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egroupware_official/phpgwapi/inc/class.menutree.inc.php

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<?php
/**************************************************************************\
* phpGroupWare API - MenuTree *
* This file based on PHP3 TreeMenu *
* (c)1999 Bjorge Dijkstra <bjorge@gmx.net> *
* ------------------------------------------------------------------------ *
* This is not part of phpGroupWare, but is used by phpGroupWare. *
* http://www.phpgroupware.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. *
\**************************************************************************/
/* $Id$ */
/*********************************************/
/* Settings */
/*********************************************/
/* */
/* $treefile variable needs to be set in */
/* main file */
/* */
/*********************************************/
class menutree {
var $read_from_file; // You can send the tree info from a string or file
var $root_level_value; // This is what the top level name or image will be
var $last_column_size;
function menutree($read_from_file='text')
{
if($read_from_file == 'text')
{
$this->read_from_file = False;
}
elseif($read_from_file == 'file')
{
$this->read_from_file = True;
}
$this->set_lcs();
}
function set_lcs($size=300)
{
$this->last_column_size = $size;
}
function showtree($treefile, $expandlevels='', $num_menus = 50, $invisible_menus = Null)
{
global $phpgw_info, $phpgw, $SCRIPT_FILENAME, $REQUEST_URI;
$img_expand = $phpgw->common->image('manual','tree_expand.gif');
$img_collapse = $phpgw->common->image('manual','tree_collapse.gif');
$img_line = $phpgw->common->image('manual','tree_vertline.gif');
$img_split = $phpgw->common->image('manual','tree_split.gif');
$img_end = $phpgw->common->image('manual','tree_end.gif');
$img_leaf = $phpgw->common->image('manual','tree_leaf.gif');
$img_spc = $phpgw->common->image('manual','tree_space.gif');
/*********************************************/
/* Read text file with tree structure */
/*********************************************/
/*********************************************/
/* read file to $tree array */
/* tree[x][0] -> tree level */
/* tree[x][1] -> item text */
/* tree[x][2] -> item link */
/* tree[x][3] -> link target */
/* tree[x][4] -> last item in subtree */
/* tree[x][5] -> if item 2 is meant to be */
/* displayed, please list them */
/* here. */
/*********************************************/
$maxlevel=0;
$cnt=-1;
if($this->read_from_file)
{
$fd = fopen($treefile, 'r');
if($fd==0)
{
die("menutree.inc : Unable to open file ".$treefile);
}
settype($treefile,'array');
$treefile = array();
while($buffer = fgets($fd, 4096))
{
$treefile[] = buffer;
}
fclose($fd);
}
if(is_array($treefile))
{
$ta = $treefile;
}
elseif(gettype($treefile) == 'string')
{
$ta = explode("\n",$treefile);
}
reset($ta);
while (list($null,$buffer) = each($ta))
{
$cnt++;
$tree[$cnt][0]=strspn($buffer,".");
$tmp=rtrim(substr($buffer,$tree[$cnt][0]));
$node=explode('|',$tmp);
$tree[$cnt][1]=chop($node[0]);
$tree[$cnt][2]=chop($node[1]);
if(count($node)>2)
{
$tree[$cnt][3]=chop($node[2]);
}
$tree[$cnt][4]=0;
if(count($node) == 5)
{
$tree[$cnt][5]=$node[4];
}
if($tree[$cnt][0] > $maxlevel)
{
$maxlevel=$tree[$cnt][0];
}
}
$c_tree = count($tree);
for($i=0; $i<$c_tree; $i++)
{
// if($i!=0)
// {
$expand[$i]=0;
// }
// else
// {
// $expand[$i]=1;
// }
if($tree[$i][0] == 1)
{
$visible[$i]=1;
}
else
{
$visible[$i]=0;
}
$levels[$i]=0;
}
/*********************************************/
/* Get Node numbers to expand */
/*********************************************/
if($expandlevels!='')
{
$explevels = explode('|',$expandlevels);
