admin/renderer.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Renderer for core_admin subsystem
  19  *
  20  * @package    core
  21  * @subpackage admin
  22  * @copyright  2011 David Mudrak <david@moodle.com>
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 require_once($CFG->libdir . '/pluginlib.php');
  29
  30 /**
  31  * Standard HTML output renderer for core_admin subsystem
  32  */
  33 class core_admin_renderer extends plugin_renderer_base {
  34
  35     /**
  36      * Display the 'Do you acknowledge the terms of the GPL' page. The first page
  37      * during install.
  38      * @return string HTML to output.
  39      */
  40     public function install_licence_page() {
  41         global $CFG;
  42         $output = '';
  43
  44         $copyrightnotice = text_to_html(get_string('gpl3'));
  45         $copyrightnotice = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $copyrightnotice); // extremely ugly validation hack
  46
  47         $continue = new single_button(new moodle_url('/admin/index.php', array('lang'=>$CFG->lang, 'agreelicense'=>1)), get_string('continue'), 'get');
  48
  49         $output .= $this->header();
  50         $output .= $this->heading('<a href="http://moodle.org">Moodle</a> - Modular Object-Oriented Dynamic Learning Environment');
  51         $output .= $this->heading(get_string('copyrightnotice'));
  52         $output .= $this->box($copyrightnotice, 'copyrightnotice');
  53         $output .= html_writer::empty_tag('br');
  54         $output .= $this->confirm(get_string('doyouagree'), $continue, "http://docs.moodle.org/dev/License");
  55         $output .= $this->footer();
  56
  57         return $output;
  58     }
  59
  60     /**
  61      * Display page explaining proper upgrade process,
  62      * there can not be any PHP file leftovers...
  63      *
  64      * @return string HTML to output.
  65      */
  66     public function upgrade_stale_php_files_page() {
  67         $output = '';
  68         $output .= $this->header();
  69         $output .= $this->heading(get_string('upgradestalefiles', 'admin'));
  70         $output .= $this->box_start('generalbox', 'notice');
  71         $output .= get_string('upgradestalefilesinfo', 'admin', get_docs_url('Upgrading'));
  72         $output .= html_writer::empty_tag('br');
  73         $output .= html_writer::tag('div', $this->single_button($this->page->url, get_string('reload'), 'get'), array('class' => 'buttons'));
  74         $output .= $this->box_end();
  75         $output .= $this->footer();
  76
  77         return $output;
  78     }
  79
  80     /**
  81      * Display the 'environment check' page that is displayed during install.
  82      * @param int $maturity
  83      * @param boolean $envstatus final result of the check (true/false)
  84      * @param array $environment_results array of results gathered
  85      * @param string $release moodle release
  86      * @return string HTML to output.
  87      */
  88     public function install_environment_page($maturity, $envstatus, $environment_results, $release) {
  89         global $CFG;
  90         $output = '';
  91
  92         $output .= $this->header();
  93         $output .= $this->maturity_warning($maturity);
  94         $output .= $this->heading("Moodle $release");
  95         $output .= $this->release_notes_link();
  96
  97         $output .= $this->environment_check_table($envstatus, $environment_results);
  98
  99         if (!$envstatus) {
 100             $output .= $this->upgrade_reload(new moodle_url('/admin/index.php', array('agreelicense' => 1, 'lang' => $CFG->lang)));
 101         } else {
 102             $output .= $this->notification(get_string('environmentok', 'admin'), 'notifysuccess');
 103             $output .= $this->continue_button(new moodle_url('/admin/index.php', array('agreelicense'=>1, 'confirmrelease'=>1, 'lang'=>$CFG->lang)));
 104         }
 105
 106         $output .= $this->footer();
 107         return $output;
 108     }
 109
 110     /**
 111      * Display the 'You are about to upgrade Moodle' page. The first page
 112      * during upgrade.
 113      * @param string $strnewversion
 114      * @param int $maturity
 115      * @return string HTML to output.
 116      */
 117     public function upgrade_confirm_page($strnewversion, $maturity) {
 118         $output = '';
 119
 120         $continueurl = new moodle_url('index.php', array('confirmupgrade' => 1));
 121         $cancelurl = new moodle_url('index.php');
 122
 123         $output .= $this->header();
 124         $output .= $this->maturity_warning($maturity);
 125         $output .= $this->confirm(get_string('upgradesure', 'admin', $strnewversion), $continueurl, $cancelurl);
 126         $output .= $this->footer();
 127
 128         return $output;
 129     }
 130
 131     /**
 132      * Display the environment page during the upgrade process.
