filter/manage.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Lets users configure which filters are active in a sub-context.
  20  *
  21  * @license    http://www.gnu.org/copyleft/gpl.html GNU Public License
  22  * @package    core
  23  * @subpackage filter
  24  */
  25
  26 require_once(__DIR__ . '/../config.php');
  27 require_once($CFG->libdir . '/adminlib.php');
  28
  29 $contextid = required_param('contextid',PARAM_INT);
  30 $forfilter = optional_param('filter', '', PARAM_SAFEDIR);
  31 $returnto  = optional_param('return', null, PARAM_ALPHANUMEXT);
  32
  33 list($context, $course, $cm) = get_context_info_array($contextid);
  34
  35 /// Check login and permissions.
  36 require_login($course, false, $cm);
  37 require_capability('moodle/filter:manage', $context);
  38 $PAGE->set_context($context);
  39
  40 $args = array('contextid'=>$contextid);
  41 $baseurl = new moodle_url('/filter/manage.php', $args);
  42 if (!empty($forfilter)) {
  43     $args['filter'] = $forfilter;
  44 }
  45 $PAGE->set_url($baseurl, $args);
  46 if ($returnto !== null) {
  47     $baseurl->param('return', $returnto);
  48 }
  49
  50 // This is a policy decision, rather than something that would be impossible to implement.
  51 if (!in_array($context->contextlevel, array(CONTEXT_COURSECAT, CONTEXT_COURSE, CONTEXT_MODULE))) {
  52     print_error('cannotcustomisefiltersblockuser', 'error');
  53 }
  54
  55 $isfrontpage = ($context->contextlevel == CONTEXT_COURSE && $context->instanceid == SITEID);
  56
  57 $contextname = $context->get_context_name();
  58
  59 if ($context->contextlevel == CONTEXT_COURSECAT) {
  60     $heading = $SITE->fullname;
  61 } else if ($context->contextlevel == CONTEXT_COURSE) {
  62     $heading = $course->fullname;
  63 } else if ($context->contextlevel == CONTEXT_MODULE) {
  64     // Must be module context.
  65     $heading = $PAGE->activityrecord->name;
  66 } else {
  67     $heading = '';
  68 }
  69
  70 /// Check login and permissions.
  71 require_login($course, false, $cm);
  72 require_capability('moodle/filter:manage', $context);
  73
  74 $PAGE->set_context($context);
  75 $PAGE->set_heading($heading);
  76
  77 /// Get the list of available filters.
  78 $availablefilters = filter_get_available_in_context($context);
  79 if (!$isfrontpage && empty($availablefilters)) {
  80     print_error('nofiltersenabled', 'error');
  81 }
  82
  83 // If we are handling local settings for a particular filter, start processing.
  84 if ($forfilter) {
  85     if (!filter_has_local_settings($forfilter)) {
  86         print_error('filterdoesnothavelocalconfig', 'error', $forfilter);
  87     }
  88     require_once($CFG->dirroot . '/filter/local_settings_form.php');
  89     require_once($CFG->dirroot . '/filter/' . $forfilter . '/filterlocalsettings.php');
  90     $formname = $forfilter . '_filter_local_settings_form';
  91     $settingsform = new $formname($CFG->wwwroot . '/filter/manage.php', $forfilter, $context);
  92     if ($settingsform->is_cancelled()) {
  93         redirect($baseurl);
  94     } else if ($data = $settingsform->get_data()) {
  95         $settingsform->save_changes($data);
  96         redirect($baseurl);
  97     }
  98 }
  99
 100 /// Process any form submission.
 101 if ($forfilter == '' && optional_param('savechanges', false, PARAM_BOOL) && confirm_sesskey()) {
 102     foreach ($availablefilters as $filter => $filterinfo) {
 103         $newstate = optional_param($filter, false, PARAM_INT);
 104         if ($newstate !== false && $newstate != $filterinfo->localstate) {
 105             filter_set_local_state($filter, $context->id, $newstate);
 106         }
 107     }
 108     redirect($baseurl, get_string('changessaved'), 1);
 109 }
 110
 111 /// Work out an appropriate page title.
 112 if ($forfilter) {
 113     $a = new stdClass;
 114     $a->filter = filter_get_name($forfilter);
 115     $a->context = $contextname;
 116     $title = get_string('filtersettingsforin', 'filters', $a);
 117 } else {
 118     $title = get_string('filtersettingsin', 'filters', $contextname);
 119 }
 120 $straction = get_string('filters', 'admin'); // Used by tabs.php
 121
 122 // Print the header and tabs.
