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
  29 /**
  30  * Standard HTML output renderer for core_admin subsystem
  31  */
  32 class core_admin_renderer extends plugin_renderer_base {
  33
  34     /**
  35      * Display the 'Do you acknowledge the terms of the GPL' page. The first page
  36      * during install.
  37      * @return string HTML to output.
  38      */
  39     public function install_licence_page() {
  40         global $CFG;
  41         $output = '';
  42
  43         $copyrightnotice = text_to_html(get_string('gpl3'));
  44         $copyrightnotice = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $copyrightnotice); // extremely ugly validation hack
  45
  46         $continue = new single_button(new moodle_url($this->page->url, array(
  47             '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 .= format_text(get_string('upgradestalefilesinfo', 'admin', get_docs_url('Upgrading')), FORMAT_MARKDOWN);
  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 .= $this->upgrade_reload(new moodle_url($this->page->url, array('agreelicense' => 1, 'lang' => $CFG->lang)));
 101         } else {
 102             $output .= $this->notification(get_string('environmentok', 'admin'), 'notifysuccess');
 103             $output .= $this->continue_button(new moodle_url($this->page->url, array(
 104                 'agreelicense' => 1, 'confirmrelease' => 1, 'lang' => $CFG->lang)));
 105         }
 106
 107         $output .= $this->footer();
 108         return $output;
 109     }
 110
 111     /**
 112      * Displays the list of plugins with unsatisfied dependencies
 113      *
 114      * @param double|string|int $version Moodle on-disk version
 115      * @param array $failed list of plugins with unsatisfied dependecies
 116      * @param moodle_url $reloadurl URL of the page to recheck the dependencies
 117      * @return string HTML
 118      */
 119     public function unsatisfied_dependencies_page($version, array $failed, moodle_url $reloadurl) {
 120         $output = '';
 121
 122         $output .= $this->header();
 123         $output .= $this->heading(get_string('pluginscheck', 'admin'));
 124         $output .= $this->warning(get_string('pluginscheckfailed', 'admin', array('pluginslist' => implode(', ', array_unique($failed)))));
 125         $output .= $this->plugins_check_table(core_plugin_manager::instance(), $version, array('xdep' => true));
 126         $output .= $this->warning(get_string('pluginschecktodo', 'admin'));
 127         $output .= $this->continue_button($reloadurl);
 128
 129         $output .= $this->footer();
 130
 131         return $output;
 132     }
 133
 134     /**
 135      * Display the 'You are about to upgrade Moodle' page. The first page
 136      * during upgrade.
 137      * @param string $strnewversion
 138      * @param int $maturity
 139      * @param string $testsite
 140      * @return string HTML to output.
 141      */
 142     public function upgrade_confirm_page($strnewversion, $maturity, $testsite) {
 143         $output = '';
 144
 145         $continueurl = new moodle_url($this->page->url, array('confirmupgrade' => 1, 'cache' => 0));
 146         $continue = new single_button($continueurl, get_string('continue'), 'get');
 147         $cancelurl = new moodle_url('/admin/index.php');
 148
 149         $output .= $this->header();
 150         $output .= $this->maturity_warning($maturity);
 151         $output .= $this->test_site_warning($testsite);
 152         $output .= $this->confirm(get_string('upgradesure', 'admin', $strnewversion), $continue, $cancelurl);
 153         $output .= $this->footer();
 154
 155         return $output;
 156     }
 157
 158     /**
 159      * Display the environment page during the upgrade process.
 160      * @param string $release
 161      * @param boolean $envstatus final result of env check (true/false)
 162      * @param array $environment_results array of results gathered
 163      * @return string HTML to output.
 164      */
 165     public function upgrade_environment_page($release, $envstatus, $environment_results) {
 166         global $CFG;
 167         $output = '';
 168
 169         $output .= $this->header();
 170         $output .= $this->heading("Moodle $release");
 171         $output .= $this->release_notes_link();
 172         $output .= $this->environment_check_table($envstatus, $environment_results);
 173
 174         if (!$envstatus) {
 175             $output .= $this->upgrade_reload(new moodle_url($this->page->url, array('confirmupgrade' => 1, 'cache' => 0)));
 176
 177         } else {
 178             $output .= $this->notification(get_string('environmentok', 'admin'), 'notifysuccess');
 179
 180             if (empty($CFG->skiplangupgrade) and current_language() !== 'en') {
 181                 $output .= $this->box(get_string('langpackwillbeupdated', 'admin'), 'generalbox', 'notice');
 182             }
 183
 184             $output .= $this->continue_button(new moodle_url($this->page->url, array(
 185                 'confirmupgrade' => 1, 'confirmrelease' => 1, 'cache' => 0)));
 186         }
 187
 188         $output .= $this->footer();
 189
 190         return $output;
 191     }
 192
 193     /**
 194      * Display the upgrade page that lists all the plugins that require attention.
 195      * @param core_plugin_manager $pluginman provides information about the plugins.
 196      * @param \core\update\checker $checker provides information about available updates.
 197      * @param int $version the version of the Moodle code from version.php.
 198      * @param bool $showallplugins
 199      * @param moodle_url $reloadurl
 200      * @param moodle_url $continueurl
 201      * @return string HTML to output.
 202      */
 203     public function upgrade_plugin_check_page(core_plugin_manager $pluginman, \core\update\checker $checker,
 204             $version, $showallplugins, $reloadurl, $continueurl) {
 205
 206         $output = '';
 207
 208         $output .= $this->header();
 209         $output .= $this->box_start('generalbox', 'plugins-check-page');
 210         $output .= html_writer::tag('p', get_string('pluginchecknotice', 'core_plugin'), array('class' => 'page-description'));
 211         $output .= $this->check_for_updates_button($checker, $reloadurl);
 212         $output .= $this->missing_dependencies($pluginman);
 213         $output .= $this->plugins_check_table($pluginman, $version, array('full' => $showallplugins));
 214         $output .= $this->box_end();
 215         $output .= $this->upgrade_reload($reloadurl);
 216
 217         if ($pluginman->some_plugins_updatable()) {
 218             $output .= $this->container_start('upgradepluginsinfo');
 219             $output .= $this->help_icon('upgradepluginsinfo', 'core_admin', get_string('upgradepluginsfirst', 'core_admin'));
 220             $output .= $this->container_end();
 221         }
 222
 223         $button = new single_button($continueurl, get_string('upgradestart', 'admin'), 'get');
 224         $button->class = 'continuebutton';
 225         $output .= $this->render($button);
 226         $output .= $this->footer();
 227
 228         return $output;
 229     }
 230
 231     /**
 232      * Display a page to confirm plugin installation cancelation.
 233      *
 234      * @param array $abortable list of \core\update\plugininfo
 235      * @param moodle_url $continue
 236      * @return string
 237      */
 238     public function upgrade_confirm_abort_install_page(array $abortable, moodle_url $continue) {
 239
 240         $pluginman = core_plugin_manager::instance();
 241
 242         if (empty($abortable)) {
 243             // The UI should not allow this.
 244             throw new moodle_exception('err_no_plugin_install_abortable', 'core_plugin');
 245         }
 246
 247         $out = $this->output->header();
 248         $out .= $this->output->heading(get_string('cancelinstallhead', 'core_plugin'), 3);
 249         $out .= $this->output->container(get_string('cancelinstallinfo', 'core_plugin'), 'cancelinstallinfo');
 250
 251         foreach ($abortable as $pluginfo) {
 252             $out .= $this->output->heading($pluginfo->displayname.' ('.$pluginfo->component.')', 4);
 253             $out .= $this->output->container(get_string('cancelinstallinfodir', 'core_plugin', $pluginfo->rootdir));
 254             if ($repotype = $pluginman->plugin_external_source($pluginfo->component)) {
 255                 $out .= $this->output->container(get_string('uninstalldeleteconfirmexternal', 'core_plugin', $repotype),
 256                     'uninstalldeleteconfirmexternal');
 257             }
 258         }
 259
 260         $out .= $this->plugins_management_confirm_buttons($continue, $this->page->url);
 261         $out .= $this->output->footer();
 262
 263         return $out;
 264     }
 265
 266     /**
 267      * Display the admin notifications page.
 268      * @param int $maturity
 269      * @param bool $insecuredataroot warn dataroot is invalid
 270      * @param bool $errorsdisplayed warn invalid dispaly error setting
 271      * @param bool $cronoverdue warn cron not running
 272      * @param bool $dbproblems warn db has problems
 273      * @param bool $maintenancemode warn in maintenance mode
 274      * @param bool $buggyiconvnomb warn iconv problems
 275      * @param array|null $availableupdates array of \core\update\info objects or null
 276      * @param int|null $availableupdatesfetch timestamp of the most recent updates fetch or null (unknown)
 277      * @param string[] $cachewarnings An array containing warnings from the Cache API.
 278      *
 279      * @return string HTML to output.