 133      * @param string $release
 134      * @param boolean $envstatus final result of env check (true/false)
 135      * @param array $environment_results array of results gathered
 136      * @return string HTML to output.
 137      */
 138     public function upgrade_environment_page($release, $envstatus, $environment_results) {
 139         global $CFG;
 140         $output = '';
 141
 142         $output .= $this->header();
 143         $output .= $this->heading("Moodle $release");
 144         $output .= $this->release_notes_link();
 145         $output .= $this->environment_check_table($envstatus, $environment_results);
 146
 147         if (!$envstatus) {
 148             $output .= $this->upgrade_reload(new moodle_url('/admin/index.php'), array('confirmupgrade' => 1));
 149
 150         } else {
 151             $output .= $this->notification(get_string('environmentok', 'admin'), 'notifysuccess');
 152
 153             if (empty($CFG->skiplangupgrade) and current_language() !== 'en') {
 154                 $output .= $this->box(get_string('langpackwillbeupdated', 'admin'), 'generalbox', 'notice');
 155             }
 156
 157             $output .= $this->continue_button(new moodle_url('/admin/index.php', array('confirmupgrade' => 1, 'confirmrelease' => 1)));
 158         }
 159
 160         $output .= $this->footer();
 161
 162         return $output;
 163     }
 164
 165     /**
 166      * Display the upgrade page that lists all the plugins that require attention.
 167      * @param plugin_manager $pluginman provides information about the plugins.
 168      * @param int $version the version of the Moodle code from version.php.
 169      * @param bool $showallplugins
 170      * @param moodle_url $reloadurl
 171      * @param moodle_url $continueurl
 172      * @return string HTML to output.
 173      */
 174     public function upgrade_plugin_check_page(plugin_manager $pluginman, $version, $showallplugins, $reloadurl, $continueurl) {
 175         $output = '';
 176
 177         $output .= $this->header();
 178         $output .= $this->box_start('generalbox');
 179         $output .= $this->container(get_string('pluginchecknotice', 'core_plugin'), 'generalbox', 'notice');
 180         $output .= $this->plugins_check_table($pluginman, $version, array('full' => $showallplugins));
 181         $output .= $this->box_end();
 182         $output .= $this->upgrade_reload($reloadurl);
 183
 184         if ($pluginman->all_plugins_ok($version)) {
 185             $button = new single_button($continueurl, get_string('upgradestart', 'admin'), 'get');
 186             $button->class = 'continuebutton';
 187             $output .= $this->render($button);
 188         } else {
 189             $output .= $this->box(get_string('pluginschecktodo', 'admin'), 'environmentbox errorbox');
 190         }
 191
 192         $output .= $this->footer();
 193
 194         return $output;
 195     }
 196
 197     /**
 198      * Display the admin notifications page.
 199      * @param int $maturity
 200      * @param bool $insecuredataroot warn dataroot is invalid
 201      * @param bool $errorsdisplayed warn invalid dispaly error setting
 202      * @param bool $cronoverdue warn cron not running
 203      * @param bool $dbproblems warn db has problems
 204      * @param bool $maintenancemode warn in maintenance mode
 205      * @return string HTML to output.
 206      */
 207     public function admin_notifications_page($maturity, $insecuredataroot, $errorsdisplayed,
 208             $cronoverdue, $dbproblems, $maintenancemode) {
 209         $output = '';
 210
 211         $output .= $this->header();
 212         $output .= $this->maturity_info($maturity);
 213         $output .= $this->insecure_dataroot_warning($insecuredataroot);
 214         $output .= $this->display_errors_warning($errorsdisplayed);
 215         $output .= $this->cron_overdue_warning($cronoverdue);
 216         $output .= $this->db_problems($dbproblems);
 217         $output .= $this->maintenance_mode_warning($maintenancemode);
 218
 219         //////////////////////////////////////////////////////////////////////////////////////////////////
 220         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 221         $output .= $this->moodle_copyright();
 222         //////////////////////////////////////////////////////////////////////////////////////////////////
 223
 224         $output .= $this->footer();
 225
 226         return $output;
 227     }
 228
 229     /**
 230      * Display the plugin management page (admin/plugins.php).
 231      * @param plugin_manager $pluginman
 232      * @return string HTML to output.
 233      */
 234     public function plugin_management_page(plugin_manager $pluginman) {
 235         $output = '';
 236
 237         $output .= $this->header();
 238         $output .= $this->heading(get_string('pluginsoverview', 'core_admin'));
 239         $output .= $this->box_start('generalbox');
 240         $output .= $this->plugins_control_panel($pluginman);
 241         $output .= $this->box_end();
 242         $output .= $this->footer();
 243
 244         return $output;
 245     }
 246
 247     /**
 248      * Display the plugin management page (admin/environment.php).
