admin/renderer.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Renderer for core_admin subsystem
  19  *
  20  * @package    core
  21  * @subpackage admin
  22  * @copyright  2011 David Mudrak <david@moodle.com>
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28
  29 /**
  30  * Standard HTML output renderer for core_admin subsystem
  31  */
  32 class core_admin_renderer extends plugin_renderer_base {
  33
  34     /**
  35      * Display the 'Do you acknowledge the terms of the GPL' page. The first page
  36      * during install.
  37      * @return string HTML to output.
  38      */
  39     public function install_licence_page() {
  40         global $CFG;
  41         $output = '';
  42
  43         $copyrightnotice = text_to_html(get_string('gpl3'));
  44         $copyrightnotice = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $copyrightnotice); // extremely ugly validation hack
  45
  46         $continue = new single_button(new moodle_url($this->page->url, array(
  47             'lang' => $CFG->lang, 'agreelicense' => 1)), get_string('continue'), 'get');
  48
  49         $output .= $this->header();
  50         $output .= $this->heading('<a href="http://moodle.org">Moodle</a> - Modular Object-Oriented Dynamic Learning Environment');
  51         $output .= $this->heading(get_string('copyrightnotice'));
  52         $output .= $this->box($copyrightnotice, 'copyrightnotice');
  53         $output .= html_writer::empty_tag('br');
  54         $output .= $this->confirm(get_string('doyouagree'), $continue, "http://docs.moodle.org/dev/License");
  55         $output .= $this->footer();
  56
  57         return $output;
  58     }
  59
  60     /**
  61      * Display page explaining proper upgrade process,
  62      * there can not be any PHP file leftovers...
  63      *
  64      * @return string HTML to output.
  65      */
  66     public function upgrade_stale_php_files_page() {
  67         $output = '';
  68         $output .= $this->header();
  69         $output .= $this->heading(get_string('upgradestalefiles', 'admin'));
  70         $output .= $this->box_start('generalbox', 'notice');
  71         $output .= format_text(get_string('upgradestalefilesinfo', 'admin', get_docs_url('Upgrading')), FORMAT_MARKDOWN);
  72         $output .= html_writer::empty_tag('br');
  73         $output .= html_writer::tag('div', $this->single_button($this->page->url, get_string('reload'), 'get'), array('class' => 'buttons'));
  74         $output .= $this->box_end();
  75         $output .= $this->footer();
  76
  77         return $output;
  78     }
  79
  80     /**
  81      * Display the 'environment check' page that is displayed during install.
  82      * @param int $maturity
  83      * @param boolean $envstatus final result of the check (true/false)
  84      * @param array $environment_results array of results gathered
  85      * @param string $release moodle release
  86      * @return string HTML to output.
  87      */
  88     public function install_environment_page($maturity, $envstatus, $environment_results, $release) {
  89         global $CFG;
  90         $output = '';
  91
  92         $output .= $this->header();
  93         $output .= $this->maturity_warning($maturity);
  94         $output .= $this->heading("Moodle $release");
  95         $output .= $this->release_notes_link();
  96
  97         $output .= $this->environment_check_table($envstatus, $environment_results);
  98
  99         if (!$envstatus) {
 100             $output .= $this->upgrade_reload(new moodle_url($this->page->url, array('agreelicense' => 1, 'lang' => $CFG->lang)));
 101         } else {
 102             $output .= $this->notification(get_string('environmentok', 'admin'), 'notifysuccess');
 103             $output .= $this->continue_button(new moodle_url($this->page->url, array(
 104                 'agreelicense' => 1, 'confirmrelease' => 1, 'lang' => $CFG->lang)));
 105         }
 106
 107         $output .= $this->footer();
 108         return $output;
 109     }
 110
 111     /**
 112      * Displays the list of plugins with unsatisfied dependencies
 113      *
 114      * @param double|string|int $version Moodle on-disk version
 115      * @param array $failed list of plugins with unsatisfied dependecies
 116      * @param moodle_url $reloadurl URL of the page to recheck the dependencies
 117      * @return string HTML
 118      */
 119     public function unsatisfied_dependencies_page($version, array $failed, moodle_url $reloadurl) {
 120         $output = '';
 121
 122         $output .= $this->header();
 123         $output .= $this->heading(get_string('pluginscheck', 'admin'));
 124         $output .= $this->warning(get_string('pluginscheckfailed', 'admin', array('pluginslist' => implode(', ', array_unique($failed)))));
 125         $output .= $this->plugins_check_table(core_plugin_manager::instance(), $version, array('xdep' => true));
 126         $output .= $this->warning(get_string('pluginschecktodo', 'admin'));
 127         $output .= $this->continue_button($reloadurl);
 128
 129         $output .= $this->footer();
 130
 131         return $output;
 132     }
 133
 134     /**
 135      * Display the 'You are about to upgrade Moodle' page. The first page
 136      * during upgrade.
 137      * @param string $strnewversion
 138      * @param int $maturity
 139      * @param string $testsite
 140      * @return string HTML to output.
 141      */
 142     public function upgrade_confirm_page($strnewversion, $maturity, $testsite) {
 143         $output = '';
 144
 145         $continueurl = new moodle_url($this->page->url, array('confirmupgrade' => 1, 'cache' => 0));
 146         $continue = new single_button($continueurl, get_string('continue'), 'get');
 147         $cancelurl = new moodle_url('/admin/index.php');
 148
 149         $output .= $this->header();
 150         $output .= $this->maturity_warning($maturity);
 151         $output .= $this->test_site_warning($testsite);
 152         $output .= $this->confirm(get_string('upgradesure', 'admin', $strnewversion), $continue, $cancelurl);
 153         $output .= $this->footer();
 154
 155         return $output;
 156     }
 157
 158     /**
 159      * Display the environment page during the upgrade process.
 160      * @param string $release
 161      * @param boolean $envstatus final result of env check (true/false)
 162      * @param array $environment_results array of results gathered
 163      * @return string HTML to output.
 164      */
 165     public function upgrade_environment_page($release, $envstatus, $environment_results) {
 166         global $CFG;
 167         $output = '';
 168
 169         $output .= $this->header();
 170         $output .= $this->heading("Moodle $release");
 171         $output .= $this->release_notes_link();
 172         $output .= $this->environment_check_table($envstatus, $environment_results);
 173
 174         if (!$envstatus) {
 175             $output .= $this->upgrade_reload(new moodle_url($this->page->url, array('confirmupgrade' => 1, 'cache' => 0)));
 176
 177         } else {
 178             $output .= $this->notification(get_string('environmentok', 'admin'), 'notifysuccess');
 179
 180             if (empty($CFG->skiplangupgrade) and current_language() !== 'en') {
 181                 $output .= $this->box(get_string('langpackwillbeupdated', 'admin'), 'generalbox', 'notice');
 182             }
 183
 184             $output .= $this->continue_button(new moodle_url($this->page->url, array(
 185                 'confirmupgrade' => 1, 'confirmrelease' => 1, 'cache' => 0)));
 186         }
 187
 188         $output .= $this->footer();
 189
 190         return $output;
 191     }
 192
 193     /**
 194      * Display the upgrade page that lists all the plugins that require attention.
 195      * @param core_plugin_manager $pluginman provides information about the plugins.
 196      * @param \core\update\checker $checker provides information about available updates.
 197      * @param int $version the version of the Moodle code from version.php.
 198      * @param bool $showallplugins
 199      * @param moodle_url $reloadurl
 200      * @param moodle_url $continueurl
 201      * @return string HTML to output.
 202      */
 203     public function upgrade_plugin_check_page(core_plugin_manager $pluginman, \core\update\checker $checker,
 204             $version, $showallplugins, $reloadurl, $continueurl) {
 205
 206         $output = '';
 207
 208         $output .= $this->header();
 209         $output .= $this->box_start('generalbox', 'plugins-check-page');
 210         $output .= html_writer::tag('p', get_string('pluginchecknotice', 'core_plugin'), array('class' => 'page-description'));
 211         $output .= $this->check_for_updates_button($checker, $reloadurl);
 212         $output .= $this->missing_dependencies($pluginman);
 213         $output .= $this->plugins_check_table($pluginman, $version, array('full' => $showallplugins));
 214         $output .= $this->box_end();
 215         $output .= $this->upgrade_reload($reloadurl);
 216
 217         if ($pluginman->some_plugins_updatable()) {
 218             $output .= $this->container_start('upgradepluginsinfo');
 219             $output .= $this->help_icon('upgradepluginsinfo', 'core_admin', get_string('upgradepluginsfirst', 'core_admin'));
 220             $output .= $this->container_end();
 221         }
 222
 223         $button = new single_button($continueurl, get_string('upgradestart', 'admin'), 'get');
 224         $button->class = 'continuebutton';
 225         $output .= $this->render($button);
 226         $output .= $this->footer();
 227
 228         return $output;
 229     }
 230
 231     /**
 232      * Display a page to confirm plugin installation cancelation.
 233      *
 234      * @param array $abortable list of \core\update\plugininfo
 235      * @param moodle_url $continue
 236      * @return string
 237      */
 238     public function upgrade_confirm_abort_install_page(array $abortable, moodle_url $continue) {
 239
 240         $pluginman = core_plugin_manager::instance();
 241
 242         if (empty($abortable)) {
 243             // The UI should not allow this.
 244             throw new moodle_exception('err_no_plugin_install_abortable', 'core_plugin');
 245         }
 246
 247         $out = $this->output->header();
 248         $out .= $this->output->heading(get_string('cancelinstallhead', 'core_plugin'), 3);
 249         $out .= $this->output->container(get_string('cancelinstallinfo', 'core_plugin'), 'cancelinstallinfo');
 250
 251         foreach ($abortable as $pluginfo) {
 252             $out .= $this->output->heading($pluginfo->displayname.' ('.$pluginfo->component.')', 4);
 253             $out .= $this->output->container(get_string('cancelinstallinfodir', 'core_plugin', $pluginfo->rootdir));
 254             if ($repotype = $pluginman->plugin_external_source($pluginfo->component)) {
 255                 $out .= $this->output->container(get_string('uninstalldeleteconfirmexternal', 'core_plugin', $repotype),
 256                     'uninstalldeleteconfirmexternal');
 257             }
 258         }
 259
 260         $out .= $this->plugins_management_confirm_buttons($continue, $this->page->url);
 261         $out .= $this->output->footer();
 262
 263         return $out;
 264     }
 265
 266     /**
 267      * Display the admin notifications page.
