//.........这里部分代码省略.........
         return $this->content;
     }
     $course = $this->page->course;
     require_once $CFG->dirroot . '/course/lib.php';
     $context = context_course::instance($course->id);
     $isediting = $this->page->user_is_editing() && has_capability('moodle/course:manageactivities', $context);
     $modinfo = get_fast_modinfo($course);
     /// extra fast view mode
     if (!$isediting) {
         if (!empty($modinfo->sections[0])) {
             $options = array('overflowdiv' => true);
             foreach ($modinfo->sections[0] as $cmid) {
                 $cm = $modinfo->cms[$cmid];
                 if (!$cm->uservisible) {
                     continue;
                 }
                 list($content, $instancename) = get_print_section_cm_text($cm, $course);
                 if (!($url = $cm->get_url())) {
                     $this->content->items[] = $content;
                     $this->content->icons[] = '';
                 } else {
                     $linkcss = $cm->visible ? '' : ' class="dimmed" ';
                     //Accessibility: incidental image - should be empty Alt text
                     $icon = '<img src="' . $cm->get_icon_url() . '" class="icon" alt="" />&nbsp;';
                     $this->content->items[] = '<a title="' . $cm->modplural . '" ' . $linkcss . ' ' . $cm->extra . ' href="' . $url . '">' . $icon . $instancename . '</a>';
                 }
             }
         }
         return $this->content;
     }
     /// slow & hacky editing mode
     $ismoving = ismoving($course->id);
     $section = get_course_section(0, $course->id);
     get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
     $groupbuttons = $course->groupmode;
     $groupbuttonslink = !$course->groupmodeforce;
     if ($ismoving) {
         $strmovehere = get_string('movehere');
         $strmovefull = strip_tags(get_string('movefull', '', "'{$USER->activitycopyname}'"));
         $strcancel = get_string('cancel');
         $stractivityclipboard = $USER->activitycopyname;
     }
     /// Casting $course->modinfo to string prevents one notice when the field is null
     $editbuttons = '';
     if ($ismoving) {
         $this->content->icons[] = '<img src="' . $OUTPUT->pix_url('t/move') . '" class="iconsmall" alt="" />';
         $this->content->items[] = $USER->activitycopyname . '&nbsp;(<a href="' . $CFG->wwwroot . '/course/mod.php?cancelcopy=true&amp;sesskey=' . sesskey() . '">' . $strcancel . '</a>)';
     }
     if (!empty($section->sequence)) {
         $sectionmods = explode(',', $section->sequence);
         $options = array('overflowdiv' => true);
         foreach ($sectionmods as $modnumber) {
             if (empty($mods[$modnumber])) {
                 continue;
             }
             $mod = $mods[$modnumber];
             if (!$ismoving) {
                 if ($groupbuttons) {
                     if (!($mod->groupmodelink = $groupbuttonslink)) {
                         $mod->groupmode = $course->groupmode;
                     }
                 } else {
                     $mod->groupmode = false;
                 }
                 $editbuttons = '<div class="buttons">' . make_editing_buttons($mod, true, true) . '</div>';
             } else {
                 $editbuttons = '';
             }
             if ($mod->visible || has_capability('moodle/course:viewhiddenactivities', $context)) {
                 if ($ismoving) {
                     if ($mod->id == $USER->activitycopy) {
                         continue;
                     }
                     $this->content->items[] = '<a title="' . $strmovefull . '" href="' . $CFG->wwwroot . '/course/mod.php?moveto=' . $mod->id . '&amp;sesskey=' . sesskey() . '">' . '<img style="height:16px; width:80px; border:0px" src="' . $OUTPUT->pix_url('movehere') . '" alt="' . $strmovehere . '" /></a>';
                     $this->content->icons[] = '';
                 }
                 list($content, $instancename) = get_print_section_cm_text($modinfo->cms[$modnumber], $course);
                 $linkcss = $mod->visible ? '' : ' class="dimmed" ';
                 if (!($url = $mod->get_url())) {
                     $this->content->items[] = $content . $editbuttons;
                     $this->content->icons[] = '';
                 } else {
                     //Accessibility: incidental image - should be empty Alt text