$c_exp = count($explevels);
for($i=0;$i<$c_exp;$i++)
{
$expand[$explevels[$i]]=1;
}
}
else
{
$c_exp = 0;
}
/*********************************************/
/* Find last nodes of subtrees */
/*********************************************/
$lastlevel=$maxlevel;
for ($i=$c_tree - 1; $i>=1; $i -= 1)
{
if($tree[$i][0] < $tree[$i + 1][0])
{
for($j=$tree[$i][0] + 1; $j <= $maxlevel; $j++)
{
$levels[$j]=0;
}
}
if($levels[$tree[$i][0]]==0)
{
$levels[$tree[$i][0]]=1;
$tree[$i][4]=1;
}
else
{
$tree[$i][4]=0;
}
// $lastlevel=$tree[$i][0];
}
/*********************************************/
/* Determine visible nodes */
/*********************************************/
// $visible[0]=1; // root is always visible
// $visible[1]=1; // root is always visible
// $visible[2]=1; // root is always visible
// $visible[3]=1; // root is always visible
// $visible[4]=1; // root is always visible
// $visible[5]=1; // root is always visible
// $visible[6]=1; // root is always visible
// $visible[7]=1; // root is always visible
// $visible[8]=1; // root is always visible
// $visible[9]=1; // root is always visible
// $visible[10]=1; // root is always visible
// $visible[11]=1; // root is always visible
// $visible[12]=1; // root is always visible
// $visible[13]=1; // root is always visible
// $visible[14]=1; // root is always visible
// $visible[15]=1; // root is always visible
// $visible[16]=1; // root is always visible
// $visible[17]=1; // root is always visible
// $visible[18]=1; // root is always visible
// $visible[19]=1; // root is always visible
// $visible[20]=1; // root is always visible
// $visible[21]=1; // root is always visible
// $visible[22]=1; // root is always visible
// $visible[23]=1; // root is always visible
// $visible[24]=1; // root is always visible
// $visible[25]=1; // root is always visible
// $visible[26]=1; // root is always visible
// $visible[27]=1; // root is always visible
// $visible[28]=1; // root is always visible
for ($i=0; $i<$c_exp; $i++)
{
$n=$explevels[$i];
if(($visible[$n]==1) && ($expand[$n]==1))
{
for($j=$n+1;$tree[$j][0]>$tree[$n][0];$j++)
{
if($tree[$j][0]==$tree[$n][0]+1)
{
$visible[$j]=1;
}
}
}
}
/*********************************************/
/* Output nicely formatted tree */
/*********************************************/
// for($i=0; $i<$maxlevel; $i++)
// {
// $levels[$i]=1;
// }
$maxlevel++;
// $cnt=0;
$browser = CreateObject('phpgwapi.browser');
$browser->browser();
$browser_agent = $browser->get_agent();
switch($browser_agent)
{
case 'MOZILLA':
case 'NETSCAPE':
$text_size = 3;
break;
case 'IE':
$text_size = 2;
break;
}
$str = '';
for($cnt=0;$cnt<$c_tree - 1;$cnt++)
{
if(!$visible[$cnt])
{
continue;
}
/****************************************/
/* Create expand/collapse parameters */
/****************************************/
$params='p=';
for($i=0;$i<=$c_tree;$i++)
{
if(($expand[$i]==1) && ($cnt!=$i) || (($expand[$i]==0 && $cnt==$i) && ($tree[$cnt+1][0]>$tree[$cnt][0])))
{
if($params != 'p=')
{
$params .= '|';
}
$params .= $i;
}
}
if($params=='p=')
{
$params='';
}
// if($params != '')
// {
// $params = '&'.$params;
// }
/****************************************/
/* Always display the extreme top level */
/****************************************/
if($cnt==0)
{
// $str = '<table cellspacing="0" cellpadding="0" border="0" cols="'.($maxlevel+3).'" width="'.($maxlevel*16+100).'">'."\n";
$str = '<table cellspacing="0" cellpadding="0" border="0" cols="'.($maxlevel+3).'" width="'.($maxlevel * 16 + $this->last_column_size).'">'."\n";
$str .= '<a href="' . $phpgw->link('/'.$phpgw_info['flags']['currentapp'].'/index.php',$params) . '" target="_parent">' . $this->root_level_value . '</a>';
