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         if (empty($CFG->cronclionly)) {
 605             $url = new moodle_url('/admin/cron.php');
 606             if (!empty($CFG->cronremotepassword)) {
 607                 $url = new moodle_url('/admin/cron.php', array('password' => $CFG->cronremotepassword));
 608             }
 609
 610             return $this->warning(get_string('cronwarning', 'admin', $url->out()) . '&nbsp;' .
 611                     $this->help_icon('cron', 'admin'));
 612         }
 613
 614         // $CFG->cronclionly is not empty: cron can run only from CLI.
 615         return $this->warning(get_string('cronwarningcli', 'admin') . '&nbsp;' .
 616                 $this->help_icon('cron', 'admin'));
 617     }
 618
 619     /**
 620      * Render an appropriate message if cron is not being run frequently (recommended every minute).
 621      *
 622      * @param bool $croninfrequent
 623      * @return string HTML to output.
 624      */
 625     public function cron_infrequent_warning(bool $croninfrequent) : string {
 626         global $CFG;
 627
 628         if (!$croninfrequent) {
 629             return '';
 630         }
 631
 632         $expectedfrequency = $CFG->expectedcronfrequency ?? 200;
 633         return $this->warning(get_string('croninfrequent', 'admin', $expectedfrequency) . '&nbsp;' .
 634                 $this->help_icon('cron', 'admin'));
 635     }
 636
 637     /**
 638      * Render an appropriate message if there are any problems with the DB set-up.
 639      * @param bool $dbproblems
 640      * @return string HTML to output.
 641      */
 642     public function db_problems($dbproblems) {
 643         if (!$dbproblems) {
 644             return '';
 645         }
 646
 647         return $this->warning($dbproblems);
 648     }
 649
 650     /**
 651      * Renders cache warnings if there are any.
 652      *
 653      * @param string[] $cachewarnings
 654      * @return string
 655      */
 656     public function cache_warnings(array $cachewarnings) {
 657         if (!count($cachewarnings)) {
 658             return '';
 659         }
 660         return join("\n", array_map(array($this, 'warning'), $cachewarnings));
 661     }
 662
 663     /**
 664      * Renders events 1 API handlers warning.
 665      *
 666      * @param array $eventshandlers
 667      * @return string
 668      */
 669     public function events_handlers($eventshandlers) {
 670         if ($eventshandlers) {
 671             $components = '';
 672             foreach ($eventshandlers as $eventhandler) {
 673                 $components .= $eventhandler->component . ', ';
 674             }
 675             $components = rtrim($components, ', ');
 676             return $this->warning(get_string('eventshandlersinuse', 'admin', $components));
 677         }
 678     }
 679
 680     /**
 681      * Render an appropriate message if the site in in maintenance mode.
 682      * @param bool $maintenancemode
 683      * @return string HTML to output.
 684      */
 685     public function maintenance_mode_warning($maintenancemode) {
 686         if (!$maintenancemode) {
 687             return '';
 688         }
 689
 690         $url = new moodle_url('/admin/settings.php', array('section' => 'maintenancemode'));
 691         $url = $url->out(); // get_string() does not support objects in params
 692
 693         return $this->warning(get_string('sitemaintenancewarning2', 'admin', $url));
 694     }
 695
 696     /**
 697      * Render a warning that ssl is forced because the site was on loginhttps.
 698      *
 699      * @param bool $overridetossl Whether or not ssl is being forced.
 700      * @return string
 701      */
 702     protected function overridetossl_warning($overridetossl) {
 703         if (!$overridetossl) {
 704             return '';
 705         }
 706         $warning = get_string('overridetossl', 'core_admin');
 707         return $this->warning($warning, 'warning');
 708     }
 709
 710     /**
 711      * Display a warning about installing development code if necesary.
 712      * @param int $maturity
 713      * @return string HTML to output.
 714      */
 715     protected function maturity_warning($maturity) {
 716         if ($maturity == MATURITY_STABLE) {
 717             return ''; // No worries.
 718         }
 719
 720         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 721         return $this->warning(
 722                     $this->container(get_string('maturitycorewarning', 'admin', $maturitylevel)) .
 723                     $this->container($this->doc_link('admin/versions', get_string('morehelp'))),
 724                 'danger');
 725     }
 726
 727     /*
 728      * If necessary, displays a warning about upgrading a test site.
 729      *
 730      * @param string $testsite
 731      * @return string HTML
 732      */
 733     protected function test_site_warning($testsite) {
 734
 735         if (!$testsite) {
 736             return '';
 737         }
 738
 739         $warning = (get_string('testsiteupgradewarning', 'admin', $testsite));
 740         return $this->warning($warning, 'danger');
 741     }
 742
 743     /**
 744      * Output the copyright notice.
 745      * @return string HTML to output.
 746      */
 747     protected function moodle_copyright() {
 748         global $CFG;
 749
 750         //////////////////////////////////////////////////////////////////////////////////////////////////
 751         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 752         $copyrighttext = '<a href="http://moodle.org/">Moodle</a> '.
 753                          '<a href="http://docs.moodle.org/dev/Releases" title="'.$CFG->version.'">'.$CFG->release.'</a><br />'.
 754                          'Copyright &copy; 1999 onwards, Martin Dougiamas<br />'.
 755                          'and <a href="http://moodle.org/dev">many other contributors</a>.<br />'.
 756                          '<a href="http://docs.moodle.org/dev/License">GNU Public License</a>';
 757         //////////////////////////////////////////////////////////////////////////////////////////////////
 758
 759         return $this->box($copyrighttext, 'copyright');
 760     }
 761
 762     /**
 763      * Display a warning about installing development code if necesary.
 764      * @param int $maturity
 765      * @return string HTML to output.
 766      */
 767     protected function maturity_info($maturity) {
 768         if ($maturity == MATURITY_STABLE) {
 769             return ''; // No worries.
 770         }
 771
 772         $level = 'warning';
 773
 774         if ($maturity == MATURITY_ALPHA) {
 775             $level = 'danger';
 776         }
 777
 778         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 779         $warningtext = get_string('maturitycoreinfo', 'admin', $maturitylevel);
 780         $warningtext .= ' ' . $this->doc_link('admin/versions', get_string('morehelp'));
 781         return $this->warning($warningtext, $level);
 782     }
 783
 784     /**
 785      * Displays the info about available Moodle core and plugin updates
 786      *
 787      * The structure of the $updates param has changed since 2.4. It contains not only updates
 788      * for the core itself, but also for all other installed plugins.
 789      *
 790      * @param array|null $updates array of (string)component => array of \core\update\info objects or null
 791      * @param int|null $fetch timestamp of the most recent updates fetch or null (unknown)
 792      * @return string
 793      */
 794     protected function available_updates($updates, $fetch) {
 795
 796         $updateinfo = '';
 797         $someupdateavailable = false;
 798         if (is_array($updates)) {
 799             if (is_array($updates['core'])) {
 800                 $someupdateavailable = true;
 801                 $updateinfo .= $this->heading(get_string('updateavailable', 'core_admin'), 3);
 802                 foreach ($updates['core'] as $update) {
 803                     $updateinfo .= $this->moodle_available_update_info($update);
 804                 }
 805                 $updateinfo .= html_writer::tag('p', get_string('updateavailablerecommendation', 'core_admin'),
 806                     array('class' => 'updateavailablerecommendation'));
 807             }
 808             unset($updates['core']);
 809             // If something has left in the $updates array now, it is updates for plugins.