 280      */
 281     public function admin_notifications_page($maturity, $insecuredataroot, $errorsdisplayed,
 282             $cronoverdue, $dbproblems, $maintenancemode, $availableupdates, $availableupdatesfetch,
 283             $buggyiconvnomb, $registered, array $cachewarnings = array()) {
 284         global $CFG;
 285         $output = '';
 286
 287         $output .= $this->header();
 288         $output .= $this->maturity_info($maturity);
 289         $output .= empty($CFG->disableupdatenotifications) ? $this->available_updates($availableupdates, $availableupdatesfetch) : '';
 290         $output .= $this->insecure_dataroot_warning($insecuredataroot);
 291         $output .= $this->display_errors_warning($errorsdisplayed);
 292         $output .= $this->buggy_iconv_warning($buggyiconvnomb);
 293         $output .= $this->cron_overdue_warning($cronoverdue);
 294         $output .= $this->db_problems($dbproblems);
 295         $output .= $this->maintenance_mode_warning($maintenancemode);
 296         $output .= $this->cache_warnings($cachewarnings);
 297         $output .= $this->registration_warning($registered);
 298
 299         //////////////////////////////////////////////////////////////////////////////////////////////////
 300         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 301         $output .= $this->moodle_copyright();
 302         //////////////////////////////////////////////////////////////////////////////////////////////////
 303
 304         $output .= $this->footer();
 305
 306         return $output;
 307     }
 308
 309     /**
 310      * Display the plugin management page (admin/plugins.php).
 311      *
 312      * The filtering options array may contain following items:
 313      *  bool contribonly - show only contributed extensions
 314      *  bool updatesonly - show only plugins with an available update
 315      *
 316      * @param core_plugin_manager $pluginman
 317      * @param \core\update\checker $checker
 318      * @param array $options filtering options
 319      * @return string HTML to output.
 320      */
 321     public function plugin_management_page(core_plugin_manager $pluginman, \core\update\checker $checker, array $options = array()) {
 322
 323         $output = '';
 324
 325         $output .= $this->header();
 326         $output .= $this->heading(get_string('pluginsoverview', 'core_admin'));
 327         $output .= $this->check_for_updates_button($checker, $this->page->url);
 328         $output .= $this->plugins_overview_panel($pluginman, $options);
 329         $output .= $this->plugins_control_panel($pluginman, $options);
 330         $output .= $this->footer();
 331
 332         return $output;
 333     }
 334
 335     /**
 336      * Renders a button to fetch for available updates.
 337      *
 338      * @param \core\update\checker $checker
 339      * @param moodle_url $reloadurl
 340      * @return string HTML
 341      */
 342     public function check_for_updates_button(\core\update\checker $checker, $reloadurl) {
 343
 344         $output = '';
 345
 346         if ($checker->enabled()) {
 347             $output .= $this->container_start('checkforupdates');
 348             $output .= $this->single_button(
 349                 new moodle_url($reloadurl, array('fetchupdates' => 1)),
 350                 get_string('checkforupdates', 'core_plugin')
 351             );
 352             if ($timefetched = $checker->get_last_timefetched()) {
 353                 $timefetched = userdate($timefetched, get_string('strftimedatetime', 'core_langconfig'));
 354                 $output .= $this->container(get_string('checkforupdateslast', 'core_plugin', $timefetched), 'lasttimefetched');
 355             }
 356             $output .= $this->container_end();
 357         }
 358
 359         return $output;
 360     }
 361
 362     /**
 363      * Display a page to confirm the plugin uninstallation.
 364      *
 365      * @param core_plugin_manager $pluginman
 366      * @param \core\plugininfo\base $pluginfo
 367      * @param moodle_url $continueurl URL to continue after confirmation
 368      * @param moodle_url $cancelurl URL to to go if cancelled
 369      * @return string
 370      */
 371     public function plugin_uninstall_confirm_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo, moodle_url $continueurl, moodle_url $cancelurl) {
 372         $output = '';
 373
 374         $pluginname = $pluginman->plugin_name($pluginfo->component);
 375
 376         $confirm = '<p>' . get_string('uninstallconfirm', 'core_plugin', array('name' => $pluginname)) . '</p>';
 377         if ($extraconfirm = $pluginfo->get_uninstall_extra_warning()) {
 378             $confirm .= $extraconfirm;
 379         }
 380
 381         $output .= $this->output->header();
 382         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 383         $output .= $this->output->confirm($confirm, $continueurl, $cancelurl);
 384         $output .= $this->output->footer();
 385
 386         return $output;
 387     }
 388
 389     /**
 390      * Display a page with results of plugin uninstallation and offer removal of plugin files.
 391      *
 392      * @param core_plugin_manager $pluginman
 393      * @param \core\plugininfo\base $pluginfo
 394      * @param progress_trace_buffer $progress
 395      * @param moodle_url $continueurl URL to continue to remove the plugin folder
 396      * @return string
 397      */
 398     public function plugin_uninstall_results_removable_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo,
 399                                                             progress_trace_buffer $progress, moodle_url $continueurl) {
 400         $output = '';
 401
 402         $pluginname = $pluginman->plugin_name($pluginfo->component);
 403
 404         // Do not show navigation here, they must click one of the buttons.
 405         $this->page->set_pagelayout('maintenance');
 406         $this->page->set_cacheable(false);
 407
 408         $output .= $this->output->header();
 409         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 410
 411         $output .= $this->output->box($progress->get_buffer(), 'generalbox uninstallresultmessage');
 412
 413         $confirm = $this->output->container(get_string('uninstalldeleteconfirm', 'core_plugin',
 414             array('name' => $pluginname, 'rootdir' => $pluginfo->rootdir)), 'uninstalldeleteconfirm');
 415
 416         if ($repotype = $pluginman->plugin_external_source($pluginfo->component)) {
 417             $confirm .= $this->output->container(get_string('uninstalldeleteconfirmexternal', 'core_plugin', $repotype),
 418                 'uninstalldeleteconfirmexternal');
 419         }
 420
 421         // After any uninstall we must execute full upgrade to finish the cleanup!
 422         $output .= $this->output->confirm($confirm, $continueurl, new moodle_url('/admin/index.php'));
 423         $output .= $this->output->footer();
 424
 425         return $output;
 426     }
 427
 428     /**
 429      * Display a page with results of plugin uninstallation and inform about the need to remove plugin files manually.
 430      *
 431      * @param core_plugin_manager $pluginman
 432      * @param \core\plugininfo\base $pluginfo
 433      * @param progress_trace_buffer $progress
 434      * @return string
 435      */
 436     public function plugin_uninstall_results_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo, progress_trace_buffer $progress) {
 437         $output = '';
 438
 439         $pluginname = $pluginfo->component;
 440
 441         $output .= $this->output->header();
 442         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 443
 444         $output .= $this->output->box($progress->get_buffer(), 'generalbox uninstallresultmessage');
 445
 446         $output .= $this->output->box(get_string('uninstalldelete', 'core_plugin',
 447             array('name' => $pluginname, 'rootdir' => $pluginfo->rootdir)), 'generalbox uninstalldelete');
 448         $output .= $this->output->continue_button(new moodle_url('/admin/index.php'));
 449         $output .= $this->output->footer();
 450
 451         return $output;
 452     }
 453
 454     /**
 455      * Display the plugin management page (admin/environment.php).
 456      * @param array $versions
 457      * @param string $version
 458      * @param boolean $envstatus final result of env check (true/false)
 459      * @param array $environment_results array of results gathered
 460      * @return string HTML to output.
 461      */
 462     public function environment_check_page($versions, $version, $envstatus, $environment_results) {
 463         $output = '';
 464         $output .= $this->header();
 465
 466         // Print the component download link
 467         $output .= html_writer::tag('div', html_writer::link(
 468                     new moodle_url('/admin/environment.php', array('action' => 'updatecomponent', 'sesskey' => sesskey())),
 469                     get_string('updatecomponent', 'admin')),
 470                 array('class' => 'reportlink'));
 471
 472         // Heading.
 473         $output .= $this->heading(get_string('environment', 'admin'));
 474
 475         // Box with info and a menu to choose the version.
 476         $output .= $this->box_start();
 477         $output .= html_writer::tag('div', get_string('adminhelpenvironment'));
 478         $select = new single_select(new moodle_url('/admin/environment.php'), 'version', $versions, $version, null);
 479         $select->label = get_string('moodleversion');
 480         $output .= $this->render($select);
 481         $output .= $this->box_end();
 482
 483         // The results
 484         $output .= $this->environment_check_table($envstatus, $environment_results);
 485
 486         $output .= $this->footer();
 487         return $output;
 488     }
 489
 490     /**
 491      * Output a warning message, of the type that appears on the admin notifications page.
 492      * @param string $message the message to display.
 493      * @param string $type type class
 494      * @return string HTML to output.
 495      */
 496     protected function warning($message, $type = 'warning') {
 497         return $this->box($message, 'generalbox admin' . $type);
 498     }
 499
 500     /**
 501      * Render an appropriate message if dataroot is insecure.
 502      * @param bool $insecuredataroot
 503      * @return string HTML to output.
 504      */
 505     protected function insecure_dataroot_warning($insecuredataroot) {
 506         global $CFG;
 507
 508         if ($insecuredataroot == INSECURE_DATAROOT_WARNING) {
 509             return $this->warning(get_string('datarootsecuritywarning', 'admin', $CFG->dataroot));
 510
 511         } else if ($insecuredataroot == INSECURE_DATAROOT_ERROR) {
 512             return $this->warning(get_string('datarootsecurityerror', 'admin', $CFG->dataroot), 'error');
 513
 514         } else {
 515             return '';
 516         }
 517     }
 518
 519     /**
 520      * Render an appropriate message if dataroot is insecure.