 123 $PAGE->set_cacheable(false);
 124 $PAGE->set_title($title);
 125 $PAGE->set_pagelayout('admin');
 126 echo $OUTPUT->header();
 127
 128 /// Print heading.
 129 echo $OUTPUT->heading_with_help($title, 'filtersettings', 'filters');
 130
 131 if (empty($availablefilters)) {
 132     echo '<p class="centerpara">' . get_string('nofiltersenabled', 'filters') . "</p>\n";
 133 } else if ($forfilter) {
 134     $current = filter_get_local_config($forfilter, $contextid);
 135     $settingsform->set_data((object) $current);
 136     $settingsform->display();
 137 } else {
 138     $settingscol = false;
 139     foreach ($availablefilters as $filter => $notused) {
 140         $hassettings = filter_has_local_settings($filter);
 141         $availablefilters[$filter]->hassettings = $hassettings;
 142         $settingscol = $settingscol || $hassettings;
 143     }
 144
 145     $strsettings = get_string('settings');
 146     $stroff = get_string('off', 'filters');
 147     $stron = get_string('on', 'filters');
 148     $strdefaultoff = get_string('defaultx', 'filters', $stroff);
 149     $strdefaulton = get_string('defaultx', 'filters', $stron);
 150     $activechoices = array(
 151         TEXTFILTER_INHERIT => '',
 152         TEXTFILTER_OFF => $stroff,
 153         TEXTFILTER_ON => $stron,
 154     );
 155
 156     echo html_writer::start_tag('form', array('action'=>$baseurl->out_omit_querystring(), 'method'=>'post'));
 157     echo html_writer::start_tag('div');
 158     echo html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
 159     foreach ($baseurl->params() as $key => $value) {
 160         echo html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$key, 'value'=>$value));
 161     }
 162
 163     $table = new html_table();
 164     $table->head  = array(get_string('filter'), get_string('isactive', 'filters'));
 165     $table->colclasses = array('leftalign', 'leftalign');
 166     if ($settingscol) {
 167         $table->head[] = $strsettings;
 168         $table->colclasses[] = 'leftalign';
 169     }
 170     $table->id = 'frontpagefiltersettings';
 171     $table->attributes['class'] = 'admintable generaltable';
 172     $table->data = array();
 173
 174     // iterate through filters adding to display table
 175     foreach ($availablefilters as $filter => $filterinfo) {
 176         $row = array();
 177
 178         // Filter name.
 179         $row[] = filter_get_name($filter);
 180
 181         // Default/on/off choice.
 182         if ($filterinfo->inheritedstate == TEXTFILTER_ON) {
 183             $activechoices[TEXTFILTER_INHERIT] = $strdefaulton;
 184         } else {
 185             $activechoices[TEXTFILTER_INHERIT] = $strdefaultoff;
 186         }
 187         $select = html_writer::label($filterinfo->localstate, 'menu'. $filter, false, array('class' => 'accesshide'));
 188         $select .= html_writer::select($activechoices, $filter, $filterinfo->localstate, false);
 189         $row[] = $select;
 190
 191         // Settings link, if required
 192         if ($settingscol) {
 193             $settings = '';
 194             if ($filterinfo->hassettings) {
 195                 $settings = '<a href="' . $baseurl->out(true, array('filter'=>$filter)). '">' . $strsettings . '</a>';
 196             }
 197             $row[] = $settings;
 198         }
 199
 200         $table->data[] = $row;
 201     }
 202
 203     echo html_writer::table($table);
 204     echo html_writer::start_tag('div', array('class'=>'buttons'));
 205     echo html_writer::empty_tag('input', array('type'=>'submit', 'name'=>'savechanges', 'value'=>get_string('savechanges')));
 206     echo html_writer::end_tag('div');
 207     echo html_writer::end_tag('div');
 208     echo html_writer::end_tag('form');
 209 }
 210
 211 /// Appropriate back link.
 212 if (!$isfrontpage) {
 213
 214     if ($context->contextlevel === CONTEXT_COURSECAT && $returnto === 'management') {
 215         $url = new moodle_url('/course/management.php', array('categoryid' => $context->instanceid));
 216     } else {
 217         $url = $context->get_url();
 218     }
 219
 220     echo html_writer::start_tag('div', array('class'=>'backlink'));
 221     echo html_writer::tag('a', get_string('backto', '', $contextname), array('href' => $url));
 222     echo html_writer::end_tag('div');
 223 }
 224
 225 echo $OUTPUT->footer();
 226