 268      * @param int $maturity
 269      * @param bool $insecuredataroot warn dataroot is invalid
 270      * @param bool $errorsdisplayed warn invalid dispaly error setting
 271      * @param bool $cronoverdue warn cron not running
 272      * @param bool $dbproblems warn db has problems
 273      * @param bool $maintenancemode warn in maintenance mode
 274      * @param bool $buggyiconvnomb warn iconv problems
 275      * @param array|null $availableupdates array of \core\update\info objects or null
 276      * @param int|null $availableupdatesfetch timestamp of the most recent updates fetch or null (unknown)
 277      * @param string[] $cachewarnings An array containing warnings from the Cache API.
 278      * @param array $eventshandlers Events 1 API handlers.
 279      *
 280      * @return string HTML to output.
 281      */
 282     public function admin_notifications_page($maturity, $insecuredataroot, $errorsdisplayed,
 283             $cronoverdue, $dbproblems, $maintenancemode, $availableupdates, $availableupdatesfetch,
 284             $buggyiconvnomb, $registered, array $cachewarnings = array(), $eventshandlers = 0, $themedesignermode = false) {
 285         global $CFG;
 286         $output = '';
 287
 288         $output .= $this->header();
 289         $output .= $this->maturity_info($maturity);
 290         $output .= $this->legacy_log_store_writing_error();
 291         $output .= empty($CFG->disableupdatenotifications) ? $this->available_updates($availableupdates, $availableupdatesfetch) : '';
 292         $output .= $this->insecure_dataroot_warning($insecuredataroot);
 293         $output .= $this->themedesignermode_warning($themedesignermode);
 294         $output .= $this->display_errors_warning($errorsdisplayed);
 295         $output .= $this->buggy_iconv_warning($buggyiconvnomb);
 296         $output .= $this->cron_overdue_warning($cronoverdue);
 297         $output .= $this->db_problems($dbproblems);
 298         $output .= $this->maintenance_mode_warning($maintenancemode);
 299         $output .= $this->cache_warnings($cachewarnings);
 300         $output .= $this->events_handlers($eventshandlers);
 301         $output .= $this->registration_warning($registered);
 302
 303         //////////////////////////////////////////////////////////////////////////////////////////////////
 304         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 305         $output .= $this->moodle_copyright();
 306         //////////////////////////////////////////////////////////////////////////////////////////////////
 307
 308         $output .= $this->footer();
 309
 310         return $output;
 311     }
 312
 313     /**
 314      * Display the plugin management page (admin/plugins.php).
 315      *
 316      * The filtering options array may contain following items:
 317      *  bool contribonly - show only contributed extensions
 318      *  bool updatesonly - show only plugins with an available update
 319      *
 320      * @param core_plugin_manager $pluginman
 321      * @param \core\update\checker $checker
 322      * @param array $options filtering options
 323      * @return string HTML to output.
 324      */
 325     public function plugin_management_page(core_plugin_manager $pluginman, \core\update\checker $checker, array $options = array()) {
 326
 327         $output = '';
 328
 329         $output .= $this->header();
 330         $output .= $this->heading(get_string('pluginsoverview', 'core_admin'));
 331         $output .= $this->check_for_updates_button($checker, $this->page->url);
 332         $output .= $this->plugins_overview_panel($pluginman, $options);
 333         $output .= $this->plugins_control_panel($pluginman, $options);
 334         $output .= $this->footer();
 335
 336         return $output;
 337     }
 338
 339     /**
 340      * Renders a button to fetch for available updates.
 341      *
 342      * @param \core\update\checker $checker
 343      * @param moodle_url $reloadurl
 344      * @return string HTML
 345      */
 346     public function check_for_updates_button(\core\update\checker $checker, $reloadurl) {
 347
 348         $output = '';
 349
 350         if ($checker->enabled()) {
 351             $output .= $this->container_start('checkforupdates');
 352             $output .= $this->single_button(
 353                 new moodle_url($reloadurl, array('fetchupdates' => 1)),
 354                 get_string('checkforupdates', 'core_plugin')
 355             );
 356             if ($timefetched = $checker->get_last_timefetched()) {
 357                 $timefetched = userdate($timefetched, get_string('strftimedatetime', 'core_langconfig'));
 358                 $output .= $this->container(get_string('checkforupdateslast', 'core_plugin', $timefetched), 'lasttimefetched');
 359             }
 360             $output .= $this->container_end();
 361         }
 362
 363         return $output;
 364     }
 365
 366     /**
 367      * Display a page to confirm the plugin uninstallation.
 368      *
 369      * @param core_plugin_manager $pluginman
 370      * @param \core\plugininfo\base $pluginfo
 371      * @param moodle_url $continueurl URL to continue after confirmation
 372      * @param moodle_url $cancelurl URL to to go if cancelled
 373      * @return string
 374      */
 375     public function plugin_uninstall_confirm_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo, moodle_url $continueurl, moodle_url $cancelurl) {
 376         $output = '';
 377
 378         $pluginname = $pluginman->plugin_name($pluginfo->component);
 379
 380         $confirm = '<p>' . get_string('uninstallconfirm', 'core_plugin', array('name' => $pluginname)) . '</p>';
 381         if ($extraconfirm = $pluginfo->get_uninstall_extra_warning()) {
 382             $confirm .= $extraconfirm;
 383         }
 384
 385         $output .= $this->output->header();
 386         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 387         $output .= $this->output->confirm($confirm, $continueurl, $cancelurl);
 388         $output .= $this->output->footer();
 389
 390         return $output;
 391     }
 392
 393     /**
 394      * Display a page with results of plugin uninstallation and offer removal of plugin files.
 395      *
 396      * @param core_plugin_manager $pluginman
 397      * @param \core\plugininfo\base $pluginfo
 398      * @param progress_trace_buffer $progress
 399      * @param moodle_url $continueurl URL to continue to remove the plugin folder
 400      * @return string
 401      */
 402     public function plugin_uninstall_results_removable_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo,
 403                                                             progress_trace_buffer $progress, moodle_url $continueurl) {
 404         $output = '';
 405
 406         $pluginname = $pluginman->plugin_name($pluginfo->component);
 407
 408         // Do not show navigation here, they must click one of the buttons.
 409         $this->page->set_pagelayout('maintenance');
 410         $this->page->set_cacheable(false);
 411
 412         $output .= $this->output->header();
 413         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 414
 415         $output .= $this->output->box($progress->get_buffer(), 'generalbox uninstallresultmessage');
 416
 417         $confirm = $this->output->container(get_string('uninstalldeleteconfirm', 'core_plugin',
 418             array('name' => $pluginname, 'rootdir' => $pluginfo->rootdir)), 'uninstalldeleteconfirm');
 419
 420         if ($repotype = $pluginman->plugin_external_source($pluginfo->component)) {
 421             $confirm .= $this->output->container(get_string('uninstalldeleteconfirmexternal', 'core_plugin', $repotype),
 422                 'uninstalldeleteconfirmexternal');
 423         }
 424
 425         // After any uninstall we must execute full upgrade to finish the cleanup!
 426         $output .= $this->output->confirm($confirm, $continueurl, new moodle_url('/admin/index.php'));
 427         $output .= $this->output->footer();
 428
 429         return $output;
 430     }
 431
 432     /**
 433      * Display a page with results of plugin uninstallation and inform about the need to remove plugin files manually.
 434      *
 435      * @param core_plugin_manager $pluginman
 436      * @param \core\plugininfo\base $pluginfo
 437      * @param progress_trace_buffer $progress
 438      * @return string
 439      */
 440     public function plugin_uninstall_results_page(core_plugin_manager $pluginman, \core\plugininfo\base $pluginfo, progress_trace_buffer $progress) {
 441         $output = '';
 442
 443         $pluginname = $pluginfo->component;
 444
 445         $output .= $this->output->header();
 446         $output .= $this->output->heading(get_string('uninstalling', 'core_plugin', array('name' => $pluginname)));
 447
 448         $output .= $this->output->box($progress->get_buffer(), 'generalbox uninstallresultmessage');
 449
 450         $output .= $this->output->box(get_string('uninstalldelete', 'core_plugin',
 451             array('name' => $pluginname, 'rootdir' => $pluginfo->rootdir)), 'generalbox uninstalldelete');
 452         $output .= $this->output->continue_button(new moodle_url('/admin/index.php'));
 453         $output .= $this->output->footer();
 454
 455         return $output;
 456     }
 457
 458     /**
 459      * Display the plugin management page (admin/environment.php).
 460      * @param array $versions
 461      * @param string $version
 462      * @param boolean $envstatus final result of env check (true/false)
 463      * @param array $environment_results array of results gathered
 464      * @return string HTML to output.
 465      */
 466     public function environment_check_page($versions, $version, $envstatus, $environment_results) {
 467         $output = '';
 468         $output .= $this->header();
 469
 470         // Print the component download link
 471         $output .= html_writer::tag('div', html_writer::link(
 472                     new moodle_url('/admin/environment.php', array('action' => 'updatecomponent', 'sesskey' => sesskey())),
 473                     get_string('updatecomponent', 'admin')),
 474                 array('class' => 'reportlink'));
 475
 476         // Heading.
 477         $output .= $this->heading(get_string('environment', 'admin'));
 478
 479         // Box with info and a menu to choose the version.