 810             if (!empty($updates)) {
 811                 $someupdateavailable = true;
 812                 $updateinfo .= $this->heading(get_string('updateavailableforplugin', 'core_admin'), 3);
 813                 $pluginsoverviewurl = new moodle_url('/admin/plugins.php', array('updatesonly' => 1));
 814                 $updateinfo .= $this->container(get_string('pluginsoverviewsee', 'core_admin',
 815                     array('url' => $pluginsoverviewurl->out())));
 816             }
 817         }
 818
 819         if (!$someupdateavailable) {
 820             $now = time();
 821             if ($fetch and ($fetch <= $now) and ($now - $fetch < HOURSECS)) {
 822                 $updateinfo .= $this->heading(get_string('updateavailablenot', 'core_admin'), 3);
 823             }
 824         }
 825
 826         $updateinfo .= $this->container_start('checkforupdates');
 827         $fetchurl = new moodle_url('/admin/index.php', array('fetchupdates' => 1, 'sesskey' => sesskey(), 'cache' => 0));
 828         $updateinfo .= $this->single_button($fetchurl, get_string('checkforupdates', 'core_plugin'));
 829         if ($fetch) {
 830             $updateinfo .= $this->container(get_string('checkforupdateslast', 'core_plugin',
 831                 userdate($fetch, get_string('strftimedatetime', 'core_langconfig'))));
 832         }
 833         $updateinfo .= $this->container_end();
 834
 835         return $this->warning($updateinfo);
 836     }
 837
 838     /**
 839      * Display a warning about not being registered on Moodle.org if necesary.
 840      *
 841      * @param boolean $registered true if the site is registered on Moodle.org
 842      * @return string HTML to output.
 843      */
 844     protected function registration_warning($registered) {
 845
 846         if (!$registered && site_is_public()) {
 847             if (has_capability('moodle/site:config', context_system::instance())) {
 848                 $registerbutton = $this->single_button(new moodle_url('/admin/registration/index.php'),
 849                     get_string('register', 'admin'));
 850                 $str = 'registrationwarning';
 851             } else {
 852                 $registerbutton = '';
 853                 $str = 'registrationwarningcontactadmin';
 854             }
 855
 856             return $this->warning( get_string($str, 'admin')
 857                     . '&nbsp;' . $this->help_icon('registration', 'admin') . $registerbutton ,
 858                 'error alert alert-danger');
 859         }
 860
 861         return '';
 862     }
 863
 864     /**
 865      * Return an admin page warning if site is not registered with moodle.org
 866      *
 867      * @return string
 868      */
 869     public function warn_if_not_registered() {
 870         return $this->registration_warning(\core\hub\registration::is_registered());
 871     }
 872
 873     /**
 874      * Display a warning about the Mobile Web Services being disabled.
 875      *
 876      * @param boolean $mobileconfigured true if mobile web services are enabled
 877      * @return string HTML to output.
 878      */
 879     protected function mobile_configuration_warning($mobileconfigured) {
 880         $output = '';
 881         if (!$mobileconfigured) {
 882             $settingslink = new moodle_url('/admin/settings.php', ['section' => 'mobilesettings']);
 883             $configurebutton = $this->single_button($settingslink, get_string('enablemobilewebservice', 'admin'));
 884             $output .= $this->warning(get_string('mobilenotconfiguredwarning', 'admin') . '&nbsp;' . $configurebutton);
 885         }
 886
 887         return $output;
 888     }
 889
 890     /**
 891      * Display a warning about the forgotten password URL not linking to a valid URL.
 892      *
 893      * @param boolean $invalidforgottenpasswordurl true if the forgotten password URL is not valid
 894      * @return string HTML to output.
 895      */
 896     protected function forgotten_password_url_warning($invalidforgottenpasswordurl) {
 897         $output = '';
 898         if ($invalidforgottenpasswordurl) {
 899             $settingslink = new moodle_url('/admin/settings.php', ['section' => 'manageauths']);
 900             $configurebutton = $this->single_button($settingslink, get_string('check', 'moodle'));
 901             $output .= $this->warning(get_string('invalidforgottenpasswordurl', 'admin') . '&nbsp;' . $configurebutton,
 902                 'error alert alert-danger');
 903         }
 904
 905         return $output;
 906     }
 907
 908     /**
 909      * Helper method to render the information about the available Moodle update
 910      *
 911      * @param \core\update\info $updateinfo information about the available Moodle core update
 912      */
 913     protected function moodle_available_update_info(\core\update\info $updateinfo) {
 914
 915         $boxclasses = 'moodleupdateinfo';
 916         $info = array();
 917
 918         if (isset($updateinfo->release)) {
 919             $info[] = html_writer::tag('span', get_string('updateavailable_release', 'core_admin', $updateinfo->release),
 920                 array('class' => 'info release'));
 921         }
 922
 923         if (isset($updateinfo->version)) {
 924             $info[] = html_writer::tag('span', get_string('updateavailable_version', 'core_admin', $updateinfo->version),
 925                 array('class' => 'info version'));
 926         }
 927
 928         if (isset($updateinfo->maturity)) {
 929             $info[] = html_writer::tag('span', get_string('maturity'.$updateinfo->maturity, 'core_admin'),
 930                 array('class' => 'info maturity'));
 931             $boxclasses .= ' maturity'.$updateinfo->maturity;
 932         }
 933
 934         if (isset($updateinfo->download)) {
 935             $info[] = html_writer::link($updateinfo->download, get_string('download'), array('class' => 'info download'));
 936         }
 937
 938         if (isset($updateinfo->url)) {
 939             $info[] = html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin'),
 940                 array('class' => 'info more'));
 941         }
 942
 943         $box  = $this->output->box_start($boxclasses);
 944         $box .= $this->output->box(implode(html_writer::tag('span', ' ', array('class' => 'separator')), $info), '');
 945         $box .= $this->output->box_end();
 946
 947         return $box;
 948     }
 949
 950     /**
 951      * Display a link to the release notes.
 952      * @return string HTML to output.
 953      */
 954     protected function release_notes_link() {
 955         $releasenoteslink = get_string('releasenoteslink', 'admin', 'http://docs.moodle.org/dev/Releases');
 956         $releasenoteslink = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $releasenoteslink); // extremely ugly validation hack
 957         return $this->box($releasenoteslink, 'generalbox alert alert-info');
 958     }
 959
 960     /**
 961      * Display the reload link that appears on several upgrade/install pages.
 962      * @return string HTML to output.
 963      */
 964     function upgrade_reload($url) {
 965         return html_writer::empty_tag('br') .
 966                 html_writer::tag('div',
 967                     html_writer::link($url, $this->pix_icon('i/reload', '', '', array('class' => 'icon icon-pre')) .
 968                             get_string('reload'), array('title' => get_string('reload'))),
 969                 array('class' => 'continuebutton')) . html_writer::empty_tag('br');
 970     }
 971
 972     /**
 973      * Displays all known plugins and information about their installation or upgrade
 974      *
 975      * This default implementation renders all plugins into one big table. The rendering
 976      * options support:
 977      *     (bool)full = false: whether to display up-to-date plugins, too
 978      *     (bool)xdep = false: display the plugins with unsatisified dependecies only
 979      *
 980      * @param core_plugin_manager $pluginman provides information about the plugins.
 981      * @param int $version the version of the Moodle code from version.php.
 982      * @param array $options rendering options
 983      * @return string HTML code
 984      */
 985     public function plugins_check_table(core_plugin_manager $pluginman, $version, array $options = array()) {
 986         global $CFG;
 987         $plugininfo = $pluginman->get_plugins();
 988
 989         if (empty($plugininfo)) {
 990             return '';
 991         }
 992
 993         $options['full'] = isset($options['full']) ? (bool)$options['full'] : false;
 994         $options['xdep'] = isset($options['xdep']) ? (bool)$options['xdep'] : false;
 995
 996         $table = new html_table();
 997         $table->id = 'plugins-check';
 998         $table->head = array(
 999             get_string('displayname', 'core_plugin').' / '.get_string('rootdir', 'core_plugin'),
1000             get_string('versiondb', 'core_plugin'),
1001             get_string('versiondisk', 'core_plugin'),
1002             get_string('requires', 'core_plugin'),
1003             get_string('source', 'core_plugin').' / '.get_string('status', 'core_plugin'),
1004         );
1005         $table->colclasses = array(
1006             'displayname', 'versiondb', 'versiondisk', 'requires', 'status',
1007         );
1008         $table->data = array();
1009
1010         // Number of displayed plugins per type.
