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                     'alert alert-warning mt-2');
 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      * @param array $eventshandlers Events 1 API handlers.
 279      * @param bool $themedesignermode Warn about the theme designer mode.
 280      * @param bool $devlibdir Warn about development libs directory presence.
 281      * @param bool $mobileconfigured Whether the mobile web services have been enabled
 282      * @param bool $overridetossl Whether or not ssl is being forced.
 283      * @param bool $invalidforgottenpasswordurl Whether the forgotten password URL does not link to a valid URL.
 284      * @param bool $croninfrequent If true, warn that cron hasn't run in the past few minutes
 285      *
 286      * @return string HTML to output.
 287      */
 288     public function admin_notifications_page($maturity, $insecuredataroot, $errorsdisplayed,
 289             $cronoverdue, $dbproblems, $maintenancemode, $availableupdates, $availableupdatesfetch,
 290             $buggyiconvnomb, $registered, array $cachewarnings = array(), $eventshandlers = 0,
 291             $themedesignermode = false, $devlibdir = false, $mobileconfigured = false,
 292             $overridetossl = false, $invalidforgottenpasswordurl = false, $croninfrequent = false) {
 293         global $CFG;
 294         $output = '';
 295
 296         $output .= $this->header();
 297         $output .= $this->maturity_info($maturity);
 298         $output .= $this->legacy_log_store_writing_error();
 299         $output .= empty($CFG->disableupdatenotifications) ? $this->available_updates($availableupdates, $availableupdatesfetch) : '';
 300         $output .= $this->insecure_dataroot_warning($insecuredataroot);
 301         $output .= $this->development_libs_directories_warning($devlibdir);
 302         $output .= $this->themedesignermode_warning($themedesignermode);
 303         $output .= $this->display_errors_warning($errorsdisplayed);
 304         $output .= $this->buggy_iconv_warning($buggyiconvnomb);
 305         $output .= $this->cron_overdue_warning($cronoverdue);
 306         $output .= $this->cron_infrequent_warning($croninfrequent);
 307         $output .= $this->db_problems($dbproblems);
 308         $output .= $this->maintenance_mode_warning($maintenancemode);
 309         $output .= $this->overridetossl_warning($overridetossl);
 310         $output .= $this->cache_warnings($cachewarnings);
 311         $output .= $this->events_handlers($eventshandlers);
 312         $output .= $this->registration_warning($registered);
 313         $output .= $this->mobile_configuration_warning($mobileconfigured);
 314         $output .= $this->forgotten_password_url_warning($invalidforgottenpasswordurl);
 315
 316         //////////////////////////////////////////////////////////////////////////////////////////////////
 317         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 318         $output .= $this->moodle_copyright();
 319         //////////////////////////////////////////////////////////////////////////////////////////////////
 320
 321         $output .= $this->footer();
 322
 323         return $output;
 324     }
 325
 326     /**
 327      * Display the plugin management page (admin/plugins.php).
 328      *
 329      * The filtering options array may contain following items:
 330      *  bool contribonly - show only contributed extensions
 331      *  bool updatesonly - show only plugins with an available update
 332      *
 333      * @param core_plugin_manager $pluginman
 334      * @param \core\update\checker $checker
 335      * @param array $options filtering options
 336      * @return string HTML to output.
 337      */
 338     public function plugin_management_page(core_plugin_manager $pluginman, \core\update\checker $checker, array $options = array()) {
 339
 340         $output = '';
 341
 342         $output .= $this->header();
 343         $output .= $this->heading(get_string('pluginsoverview', 'core_admin'));
 344         $output .= $this->check_for_updates_button($checker, $this->page->url);
 345         $output .= $this->plugins_overview_panel($pluginman, $options);
 346         $output .= $this->plugins_control_panel($pluginman, $options);
 347         $output .= $this->footer();
 348
 349         return $output;
 350     }
 351
 352     /**
 353      * Renders a button to fetch for available updates.
 354      *
 355      * @param \core\update\checker $checker
 356      * @param moodle_url $reloadurl
 357      * @return string HTML
 358      */
 359     public function check_for_updates_button(\core\update\checker $checker, $reloadurl) {
 360
 361         $output = '';
 362
 363         if ($checker->enabled()) {
 364             $output .= $this->container_start('checkforupdates');
 365             $output .= $this->single_button(
 366                 new moodle_url($reloadurl, array('fetchupdates' => 1)),
 367                 get_string('checkforupdates', 'core_plugin')
 368             );
 369             if ($timefetched = $checker->get_last_timefetched()) {
 370                 $timefetched = userdate($timefetched, get_string('strftimedatetime', 'core_langconfig'));
 371                 $output .= $this->container(get_string('checkforupdateslast', 'core_plugin', $timefetched), 'lasttimefetched');
 372             }
 373             $output .= $this->container_end();
 374         }
 375
 376         return $output;
 377     }
 378
 379     /**
 380      * Display a page to confirm the plugin uninstallation.
 381      *
 382      * @param core_plugin_manager $pluginman
 383      * @param \core\plugininfo\base $pluginfo
 384      * @param moodle_url $continueurl URL to continue after confirmation
 385      * @param moodle_url $cancelurl URL to to go if cancelled
 386      * @return string
 387      */
 388     public function plugin_uninstall_confirm_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo, moodle_url $continueurl, moodle_url $cancelurl) {
 389         $output = '';
 390
 391         $pluginname = $pluginman->plugin_name($pluginfo->component);
 392
 393         $confirm = '<p>' . get_string('uninstallconfirm', 'core_plugin', array('name' => $pluginname)) . '</p>';
 394         if ($extraconfirm = $pluginfo->get_uninstall_extra_warning()) {
 395             $confirm .= $extraconfirm;
 396         }
 397
 398         $output .= $this->output->header();
 399         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 400         $output .= $this->output->confirm($confirm, $continueurl, $cancelurl);
 401         $output .= $this->output->footer();
 402
 403         return $output;
 404     }
 405
 406     /**
 407      * Display a page with results of plugin uninstallation and offer removal of plugin files.
 408      *
 409      * @param core_plugin_manager $pluginman
 410      * @param \core\plugininfo\base $pluginfo
 411      * @param progress_trace_buffer $progress
 412      * @param moodle_url $continueurl URL to continue to remove the plugin folder
 413      * @return string
 414      */
 415     public function plugin_uninstall_results_removable_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo,
 416                                                             progress_trace_buffer $progress, moodle_url $continueurl) {
 417         $output = '';
 418
 419         $pluginname = $pluginman->plugin_name($pluginfo->component);
 420
 421         // Do not show navigation here, they must click one of the buttons.
 422         $this->page->set_pagelayout('maintenance');
 423         $this->page->set_cacheable(false);
 424
 425         $output .= $this->output->header();
 426         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 427
 428         $output .= $this->output->box($progress->get_buffer(), 'generalbox uninstallresultmessage');
 429
 430         $confirm = $this->output->container(get_string('uninstalldeleteconfirm', 'core_plugin',
 431             array('name' => $pluginname, 'rootdir' => $pluginfo->rootdir)), 'uninstalldeleteconfirm');
 432
 433         if ($repotype = $pluginman->plugin_external_source($pluginfo->component)) {
 434             $confirm .= $this->output->container(get_string('uninstalldeleteconfirmexternal', 'core_plugin', $repotype),
 435                 'alert alert-warning mt-2');
 436         }
 437
 438         // After any uninstall we must execute full upgrade to finish the cleanup!
 439         $output .= $this->output->confirm($confirm, $continueurl, new moodle_url('/admin/index.php'));
 440         $output .= $this->output->footer();
 441
 442         return $output;
 443     }
 444
 445     /**
 446      * Display a page with results of plugin uninstallation and inform about the need to remove plugin files manually.
 447      *
 448      * @param core_plugin_manager $pluginman
 449      * @param \core\plugininfo\base $pluginfo
 450      * @param progress_trace_buffer $progress
 451      * @return string
 452      */
 453     public function plugin_uninstall_results_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo, progress_trace_buffer $progress) {
 454         $output = '';
 455
 456         $pluginname = $pluginfo->component;
 457
 458         $output .= $this->output->header();
 459         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 460
 461         $output .= $this->output->box($progress->get_buffer(), 'generalbox uninstallresultmessage');
 462
 463         $output .= $this->output->box(get_string('uninstalldelete', 'core_plugin',
 464             array('name' => $pluginname, 'rootdir' => $pluginfo->rootdir)), 'generalbox uninstalldelete');
 465         $output .= $this->output->continue_button(new moodle_url('/admin/index.php'));
 466         $output .= $this->output->footer();
 467
 468         return $output;
 469     }
 470
 471     /**
 472      * Display the plugin management page (admin/environment.php).
 473      * @param array $versions
 474      * @param string $version
 475      * @param boolean $envstatus final result of env check (true/false)
 476      * @param array $environment_results array of results gathered
 477      * @return string HTML to output.
 478      */
 479     public function environment_check_page($versions, $version, $envstatus, $environment_results) {
 480         $output = '';
 481         $output .= $this->header();
 482
 483         // Print the component download link
 484         $output .= html_writer::tag('div', html_writer::link(
 485                     new moodle_url('/admin/environment.php', array('action' => 'updatecomponent', 'sesskey' => sesskey())),
 486                     get_string('updatecomponent', 'admin')),
 487                 array('class' => 'reportlink'));
 488
 489         // Heading.