 249      * @param array $versions
 250      * @param string $version
 251      * @param boolean $envstatus final result of env check (true/false)
 252      * @param array $environment_results array of results gathered
 253      * @return string HTML to output.
 254      */
 255     public function environment_check_page($versions, $version, $envstatus, $environment_results) {
 256         $output = '';
 257         $output .= $this->header();
 258
 259         // Print the component download link
 260         $output .= html_writer::tag('div', html_writer::link(
 261                     new moodle_url('/admin/environment.php', array('action' => 'updatecomponent', 'sesskey' => sesskey())),
 262                     get_string('updatecomponent', 'admin')),
 263                 array('class' => 'reportlink'));
 264
 265         // Heading.
 266         $output .= $this->heading(get_string('environment', 'admin'));
 267
 268         // Box with info and a menu to choose the version.
 269         $output .= $this->box_start();
 270         $output .= html_writer::tag('div', get_string('adminhelpenvironment'));
 271         $select = new single_select(new moodle_url('/admin/environment.php'), 'version', $versions, $version, null);
 272         $select->label = get_string('moodleversion');
 273         $output .= $this->render($select);
 274         $output .= $this->box_end();
 275
 276         // The results
 277         $output .= $this->environment_check_table($envstatus, $environment_results);
 278
 279         $output .= $this->footer();
 280         return $output;
 281     }
 282
 283     /**
 284      * Output a warning message, of the type that appears on the admin notifications page.
 285      * @param string $message the message to display.
 286      * @param string $type type class
 287      * @return string HTML to output.
 288      */
 289     protected function warning($message, $type = 'warning') {
 290         return $this->box($message, 'generalbox admin' . $type);
 291     }
 292
 293     /**
 294      * Render an appropriate message if dataroot is insecure.
 295      * @param bool $insecuredataroot
 296      * @return string HTML to output.
 297      */
 298     protected function insecure_dataroot_warning($insecuredataroot) {
 299         global $CFG;
 300
 301         if ($insecuredataroot == INSECURE_DATAROOT_WARNING) {
 302             return $this->warning(get_string('datarootsecuritywarning', 'admin', $CFG->dataroot));
 303
 304         } else if ($insecuredataroot == INSECURE_DATAROOT_ERROR) {
 305             return $this->warning(get_string('datarootsecurityerror', 'admin', $CFG->dataroot), 'error');
 306
 307         } else {
 308             return '';
 309         }
 310     }
 311
 312     /**
 313      * Render an appropriate message if dataroot is insecure.
 314      * @param bool $errorsdisplayed
 315      * @return string HTML to output.
 316      */
 317     protected function display_errors_warning($errorsdisplayed) {
 318         if (!$errorsdisplayed) {
 319             return '';
 320         }
 321
 322         return $this->warning(get_string('displayerrorswarning', 'admin'));
 323     }
 324
 325     /**
 326      * Render an appropriate message if cron has not been run recently.
 327      * @param bool $cronoverdue
 328      * @return string HTML to output.
 329      */
 330     public function cron_overdue_warning($cronoverdue) {
 331         if (!$cronoverdue) {
 332             return '';
 333         }
 334
 335         return $this->warning(get_string('cronwarning', 'admin') . '&nbsp;' .
 336                 $this->help_icon('cron', 'admin'));
 337     }
 338
 339     /**
 340      * Render an appropriate message if there are any problems with the DB set-up.
 341      * @param bool $dbproblems
 342      * @return string HTML to output.
 343      */
 344     public function db_problems($dbproblems) {
 345         if (!$dbproblems) {
 346             return '';
 347         }
 348
 349         return $this->warning($dbproblems);
 350     }
 351
 352     /**
 353      * Render an appropriate message if the site in in maintenance mode.
 354      * @param bool $maintenancemode
 355      * @return string HTML to output.
 356      */
 357     public function maintenance_mode_warning($maintenancemode) {
 358         if (!$maintenancemode) {
 359             return '';
 360         }
 361
 362         $url = new moodle_url('/admin/settings.php', array('section' => 'maintenancemode'));
 363         $url = $url->out(); // get_string() does not support objects in params
 364
 365         return $this->warning(get_string('sitemaintenancewarning2', 'admin', $url));
 366     }
 367
 368     /**
 369      * Display a warning about installing development code if necesary.
 370      * @param int $maturity
 371      * @return string HTML to output.
 372      */
 373     protected function maturity_warning($maturity) {
 374         if ($maturity == MATURITY_STABLE) {
 375             return ''; // No worries.