                     $icon = '<img src="' . $mod->get_icon_url() . '" class="icon" alt="" />&nbsp;';
                     $this->content->items[] = '<a title="' . $mod->modfullname . '" ' . $linkcss . ' ' . $mod->extra . ' href="' . $url . '">' . $icon . $instancename . '</a>' . $editbuttons;
                 }
             }
         }
     }
     if ($ismoving) {
         $this->content->items[] = '<a title="' . $strmovefull . '" href="' . $CFG->wwwroot . '/course/mod.php?movetosection=' . $section->id . '&amp;sesskey=' . sesskey() . '">' . '<img style="height:16px; width:80px; border:0px" src="' . $OUTPUT->pix_url('movehere') . '" alt="' . $strmovehere . '" /></a>';
         $this->content->icons[] = '';
     }
     if (!empty($modnames)) {
         $this->content->footer = print_section_add_menus($course, 0, $modnames, true, true);
     } else {
         $this->content->footer = '';
     }
     return $this->content;
 }

             $stractivityclipboard = strip_tags(get_string('activityclipboard', '', addslashes($USER->activitycopyname)));
             echo '<p><font size="2">';
             echo "{$stractivityclipboard}&nbsp;&nbsp;(<a href=\"course/mod.php?cancelcopy=true&amp;sesskey={$USER->sesskey}\">" . get_string('cancel') . '</a>)';
             echo '</font></p>';
         }
         $options = NULL;
         $options->noclean = true;
         echo format_text($section->summary, FORMAT_HTML, $options);
         if ($editing) {
             $streditsummary = get_string('editsummary');
             echo "<a title=\"{$streditsummary}\" " . " href=\"course/editsection.php?id={$section->id}\"><img src=\"{$CFG->pixpath}/t/edit.gif\" " . " class=\"iconsmall\" alt=\"{$streditsummary}\" /></a><br /><br />";
         }
         get_all_mods($SITE->id, $mods, $modnames, $modnamesplural, $modnamesused);
         print_section($SITE, $section, $mods, $modnamesused, true);
         if ($editing) {
             print_section_add_menus($SITE, $section->section, $modnames);
         }
         print_box_end();
     }
 }
 if (isloggedin() and !isguest() and isset($CFG->frontpageloggedin)) {
     $frontpagelayout = $CFG->frontpageloggedin;
 } else {
     $frontpagelayout = $CFG->frontpage;
 }
 foreach (explode(',', $frontpagelayout) as $v) {
     switch ($v) {
         /// Display the main part of the front page.
         case FRONTPAGENEWS:
             if ($SITE->newsitems) {
                 // Print forums only when needed

//.........这里部分代码省略.........
             if ($section->stealth) {
                 $content .= html_writer::start_tag('form', array('method' => 'post', 'action' => 'stealth.php'));
                 $content .= html_writer::start_tag('div');
                 $content .= html_writer::empty_tag('input', array('name' => 'id', 'value' => $subpage->get_course_module()->id, 'type' => 'hidden'));
                 $content .= html_writer::empty_tag('input', array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden'));
                 $content .= html_writer::empty_tag('input', array('name' => 'unstealth', 'value' => $section->id, 'type' => 'hidden'));
                 $content .= html_writer::empty_tag('input', array('name' => 'icon', 'src' => $OUTPUT->pix_url('unstealth', 'mod_subpage'), 'type' => 'image', 'title' => $strunstealth, 'alt' => $strunstealth));
                 $content .= html_writer::end_tag('div');
                 $content .= html_writer::end_tag('form');
             } else {
                 $content .= html_writer::start_tag('form', array('method' => 'post', 'action' => 'stealth.php'));
                 $content .= html_writer::start_tag('div');
                 $content .= html_writer::empty_tag('input', array('name' => 'id', 'value' => $subpage->get_course_module()->id, 'type' => 'hidden'));
                 $content .= html_writer::empty_tag('input', array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden'));
                 $content .= html_writer::empty_tag('input', array('name' => 'stealth', 'value' => $section->id, 'type' => 'hidden'));
                 $content .= html_writer::empty_tag('input', array('name' => 'icon', 'src' => $OUTPUT->pix_url('stealth', 'mod_subpage'), 'type' => 'image', 'title' => $strstealth, 'alt' => $strstealth));
                 $content .= html_writer::end_tag('div');
                 $content .= html_writer::end_tag('form');
             }
             $content .= html_writer::empty_tag('br', array());