 490         $output .= $this->heading(get_string('environment', 'admin'));
 491
 492         // Box with info and a menu to choose the version.
 493         $output .= $this->box_start();
 494         $output .= html_writer::tag('div', get_string('adminhelpenvironment'));
 495         $select = new single_select(new moodle_url('/admin/environment.php'), 'version', $versions, $version, null);
 496         $select->label = get_string('moodleversion');
 497         $output .= $this->render($select);
 498         $output .= $this->box_end();
 499
 500         // The results
 501         $output .= $this->environment_check_table($envstatus, $environment_results);
 502
 503         $output .= $this->footer();
 504         return $output;
 505     }
 506
 507     /**
 508      * Output a warning message, of the type that appears on the admin notifications page.
 509      * @param string $message the message to display.
 510      * @param string $type type class
 511      * @return string HTML to output.
 512      */
 513     protected function warning($message, $type = 'warning') {
 514         return $this->box($message, 'generalbox alert alert-' . $type);
 515     }
 516
 517     /**
 518      * Render an appropriate message if dataroot is insecure.
 519      * @param bool $insecuredataroot
 520      * @return string HTML to output.
 521      */
 522     protected function insecure_dataroot_warning($insecuredataroot) {
 523         global $CFG;
 524
 525         if ($insecuredataroot == INSECURE_DATAROOT_WARNING) {
 526             return $this->warning(get_string('datarootsecuritywarning', 'admin', $CFG->dataroot));
 527
 528         } else if ($insecuredataroot == INSECURE_DATAROOT_ERROR) {
 529             return $this->warning(get_string('datarootsecurityerror', 'admin', $CFG->dataroot), 'danger');
 530
 531         } else {
 532             return '';
 533         }
 534     }
 535
 536     /**
 537      * Render a warning that a directory with development libs is present.
 538      *
 539      * @param bool $devlibdir True if the warning should be displayed.
 540      * @return string
 541      */
 542     protected function development_libs_directories_warning($devlibdir) {
 543
 544         if ($devlibdir) {
 545             $moreinfo = new moodle_url('/report/security/index.php');
 546             $warning = get_string('devlibdirpresent', 'core_admin', ['moreinfourl' => $moreinfo->out()]);
 547             return $this->warning($warning, 'danger');
 548
 549         } else {
 550             return '';
 551         }
 552     }
 553
 554     /**
 555      * Render an appropriate message if dataroot is insecure.
 556      * @param bool $errorsdisplayed
 557      * @return string HTML to output.
 558      */
 559     protected function display_errors_warning($errorsdisplayed) {
 560         if (!$errorsdisplayed) {
 561             return '';
 562         }
 563
 564         return $this->warning(get_string('displayerrorswarning', 'admin'));
 565     }
 566
 567     /**
 568      * Render an appropriate message if themdesignermode is enabled.
 569      * @param bool $themedesignermode true if enabled
 570      * @return string HTML to output.
 571      */
 572     protected function themedesignermode_warning($themedesignermode) {
 573         if (!$themedesignermode) {
 574             return '';
 575         }
 576
 577         return $this->warning(get_string('themedesignermodewarning', 'admin'));
 578     }
 579
 580     /**
 581      * Render an appropriate message if iconv is buggy and mbstring missing.
 582      * @param bool $buggyiconvnomb
 583      * @return string HTML to output.
 584      */
 585     protected function buggy_iconv_warning($buggyiconvnomb) {
 586         if (!$buggyiconvnomb) {
 587             return '';
 588         }
 589
 590         return $this->warning(get_string('warningiconvbuggy', 'admin'));
 591     }
 592
 593     /**
 594      * Render an appropriate message if cron has not been run recently.
 595      * @param bool $cronoverdue
 596      * @return string HTML to output.
 597      */
 598     public function cron_overdue_warning($cronoverdue) {
 599         global $CFG;
 600         if (!$cronoverdue) {
 601             return '';
 602         }
 603
 604         $check = new \tool_task\check\cronrunning();
 605         $result = $check->get_result();
 606         return $this->warning($result->get_summary() . '&nbsp;' . $this->help_icon('cron', 'admin'));
 607     }
 608
 609     /**
 610      * Render an appropriate message if cron is not being run frequently (recommended every minute).
 611      *
 612      * @param bool $croninfrequent
 613      * @return string HTML to output.
 614      */
 615     public function cron_infrequent_warning(bool $croninfrequent) : string {
 616         global $CFG;
 617
 618         if (!$croninfrequent) {
 619             return '';
 620         }
 621
 622         $check = new \tool_task\check\cronrunning();
 623         $result = $check->get_result();
 624         return $this->warning($result->get_summary() . '&nbsp;' . $this->help_icon('cron', 'admin'));
 625     }
 626
 627     /**
 628      * Render an appropriate message if there are any problems with the DB set-up.
 629      * @param bool $dbproblems
 630      * @return string HTML to output.
 631      */
 632     public function db_problems($dbproblems) {
 633         if (!$dbproblems) {
 634             return '';
 635         }
 636
 637         return $this->warning($dbproblems);
 638     }
 639
 640     /**
 641      * Renders cache warnings if there are any.
 642      *
 643      * @param string[] $cachewarnings
 644      * @return string
 645      */
 646     public function cache_warnings(array $cachewarnings) {
 647         if (!count($cachewarnings)) {
 648             return '';
 649         }
 650         return join("\n", array_map(array($this, 'warning'), $cachewarnings));
 651     }
 652
 653     /**
 654      * Renders events 1 API handlers warning.
 655      *
 656      * @param array $eventshandlers
 657      * @return string
 658      */
 659     public function events_handlers($eventshandlers) {
 660         if ($eventshandlers) {
 661             $components = '';
 662             foreach ($eventshandlers as $eventhandler) {
 663                 $components .= $eventhandler->component . ', ';
 664             }
 665             $components = rtrim($components, ', ');
 666             return $this->warning(get_string('eventshandlersinuse', 'admin', $components));
 667         }
 668     }
 669
 670     /**
 671      * Render an appropriate message if the site in in maintenance mode.
 672      * @param bool $maintenancemode
 673      * @return string HTML to output.
 674      */
 675     public function maintenance_mode_warning($maintenancemode) {
 676         if (!$maintenancemode) {
 677             return '';
 678         }
 679
 680         $url = new moodle_url('/admin/settings.php', array('section' => 'maintenancemode'));
 681         $url = $url->out(); // get_string() does not support objects in params
 682
 683         return $this->warning(get_string('sitemaintenancewarning2', 'admin', $url));
 684     }
 685
 686     /**
 687      * Render a warning that ssl is forced because the site was on loginhttps.
 688      *
 689      * @param bool $overridetossl Whether or not ssl is being forced.
 690      * @return string
 691      */
 692     protected function overridetossl_warning($overridetossl) {
 693         if (!$overridetossl) {
 694             return '';
 695         }
 696         $warning = get_string('overridetossl', 'core_admin');
 697         return $this->warning($warning, 'warning');
 698     }
 699
 700     /**
 701      * Display a warning about installing development code if necesary.
 702      * @param int $maturity
 703      * @return string HTML to output.
 704      */
 705     protected function maturity_warning($maturity) {
 706         if ($maturity == MATURITY_STABLE) {
 707             return ''; // No worries.
 708         }
 709
 710         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 711         return $this->warning(
 712                     $this->container(get_string('maturitycorewarning', 'admin', $maturitylevel)) .
 713                     $this->container($this->doc_link('admin/versions', get_string('morehelp'))),
 714                 'danger');
 715     }
 716
 717     /*
 718      * If necessary, displays a warning about upgrading a test site.
 719      *
 720      * @param string $testsite
 721      * @return string HTML
 722      */
 723     protected function test_site_warning($testsite) {
 724
 725         if (!$testsite) {
 726             return '';
 727         }
 728
 729         $warning = (get_string('testsiteupgradewarning', 'admin', $testsite));
 730         return $this->warning($warning, 'danger');
 731     }
 732
 733     /**
 734      * Output the copyright notice.
 735      * @return string HTML to output.
 736      */
 737     protected function moodle_copyright() {
 738         global $CFG;
 739
 740         //////////////////////////////////////////////////////////////////////////////////////////////////
 741         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 742         $copyrighttext = '<a href="http://moodle.org/">Moodle</a> '.
 743                          '<a href="http://docs.moodle.org/dev/Releases" title="'.$CFG->version.'">'.$CFG->release.'</a><br />'.
 744                          'Copyright &copy; 1999 onwards, Martin Dougiamas<br />'.
 745                          'and <a href="http://moodle.org/dev">many other contributors</a>.<br />'.
 746                          '<a href="http://docs.moodle.org/dev/License">GNU Public License</a>';
 747         //////////////////////////////////////////////////////////////////////////////////////////////////
 748
 749         return $this->box($copyrighttext, 'copyright');
 750     }
 751
 752     /**
 753      * Display a warning about installing development code if necesary.
 754      * @param int $maturity
 755      * @return string HTML to output.
 756      */
 757     protected function maturity_info($maturity) {
 758         if ($maturity == MATURITY_STABLE) {
 759             return ''; // No worries.
