%s', name = '%s', title = '%s', content = '%s', side = %u, weight = %u, visible = %u, c_type = '%s', isactive = %u, func_file = '%s', show_func = '%s', edit_func = '%s', template = '%s', bcachetime = %u, last_modified = %u WHERE bid = %u", $this->db->prefix('newblocks'), $func_num, $options, $name, $title, $content, $side, $weight, $visible, $c_type, $isactive, $func_file, $show_func, $edit_func, $template, $bcachetime, time(), $bid);
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        if (empty($bid)) {
            $bid = $this->db->getInsertId();
        }
		$block->assignVar('bid', $bid);
        return true;
    }

    /**
     * delete a block from the database
     * 
	 * @param object XoopsBlock $block reference to the block to delete 
	 * @return bool TRUE if succesful
     **/
    function delete(&$block)
    {
        if (strtolower(get_class($block)) != 'xoopsblock') {
            return false;
        }
        $id = $block->getVar('bid');
        $sql = sprintf("DELETE FROM %s WHERE bid = %u", $this->db->prefix('newblocks'), $id);
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        $sql = sprintf("DELETE FROM %s WHERE block_id = %u", $this->db->prefix('block_module_link'), $id);
        $this->db->query($sql);
        return true;
    }

    /**
     * retrieve array of {@link XoopsBlock}s meeting certain conditions
	 * @param object $criteria {@link CriteriaElement} with conditions for the blocks
	 * @param bool $id_as_key should the blocks' bid be the key for the returned array?
	 * @return array {@link XoopsBlock}s matching the conditions
     **/
    function &getObjects($criteria = null, $id_as_key = false)
    {
        $ret = array();
        $limit = $start = 0;
        $sql = 'SELECT DISTINCT(b.*) FROM '.$this->db->prefix('newblocks').' b LEFT JOIN '.$this->db->prefix('block_module_link').' l ON b.bid=l.block_id';
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
            $limit = $criteria->getLimit();
            $start = $criteria->getStart();
        }
        $result = $this->db->query($sql, $limit, $start);
        if (!$result) {
            return $ret;
        }
        while ($myrow = $this->db->fetchArray($result)) {
            $block = new XoopsBlock();
            $block->assignVars($myrow);
            if (!$id_as_key) {
                $ret[] =& $block;
            } else {
                $ret[$myrow['bid']] =& $block;
            }
            unset($block);
        }
        return $ret;
    }

    /**
     * get a list of blocks matchich certain conditions
	 * 
	 * @param string $criteria conditions to match
	 * @return array array of blocks matching the conditions 
     **/
    function &getList($criteria = null)
    {
        $blocks =& $this->getObjects($criteria, true);
        $ret = array();
        foreach (array_keys($blocks) as $i) {
            $name = ($blocks[$i]->getVar('block_type') != 'C') ? $blocks[$i]->getVar('name') : $blocks[$i]->getVar('title');
            $ret[$i] = $name;
        }
        return $ret;
    }
}
?>