 480         $output .= $this->box_start();
 481         $output .= html_writer::tag('div', get_string('adminhelpenvironment'));
 482         $select = new single_select(new moodle_url('/admin/environment.php'), 'version', $versions, $version, null);
 483         $select->label = get_string('moodleversion');
 484         $output .= $this->render($select);
 485         $output .= $this->box_end();
 486
 487         // The results
 488         $output .= $this->environment_check_table($envstatus, $environment_results);
 489
 490         $output .= $this->footer();
 491         return $output;
 492     }
 493
 494     /**
 495      * Output a warning message, of the type that appears on the admin notifications page.
 496      * @param string $message the message to display.
 497      * @param string $type type class
 498      * @return string HTML to output.
 499      */
 500     protected function warning($message, $type = 'warning') {
 501         return $this->box($message, 'generalbox admin' . $type);
 502     }
 503
 504     /**
 505      * Render an appropriate message if dataroot is insecure.
 506      * @param bool $insecuredataroot
 507      * @return string HTML to output.
 508      */
 509     protected function insecure_dataroot_warning($insecuredataroot) {
 510         global $CFG;
 511
 512         if ($insecuredataroot == INSECURE_DATAROOT_WARNING) {
 513             return $this->warning(get_string('datarootsecuritywarning', 'admin', $CFG->dataroot));
 514
 515         } else if ($insecuredataroot == INSECURE_DATAROOT_ERROR) {
 516             return $this->warning(get_string('datarootsecurityerror', 'admin', $CFG->dataroot), 'error');
 517
 518         } else {
 519             return '';
 520         }
 521     }
 522
 523     /**
 524      * Render an appropriate message if dataroot is insecure.
 525      * @param bool $errorsdisplayed
 526      * @return string HTML to output.
 527      */
 528     protected function display_errors_warning($errorsdisplayed) {
 529         if (!$errorsdisplayed) {
 530             return '';
 531         }
 532
 533         return $this->warning(get_string('displayerrorswarning', 'admin'));
 534     }
 535
 536     /**
 537      * Render an appropriate message if themdesignermode is enabled.
 538      * @param bool $themedesignermode true if enabled
 539      * @return string HTML to output.
 540      */
 541     protected function themedesignermode_warning($themedesignermode) {
 542         if (!$themedesignermode) {
 543             return '';
 544         }
 545
 546         return $this->warning(get_string('themedesignermodewarning', 'admin'));
 547     }
 548
 549     /**
 550      * Render an appropriate message if iconv is buggy and mbstring missing.
 551      * @param bool $buggyiconvnomb
 552      * @return string HTML to output.
 553      */
 554     protected function buggy_iconv_warning($buggyiconvnomb) {
 555         if (!$buggyiconvnomb) {
 556             return '';
 557         }
 558
 559         return $this->warning(get_string('warningiconvbuggy', 'admin'));
 560     }
 561
 562     /**
 563      * Render an appropriate message if cron has not been run recently.
 564      * @param bool $cronoverdue
 565      * @return string HTML to output.
 566      */
 567     public function cron_overdue_warning($cronoverdue) {
 568         global $CFG;
 569         if (!$cronoverdue) {
 570             return '';
 571         }
 572
 573         if (empty($CFG->cronclionly)) {
 574             $url = new moodle_url('/admin/cron.php');
 575             if (!empty($CFG->cronremotepassword)) {
 576                 $url = new moodle_url('/admin/cron.php', array('password' => $CFG->cronremotepassword));
 577             }
 578
 579             return $this->warning(get_string('cronwarning', 'admin', $url->out()) . '&nbsp;' .
 580                     $this->help_icon('cron', 'admin'));
 581         }
 582
 583         // $CFG->cronclionly is not empty: cron can run only from CLI.
 584         return $this->warning(get_string('cronwarningcli', 'admin') . '&nbsp;' .
 585                 $this->help_icon('cron', 'admin'));
 586     }
 587
 588     /**
 589      * Render an appropriate message if there are any problems with the DB set-up.
 590      * @param bool $dbproblems
 591      * @return string HTML to output.
 592      */
 593     public function db_problems($dbproblems) {
 594         if (!$dbproblems) {
 595             return '';
 596         }
 597
 598         return $this->warning($dbproblems);
 599     }
 600
 601     /**
 602      * Renders cache warnings if there are any.
 603      *
 604      * @param string[] $cachewarnings
 605      * @return string
 606      */
 607     public function cache_warnings(array $cachewarnings) {
 608         if (!count($cachewarnings)) {
 609             return '';
 610         }
 611         return join("\n", array_map(array($this, 'warning'), $cachewarnings));
 612     }
 613
 614     /**
 615      * Renders events 1 API handlers warning.
 616      *
 617      * @param array $eventshandlers
 618      * @return string
 619      */
 620     public function events_handlers($eventshandlers) {
 621         if ($eventshandlers) {
 622             $components = '';
 623             foreach ($eventshandlers as $eventhandler) {
 624                 $components .= $eventhandler->component . ', ';
 625             }
 626             $components = rtrim($components, ', ');
 627             return $this->warning(get_string('eventshandlersinuse', 'admin', $components));
 628         }
 629     }
 630
 631     /**
 632      * Render an appropriate message if the site in in maintenance mode.
 633      * @param bool $maintenancemode
 634      * @return string HTML to output.
 635      */
 636     public function maintenance_mode_warning($maintenancemode) {
 637         if (!$maintenancemode) {
 638             return '';
 639         }
 640
 641         $url = new moodle_url('/admin/settings.php', array('section' => 'maintenancemode'));
 642         $url = $url->out(); // get_string() does not support objects in params
 643
 644         return $this->warning(get_string('sitemaintenancewarning2', 'admin', $url));
 645     }
 646
 647     /**
 648      * Display a warning about installing development code if necesary.
 649      * @param int $maturity
 650      * @return string HTML to output.
 651      */
 652     protected function maturity_warning($maturity) {
 653         if ($maturity == MATURITY_STABLE) {
 654             return ''; // No worries.
 655         }
 656
 657         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 658         return $this->warning(
 659                     $this->container(get_string('maturitycorewarning', 'admin', $maturitylevel)) .
 660                     $this->container($this->doc_link('admin/versions', get_string('morehelp'))),
 661                 'error');
 662     }
 663
 664     /*
 665      * If necessary, displays a warning about upgrading a test site.
 666      *
 667      * @param string $testsite
 668      * @return string HTML
 669      */
 670     protected function test_site_warning($testsite) {
 671
 672         if (!$testsite) {
 673             return '';
 674         }
 675
 676         $warning = (get_string('testsiteupgradewarning', 'admin', $testsite));
 677         return $this->warning($warning, 'error');
 678     }
 679
 680     /**
 681      * Output the copyright notice.
 682      * @return string HTML to output.
 683      */
 684     protected function moodle_copyright() {
 685         global $CFG;
 686
 687         //////////////////////////////////////////////////////////////////////////////////////////////////
 688         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
 689         $copyrighttext = '<a href="http://moodle.org/">Moodle</a> '.
 690                          '<a href="http://docs.moodle.org/dev/Releases" title="'.$CFG->version.'">'.$CFG->release.'</a><br />'.
 691                          'Copyright &copy; 1999 onwards, Martin Dougiamas<br />'.
 692                          'and <a href="http://moodle.org/dev">many other contributors</a>.<br />'.
 693                          '<a href="http://docs.moodle.org/dev/License">GNU Public License</a>';
 694         //////////////////////////////////////////////////////////////////////////////////////////////////
 695
 696         return $this->box($copyrighttext, 'copyright');
 697     }
 698
 699     /**
 700      * Display a warning about installing development code if necesary.
 701      * @param int $maturity
 702      * @return string HTML to output.
 703      */
 704     protected function maturity_info($maturity) {
 705         if ($maturity == MATURITY_STABLE) {
 706             return ''; // No worries.
 707         }
 708
 709         $level = 'warning';
 710
 711         if ($maturity == MATURITY_ALPHA) {
 712             $level = 'error';
 713         }
 714
 715         $maturitylevel = get_string('maturity' . $maturity, 'admin');
 716         $warningtext = get_string('maturitycoreinfo', 'admin', $maturitylevel);
 717         $warningtext .= ' ' . $this->doc_link('admin/versions', get_string('morehelp'));
 718         return $this->warning($warningtext, $level);
 719     }
 720
 721     /**
 722      * Displays the info about available Moodle core and plugin updates
 723      *
 724      * The structure of the $updates param has changed since 2.4. It contains not only updates
 725      * for the core itself, but also for all other installed plugins.
 726      *
 727      * @param array|null $updates array of (string)component => array of \core\update\info objects or null
 728      * @param int|null $fetch timestamp of the most recent updates fetch or null (unknown)
 729      * @return string
 730      */
 731     protected function available_updates($updates, $fetch) {
 732
 733         $updateinfo = '';
 734         $someupdateavailable = false;
 735         if (is_array($updates)) {
 736             if (is_array($updates['core'])) {
 737                 $someupdateavailable = true;
 738                 $updateinfo .= $this->heading(get_string('updateavailable', 'core_admin'), 3);
 739                 foreach ($updates['core'] as $update) {
 740                     $updateinfo .= $this->moodle_available_update_info($update);
 741                 }
 742                 $updateinfo .= html_writer::tag('p', get_string('updateavailablerecommendation', 'core_admin'),
 743                     array('class' => 'updateavailablerecommendation'));
 744             }
 745             unset($updates['core']);
 746             // If something has left in the $updates array now, it is updates for plugins.