             if ($movesection) {
                 $content .= html_writer::start_tag('span', array('class' => 'section_move_commands'));
                 if ($section->pageorder > 1) {
                     // Add a arrow to move section up
                     $content .= html_writer::start_tag('a', array('href' => 'view.php?id=' . $subpage->get_course_module()->id . '&random=' . rand(1, 10000) . '&section=' . $section->id . '&move=-1&sesskey=' . sesskey() . '#section-' . ($section->id - 1), 'title' => $strmoveup));
                     $content .= html_writer::empty_tag('img', array('src' => $OUTPUT->pix_url('t/up'), 'class' => 'icon up', 'alt' => $strmoveup));
                     $content .= html_writer::end_tag('a');
                     $content .= html_writer::empty_tag('br', array());
                 }
                 if ($section->pageorder < $lastpageorder) {
                     // Add an arrow to move section down
                     $content .= html_writer::start_tag('a', array('href' => 'view.php?id=' . $subpage->get_course_module()->id . '&random=' . rand(1, 10000) . '&section=' . $section->id . '&move=1&sesskey=' . sesskey() . '#section-' . ($section->id + 1), 'title' => $strmovedown));
                     $content .= html_writer::empty_tag('img', array('src' => $OUTPUT->pix_url('t/down'), 'class' => 'icon down', 'alt' => $strmovedown));
                     $content .= html_writer::end_tag('a');
                     $content .= html_writer::empty_tag('br', array());
                 }
                 $content .= html_writer::end_tag('span');
             }
         }
         $content .= html_writer::end_tag('div');
         $content .= html_writer::start_tag('div', array('class' => 'content'));
         // Only show the section if visible and not stealthed or to users with permission
         if (($section->visible && !$section->stealth || has_capability('moodle/course:viewhiddensections', $coursecontext)) && ($editing || !$section->autohide)) {
             if ($section->stealth) {
                 $content .= html_writer::start_tag('div', array('class' => 'stealthed'));
             }
             if (!empty($section->name)) {
                 $content .= html_writer::tag('h3', format_string($section->name), array('class' => 'sectionname'));
             }
             $summary = '';
             if ($section->summary) {
                 $summarytext = file_rewrite_pluginfile_urls($section->summary, 'pluginfile.php', $coursecontext->id, 'course', 'section', $section->id);
                 $summaryformatoptions = new stdClass();
                 $summaryformatoptions->noclean = true;
                 $summaryformatoptions->overflowdiv = true;
                 $summary .= format_text($summarytext, $section->summaryformat, $summaryformatoptions);
             }
             if ($editing && has_capability('moodle/course:update', $coursecontext)) {
                 $summary .= html_writer::start_tag('a', array('href' => $CFG->wwwroot . '/course/editsection.php?id=' . $section->id . '&returnurl=' . urlencode($CFG->wwwroot . '/mod/subpage/view.php?id=' . $subpage->get_course_module()->id . '&recache=1&sesskey=' . sesskey()), 'title' => $streditsummary));
                 $summary .= html_writer::empty_tag('img', array('src' => $OUTPUT->pix_url('t/edit'), 'class' => 'icon edit', 'alt' => $streditsummary));
                 $summary .= html_writer::end_tag('a');
                 $summary .= html_writer::empty_tag('br', array());
                 $summary .= html_writer::start_tag('a', array('href' => $CFG->wwwroot . '/mod/subpage/view.php?id=' . $subpage->get_course_module()->id . '&delete=' . $section->id . '&sesskey=' . sesskey(), 'title' => $strdelete));
                 if (empty($section->sequence)) {
                     $summary .= html_writer::empty_tag('img', array('src' => $OUTPUT->pix_url('t/delete'), 'class' => 'icon delete', 'alt' => $strdelete));
                 }
                 $summary .= html_writer::end_tag('a');
                 $summary .= html_writer::empty_tag('br', array());
                 $summary .= html_writer::empty_tag('br', array());
             }
             if ($summary !== '') {
                 $content .= html_writer::tag('div', $summary, array('class' => 'summary'));
             }
             $content .= $this->render_section($subpage, $modinfo, $section, $editing, $moveitem, $mods, $modnamesused);
