File Source for link.php

<?php
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2008 Dokeos SPRL
Copyright (c) 2003-2005 Ghent University (UGent)
Copyright (c) 2001 Universite catholique de Louvain (UCL)
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
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.
See the GNU General Public License for more details.
Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
/**
==============================================================================
* Main script for the links tool.
*
* Features:
* - Organize links into categories;
* - favorites/bookmarks-like interface;
* - move links up/down within a category;
* - move categories up/down;
* - expand/collapse all categories (except the main "non"-category);
* - add link to 'root' category => category-less link is always visible.
*
* @author Patrick Cool, main author, completely rewritten
* @author Rene Haentjens, added CSV file import (October 2004)
* @package dokeos.link
* @todo improve organisation, tables should come from database library
==============================================================================
*/
/*
==============================================================================
INIT SECTION
==============================================================================
*/
// name of the language file that needs to be included
$language_file = "link";
// including libraries
include("../inc/global.inc.php");
include(api_get_path(LIBRARY_PATH).'events.lib.inc.php');
include("linkfunctions.php");
$this_section=SECTION_COURSES;
api_protect_course_script();
// @todo change the $_REQUEST into $_POST or $_GET
// @todo remove this code
$link_submitted = (!empty($_POST['submitLink'])?$_POST['submitLink']:'');
$category_submitted = (!empty($_POST['submitCategory'])?$_POST['submitCategory']:'');
$urlview = (!empty($_GET['urlview'])?$_GET['urlview']:'');
$submitImport = (!empty($_POST['submitImport'])?$_POST['submitImport']:'');
$down = (!empty($_GET['down'])?$_GET['down']:'');
$up = (!empty($_GET['up'])?$_GET['up']:'');
$catmove = (!empty($_GET['catmove'])?$_GET['catmove']:'');
$editlink = (!empty($_REQUEST['editlink'])?$_REQUEST['editlink']:'');
$id = (!empty($_REQUEST['id'])?$_REQUEST['id']:'');
$urllink = (!empty($_REQUEST['urllink'])?$_REQUEST['urllink']:'');
$title = (!empty($_REQUEST['title'])?$_REQUEST['title']:'');
$description = (!empty($_REQUEST['description'])?$_REQUEST['description']:'');
$selectcategory = (!empty($_REQUEST['selectcategory'])?$_REQUEST['selectcategory']:'');
$submitLink = (!empty($_REQUEST['submitLink'])?$_REQUEST['submitLink']:'');
$action = (!empty($_REQUEST['action'])?$_REQUEST['action']:'');
$category_title = (!empty($_REQUEST['category_title'])?$_REQUEST['category_title']:'');
$submitCategory = (!empty($_REQUEST['submitCategory'])?$_REQUEST['submitCategory']:'');
$nameTools = get_lang('Links');
if (isset($_GET['action']) && $_GET['action']=='addlink')
{
$nameTools = '';
$interbreadcrumb[] = array ('url' => 'link.php', 'name' => get_lang('Links'));
$interbreadcrumb[] = array ('url' => 'link.php?action=addlink', 'name' => get_lang('AddLink'));
}
if (isset($_GET['action']) && $_GET['action']=='addcategory')
{
$nameTools = '';
$interbreadcrumb[] = array ('url' => 'link.php', 'name' => get_lang('Links'));
$interbreadcrumb[] = array ('url' => 'link.php?action=addcategory', 'name' => get_lang('AddCategory'));
}
if (isset($_GET['action']) && $_GET['action']=='editlink')
{
$nameTools = '';
$interbreadcrumb[] = array ('url' => 'link.php', 'name' => get_lang('Links'));
$interbreadcrumb[] = array ('url' => '#', 'name' => get_lang('EditLink'));
}
// Database Table definitions
$tbl_link = Database::get_course_table(TABLE_LINK);
$tbl_categories = Database::get_course_table(TABLE_LINK_CATEGORY);
//statistics
event_access_tool(TOOL_LINK);
Display::display_header($nameTools, 'Links');
?>
<script type="text/javascript">
/* <![CDATA[ */
function MM_popupMsg(msg) { //v1.0
confirm(msg);
}
/* ]]> */
</script>
<?php
/*
-----------------------------------------------------------
Action Handling
-----------------------------------------------------------
*/
$nameTools = get_lang("Links");
if(isset($_GET['action']))
{
switch($_GET['action'])
{
case "addlink":
if($link_submitted)
{
if(!addlinkcategory("link")) // here we add a link
{
unset($submitLink);
}
}
break;
case "addcategory":
if($category_submitted)
{
if(!addlinkcategory("category")) // here we add a category
{
unset($submitCategory);
}
}
break;
case "importcsv":
if($_POST["submitImport"])
{
import_csvfile();
}
break;
case "deletelink":
deletelinkcategory("link"); // here we delete a link
break;
case "deletecategory":
deletelinkcategory("category"); // here we delete a category
break;
case "editlink":
editlinkcategory("link"); // here we edit a link
break;
case "editcategory":
editlinkcategory("category"); // here we edit a category
break;
case "visible":
change_visibility($_GET['id'],$_GET['scope']); // here we edit a category
break;
case "invisible":
change_visibility($_GET['id'],$_GET['scope']); // here we edit a category
break;
}
}
/*
-----------------------------------------------------------