 747             if (!empty($updates)) {
 748                 $someupdateavailable = true;
 749                 $updateinfo .= $this->heading(get_string('updateavailableforplugin', 'core_admin'), 3);
 750                 $pluginsoverviewurl = new moodle_url('/admin/plugins.php', array('updatesonly' => 1));
 751                 $updateinfo .= $this->container(get_string('pluginsoverviewsee', 'core_admin',
 752                     array('url' => $pluginsoverviewurl->out())));
 753             }
 754         }
 755
 756         if (!$someupdateavailable) {
 757             $now = time();
 758             if ($fetch and ($fetch <= $now) and ($now - $fetch < HOURSECS)) {
 759                 $updateinfo .= $this->heading(get_string('updateavailablenot', 'core_admin'), 3);
 760             }
 761         }
 762
 763         $updateinfo .= $this->container_start('checkforupdates');
 764         $fetchurl = new moodle_url('/admin/index.php', array('fetchupdates' => 1, 'sesskey' => sesskey(), 'cache' => 0));
 765         $updateinfo .= $this->single_button($fetchurl, get_string('checkforupdates', 'core_plugin'));
 766         if ($fetch) {
 767             $updateinfo .= $this->container(get_string('checkforupdateslast', 'core_plugin',
 768                 userdate($fetch, get_string('strftimedatetime', 'core_langconfig'))));
 769         }
 770         $updateinfo .= $this->container_end();
 771
 772         return $this->warning($updateinfo);
 773     }
 774
 775     /**
 776      * Display a warning about not being registered on Moodle.org if necesary.
 777      *
 778      * @param boolean $registered true if the site is registered on Moodle.org
 779      * @return string HTML to output.
 780      */
 781     protected function registration_warning($registered) {
 782
 783         if (!$registered) {
 784
 785             $registerbutton = $this->single_button(new moodle_url('/admin/registration/register.php',
 786                     array('huburl' =>  HUB_MOODLEORGHUBURL, 'hubname' => 'Moodle.org')),
 787                     get_string('register', 'admin'));
 788
 789             return $this->warning( get_string('registrationwarning', 'admin')
 790                     . '&nbsp;' . $this->help_icon('registration', 'admin') . $registerbutton );
 791         }
 792
 793         return '';
 794     }
 795
 796     /**
 797      * Helper method to render the information about the available Moodle update
 798      *
 799      * @param \core\update\info $updateinfo information about the available Moodle core update
 800      */
 801     protected function moodle_available_update_info(\core\update\info $updateinfo) {
 802
 803         $boxclasses = 'moodleupdateinfo';
 804         $info = array();
 805
 806         if (isset($updateinfo->release)) {
 807             $info[] = html_writer::tag('span', get_string('updateavailable_release', 'core_admin', $updateinfo->release),
 808                 array('class' => 'info release'));
 809         }
 810
 811         if (isset($updateinfo->version)) {
 812             $info[] = html_writer::tag('span', get_string('updateavailable_version', 'core_admin', $updateinfo->version),
 813                 array('class' => 'info version'));
 814         }
 815
 816         if (isset($updateinfo->maturity)) {
 817             $info[] = html_writer::tag('span', get_string('maturity'.$updateinfo->maturity, 'core_admin'),
 818                 array('class' => 'info maturity'));
 819             $boxclasses .= ' maturity'.$updateinfo->maturity;
 820         }
 821
 822         if (isset($updateinfo->download)) {
 823             $info[] = html_writer::link($updateinfo->download, get_string('download'), array('class' => 'info download'));
 824         }
 825
 826         if (isset($updateinfo->url)) {
 827             $info[] = html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin'),
 828                 array('class' => 'info more'));
 829         }
 830
 831         $box  = $this->output->box_start($boxclasses);
 832         $box .= $this->output->box(implode(html_writer::tag('span', ' ', array('class' => 'separator')), $info), '');
 833         $box .= $this->output->box_end();
 834
 835         return $box;
 836     }
 837
 838     /**
 839      * Display a link to the release notes.
 840      * @return string HTML to output.
 841      */
 842     protected function release_notes_link() {
 843         $releasenoteslink = get_string('releasenoteslink', 'admin', 'http://docs.moodle.org/dev/Releases');
 844         $releasenoteslink = str_replace('target="_blank"', 'onclick="this.target=\'_blank\'"', $releasenoteslink); // extremely ugly validation hack
 845         return $this->box($releasenoteslink, 'generalbox releasenoteslink');
 846     }
 847
 848     /**
 849      * Display the reload link that appears on several upgrade/install pages.
 850      * @return string HTML to output.
 851      */
 852     function upgrade_reload($url) {
 853         return html_writer::empty_tag('br') .
 854                 html_writer::tag('div',
 855                     html_writer::link($url, $this->pix_icon('i/reload', '', '', array('class' => 'icon icon-pre')) .
 856                             get_string('reload'), array('title' => get_string('reload'))),
 857                 array('class' => 'continuebutton')) . html_writer::empty_tag('br');
 858     }
 859
 860     /**
 861      * Displays all known plugins and information about their installation or upgrade
 862      *
 863      * This default implementation renders all plugins into one big table. The rendering
 864      * options support:
 865      *     (bool)full = false: whether to display up-to-date plugins, too
 866      *     (bool)xdep = false: display the plugins with unsatisified dependecies only
 867      *
 868      * @param core_plugin_manager $pluginman provides information about the plugins.
 869      * @param int $version the version of the Moodle code from version.php.
 870      * @param array $options rendering options
 871      * @return string HTML code
 872      */
 873     public function plugins_check_table(core_plugin_manager $pluginman, $version, array $options = array()) {
 874
 875         $plugininfo = $pluginman->get_plugins();
 876
 877         if (empty($plugininfo)) {
 878             return '';
 879         }
 880
 881         $options['full'] = isset($options['full']) ? (bool)$options['full'] : false;
 882         $options['xdep'] = isset($options['xdep']) ? (bool)$options['xdep'] : false;
 883
 884         $table = new html_table();
 885         $table->id = 'plugins-check';
 886         $table->head = array(
 887             get_string('displayname', 'core_plugin').' / '.get_string('rootdir', 'core_plugin'),
 888             get_string('versiondb', 'core_plugin'),
 889             get_string('versiondisk', 'core_plugin'),
 890             get_string('requires', 'core_plugin'),
 891             get_string('source', 'core_plugin').' / '.get_string('status', 'core_plugin'),
 892         );
 893         $table->colclasses = array(
 894             'displayname', 'versiondb', 'versiondisk', 'requires', 'status',
 895         );
 896         $table->data = array();
 897
 898         // Number of displayed plugins per type.
 899         $numdisplayed = array();
 900         // Number of plugins known to the plugin manager.
 901         $sumtotal = 0;
 902         // Number of plugins requiring attention.
 903         $sumattention = 0;
 904         // List of all components we can cancel installation of.
 905         $installabortable = $pluginman->list_cancellable_installations();
 906         // List of all components we can cancel upgrade of.
 907         $upgradeabortable = $pluginman->list_restorable_archives();
 908
 909         foreach ($plugininfo as $type => $plugins) {
 910
 911             $header = new html_table_cell($pluginman->plugintype_name_plural($type));
 912             $header->header = true;
 913             $header->colspan = count($table->head);
 914             $header = new html_table_row(array($header));
 915             $header->attributes['class'] = 'plugintypeheader type-' . $type;
 916
 917             $numdisplayed[$type] = 0;
 918
 919             if (empty($plugins) and $options['full']) {
 920                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
 921                 $msg->colspan = count($table->head);
 922                 $row = new html_table_row(array($msg));
 923                 $row->attributes['class'] .= 'msg msg-noneinstalled';
 924                 $table->data[] = $header;
 925                 $table->data[] = $row;
 926                 continue;
 927             }
 928
 929             $plugintyperows = array();
 930
 931             foreach ($plugins as $name => $plugin) {
 932                 $sumtotal++;
 933                 $row = new html_table_row();
 934                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
 935
 936                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name, null)) {
 937                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'smallicon pluginicon'));
 938                 } else {
 939                     $icon = '';
 940                 }
 941
 942                 $displayname = new html_table_cell(
 943                     $icon.
 944                     html_writer::span($plugin->displayname, 'pluginname').
 945                     html_writer::div($plugin->get_dir(), 'plugindir')
 946                 );
 947
 948                 $versiondb = new html_table_cell($plugin->versiondb);
 949                 $versiondisk = new html_table_cell($plugin->versiondisk);
 950
 951                 if ($isstandard = $plugin->is_standard()) {
 952                     $row->attributes['class'] .= ' standard';
 953                     $sourcelabel = html_writer::span(get_string('sourcestd', 'core_plugin'), 'sourcetext label');
 954                 } else {
 955                     $row->attributes['class'] .= ' extension';
 956                     $sourcelabel = html_writer::span(get_string('sourceext', 'core_plugin'), 'sourcetext label label-info');
 957                 }
 958
 959                 $coredependency = $plugin->is_core_dependency_satisfied($version);
 960                 $otherpluginsdependencies = $pluginman->are_dependencies_satisfied($plugin->get_other_required_plugins());
 961                 $dependenciesok = $coredependency && $otherpluginsdependencies;
 962
 963                 $statuscode = $plugin->get_status();
 964                 $row->attributes['class'] .= ' status-' . $statuscode;
 965                 $statusclass = 'statustext label ';
 966                 switch ($statuscode) {
 967                     case core_plugin_manager::PLUGIN_STATUS_NEW:
 968                         $statusclass .= $dependenciesok ? 'label-success' : 'label-warning';
 969                         break;
 970                     case core_plugin_manager::PLUGIN_STATUS_UPGRADE:
 971                         $statusclass .= $dependenciesok ? 'label-info' : 'label-warning';
 972                         break;
 973                     case core_plugin_manager::PLUGIN_STATUS_MISSING:
 974                     case core_plugin_manager::PLUGIN_STATUS_DOWNGRADE:
 975                     case core_plugin_manager::PLUGIN_STATUS_DELETE:
 976                         $statusclass .= 'label-important';
 977                         break;
 978                     case core_plugin_manager::PLUGIN_STATUS_NODB:
 979                     case core_plugin_manager::PLUGIN_STATUS_UPTODATE:
 980                         $statusclass .= $dependenciesok ? '' : 'label-warning';
 981                         break;
 982                 }
 983                 $status = html_writer::span(get_string('status_' . $statuscode, 'core_plugin'), $statusclass);
 984
 985                 if (!empty($installabortable[$plugin->component])) {
 986                     $status .= $this->output->single_button(
 987                         new moodle_url($this->page->url, array('abortinstall' => $plugin->component)),
 988                         get_string('cancelinstallone', 'core_plugin'),
 989                         'post',
 990                         array('class' => 'actionbutton cancelinstallone')
 991                     );
 992                 }
 993
 994                 if (!empty($upgradeabortable[$plugin->component])) {
 995                     $status .= $this->output->single_button(
 996                         new moodle_url($this->page->url, array('abortupgrade' => $plugin->component)),
 997                         get_string('cancelupgradeone', 'core_plugin'),
 998                         'post',
 999                         array('class' => 'actionbutton cancelupgradeone')
1000                     );
1001                 }
1002
1003                 $availableupdates = $plugin->available_updates();
1004                 if (!empty($availableupdates)) {
1005                     foreach ($availableupdates as $availableupdate) {
1006                         $status .= $this->plugin_available_update_info($pluginman, $availableupdate);
1007                     }
1008                 }
1009
1010                 $status = new html_table_cell($sourcelabel.' '.$status);
1011
1012                 $requires = new html_table_cell($this->required_column($plugin, $pluginman, $version));
1013
1014                 $statusisboring = in_array($statuscode, array(
1015                         core_plugin_manager::PLUGIN_STATUS_NODB, core_plugin_manager::PLUGIN_STATUS_UPTODATE));
1016
1017                 if ($options['xdep']) {
1018                     // we want to see only plugins with failed dependencies
1019                     if ($dependenciesok) {
1020                         continue;
1021                     }
1022
1023                 } else if ($statusisboring and $dependenciesok and empty($availableupdates)) {
1024                     // no change is going to happen to the plugin - display it only
1025                     // if the user wants to see the full list
1026                     if (empty($options['full'])) {
1027                         continue;
1028                     }
1029
1030                 } else {
1031                     $sumattention++;
1032                 }
1033
1034                 // The plugin should be displayed.