1011         $numdisplayed = array();
1012         // Number of plugins known to the plugin manager.
1013         $sumtotal = 0;
1014         // Number of plugins requiring attention.
1015         $sumattention = 0;
1016         // List of all components we can cancel installation of.
1017         $installabortable = $pluginman->list_cancellable_installations();
1018         // List of all components we can cancel upgrade of.
1019         $upgradeabortable = $pluginman->list_restorable_archives();
1020
1021         foreach ($plugininfo as $type => $plugins) {
1022
1023             $header = new html_table_cell($pluginman->plugintype_name_plural($type));
1024             $header->header = true;
1025             $header->colspan = count($table->head);
1026             $header = new html_table_row(array($header));
1027             $header->attributes['class'] = 'plugintypeheader type-' . $type;
1028
1029             $numdisplayed[$type] = 0;
1030
1031             if (empty($plugins) and $options['full']) {
1032                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
1033                 $msg->colspan = count($table->head);
1034                 $row = new html_table_row(array($msg));
1035                 $row->attributes['class'] .= 'msg msg-noneinstalled';
1036                 $table->data[] = $header;
1037                 $table->data[] = $row;
1038                 continue;
1039             }
1040
1041             $plugintyperows = array();
1042
1043             foreach ($plugins as $name => $plugin) {
1044                 $sumtotal++;
1045                 $row = new html_table_row();
1046                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
1047
1048                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name, null)) {
1049                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'smallicon pluginicon'));
1050                 } else {
1051                     $icon = '';
1052                 }
1053
1054                 $displayname = new html_table_cell(
1055                     $icon.
1056                     html_writer::span($plugin->displayname, 'pluginname').
1057                     html_writer::div($plugin->get_dir(), 'plugindir')
1058                 );
1059
1060                 $versiondb = new html_table_cell($plugin->versiondb);
1061                 $versiondisk = new html_table_cell($plugin->versiondisk);
1062
1063                 if ($isstandard = $plugin->is_standard()) {
1064                     $row->attributes['class'] .= ' standard';
1065                     $sourcelabel = html_writer::span(get_string('sourcestd', 'core_plugin'), 'sourcetext badge badge-secondary');
1066                 } else {
1067                     $row->attributes['class'] .= ' extension';
1068                     $sourcelabel = html_writer::span(get_string('sourceext', 'core_plugin'), 'sourcetext badge badge-info');
1069                 }
1070
1071                 $coredependency = $plugin->is_core_dependency_satisfied($version);
1072                 $incompatibledependency = $plugin->is_core_compatible_satisfied($CFG->branch);
1073
1074                 $otherpluginsdependencies = $pluginman->are_dependencies_satisfied($plugin->get_other_required_plugins());
1075                 $dependenciesok = $coredependency && $otherpluginsdependencies && $incompatibledependency;
1076
1077                 $statuscode = $plugin->get_status();
1078                 $row->attributes['class'] .= ' status-' . $statuscode;
1079                 $statusclass = 'statustext badge ';
1080                 switch ($statuscode) {
1081                     case core_plugin_manager::PLUGIN_STATUS_NEW:
1082                         $statusclass .= $dependenciesok ? 'badge-success' : 'badge-warning';
1083                         break;
1084                     case core_plugin_manager::PLUGIN_STATUS_UPGRADE:
1085                         $statusclass .= $dependenciesok ? 'badge-info' : 'badge-warning';
1086                         break;
1087                     case core_plugin_manager::PLUGIN_STATUS_MISSING:
1088                     case core_plugin_manager::PLUGIN_STATUS_DOWNGRADE:
1089                     case core_plugin_manager::PLUGIN_STATUS_DELETE:
1090                         $statusclass .= 'badge-danger';
1091                         break;
1092                     case core_plugin_manager::PLUGIN_STATUS_NODB:
1093                     case core_plugin_manager::PLUGIN_STATUS_UPTODATE:
1094                         $statusclass .= $dependenciesok ? '' : 'badge-warning';
1095                         break;
1096                 }
1097                 $status = html_writer::span(get_string('status_' . $statuscode, 'core_plugin'), $statusclass);
1098
1099                 if (!empty($installabortable[$plugin->component])) {
1100                     $status .= $this->output->single_button(
1101                         new moodle_url($this->page->url, array('abortinstall' => $plugin->component)),
1102                         get_string('cancelinstallone', 'core_plugin'),
1103                         'post',
1104                         array('class' => 'actionbutton cancelinstallone')
1105                     );
1106                 }
1107
1108                 if (!empty($upgradeabortable[$plugin->component])) {
1109                     $status .= $this->output->single_button(
1110                         new moodle_url($this->page->url, array('abortupgrade' => $plugin->component)),
1111                         get_string('cancelupgradeone', 'core_plugin'),
1112                         'post',
1113                         array('class' => 'actionbutton cancelupgradeone')
1114                     );
1115                 }
1116
1117                 $availableupdates = $plugin->available_updates();
1118                 if (!empty($availableupdates)) {
1119                     foreach ($availableupdates as $availableupdate) {
1120                         $status .= $this->plugin_available_update_info($pluginman, $availableupdate);
1121                     }
1122                 }
1123
1124                 $status = new html_table_cell($sourcelabel.' '.$status);
1125                 if ($plugin->pluginsupported != null) {
1126                     $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version, $CFG->branch));
1127                 } else {
1128                     $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version));
1129                 }
1130
1131                 $statusisboring = in_array($statuscode, array(
1132                         core_plugin_manager::PLUGIN_STATUS_NODB, core_plugin_manager::PLUGIN_STATUS_UPTODATE));
1133
1134                 if ($options['xdep']) {
1135                     // we want to see only plugins with failed dependencies
1136                     if ($dependenciesok) {
1137                         continue;
1138                     }
1139
1140                 } else if ($statusisboring and $dependenciesok and empty($availableupdates)) {
1141                     // no change is going to happen to the plugin - display it only
1142                     // if the user wants to see the full list
1143                     if (empty($options['full'])) {
1144                         continue;
1145                     }
1146
1147                 } else {
1148                     $sumattention++;
1149                 }
1150
1151                 // The plugin should be displayed.
1152                 $numdisplayed[$type]++;
1153                 $row->cells = array($displayname, $versiondb, $versiondisk, $requires, $status);
1154                 $plugintyperows[] = $row;
1155             }
1156
1157             if (empty($numdisplayed[$type]) and empty($options['full'])) {
1158                 continue;
1159             }
1160
1161             $table->data[] = $header;
1162             $table->data = array_merge($table->data, $plugintyperows);
1163         }
1164
1165         // Total number of displayed plugins.
1166         $sumdisplayed = array_sum($numdisplayed);
1167
1168         if ($options['xdep']) {
1169             // At the plugins dependencies check page, display the table only.