Introduction section
-----------------------------------------------------------
*/
Display::display_introduction_section(TOOL_LINK);
if (is_allowed_to_edit() and isset($_GET['action']))
{
// Displaying the correct title and the form for adding a category or link. This is only shown when nothing
// has been submitted yet, hence !isset($submitLink)
if (($_GET['action']=="addlink" or $_GET['action']=="editlink") and empty($_POST['submitLink']))
{
echo "<h4>";
if ($_GET['action']=="addlink")
{echo get_lang("LinkAdd");}
else
{echo get_lang("LinkMod");}
echo "</h4>\n\n";
if ($category=="")
{$category=0;}
echo "<form method=\"post\" action=\"".api_get_self()."?action=".$_GET['action']."&urlview=".$urlview."\">";
if ($_GET['action']=="editlink")
{
echo "<input type=\"hidden\" name=\"id\" value=\"".$_GET['id']."\" />";
}
echo "<table><tr>"
. "<td align=\"right\">URL<span class=\"required\">*</span> :</td>"
. "<td><input type=\"text\" name=\"urllink\" size=\"50\" value=\"" . (empty($urllink)?'http://':htmlentities($urllink)) . "\" /></td>" . "</tr>";
echo "<tr>"
. "<td align=\"right\">" . get_lang("LinkName") . " :</td>"
. "<td><input type=\"text\" name=\"title\" size=\"50\" value=\"" . htmlentities($title,ENT_QUOTES,$charset) . "\" /></td>"
. "</tr>"
. "<tr>" .
"<td align=\"right\" valign=\"top\">" . get_lang("Description") . " :</td>" .
"<td><textarea rows=\"3\" cols=\"50\" name=\"description\">" .
htmlentities($description,ENT_QUOTES,$charset) . "</textarea></td></tr>";
$sqlcategories="SELECT * FROM ".$tbl_categories." ORDER BY display_order DESC";
$resultcategories = api_sql_query($sqlcategories)or die("Error: " . mysql_error());
if(mysql_num_rows($resultcategories))
{
echo "<tr><td align=\"right\">".get_lang("Category")." :</td><td>",
"<select name=\"selectcategory\">",
"<option value=\"0\">--</option>";
while ($myrow = mysql_fetch_array($resultcategories))
{
echo "<option value=\"".$myrow["id"]."\"";
if ($myrow["id"]==$category)
{echo " selected";}
echo ">".$myrow["category_title"]."</option>";
}
echo "</select></td></tr>";
}
echo "<tr><td align=\"right\">".get_lang("OnHomepage")." ? </td><td><input class=\"checkbox\" type=\"checkbox\" name=\"onhomepage\" id=\"onhomepage\" value=\"1\" $onhomepage><label for=\"onhomepage\"> ".get_lang("Yes")."</label></td></tr>";
echo "<tr><td></td><td><input type=\"Submit\" name=\"submitLink\" value=\"".get_lang("Ok")."\" /></td></tr>",
"</table>",
"</form>";
}
elseif(($_GET['action']=="addcategory" or $_GET['action']=="editcategory") and !$submitCategory)
{
echo "<h4>";
if ($_GET['action']=="addcategory")
{echo get_lang("CategoryAdd");}
else
{echo get_lang("CategoryMod");}
echo "</h4>\n\n";
echo "<form method=\"post\" action=\"".api_get_self()."?action=".$_GET['action']."&urlview=".$urlview."\">";
if ($_GET['action']=="editcategory")
{
echo "<input type=\"hidden\" name=\"id\" value=\"".$id."\" />";
}
echo "<table><tr>",
"<td align=\"right\">".get_lang("CategoryName")."<span class=\"required\">*</span> :</td>",
"<td><input type=\"text\" name=\"category_title\" size=\"50\" value=\"",htmlentities($category_title,ENT_QUOTES,$charset)."\" /></td>",
"</tr>",
"<tr><td align=\"right\" valign=\"top\">".get_lang("Description")." :</td>",
"<td><textarea rows=\"3\" cols=\"50\" name=\"description\">",htmlentities($description,ENT_QUOTES,$charset)."</textarea></td></tr>",
"<tr><td></td><td><input type=\"Submit\" name=\"submitCategory\" value=\"".get_lang("Ok")."\" /></td></tr>",
"</table>",
"</form>";
}
/*elseif(($_GET['action']=="importcsv") and !$submitImport) // RH start
{
echo "<h4>", get_lang('CsvImport'), "</h4>\n\n",
"<form method=\"post\" action=\"".api_get_self()."?action=".$_GET['action']."&urlview=".$urlview."\" enctype=\"multipart/form-data\">",
// uncomment if you want to set a limit: '<input type="hidden" name="MAX_FILE_SIZE" value="32768">', "\n",
'<input type="file" name="import_file" size="30">', "\n",
"<input type=\"Submit\" name=\"submitImport\" value=\"".get_lang('Ok')."\">",
"</form>";
echo get_lang('CsvExplain');
}*/
}
if (!empty($down))
{
movecatlink($down);
}
if (!empty($up))
{
movecatlink($up);
}
if (empty($_GET['action']) || ($_GET['action']!='editlink' && $_GET['action']!='addcategory' && $_GET['action']!='addlink') || $link_submitted || $category_submitted)
{
/*
-----------------------------------------------------------
Action Links
-----------------------------------------------------------
*/
if(is_allowed_to_edit())
{
echo Display::return_icon('file_html_new.gif')." <a href=\"".api_get_self()."?".api_get_cidreq()."&action=addlink&category=".(!empty($category)?$category:'')."&urlview=$urlview\">".get_lang("LinkAdd")."</a>\n";
echo Display::return_icon('folder_new.gif')." <a href=\"".api_get_self()."?".api_get_cidreq()."&action=addcategory&urlview=".$urlview."\">".get_lang("CategoryAdd")."</a>\n";
/* "<a href=\"".api_get_self()."?".api_get_cidreq()."&action=importcsv&urlview=".$urlview."\">".get_lang('CsvImport')."</a>\n", // RH*/
}
//making the show none / show all links. Show none means urlview=0000 (number of zeros depending on the
//number of categories). Show all means urlview=1111 (number of 1 depending on teh number of categories).