1035                 $numdisplayed[$type]++;
1036                 $row->cells = array($displayname, $versiondb, $versiondisk, $requires, $status);
1037                 $plugintyperows[] = $row;
1038             }
1039
1040             if (empty($numdisplayed[$type]) and empty($options['full'])) {
1041                 continue;
1042             }
1043
1044             $table->data[] = $header;
1045             $table->data = array_merge($table->data, $plugintyperows);
1046         }
1047
1048         // Total number of displayed plugins.
1049         $sumdisplayed = array_sum($numdisplayed);
1050
1051         if ($options['xdep']) {
1052             // At the plugins dependencies check page, display the table only.
1053             return html_writer::table($table);
1054         }
1055
1056         $out = $this->output->container_start('', 'plugins-check-info');
1057
1058         if ($sumdisplayed == 0) {
1059             $out .= $this->output->heading(get_string('pluginchecknone', 'core_plugin'));
1060
1061         } else {
1062             if (empty($options['full'])) {
1063                 $out .= $this->output->heading(get_string('plugincheckattention', 'core_plugin'));
1064             } else {
1065                 $out .= $this->output->heading(get_string('plugincheckall', 'core_plugin'));
1066             }
1067         }
1068
1069         $out .= $this->output->container_start('actions');
1070
1071         $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1072         if ($installableupdates) {
1073             $out .= $this->output->single_button(
1074                 new moodle_url($this->page->url, array('installupdatex' => 1)),
1075                 get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1076                 'post',
1077                 array('class' => 'singlebutton updateavailableinstallall')
1078             );
1079         }
1080
1081         if ($installabortable) {
1082             $out .= $this->output->single_button(
1083                 new moodle_url($this->page->url, array('abortinstallx' => 1)),
1084                 get_string('cancelinstallall', 'core_plugin', count($installabortable)),
1085                 'post',
1086                 array('class' => 'singlebutton cancelinstallall')
1087             );
1088         }
1089
1090         if ($upgradeabortable) {
1091             $out .= $this->output->single_button(
1092                 new moodle_url($this->page->url, array('abortupgradex' => 1)),
1093                 get_string('cancelupgradeall', 'core_plugin', count($upgradeabortable)),
1094                 'post',
1095                 array('class' => 'singlebutton cancelupgradeall')
1096             );
1097         }
1098
1099         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 0)),
1100             get_string('plugincheckattention', 'core_plugin')).' '.html_writer::span($sumattention, 'badge'));
1101
1102         $out .= html_writer::div(html_writer::link(new moodle_url($this->page->url, array('showallplugins' => 1)),
1103             get_string('plugincheckall', 'core_plugin')).' '.html_writer::span($sumtotal, 'badge'));
1104
1105         $out .= $this->output->container_end(); // End of .actions container.
1106         $out .= $this->output->container_end(); // End of #plugins-check-info container.
1107
1108         if ($sumdisplayed > 0 or $options['full']) {
1109             $out .= html_writer::table($table);
1110         }
1111
1112         return $out;
1113     }
1114
1115     /**
1116      * Display the continue / cancel widgets for the plugins management pages.
1117      *
1118      * @param null|moodle_url $continue URL for the continue button, should it be displayed
1119      * @param null|moodle_url $cancel URL for the cancel link, defaults to the current page
1120      * @return string HTML
1121      */
1122     public function plugins_management_confirm_buttons(moodle_url $continue=null, moodle_url $cancel=null) {
1123
1124         $out = html_writer::start_div('plugins-management-confirm-buttons');
1125
1126         if (!empty($continue)) {
1127             $out .= $this->output->single_button($continue, get_string('continue'), 'post', array('class' => 'continue'));
1128         }
1129
1130         if (empty($cancel)) {
1131             $cancel = $this->page->url;
1132         }
1133         $out .= html_writer::div(html_writer::link($cancel, get_string('cancel')), 'cancel');
1134
1135         return $out;
1136     }
1137
1138     /**
1139      * Displays the information about missing dependencies
1140      *
1141      * @param core_plugin_manager $pluginman
1142      * @return string
1143      */
1144     protected function missing_dependencies(core_plugin_manager $pluginman) {
1145
1146         $dependencies = $pluginman->missing_dependencies();
1147
1148         if (empty($dependencies)) {
1149             return '';
1150         }
1151
1152         $available = array();
1153         $unavailable = array();
1154         $unknown = array();
1155
1156         foreach ($dependencies as $component => $remoteinfo) {
1157             if ($remoteinfo === false) {
1158                 // The required version is not available. Let us check if there
1159                 // is at least some version in the plugins directory.
1160                 $remoteinfoanyversion = $pluginman->get_remote_plugin_info($component, ANY_VERSION, false);
1161                 if ($remoteinfoanyversion === false) {
1162                     $unknown[$component] = $component;
1163                 } else {
1164                     $unavailable[$component] = $remoteinfoanyversion;
1165                 }
1166             } else {
1167                 $available[$component] = $remoteinfo;
1168             }
1169         }
1170
1171         $out  = $this->output->container_start('plugins-check-dependencies');
1172
1173         if ($unavailable or $unknown) {
1174             $out .= $this->output->heading(get_string('misdepsunavail', 'core_plugin'));
1175             if ($unknown) {
1176                 $out .= $this->output->notification(get_string('misdepsunknownlist', 'core_plugin', implode($unknown, ', ')));
1177             }
1178             if ($unavailable) {
1179                 $unavailablelist = array();
1180                 foreach ($unavailable as $component => $remoteinfoanyversion) {
1181                     $unavailablelistitem = html_writer::link('https://moodle.org/plugins/view.php?plugin='.$component,
1182                         '<strong>'.$remoteinfoanyversion->name.'</strong>');
1183                     if ($remoteinfoanyversion->version) {
1184                         $unavailablelistitem .= ' ('.$component.' &gt; '.$remoteinfoanyversion->version->version.')';
1185                     } else {
1186                         $unavailablelistitem .= ' ('.$component.')';
1187                     }
1188                     $unavailablelist[] = $unavailablelistitem;
1189                 }
1190                 $out .= $this->output->notification(get_string('misdepsunavaillist', 'core_plugin',
1191                     implode($unavailablelist, ', ')));
1192             }
1193             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1194             $out .= ' '.html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1195                 get_string('dependencyuploadmissing', 'core_plugin'));
1196             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1197         }
1198
1199         if ($available) {
1200             $out .= $this->output->heading(get_string('misdepsavail', 'core_plugin'));
1201             $out .= $this->output->container_start('plugins-check-dependencies-actions');
1202
1203             $installable = $pluginman->filter_installable($available);
1204             if ($installable) {
1205                 $out .= $this->output->single_button(
1206                     new moodle_url($this->page->url, array('installdepx' => 1)),
1207                     get_string('dependencyinstallmissing', 'core_plugin', count($installable)),
1208                     'post',
1209                     array('class' => 'singlebutton dependencyinstallmissing')
1210                 );
1211             }
1212
1213             $out .= html_writer::div(html_writer::link(new moodle_url('/admin/tool/installaddon/'),
1214                 get_string('dependencyuploadmissing', 'core_plugin')), 'dependencyuploadmissing');
1215
1216             $out .= $this->output->container_end(); // End of .plugins-check-dependencies-actions container.
1217
1218             $out .= $this->available_missing_dependencies_list($pluginman, $available);
1219         }
1220
1221         $out .= $this->output->container_end(); // End of .plugins-check-dependencies container.
1222
1223         return $out;
1224     }
1225
1226     /**
1227      * Displays the list if available missing dependencies.