1170             return html_writer::table($table);
1171         }
1172
1173         $out = $this->output->container_start('', 'plugins-check-info');
1174
1175         if ($sumdisplayed == 0) {
1176             $out .= $this->output->heading(get_string('pluginchecknone', 'core_plugin'));
1177
1178         } else {
1179             if (empty($options['full'])) {
1180                 $out .= $this->output->heading(get_string('plugincheckattention', 'core_plugin'));
1181             } else {
1182                 $out .= $this->output->heading(get_string('plugincheckall', 'core_plugin'));
1183             }
1184         }
1185
1186         $out .= $this->output->container_start('actions');
1187
1188         $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1189         if ($installableupdates) {
1190             $out .= $this->output->single_button(
1191                 new moodle_url($this->page->url, array('installupdatex' => 1)),
1192                 get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1193                 'post',
1194                 array('class' => 'singlebutton updateavailableinstallall')
1195             );
1196         }
1197
1198         if ($installabortable) {
1199             $out .= $this->output->single_button(
1200                 new moodle_url($this->page->url, array('abortinstallx' => 1)),
1201                 get_string('cancelinstallall', 'core_plugin', count($installabortable)),
1202                 'post',
1203                 array('class' => 'singlebutton cancelinstallall')
1204             );
1205         }
1206
1207         if ($upgradeabortable) {
1208             $out .= $this->output->single_button(
1209                 new moodle_url($this->page->url, array('abortupgradex' => 1)),
1210                 get_string('cancelupgradeall', 'core_plugin', count($upgradeabortable)),
1211                 'post',
1212                 array('class' => 'singlebutton cancelupgradeall')
1213             );
1214         }
1215
1216         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 0)),
1217             get_string('plugincheckattention', 'core_plugin')).' '.html_writer::span($sumattention, 'badge'));
1218
1219         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 1)),
1220             get_string('plugincheckall', 'core_plugin')).' '.html_writer::span($sumtotal, 'badge'));
1221
1222         $out .= $this->output->container_end(); // End of .actions container.
1223         $out .= $this->output->container_end(); // End of #plugins-check-info container.
1224
1225         if ($sumdisplayed > 0 or $options['full']) {
1226             $out .= html_writer::table($table);
1227         }
1228
1229         return $out;
1230     }
1231
1232     /**
1233      * Display the continue / cancel widgets for the plugins management pages.
1234      *
1235      * @param null|moodle_url $continue URL for the continue button, should it be displayed
1236      * @param null|moodle_url $cancel URL for the cancel link, defaults to the current page
1237      * @return string HTML
1238      */
1239     public function plugins_management_confirm_buttons(moodle_url $continue=null, moodle_url $cancel=null) {
1240
1241         $out = html_writer::start_div('plugins-management-confirm-buttons');
1242
1243         if (!empty($continue)) {
1244             $out .= $this->output->single_button($continue, get_string('continue'), 'post', array('class' => 'continue'));
1245         }
1246
1247         if (empty($cancel)) {
1248             $cancel = $this->page->url;
1249         }
1250         $out .= html_writer::div(html_writer::link($cancel, get_string('cancel')), 'cancel');
1251
1252         return $out;
1253     }
1254
1255     /**
1256      * Displays the information about missing dependencies
1257      *
1258      * @param core_plugin_manager $pluginman
1259      * @return string
1260      */
1261     protected function missing_dependencies(core_plugin_manager $pluginman) {
1262
1263         $dependencies = $pluginman->missing_dependencies();
1264
1265         if (empty($dependencies)) {
1266             return '';
1267         }
1268
1269         $available = array();
1270         $unavailable = array();
1271         $unknown = array();
1272
1273         foreach ($dependencies as $component => $remoteinfo) {
1274             if ($remoteinfo === false) {
1275                 // The required version is not available. Let us check if there
1276                 // is at least some version in the plugins directory.
1277                 $remoteinfoanyversion = $pluginman->get_remote_plugin_info($component, ANY_VERSION, false);
1278                 if ($remoteinfoanyversion === false) {
1279                     $unknown[$component] = $component;
1280                 } else {
1281                     $unavailable[$component] = $remoteinfoanyversion;
1282                 }
1283             } else {
1284                 $available[$component] = $remoteinfo;
1285             }
1286         }
1287
1288         $out  = $this->output->container_start('plugins-check-dependencies');
1289
1290         if ($unavailable or $unknown) {
1291             $out .= $this->output->heading(get_string('misdepsunavail', 'core_plugin'));
1292             if ($unknown) {
1293                 $out .= $this->output->notification(get_string('misdepsunknownlist', 'core_plugin', implode(', ', $unknown)));
1294             }
1295             if ($unavailable) {
1296                 $unavailablelist = array();
1297                 foreach ($unavailable as $component => $remoteinfoanyversion) {
1298                     $unavailablelistitem = html_writer::link('https://moodle.org/plugins/view.php?plugin='.$component,
1299                         '<strong>'.$remoteinfoanyversion->name.'</strong>');
1300                     if ($remoteinfoanyversion->version) {
1301                         $unavailablelistitem .= ' ('.$component.' &gt; '.$remoteinfoanyversion->version->version.')';
1302                     } else {
1303                         $unavailablelistitem .= ' ('.$component.')';
1304                     }
1305                     $unavailablelist[] = $unavailablelistitem;
1306                 }
1307                 $out .= $this->output->notification(get_string('misdepsunavaillist', 'core_plugin',
1308                     implode(', ', $unavailablelist)));
1309             }
1310             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1311             $out .= ' '.html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1312                 get_string('dependencyuploadmissing', 'core_plugin'));
1313             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1314         }
1315
1316         if ($available) {
1317             $out .= $this->output->heading(get_string('misdepsavail', 'core_plugin'));
1318             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1319
1320             $installable = $pluginman->filter_installable($available);
1321             if ($installable) {
1322                 $out .= $this->output->single_button(
1323                     new moodle_url($this->page->url, array('installdepx' => 1)),
1324                     get_string('dependencyinstallmissing', 'core_plugin', count($installable)),
1325                     'post',
1326                     array('class' => 'singlebutton dependencyinstallmissing')
1327                 );
1328             }
1329
1330             $out .= html_writer::div(html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1331                 get_string('dependencyuploadmissing', 'core_plugin')), 'dependencyuploadmissing');
1332
1333             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1334
1335             $out .= $this->available_missing_dependencies_list($pluginman, $available);
1336         }
1337
1338         $out .= $this->output->container_end(); // End of .plugins-check-dependencies container.
1339
1340         return $out;
1341     }
1342
1343     /**
1344      * Displays the list if available missing dependencies.
