group/index.php

   1 <?php
   2 /**
   3  * The main group management user interface.
   4  *
   5  * @copyright &copy; 2006 The Open University
   6  * @author N.D.Freear AT open.ac.uk
   7  * @author J.White AT open.ac.uk
   8  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   9  * @package groups
  10  */
  11 require_once('../config.php');
  12 require_once('lib.php');
  13 require_once($CFG->libdir.'/json/JSON.php');
  14
  15 require_js('yui_yahoo');
  16 require_js('yui_dom');
  17 require_js('yui_utilities');
  18 require_js('yui_connection');
  19 require_js($CFG->wwwroot.'/group/clientlib.js');
  20
  21 $courseid = required_param('id', PARAM_INT);
  22 $groupid  = optional_param('group', false, PARAM_INT);
  23 $userid   = optional_param('user', false, PARAM_INT);
  24 $action   = groups_param_action();
  25
  26 $returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid;
  27
  28 // Get the course information so we can print the header and
  29 // check the course id is valid
  30
  31 if (!$course = get_record('course', 'id',$courseid)) {
  32     $success = false;
  33     print_error('invalidcourse'); //'The course ID is invalid'
  34 }
  35
  36 // Make sure that the user has permissions to manage groups.
  37 require_login($course);
  38
  39 $context = get_context_instance(CONTEXT_COURSE, $courseid);
  40 if (! has_capability('moodle/course:managegroups', $context)) {
  41     redirect(); //"group.php?id=$course->id");   // Not allowed to see all groups
  42 }
  43
  44 switch ($action) {
  45     case false: //OK, display form.
  46         break;
  47
  48     case 'ajax_getmembersingroup':
  49         $members = array();
  50         if ($members = groups_get_members($groupid)) {
  51             $member_names = array();
  52             foreach($members as $member) {
  53                 $user = new object();
  54                 $user->id   = $member->id;
  55                 $user->name = fullname($member, true);
  56                 $member_names[] = $user;
  57             }
  58             $json = new Services_JSON();
  59             echo $json->encode($member_names);
  60         }
  61         die;  // Client side JavaScript takes it from here.
  62
  63     case 'deletegroup':
  64         redirect('group.php?delete=1&amp;courseid='.$courseid.'&amp;id='.$groupid);
  65         break;
  66
  67     case 'showcreateorphangroupform':
  68         redirect('group.php?courseid='.$courseid);
  69         break;
  70
  71     case 'showgroupsettingsform':
  72         redirect('group.php?courseid='.$courseid.'&amp;id='.$groupid);
  73         break;
  74
  75     case 'updategroups': //Currently reloading.
  76         break;
  77
  78     case 'removemembers':
  79         break;
  80
  81     case 'showaddmembersform':
  82         redirect('members.php?group='.$groupid);
  83         break;
  84
  85     case 'updatemembers': //Currently reloading.
  86         break;
  87
  88     default: //ERROR.
  89         if (debugging()) {
  90             error('Error, unknown button/action. Probably a user-interface bug!', $returnurl);
  91         break;
  92     }
  93 }
  94
  95 // Print the page and form
  96 $strgroups = get_string('groups');
  97 $strparticipants = get_string('participants');
  98
  99 $navlinks = array(array('name'=>$strparticipants, 'link'=>$CFG->wwwroot.'/user/index.php?id='.$courseid, 'type'=>'misc'),
 100                   array('name'=>$strgroups, 'link'=>'', 'type'=>'misc'));
 101 $navigation = build_navigation($navlinks);
 102
 103 /// Print header
 104 print_header_simple($strgroups, ': '.$strgroups, $navigation, '', '', true, '', navmenu($course));
 105
 106 if (!empty($CFG->enablegroupings)) {
 107     // Add tabs
 108     $currenttab = 'groups';
 109     require('tabs.php');
 110 }
 111
 112 $disabled = 'disabled="disabled"';
 113
 114 $showeditgroupsettingsform_disabled = $disabled;
 115 $deletegroup_disabled = $disabled;
 116 $showcreategroupform_disabled = $disabled;
 117
 118 if (!empty($groupid)) {
 119     $showaddmembersform_disabled = '';
 120     $showeditgroupsettingsform_disabled = '';
 121     $deletegroup_disabled = '';
 122 } else {
 123     $deletegroup_disabled = $disabled;
 124     $showeditgroupsettingsform_disabled = $disabled;
 125     $showaddmembersform_disabled = $disabled;
 126 }
 127
 128 print_heading(format_string($course->shortname) .' '.$strgroups, 'center', 3);
 129 echo '<form id="groupeditform" action="index.php" method="post">'."\n";
 130 echo '<div>'."\n";
 131 echo '<input type="hidden" name="id" value="' . $courseid . '" />'."\n";
 132
 133 echo '<table cellpadding="6" class="generaltable generalbox groupmanagementtable boxaligncenter" summary="">'."\n";
 134 echo '<tr>'."\n";
 135
 136
 137 echo "<td>\n";
 138 // NO GROUPINGS YET!