1228      *
1229      * @param core_plugin_manager $pluginman
1230      * @param array $dependencies
1231      * @return string
1232      */
1233     protected function available_missing_dependencies_list(core_plugin_manager $pluginman, array $dependencies) {
1234         global $CFG;
1235
1236         $table = new html_table();
1237         $table->id = 'plugins-check-available-dependencies';
1238         $table->head = array(
1239             get_string('displayname', 'core_plugin'),
1240             get_string('release', 'core_plugin'),
1241             get_string('version', 'core_plugin'),
1242             get_string('supportedmoodleversions', 'core_plugin'),
1243             get_string('info', 'core'),
1244         );
1245         $table->colclasses = array('displayname', 'release', 'version', 'supportedmoodleversions', 'info');
1246         $table->data = array();
1247
1248         foreach ($dependencies as $plugin) {
1249
1250             $supportedmoodles = array();
1251             foreach ($plugin->version->supportedmoodles as $moodle) {
1252                 if ($CFG->branch == str_replace('.', '', $moodle->release)) {
1253                     $supportedmoodles[] = html_writer::span($moodle->release, 'label label-success');
1254                 } else {
1255                     $supportedmoodles[] = html_writer::span($moodle->release, 'label');
1256                 }
1257             }
1258
1259             $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1260             if ($requriedby) {
1261                 foreach ($requriedby as $ix => $val) {
1262                     $inf = $pluginman->get_plugin_info($val);
1263                     if ($inf) {
1264                         $requriedby[$ix] = $inf->displayname.' ('.$inf->component.')';
1265                     }
1266                 }
1267                 $info = html_writer::div(
1268                     get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1269                     'requiredby'
1270                 );
1271             } else {
1272                 $info = '';
1273             }
1274
1275             $info .= $this->output->container_start('actions');
1276
1277             $info .= html_writer::div(
1278                 html_writer::link('https://moodle.org/plugins/view.php?plugin='.$plugin->component,
1279                     get_string('misdepinfoplugin', 'core_plugin')),
1280                 'misdepinfoplugin'
1281             );
1282
1283             $info .= html_writer::div(
1284                 html_writer::link('https://moodle.org/plugins/pluginversion.php?id='.$plugin->version->id,
1285                     get_string('misdepinfoversion', 'core_plugin')),
1286                 'misdepinfoversion'
1287             );
1288
1289             $info .= html_writer::div(html_writer::link($plugin->version->downloadurl, get_string('download')), 'misdepdownload');
1290
1291             if ($pluginman->is_remote_plugin_installable($plugin->component, $plugin->version->version, $reason)) {
1292                 $info .= $this->output->single_button(
1293                     new moodle_url($this->page->url, array('installdep' => $plugin->component)),
1294                     get_string('dependencyinstall', 'core_plugin'),
1295                     'post',
1296                     array('class' => 'singlebutton dependencyinstall')
1297                 );
1298             } else {
1299                 $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1300                 if ($reasonhelp) {
1301                     $info .= html_writer::div($reasonhelp, 'reasonhelp dependencyinstall');
1302                 }
1303             }
1304
1305             $info .= $this->output->container_end(); // End of .actions container.
1306
1307             $table->data[] = array(
1308                 html_writer::div($plugin->name, 'name').' '.html_writer::div($plugin->component, 'component'),
1309                 $plugin->version->release,
1310                 $plugin->version->version,
1311                 implode($supportedmoodles, ' '),
1312                 $info
1313             );
1314         }
1315
1316         return html_writer::table($table);
1317     }
1318
1319     /**
1320      * Explain why {@link core_plugin_manager::is_remote_plugin_installable()} returned false.
1321      *
1322      * @param string $reason the reason code as returned by the plugin manager
1323      * @return string
1324      */
1325     protected function info_remote_plugin_not_installable($reason) {
1326
1327         if ($reason === 'notwritableplugintype' or $reason === 'notwritableplugin') {
1328             return $this->output->help_icon('notwritable', 'core_plugin', get_string('notwritable', 'core_plugin'));
1329         }
1330
1331         if ($reason === 'remoteunavailable') {
1332             return $this->output->help_icon('notdownloadable', 'core_plugin', get_string('notdownloadable', 'core_plugin'));
1333         }
1334
1335         return false;
1336     }
1337
1338     /**
1339      * Formats the information that needs to go in the 'Requires' column.
1340      * @param \core\plugininfo\base $plugin the plugin we are rendering the row for.
1341      * @param core_plugin_manager $pluginman provides data on all the plugins.
1342      * @param string $version
1343      * @return string HTML code
1344      */
1345     protected function required_column(\core\plugininfo\base $plugin, core_plugin_manager $pluginman, $version) {
1346
1347         $requires = array();
1348         $displayuploadlink = false;
1349         $displayupdateslink = false;
1350
1351         foreach ($pluginman->resolve_requirements($plugin, $version) as $reqname => $reqinfo) {
1352             if ($reqname === 'core') {
1353                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1354                     $class = 'requires-ok';
1355                     $label = '';
1356                 } else {
1357                     $class = 'requires-failed';
1358                     $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'label label-important');
1359                 }
1360                 $requires[] = html_writer::tag('li',
1361                     html_writer::span(get_string('moodleversion', 'core_plugin', $plugin->versionrequires), 'dep dep-core').
1362                     ' '.$label, array('class' => $class));
1363
1364             } else {
1365                 $actions = array();
1366
1367                 if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OK) {
1368                     $label = '';
1369                     $class = 'requires-ok';
1370
1371                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_MISSING) {
1372                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1373                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'label label-warning');
1374                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'label label-warning');
1375                         $class = 'requires-failed requires-missing requires-available';
1376                         $actions[] = html_writer::link(
1377                             new moodle_url('https://moodle.org/plugins/view.php', array('plugin' => $reqname)),
1378                             get_string('misdepinfoplugin', 'core_plugin')
1379                         );
1380
1381                     } else {
1382                         $label = html_writer::span(get_string('dependencymissing', 'core_plugin'), 'label label-important');
1383                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1384                             'label label-important');
1385                         $class = 'requires-failed requires-missing requires-unavailable';
1386                     }
1387                     $displayuploadlink = true;
1388
1389                 } else if ($reqinfo->status == $pluginman::REQUIREMENT_STATUS_OUTDATED) {
1390                     if ($reqinfo->availability == $pluginman::REQUIREMENT_AVAILABLE) {
1391                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'label label-warning');
1392                         $label .= ' '.html_writer::span(get_string('dependencyavailable', 'core_plugin'), 'label label-warning');
1393                         $class = 'requires-failed requires-outdated requires-available';
1394                         $displayupdateslink = true;
1395
1396                     } else {
1397                         $label = html_writer::span(get_string('dependencyfails', 'core_plugin'), 'label label-important');
1398                         $label .= ' '.html_writer::span(get_string('dependencyunavailable', 'core_plugin'),
1399                             'label label-important');
1400                         $class = 'requires-failed requires-outdated requires-unavailable';
1401                     }
1402                     $displayuploadlink = true;
1403                 }
1404
1405                 if ($reqinfo->reqver != ANY_VERSION) {
1406                     $str = 'otherpluginversion';
1407                 } else {
1408                     $str = 'otherplugin';
1409                 }
1410
1411                 $requires[] = html_writer::tag('li', html_writer::span(
1412                     get_string($str, 'core_plugin', array('component' => $reqname, 'version' => $reqinfo->reqver)),
1413                     'dep dep-plugin').' '.$label.' '.html_writer::span(implode(' | ', $actions), 'actions'),
1414                     array('class' => $class)
1415                 );
1416             }
1417         }
1418
1419         if (!$requires) {
1420             return '';
1421         }
1422
1423         $out = html_writer::tag('ul', implode("\n", $requires));
1424
1425         if ($displayuploadlink) {
1426             $out .= html_writer::div(
1427                 html_writer::link(
1428                     new moodle_url('/admin/tool/installaddon/'),
1429                     get_string('dependencyuploadmissing', 'core_plugin')
1430                 ),
1431                 'dependencyuploadmissing'
1432             );
1433         }
1434
1435         if ($displayupdateslink) {
1436             $out .= html_writer::div(
1437                 html_writer::link(
1438                     new moodle_url($this->page->url, array('sesskey' => sesskey(), 'fetchupdates' => 1)),
1439                     get_string('checkforupdates', 'core_plugin')
1440                 ),
1441                 'checkforupdates'
1442             );
1443         }
1444
1445         return $out;
1446
1447     }
1448
1449     /**
1450      * Prints an overview about the plugins - number of installed, number of extensions etc.
1451      *
1452      * @param core_plugin_manager $pluginman provides information about the plugins
1453      * @param array $options filtering options
1454      * @return string as usually
1455      */
1456     public function plugins_overview_panel(core_plugin_manager $pluginman, array $options = array()) {
1457
1458         $plugininfo = $pluginman->get_plugins();
1459
1460         $numtotal = $numextension = $numupdatable = 0;
1461
1462         foreach ($plugininfo as $type => $plugins) {
1463             foreach ($plugins as $name => $plugin) {
1464                 if ($plugin->available_updates()) {
1465                     $numupdatable++;
1466                 }
1467                 if ($plugin->get_status() === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1468                     continue;
1469                 }
1470                 $numtotal++;
1471                 if (!$plugin->is_standard()) {
1472                     $numextension++;
1473                 }
1474             }
1475         }
1476
1477         $infoall = html_writer::link(
1478             new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 0)),
1479             get_string('overviewall', 'core_plugin'),
1480             array('title' => get_string('filterall', 'core_plugin'))
1481         ).' '.html_writer::span($numtotal, 'badge number number-all');
1482
1483         $infoext = html_writer::link(
1484             new moodle_url($this->page->url, array('contribonly' => 1, 'updatesonly' => 0)),
1485             get_string('overviewext', 'core_plugin'),
1486             array('title' => get_string('filtercontribonly', 'core_plugin'))
1487         ).' '.html_writer::span($numextension, 'badge number number-additional');
1488
1489         if ($numupdatable) {
1490             $infoupdatable = html_writer::link(
1491                 new moodle_url($this->page->url, array('contribonly' => 0, 'updatesonly' => 1)),
1492                 get_string('overviewupdatable', 'core_plugin'),
1493                 array('title' => get_string('filterupdatesonly', 'core_plugin'))
1494             ).' '.html_writer::span($numupdatable, 'badge badge-info number number-updatable');
1495         } else {
1496             // No updates, or the notifications disabled.