             if ($editing) {
                 $content .= print_section_add_menus($subpage->get_course(), $section->section, $modnames, false, true);
                 if (!empty($CFG->enablecourseajax) and $PAGE->theme->enablecourseajax) {
                     // hacky way to add list to empty section to allow drag/drop into
                     // empty sections
                     $content = str_replace('</div><div class="section_add_menus">', '</div><ul class="section img-text"><li></li></ul>' . '<div class="section_add_menus">', $content);
                 }
             }
             //now add returnto links to editing links:
             $pattern = '/mod.php\\?[A-Za-z0-9-&;=%:\\/\\-.]+/';
             $content = preg_replace_callback($pattern, 'mod_subpage_renderer::subpage_url_regex', $content);
             if ($section->stealth) {
                 $content .= html_writer::end_tag('div');
             }
         }
         $content .= html_writer::end_tag('div');
         //end of div class=content
         $content .= html_writer::end_tag('li');
     }
     $content .= html_writer::end_tag('ul');
     if ($editing) {
         $content .= $this->render_add_button($subpage);
         $content .= $this->render_bulkmove_buttons($subpage);
     }
     return $content;
 }

 echo '<td class="content">';
 if (!has_capability('moodle/course:viewhiddensections', $context) and !$thissection->visible) {
     // Hidden for students
     print_heading($weekperiod . ' (' . get_string('notavailable') . ')', null, 3, 'weekdates');
 } else {
     print_heading($weekperiod, null, 3, 'weekdates');
     echo '<div class="summary">';
     $summaryformatoptions->noclean = true;
     echo format_text($thissection->summary, FORMAT_HTML, $summaryformatoptions);
     if (isediting($course->id) && has_capability('moodle/course:update', get_context_instance(CONTEXT_COURSE, $course->id))) {
         echo ' <a title="' . $streditsummary . '" href="editsection.php?id=' . $thissection->id . '">' . '<img src="' . $CFG->pixpath . '/t/edit.gif" class="iconsmall edit" alt="' . $streditsummary . '" /></a><br /><br />';
     }
     echo '</div>';
     print_section($course, $thissection, $mods, $modnamesused);
     if (isediting($course->id)) {
         print_section_add_menus($course, $section, $modnames);
     }
 }
 echo '</td>';
 echo '<td class="right side">';
 if ($displaysection == $section) {
     echo '<a href="view.php?id=' . $course->id . '&amp;week=0#section-' . $section . '" title="' . $strshowallweeks . '">' . '<img src="' . $CFG->pixpath . '/i/all.gif" class="icon wkall" alt="' . $strshowallweeks . '" /></a><br />';
 } else {
     $strshowonlyweek = get_string("showonlyweek", "", $section);
     echo '<a href="view.php?id=' . $course->id . '&amp;week=' . $section . '" title="' . $strshowonlyweek . '">' . '<img src="' . $CFG->pixpath . '/i/one.gif" class="icon wkone" alt="' . $strshowonlyweek . '" /></a><br />';
 }
 if (isediting($course->id) && has_capability('moodle/course:update', get_context_instance(CONTEXT_COURSE, $course->id))) {
     if ($thissection->visible) {
         // Show the hide/show eye
         echo '<a href="view.php?id=' . $course->id . '&amp;hide=' . $section . '&amp;sesskey=' . $USER->sesskey . '#section-' . $section . '" title="' . $strweekhide . '">' . '<img src="' . $CFG->pixpath . '/i/hide.gif" class="icon hide" alt="' . $strweekhide . '" /></a><br />';
     } else {

 public function print_single_section_page($course, $sections, $mods, $modnames, $modnamesused, $displaysection)
 {
     global $PAGE;
     $modinfo = get_fast_modinfo($course);
     $course = course_get_format($course)->get_course();
     // Can we view the section in question?
     if (!($sectioninfo = $modinfo->get_section_info($displaysection))) {
         // This section doesn't exist
         print_error('unknowncoursesection', 'error', null, $course->fullname);
         return;
     }
     if (!$sectioninfo->uservisible) {
         if (!$course->hiddensections) {
             echo $this->start_section_list();
             echo $this->section_hidden($displaysection);
             echo $this->end_section_list();
         }
         // Can't view this section.
         return;
     }
     // Copy activity clipboard..
     echo $this->course_activity_clipboard($course, $displaysection);
     // General section if non-empty.