 521      * @param bool $errorsdisplayed
 522      * @return string HTML to output.
 523      */
 524     protected function display_errors_warning($errorsdisplayed) {
 525         if (!$errorsdisplayed) {
 526             return '';
 527         }
 528
 529         return $this->warning(get_string('displayerrorswarning', 'admin'));
 530     }
 531
 532     /**
 533      * Render an appropriate message if iconv is buggy and mbstring missing.
 534      * @param bool $buggyiconvnomb
 535      * @return string HTML to output.
 536      */
 537     protected function buggy_iconv_warning($buggyiconvnomb) {
 538         if (!$buggyiconvnomb) {
 539             return '';
 540         }
 541
 542         return $this->warning(get_string('warningiconvbuggy', 'admin'));
 543     }
 544
 545     /**
 546      * Render an appropriate message if cron has not been run recently.
 547      * @param bool $cronoverdue
 548      * @return string HTML to output.
 549      */
 550     public function cron_overdue_warning($cronoverdue) {
 551         global $CFG;
 552         if (!$cronoverdue) {
 553             return '';
 554         }
 555
 556         if (empty($CFG->cronclionly)) {
 557             $url = new moodle_url('/admin/cron.php');
 558             if (!empty($CFG->cronremotepassword)) {
 559                 $url = new moodle_url('/admin/cron.php', array('password' => $CFG->cronremotepassword));
 560             }
 561
 562             return $this->warning(get_string('cronwarning', 'admin', $url->out()) . '&nbsp;' .
 563                     $this->help_icon('cron', 'admin'));
 564         }
 565
 566         // $CFG->cronclionly is not empty: cron can run only from CLI.
 567         return $this->warning(get_string('cronwarningcli', 'admin') . '&nbsp;' .
 568                 $this->help_icon('cron', 'admin'));
 569     }
 570
 571     /**
 572      * Render an appropriate message if there are any problems with the DB set-up.
 573      * @param bool $dbproblems
 574      * @return string HTML to output.
 575      */
 576     public function db_problems($dbproblems) {
 577         if (!$dbproblems) {
 578             return '';
 579         }
 580
 581         return $this->warning($dbproblems);
 582     }
 583
 584     /**
 585      * Renders cache warnings if there are any.
 586      *
 587      * @param string[] $cachewarnings
 588      * @return string
 589      */
 590     public function cache_warnings(array $cachewarnings) {
 591         if (!count($cachewarnings)) {
 592             return '';
 593         }
 594         return join("\n", array_map(array($this, 'warning'), $cachewarnings));
 595     }
 596
 597     /**
 598      * Render an appropriate message if the site in in maintenance mode.
 599      * @param bool $maintenancemode
 600      * @return string HTML to output.
 601      */
 602     public function maintenance_mode_warning($maintenancemode) {
 603         if (!$maintenancemode) {
 604             return '';
 605         }
 606
 607         $url = new moodle_url('/admin/settings.php', array('section' => 'maintenancemode'));
 608         $url = $url->out(); // get_string() does not support objects in params
 609
 610         return $this->warning(get_string('sitemaintenancewarning2', 'admin', $url));
 611     }
 612
 613     /**
 614      * Display a warning about installing development code if necesary.
 615      * @param int $maturity
 616      * @return string HTML to output.
 617      */
 618     protected function maturity_warning($maturity) {
 619         if ($maturity == MATURITY_STABLE) {
 620             return ''; // No worries.
 621         }
 622
 623         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 624         return $this->warning(
 625                     $this->container(get_string('maturitycorewarning', 'admin', $maturitylevel)) .
 626                     $this->container($this->doc_link('admin/versions', get_string('morehelp'))),
 627                 'error');
 628     }
 629
 630     /*
 631      * If necessary, displays a warning about upgrading a test site.
 632      *
 633      * @param string $testsite
 634      * @return string HTML
 635      */
 636     protected function test_site_warning($testsite) {
 637
 638         if (!$testsite) {
 639             return '';
 640         }
 641
 642         $warning = (get_string('testsiteupgradewarning', 'admin', $testsite));
 643         return $this->warning($warning, 'error');
 644     }
 645
 646     /**
 647      * Output the copyright notice.
 648      * @return string HTML to output.
 649      */
 650     protected function moodle_copyright() {
 651         global $CFG;
 652
 653         //////////////////////////////////////////////////////////////////////////////////////////////////
 654         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 655         $copyrighttext = '<a href="http://moodle.org/">Moodle</a> '.
 656                          '<a href="http://docs.moodle.org/dev/Releases" title="'.$CFG->version.'">'.$CFG->release.'</a><br />'.
 657                          'Copyright &copy; 1999 onwards, Martin Dougiamas<br />'.
 658                          'and <a href="http://moodle.org/dev">many other contributors</a>.<br />'.
 659                          '<a href="http://docs.moodle.org/dev/License">GNU Public License</a>';
 660         //////////////////////////////////////////////////////////////////////////////////////////////////
 661
 662         return $this->box($copyrighttext, 'copyright');
 663     }
 664
 665     /**
 666      * Display a warning about installing development code if necesary.
 667      * @param int $maturity
 668      * @return string HTML to output.
 669      */
 670     protected function maturity_info($maturity) {
 671         if ($maturity == MATURITY_STABLE) {
 672             return ''; // No worries.
 673         }
 674
 675         $level = 'warning';
 676
 677         if ($maturity == MATURITY_ALPHA) {
 678             $level = 'error';
 679         }
 680
 681         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 682         $warningtext = get_string('maturitycoreinfo', 'admin', $maturitylevel);
 683         $warningtext .= ' ' . $this->doc_link('admin/versions', get_string('morehelp'));
 684         return $this->warning($warningtext, $level);
 685     }
 686
 687     /**
 688      * Displays the info about available Moodle core and plugin updates
 689      *
 690      * The structure of the $updates param has changed since 2.4. It contains not only updates
 691      * for the core itself, but also for all other installed plugins.
 692      *
 693      * @param array|null $updates array of (string)component => array of \core\update\info objects or null
 694      * @param int|null $fetch timestamp of the most recent updates fetch or null (unknown)
 695      * @return string
 696      */
 697     protected function available_updates($updates, $fetch) {
 698
 699         $updateinfo = '';
 700         $someupdateavailable = false;
 701         if (is_array($updates)) {
 702             if (is_array($updates['core'])) {
 703                 $someupdateavailable = true;
 704                 $updateinfo .= $this->heading(get_string('updateavailable', 'core_admin'), 3);
 705                 foreach ($updates['core'] as $update) {
 706                     $updateinfo .= $this->moodle_available_update_info($update);
 707                 }
 708                 $updateinfo .= html_writer::tag('p', get_string('updateavailablerecommendation', 'core_admin'),
 709                     array('class' => 'updateavailablerecommendation'));
 710             }
 711             unset($updates['core']);
 712             // If something has left in the $updates array now, it is updates for plugins.
 713             if (!empty($updates)) {
 714                 $someupdateavailable = true;
 715                 $updateinfo .= $this->heading(get_string('updateavailableforplugin', 'core_admin'), 3);
 716                 $pluginsoverviewurl = new moodle_url('/admin/plugins.php', array('updatesonly' => 1));
 717                 $updateinfo .= $this->container(get_string('pluginsoverviewsee', 'core_admin',
 718                     array('url' => $pluginsoverviewurl->out())));
 719             }
 720         }
 721
 722         if (!$someupdateavailable) {
 723             $now = time();
 724             if ($fetch and ($fetch <= $now) and ($now - $fetch < HOURSECS)) {
 725                 $updateinfo .= $this->heading(get_string('updateavailablenot', 'core_admin'), 3);
 726             }
 727         }
 728
 729         $updateinfo .= $this->container_start('checkforupdates');
 730         $fetchurl = new moodle_url('/admin/index.php', array('fetchupdates' => 1, 'sesskey' => sesskey(), 'cache' => 0));
 731         $updateinfo .= $this->single_button($fetchurl, get_string('checkforupdates', 'core_plugin'));
 732         if ($fetch) {
 733             $updateinfo .= $this->container(get_string('checkforupdateslast', 'core_plugin',
 734                 userdate($fetch, get_string('strftimedatetime', 'core_langconfig'))));
 735         }
 736         $updateinfo .= $this->container_end();
 737
 738         return $this->warning($updateinfo);
 739     }
 740
 741     /**
 742      * Display a warning about not being registered on Moodle.org if necesary.
 743      *
 744      * @param boolean $registered true if the site is registered on Moodle.org
 745      * @return string HTML to output.