1497             $infoupdatable = '';
1498         }
1499
1500         $out = html_writer::start_div('', array('id' => 'plugins-overview-panel'));
1501
1502         if (!empty($options['updatesonly'])) {
1503             $out .= $this->output->heading(get_string('overviewupdatable', 'core_plugin'), 3);
1504         } else if (!empty($options['contribonly'])) {
1505             $out .= $this->output->heading(get_string('overviewext', 'core_plugin'), 3);
1506         }
1507
1508         if ($numupdatable) {
1509             $installableupdates = $pluginman->filter_installable($pluginman->available_updates());
1510             if ($installableupdates) {
1511                 $out .= $this->output->single_button(
1512                     new moodle_url($this->page->url, array('installupdatex' => 1)),
1513                     get_string('updateavailableinstallall', 'core_admin', count($installableupdates)),
1514                     'post',
1515                     array('class' => 'singlebutton updateavailableinstallall')
1516                 );
1517             }
1518         }
1519
1520         $out .= html_writer::div($infoall, 'info info-all').
1521             html_writer::div($infoext, 'info info-ext').
1522             html_writer::div($infoupdatable, 'info info-updatable');
1523
1524         $out .= html_writer::end_div(); // End of #plugins-overview-panel block.
1525
1526         return $out;
1527     }
1528
1529     /**
1530      * Displays all known plugins and links to manage them
1531      *
1532      * This default implementation renders all plugins into one big table.
1533      *
1534      * @param core_plugin_manager $pluginman provides information about the plugins.
1535      * @param array $options filtering options
1536      * @return string HTML code
1537      */
1538     public function plugins_control_panel(core_plugin_manager $pluginman, array $options = array()) {
1539
1540         $plugininfo = $pluginman->get_plugins();
1541
1542         // Filter the list of plugins according the options.
1543         if (!empty($options['updatesonly'])) {
1544             $updateable = array();
1545             foreach ($plugininfo as $plugintype => $pluginnames) {
1546                 foreach ($pluginnames as $pluginname => $pluginfo) {
1547                     $pluginavailableupdates = $pluginfo->available_updates();
1548                     if (!empty($pluginavailableupdates)) {
1549                         foreach ($pluginavailableupdates as $pluginavailableupdate) {
1550                             $updateable[$plugintype][$pluginname] = $pluginfo;
1551                         }
1552                     }
1553                 }
1554             }
1555             $plugininfo = $updateable;
1556         }
1557
1558         if (!empty($options['contribonly'])) {
1559             $contribs = array();
1560             foreach ($plugininfo as $plugintype => $pluginnames) {
1561                 foreach ($pluginnames as $pluginname => $pluginfo) {
1562                     if (!$pluginfo->is_standard()) {
1563                         $contribs[$plugintype][$pluginname] = $pluginfo;
1564                     }
1565                 }
1566             }
1567             $plugininfo = $contribs;
1568         }
1569
1570         if (empty($plugininfo)) {
1571             return '';
1572         }
1573
1574         $table = new html_table();
1575         $table->id = 'plugins-control-panel';
1576         $table->head = array(
1577             get_string('displayname', 'core_plugin'),
1578             get_string('version', 'core_plugin'),
1579             get_string('availability', 'core_plugin'),
1580             get_string('actions', 'core_plugin'),
1581             get_string('notes','core_plugin'),
1582         );
1583         $table->headspan = array(1, 1, 1, 2, 1);
1584         $table->colclasses = array(
1585             'pluginname', 'version', 'availability', 'settings', 'uninstall', 'notes'
1586         );
1587
1588         foreach ($plugininfo as $type => $plugins) {
1589             $heading = $pluginman->plugintype_name_plural($type);
1590             $pluginclass = core_plugin_manager::resolve_plugininfo_class($type);
1591             if ($manageurl = $pluginclass::get_manage_url()) {
1592                 $heading .= $this->output->action_icon($manageurl, new pix_icon('i/settings',
1593                     get_string('settings', 'core_plugin')));
1594             }
1595             $header = new html_table_cell(html_writer::tag('span', $heading, array('id'=>'plugin_type_cell_'.$type)));
1596             $header->header = true;
1597             $header->colspan = array_sum($table->headspan);
1598             $header = new html_table_row(array($header));
1599             $header->attributes['class'] = 'plugintypeheader type-' . $type;
1600             $table->data[] = $header;
1601
1602             if (empty($plugins)) {
1603                 $msg = new html_table_cell(get_string('noneinstalled', 'core_plugin'));
1604                 $msg->colspan = array_sum($table->headspan);
1605                 $row = new html_table_row(array($msg));
1606                 $row->attributes['class'] .= 'msg msg-noneinstalled';
1607                 $table->data[] = $row;
1608                 continue;
1609             }
1610
1611             foreach ($plugins as $name => $plugin) {
1612                 $row = new html_table_row();
1613                 $row->attributes['class'] = 'type-' . $plugin->type . ' name-' . $plugin->type . '_' . $plugin->name;
1614
1615                 if ($this->page->theme->resolve_image_location('icon', $plugin->type . '_' . $plugin->name)) {
1616                     $icon = $this->output->pix_icon('icon', '', $plugin->type . '_' . $plugin->name, array('class' => 'icon pluginicon'));
1617                 } else {
1618                     $icon = $this->output->pix_icon('spacer', '', 'moodle', array('class' => 'icon pluginicon noicon'));
1619                 }
1620                 $status = $plugin->get_status();
1621                 $row->attributes['class'] .= ' status-'.$status;
1622                 $pluginname  = html_writer::tag('div', $icon.$plugin->displayname, array('class' => 'displayname')).
1623                                html_writer::tag('div', $plugin->component, array('class' => 'componentname'));
1624                 $pluginname  = new html_table_cell($pluginname);
1625
1626                 $version = html_writer::div($plugin->versiondb, 'versionnumber');
1627                 if ((string)$plugin->release !== '') {
1628                     $version = html_writer::div($plugin->release, 'release').$version;
1629                 }
1630                 $version = new html_table_cell($version);
1631
1632                 $isenabled = $plugin->is_enabled();
1633                 if (is_null($isenabled)) {
1634                     $availability = new html_table_cell('');
1635                 } else if ($isenabled) {
1636                     $row->attributes['class'] .= ' enabled';
1637                     $availability = new html_table_cell(get_string('pluginenabled', 'core_plugin'));
1638                 } else {
1639                     $row->attributes['class'] .= ' disabled';
1640                     $availability = new html_table_cell(get_string('plugindisabled', 'core_plugin'));
1641                 }
1642
1643                 $settingsurl = $plugin->get_settings_url();
1644                 if (!is_null($settingsurl)) {
1645                     $settings = html_writer::link($settingsurl, get_string('settings', 'core_plugin'), array('class' => 'settings'));
1646                 } else {
1647                     $settings = '';
1648                 }
1649                 $settings = new html_table_cell($settings);
1650
1651                 if ($uninstallurl = $pluginman->get_uninstall_url($plugin->component, 'overview')) {
1652                     $uninstall = html_writer::link($uninstallurl, get_string('uninstall', 'core_plugin'));
1653                 } else {
1654                     $uninstall = '';
1655                 }
1656                 $uninstall = new html_table_cell($uninstall);
1657
1658                 if ($plugin->is_standard()) {
1659                     $row->attributes['class'] .= ' standard';
1660                     $source = '';
1661                 } else {
1662                     $row->attributes['class'] .= ' extension';
1663                     $source = html_writer::div(get_string('sourceext', 'core_plugin'), 'source label label-info');
1664                 }
1665
1666                 if ($status === core_plugin_manager::PLUGIN_STATUS_MISSING) {
1667                     $msg = html_writer::div(get_string('status_missing', 'core_plugin'), 'statusmsg label label-important');
1668                 } else if ($status === core_plugin_manager::PLUGIN_STATUS_NEW) {
1669                     $msg = html_writer::div(get_string('status_new', 'core_plugin'), 'statusmsg label label-success');
1670                 } else {
1671                     $msg = '';
1672                 }
1673
1674                 $requriedby = $pluginman->other_plugins_that_require($plugin->component);
1675                 if ($requriedby) {
1676                     $requiredby = html_writer::tag('div', get_string('requiredby', 'core_plugin', implode(', ', $requriedby)),
1677                         array('class' => 'requiredby'));
1678                 } else {
1679                     $requiredby = '';
1680                 }
1681
1682                 $updateinfo = '';
1683                 if (is_array($plugin->available_updates())) {
1684                     foreach ($plugin->available_updates() as $availableupdate) {
1685                         $updateinfo .= $this->plugin_available_update_info($pluginman, $availableupdate);
1686                     }
1687                 }
1688
1689                 $notes = new html_table_cell($source.$msg.$requiredby.$updateinfo);
1690
1691                 $row->cells = array(
1692                     $pluginname, $version, $availability, $settings, $uninstall, $notes
1693                 );
1694                 $table->data[] = $row;
1695             }
1696         }
1697
1698         return html_writer::table($table);
1699     }
1700
1701     /**
1702      * Helper method to render the information about the available plugin update
1703      *
1704      * @param core_plugin_manager $pluginman plugin manager instance
1705      * @param \core\update\info $updateinfo information about the available update for the plugin
1706      */
1707     protected function plugin_available_update_info(core_plugin_manager $pluginman, \core\update\info $updateinfo) {
1708
1709         $boxclasses = 'pluginupdateinfo';
1710         $info = array();
1711
1712         if (isset($updateinfo->release)) {
1713             $info[] = html_writer::div(
1714                 get_string('updateavailable_release', 'core_plugin', $updateinfo->release),
1715                 'info release'
1716             );
1717         }
1718
1719         if (isset($updateinfo->maturity)) {
1720             $info[] = html_writer::div(
1721                 get_string('maturity'.$updateinfo->maturity, 'core_admin'),
1722                 'info maturity'
1723             );
1724             $boxclasses .= ' maturity'.$updateinfo->maturity;
1725         }
1726
1727         if (isset($updateinfo->download)) {
1728             $info[] = html_writer::div(
1729                 html_writer::link($updateinfo->download, get_string('download')),
1730                 'info download'
1731             );
1732         }
1733
1734         if (isset($updateinfo->url)) {
1735             $info[] = html_writer::div(
1736                 html_writer::link($updateinfo->url, get_string('updateavailable_moreinfo', 'core_plugin')),
1737                 'info more'
1738             );
1739         }
1740
1741         $box = html_writer::start_div($boxclasses);
1742         $box .= html_writer::div(
1743             get_string('updateavailable', 'core_plugin', $updateinfo->version),
1744             'version'
1745         );
1746         $box .= html_writer::div(
1747             implode(html_writer::span(' ', 'separator'), $info),
1748             'infos'
1749         );
1750
1751         if ($pluginman->is_remote_plugin_installable($updateinfo->component, $updateinfo->version, $reason)) {
1752             $box .= $this->output->single_button(
1753                 new moodle_url($this->page->url, array('installupdate' => $updateinfo->component,
1754                     'installupdateversion' => $updateinfo->version)),
1755                 get_string('updateavailableinstall', 'core_admin'),
1756                 'post',
1757                 array('class' => 'singlebutton updateavailableinstall')
1758             );
1759         } else {
1760             $reasonhelp = $this->info_remote_plugin_not_installable($reason);
1761             if ($reasonhelp) {
1762                 $box .= html_writer::div($reasonhelp, 'reasonhelp updateavailableinstall');
1763             }
1764         }
1765         $box .= html_writer::end_div();
1766
1767         return $box;
1768     }
1769
1770     /**
1771      * This function will render one beautiful table with all the environmental
1772      * configuration and how it suits Moodle needs.