1345      *
1346      * @param core_plugin_manager $pluginman
1347      * @param array $dependencies
1348      * @return string
1349      */
1350     protected function available_missing_dependencies_list(core_plugin_manager $pluginman, array $dependencies) {
1351         global $CFG;
1352
1353         $table = new html_table();
1354         $table->id = 'plugins-check-available-dependencies';
1355         $table->head = array(
1356             get_string('displayname', 'core_plugin'),
1357             get_string('release', 'core_plugin'),
1358             get_string('version', 'core_plugin'),
1359             get_string('supportedmoodleversions', 'core_plugin'),
1360             get_string('info', 'core'),
1361         );
1362         $table->colclasses = array('displayname', 'release', 'version', 'supportedmoodleversions', 'info');
1363         $table->data = array();
1364
1365         foreach ($dependencies as $plugin) {
1366
1367             $supportedmoodles = array();
1368             foreach ($plugin->version->supportedmoodles as $moodle) {
1369                 if ($CFG->branch == str_replace('.', '', $moodle->release)) {
1370                     $supportedmoodles[] = html_writer::span($moodle->release, 'badge badge-success');
1371                 } else {
1372                     $supportedmoodles[] = html_writer::span($moodle->release, 'label');
1373                 }
1374             }
1375
1376             $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1377             if ($requriedby) {
1378                 foreach ($requriedby as $ix => $val) {
1379                     $inf = $pluginman->get_plugin_info($val);
1380                     if ($inf) {
1381                         $requriedby[$ix] = $inf->displayname.' ('.$inf->component.')';
1382                     }
1383                 }
1384                 $info = html_writer::div(
1385                     get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1386                     'requiredby'
1387                 );
1388             } else {
1389                 $info = '';
1390             }
1391
1392             $info .= $this->output->container_start('actions');
1393
1394             $info .= html_writer::div(
1395                 html_writer::link('https://moodle.org/plugins/view.php?plugin='.$plugin->component,
1396                     get_string('misdepinfoplugin', 'core_plugin')),
1397                 'misdepinfoplugin'
1398             );
1399
1400             $info .= html_writer::div(
1401                 html_writer::link('https://moodle.org/plugins/pluginversion.php?id='.$plugin->version->id,
1402                     get_string('misdepinfoversion', 'core_plugin')),
1403                 'misdepinfoversion'
1404             );
1405
1406             $info .= html_writer::div(html_writer::link($plugin->version->downloadurl, get_string('download')), 'misdepdownload');
1407
1408             if ($pluginman->is_remote_plugin_installable($plugin->component, $plugin->version->version, $reason)) {
1409                 $info .= $this->output->single_button(
1410                     new moodle_url($this->page->url, array('installdep' => $plugin->component)),
1411                     get_string('dependencyinstall', 'core_plugin'),
1412                     'post',
1413                     array('class' => 'singlebutton dependencyinstall')
1414                 );
1415             } else {
1416                 $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1417                 if ($reasonhelp) {
1418                     $info .= html_writer::div($reasonhelp, 'reasonhelp dependencyinstall');
1419                 }
1420             }
1421
1422             $info .= $this->output->container_end(); // End of .actions container.
1423
1424             $table->data[] = array(
1425                 html_writer::div($plugin->name, 'name').' '.html_writer::div($plugin->component, 'component'),
1426                 $plugin->version->release,
1427                 $plugin->version->version,
1428                 implode(' ', $supportedmoodles),
1429                 $info
1430             );
1431         }
1432
1433         return html_writer::table($table);
1434     }
1435
1436     /**
1437      * Explain why {@link core_plugin_manager::is_remote_plugin_installable()} returned false.
1438      *
1439      * @param string $reason the reason code as returned by the plugin manager
1440      * @return string
1441      */
1442     protected function info_remote_plugin_not_installable($reason) {
1443
1444         if ($reason === 'notwritableplugintype' or $reason === 'notwritableplugin') {
1445             return $this->output->help_icon('notwritable', 'core_plugin', get_string('notwritable', 'core_plugin'));
1446         }
1447
1448         if ($reason === 'remoteunavailable') {
1449             return $this->output->help_icon('notdownloadable', 'core_plugin', get_string('notdownloadable', 'core_plugin'));
1450         }
1451
1452         return false;
1453     }
1454
1455     /**
1456      * Formats the information that needs to go in the 'Requires' column.
1457      * @param \core\plugininfo\base $plugin the plugin we are rendering the row for.
1458      * @param core_plugin_manager $pluginman provides data on all the plugins.
1459      * @param string $version
1460      * @param int $branch the current Moodle branch
1461      * @return string HTML code
1462      */
1463     protected function required_column(\core\plugininfo\base $plugin, core_plugin_manager $pluginman, $version, $branch = null) {
1464
1465         $requires = array();
1466         $displayuploadlink = false;
1467         $displayupdateslink = false;
1468
1469         $requirements = $pluginman->resolve_requirements($plugin, $version, $branch);
1470         foreach ($requirements as $reqname => $reqinfo) {
1471             if ($reqname === 'core') {
1472                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1473                     $class = 'requires-ok';
1474                     $label = '';
1475                 } else {
1476                     $class = 'requires-failed';
1477                     $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'badge badge-danger');
1478                 }
1479
1480                 if ($branch != null && !$plugin->is_core_compatible_satisfied($branch)) {
1481                     $requires[] = html_writer::tag('li',
1482                     html_writer::span(get_string('incompatibleversion', 'core_plugin', $branch), 'dep dep-core').
1483                     ' '.$label, array('class' => $class));
1484
1485                 } else if ($branch != null && $plugin->pluginsupported != null) {
1486                     $requires[] = html_writer::tag('li',
1487                         html_writer::span(get_string('moodlebranch', 'core_plugin',
1488                         array('min' => $plugin->pluginsupported[0], 'max' => $plugin->pluginsupported[1])), 'dep dep-core').
1489                         ' '.$label, array('class' => $class));
1490
1491                 } else if ($reqinfo->reqver != ANY_VERSION) {
1492                     $requires[] = html_writer::tag('li',
1493                         html_writer::span(get_string('moodleversion', 'core_plugin', $plugin->versionrequires), 'dep dep-core').
1494                         ' '.$label, array('class' => $class));
1495                 }
1496
1497             } else {
1498                 $actions = array();
1499
1500                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1501                     $label = '';
1502                     $class = 'requires-ok';
1503
1504                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_MISSING) {
1505                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1506                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'badge badge-warning');
1507                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'badge badge-warning');
1508                         $class = 'requires-failed requires-missing requires-available';
1509                         $actions[] = html_writer::link(
1510                             new moodle_url('https://moodle.org/plugins/view.php', array('plugin' => $reqname)),
1511                             get_string('misdepinfoplugin', 'core_plugin')
1512                         );
1513
1514                     } else {
1515                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'badge badge-danger');
1516                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1517                             'badge badge-danger');
1518                         $class = 'requires-failed requires-missing requires-unavailable';
1519                     }
1520                     $displayuploadlink = true;
1521
1522                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OUTDATED) {
1523                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1524                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'badge badge-warning');
1525                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'badge badge-warning');
1526                         $class = 'requires-failed requires-outdated requires-available';
1527                         $displayupdateslink = true;
1528
1529                     } else {
1530                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'badge badge-danger');
1531                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1532                             'badge badge-danger');
1533                         $class = 'requires-failed requires-outdated requires-unavailable';
1534                     }
1535                     $displayuploadlink = true;
1536                 }
1537
1538                 if ($reqinfo->reqver != ANY_VERSION) {
1539                     $str = 'otherpluginversion';
1540                 } else {
1541                     $str = 'otherplugin';
1542                 }
1543
1544                 $requires[] = html_writer::tag('li', html_writer::span(
1545                     get_string($str, 'core_plugin', array('component' => $reqname, 'version' => $reqinfo->reqver)),
1546                     'dep dep-plugin').' '.$label.' '.html_writer::span(implode(' | ', $actions), 'actions'),
1547                     array('class' => $class)
1548                 );
1549             }
1550         }
1551
1552         if (!$requires) {
1553             return '';
1554         }
1555
1556         $out = html_writer::tag('ul', implode("\n", $requires));
1557
1558         if ($displayuploadlink) {
1559             $out .= html_writer::div(
1560                 html_writer::link(
1561                     new moodle_url('/admin/tool/installaddon/'),
1562                     get_string('dependencyuploadmissing', 'core_plugin')
1563                 ),
1564                 'dependencyuploadmissing'
1565             );
1566         }
1567
1568         if ($displayupdateslink) {
1569             $out .= html_writer::div(
1570                 html_writer::link(
1571                     new moodle_url($this->page->url, array('sesskey' => sesskey(), 'fetchupdates' => 1)),
1572                     get_string('checkforupdates', 'core_plugin')
1573                 ),
1574                 'checkforupdates'
1575             );
1576         }
1577
1578         // Check if supports is present, and $branch is not in, only if $incompatible check was ok.
1579         if ($plugin->pluginsupported != null && $class == 'requires-ok' && $branch != null) {
1580             if ($pluginman->check_explicitly_supported($plugin, $branch) == $pluginman::VERSION_NOT_SUPPORTED) {
1581                 $out .= html_writer::div(get_string('notsupported', 'core_plugin', $branch));
1582             }
1583         }
1584
1585         return $out;
1586
1587     }
1588
1589     /**
1590      * Prints an overview about the plugins - number of installed, number of extensions etc.