 376         }
 377
 378         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 379         return $this->box(
 380                     $this->container(get_string('maturitycorewarning', 'admin', $maturitylevel)) .
 381                     $this->container($this->doc_link('admin/versions', get_string('morehelp'))),
 382                 'generalbox maturitywarning');
 383     }
 384
 385     /**
 386      * Output the copyright notice.
 387      * @return string HTML to output.
 388      */
 389     protected function moodle_copyright() {
 390         global $CFG;
 391
 392         //////////////////////////////////////////////////////////////////////////////////////////////////
 393         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 394         $copyrighttext = '<a href="http://moodle.org/">Moodle</a> '.
 395                          '<a href="http://docs.moodle.org/dev/Releases" title="'.$CFG->version.'">'.$CFG->release.'</a><br />'.
 396                          'Copyright &copy; 1999 onwards, Martin Dougiamas<br />'.
 397                          'and <a href="http://docs.moodle.org/dev/Credits">many other contributors</a>.<br />'.
 398                          '<a href="http://docs.moodle.org/dev/License">GNU Public License</a>';
 399         //////////////////////////////////////////////////////////////////////////////////////////////////
 400
 401         return $this->box($copyrighttext, 'copyright');
 402     }
 403
 404     /**
 405      * Display a warning about installing development code if necesary.
 406      * @param int $maturity
 407      * @return string HTML to output.
 408      */
 409     protected function maturity_info($maturity) {
 410         if ($maturity == MATURITY_STABLE) {
 411             return ''; // No worries.
 412         }
 413
 414         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 415         return $this->box(
 416                     get_string('maturitycoreinfo', 'admin', $maturitylevel) . ' ' .
 417                     $this->doc_link('admin/versions', get_string('morehelp')),
 418                 'generalbox adminwarning maturityinfo');
 419     }
 420
 421     /**
 422      * Display a link to the release notes.
 423      * @return string HTML to output.
 424      */
 425     protected function release_notes_link() {
 426         $releasenoteslink = get_string('releasenoteslink', 'admin', 'http://docs.moodle.org/dev/Releases');
 427         $releasenoteslink = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $releasenoteslink); // extremely ugly validation hack
 428         return $this->box($releasenoteslink, 'generalbox releasenoteslink');
 429     }
 430
 431     /**
 432      * Display the reload link that appears on several upgrade/install pages.
 433      * @return string HTML to output.
 434      */
 435     function upgrade_reload($url) {
 436         return html_writer::empty_tag('br') .
 437                 html_writer::tag('div',
 438                     html_writer::link($url, $this->pix_icon('i/reload', '') .
 439                             get_string('reload'), array('title' => get_string('reload'))),
 440                 array('class' => 'continuebutton')) . html_writer::empty_tag('br');
 441     }
 442
 443     /**
 444      * Displays all known plugins and information about their installation or upgrade
 445      *
 446      * This default implementation renders all plugins into one big table. The rendering
 447      * options support:
 448      *     (bool)full = false: whether to display up-to-date plugins, too
 449      *
 450      * @param plugin_manager $pluginman provides information about the plugins.
 451      * @param int $version the version of the Moodle code from version.php.
 452      * @param array $options rendering options
 453      * @return string HTML code
 454      */
 455     public function plugins_check_table(plugin_manager $pluginman, $version, array $options = null) {
 456         $plugininfo = $pluginman->get_plugins();
 457
 458         if (empty($plugininfo)) {
 459             return '';
 460         }
 461
 462         if (empty($options)) {
 463             $options = array(
 464                 'full' => false,
 465             );
 466         }
 467
 468         $table = new html_table();
 469         $table->id = 'plugins-check';
 470         $table->head = array(
 471             get_string('displayname', 'core_plugin'),
 472             get_string('rootdir', 'core_plugin'),
 473             get_string('source', 'core_plugin'),
 474             get_string('versiondb', 'core_plugin'),
 475             get_string('versiondisk', 'core_plugin'),
 476             get_string('requires', 'core_plugin'),
 477             get_string('status', 'core_plugin'),
 478         );
 479         $table->colclasses = array(
 480             'displayname', 'rootdir', 'source', 'versiondb', 'versiondisk', 'requires', 'status',
 481         );
 482         $table->data = array();
 483
 484         $numofhighlighted = array();    // number of highlighted rows per this subsection
 485
 486         foreach ($plugininfo as $type => $plugins) {
 487
 488             $header = new html_table_cell($pluginman->plugintype_name_plural($type));
 489             $header->header = true;
 490             $header->colspan = count($table->head);
