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