1591      *
1592      * @param core_plugin_manager $pluginman provides information about the plugins
1593      * @param array $options filtering options
1594      * @return string as usually
1595      */
1596     public function plugins_overview_panel(core_plugin_manager $pluginman, array $options = array()) {
1597
1598         $plugininfo = $pluginman->get_plugins();
1599
1600         $numtotal = $numextension = $numupdatable = 0;
1601
1602         foreach ($plugininfo as $type => $plugins) {
1603             foreach ($plugins as $name => $plugin) {
1604                 if ($plugin->available_updates()) {
1605                     $numupdatable++;
1606                 }
1607                 if ($plugin->get_status() === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1608                     continue;
1609                 }
1610                 $numtotal++;
1611                 if (!$plugin->is_standard()) {
1612                     $numextension++;
1613                 }
1614             }
1615         }
1616
1617         $infoall = html_writer::link(
1618             new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 0)),
1619             get_string('overviewall', 'core_plugin'),
1620             array('title' => get_string('filterall', 'core_plugin'))
1621         ).' '.html_writer::span($numtotal, 'badge number number-all');
1622
1623         $infoext = html_writer::link(
1624             new moodle_url($this->page->url, array('contribonly' => 1, 'updatesonly' => 0)),
1625             get_string('overviewext', 'core_plugin'),
1626             array('title' => get_string('filtercontribonly', 'core_plugin'))
1627         ).' '.html_writer::span($numextension, 'badge number number-additional');
1628
1629         if ($numupdatable) {
1630             $infoupdatable = html_writer::link(
1631                 new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 1)),
1632                 get_string('overviewupdatable', 'core_plugin'),
1633                 array('title' => get_string('filterupdatesonly', 'core_plugin'))
1634             ).' '.html_writer::span($numupdatable, 'badge badge-info number number-updatable');
1635         } else {
1636             // No updates, or the notifications disabled.
1637             $infoupdatable = '';
1638         }
1639
1640         $out = html_writer::start_div('', array('id' => 'plugins-overview-panel'));
1641
1642         if (!empty($options['updatesonly'])) {
1643             $out .= $this->output->heading(get_string('overviewupdatable', 'core_plugin'), 3);
1644         } else if (!empty($options['contribonly'])) {
1645             $out .= $this->output->heading(get_string('overviewext', 'core_plugin'), 3);
1646         }
1647
1648         if ($numupdatable) {
1649             $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1650             if ($installableupdates) {
1651                 $out .= $this->output->single_button(
1652                     new moodle_url($this->page->url, array('installupdatex' => 1)),
1653                     get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1654                     'post',
1655                     array('class' => 'singlebutton updateavailableinstallall')
1656                 );
1657             }
1658         }
1659
1660         $out .= html_writer::div($infoall, 'info info-all').
1661             html_writer::div($infoext, 'info info-ext').
1662             html_writer::div($infoupdatable, 'info info-updatable');
1663
1664         $out .= html_writer::end_div(); // End of #plugins-overview-panel block.
1665
1666         return $out;
1667     }
1668
1669     /**
1670      * Displays all known plugins and links to manage them
1671      *
1672      * This default implementation renders all plugins into one big table.
1673      *
1674      * @param core_plugin_manager $pluginman provides information about the plugins.
1675      * @param array $options filtering options
1676      * @return string HTML code
1677      */
1678     public function plugins_control_panel(core_plugin_manager $pluginman, array $options = array()) {
1679
1680         $plugininfo = $pluginman->get_plugins();
1681
1682         // Filter the list of plugins according the options.
1683         if (!empty($options['updatesonly'])) {
1684             $updateable = array();
1685             foreach ($plugininfo as $plugintype => $pluginnames) {
1686                 foreach ($pluginnames as $pluginname => $pluginfo) {
1687                     $pluginavailableupdates = $pluginfo->available_updates();
1688                     if (!empty($pluginavailableupdates)) {
1689                         foreach ($pluginavailableupdates as $pluginavailableupdate) {
1690                             $updateable[$plugintype][$pluginname] = $pluginfo;
1691                         }
1692                     }
1693                 }
1694             }
1695             $plugininfo = $updateable;
1696         }
1697
1698         if (!empty($options['contribonly'])) {
1699             $contribs = array();
1700             foreach ($plugininfo as $plugintype => $pluginnames) {
1701                 foreach ($pluginnames as $pluginname => $pluginfo) {
1702                     if (!$pluginfo->is_standard()) {
1703                         $contribs[$plugintype][$pluginname] = $pluginfo;
1704                     }
1705                 }
1706             }
1707             $plugininfo = $contribs;
1708         }
1709
1710         if (empty($plugininfo)) {
1711             return '';
1712         }
1713
1714         $table = new html_table();
1715         $table->id = 'plugins-control-panel';
1716         $table->head = array(
1717             get_string('displayname', 'core_plugin'),
1718             get_string('version', 'core_plugin'),
1719             get_string('availability', 'core_plugin'),
1720             get_string('actions', 'core_plugin'),
1721             get_string('notes','core_plugin'),
1722         );
1723         $table->headspan = array(1, 1, 1, 2, 1);
1724         $table->colclasses = array(
1725             'pluginname', 'version', 'availability', 'settings', 'uninstall', 'notes'
1726         );
1727
1728         foreach ($plugininfo as $type => $plugins) {
1729             $heading = $pluginman->plugintype_name_plural($type);
1730             $pluginclass = core_plugin_manager::resolve_plugininfo_class($type);
1731             if ($manageurl = $pluginclass::get_manage_url()) {
1732                 $heading .= $this->output->action_icon($manageurl, new pix_icon('i/settings',
1733                     get_string('settings', 'core_plugin')));
1734             }
1735             $header = new html_table_cell(html_writer::tag('span', $heading, array('id'=>'plugin_type_cell_'.$type)));
1736             $header->header = true;
1737             $header->colspan = array_sum($table->headspan);
1738             $header = new html_table_row(array($header));
1739             $header->attributes['class'] = 'plugintypeheader type-' . $type;
1740             $table->data[] = $header;
1741
1742             if (empty($plugins)) {
1743                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
1744                 $msg->colspan = array_sum($table->headspan);
1745                 $row = new html_table_row(array($msg));
1746                 $row->attributes['class'] .= 'msg msg-noneinstalled';
1747                 $table->data[] = $row;
1748                 continue;
1749             }
1750
1751             foreach ($plugins as $name => $plugin) {
1752                 $row = new html_table_row();
1753                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
1754
1755                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name, null)) {
1756                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'icon pluginicon'));
1757                 } else {
1758                     $icon = $this->output->spacer();
1759                 }
1760                 $status = $plugin->get_status();
1761                 $row->attributes['class'] .= ' status-'.$status;
1762                 $pluginname  = html_writer::tag('div', $icon.$plugin->displayname, array('class' => 'displayname')).