 760         }
 761
 762         $level = 'warning';
 763
 764         if ($maturity == MATURITY_ALPHA) {
 765             $level = 'danger';
 766         }
 767
 768         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 769         $warningtext = get_string('maturitycoreinfo', 'admin', $maturitylevel);
 770         $warningtext .= ' ' . $this->doc_link('admin/versions', get_string('morehelp'));
 771         return $this->warning($warningtext, $level);
 772     }
 773
 774     /**
 775      * Displays the info about available Moodle core and plugin updates
 776      *
 777      * The structure of the $updates param has changed since 2.4. It contains not only updates
 778      * for the core itself, but also for all other installed plugins.
 779      *
 780      * @param array|null $updates array of (string)component => array of \core\update\info objects or null
 781      * @param int|null $fetch timestamp of the most recent updates fetch or null (unknown)
 782      * @return string
 783      */
 784     protected function available_updates($updates, $fetch) {
 785
 786         $updateinfo = '';
 787         $someupdateavailable = false;
 788         if (is_array($updates)) {
 789             if (is_array($updates['core'])) {
 790                 $someupdateavailable = true;
 791                 $updateinfo .= $this->heading(get_string('updateavailable', 'core_admin'), 3);
 792                 foreach ($updates['core'] as $update) {
 793                     $updateinfo .= $this->moodle_available_update_info($update);
 794                 }
 795                 $updateinfo .= html_writer::tag('p', get_string('updateavailablerecommendation', 'core_admin'),
 796                     array('class' => 'updateavailablerecommendation'));
 797             }
 798             unset($updates['core']);
 799             // If something has left in the $updates array now, it is updates for plugins.
 800             if (!empty($updates)) {
 801                 $someupdateavailable = true;
 802                 $updateinfo .= $this->heading(get_string('updateavailableforplugin', 'core_admin'), 3);
 803                 $pluginsoverviewurl = new moodle_url('/admin/plugins.php', array('updatesonly' => 1));
 804                 $updateinfo .= $this->container(get_string('pluginsoverviewsee', 'core_admin',
 805                     array('url' => $pluginsoverviewurl->out())));
 806             }
 807         }
 808
 809         if (!$someupdateavailable) {
 810             $now = time();
 811             if ($fetch and ($fetch <= $now) and ($now - $fetch < HOURSECS)) {
 812                 $updateinfo .= $this->heading(get_string('updateavailablenot', 'core_admin'), 3);
 813             }
 814         }
 815
 816         $updateinfo .= $this->container_start('checkforupdates');
 817         $fetchurl = new moodle_url('/admin/index.php', array('fetchupdates' => 1, 'sesskey' => sesskey(), 'cache' => 0));
 818         $updateinfo .= $this->single_button($fetchurl, get_string('checkforupdates', 'core_plugin'));
 819         if ($fetch) {
 820             $updateinfo .= $this->container(get_string('checkforupdateslast', 'core_plugin',
 821                 userdate($fetch, get_string('strftimedatetime', 'core_langconfig'))));
 822         }
 823         $updateinfo .= $this->container_end();
 824
 825         return $this->warning($updateinfo);
 826     }
 827
 828     /**
 829      * Display a warning about not being registered on Moodle.org if necesary.
 830      *
 831      * @param boolean $registered true if the site is registered on Moodle.org
 832      * @return string HTML to output.
 833      */
 834     protected function registration_warning($registered) {
 835
 836         if (!$registered && site_is_public()) {
 837             if (has_capability('moodle/site:config', context_system::instance())) {
 838                 $registerbutton = $this->single_button(new moodle_url('/admin/registration/index.php'),
 839                     get_string('register', 'admin'));
 840                 $str = 'registrationwarning';
 841             } else {
 842                 $registerbutton = '';
 843                 $str = 'registrationwarningcontactadmin';
 844             }
 845
 846             return $this->warning( get_string($str, 'admin')
 847                     . '&nbsp;' . $this->help_icon('registration', 'admin') . $registerbutton ,
 848                 'error alert alert-danger');
 849         }
 850
 851         return '';
 852     }
 853
 854     /**
 855      * Return an admin page warning if site is not registered with moodle.org
 856      *
 857      * @return string
 858      */
 859     public function warn_if_not_registered() {
 860         return $this->registration_warning(\core\hub\registration::is_registered());
 861     }
 862
 863     /**
 864      * Display a warning about the Mobile Web Services being disabled.
 865      *
 866      * @param boolean $mobileconfigured true if mobile web services are enabled
 867      * @return string HTML to output.
 868      */
 869     protected function mobile_configuration_warning($mobileconfigured) {
 870         $output = '';
 871         if (!$mobileconfigured) {
 872             $settingslink = new moodle_url('/admin/settings.php', ['section' => 'mobilesettings']);
 873             $configurebutton = $this->single_button($settingslink, get_string('enablemobilewebservice', 'admin'));
 874             $output .= $this->warning(get_string('mobilenotconfiguredwarning', 'admin') . '&nbsp;' . $configurebutton);
 875         }
 876
 877         return $output;
 878     }
 879
 880     /**
 881      * Display a warning about the forgotten password URL not linking to a valid URL.
 882      *
 883      * @param boolean $invalidforgottenpasswordurl true if the forgotten password URL is not valid
 884      * @return string HTML to output.
 885      */
 886     protected function forgotten_password_url_warning($invalidforgottenpasswordurl) {
 887         $output = '';
 888         if ($invalidforgottenpasswordurl) {
 889             $settingslink = new moodle_url('/admin/settings.php', ['section' => 'manageauths']);
 890             $configurebutton = $this->single_button($settingslink, get_string('check', 'moodle'));
 891             $output .= $this->warning(get_string('invalidforgottenpasswordurl', 'admin') . '&nbsp;' . $configurebutton,
 892                 'error alert alert-danger');
 893         }
 894
 895         return $output;
 896     }
 897
 898     /**
 899      * Helper method to render the information about the available Moodle update
 900      *
 901      * @param \core\update\info $updateinfo information about the available Moodle core update
 902      */
 903     protected function moodle_available_update_info(\core\update\info $updateinfo) {
 904
 905         $boxclasses = 'moodleupdateinfo';
 906         $info = array();
 907
 908         if (isset($updateinfo->release)) {
 909             $info[] = html_writer::tag('span', get_string('updateavailable_release', 'core_admin', $updateinfo->release),
 910                 array('class' => 'info release'));
 911         }
 912
 913         if (isset($updateinfo->version)) {
 914             $info[] = html_writer::tag('span', get_string('updateavailable_version', 'core_admin', $updateinfo->version),
 915                 array('class' => 'info version'));
 916         }
 917
 918         if (isset($updateinfo->maturity)) {
 919             $info[] = html_writer::tag('span', get_string('maturity'.$updateinfo->maturity, 'core_admin'),
 920                 array('class' => 'info maturity'));
 921             $boxclasses .= ' maturity'.$updateinfo->maturity;
 922         }
 923
 924         if (isset($updateinfo->download)) {
 925             $info[] = html_writer::link($updateinfo->download, get_string('download'), array('class' => 'info download'));
 926         }
 927
 928         if (isset($updateinfo->url)) {
 929             $info[] = html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin'),
 930                 array('class' => 'info more'));
 931         }
 932
 933         $box  = $this->output->box_start($boxclasses);
 934         $box .= $this->output->box(implode(html_writer::tag('span', ' ', array('class' => 'separator')), $info), '');
 935         $box .= $this->output->box_end();
 936
 937         return $box;
 938     }
 939
 940     /**
 941      * Display a link to the release notes.
 942      * @return string HTML to output.
 943      */
 944     protected function release_notes_link() {
 945         $releasenoteslink = get_string('releasenoteslink', 'admin', 'http://docs.moodle.org/dev/Releases');
 946         $releasenoteslink = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $releasenoteslink); // extremely ugly validation hack
 947         return $this->box($releasenoteslink, 'generalbox alert alert-info');
 948     }
 949
 950     /**
 951      * Display the reload link that appears on several upgrade/install pages.
 952      * @return string HTML to output.
 953      */
 954     function upgrade_reload($url) {
 955         return html_writer::empty_tag('br') .
 956                 html_writer::tag('div',
 957                     html_writer::link($url, $this->pix_icon('i/reload', '', '', array('class' => 'icon icon-pre')) .
 958                             get_string('reload'), array('title' => get_string('reload'))),
 959                 array('class' => 'continuebutton')) . html_writer::empty_tag('br');
 960     }
 961
 962     /**
 963      * Displays all known plugins and information about their installation or upgrade
 964      *
 965      * This default implementation renders all plugins into one big table. The rendering
 966      * options support:
 967      *     (bool)full = false: whether to display up-to-date plugins, too
 968      *     (bool)xdep = false: display the plugins with unsatisified dependecies only
 969      *
 970      * @param core_plugin_manager $pluginman provides information about the plugins.
 971      * @param int $version the version of the Moodle code from version.php.