     $thissection = $sections[0];
     //if ($thissection->summary or $thissection->sequence or $PAGE->user_is_editing()) {
     echo $this->start_section_list();
     echo $this->section_header($thissection, $course, true, $displaysection);
     $this->print_noticeboard($course);
     if ($PAGE->user_is_editing() && is_siteadmin($USER)) {
         print_section($course, $thissection, $mods, $modnamesused, true, "100%", false, $displaysection);
         print_section_add_menus($course, 0, $modnames, false, false, $displaysection);
     }
     echo $this->section_footer();
     echo $this->end_section_list();
     //}
     // Start single-section div
     echo html_writer::start_tag('div', array('class' => 'single-section'));
     // The requested section page.
     $thissection = $modinfo->get_section_info($displaysection);
     // Title with section navigation links.
     $sectionnavlinks = $this->get_nav_links($course, $modinfo->get_section_info_all(), $displaysection);
     $sectiontitle = '';
     $sectiontitle .= html_writer::start_tag('div', array('class' => 'section-navigation header headingblock'));
     // Title attributes
     $titleattr = 'title';
     if (!$thissection->visible) {
         $titleattr .= ' dimmed_text';
     }
     $sectiontitle .= html_writer::tag('div', get_section_name($course, $displaysection), array('class' => $titleattr));
     $sectiontitle .= html_writer::end_tag('div');
     echo $sectiontitle;
     // Now the list of sections..
     echo $this->start_section_list();
     echo $this->section_header($thissection, $course, true, $displaysection);
     // Show completion help icon.
     $completioninfo = new completion_info($course);
     echo $completioninfo->display_help_icon();
     echo $this->courserenderer->course_section_cm_list($course, $thissection, $displaysection);
     echo $this->courserenderer->course_section_add_cm_control($course, $displaysection, $displaysection);
     echo $this->section_footer();
     echo $this->end_section_list();
     // Display section bottom navigation.
     $sectionbottomnav = '';
     $sectionbottomnav .= html_writer::start_tag('nav', array('id' => 'section_footer', 'class' => 'clearfix'));
     $sectionbottomnav .= $sectionnavlinks['previous'];
     $sectionbottomnav .= $sectionnavlinks['next'];
     // $sectionbottomnav .= html_writer::tag('div', $this->section_nav_selection($course, $sections, $displaysection), array('class' => 'mdl-align'));
     $sectionbottomnav .= html_writer::end_tag('nav');
     echo $sectionbottomnav;
     // Close single-section div.
     echo html_writer::end_tag('div');
 }

 /**
  * Output the html for a multiple section page
  *
  * @param stdClass $course The course entry from DB
  * @param array $sections (argument not used)
  * @param array $mods (argument not used)
  * @param array $modnames (argument not used)
  * @param array $modnamesused (argument not used)
  */
 public function print_multiple_section_page($course, $sections, $mods, $modnames, $modnamesused)
 {
     global $PAGE;
     $modinfo = get_fast_modinfo($course);
     $course = course_get_format($course)->get_course();
     $context = context_course::instance($course->id);
     // Title with completion help icon.
     $completioninfo = new completion_info($course);
     echo $completioninfo->display_help_icon();
     echo $this->output->heading($this->page_title(), 2, 'accesshide');
     // Copy activity clipboard..
     echo $this->course_activity_clipboard($course, 0);
     // Now the list of sections..
     echo $this->start_section_list();
     foreach ($modinfo->get_section_info_all() as $section => $thissection) {
         if ($section == 0) {
             // 0-section is displayed a little different then the others
             if ($thissection->summary or !empty($modinfo->sections[0]) or $PAGE->user_is_editing()) {
                 echo $this->section_header($thissection, $course, false, 0);
                 print_section($course, $thissection, null, null, true, "100%", false, 0);
                 if ($PAGE->user_is_editing()) {
                     print_section_add_menus($course, 0, null, false, false, 0);
                 }
                 echo $this->section_footer();
             }
             continue;
         }
         if ($section > $course->numsections) {
             // activities inside this section are 'orphaned', this section will be printed as 'stealth' below
             continue;
         }
         // Show the section if the user is permitted to access it, OR if it's not available
         // but showavailability is turned on
         $showsection = $thissection->uservisible || $thissection->visible && !$thissection->available && $thissection->showavailability;
         if (!$showsection) {
             // Hidden section message is overridden by 'unavailable' control
             // (showavailability option).