1763                                html_writer::tag('div', $plugin->component, array('class' => 'componentname'));
1764                 $pluginname  = new html_table_cell($pluginname);
1765
1766                 $version = html_writer::div($plugin->versiondb, 'versionnumber');
1767                 if ((string)$plugin->release !== '') {
1768                     $version = html_writer::div($plugin->release, 'release').$version;
1769                 }
1770                 $version = new html_table_cell($version);
1771
1772                 $isenabled = $plugin->is_enabled();
1773                 if (is_null($isenabled)) {
1774                     $availability = new html_table_cell('');
1775                 } else if ($isenabled) {
1776                     $row->attributes['class'] .= ' enabled';
1777                     $availability = new html_table_cell(get_string('pluginenabled', 'core_plugin'));
1778                 } else {
1779                     $row->attributes['class'] .= ' disabled';
1780                     $availability = new html_table_cell(get_string('plugindisabled', 'core_plugin'));
1781                 }
1782
1783                 $settingsurl = $plugin->get_settings_url();
1784                 if (!is_null($settingsurl)) {
1785                     $settings = html_writer::link($settingsurl, get_string('settings', 'core_plugin'), array('class' => 'settings'));
1786                 } else {
1787                     $settings = '';
1788                 }
1789                 $settings = new html_table_cell($settings);
1790
1791                 if ($uninstallurl = $pluginman->get_uninstall_url($plugin->component, 'overview')) {
1792                     $uninstall = html_writer::link($uninstallurl, get_string('uninstall', 'core_plugin'));
1793                 } else {
1794                     $uninstall = '';
1795                 }
1796                 $uninstall = new html_table_cell($uninstall);
1797
1798                 if ($plugin->is_standard()) {
1799                     $row->attributes['class'] .= ' standard';
1800                     $source = '';
1801                 } else {
1802                     $row->attributes['class'] .= ' extension';
1803                     $source = html_writer::div(get_string('sourceext', 'core_plugin'), 'source badge badge-info');
1804                 }
1805
1806                 if ($status === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1807                     $msg = html_writer::div(get_string('status_missing', 'core_plugin'), 'statusmsg badge badge-danger');
1808                 } else if ($status === core_plugin_manager::PLUGIN_STATUS_NEW) {
1809                     $msg = html_writer::div(get_string('status_new', 'core_plugin'), 'statusmsg badge badge-success');
1810                 } else {
1811                     $msg = '';
1812                 }
1813
1814                 $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1815                 if ($requriedby) {
1816                     $requiredby = html_writer::tag('div', get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1817                         array('class' => 'requiredby'));
1818                 } else {
1819                     $requiredby = '';
1820                 }
1821
1822                 $updateinfo = '';
1823                 if (is_array($plugin->available_updates())) {
1824                     foreach ($plugin->available_updates() as $availableupdate) {
1825                         $updateinfo .= $this->plugin_available_update_info($pluginman, $availableupdate);
1826                     }
1827                 }
1828
1829                 $notes = new html_table_cell($source.$msg.$requiredby.$updateinfo);
1830
1831                 $row->cells = array(
1832                     $pluginname, $version, $availability, $settings, $uninstall, $notes
1833                 );
1834                 $table->data[] = $row;
1835             }
1836         }
1837
1838         return html_writer::table($table);
1839     }
1840
1841     /**
1842      * Helper method to render the information about the available plugin update
1843      *
1844      * @param core_plugin_manager $pluginman plugin manager instance
1845      * @param \core\update\info $updateinfo information about the available update for the plugin
1846      */
1847     protected function plugin_available_update_info(core_plugin_manager $pluginman, \core\update\info $updateinfo) {
1848
1849         $boxclasses = 'pluginupdateinfo';
1850         $info = array();
1851
1852         if (isset($updateinfo->release)) {
1853             $info[] = html_writer::div(
1854                 get_string('updateavailable_release', 'core_plugin', $updateinfo->release),
1855                 'info release'
1856             );
1857         }
1858
1859         if (isset($updateinfo->maturity)) {
1860             $info[] = html_writer::div(
1861                 get_string('maturity'.$updateinfo->maturity, 'core_admin'),
1862                 'info maturity'
1863             );
1864             $boxclasses .= ' maturity'.$updateinfo->maturity;
1865         }
1866
1867         if (isset($updateinfo->download)) {
1868             $info[] = html_writer::div(
1869                 html_writer::link($updateinfo->download, get_string('download')),
1870                 'info download'
1871             );
1872         }
1873
1874         if (isset($updateinfo->url)) {
1875             $info[] = html_writer::div(
1876                 html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin')),
1877                 'info more'
1878             );
1879         }
1880
1881         $box = html_writer::start_div($boxclasses);
1882         $box .= html_writer::div(
1883             get_string('updateavailable', 'core_plugin', $updateinfo->version),
1884             'version'
1885         );
1886         $box .= html_writer::div(
1887             implode(html_writer::span(' ', 'separator'), $info),
1888             'infos'
1889         );
1890
1891         if ($pluginman->is_remote_plugin_installable($updateinfo->component, $updateinfo->version, $reason)) {
1892             $box .= $this->output->single_button(
1893                 new moodle_url($this->page->url, array('installupdate' => $updateinfo->component,
1894                     'installupdateversion' => $updateinfo->version)),
1895                 get_string('updateavailableinstall', 'core_admin'),
1896                 'post',
1897                 array('class' => 'singlebutton updateavailableinstall')
1898             );
1899         } else {
1900             $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1901             if ($reasonhelp) {
1902                 $box .= html_writer::div($reasonhelp, 'reasonhelp updateavailableinstall');
1903             }
1904         }
1905         $box .= html_writer::end_div();
1906
1907         return $box;
1908     }
1909
1910     /**
1911      * This function will render one beautiful table with all the environmental
1912      * configuration and how it suits Moodle needs.
1913      *
1914      * @param boolean $result final result of the check (true/false)
1915      * @param environment_results[] $environment_results array of results gathered
1916      * @return string HTML to output.
1917      */
1918     public function environment_check_table($result, $environment_results) {
1919         global $CFG;
1920
1921         // Table headers
1922         $servertable = new html_table();//table for server checks
1923         $servertable->head  = array(
1924             get_string('name'),
1925             get_string('info'),
1926             get_string('report'),
1927             get_string('plugin'),
1928             get_string('status'),
1929         );
1930         $servertable->colclasses = array('centeralign name', 'centeralign info', 'leftalign report', 'leftalign plugin', 'centeralign status');
1931         $servertable->attributes['class'] = 'admintable environmenttable generaltable table-sm';
1932         $servertable->id = 'serverstatus';
1933
1934         $serverdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1935
1936         $othertable = new html_table();//table for custom checks
1937         $othertable->head  = array(
1938             get_string('info'),
1939             get_string('report'),
1940             get_string('plugin'),
1941             get_string('status'),
1942         );
1943         $othertable->colclasses = array('aligncenter info', 'alignleft report', 'alignleft plugin', 'aligncenter status');
1944         $othertable->attributes['class'] = 'admintable environmenttable generaltable table-sm';
1945         $othertable->id = 'otherserverstatus';
1946
1947         $otherdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1948
1949         // Iterate over each environment_result
1950         $continue = true;
1951         foreach ($environment_results as $environment_result) {
1952             $errorline   = false;
1953             $warningline = false;
1954             $stringtouse = '';
1955             if ($continue) {
1956                 $type = $environment_result->getPart();
1957                 $info = $environment_result->getInfo();
1958                 $status = $environment_result->getStatus();
1959                 $plugin = $environment_result->getPluginName();
1960                 $error_code = $environment_result->getErrorCode();
1961                 // Process Report field
1962                 $rec = new stdClass();
1963                 // Something has gone wrong at parsing time
1964                 if ($error_code) {
1965                     $stringtouse = 'environmentxmlerror';
1966                     $rec->error_code = $error_code;
1967                     $status = get_string('error');
1968                     $errorline = true;
1969                     $continue = false;
1970                 }
1971
1972                 if ($continue) {
1973                     if ($rec->needed = $environment_result->getNeededVersion()) {
1974                         // We are comparing versions
1975                         $rec->current = $environment_result->getCurrentVersion();
1976                         if ($environment_result->getLevel() == 'required') {
1977                             $stringtouse = 'environmentrequireversion';
1978                         } else {
1979                             $stringtouse = 'environmentrecommendversion';
1980                         }
1981
1982                     } else if ($environment_result->getPart() == 'custom_check') {
1983                         // We are checking installed & enabled things
1984                         if ($environment_result->getLevel() == 'required') {
1985                             $stringtouse = 'environmentrequirecustomcheck';
1986                         } else {
1987                             $stringtouse = 'environmentrecommendcustomcheck';
1988                         }
1989
1990                     } else if ($environment_result->getPart() == 'php_setting') {
1991                         if ($status) {
1992                             $stringtouse = 'environmentsettingok';
1993                         } else if ($environment_result->getLevel() == 'required') {
1994                             $stringtouse = 'environmentmustfixsetting';
1995                         } else {
1996                             $stringtouse = 'environmentshouldfixsetting';
1997                         }
1998
1999                     } else {
2000                         if ($environment_result->getLevel() == 'required') {
2001                             $stringtouse = 'environmentrequireinstall';
2002                         } else {
2003                             $stringtouse = 'environmentrecommendinstall';
2004                         }
2005                     }
2006
2007                     // Calculate the status value
2008                     if ($environment_result->getBypassStr() != '') {            //Handle bypassed result (warning)
2009                         $status = get_string('bypassed');
2010                         $warningline = true;
2011                     } else if ($environment_result->getRestrictStr() != '') {   //Handle restricted result (error)
2012                         $status = get_string('restricted');
2013                         $errorline = true;
2014                     } else {
2015                         if ($status) {                                          //Handle ok result (ok)
2016                             $status = get_string('ok');
2017                         } else {
2018                             if ($environment_result->getLevel() == 'optional') {//Handle check result (warning)
2019                                 $status = get_string('check');
2020                                 $warningline = true;
2021                             } else {                                            //Handle error result (error)
2022                                 $status = get_string('check');
2023                                 $errorline = true;
2024                             }
2025                         }
2026                     }
2027                 }
2028
2029                 // Build the text
2030                 $linkparts = array();
2031                 $linkparts[] = 'admin/environment';
2032                 $linkparts[] = $type;
2033                 if (!empty($info)){
2034                    $linkparts[] = $info;
2035                 }
2036                 // Plugin environments do not have docs pages yet.