 972      * @param array $options rendering options
 973      * @return string HTML code
 974      */
 975     public function plugins_check_table(core_plugin_manager $pluginman, $version, array $options = array()) {
 976         global $CFG;
 977         $plugininfo = $pluginman->get_plugins();
 978
 979         if (empty($plugininfo)) {
 980             return '';
 981         }
 982
 983         $options['full'] = isset($options['full']) ? (bool)$options['full'] : false;
 984         $options['xdep'] = isset($options['xdep']) ? (bool)$options['xdep'] : false;
 985
 986         $table = new html_table();
 987         $table->id = 'plugins-check';
 988         $table->head = array(
 989             get_string('displayname', 'core_plugin').' / '.get_string('rootdir', 'core_plugin'),
 990             get_string('versiondb', 'core_plugin'),
 991             get_string('versiondisk', 'core_plugin'),
 992             get_string('requires', 'core_plugin'),
 993             get_string('source', 'core_plugin').' / '.get_string('status', 'core_plugin'),
 994         );
 995         $table->colclasses = array(
 996             'displayname', 'versiondb', 'versiondisk', 'requires', 'status',
 997         );
 998         $table->data = array();
 999
1000         // Number of displayed plugins per type.
1001         $numdisplayed = array();
1002         // Number of plugins known to the plugin manager.
1003         $sumtotal = 0;
1004         // Number of plugins requiring attention.
1005         $sumattention = 0;
1006         // List of all components we can cancel installation of.
1007         $installabortable = $pluginman->list_cancellable_installations();
1008         // List of all components we can cancel upgrade of.
1009         $upgradeabortable = $pluginman->list_restorable_archives();
1010
1011         foreach ($plugininfo as $type => $plugins) {
1012
1013             $header = new html_table_cell($pluginman->plugintype_name_plural($type));
1014             $header->header = true;
1015             $header->colspan = count($table->head);
1016             $header = new html_table_row(array($header));
1017             $header->attributes['class'] = 'plugintypeheader type-' . $type;
1018
1019             $numdisplayed[$type] = 0;
1020
1021             if (empty($plugins) and $options['full']) {
1022                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
1023                 $msg->colspan = count($table->head);
1024                 $row = new html_table_row(array($msg));
1025                 $row->attributes['class'] .= 'msg msg-noneinstalled';
1026                 $table->data[] = $header;
1027                 $table->data[] = $row;
1028                 continue;
1029             }
1030
1031             $plugintyperows = array();
1032
1033             foreach ($plugins as $name => $plugin) {
1034                 $sumtotal++;
1035                 $row = new html_table_row();
1036                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
1037
1038                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name, null)) {
1039                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'smallicon pluginicon'));
1040                 } else {
1041                     $icon = '';
1042                 }
1043
1044                 $displayname = new html_table_cell(
1045                     $icon.
1046                     html_writer::span($plugin->displayname, 'pluginname').
1047                     html_writer::div($plugin->get_dir(), 'plugindir')
1048                 );
1049
1050                 $versiondb = new html_table_cell($plugin->versiondb);
1051                 $versiondisk = new html_table_cell($plugin->versiondisk);
1052
1053                 if ($isstandard = $plugin->is_standard()) {
1054                     $row->attributes['class'] .= ' standard';
1055                     $sourcelabel = html_writer::span(get_string('sourcestd', 'core_plugin'), 'sourcetext badge badge-secondary');
1056                 } else {
1057                     $row->attributes['class'] .= ' extension';
1058                     $sourcelabel = html_writer::span(get_string('sourceext', 'core_plugin'), 'sourcetext badge badge-info');
1059                 }
1060
1061                 $coredependency = $plugin->is_core_dependency_satisfied($version);
1062                 $incompatibledependency = $plugin->is_core_compatible_satisfied($CFG->branch);
1063
1064                 $otherpluginsdependencies = $pluginman->are_dependencies_satisfied($plugin->get_other_required_plugins());
1065                 $dependenciesok = $coredependency && $otherpluginsdependencies && $incompatibledependency;
1066
1067                 $statuscode = $plugin->get_status();
1068                 $row->attributes['class'] .= ' status-' . $statuscode;
1069                 $statusclass = 'statustext badge ';
1070                 switch ($statuscode) {
1071                     case core_plugin_manager::PLUGIN_STATUS_NEW:
1072                         $statusclass .= $dependenciesok ? 'badge-success' : 'badge-warning';
1073                         break;
1074                     case core_plugin_manager::PLUGIN_STATUS_UPGRADE:
1075                         $statusclass .= $dependenciesok ? 'badge-info' : 'badge-warning';
1076                         break;
1077                     case core_plugin_manager::PLUGIN_STATUS_MISSING:
1078                     case core_plugin_manager::PLUGIN_STATUS_DOWNGRADE:
1079                     case core_plugin_manager::PLUGIN_STATUS_DELETE:
1080                         $statusclass .= 'badge-danger';
1081                         break;
1082                     case core_plugin_manager::PLUGIN_STATUS_NODB:
1083                     case core_plugin_manager::PLUGIN_STATUS_UPTODATE:
1084                         $statusclass .= $dependenciesok ? '' : 'badge-warning';
1085                         break;
1086                 }
1087                 $status = html_writer::span(get_string('status_' . $statuscode, 'core_plugin'), $statusclass);
1088
1089                 if (!empty($installabortable[$plugin->component])) {
1090                     $status .= $this->output->single_button(
1091                         new moodle_url($this->page->url, array('abortinstall' => $plugin->component)),
1092                         get_string('cancelinstallone', 'core_plugin'),
1093                         'post',
1094                         array('class' => 'actionbutton cancelinstallone')
1095                     );
1096                 }
1097
1098                 if (!empty($upgradeabortable[$plugin->component])) {
1099                     $status .= $this->output->single_button(
1100                         new moodle_url($this->page->url, array('abortupgrade' => $plugin->component)),
1101                         get_string('cancelupgradeone', 'core_plugin'),
1102                         'post',
1103                         array('class' => 'actionbutton cancelupgradeone')
1104                     );
1105                 }
1106
1107                 $availableupdates = $plugin->available_updates();
1108                 if (!empty($availableupdates)) {
1109                     foreach ($availableupdates as $availableupdate) {
1110                         $status .= $this->plugin_available_update_info($pluginman, $availableupdate);
1111                     }
1112                 }
1113
1114                 $status = new html_table_cell($sourcelabel.' '.$status);
1115                 if ($plugin->pluginsupported != null) {
1116                     $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version, $CFG->branch));
1117                 } else {
1118                     $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version));
1119                 }
1120
1121                 $statusisboring = in_array($statuscode, array(
1122                         core_plugin_manager::PLUGIN_STATUS_NODB, core_plugin_manager::PLUGIN_STATUS_UPTODATE));
1123
1124                 if ($options['xdep']) {
1125                     // we want to see only plugins with failed dependencies
1126                     if ($dependenciesok) {
1127                         continue;
1128                     }
1129
1130                 } else if ($statusisboring and $dependenciesok and empty($availableupdates)) {
1131                     // no change is going to happen to the plugin - display it only
1132                     // if the user wants to see the full list
1133                     if (empty($options['full'])) {
1134                         continue;
1135                     }
1136
1137                 } else {
1138                     $sumattention++;
1139                 }
1140
1141                 // The plugin should be displayed.
1142                 $numdisplayed[$type]++;
1143                 $row->cells = array($displayname, $versiondb, $versiondisk, $requires, $status);
1144                 $plugintyperows[] = $row;
1145             }
1146
1147             if (empty($numdisplayed[$type]) and empty($options['full'])) {
1148                 continue;
1149             }
1150
1151             $table->data[] = $header;
1152             $table->data = array_merge($table->data, $plugintyperows);
1153         }
1154
1155         // Total number of displayed plugins.
1156         $sumdisplayed = array_sum($numdisplayed);
1157
1158         if ($options['xdep']) {
1159             // At the plugins dependencies check page, display the table only.
1160             return html_writer::table($table);
1161         }
1162
1163         $out = $this->output->container_start('', 'plugins-check-info');
1164
1165         if ($sumdisplayed == 0) {
1166             $out .= $this->output->heading(get_string('pluginchecknone', 'core_plugin'));
1167
1168         } else {
1169             if (empty($options['full'])) {
1170                 $out .= $this->output->heading(get_string('plugincheckattention', 'core_plugin'));
1171             } else {
1172                 $out .= $this->output->heading(get_string('plugincheckall', 'core_plugin'));
1173             }
1174         }
1175
1176         $out .= $this->output->container_start('actions');
1177
1178         $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1179         if ($installableupdates) {
1180             $out .= $this->output->single_button(
1181                 new moodle_url($this->page->url, array('installupdatex' => 1)),
1182                 get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1183                 'post',
1184                 array('class' => 'singlebutton updateavailableinstallall')
1185             );
1186         }
1187
1188         if ($installabortable) {
1189             $out .= $this->output->single_button(
1190                 new moodle_url($this->page->url, array('abortinstallx' => 1)),
1191                 get_string('cancelinstallall', 'core_plugin', count($installabortable)),
1192                 'post',
1193                 array('class' => 'singlebutton cancelinstallall')
1194             );
1195         }
1196
1197         if ($upgradeabortable) {
1198             $out .= $this->output->single_button(
1199                 new moodle_url($this->page->url, array('abortupgradex' => 1)),
1200                 get_string('cancelupgradeall', 'core_plugin', count($upgradeabortable)),
1201                 'post',
1202                 array('class' => 'singlebutton cancelupgradeall')
1203             );
1204         }
1205
1206         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 0)),
1207             get_string('plugincheckattention', 'core_plugin')).' '.html_writer::span($sumattention, 'badge'));
1208
1209         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 1)),
1210             get_string('plugincheckall', 'core_plugin')).' '.html_writer::span($sumtotal, 'badge'));
1211
1212         $out .= $this->output->container_end(); // End of .actions container.