 746      */
 747     protected function registration_warning($registered) {
 748
 749         if (!$registered) {
 750
 751             $registerbutton = $this->single_button(new moodle_url('/admin/registration/register.php',
 752                     array('huburl' =>  HUB_MOODLEORGHUBURL, 'hubname' => 'Moodle.org')),
 753                     get_string('register', 'admin'));
 754
 755             return $this->warning( get_string('registrationwarning', 'admin')
 756                     . '&nbsp;' . $this->help_icon('registration', 'admin') . $registerbutton );
 757         }
 758
 759         return '';
 760     }
 761
 762     /**
 763      * Helper method to render the information about the available Moodle update
 764      *
 765      * @param \core\update\info $updateinfo information about the available Moodle core update
 766      */
 767     protected function moodle_available_update_info(\core\update\info $updateinfo) {
 768
 769         $boxclasses = 'moodleupdateinfo';
 770         $info = array();
 771
 772         if (isset($updateinfo->release)) {
 773             $info[] = html_writer::tag('span', get_string('updateavailable_release', 'core_admin', $updateinfo->release),
 774                 array('class' => 'info release'));
 775         }
 776
 777         if (isset($updateinfo->version)) {
 778             $info[] = html_writer::tag('span', get_string('updateavailable_version', 'core_admin', $updateinfo->version),
 779                 array('class' => 'info version'));
 780         }
 781
 782         if (isset($updateinfo->maturity)) {
 783             $info[] = html_writer::tag('span', get_string('maturity'.$updateinfo->maturity, 'core_admin'),
 784                 array('class' => 'info maturity'));
 785             $boxclasses .= ' maturity'.$updateinfo->maturity;
 786         }
 787
 788         if (isset($updateinfo->download)) {
 789             $info[] = html_writer::link($updateinfo->download, get_string('download'), array('class' => 'info download'));
 790         }
 791
 792         if (isset($updateinfo->url)) {
 793             $info[] = html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin'),
 794                 array('class' => 'info more'));
 795         }
 796
 797         $box  = $this->output->box_start($boxclasses);
 798         $box .= $this->output->box(implode(html_writer::tag('span', ' ', array('class' => 'separator')), $info), '');
 799         $box .= $this->output->box_end();
 800
 801         return $box;
 802     }
 803
 804     /**
 805      * Display a link to the release notes.
 806      * @return string HTML to output.
 807      */
 808     protected function release_notes_link() {
 809         $releasenoteslink = get_string('releasenoteslink', 'admin', 'http://docs.moodle.org/dev/Releases');
 810         $releasenoteslink = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $releasenoteslink); // extremely ugly validation hack
 811         return $this->box($releasenoteslink, 'generalbox releasenoteslink');
 812     }
 813
 814     /**
 815      * Display the reload link that appears on several upgrade/install pages.
 816      * @return string HTML to output.
 817      */
 818     function upgrade_reload($url) {
 819         return html_writer::empty_tag('br') .
 820                 html_writer::tag('div',
 821                     html_writer::link($url, $this->pix_icon('i/reload', '', '', array('class' => 'icon icon-pre')) .
 822                             get_string('reload'), array('title' => get_string('reload'))),
 823                 array('class' => 'continuebutton')) . html_writer::empty_tag('br');
 824     }
 825
 826     /**
 827      * Displays all known plugins and information about their installation or upgrade
 828      *
 829      * This default implementation renders all plugins into one big table. The rendering
 830      * options support:
 831      *     (bool)full = false: whether to display up-to-date plugins, too
 832      *     (bool)xdep = false: display the plugins with unsatisified dependecies only
 833      *
 834      * @param core_plugin_manager $pluginman provides information about the plugins.
 835      * @param int $version the version of the Moodle code from version.php.
 836      * @param array $options rendering options
 837      * @return string HTML code
 838      */
 839     public function plugins_check_table(core_plugin_manager $pluginman, $version, array $options = array()) {
 840
 841         $plugininfo = $pluginman->get_plugins();
 842
 843         if (empty($plugininfo)) {
 844             return '';
 845         }
 846
 847         $options['full'] = isset($options['full']) ? (bool)$options['full'] : false;
 848         $options['xdep'] = isset($options['xdep']) ? (bool)$options['xdep'] : false;
 849
 850         $table = new html_table();
 851         $table->id = 'plugins-check';
 852         $table->head = array(
 853             get_string('displayname', 'core_plugin').' / '.get_string('rootdir', 'core_plugin'),
 854             get_string('versiondb', 'core_plugin'),
 855             get_string('versiondisk', 'core_plugin'),
 856             get_string('requires', 'core_plugin'),
 857             get_string('source', 'core_plugin').' / '.get_string('status', 'core_plugin'),
 858         );
 859         $table->colclasses = array(
 860             'displayname', 'versiondb', 'versiondisk', 'requires', 'status',
 861         );
 862         $table->data = array();
 863
 864         // Number of displayed plugins per type.
 865         $numdisplayed = array();
 866         // Number of plugins known to the plugin manager.
 867         $sumtotal = 0;
 868         // Number of plugins requiring attention.
 869         $sumattention = 0;
 870         // List of all components we can cancel installation of.
 871         $installabortable = $pluginman->list_cancellable_installations();
 872         // List of all components we can cancel upgrade of.
 873         $upgradeabortable = $pluginman->list_restorable_archives();
 874
 875         foreach ($plugininfo as $type => $plugins) {
 876
 877             $header = new html_table_cell($pluginman->plugintype_name_plural($type));
 878             $header->header = true;
 879             $header->colspan = count($table->head);
 880             $header = new html_table_row(array($header));
 881             $header->attributes['class'] = 'plugintypeheader type-' . $type;
 882
 883             $numdisplayed[$type] = 0;
 884
 885             if (empty($plugins) and $options['full']) {
 886                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
 887                 $msg->colspan = count($table->head);
 888                 $row = new html_table_row(array($msg));
 889                 $row->attributes['class'] .= 'msg msg-noneinstalled';
 890                 $table->data[] = $header;
 891                 $table->data[] = $row;
 892                 continue;
 893             }
 894
 895             $plugintyperows = array();
 896
 897             foreach ($plugins as $name => $plugin) {
 898                 $sumtotal++;
 899                 $row = new html_table_row();
 900                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
 901
 902                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name, null)) {
 903                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'smallicon pluginicon'));
 904                 } else {
 905                     $icon = '';
 906                 }
 907
 908                 $displayname = new html_table_cell(
 909                     $icon.
 910                     html_writer::span($plugin->displayname, 'pluginname').
 911                     html_writer::div($plugin->get_dir(), 'plugindir')
 912                 );
 913
 914                 $versiondb = new html_table_cell($plugin->versiondb);
 915                 $versiondisk = new html_table_cell($plugin->versiondisk);
 916
 917                 if ($isstandard = $plugin->is_standard()) {
 918                     $row->attributes['class'] .= ' standard';
 919                     $sourcelabel = html_writer::span(get_string('sourcestd', 'core_plugin'), 'sourcetext label');
 920                 } else {
 921                     $row->attributes['class'] .= ' extension';
 922                     $sourcelabel = html_writer::span(get_string('sourceext', 'core_plugin'), 'sourcetext label label-info');
 923                 }
 924
 925                 $coredependency = $plugin->is_core_dependency_satisfied($version);
 926                 $otherpluginsdependencies = $pluginman->are_dependencies_satisfied($plugin->get_other_required_plugins());
 927                 $dependenciesok = $coredependency && $otherpluginsdependencies;
 928
 929                 $statuscode = $plugin->get_status();
 930                 $row->attributes['class'] .= ' status-' . $statuscode;
 931                 $statusclass = 'statustext label ';
 932                 switch ($statuscode) {
 933                     case core_plugin_manager::PLUGIN_STATUS_NEW:
 934                         $statusclass .= $dependenciesok ? 'label-success' : 'label-warning';
 935                         break;
 936                     case core_plugin_manager::PLUGIN_STATUS_UPGRADE:
 937                         $statusclass .= $dependenciesok ? 'label-info' : 'label-warning';
 938                         break;
 939                     case core_plugin_manager::PLUGIN_STATUS_MISSING:
 940                     case core_plugin_manager::PLUGIN_STATUS_DOWNGRADE:
 941                     case core_plugin_manager::PLUGIN_STATUS_DELETE:
 942                         $statusclass .= 'label-important';
 943                         break;
 944                     case core_plugin_manager::PLUGIN_STATUS_NODB:
 945                     case core_plugin_manager::PLUGIN_STATUS_UPTODATE:
 946                         $statusclass .= $dependenciesok ? '' : 'label-warning';
 947                         break;
 948                 }
 949                 $status = html_writer::span(get_string('status_' . $statuscode, 'core_plugin'), $statusclass);
 950
 951                 if (!empty($installabortable[$plugin->component])) {
 952                     $status .= $this->output->single_button(
 953                         new moodle_url($this->page->url, array('abortinstall' => $plugin->component)),
 954                         get_string('cancelinstallone', 'core_plugin'),
 955                         'post',
 956                         array('class' => 'actionbutton cancelinstallone')
 957                     );
 958                 }
 959
 960                 if (!empty($upgradeabortable[$plugin->component])) {
 961                     $status .= $this->output->single_button(
 962                         new moodle_url($this->page->url, array('abortupgrade' => $plugin->component)),
 963                         get_string('cancelupgradeone', 'core_plugin'),
 964                         'post',
 965                         array('class' => 'actionbutton cancelupgradeone')
 966                     );
 967                 }
 968
 969                 $availableupdates = $plugin->available_updates();
 970                 if (!empty($availableupdates)) {
 971                     foreach ($availableupdates as $availableupdate) {
 972                         $status .= $this->plugin_available_update_info($pluginman, $availableupdate);
 973                     }
 974                 }
 975
 976                 $status = new html_table_cell($sourcelabel.' '.$status);
 977
 978                 $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version));
 979
 980                 $statusisboring = in_array($statuscode, array(
 981                         core_plugin_manager::PLUGIN_STATUS_NODB, core_plugin_manager::PLUGIN_STATUS_UPTODATE));
 982
 983                 if ($options['xdep']) {
 984                     // we want to see only plugins with failed dependencies
 985                     if ($dependenciesok) {
 986                         continue;
 987                     }
 988
 989                 } else if ($statusisboring and $dependenciesok and empty($availableupdates)) {
 990                     // no change is going to happen to the plugin - display it only
 991                     // if the user wants to see the full list
 992                     if (empty($options['full'])) {
 993                         continue;
 994                     }
 995
 996                 } else {
 997                     $sumattention++;
 998                 }
 999
1000                 // The plugin should be displayed.