1773      *
1774      * @param boolean $result final result of the check (true/false)
1775      * @param environment_results[] $environment_results array of results gathered
1776      * @return string HTML to output.
1777      */
1778     public function environment_check_table($result, $environment_results) {
1779         global $CFG;
1780
1781         // Table headers
1782         $servertable = new html_table();//table for server checks
1783         $servertable->head  = array(
1784             get_string('name'),
1785             get_string('info'),
1786             get_string('report'),
1787             get_string('plugin'),
1788             get_string('status'),
1789         );
1790         $servertable->colclasses = array('centeralign name', 'centeralign info', 'leftalign report', 'leftalign plugin', 'centeralign status');
1791         $servertable->attributes['class'] = 'admintable environmenttable generaltable';
1792         $servertable->id = 'serverstatus';
1793
1794         $serverdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1795
1796         $othertable = new html_table();//table for custom checks
1797         $othertable->head  = array(
1798             get_string('info'),
1799             get_string('report'),
1800             get_string('plugin'),
1801             get_string('status'),
1802         );
1803         $othertable->colclasses = array('aligncenter info', 'alignleft report', 'alignleft plugin', 'aligncenter status');
1804         $othertable->attributes['class'] = 'admintable environmenttable generaltable';
1805         $othertable->id = 'otherserverstatus';
1806
1807         $otherdata = array('ok'=>array(), 'warn'=>array(), 'error'=>array());
1808
1809         // Iterate over each environment_result
1810         $continue = true;
1811         foreach ($environment_results as $environment_result) {
1812             $errorline   = false;
1813             $warningline = false;
1814             $stringtouse = '';
1815             if ($continue) {
1816                 $type = $environment_result->getPart();
1817                 $info = $environment_result->getInfo();
1818                 $status = $environment_result->getStatus();
1819                 $plugin = $environment_result->getPluginName();
1820                 $error_code = $environment_result->getErrorCode();
1821                 // Process Report field
1822                 $rec = new stdClass();
1823                 // Something has gone wrong at parsing time
1824                 if ($error_code) {
1825                     $stringtouse = 'environmentxmlerror';
1826                     $rec->error_code = $error_code;
1827                     $status = get_string('error');
1828                     $errorline = true;
1829                     $continue = false;
1830                 }
1831
1832                 if ($continue) {
1833                     if ($rec->needed = $environment_result->getNeededVersion()) {
1834                         // We are comparing versions
1835                         $rec->current = $environment_result->getCurrentVersion();
1836                         if ($environment_result->getLevel() == 'required') {
1837                             $stringtouse = 'environmentrequireversion';
1838                         } else {
1839                             $stringtouse = 'environmentrecommendversion';
1840                         }
1841
1842                     } else if ($environment_result->getPart() == 'custom_check') {
1843                         // We are checking installed & enabled things
1844                         if ($environment_result->getLevel() == 'required') {
1845                             $stringtouse = 'environmentrequirecustomcheck';
1846                         } else {
1847                             $stringtouse = 'environmentrecommendcustomcheck';
1848                         }
1849
1850                     } else if ($environment_result->getPart() == 'php_setting') {
1851                         if ($status) {
1852                             $stringtouse = 'environmentsettingok';
1853                         } else if ($environment_result->getLevel() == 'required') {
1854                             $stringtouse = 'environmentmustfixsetting';
1855                         } else {
1856                             $stringtouse = 'environmentshouldfixsetting';
1857                         }
1858
1859                     } else {
1860                         if ($environment_result->getLevel() == 'required') {
1861                             $stringtouse = 'environmentrequireinstall';
1862                         } else {
1863                             $stringtouse = 'environmentrecommendinstall';
1864                         }
1865                     }
1866
1867                     // Calculate the status value
1868                     if ($environment_result->getBypassStr() != '') {            //Handle bypassed result (warning)
1869                         $status = get_string('bypassed');
1870                         $warningline = true;
1871                     } else if ($environment_result->getRestrictStr() != '') {   //Handle restricted result (error)
1872                         $status = get_string('restricted');
1873                         $errorline = true;
1874                     } else {
1875                         if ($status) {                                          //Handle ok result (ok)
1876                             $status = get_string('ok');
1877                         } else {
1878                             if ($environment_result->getLevel() == 'optional') {//Handle check result (warning)
1879                                 $status = get_string('check');
1880                                 $warningline = true;
1881                             } else {                                            //Handle error result (error)
1882                                 $status = get_string('check');
1883                                 $errorline = true;
1884                             }
1885                         }
1886                     }
1887                 }
1888
1889                 // Build the text
1890                 $linkparts = array();
1891                 $linkparts[] = 'admin/environment';
1892                 $linkparts[] = $type;
1893                 if (!empty($info)){
1894                    $linkparts[] = $info;
1895                 }
1896                 // Plugin environments do not have docs pages yet.
1897                 if (empty($CFG->docroot) or $environment_result->plugin) {
1898                     $report = get_string($stringtouse, 'admin', $rec);
1899                 } else {
1900                     $report = $this->doc_link(join($linkparts, '/'), get_string($stringtouse, 'admin', $rec));
1901                 }
1902
1903                 // Format error or warning line
1904                 if ($errorline || $warningline) {
1905                     $messagetype = $errorline? 'error':'warn';
1906                 } else {
1907                     $messagetype = 'ok';
1908                 }
1909                 $status = '<span class="'.$messagetype.'">'.$status.'</span>';
1910                 // Here we'll store all the feedback found
1911                 $feedbacktext = '';
1912                 // Append the feedback if there is some
1913                 $feedbacktext .= $environment_result->strToReport($environment_result->getFeedbackStr(), $messagetype);
1914                 //Append the bypass if there is some
1915                 $feedbacktext .= $environment_result->strToReport($environment_result->getBypassStr(), 'warn');
1916                 //Append the restrict if there is some
1917                 $feedbacktext .= $environment_result->strToReport($environment_result->getRestrictStr(), 'error');
1918
1919                 $report .= $feedbacktext;
1920
1921                 // Add the row to the table
1922                 if ($environment_result->getPart() == 'custom_check'){
1923                     $otherdata[$messagetype][] = array ($info, $report, $plugin, $status);
1924                 } else {
1925                     $serverdata[$messagetype][] = array ($type, $info, $report, $plugin, $status);
1926                 }
1927             }
1928         }
1929
1930         //put errors first in
1931         $servertable->data = array_merge($serverdata['error'], $serverdata['warn'], $serverdata['ok']);
1932         $othertable->data = array_merge($otherdata['error'], $otherdata['warn'], $otherdata['ok']);
1933
1934         // Print table
1935         $output = '';
1936         $output .= $this->heading(get_string('serverchecks', 'admin'));
1937         $output .= html_writer::table($servertable);
1938         if (count($othertable->data)){
1939             $output .= $this->heading(get_string('customcheck', 'admin'));
1940             $output .= html_writer::table($othertable);
1941         }
1942
1943         // Finally, if any error has happened, print the summary box
1944         if (!$result) {
1945             $output .= $this->box(get_string('environmenterrortodo', 'admin'), 'environmentbox errorbox');
1946         }
1947
1948         return $output;
1949     }
1950
1951     /**
1952      * Render a simple page for providing the upgrade key.
1953      *
1954      * @param moodle_url|string $url
1955      * @return string
1956      */
1957     public function upgradekey_form_page($url) {
1958
1959         $output = '';
1960         $output .= $this->header();
1961         $output .= $this->container_start('upgradekeyreq');
1962         $output .= $this->heading(get_string('upgradekeyreq', 'core_admin'));
1963         $output .= html_writer::start_tag('form', array('method' => 'POST', 'action' => $url));
1964         $output .= html_writer::empty_tag('input', array('name' => 'upgradekey', 'type' => 'password'));
1965         $output .= html_writer::empty_tag('input', array('value' => get_string('submit'), 'type' => 'submit'));
1966         $output .= html_writer::end_tag('form');
1967         $output .= $this->container_end();
1968         $output .= $this->footer();
1969
1970         return $output;
1971     }
1972
1973     /**
1974      * Check to see if writing to the deprecated legacy log store is enabled.
1975      *
1976      * @return string An error message if writing to the legacy log store is enabled.
1977      */
1978     protected function legacy_log_store_writing_error() {
1979         $enabled = get_config('logstore_legacy', 'loglegacy');
1980         $plugins = explode(',', get_config('tool_log', 'enabled_stores'));
1981         $enabled = $enabled && in_array('logstore_legacy', $plugins);
1982
1983         if ($enabled) {
1984             return $this->warning(get_string('legacylogginginuse'));
1985         }
1986     }
1987 }