1213         $out .= $this->output->container_end(); // End of #plugins-check-info container.
1214
1215         if ($sumdisplayed > 0 or $options['full']) {
1216             $out .= html_writer::table($table);
1217         }
1218
1219         return $out;
1220     }
1221
1222     /**
1223      * Display the continue / cancel widgets for the plugins management pages.
1224      *
1225      * @param null|moodle_url $continue URL for the continue button, should it be displayed
1226      * @param null|moodle_url $cancel URL for the cancel link, defaults to the current page
1227      * @return string HTML
1228      */
1229     public function plugins_management_confirm_buttons(moodle_url $continue=null, moodle_url $cancel=null) {
1230
1231         $out = html_writer::start_div('plugins-management-confirm-buttons');
1232
1233         if (!empty($continue)) {
1234             $out .= $this->output->single_button($continue, get_string('continue'), 'post', array('class' => 'continue'));
1235         }
1236
1237         if (empty($cancel)) {
1238             $cancel = $this->page->url;
1239         }
1240         $out .= html_writer::div(html_writer::link($cancel, get_string('cancel')), 'cancel');
1241
1242         return $out;
1243     }
1244
1245     /**
1246      * Displays the information about missing dependencies
1247      *
1248      * @param core_plugin_manager $pluginman
1249      * @return string
1250      */
1251     protected function missing_dependencies(core_plugin_manager $pluginman) {
1252
1253         $dependencies = $pluginman->missing_dependencies();
1254
1255         if (empty($dependencies)) {
1256             return '';
1257         }
1258
1259         $available = array();
1260         $unavailable = array();
1261         $unknown = array();
1262
1263         foreach ($dependencies as $component => $remoteinfo) {
1264             if ($remoteinfo === false) {
1265                 // The required version is not available. Let us check if there
1266                 // is at least some version in the plugins directory.
1267                 $remoteinfoanyversion = $pluginman->get_remote_plugin_info($component, ANY_VERSION, false);
1268                 if ($remoteinfoanyversion === false) {
1269                     $unknown[$component] = $component;
1270                 } else {
1271                     $unavailable[$component] = $remoteinfoanyversion;
1272                 }
1273             } else {
1274                 $available[$component] = $remoteinfo;
1275             }
1276         }
1277
1278         $out  = $this->output->container_start('plugins-check-dependencies');
1279
1280         if ($unavailable or $unknown) {
1281             $out .= $this->output->heading(get_string('misdepsunavail', 'core_plugin'));
1282             if ($unknown) {
1283                 $out .= $this->output->notification(get_string('misdepsunknownlist', 'core_plugin', implode(', ', $unknown)));
1284             }
1285             if ($unavailable) {
1286                 $unavailablelist = array();
1287                 foreach ($unavailable as $component => $remoteinfoanyversion) {
1288                     $unavailablelistitem = html_writer::link('https://moodle.org/plugins/view.php?plugin='.$component,
1289                         '<strong>'.$remoteinfoanyversion->name.'</strong>');
1290                     if ($remoteinfoanyversion->version) {
1291                         $unavailablelistitem .= ' ('.$component.' &gt; '.$remoteinfoanyversion->version->version.')';
1292                     } else {
1293                         $unavailablelistitem .= ' ('.$component.')';
1294                     }
1295                     $unavailablelist[] = $unavailablelistitem;
1296                 }
1297                 $out .= $this->output->notification(get_string('misdepsunavaillist', 'core_plugin',
1298                     implode(', ', $unavailablelist)));
1299             }
1300             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1301             $out .= ' '.html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1302                 get_string('dependencyuploadmissing', 'core_plugin'));
1303             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1304         }
1305
1306         if ($available) {
1307             $out .= $this->output->heading(get_string('misdepsavail', 'core_plugin'));
1308             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1309
1310             $installable = $pluginman->filter_installable($available);
1311             if ($installable) {
1312                 $out .= $this->output->single_button(
1313                     new moodle_url($this->page->url, array('installdepx' => 1)),
1314                     get_string('dependencyinstallmissing', 'core_plugin', count($installable)),
1315                     'post',
1316                     array('class' => 'singlebutton dependencyinstallmissing')
1317                 );
1318             }
1319
1320             $out .= html_writer::div(html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1321                 get_string('dependencyuploadmissing', 'core_plugin')), 'dependencyuploadmissing');
1322
1323             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1324
1325             $out .= $this->available_missing_dependencies_list($pluginman, $available);
1326         }
1327
1328         $out .= $this->output->container_end(); // End of .plugins-check-dependencies container.
1329
1330         return $out;
1331     }
1332
1333     /**
1334      * Displays the list if available missing dependencies.
1335      *
1336      * @param core_plugin_manager $pluginman
1337      * @param array $dependencies
1338      * @return string
1339      */
1340     protected function available_missing_dependencies_list(core_plugin_manager $pluginman, array $dependencies) {
1341         global $CFG;
1342
1343         $table = new html_table();
1344         $table->id = 'plugins-check-available-dependencies';
1345         $table->head = array(
1346             get_string('displayname', 'core_plugin'),
1347             get_string('release', 'core_plugin'),
1348             get_string('version', 'core_plugin'),
1349             get_string('supportedmoodleversions', 'core_plugin'),
1350             get_string('info', 'core'),
1351         );
1352         $table->colclasses = array('displayname', 'release', 'version', 'supportedmoodleversions', 'info');
1353         $table->data = array();
1354
1355         foreach ($dependencies as $plugin) {
1356
1357             $supportedmoodles = array();
1358             foreach ($plugin->version->supportedmoodles as $moodle) {
1359                 if ($CFG->branch == str_replace('.', '', $moodle->release)) {
1360                     $supportedmoodles[] = html_writer::span($moodle->release, 'badge badge-success');
1361                 } else {
1362                     $supportedmoodles[] = html_writer::span($moodle->release, 'label');
1363                 }
1364             }
1365
1366             $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1367             if ($requriedby) {
1368                 foreach ($requriedby as $ix => $val) {
1369                     $inf = $pluginman->get_plugin_info($val);
1370                     if ($inf) {
1371                         $requriedby[$ix] = $inf->displayname.' ('.$inf->component.')';
1372                     }
1373                 }
1374                 $info = html_writer::div(
1375                     get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1376                     'requiredby'
1377                 );
1378             } else {
1379                 $info = '';
1380             }
1381
1382             $info .= $this->output->container_start('actions');
1383
1384             $info .= html_writer::div(
1385                 html_writer::link('https://moodle.org/plugins/view.php?plugin='.$plugin->component,
1386                     get_string('misdepinfoplugin', 'core_plugin')),
1387                 'misdepinfoplugin'
1388             );
1389
1390             $info .= html_writer::div(
1391                 html_writer::link('https://moodle.org/plugins/pluginversion.php?id='.$plugin->version->id,
1392                     get_string('misdepinfoversion', 'core_plugin')),
1393                 'misdepinfoversion'
1394             );
1395
1396             $info .= html_writer::div(html_writer::link($plugin->version->downloadurl, get_string('download')), 'misdepdownload');
1397
1398             if ($pluginman->is_remote_plugin_installable($plugin->component, $plugin->version->version, $reason)) {
1399                 $info .= $this->output->single_button(
1400                     new moodle_url($this->page->url, array('installdep' => $plugin->component)),
1401                     get_string('dependencyinstall', 'core_plugin'),
1402                     'post',
1403                     array('class' => 'singlebutton dependencyinstall')
1404                 );
1405             } else {
1406                 $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1407                 if ($reasonhelp) {
1408                     $info .= html_writer::div($reasonhelp, 'reasonhelp dependencyinstall');
1409                 }
1410             }
1411
1412             $info .= $this->output->container_end(); // End of .actions container.
1413
1414             $table->data[] = array(
1415                 html_writer::div($plugin->name, 'name').' '.html_writer::div($plugin->component, 'component'),
1416                 $plugin->version->release,
1417                 $plugin->version->version,
1418                 implode(' ', $supportedmoodles),
1419                 $info
1420             );
1421         }
1422
1423         return html_writer::table($table);
1424     }
1425
1426     /**
1427      * Explain why {@link core_plugin_manager::is_remote_plugin_installable()} returned false.
1428      *
1429      * @param string $reason the reason code as returned by the plugin manager
1430      * @return string
1431      */
1432     protected function info_remote_plugin_not_installable($reason) {
1433
1434         if ($reason === 'notwritableplugintype' or $reason === 'notwritableplugin') {
1435             return $this->output->help_icon('notwritable', 'core_plugin', get_string('notwritable', 'core_plugin'));
1436         }
1437
1438         if ($reason === 'remoteunavailable') {
1439             return $this->output->help_icon('notdownloadable', 'core_plugin', get_string('notdownloadable', 'core_plugin'));
1440         }
1441
1442         return false;
1443     }
1444
1445     /**
1446      * Formats the information that needs to go in the 'Requires' column.
1447      * @param \core\plugininfo\base $plugin the plugin we are rendering the row for.
1448      * @param core_plugin_manager $pluginman provides data on all the plugins.