1001                 $numdisplayed[$type]++;
1002                 $row->cells = array($displayname, $versiondb, $versiondisk, $requires, $status);
1003                 $plugintyperows[] = $row;
1004             }
1005
1006             if (empty($numdisplayed[$type]) and empty($options['full'])) {
1007                 continue;
1008             }
1009
1010             $table->data[] = $header;
1011             $table->data = array_merge($table->data, $plugintyperows);
1012         }
1013
1014         // Total number of displayed plugins.
1015         $sumdisplayed = array_sum($numdisplayed);
1016
1017         if ($options['xdep']) {
1018             // At the plugins dependencies check page, display the table only.
1019             return html_writer::table($table);
1020         }
1021
1022         $out = $this->output->container_start('', 'plugins-check-info');
1023
1024         if ($sumdisplayed == 0) {
1025             $out .= $this->output->heading(get_string('pluginchecknone', 'core_plugin'));
1026
1027         } else {
1028             if (empty($options['full'])) {
1029                 $out .= $this->output->heading(get_string('plugincheckattention', 'core_plugin'));
1030             } else {
1031                 $out .= $this->output->heading(get_string('plugincheckall', 'core_plugin'));
1032             }
1033         }
1034
1035         $out .= $this->output->container_start('actions');
1036
1037         $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1038         if ($installableupdates) {
1039             $out .= $this->output->single_button(
1040                 new moodle_url($this->page->url, array('installupdatex' => 1)),
1041                 get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1042                 'post',
1043                 array('class' => 'singlebutton updateavailableinstallall')
1044             );
1045         }
1046
1047         if ($installabortable) {
1048             $out .= $this->output->single_button(
1049                 new moodle_url($this->page->url, array('abortinstallx' => 1)),
1050                 get_string('cancelinstallall', 'core_plugin', count($installabortable)),
1051                 'post',
1052                 array('class' => 'singlebutton cancelinstallall')
1053             );
1054         }
1055
1056         if ($upgradeabortable) {
1057             $out .= $this->output->single_button(
1058                 new moodle_url($this->page->url, array('abortupgradex' => 1)),
1059                 get_string('cancelupgradeall', 'core_plugin', count($upgradeabortable)),
1060                 'post',
1061                 array('class' => 'singlebutton cancelupgradeall')
1062             );
1063         }
1064
1065         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 0)),
1066             get_string('plugincheckattention', 'core_plugin')).' '.html_writer::span($sumattention, 'badge'));
1067
1068         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 1)),
1069             get_string('plugincheckall', 'core_plugin')).' '.html_writer::span($sumtotal, 'badge'));
1070
1071         $out .= $this->output->container_end(); // End of .actions container.
1072         $out .= $this->output->container_end(); // End of #plugins-check-info container.
1073
1074         if ($sumdisplayed > 0 or $options['full']) {
1075             $out .= html_writer::table($table);
1076         }
1077
1078         return $out;
1079     }
1080
1081     /**
1082      * Display the continue / cancel widgets for the plugins management pages.
1083      *
1084      * @param null|moodle_url $continue URL for the continue button, should it be displayed
1085      * @param null|moodle_url $cancel URL for the cancel link, defaults to the current page
1086      * @return string HTML
1087      */
1088     public function plugins_management_confirm_buttons(moodle_url $continue=null, moodle_url $cancel=null) {
1089
1090         $out = html_writer::start_div('plugins-management-confirm-buttons');
1091
1092         if (!empty($continue)) {
1093             $out .= $this->output->single_button($continue, get_string('continue'), 'post', array('class' => 'continue'));
1094         }
1095
1096         if (empty($cancel)) {
1097             $cancel = $this->page->url;
1098         }
1099         $out .= html_writer::div(html_writer::link($cancel, get_string('cancel')), 'cancel');
1100
1101         return $out;
1102     }
1103
1104     /**
1105      * Displays the information about missing dependencies
1106      *
1107      * @param core_plugin_manager $pluginman
1108      * @return string
1109      */
1110     protected function missing_dependencies(core_plugin_manager $pluginman) {
1111
1112         $dependencies = $pluginman->missing_dependencies();
1113
1114         if (empty($dependencies)) {
1115             return '';
1116         }
1117
1118         $available = array();
1119         $unavailable = array();
1120         $unknown = array();
1121
1122         foreach ($dependencies as $component => $remoteinfo) {
1123             if ($remoteinfo === false) {
1124                 // The required version is not available. Let us check if there
1125                 // is at least some version in the plugins directory.
1126                 $remoteinfoanyversion = $pluginman->get_remote_plugin_info($component, ANY_VERSION, false);
1127                 if ($remoteinfoanyversion === false) {
1128                     $unknown[$component] = $component;
1129                 } else {
1130                     $unavailable[$component] = $remoteinfoanyversion;
1131                 }
1132             } else {
1133                 $available[$component] = $remoteinfo;
1134             }
1135         }
1136
1137         $out  = $this->output->container_start('plugins-check-dependencies');
1138
1139         if ($unavailable or $unknown) {
1140             $out .= $this->output->heading(get_string('misdepsunavail', 'core_plugin'));
1141             if ($unknown) {
1142                 $out .= $this->output->notification(get_string('misdepsunknownlist', 'core_plugin', implode($unknown, ', ')));
1143             }
1144             if ($unavailable) {
1145                 $unavailablelist = array();
1146                 foreach ($unavailable as $component => $remoteinfoanyversion) {
1147                     $unavailablelistitem = html_writer::link('https://moodle.org/plugins/view.php?plugin='.$component,
1148                         '<strong>'.$remoteinfoanyversion->name.'</strong>');
1149                     if ($remoteinfoanyversion->version) {
1150                         $unavailablelistitem .= ' ('.$component.' &gt; '.$remoteinfoanyversion->version->version.')';
1151                     } else {
1152                         $unavailablelistitem .= ' ('.$component.')';
1153                     }
1154                     $unavailablelist[] = $unavailablelistitem;
1155                 }
1156                 $out .= $this->output->notification(get_string('misdepsunavaillist', 'core_plugin',
1157                     implode($unavailablelist, ', ')));
1158             }
1159             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1160             $out .= ' '.html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1161                 get_string('dependencyuploadmissing', 'core_plugin'));
1162             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1163         }
1164
1165         if ($available) {
1166             $out .= $this->output->heading(get_string('misdepsavail', 'core_plugin'));
1167             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1168
1169             $installable = $pluginman->filter_installable($available);
1170             if ($installable) {
1171                 $out .= $this->output->single_button(
1172                     new moodle_url($this->page->url, array('installdepx' => 1)),
1173                     get_string('dependencyinstallmissing', 'core_plugin', count($installable)),
1174                     'post',
1175                     array('class' => 'singlebutton dependencyinstallmissing')
1176                 );
1177             }
1178
1179             $out .= html_writer::div(html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1180                 get_string('dependencyuploadmissing', 'core_plugin')), 'dependencyuploadmissing');
1181
1182             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1183
1184             $out .= $this->available_missing_dependencies_list($pluginman, $available);
1185         }
1186
1187         $out .= $this->output->container_end(); // End of .plugins-check-dependencies container.
1188
1189         return $out;
1190     }
1191
1192     /**
1193      * Displays the list if available missing dependencies.