 491             $header = new html_table_row(array($header));
 492             $header->attributes['class'] = 'plugintypeheader type-' . $type;
 493
 494             $numofhighlighted[$type] = 0;
 495
 496             if (empty($plugins) and $options['full']) {
 497                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
 498                 $msg->colspan = count($table->head);
 499                 $row = new html_table_row(array($msg));
 500                 $row->attributes['class'] .= 'msg msg-noneinstalled';
 501                 $table->data[] = $header;
 502                 $table->data[] = $row;
 503                 continue;
 504             }
 505
 506             $plugintyperows = array();
 507
 508             foreach ($plugins as $name => $plugin) {
 509                 $row = new html_table_row();
 510                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
 511
 512                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name)) {
 513                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'smallicon pluginicon'));
 514                 } else {
 515                     $icon = $this->output->pix_icon('spacer', '', 'moodle', array('class' => 'smallicon pluginicon noicon'));
 516                 }
 517                 $displayname  = $icon . ' ' . $plugin->displayname;
 518                 $displayname = new html_table_cell($displayname);
 519
 520                 $rootdir = new html_table_cell($plugin->get_dir());
 521
 522                 if ($isstandard = $plugin->is_standard()) {
 523                     $row->attributes['class'] .= ' standard';
 524                     $source = new html_table_cell(get_string('sourcestd', 'core_plugin'));
 525                 } else {
 526                     $row->attributes['class'] .= ' extension';
 527                     $source = new html_table_cell(get_string('sourceext', 'core_plugin'));
 528                 }
 529
 530                 $versiondb = new html_table_cell($plugin->versiondb);
 531                 $versiondisk = new html_table_cell($plugin->versiondisk);
 532
 533                 $statuscode = $plugin->get_status();
 534                 $row->attributes['class'] .= ' status-' . $statuscode;
 535
 536                 $status = new html_table_cell(get_string('status_' . $statuscode, 'core_plugin'));
 537
 538                 $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version));
 539
 540                 $statusisboring = in_array($statuscode, array(
 541                         plugin_manager::PLUGIN_STATUS_NODB, plugin_manager::PLUGIN_STATUS_UPTODATE));
 542                 $dependenciesok = $pluginman->are_dependencies_satisfied(
 543                         $plugin->get_other_required_plugins());
 544                 if ($isstandard and $statusisboring and $dependenciesok) {
 545                     if (empty($options['full'])) {
 546                         continue;
 547                     }
 548                 } else {
 549                     $numofhighlighted[$type]++;
 550                 }
 551
 552                 $row->cells = array($displayname, $rootdir, $source,
 553                     $versiondb, $versiondisk, $requires, $status);
 554                 $plugintyperows[] = $row;
 555             }
 556
 557             if (empty($numofhighlighted[$type]) and empty($options['full'])) {
 558                 continue;
 559             }
 560
 561             $table->data[] = $header;
 562             $table->data = array_merge($table->data, $plugintyperows);
 563         }
 564
 565         $sumofhighlighted = array_sum($numofhighlighted);
 566
 567         if ($sumofhighlighted == 0) {
 568             $out  = $this->output->container_start('nonehighlighted', 'plugins-check-info');
 569             $out .= $this->output->heading(get_string('nonehighlighted', 'core_plugin'));
 570             if (empty($options['full'])) {
 571                 $out .= html_writer::link(new moodle_url('/admin/index.php',
 572                     array('confirmupgrade' => 1, 'confirmrelease' => 1, 'showallplugins' => 1)),
 573                     get_string('nonehighlightedinfo', 'core_plugin'));
 574             }
 575             $out .= $this->output->container_end();
 576
 577         } else {
 578             $out  = $this->output->container_start('somehighlighted', 'plugins-check-info');
 579             $out .= $this->output->heading(get_string('somehighlighted', 'core_plugin', $sumofhighlighted));
 580             if (empty($options['full'])) {
 581                 $out .= html_writer::link(new moodle_url('/admin/index.php',
 582                     array('confirmupgrade' => 1, 'confirmrelease' => 1, 'showallplugins' => 1)),
 583                     get_string('somehighlightedinfo', 'core_plugin'));
 584             }
 585             $out .= $this->output->container_end();
 586         }
 587
 588         if ($sumofhighlighted > 0 or $options['full']) {
 589             $out .= html_writer::table($table);
 590         }
 591
 592         return $out;
 593     }
 594
 595     /**
 596      * Formats the information that needs to go in the 'Requires' column.
 597      * @param plugin_information $plugin the plugin we are rendering the row for.
 598      * @param plugin_manager $pluginman provides data on all the plugins.