1449      * @param string $version
1450      * @param int $branch the current Moodle branch
1451      * @return string HTML code
1452      */
1453     protected function required_column(\core\plugininfo\base $plugin, core_plugin_manager $pluginman, $version, $branch = null) {
1454
1455         $requires = array();
1456         $displayuploadlink = false;
1457         $displayupdateslink = false;
1458
1459         $requirements = $pluginman->resolve_requirements($plugin, $version, $branch);
1460         foreach ($requirements as $reqname => $reqinfo) {
1461             if ($reqname === 'core') {
1462                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1463                     $class = 'requires-ok';
1464                     $label = '';
1465                 } else {
1466                     $class = 'requires-failed';
1467                     $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'badge badge-danger');
1468                 }
1469
1470                 if ($branch != null && !$plugin->is_core_compatible_satisfied($branch)) {
1471                     $requires[] = html_writer::tag('li',
1472                     html_writer::span(get_string('incompatibleversion', 'core_plugin', $branch), 'dep dep-core').
1473                     ' '.$label, array('class' => $class));
1474
1475                 } else if ($branch != null && $plugin->pluginsupported != null) {
1476                     $requires[] = html_writer::tag('li',
1477                         html_writer::span(get_string('moodlebranch', 'core_plugin',
1478                         array('min' => $plugin->pluginsupported[0], 'max' => $plugin->pluginsupported[1])), 'dep dep-core').
1479                         ' '.$label, array('class' => $class));
1480
1481                 } else if ($reqinfo->reqver != ANY_VERSION) {
1482                     $requires[] = html_writer::tag('li',
1483                         html_writer::span(get_string('moodleversion', 'core_plugin', $plugin->versionrequires), 'dep dep-core').
1484                         ' '.$label, array('class' => $class));
1485                 }
1486
1487             } else {
1488                 $actions = array();
1489
1490                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1491                     $label = '';
1492                     $class = 'requires-ok';
1493
1494                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_MISSING) {
1495                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1496                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'badge badge-warning');
1497                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'badge badge-warning');
1498                         $class = 'requires-failed requires-missing requires-available';
1499                         $actions[] = html_writer::link(
1500                             new moodle_url('https://moodle.org/plugins/view.php', array('plugin' => $reqname)),
1501                             get_string('misdepinfoplugin', 'core_plugin')
1502                         );
1503
1504                     } else {
1505                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'badge badge-danger');
1506                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1507                             'badge badge-danger');
1508                         $class = 'requires-failed requires-missing requires-unavailable';
1509                     }
1510                     $displayuploadlink = true;
1511
1512                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OUTDATED) {
1513                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1514                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'badge badge-warning');
1515                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'badge badge-warning');
1516                         $class = 'requires-failed requires-outdated requires-available';
1517                         $displayupdateslink = true;
1518
1519                     } else {
1520                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'badge badge-danger');
1521                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1522                             'badge badge-danger');
1523                         $class = 'requires-failed requires-outdated requires-unavailable';
1524                     }
1525                     $displayuploadlink = true;
1526                 }
1527
1528                 if ($reqinfo->reqver != ANY_VERSION) {
1529                     $str = 'otherpluginversion';
1530                 } else {
1531                     $str = 'otherplugin';
1532                 }
1533
1534                 $requires[] = html_writer::tag('li', html_writer::span(
1535                     get_string($str, 'core_plugin', array('component' => $reqname, 'version' => $reqinfo->reqver)),
1536                     'dep dep-plugin').' '.$label.' '.html_writer::span(implode(' | ', $actions), 'actions'),
1537                     array('class' => $class)
1538                 );
1539             }
1540         }
1541
1542         if (!$requires) {
1543             return '';
1544         }
1545
1546         $out = html_writer::tag('ul', implode("\n", $requires));
1547
1548         if ($displayuploadlink) {
1549             $out .= html_writer::div(
1550                 html_writer::link(
1551                     new moodle_url('/admin/tool/installaddon/'),
1552                     get_string('dependencyuploadmissing', 'core_plugin')
1553                 ),
1554                 'dependencyuploadmissing'
1555             );
1556         }
1557
1558         if ($displayupdateslink) {
1559             $out .= html_writer::div(
1560                 html_writer::link(
1561                     new moodle_url($this->page->url, array('sesskey' => sesskey(), 'fetchupdates' => 1)),
1562                     get_string('checkforupdates', 'core_plugin')
1563                 ),
1564                 'checkforupdates'
1565             );
1566         }
1567
1568         // Check if supports is present, and $branch is not in, only if $incompatible check was ok.
1569         if ($plugin->pluginsupported != null && $class == 'requires-ok' && $branch != null) {
1570             if ($pluginman->check_explicitly_supported($plugin, $branch) == $pluginman::VERSION_NOT_SUPPORTED) {
1571                 $out .= html_writer::div(get_string('notsupported', 'core_plugin', $branch));
1572             }
1573         }
1574
1575         return $out;
1576
1577     }
1578
1579     /**
1580      * Prints an overview about the plugins - number of installed, number of extensions etc.
1581      *
1582      * @param core_plugin_manager $pluginman provides information about the plugins
1583      * @param array $options filtering options
1584      * @return string as usually
1585      */
1586     public function plugins_overview_panel(core_plugin_manager $pluginman, array $options = array()) {
1587
1588         $plugininfo = $pluginman->get_plugins();
1589
1590         $numtotal = $numextension = $numupdatable = 0;
1591
1592         foreach ($plugininfo as $type => $plugins) {
1593             foreach ($plugins as $name => $plugin) {
1594                 if ($plugin->available_updates()) {
1595                     $numupdatable++;
1596                 }
1597                 if ($plugin->get_status() === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1598                     continue;
1599                 }
1600                 $numtotal++;
1601                 if (!$plugin->is_standard()) {
1602                     $numextension++;
1603                 }
1604             }
1605         }
1606
1607         $infoall = html_writer::link(
1608             new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 0)),
1609             get_string('overviewall', 'core_plugin'),
1610             array('title' => get_string('filterall', 'core_plugin'))
1611         ).' '.html_writer::span($numtotal, 'badge number number-all');
1612
1613         $infoext = html_writer::link(
1614             new moodle_url($this->page->url, array('contribonly' => 1, 'updatesonly' => 0)),
1615             get_string('overviewext', 'core_plugin'),
1616             array('title' => get_string('filtercontribonly', 'core_plugin'))
1617         ).' '.html_writer::span($numextension, 'badge number number-additional');
1618
1619         if ($numupdatable) {
1620             $infoupdatable = html_writer::link(
1621                 new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 1)),
1622                 get_string('overviewupdatable', 'core_plugin'),
1623                 array('title' => get_string('filterupdatesonly', 'core_plugin'))
1624             ).' '.html_writer::span($numupdatable, 'badge badge-info number number-updatable');
1625         } else {
1626             // No updates, or the notifications disabled.
1627             $infoupdatable = '';
1628         }
1629
1630         $out = html_writer::start_div('', array('id' => 'plugins-overview-panel'));
1631
1632         if (!empty($options['updatesonly'])) {
1633             $out .= $this->output->heading(get_string('overviewupdatable', 'core_plugin'), 3);
1634         } else if (!empty($options['contribonly'])) {
1635             $out .= $this->output->heading(get_string('overviewext', 'core_plugin'), 3);
1636         }
1637
1638         if ($numupdatable) {
1639             $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1640             if ($installableupdates) {
1641                 $out .= $this->output->single_button(
1642                     new moodle_url($this->page->url, array('installupdatex' => 1)),
1643                     get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1644                     'post',
1645                     array('class' => 'singlebutton updateavailableinstallall')
1646                 );
1647             }
1648         }
1649
1650         $out .= html_writer::div($infoall, 'info info-all').
1651             html_writer::div($infoext, 'info info-ext').
1652             html_writer::div($infoupdatable, 'info info-updatable');
1653
1654         $out .= html_writer::end_div(); // End of #plugins-overview-panel block.
1655
1656         return $out;
1657     }
1658
1659     /**
1660      * Displays all known plugins and links to manage them
1661      *
1662      * This default implementation renders all plugins into one big table.
1663      *
1664      * @param core_plugin_manager $pluginman provides information about the plugins.
1665      * @param array $options filtering options
1666      * @return string HTML code
1667      */
1668     public function plugins_control_panel(core_plugin_manager $pluginman, array $options = array()) {
1669
1670         $plugininfo = $pluginman->get_plugins();
1671
1672         // Filter the list of plugins according the options.