1194      *
1195      * @param core_plugin_manager $pluginman
1196      * @param array $dependencies
1197      * @return string
1198      */
1199     protected function available_missing_dependencies_list(core_plugin_manager $pluginman, array $dependencies) {
1200         global $CFG;
1201
1202         $table = new html_table();
1203         $table->id = 'plugins-check-available-dependencies';
1204         $table->head = array(
1205             get_string('displayname', 'core_plugin'),
1206             get_string('release', 'core_plugin'),
1207             get_string('version', 'core_plugin'),
1208             get_string('supportedmoodleversions', 'core_plugin'),
1209             get_string('info', 'core'),
1210         );
1211         $table->colclasses = array('displayname', 'release', 'version', 'supportedmoodleversions', 'info');
1212         $table->data = array();
1213
1214         foreach ($dependencies as $plugin) {
1215
1216             $supportedmoodles = array();
1217             foreach ($plugin->version->supportedmoodles as $moodle) {
1218                 if ($CFG->branch == str_replace('.', '', $moodle->release)) {
1219                     $supportedmoodles[] = html_writer::span($moodle->release, 'label label-success');
1220                 } else {
1221                     $supportedmoodles[] = html_writer::span($moodle->release, 'label');
1222                 }
1223             }
1224
1225             $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1226             if ($requriedby) {
1227                 foreach ($requriedby as $ix => $val) {
1228                     $inf = $pluginman->get_plugin_info($val);
1229                     if ($inf) {
1230                         $requriedby[$ix] = $inf->displayname.' ('.$inf->component.')';
1231                     }
1232                 }
1233                 $info = html_writer::div(
1234                     get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1235                     'requiredby'
1236                 );
1237             } else {
1238                 $info = '';
1239             }
1240
1241             $info .= $this->output->container_start('actions');
1242
1243             $info .= html_writer::div(
1244                 html_writer::link('https://moodle.org/plugins/view.php?plugin='.$plugin->component,
1245                     get_string('misdepinfoplugin', 'core_plugin')),
1246                 'misdepinfoplugin'
1247             );
1248
1249             $info .= html_writer::div(
1250                 html_writer::link('https://moodle.org/plugins/pluginversion.php?id='.$plugin->version->id,
1251                     get_string('misdepinfoversion', 'core_plugin')),
1252                 'misdepinfoversion'
1253             );
1254
1255             $info .= html_writer::div(html_writer::link($plugin->version->downloadurl, get_string('download')), 'misdepdownload');
1256
1257             if ($pluginman->is_remote_plugin_installable($plugin->component, $plugin->version->version, $reason)) {
1258                 $info .= $this->output->single_button(
1259                     new moodle_url($this->page->url, array('installdep' => $plugin->component)),
1260                     get_string('dependencyinstall', 'core_plugin'),
1261                     'post',
1262                     array('class' => 'singlebutton dependencyinstall')
1263                 );
1264             } else {
1265                 $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1266                 if ($reasonhelp) {
1267                     $info .= html_writer::div($reasonhelp, 'reasonhelp dependencyinstall');
1268                 }
1269             }
1270
1271             $info .= $this->output->container_end(); // End of .actions container.
1272
1273             $table->data[] = array(
1274                 html_writer::div($plugin->name, 'name').' '.html_writer::div($plugin->component, 'component'),
1275                 $plugin->version->release,
1276                 $plugin->version->version,
1277                 implode($supportedmoodles, ' '),
1278                 $info
1279             );
1280         }
1281
1282         return html_writer::table($table);
1283     }
1284
1285     /**
1286      * Explain why {@link core_plugin_manager::is_remote_plugin_installable()} returned false.
1287      *
1288      * @param string $reason the reason code as returned by the plugin manager
1289      * @return string
1290      */
1291     protected function info_remote_plugin_not_installable($reason) {
1292
1293         if ($reason === 'notwritableplugintype' or $reason === 'notwritableplugin') {
1294             return $this->output->help_icon('notwritable', 'core_plugin', get_string('notwritable', 'core_plugin'));
1295         }
1296
1297         if ($reason === 'remoteunavailable') {
1298             return $this->output->help_icon('notdownloadable', 'core_plugin', get_string('notdownloadable', 'core_plugin'));
1299         }
1300
1301         return false;
1302     }
1303
1304     /**
1305      * Formats the information that needs to go in the 'Requires' column.
1306      * @param \core\plugininfo\base $plugin the plugin we are rendering the row for.
1307      * @param core_plugin_manager $pluginman provides data on all the plugins.
1308      * @param string $version
1309      * @return string HTML code
1310      */
1311     protected function required_column(\core\plugininfo\base $plugin, core_plugin_manager $pluginman, $version) {
1312
1313         $requires = array();
1314         $displayuploadlink = false;
1315         $displayupdateslink = false;
1316
1317         foreach ($pluginman->resolve_requirements($plugin, $version) as $reqname => $reqinfo) {
1318             if ($reqname === 'core') {
1319                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1320                     $class = 'requires-ok';
1321                     $label = '';
1322                 } else {
1323                     $class = 'requires-failed';
1324                     $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'label label-important');
1325                 }
1326                 $requires[] = html_writer::tag('li',
1327                     html_writer::span(get_string('moodleversion', 'core_plugin', $plugin->versionrequires), 'dep dep-core').
1328                     ' '.$label, array('class' => $class));
1329
1330             } else {
1331                 $actions = array();
1332
1333                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1334                     $label = '';
1335                     $class = 'requires-ok';
1336
1337                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_MISSING) {
1338                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1339                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'label label-warning');
1340                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'label label-warning');
1341                         $class = 'requires-failed requires-missing requires-available';
1342                         $actions[] = html_writer::link(
1343                             new moodle_url('https://moodle.org/plugins/view.php', array('plugin' => $reqname)),
1344                             get_string('misdepinfoplugin', 'core_plugin')
1345                         );
1346
1347                     } else {
1348                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'label label-important');
1349                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1350                             'label label-important');
1351                         $class = 'requires-failed requires-missing requires-unavailable';
1352                     }
1353                     $displayuploadlink = true;
1354
1355                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OUTDATED) {
1356                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1357                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'label label-warning');
1358                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'label label-warning');
1359                         $class = 'requires-failed requires-outdated requires-available';
1360                         $displayupdateslink = true;
1361
1362                     } else {
1363                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'label label-important');
1364                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1365                             'label label-important');
1366                         $class = 'requires-failed requires-outdated requires-unavailable';
1367                     }
1368                     $displayuploadlink = true;
1369                 }
1370
1371                 if ($reqinfo->reqver != ANY_VERSION) {
1372                     $str = 'otherpluginversion';
1373                 } else {
1374                     $str = 'otherplugin';
1375                 }
1376
1377                 $requires[] = html_writer::tag('li', html_writer::span(
1378                     get_string($str, 'core_plugin', array('component' => $reqname, 'version' => $reqinfo->reqver)),
1379                     'dep dep-plugin').' '.$label.' '.html_writer::span(implode(' | ', $actions), 'actions'),
1380                     array('class' => $class)
1381                 );
1382             }
1383         }
1384
1385         if (!$requires) {
1386             return '';
1387         }
1388
1389         $out = html_writer::tag('ul', implode("\n", $requires));
1390
1391         if ($displayuploadlink) {
1392             $out .= html_writer::div(
1393                 html_writer::link(
1394                     new moodle_url('/admin/tool/installaddon/'),
1395                     get_string('dependencyuploadmissing', 'core_plugin')
1396                 ),
1397                 'dependencyuploadmissing'
1398             );
1399         }
1400
1401         if ($displayupdateslink) {
1402             $out .= html_writer::div(
1403                 html_writer::link(
1404                     new moodle_url($this->page->url, array('sesskey' => sesskey(), 'fetchupdates' => 1)),
1405                     get_string('checkforupdates', 'core_plugin')
1406                 ),
1407                 'checkforupdates'
1408             );
1409         }
1410
1411         return $out;
1412
1413     }
1414
1415     /**
1416      * Prints an overview about the plugins - number of installed, number of extensions etc.
1417      *
1418      * @param core_plugin_manager $pluginman provides information about the plugins
1419      * @param array $options filtering options
1420      * @return string as usually
1421      */
1422     public function plugins_overview_panel(core_plugin_manager $pluginman, array $options = array()) {
1423
1424         $plugininfo = $pluginman->get_plugins();
1425
1426         $numtotal = $numextension = $numupdatable = 0;
1427
1428         foreach ($plugininfo as $type => $plugins) {
1429             foreach ($plugins as $name => $plugin) {
1430                 if ($plugin->available_updates()) {
1431                     $numupdatable++;
1432                 }
1433                 if ($plugin->get_status() === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1434                     continue;
1435                 }
1436                 $numtotal++;
1437                 if (!$plugin->is_standard()) {
1438                     $numextension++;
1439                 }
1440             }
1441         }
1442
1443         $infoall = html_writer::link(
1444             new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 0)),
1445             get_string('overviewall', 'core_plugin'),
1446             array('title' => get_string('filterall', 'core_plugin'))
1447         ).' '.html_writer::span($numtotal, 'badge number number-all');
1448
1449         $infoext = html_writer::link(
1450             new moodle_url($this->page->url, array('contribonly' => 1, 'updatesonly' => 0)),
1451             get_string('overviewext', 'core_plugin'),
1452             array('title' => get_string('filtercontribonly', 'core_plugin'))
1453         ).' '.html_writer::span($numextension, 'badge number number-additional');
1454
1455         if ($numupdatable) {
1456             $infoupdatable = html_writer::link(
1457                 new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 1)),
1458                 get_string('overviewupdatable', 'core_plugin'),
1459                 array('title' => get_string('filterupdatesonly', 'core_plugin'))
1460             ).' '.html_writer::span($numupdatable, 'badge badge-info number number-updatable');
1461         } else {
1462             // No updates, or the notifications disabled.