 599      * @param string $version
 600      * @return string HTML code
 601      */
 602     protected function required_column(plugin_information $plugin, plugin_manager $pluginman, $version) {
 603         $requires = array();
 604
 605         if (!empty($plugin->versionrequires)) {
 606             if ($plugin->versionrequires <= $version) {
 607                 $class = 'requires-ok';
 608             } else {
 609                 $class = 'requires-failed';
 610             }
 611             $requires[] = html_writer::tag('li',
 612                 get_string('moodleversion', 'core_plugin', $plugin->versionrequires),
 613                 array('class' => $class));
 614         }
 615
 616         foreach ($plugin->get_other_required_plugins() as $component => $requiredversion) {
 617             $ok = true;
 618             $otherplugin = $pluginman->get_plugin_info($component);
 619
 620             if (is_null($otherplugin)) {
 621                 $ok = false;
 622             } else if ($requiredversion != ANY_VERSION and $otherplugin->versiondisk < $requiredversion) {
 623                 $ok = false;
 624             }
 625
 626             if ($ok) {
 627                 $class = 'requires-ok';
 628             } else {
 629                 $class = 'requires-failed';
 630             }
 631
 632             if ($requiredversion != ANY_VERSION) {
 633                 $str = 'otherpluginversion';
 634             } else {
 635                 $str = 'otherplugin';
 636             }
 637             $requires[] = html_writer::tag('li',
 638                     get_string($str, 'core_plugin',
 639                             array('component' => $component, 'version' => $requiredversion)),
 640                     array('class' => $class));
 641         }
 642
 643         if (!$requires) {
 644             return '';
 645         }
 646         return html_writer::tag('ul', implode("\n", $requires));
 647     }
 648
 649     /**
 650      * Displays all known plugins and links to manage them
 651      *
 652      * This default implementation renders all plugins into one big table.
 653      *
 654      * @param plugin_manager $pluginman provides information about the plugins.
 655      * @return string HTML code
 656      */
 657     public function plugins_control_panel(plugin_manager $pluginman) {
 658         $plugininfo = $pluginman->get_plugins();
 659
 660         if (empty($plugininfo)) {
 661             return '';
 662         }
 663
 664         $table = new html_table();
 665         $table->id = 'plugins-control-panel';
 666         $table->head = array(
 667             get_string('displayname', 'core_plugin'),
 668             get_string('systemname', 'core_plugin'),
 669             get_string('source', 'core_plugin'),
 670             get_string('version', 'core_plugin'),
 671             get_string('availability', 'core_plugin'),
 672             get_string('settings', 'core_plugin'),
 673             get_string('uninstall','core_plugin'),
 674         );
 675         $table->colclasses = array(
 676             'displayname', 'systemname', 'source', 'version', 'availability', 'settings', 'uninstall',
 677         );
 678
 679         foreach ($plugininfo as $type => $plugins) {
 680
 681             $header = new html_table_cell($pluginman->plugintype_name_plural($type));
 682             $header->header = true;
 683             $header->colspan = count($table->head);
 684             $header = new html_table_row(array($header));
 685             $header->attributes['class'] = 'plugintypeheader type-' . $type;
 686             $table->data[] = $header;
 687
 688             if (empty($plugins)) {
 689                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
 690                 $msg->colspan = count($table->head);
 691                 $row = new html_table_row(array($msg));
 692                 $row->attributes['class'] .= 'msg msg-noneinstalled';
 693                 $table->data[] = $row;
 694                 continue;
 695             }
 696
 697             foreach ($plugins as $name => $plugin) {
 698                 $row = new html_table_row();
 699                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
 700
 701                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name)) {
 702                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'smallicon pluginicon'));
 703                 } else {
 704                     $icon = $this->output->pix_icon('spacer', '', 'moodle', array('class' => 'smallicon pluginicon noicon'));
 705                 }
 706                 if ($plugin->get_status() === plugin_manager::PLUGIN_STATUS_MISSING) {
 707                     $msg = html_writer::tag('span', get_string('status_missing', 'core_plugin'), array('class' => 'notifyproblem'));
 708                     $row->attributes['class'] .= ' missingfromdisk';
 709                 } else {
 710                     $msg = '';
 711                 }
 712                 $displayname  = $icon . ' ' . $plugin->displayname . ' ' . $msg;
 713                 $displayname = new html_table_cell($displayname);
 714
 715                 $systemname = new html_table_cell($plugin->type . '_' . $plugin->name);
 716
 717                 if ($plugin->is_standard()) {
 718                     $row->attributes['class'] .= ' standard';
 719                     $source = new html_table_cell(get_string('sourcestd', 'core_plugin'));
 720                 } else {
 721                     $row->attributes['class'] .= ' extension';
 722                     $source = new html_table_cell(get_string('sourceext', 'core_plugin'));
 723                 }
 724
 725                 $version = new html_table_cell($plugin->versiondb);