$sqlcategories="SELECT * FROM ".$tbl_categories." ORDER BY display_order DESC";
$resultcategories=api_sql_query($sqlcategories);
$aantalcategories = @mysql_num_rows($resultcategories);
echo Display::return_icon('remove.gif')." <a href=\"".api_get_self()."?".api_get_cidreq()."&urlview=";
for($j = 1; $j <= $aantalcategories; $j++)
{
echo "0";
}
echo "\">$shownone</a>";
echo Display::return_icon('add.gif')." <a href=\"".api_get_self()."?".api_get_cidreq()."&urlview=";
for($j = 1; $j <= $aantalcategories; $j++)
{
echo "1";
}
echo "\">$showall</a>";
//Starting the table which contains the categories
$sqlcategories="SELECT * FROM ".$tbl_categories." ORDER BY display_order DESC";
$resultcategories=api_sql_query($sqlcategories);
echo '<br /><br /><table class="data_table">';
// displaying the links which have no category (thus category = 0 or NULL), if none present this will not be displayed
$sqlLinks = "SELECT * FROM ".$tbl_link." WHERE category_id=0 or category_id IS NULL";
$result = api_sql_query($sqlLinks);
$numberofzerocategory=mysql_num_rows($result);
if ($numberofzerocategory!==0)
{
echo "<tr><th style=\"font-weight: bold; text-align:left;padding-left: 10px;\"><i>".get_lang('General')."</i></th></tr>";
echo '</table>';
showlinksofcategory(0);
}
$i=0;
$catcounter=1;
$view="0";
while ($myrow=@mysql_fetch_array($resultcategories))
{
if (!isset($urlview))
{
// No $view set in the url, thus for each category link it should be all zeros except it's own
makedefaultviewcode($i);
}
else
{
$view=$urlview;
$view[$i]="1";
}
// if the $urlview has a 1 for this categorie, this means it is expanded and should be desplayed as a
// - instead of a +, the category is no longer clickable and all the links of this category are displayed
$myrow["description"]=text_filter($myrow["description"]);
if ($urlview[$i]=="1")
{
$newurlview=$urlview;
$newurlview[$i]="0";
echo '<tr>';
echo '<table class="data_table">';
echo '<tr>';
echo '<th width="81%" style="font-weight: bold; text-align:left;padding-left: 5px;">';
echo '<a href="'.api_get_self()."?".api_get_cidreq()."&urlview=".$newurlview."\">";
echo "<img src=../img/remove.gif>  ".htmlentities($myrow["category_title"],ENT_QUOTES,$charset)."</a><br/>   ".$myrow["description"];
if (is_allowed_to_edit())
{
echo '<th>';
showcategoryadmintools($myrow["id"]);
echo '</th>';
}
echo '</th>';
echo '</tr>';
echo '</table>';
echo showlinksofcategory($myrow["id"]);
echo '</tr>';
}
else
{
echo '<tr>';
echo '<table class="data_table">';
echo '<tr>';
echo '<th width="81%" style="font-weight: bold; text-align:left;padding-left: 5px;"><a href="'.api_get_self()."?".api_get_cidreq()."&urlview=";
echo is_array($view)?implode('',$view):$view;
echo "\"><img src=../img/add.gif>  ". htmlentities($myrow["category_title"],ENT_QUOTES,$charset);
echo'</a><br />   ';
echo $myrow["description"];
if (is_allowed_to_edit())
{
echo '<th style="text-align:center;">';
showcategoryadmintools($myrow["id"]);
echo '</th>';
}
echo '</th>';
echo '</tr>';
echo '</table>';
echo '</tr>';
}
// displaying the link of the category
$i++;
}
echo '</table>';
////////////////////////////////////////////////////////////////////////////
}
Display::display_footer();
?>

Source for file link.php