1463             $infoupdatable = '';
1464         }
1465
1466         $out = html_writer::start_div('', array('id' => 'plugins-overview-panel'));
1467
1468         if (!empty($options['updatesonly'])) {
1469             $out .= $this->output->heading(get_string('overviewupdatable', 'core_plugin'), 3);
1470         } else if (!empty($options['contribonly'])) {
1471             $out .= $this->output->heading(get_string('overviewext', 'core_plugin'), 3);
1472         }
1473
1474         if ($numupdatable) {
1475             $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1476             if ($installableupdates) {
1477                 $out .= $this->output->single_button(
1478                     new moodle_url($this->page->url, array('installupdatex' => 1)),
1479                     get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1480                     'post',
1481                     array('class' => 'singlebutton updateavailableinstallall')
1482                 );
1483             }
1484         }
1485
1486         $out .= html_writer::div($infoall, 'info info-all').
1487             html_writer::div($infoext, 'info info-ext').
1488             html_writer::div($infoupdatable, 'info info-updatable');
1489
1490         $out .= html_writer::end_div(); // End of #plugins-overview-panel block.
1491
1492         return $out;
1493     }
1494
1495     /**
1496      * Displays all known plugins and links to manage them
1497      *
1498      * This default implementation renders all plugins into one big table.
1499      *
1500      * @param core_plugin_manager $pluginman provides information about the plugins.
1501      * @param array $options filtering options
1502      * @return string HTML code
1503      */
1504     public function plugins_control_panel(core_plugin_manager $pluginman, array $options = array()) {
1505
1506         $plugininfo = $pluginman->get_plugins();
1507
1508         // Filter the list of plugins according the options.
1509         if (!empty($options['updatesonly'])) {
1510             $updateable = array();
1511             foreach ($plugininfo as $plugintype => $pluginnames) {
1512                 foreach ($pluginnames as $pluginname => $pluginfo) {
1513                     $pluginavailableupdates = $pluginfo->available_updates();
1514                     if (!empty($pluginavailableupdates)) {
1515                         foreach ($pluginavailableupdates as $pluginavailableupdate) {
1516                             $updateable[$plugintype][$pluginname] = $pluginfo;
1517                         }
1518                     }
1519                 }
1520             }
1521             $plugininfo = $updateable;
1522         }
1523
1524         if (!empty($options['contribonly'])) {
1525             $contribs = array();
1526             foreach ($plugininfo as $plugintype => $pluginnames) {
1527                 foreach ($pluginnames as $pluginname => $pluginfo) {
1528                     if (!$pluginfo->is_standard()) {
1529                         $contribs[$plugintype][$pluginname] = $pluginfo;
1530                     }
1531                 }
1532             }
1533             $plugininfo = $contribs;
1534         }
1535
1536         if (empty($plugininfo)) {
1537             return '';
1538         }
1539
1540         $table = new html_table();
1541         $table->id = 'plugins-control-panel';
1542         $table->head = array(
1543             get_string('displayname', 'core_plugin'),
1544             get_string('version', 'core_plugin'),
1545             get_string('availability', 'core_plugin'),
1546             get_string('actions', 'core_plugin'),
1547             get_string('notes','core_plugin'),
1548         );
1549         $table->headspan = array(1, 1, 1, 2, 1);
1550         $table->colclasses = array(
1551             'pluginname', 'version', 'availability', 'settings', 'uninstall', 'notes'
1552         );
1553
1554         foreach ($plugininfo as $type => $plugins) {
1555             $heading = $pluginman->plugintype_name_plural($type);
1556             $pluginclass = core_plugin_manager::resolve_plugininfo_class($type);
1557             if ($manageurl = $pluginclass::get_manage_url()) {
1558                 $heading .= $this->output->action_icon($manageurl, new pix_icon('i/settings',
1559                     get_string('settings', 'core_plugin')));
1560             }
1561             $header = new html_table_cell(html_writer::tag('span', $heading, array('id'=>'plugin_type_cell_'.$type)));
1562             $header->header = true;
1563             $header->colspan = array_sum($table->headspan);
1564             $header = new html_table_row(array($header));
1565             $header->attributes['class'] = 'plugintypeheader type-' . $type;
1566             $table->data[] = $header;
1567
1568             if (empty($plugins)) {
1569                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
1570                 $msg->colspan = array_sum($table->headspan);
1571                 $row = new html_table_row(array($msg));
1572                 $row->attributes['class'] .= 'msg msg-noneinstalled';
1573                 $table->data[] = $row;
1574                 continue;
1575             }
1576
1577             foreach ($plugins as $name => $plugin) {
1578                 $row = new html_table_row();
1579                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
1580
1581                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name)) {
1582                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'icon pluginicon'));
1583                 } else {
1584                     $icon = $this->output->pix_icon('spacer', '', 'moodle', array('class' => 'icon pluginicon noicon'));
1585                 }
1586                 $status = $plugin->get_status();
1587                 $row->attributes['class'] .= ' status-'.$status;
1588                 $pluginname  = html_writer::tag('div', $icon.$plugin->displayname, array('class' => 'displayname')).
1589                                html_writer::tag('div', $plugin->component, array('class' => 'componentname'));
1590                 $pluginname  = new html_table_cell($pluginname);
1591
1592                 $version = html_writer::div($plugin->versiondb, 'versionnumber');
1593                 if ((string)$plugin->release !== '') {
1594                     $version = html_writer::div($plugin->release, 'release').$version;
1595                 }
1596                 $version = new html_table_cell($version);
1597
1598                 $isenabled = $plugin->is_enabled();
1599                 if (is_null($isenabled)) {
1600                     $availability = new html_table_cell('');
1601                 } else if ($isenabled) {
1602                     $row->attributes['class'] .= ' enabled';
1603                     $availability = new html_table_cell(get_string('pluginenabled', 'core_plugin'));
1604                 } else {
1605                     $row->attributes['class'] .= ' disabled';
1606                     $availability = new html_table_cell(get_string('plugindisabled', 'core_plugin'));
1607                 }
1608
1609                 $settingsurl = $plugin->get_settings_url();
1610                 if (!is_null($settingsurl)) {
1611                     $settings = html_writer::link($settingsurl, get_string('settings', 'core_plugin'), array('class' => 'settings'));
1612                 } else {
1613                     $settings = '';
1614                 }
1615                 $settings = new html_table_cell($settings);
1616
1617                 if ($uninstallurl = $pluginman->get_uninstall_url($plugin->component, 'overview')) {
1618                     $uninstall = html_writer::link($uninstallurl, get_string('uninstall', 'core_plugin'));
1619                 } else {
1620                     $uninstall = '';
1621                 }
1622                 $uninstall = new html_table_cell($uninstall);
1623
1624                 if ($plugin->is_standard()) {
1625                     $row->attributes['class'] .= ' standard';
1626                     $source = '';
1627                 } else {
1628                     $row->attributes['class'] .= ' extension';
1629                     $source = html_writer::div(get_string('sourceext', 'core_plugin'), 'source label label-info');
1630                 }
1631
1632                 if ($status === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1633                     $msg = html_writer::div(get_string('status_missing', 'core_plugin'), 'statusmsg label label-important');
1634                 } else if ($status === core_plugin_manager::PLUGIN_STATUS_NEW) {
1635                     $msg = html_writer::div(get_string('status_new', 'core_plugin'), 'statusmsg label label-success');
1636                 } else {
1637                     $msg = '';
1638                 }
1639
1640                 $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1641                 if ($requriedby) {
1642                     $requiredby = html_writer::tag('div', get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1643                         array('class' => 'requiredby'));
1644                 } else {
1645                     $requiredby = '';
1646                 }
1647
1648                 $updateinfo = '';
1649                 if (is_array($plugin->available_updates())) {
1650                     foreach ($plugin->available_updates() as $availableupdate) {
1651                         $updateinfo .= $this->plugin_available_update_info($pluginman, $availableupdate);
1652                     }
1653                 }
1654
1655                 $notes = new html_table_cell($source.$msg.$requiredby.$updateinfo);
1656
1657                 $row->cells = array(
1658                     $pluginname, $version, $availability, $settings, $uninstall, $notes
1659                 );
1660                 $table->data[] = $row;
1661             }
1662         }
1663
1664         return html_writer::table($table);
1665     }
1666
1667     /**
1668      * Helper method to render the information about the available plugin update
1669      *
1670      * @param core_plugin_manager $pluginman plugin manager instance
1671      * @param \core\update\info $updateinfo information about the available update for the plugin
1672      */
1673     protected function plugin_available_update_info(core_plugin_manager $pluginman, \core\update\info $updateinfo) {
1674
1675         $boxclasses = 'pluginupdateinfo';
1676         $info = array();
1677
1678         if (isset($updateinfo->release)) {
1679             $info[] = html_writer::div(
1680                 get_string('updateavailable_release', 'core_plugin', $updateinfo->release),
1681                 'info release'
1682             );
1683         }
1684
1685         if (isset($updateinfo->maturity)) {
1686             $info[] = html_writer::div(
1687                 get_string('maturity'.$updateinfo->maturity, 'core_admin'),
1688                 'info maturity'
1689             );
1690             $boxclasses .= ' maturity'.$updateinfo->maturity;
1691         }
1692
1693         if (isset($updateinfo->download)) {
1694             $info[] = html_writer::div(
1695                 html_writer::link($updateinfo->download, get_string('download')),
1696                 'info download'
1697             );
1698         }
1699
1700         if (isset($updateinfo->url)) {
1701             $info[] = html_writer::div(
1702                 html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin')),
1703                 'info more'
1704             );
1705         }
1706
1707         $box = html_writer::start_div($boxclasses);
1708         $box .= html_writer::div(
1709             get_string('updateavailable', 'core_plugin', $updateinfo->version),
1710             'version'
1711         );
1712         $box .= html_writer::div(
1713             implode(html_writer::span(' ', 'separator'), $info),
1714             'infos'
1715         );
1716
1717         if ($pluginman->is_remote_plugin_installable($updateinfo->component, $updateinfo->version, $reason)) {
1718             $box .= $this->output->single_button(
1719                 new moodle_url($this->page->url, array('installupdate' => $updateinfo->component,
1720                     'installupdateversion' => $updateinfo->version)),
1721                 get_string('updateavailableinstall', 'core_admin'),
1722                 'post',
1723                 array('class' => 'singlebutton updateavailableinstall')
1724             );
1725         } else {
1726             $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1727             if ($reasonhelp) {
1728                 $box .= html_writer::div($reasonhelp, 'reasonhelp updateavailableinstall');
1729             }
1730         }
1731         $box .= html_writer::end_div();
1732
1733         return $box;
1734     }
1735
1736     /**
1737      * This function will render one beautiful table with all the environmental
1738      * configuration and how it suits Moodle needs.