 726
 727                 $isenabled = $plugin->is_enabled();
 728                 if (is_null($isenabled)) {
 729                     $availability = new html_table_cell('');
 730                 } else if ($isenabled) {
 731                     $row->attributes['class'] .= ' enabled';
 732                     $icon = $this->output->pix_icon('i/hide', get_string('pluginenabled', 'core_plugin'));
 733                     $availability = new html_table_cell($icon . ' ' . get_string('pluginenabled', 'core_plugin'));
 734                 } else {
 735                     $row->attributes['class'] .= ' disabled';
 736                     $icon = $this->output->pix_icon('i/show', get_string('plugindisabled', 'core_plugin'));
 737                     $availability = new html_table_cell($icon . ' ' . get_string('plugindisabled', 'core_plugin'));
 738                 }
 739
 740                 $settingsurl = $plugin->get_settings_url();
 741                 if (is_null($settingsurl)) {
 742                     $settings = new html_table_cell('');
 743                 } else {
 744                     $settings = html_writer::link($settingsurl, get_string('settings', 'core_plugin'));
 745                     $settings = new html_table_cell($settings);
 746                 }
 747
 748                 $uninstallurl = $plugin->get_uninstall_url();
 749                 $requriedby = $pluginman->other_plugins_that_require($plugin->component);
 750                 if (is_null($uninstallurl)) {
 751                     $uninstall = new html_table_cell('');
 752                 } else if ($requriedby) {
 753                     $uninstall = new html_table_cell(get_string('requiredby', 'core_plugin', implode(', ', $requriedby)));
 754                     $uninstall->attributes['class'] = 'requiredby';
 755                 } else {
 756                     $uninstall = html_writer::link($uninstallurl, get_string('uninstall', 'core_plugin'));
 757                     $uninstall = new html_table_cell($uninstall);
 758                 }
 759
 760                 $row->cells = array(
 761                     $displayname, $systemname, $source, $version, $availability, $settings, $uninstall
 762                 );
 763                 $table->data[] = $row;
 764             }
 765         }
 766
 767         return html_writer::table($table);
 768     }
 769
 770     /**
 771      * This function will render one beautiful table with all the environmental
 772      * configuration and how it suits Moodle needs.
 773      *
 774      * @param boolean $result final result of the check (true/false)
 775      * @param array $environment_results array of results gathered
 776      * @return string HTML to output.
 777      */
 778     public function environment_check_table($result, $environment_results) {
 779         global $CFG;
 780
 781         // Table headers
 782         $servertable = new html_table();//table for server checks
 783         $servertable->head  = array(
 784             get_string('name'),
 785             get_string('info'),
 786             get_string('report'),
 787             get_string('status'),
 788         );
 789         $servertable->align = array('center', 'center', 'left', 'center');
 790         $servertable->wrap  = array('nowrap', '', '', 'nowrap');
 791         $servertable->size  = array('10', 10, '100%', '10');
 792         $servertable->attributes['class'] = 'environmenttable generaltable';
 793
 794         $serverdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
 795
 796         $othertable = new html_table();//table for custom checks
 797         $othertable->head  = array(
 798             get_string('info'),
 799             get_string('report'),
 800             get_string('status'),
 801         );
 802         $othertable->align = array('center', 'left', 'center');
 803         $othertable->wrap  = array('', '', 'nowrap');
 804         $othertable->size  = array(10, '100%', '10');
 805         $othertable->attributes['class'] = 'environmenttable generaltable';
 806
 807         $otherdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
 808
 809         // Iterate over each environment_result
 810         $continue = true;
 811         foreach ($environment_results as $environment_result) {
 812             $errorline   = false;
 813             $warningline = false;
 814             $stringtouse = '';
 815             if ($continue) {
 816                 $type = $environment_result->getPart();
 817                 $info = $environment_result->getInfo();
 818                 $status = $environment_result->getStatus();
 819                 $error_code = $environment_result->getErrorCode();
 820                 // Process Report field
 821                 $rec = new stdClass();
 822                 // Something has gone wrong at parsing time
 823                 if ($error_code) {
 824                     $stringtouse = 'environmentxmlerror';
 825                     $rec->error_code = $error_code;
 826                     $status = get_string('error');
 827                     $errorline = true;
 828                     $continue = false;
 829                 }
 830
 831                 if ($continue) {
 832                     if ($rec->needed = $environment_result->getNeededVersion()) {
 833                         // We are comparing versions
 834                         $rec->current = $environment_result->getCurrentVersion();
 835                         if ($environment_result->getLevel() == 'required') {
 836                             $stringtouse = 'environmentrequireversion';
 837                         } else {
 838                             $stringtouse = 'environmentrecommendversion';