2037                 if (empty($CFG->docroot) or $environment_result->plugin) {
2038                     $report = get_string($stringtouse, 'admin', $rec);
2039                 } else {
2040                     $report = $this->doc_link(join('/', $linkparts), get_string($stringtouse, 'admin', $rec), true);
2041                 }
2042                 // Enclose report text in div so feedback text will be displayed underneath it.
2043                 $report = html_writer::div($report);
2044
2045                 // Format error or warning line
2046                 if ($errorline) {
2047                     $messagetype = 'error';
2048                     $statusclass = 'badge-danger';
2049                 } else if ($warningline) {
2050                     $messagetype = 'warn';
2051                     $statusclass = 'badge-warning';
2052                 } else {
2053                     $messagetype = 'ok';
2054                     $statusclass = 'badge-success';
2055                 }
2056                 $status = html_writer::span($status, 'badge ' . $statusclass);
2057                 // Here we'll store all the feedback found
2058                 $feedbacktext = '';
2059                 // Append the feedback if there is some
2060                 $feedbacktext .= $environment_result->strToReport($environment_result->getFeedbackStr(), $messagetype);
2061                 //Append the bypass if there is some
2062                 $feedbacktext .= $environment_result->strToReport($environment_result->getBypassStr(), 'warn');
2063                 //Append the restrict if there is some
2064                 $feedbacktext .= $environment_result->strToReport($environment_result->getRestrictStr(), 'error');
2065
2066                 $report .= $feedbacktext;
2067
2068                 // Add the row to the table
2069                 if ($environment_result->getPart() == 'custom_check'){
2070                     $otherdata[$messagetype][] = array ($info, $report, $plugin, $status);
2071                 } else {
2072                     $serverdata[$messagetype][] = array ($type, $info, $report, $plugin, $status);
2073                 }
2074             }
2075         }
2076
2077         //put errors first in
2078         $servertable->data = array_merge($serverdata['error'], $serverdata['warn'], $serverdata['ok']);
2079         $othertable->data = array_merge($otherdata['error'], $otherdata['warn'], $otherdata['ok']);
2080
2081         // Print table
2082         $output = '';
2083         $output .= $this->heading(get_string('serverchecks', 'admin'));
2084         $output .= html_writer::table($servertable);
2085         if (count($othertable->data)){
2086             $output .= $this->heading(get_string('customcheck', 'admin'));
2087             $output .= html_writer::table($othertable);
2088         }
2089
2090         // Finally, if any error has happened, print the summary box
2091         if (!$result) {
2092             $output .= $this->box(get_string('environmenterrortodo', 'admin'), 'environmentbox errorbox');
2093         }
2094
2095         return $output;
2096     }
2097
2098     /**
2099      * Render a simple page for providing the upgrade key.
2100      *
2101      * @param moodle_url|string $url
2102      * @return string
2103      */
2104     public function upgradekey_form_page($url) {
2105
2106         $output = '';
2107         $output .= $this->header();
2108         $output .= $this->container_start('upgradekeyreq');
2109         $output .= $this->heading(get_string('upgradekeyreq', 'core_admin'));
2110         $output .= html_writer::start_tag('form', array('method' => 'POST', 'action' => $url));
2111         $output .= html_writer::empty_tag('input', array('name' => 'upgradekey', 'type' => 'password'));
2112         $output .= html_writer::empty_tag('input', array('value' => get_string('submit'), 'type' => 'submit'));
2113         $output .= html_writer::end_tag('form');
2114         $output .= $this->container_end();
2115         $output .= $this->footer();
2116
2117         return $output;
2118     }
2119
2120     /**
2121      * Check to see if writing to the deprecated legacy log store is enabled.
2122      *
2123      * @return string An error message if writing to the legacy log store is enabled.
2124      */
2125     protected function legacy_log_store_writing_error() {
2126         $enabled = get_config('logstore_legacy', 'loglegacy');
2127         $plugins = explode(',', get_config('tool_log', 'enabled_stores'));
2128         $enabled = $enabled && in_array('logstore_legacy', $plugins);
2129
2130         if ($enabled) {
2131             return $this->warning(get_string('legacylogginginuse'));
2132         }
2133     }
2134
2135     /**
2136      * Display message about the benefits of registering on Moodle.org
2137      *
2138      * @return string
2139      */
2140     public function moodleorg_registration_message() {
2141
2142         $out = format_text(get_string('registerwithmoodleorginfo', 'core_hub'), FORMAT_MARKDOWN);
2143
2144         $out .= html_writer::link(
2145             new moodle_url('/admin/settings.php', ['section' => 'moodleservices']),
2146             $this->output->pix_icon('i/info', '').' '.get_string('registerwithmoodleorginfoapp', 'core_hub'),
2147             ['class' => 'btn btn-link', 'role' => 'opener', 'target' => '_href']
2148         );
2149
2150         $out .= html_writer::link(
2151             HUB_MOODLEORGHUBURL,
2152             $this->output->pix_icon('i/stats', '').' '.get_string('registerwithmoodleorginfostats', 'core_hub'),
2153             ['class' => 'btn btn-link', 'role' => 'opener', 'target' => '_href']
2154         );
2155
2156         $out .= html_writer::link(
2157             HUB_MOODLEORGHUBURL.'/sites',
2158             $this->output->pix_icon('i/location', '').' '.get_string('registerwithmoodleorginfosites', 'core_hub'),
2159             ['class' => 'btn btn-link', 'role' => 'opener', 'target' => '_href']
2160         );
2161
2162         return $this->output->box($out);
2163     }
2164 }