1739      *
1740      * @param boolean $result final result of the check (true/false)
1741      * @param environment_results[] $environment_results array of results gathered
1742      * @return string HTML to output.
1743      */
1744     public function environment_check_table($result, $environment_results) {
1745         global $CFG;
1746
1747         // Table headers
1748         $servertable = new html_table();//table for server checks
1749         $servertable->head  = array(
1750             get_string('name'),
1751             get_string('info'),
1752             get_string('report'),
1753             get_string('plugin'),
1754             get_string('status'),
1755         );
1756         $servertable->colclasses = array('centeralign name', 'centeralign info', 'leftalign report', 'leftalign plugin', 'centeralign status');
1757         $servertable->attributes['class'] = 'admintable environmenttable generaltable';
1758         $servertable->id = 'serverstatus';
1759
1760         $serverdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1761
1762         $othertable = new html_table();//table for custom checks
1763         $othertable->head  = array(
1764             get_string('info'),
1765             get_string('report'),
1766             get_string('plugin'),
1767             get_string('status'),
1768         );
1769         $othertable->colclasses = array('aligncenter info', 'alignleft report', 'alignleft plugin', 'aligncenter status');
1770         $othertable->attributes['class'] = 'admintable environmenttable generaltable';
1771         $othertable->id = 'otherserverstatus';
1772
1773         $otherdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1774
1775         // Iterate over each environment_result
1776         $continue = true;
1777         foreach ($environment_results as $environment_result) {
1778             $errorline   = false;
1779             $warningline = false;
1780             $stringtouse = '';
1781             if ($continue) {
1782                 $type = $environment_result->getPart();
1783                 $info = $environment_result->getInfo();
1784                 $status = $environment_result->getStatus();
1785                 $plugin = $environment_result->getPluginName();
1786                 $error_code = $environment_result->getErrorCode();
1787                 // Process Report field
1788                 $rec = new stdClass();
1789                 // Something has gone wrong at parsing time
1790                 if ($error_code) {
1791                     $stringtouse = 'environmentxmlerror';
1792                     $rec->error_code = $error_code;
1793                     $status = get_string('error');
1794                     $errorline = true;
1795                     $continue = false;
1796                 }
1797
1798                 if ($continue) {
1799                     if ($rec->needed = $environment_result->getNeededVersion()) {
1800                         // We are comparing versions
1801                         $rec->current = $environment_result->getCurrentVersion();
1802                         if ($environment_result->getLevel() == 'required') {
1803                             $stringtouse = 'environmentrequireversion';
1804                         } else {
1805                             $stringtouse = 'environmentrecommendversion';
1806                         }
1807
1808                     } else if ($environment_result->getPart() == 'custom_check') {
1809                         // We are checking installed & enabled things
1810                         if ($environment_result->getLevel() == 'required') {
1811                             $stringtouse = 'environmentrequirecustomcheck';
1812                         } else {
1813                             $stringtouse = 'environmentrecommendcustomcheck';
1814                         }
1815
1816                     } else if ($environment_result->getPart() == 'php_setting') {
1817                         if ($status) {
1818                             $stringtouse = 'environmentsettingok';
1819                         } else if ($environment_result->getLevel() == 'required') {
1820                             $stringtouse = 'environmentmustfixsetting';
1821                         } else {
1822                             $stringtouse = 'environmentshouldfixsetting';
1823                         }
1824
1825                     } else {
1826                         if ($environment_result->getLevel() == 'required') {
1827                             $stringtouse = 'environmentrequireinstall';
1828                         } else {
1829                             $stringtouse = 'environmentrecommendinstall';
1830                         }
1831                     }
1832
1833                     // Calculate the status value
1834                     if ($environment_result->getBypassStr() != '') {            //Handle bypassed result (warning)
1835                         $status = get_string('bypassed');
1836                         $warningline = true;
1837                     } else if ($environment_result->getRestrictStr() != '') {   //Handle restricted result (error)
1838                         $status = get_string('restricted');
1839                         $errorline = true;
1840                     } else {
1841                         if ($status) {                                          //Handle ok result (ok)
1842                             $status = get_string('ok');
1843                         } else {
1844                             if ($environment_result->getLevel() == 'optional') {//Handle check result (warning)
1845                                 $status = get_string('check');
1846                                 $warningline = true;
1847                             } else {                                            //Handle error result (error)
1848                                 $status = get_string('check');
1849                                 $errorline = true;
1850                             }
1851                         }
1852                     }
1853                 }
1854
1855                 // Build the text
1856                 $linkparts = array();
1857                 $linkparts[] = 'admin/environment';
1858                 $linkparts[] = $type;
1859                 if (!empty($info)){
1860                    $linkparts[] = $info;
1861                 }
1862                 // Plugin environments do not have docs pages yet.
1863                 if (empty($CFG->docroot) or $environment_result->plugin) {
1864                     $report = get_string($stringtouse, 'admin', $rec);
1865                 } else {
1866                     $report = $this->doc_link(join($linkparts, '/'), get_string($stringtouse, 'admin', $rec));
1867                 }
1868
1869                 // Format error or warning line
1870                 if ($errorline || $warningline) {
1871                     $messagetype = $errorline? 'error':'warn';
1872                 } else {
1873                     $messagetype = 'ok';
1874                 }
1875                 $status = '<span class="'.$messagetype.'">'.$status.'</span>';
1876                 // Here we'll store all the feedback found
1877                 $feedbacktext = '';
1878                 // Append the feedback if there is some
1879                 $feedbacktext .= $environment_result->strToReport($environment_result->getFeedbackStr(), $messagetype);
1880                 //Append the bypass if there is some
1881                 $feedbacktext .= $environment_result->strToReport($environment_result->getBypassStr(), 'warn');
1882                 //Append the restrict if there is some
1883                 $feedbacktext .= $environment_result->strToReport($environment_result->getRestrictStr(), 'error');
1884
1885                 $report .= $feedbacktext;
1886
1887                 // Add the row to the table
1888                 if ($environment_result->getPart() == 'custom_check'){
1889                     $otherdata[$messagetype][] = array ($info, $report, $plugin, $status);
1890                 } else {
1891                     $serverdata[$messagetype][] = array ($type, $info, $report, $plugin, $status);
1892                 }
1893             }
1894         }
1895
1896         //put errors first in
1897         $servertable->data = array_merge($serverdata['error'], $serverdata['warn'], $serverdata['ok']);
1898         $othertable->data = array_merge($otherdata['error'], $otherdata['warn'], $otherdata['ok']);
1899
1900         // Print table
1901         $output = '';
1902         $output .= $this->heading(get_string('serverchecks', 'admin'));
1903         $output .= html_writer::table($servertable);
1904         if (count($othertable->data)){
1905             $output .= $this->heading(get_string('customcheck', 'admin'));
1906             $output .= html_writer::table($othertable);
1907         }
1908
1909         // Finally, if any error has happened, print the summary box
1910         if (!$result) {
1911             $output .= $this->box(get_string('environmenterrortodo', 'admin'), 'environmentbox errorbox');
1912         }
1913
1914         return $output;
1915     }
1916
1917     /**
1918      * Render a simple page for providing the upgrade key.
1919      *
1920      * @param moodle_url|string $url
1921      * @return string
1922      */
1923     public function upgradekey_form_page($url) {
1924
1925         $output = '';
1926         $output .= $this->header();
1927         $output .= $this->container_start('upgradekeyreq');
1928         $output .= $this->heading(get_string('upgradekeyreq', 'core_admin'));
1929         $output .= html_writer::start_tag('form', array('method' => 'POST', 'action' => $url));
1930         $output .= html_writer::empty_tag('input', array('name' => 'upgradekey', 'type' => 'password'));
1931         $output .= html_writer::empty_tag('input', array('value' => get_string('submit'), 'type' => 'submit'));
1932         $output .= html_writer::end_tag('form');
1933         $output .= $this->container_end();
1934         $output .= $this->footer();
1935
1936         return $output;
1937     }
1938 }