 839                         }
 840
 841                     } else if ($environment_result->getPart() == 'custom_check') {
 842                         // We are checking installed & enabled things
 843                         if ($environment_result->getLevel() == 'required') {
 844                             $stringtouse = 'environmentrequirecustomcheck';
 845                         } else {
 846                             $stringtouse = 'environmentrecommendcustomcheck';
 847                         }
 848
 849                     } else if ($environment_result->getPart() == 'php_setting') {
 850                         if ($status) {
 851                             $stringtouse = 'environmentsettingok';
 852                         } else if ($environment_result->getLevel() == 'required') {
 853                             $stringtouse = 'environmentmustfixsetting';
 854                         } else {
 855                             $stringtouse = 'environmentshouldfixsetting';
 856                         }
 857
 858                     } else {
 859                         if ($environment_result->getLevel() == 'required') {
 860                             $stringtouse = 'environmentrequireinstall';
 861                         } else {
 862                             $stringtouse = 'environmentrecommendinstall';
 863                         }
 864                     }
 865
 866                     // Calculate the status value
 867                     if ($environment_result->getBypassStr() != '') {            //Handle bypassed result (warning)
 868                         $status = get_string('bypassed');
 869                         $warningline = true;
 870                     } else if ($environment_result->getRestrictStr() != '') {   //Handle restricted result (error)
 871                         $status = get_string('restricted');
 872                         $errorline = true;
 873                     } else {
 874                         if ($status) {                                          //Handle ok result (ok)
 875                             $status = get_string('ok');
 876                         } else {
 877                             if ($environment_result->getLevel() == 'optional') {//Handle check result (warning)
 878                                 $status = get_string('check');
 879                                 $warningline = true;
 880                             } else {                                            //Handle error result (error)
 881                                 $status = get_string('check');
 882                                 $errorline = true;
 883                             }
 884                         }
 885                     }
 886                 }
 887
 888                 // Build the text
 889                 $linkparts = array();
 890                 $linkparts[] = 'admin/environment';
 891                 $linkparts[] = $type;
 892                 if (!empty($info)){
 893                    $linkparts[] = $info;
 894                 }
 895                 if (empty($CFG->docroot)) {
 896                     $report = get_string($stringtouse, 'admin', $rec);
 897                 } else {
 898                     $report = $this->doc_link(join($linkparts, '/'), get_string($stringtouse, 'admin', $rec));
 899                 }
 900
 901                 // Format error or warning line
 902                 if ($errorline || $warningline) {
 903                     $messagetype = $errorline? 'error':'warn';
 904                 } else {
 905                     $messagetype = 'ok';
 906                 }
 907                 $status = '<span class="'.$messagetype.'">'.$status.'</span>';
 908                 // Here we'll store all the feedback found
 909                 $feedbacktext = '';
 910                 // Append the feedback if there is some
 911                 $feedbacktext .= $environment_result->strToReport($environment_result->getFeedbackStr(), $messagetype);
 912                 //Append the bypass if there is some
 913                 $feedbacktext .= $environment_result->strToReport($environment_result->getBypassStr(), 'warn');
 914                 //Append the restrict if there is some
 915                 $feedbacktext .= $environment_result->strToReport($environment_result->getRestrictStr(), 'error');
 916
 917                 $report .= $feedbacktext;
 918
 919                 // Add the row to the table
 920                 if ($environment_result->getPart() == 'custom_check'){
 921                     $otherdata[$messagetype][] = array ($info, $report, $status);
 922                 } else {
 923                     $serverdata[$messagetype][] = array ($type, $info, $report, $status);
 924                 }
 925             }
 926         }
 927
 928         //put errors first in
 929         $servertable->data = array_merge($serverdata['error'], $serverdata['warn'], $serverdata['ok']);
 930         $othertable->data = array_merge($otherdata['error'], $otherdata['warn'], $otherdata['ok']);
 931
 932         // Print table
 933         $output = '';
 934         $output .= $this->heading(get_string('serverchecks', 'admin'));
 935         $output .= html_writer::table($servertable);
 936         if (count($othertable->data)){
 937             $output .= $this->heading(get_string('customcheck', 'admin'));
 938             $output .= html_writer::table($othertable);
 939         }
 940
 941         // Finally, if any error has happened, print the summary box
 942         if (!$result) {
 943             $output .= $this->box(get_string('environmenterrortodo', 'admin'), 'environmentbox errorbox');
 944         }
 945
 946         return $output;
 947     }
 948 }