$str .= "\n".'<tr>';
for ($k=0; $k<$maxlevel; $k++)
{
$str .= '<td width=16></td>';
}
$str .= '<td width='.$this->last_column_size.'></td></tr>'."\n";
}
/****************************************/
/* start new row */
/****************************************/
$str .= '<tr>';
/****************************************/
/* vertical lines from higher levels */
/****************************************/
$i=0;
while ($i<$tree[$cnt][0]-1)
{
if ($levels[$i]==1)
{
$str .= '<td><img src="' . $img_line . '" alt="|"></td>';
}
else
{
$str .= '<td><img src="' . $img_spc . '" alt=" "></td>';
}
$i++;
}
/****************************************/
/* corner at end of subtree or t-split */
/****************************************/
if ($tree[$cnt][4]==1)
{
$str .= '<td><img src="' . $img_end . '" alt="\"></td>';
$levels[$tree[$cnt][0]-1]=0;
}
else
{
$str .= '<td><img src="' . $img_split . '" alt="|-"></td>';
$levels[$tree[$cnt][0]-1]=1;
}
/********************************************/
/* Node (with subtree) or Leaf (no subtree) */
/********************************************/
if($tree[$cnt+1][0]>$tree[$cnt][0])
{
$src = $REQUEST_URI;
if(ereg('[\?\&]p=',$src) != 0)
{
$src = ereg_replace('[\?\&]p=([0-9\|])+','',$REQUEST_URI);
}
// echo 'Src = '.$src."<br>\n";
if(strpos(' '.$src,'?'))
{
$extra_param = '&';
}
else
{
$extra_param = '?';
}
if($expand[$cnt]==0)
{
// $str .= '<td><a href="'.$phpgw->link('/'.$phpgw_info['flags']['currentapp'].'/'.basename($SCRIPT_FILENAME),$params).'"><img src="'.$img_expand.'" border="no" alt="+"></a></td>';
$str .= '<td><a href="'.$src.$extra_param.$params.'"><img src="'.$img_expand.'" border="no" alt="+"></a></td>';
}
else
{
// $str .= '<td><a href="'.$phpgw->link('/'.$phpgw_info['flags']['currentapp'].'/'.basename($SCRIPT_FILENAME),$params).'"><img src="'.$img_collapse.'" border="no" alt="-"></a></td>';
$str .= '<td><a href="'.$src.$extra_param.$params.'"><img src="'.$img_collapse.'" border="no" alt="-"></a></td>';
}
}
elseif(isset($tree[$cnt+1][0]))
{
/*************************/
/* Tree Leaf */
/*************************/
$str .= '<td><img src="' . $img_leaf . '" alt="o"></td>';
}
/****************************************/
/* output item text */
/****************************************/
$str .= '<td colspan="'.($maxlevel-$tree[$cnt][0]).'"><font face="'.$phpgw_info['theme']['font'].'" size="'.$text_size.'">';
if ($tree[$cnt][5]=='')
{
if ($tree[$cnt][2]=='')
{
$str .= $tree[$cnt][1];
}
else
{
if(strpos(' '.$tree[$cnt][2],'?'))
{
$extra_param = '&';
}
else
{
$extra_param = '?';
}
$str .= '<a href="'.$tree[$cnt][2].$extra_param.$params.'" target="'.$tree[$cnt][3].'">'.$tree[$cnt][1].'</a>';
}
}
else
{
$str .= $tree[$cnt][5];
}
$str .= '</font></td>';
/****************************************/
/* end row */
/****************************************/
$str .= '</tr>'."\n";
}
$str .= '</table>'."\n";
return $str;
/***************************************************/
/* Tree file format */
/* */
/* */
/* The first line is always of format : */
/* .[rootname] */
/* */
/* each line contains one item, the line starts */
/* with a series of dots(.). Each dot is one level */
/* deeper. Only one level at a time once is allowed*/
/* Next comes the come the item name, link and */
/* link target, seperated by a |. */
/* */
/* example: */
/* */
/* .top */
/* ..category 1 */
/* ...item 1.1|item11.htm|main */
/* ...item 2.2|item12.htm|main */
/* ..category 2|cat2overview.htm|main */
/* ...item 2.1|item21.htm|main */
/* ...item 2.2|item22.htm|main */
/* ...item 2.3|item23.htm|main */
/* */
/***************************************************/
}
}
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