1673         if (!empty($options['updatesonly'])) {
1674             $updateable = array();
1675             foreach ($plugininfo as $plugintype => $pluginnames) {
1676                 foreach ($pluginnames as $pluginname => $pluginfo) {
1677                     $pluginavailableupdates = $pluginfo->available_updates();
1678                     if (!empty($pluginavailableupdates)) {
1679                         foreach ($pluginavailableupdates as $pluginavailableupdate) {
1680                             $updateable[$plugintype][$pluginname] = $pluginfo;
1681                         }
1682                     }
1683                 }
1684             }
1685             $plugininfo = $updateable;
1686         }
1687
1688         if (!empty($options['contribonly'])) {
1689             $contribs = array();
1690             foreach ($plugininfo as $plugintype => $pluginnames) {
1691                 foreach ($pluginnames as $pluginname => $pluginfo) {
1692                     if (!$pluginfo->is_standard()) {
1693                         $contribs[$plugintype][$pluginname] = $pluginfo;
1694                     }
1695                 }
1696             }
1697             $plugininfo = $contribs;
1698         }
1699
1700         if (empty($plugininfo)) {
1701             return '';
1702         }
1703
1704         $table = new html_table();
1705         $table->id = 'plugins-control-panel';
1706         $table->head = array(
1707             get_string('displayname', 'core_plugin'),
1708             get_string('version', 'core_plugin'),
1709             get_string('availability', 'core_plugin'),
1710             get_string('actions', 'core_plugin'),
1711             get_string('notes','core_plugin'),
1712         );
1713         $table->headspan = array(1, 1, 1, 2, 1);
1714         $table->colclasses = array(
1715             'pluginname', 'version', 'availability', 'settings', 'uninstall', 'notes'
1716         );
1717
1718         foreach ($plugininfo as $type => $plugins) {
1719             $heading = $pluginman->plugintype_name_plural($type);
1720             $pluginclass = core_plugin_manager::resolve_plugininfo_class($type);
1721             if ($manageurl = $pluginclass::get_manage_url()) {
1722                 $heading .= $this->output->action_icon($manageurl, new pix_icon('i/settings',
1723                     get_string('settings', 'core_plugin')));
1724             }
1725             $header = new html_table_cell(html_writer::tag('span', $heading, array('id'=>'plugin_type_cell_'.$type)));
1726             $header->header = true;
1727             $header->colspan = array_sum($table->headspan);
1728             $header = new html_table_row(array($header));
1729             $header->attributes['class'] = 'plugintypeheader type-' . $type;
1730             $table->data[] = $header;
1731
1732             if (empty($plugins)) {
1733                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
1734                 $msg->colspan = array_sum($table->headspan);
1735                 $row = new html_table_row(array($msg));
1736                 $row->attributes['class'] .= 'msg msg-noneinstalled';
1737                 $table->data[] = $row;
1738                 continue;
1739             }
1740
1741             foreach ($plugins as $name => $plugin) {
1742                 $row = new html_table_row();
1743                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
1744
1745                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name, null)) {
1746                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'icon pluginicon'));
1747                 } else {
1748                     $icon = $this->output->spacer();
1749                 }
1750                 $status = $plugin->get_status();
1751                 $row->attributes['class'] .= ' status-'.$status;
1752                 $pluginname  = html_writer::tag('div', $icon.$plugin->displayname, array('class' => 'displayname')).
1753                                html_writer::tag('div', $plugin->component, array('class' => 'componentname'));
1754                 $pluginname  = new html_table_cell($pluginname);
1755
1756                 $version = html_writer::div($plugin->versiondb, 'versionnumber');
1757                 if ((string)$plugin->release !== '') {
1758                     $version = html_writer::div($plugin->release, 'release').$version;
1759                 }
1760                 $version = new html_table_cell($version);
1761
1762                 $isenabled = $plugin->is_enabled();
1763                 if (is_null($isenabled)) {
1764                     $availability = new html_table_cell('');
1765                 } else if ($isenabled) {
1766                     $row->attributes['class'] .= ' enabled';
1767                     $availability = new html_table_cell(get_string('pluginenabled', 'core_plugin'));
1768                 } else {
1769                     $row->attributes['class'] .= ' disabled';
1770                     $availability = new html_table_cell(get_string('plugindisabled', 'core_plugin'));
1771                 }
1772
1773                 $settingsurl = $plugin->get_settings_url();
1774                 if (!is_null($settingsurl)) {
1775                     $settings = html_writer::link($settingsurl, get_string('settings', 'core_plugin'), array('class' => 'settings'));
1776                 } else {
1777                     $settings = '';
1778                 }
1779                 $settings = new html_table_cell($settings);
1780
1781                 if ($uninstallurl = $pluginman->get_uninstall_url($plugin->component, 'overview')) {
1782                     $uninstall = html_writer::link($uninstallurl, get_string('uninstall', 'core_plugin'));
1783                 } else {
1784                     $uninstall = '';
1785                 }
1786                 $uninstall = new html_table_cell($uninstall);
1787
1788                 if ($plugin->is_standard()) {
1789                     $row->attributes['class'] .= ' standard';
1790                     $source = '';
1791                 } else {
1792                     $row->attributes['class'] .= ' extension';
1793                     $source = html_writer::div(get_string('sourceext', 'core_plugin'), 'source badge badge-info');
1794                 }
1795
1796                 if ($status === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1797                     $msg = html_writer::div(get_string('status_missing', 'core_plugin'), 'statusmsg badge badge-danger');
1798                 } else if ($status === core_plugin_manager::PLUGIN_STATUS_NEW) {
1799                     $msg = html_writer::div(get_string('status_new', 'core_plugin'), 'statusmsg badge badge-success');
1800                 } else {
1801                     $msg = '';
1802                 }
1803
1804                 $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1805                 if ($requriedby) {
1806                     $requiredby = html_writer::tag('div', get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1807                         array('class' => 'requiredby'));
1808                 } else {
1809                     $requiredby = '';
1810                 }
1811
1812                 $updateinfo = '';
1813                 if (is_array($plugin->available_updates())) {
1814                     foreach ($plugin->available_updates() as $availableupdate) {
1815                         $updateinfo .= $this->plugin_available_update_info($pluginman, $availableupdate);
1816                     }
1817                 }
1818
1819                 $notes = new html_table_cell($source.$msg.$requiredby.$updateinfo);
1820
1821                 $row->cells = array(
1822                     $pluginname, $version, $availability, $settings, $uninstall, $notes
1823                 );
1824                 $table->data[] = $row;
1825             }
1826         }
1827
1828         return html_writer::table($table);
1829     }
1830
1831     /**
1832      * Helper method to render the information about the available plugin update
1833      *
1834      * @param core_plugin_manager $pluginman plugin manager instance
1835      * @param \core\update\info $updateinfo information about the available update for the plugin
1836      */
1837     protected function plugin_available_update_info(core_plugin_manager $pluginman, \core\update\info $updateinfo) {
1838
1839         $boxclasses = 'pluginupdateinfo';
1840         $info = array();
1841
1842         if (isset($updateinfo->release)) {
1843             $info[] = html_writer::div(
1844                 get_string('updateavailable_release', 'core_plugin', $updateinfo->release),
1845                 'info release'
1846             );
1847         }
1848
1849         if (isset($updateinfo->maturity)) {
1850             $info[] = html_writer::div(
1851                 get_string('maturity'.$updateinfo->maturity, 'core_admin'),
1852                 'info maturity'
1853             );
1854             $boxclasses .= ' maturity'.$updateinfo->maturity;
1855         }
1856
1857         if (isset($updateinfo->download)) {
1858             $info[] = html_writer::div(
1859                 html_writer::link($updateinfo->download, get_string('download')),
1860                 'info download'
1861             );
1862         }
1863
1864         if (isset($updateinfo->url)) {
1865             $info[] = html_writer::div(
1866                 html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin')),
1867                 'info more'
1868             );
1869         }
1870
1871         $box = html_writer::start_div($boxclasses);
1872         $box .= html_writer::div(
1873             get_string('updateavailable', 'core_plugin', $updateinfo->version),
1874             'version'
1875         );
1876         $box .= html_writer::div(
1877             implode(html_writer::span(' ', 'separator'), $info),
1878             'infos'
1879         );
1880
1881         if ($pluginman->is_remote_plugin_installable($updateinfo->component, $updateinfo->version, $reason)) {
1882             $box .= $this->output->single_button(
1883                 new moodle_url($this->page->url, array('installupdate' => $updateinfo->component,
1884                     'installupdateversion' => $updateinfo->version)),
1885                 get_string('updateavailableinstall', 'core_admin'),
1886                 'post',
1887                 array('class' => 'singlebutton updateavailableinstall')
1888             );
1889         } else {
1890             $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1891             if ($reasonhelp) {
1892                 $box .= html_writer::div($reasonhelp, 'reasonhelp updateavailableinstall');
1893             }
1894         }
1895         $box .= html_writer::end_div();
1896
1897         return $box;
1898     }
1899
1900     /**
1901      * This function will render one beautiful table with all the environmental
1902      * configuration and how it suits Moodle needs.
1903      *
1904      * @param boolean $result final result of the check (true/false)
1905      * @param environment_results[] $environment_results array of results gathered
1906      * @return string HTML to output.