 139 echo '<p><label for="groups"><span id="groupslabel">'.get_string('groups').':</span><span id="thegrouping">&nbsp;</span></label></p>'."\n";
 140
 141 echo '<select name="group" id="groups" size="15" class="select" onchange="membersCombo.refreshMembers(this.options[this.selectedIndex].value);"'."\n";
 142 echo ' onclick="window.status=this.options[this.selectedIndex].title;" onmouseout="window.status=\'\';">'."\n";
 143
 144 $groups = groups_get_all_groups($courseid);
 145
 146 $sel_groupid = 0;
 147
 148 if ($groups) {
 149     // Print out the HTML
 150     foreach ($groups as $group) {
 151         $select = '';
 152         if ($groupid == $group->id) {
 153             $select = ' selected="selected"';
 154             $sel_groupid = $group->id;
 155         }
 156         $usercount = (int)count_records('groups_members', 'groupid', $group->id);
 157         $groupname = format_string($group->name).' ('.$usercount.')';
 158
 159         echo "<option value=\"{$group->id}\"$select title=\"$groupname\">$groupname</option>\n";
 160     }
 161 } else {
 162     // Print an empty option to avoid the XHTML error of having an empty select element
 163     echo '<option>&nbsp;</option>';
 164 }
 165
 166 echo '</select>'."\n";
 167 echo '<p><input type="submit" name="act_updatemembers" id="updatemembers" value="'
 168         . get_string('showmembersforgroup', 'group') . '" /></p>'."\n";
 169 echo '<p><input type="submit" '. $showeditgroupsettingsform_disabled . ' name="act_showgroupsettingsform" id="showeditgroupsettingsform" value="'
 170         . get_string('editgroupsettings', 'group') . '" /></p>'."\n";
 171 echo '<p><input type="submit" '. $deletegroup_disabled . ' name="act_deletegroup" onclick="onDeleteGroup()" id="deletegroup" value="'
 172         . get_string('deleteselectedgroup', 'group') . '" /></p>'."\n";
 173
 174 echo '<p><input type="submit" name="act_showcreateorphangroupform" id="showcreateorphangroupform" value="'
 175         . get_string('creategroup', 'group') . '" /></p>'."\n";
 176
 177 echo '</td>'."\n";
 178 echo '<td>'."\n";
 179 echo '<p><label for="members"><span id="memberslabel">'.get_string('membersofselectedgroup', 'group').' </span><span id="thegroup">&nbsp;</span></label></p>'."\n";
 180 //NOTE: the SELECT was, multiple="multiple" name="user[]" - not used and breaks onclick.
 181 echo '<select name="user" id="members" size="15" class="select"'."\n";
 182 echo ' onclick="window.status=this.options[this.selectedIndex].title;" onmouseout="window.status=\'\';">'."\n";
 183
 184 $member_names = array();
 185
 186 if ($sel_groupid) {
 187     if ($members = groups_get_members($groupid)) {
 188         foreach($members as $member) {
 189             $member_names[$member->id] = fullname($member, true);
 190         }
 191     }
 192 }
 193
 194 if ($member_names) {
 195     // Put the groupings into a hash and sort them
 196     foreach ($member_names as $userid=>$username) {
 197         echo "<option value=\"{$userid}\" title=\"{$username}\">{$username}</option>\n";
 198     }
 199
 200 } else {
 201     // Print an empty option to avoid the XHTML error of having an empty select element
 202     echo '<option>&nbsp;</option>';
 203 }
 204
 205 echo '</select>'."\n";
 206
 207 echo '<p><input type="submit" ' . $showaddmembersform_disabled . ' name="act_showaddmembersform" '
 208         . 'id="showaddmembersform" value="' . get_string('adduserstogroup', 'group'). '" /></p>'."\n";
 209 echo '</td>'."\n";
 210 echo '</tr>'."\n";
 211 echo '</table>'."\n";
 212
 213 //<input type="hidden" name="rand" value="om" />
 214 echo '</div>'."\n";
 215 echo '</form>'."\n";
 216
 217 echo '<script type="text/javascript">'."\n";
 218 echo '//<![CDATA['."\n";
 219 echo 'var groupsCombo = new UpdatableGroupsCombo("'.$CFG->wwwroot.'", '.$course->id.');'."\n";
 220 echo 'var membersCombo = new UpdatableMembersCombo("'.$CFG->wwwroot.'", '.$course->id.');'."\n";
 221 echo '//]]>'."\n";
 222 echo '</script>'."\n";
 223
 224 print_footer($course);
 225
 226 /**
 227  * Returns the first button action with the given prefix, taken from
 228  * POST or GET, otherwise returns false.
 229  * See /lib/moodlelib.php function optional_param.
 230  * @param $prefix 'act_' as in 'action'.
 231  * @return string The action without the prefix, or false if no action found.
 232  */
 233 function groups_param_action($prefix = 'act_') {
 234     $action = false;
 235 //($_SERVER['QUERY_STRING'] && preg_match("/$prefix(.+?)=(.+)/", $_SERVER['QUERY_STRING'], $matches)) { //b_(.*?)[&;]{0,1}/
 236
 237     if ($_POST) {
 238         $form_vars = $_POST;
 239     }
 240     elseif ($_GET) {
 241         $form_vars = $_GET;
 242     }
 243     if ($form_vars) {
 244         foreach ($form_vars as $key => $value) {
 245             if (preg_match("/$prefix(.+)/", $key, $matches)) {
 246                 $action = $matches[1];
 247                 break;
 248             }
 249         }
 250     }
 251     if ($action && !preg_match('/^\w+$/', $action)) {
 252         $action = false;
 253         error('Action had wrong type.');
 254     }
 255     ///if (debugging()) echo 'Debug: '.$action;
 256     return $action;
 257 }
 258
 259 ?>