1907      */
1908     public function environment_check_table($result, $environment_results) {
1909         global $CFG;
1910
1911         // Table headers
1912         $servertable = new html_table();//table for server checks
1913         $servertable->head  = array(
1914             get_string('name'),
1915             get_string('info'),
1916             get_string('report'),
1917             get_string('plugin'),
1918             get_string('status'),
1919         );
1920         $servertable->colclasses = array('centeralign name', 'centeralign info', 'leftalign report', 'leftalign plugin', 'centeralign status');
1921         $servertable->attributes['class'] = 'admintable environmenttable generaltable table-sm';
1922         $servertable->id = 'serverstatus';
1923
1924         $serverdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1925
1926         $othertable = new html_table();//table for custom checks
1927         $othertable->head  = array(
1928             get_string('info'),
1929             get_string('report'),
1930             get_string('plugin'),
1931             get_string('status'),
1932         );
1933         $othertable->colclasses = array('aligncenter info', 'alignleft report', 'alignleft plugin', 'aligncenter status');
1934         $othertable->attributes['class'] = 'admintable environmenttable generaltable table-sm';
1935         $othertable->id = 'otherserverstatus';
1936
1937         $otherdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1938
1939         // Iterate over each environment_result
1940         $continue = true;
1941         foreach ($environment_results as $environment_result) {
1942             $errorline   = false;
1943             $warningline = false;
1944             $stringtouse = '';
1945             if ($continue) {
1946                 $type = $environment_result->getPart();
1947                 $info = $environment_result->getInfo();
1948                 $status = $environment_result->getStatus();
1949                 $plugin = $environment_result->getPluginName();
1950                 $error_code = $environment_result->getErrorCode();
1951                 // Process Report field
1952                 $rec = new stdClass();
1953                 // Something has gone wrong at parsing time
1954                 if ($error_code) {
1955                     $stringtouse = 'environmentxmlerror';
1956                     $rec->error_code = $error_code;
1957                     $status = get_string('error');
1958                     $errorline = true;
1959                     $continue = false;
1960                 }
1961
1962                 if ($continue) {
1963                     if ($rec->needed = $environment_result->getNeededVersion()) {
1964                         // We are comparing versions
1965                         $rec->current = $environment_result->getCurrentVersion();
1966                         if ($environment_result->getLevel() == 'required') {
1967                             $stringtouse = 'environmentrequireversion';
1968                         } else {
1969                             $stringtouse = 'environmentrecommendversion';
1970                         }
1971
1972                     } else if ($environment_result->getPart() == 'custom_check') {
1973                         // We are checking installed & enabled things
1974                         if ($environment_result->getLevel() == 'required') {
1975                             $stringtouse = 'environmentrequirecustomcheck';
1976                         } else {
1977                             $stringtouse = 'environmentrecommendcustomcheck';
1978                         }
1979
1980                     } else if ($environment_result->getPart() == 'php_setting') {
1981                         if ($status) {
1982                             $stringtouse = 'environmentsettingok';
1983                         } else if ($environment_result->getLevel() == 'required') {
1984                             $stringtouse = 'environmentmustfixsetting';
1985                         } else {
1986                             $stringtouse = 'environmentshouldfixsetting';
1987                         }
1988
1989                     } else {
1990                         if ($environment_result->getLevel() == 'required') {
1991                             $stringtouse = 'environmentrequireinstall';
1992                         } else {
1993                             $stringtouse = 'environmentrecommendinstall';
1994                         }
1995                     }
1996
1997                     // Calculate the status value
1998                     if ($environment_result->getBypassStr() != '') {            //Handle bypassed result (warning)
1999                         $status = get_string('bypassed');
2000                         $warningline = true;
2001                     } else if ($environment_result->getRestrictStr() != '') {   //Handle restricted result (error)
2002                         $status = get_string('restricted');
2003                         $errorline = true;
2004                     } else {
2005                         if ($status) {                                          //Handle ok result (ok)
2006                             $status = get_string('ok');
2007                         } else {
2008                             if ($environment_result->getLevel() == 'optional') {//Handle check result (warning)
2009                                 $status = get_string('check');
2010                                 $warningline = true;
2011                             } else {                                            //Handle error result (error)
2012                                 $status = get_string('check');
2013                                 $errorline = true;
2014                             }
2015                         }
2016                     }
2017                 }
2018
2019                 // Build the text
2020                 $linkparts = array();
2021                 $linkparts[] = 'admin/environment';
2022                 $linkparts[] = $type;
2023                 if (!empty($info)){
2024                    $linkparts[] = $info;
2025                 }
2026                 // Plugin environments do not have docs pages yet.
2027                 if (empty($CFG->docroot) or $environment_result->plugin) {
2028                     $report = get_string($stringtouse, 'admin', $rec);
2029                 } else {
2030                     $report = $this->doc_link(join('/', $linkparts), get_string($stringtouse, 'admin', $rec), true);
2031                 }
2032                 // Enclose report text in div so feedback text will be displayed underneath it.
2033                 $report = html_writer::div($report);
2034
2035                 // Format error or warning line
2036                 if ($errorline) {
2037                     $messagetype = 'error';
2038                     $statusclass = 'badge-danger';
2039                 } else if ($warningline) {
2040                     $messagetype = 'warn';
2041                     $statusclass = 'badge-warning';
2042                 } else {
2043                     $messagetype = 'ok';
2044                     $statusclass = 'badge-success';
2045                 }
2046                 $status = html_writer::span($status, 'badge ' . $statusclass);
2047                 // Here we'll store all the feedback found
2048                 $feedbacktext = '';
2049                 // Append the feedback if there is some
2050                 $feedbacktext .= $environment_result->strToReport($environment_result->getFeedbackStr(), $messagetype);
2051                 //Append the bypass if there is some
2052                 $feedbacktext .= $environment_result->strToReport($environment_result->getBypassStr(), 'warn');
2053                 //Append the restrict if there is some
2054                 $feedbacktext .= $environment_result->strToReport($environment_result->getRestrictStr(), 'error');
2055
2056                 $report .= $feedbacktext;
2057
2058                 // Add the row to the table
2059                 if ($environment_result->getPart() == 'custom_check'){
2060                     $otherdata[$messagetype][] = array ($info, $report, $plugin, $status);
2061                 } else {
2062                     $serverdata[$messagetype][] = array ($type, $info, $report, $plugin, $status);
2063                 }
2064             }
2065         }
2066
2067         //put errors first in
2068         $servertable->data = array_merge($serverdata['error'], $serverdata['warn'], $serverdata['ok']);
2069         $othertable->data = array_merge($otherdata['error'], $otherdata['warn'], $otherdata['ok']);
2070
2071         // Print table
2072         $output = '';
2073         $output .= $this->heading(get_string('serverchecks', 'admin'));
2074         $output .= html_writer::table($servertable);
2075         if (count($othertable->data)){
2076             $output .= $this->heading(get_string('customcheck', 'admin'));
2077             $output .= html_writer::table($othertable);
2078         }
2079
2080         // Finally, if any error has happened, print the summary box
2081         if (!$result) {
2082             $output .= $this->box(get_string('environmenterrortodo', 'admin'), 'environmentbox errorbox');
2083         }
2084
2085         return $output;
2086     }
2087
2088     /**
2089      * Render a simple page for providing the upgrade key.
2090      *
2091      * @param moodle_url|string $url
2092      * @return string
2093      */
2094     public function upgradekey_form_page($url) {
2095
2096         $output = '';
2097         $output .= $this->header();
2098         $output .= $this->container_start('upgradekeyreq');
2099         $output .= $this->heading(get_string('upgradekeyreq', 'core_admin'));
2100         $output .= html_writer::start_tag('form', array('method' => 'POST', 'action' => $url));
2101         $output .= html_writer::empty_tag('input', array('name' => 'upgradekey', 'type' => 'password'));
2102         $output .= html_writer::empty_tag('input', array('value' => get_string('submit'), 'type' => 'submit'));
2103         $output .= html_writer::end_tag('form');
2104         $output .= $this->container_end();
2105         $output .= $this->footer();
2106
2107         return $output;
2108     }
2109
2110     /**
2111      * Check to see if writing to the deprecated legacy log store is enabled.
2112      *
2113      * @return string An error message if writing to the legacy log store is enabled.
2114      */
2115     protected function legacy_log_store_writing_error() {
2116         $enabled = get_config('logstore_legacy', 'loglegacy');
2117         $plugins = explode(',', get_config('tool_log', 'enabled_stores'));
2118         $enabled = $enabled && in_array('logstore_legacy', $plugins);
2119
2120         if ($enabled) {
2121             return $this->warning(get_string('legacylogginginuse'));
2122         }
2123     }
2124
2125     /**
2126      * Display message about the benefits of registering on Moodle.org
2127      *
2128      * @return string
2129      */
2130     public function moodleorg_registration_message() {
2131
2132         $out = format_text(get_string('registerwithmoodleorginfo', 'core_hub'), FORMAT_MARKDOWN);
2133
2134         $out .= html_writer::link(
2135             new moodle_url('/admin/settings.php', ['section' => 'moodleservices']),
2136             $this->output->pix_icon('i/info', '').' '.get_string('registerwithmoodleorginfoapp', 'core_hub'),
2137             ['class' => 'btn btn-link', 'role' => 'opener', 'target' => '_href']
2138         );
2139
2140         $out .= html_writer::link(
2141             HUB_MOODLEORGHUBURL,
2142             $this->output->pix_icon('i/stats', '').' '.get_string('registerwithmoodleorginfostats', 'core_hub'),
2143             ['class' => 'btn btn-link', 'role' => 'opener', 'target' => '_href']
2144         );
2145
2146         $out .= html_writer::link(
2147             HUB_MOODLEORGHUBURL.'/sites',
2148             $this->output->pix_icon('i/location', '').' '.get_string('registerwithmoodleorginfosites', 'core_hub'),
2149             ['class' => 'btn btn-link', 'role' => 'opener', 'target' => '_href']
2150         );
2151
2152         return $this->output->box($out);
2153     }
2154 }