             if (!$course->hiddensections && $thissection->available) {
                 if ($course->coursedisplay == COURSE_DISPLAY_MULTIPAGE) {
                     echo $this->section_summary($thissection, $course, $mods);
                 } else {
                     echo $this->section_hidden($section);
                 }
             }
             continue;
         }
         if (!$PAGE->user_is_editing() && $course->coursedisplay == COURSE_DISPLAY_MULTIPAGE) {
             // Display section summary only.
             echo $this->section_summary($thissection, $course, null);
         } else {
             echo $this->section_header($thissection, $course, false, 0);
             if ($thissection->uservisible) {
                 print_section($course, $thissection, null, null, true, "100%", false, 0);
                 if ($PAGE->user_is_editing()) {
                     print_section_add_menus($course, $section, null, false, false, 0);
                 }
             }
             echo $this->section_footer();
         }
     }
     if ($PAGE->user_is_editing() and has_capability('moodle/course:update', $context)) {
         // Print stealth sections if present.
         foreach ($modinfo->get_section_info_all() as $section => $thissection) {
             if ($section <= $course->numsections or empty($modinfo->sections[$section])) {
                 // this is not stealth section or it is empty
                 continue;
             }
             echo $this->stealth_section_header($section);
             print_section($course, $thissection, null, null, true, "100%", false, 0);
             echo $this->stealth_section_footer();
         }
         echo $this->end_section_list();
         echo html_writer::start_tag('div', array('id' => 'changenumsections', 'class' => 'mdl-right'));
         // Increase number of sections.
         $straddsection = get_string('increasesections', 'moodle');
         $url = new moodle_url('/course/changenumsections.php', array('courseid' => $course->id, 'increase' => true, 'sesskey' => sesskey()));
         $icon = $this->output->pix_icon('t/switch_plus', $straddsection);
         echo html_writer::link($url, $icon . get_accesshide($straddsection), array('class' => 'increase-sections'));
         if ($course->numsections > 0) {
             // Reduce number of sections sections.
             $strremovesection = get_string('reducesections', 'moodle');
             $url = new moodle_url('/course/changenumsections.php', array('courseid' => $course->id, 'increase' => false, 'sesskey' => sesskey()));
             $icon = $this->output->pix_icon('t/switch_minus', $strremovesection);
             echo html_writer::link($url, $icon . get_accesshide($strremovesection), array('class' => 'reduce-sections'));
         }
         echo html_writer::end_tag('div');
     } else {
         echo $this->end_section_list();
     }
 }

//.........这里部分代码省略.........
        $section->course = $course->id;
        $section->section = $sectnum;
        $section->summary = $category->name;
        $section->sequence = '';
        $section->visible = 1;
        if (!($section->id = insert_record('course_sections', $section))) {
            error('Could not create section for category ' . $category->name);
        }
    }
    if (!empty($section) || $isediting) {
        get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
    }
    $groupbuttons = $course->groupmode;
    $groupbuttonslink = !$course->groupmodeforce;
    if ($ismoving) {
        $strmovehere = get_string('movehere');
        $strmovefull = strip_tags(get_string('movefull', '', "'{$USER->activitycopyname}'"));
        $strcancel = get_string('cancel');
        $stractivityclipboard = $USER->activitycopyname;
    }
    $modinfo = unserialize($course->modinfo);
    $editbuttons = '';
    print_simple_box_start("center", "100%", '', 5, "coursebox");
    echo '<table class="topics" width="100%">';
    echo '<tr id="section-' . $section . '" class="section main">';
    echo '<td class="content">';
    print_heading_block('<div align="center">' . $category->name . '</div>');
    echo '<table class="section" width="100%">';
    if (!empty($section) && !empty($section->sequence)) {
        $sectionmods = explode(',', $section->sequence);
        foreach ($sectionmods as $modnumber) {
            if (empty($mods[$modnumber])) {
                continue;
            }
            $mod = $mods[$modnumber];
            if ($isediting && !$ismoving) {
                if ($groupbuttons) {
                    if (!($mod->groupmodelink = $groupbuttonslink)) {
                        $mod->groupmode = $course->groupmode;
                    }
                } else {
                    $mod->groupmode = false;
                }
                $editbuttons = '<br />' . make_editing_buttons($mod, true, true);
            } else {
                $editbuttons = '';
            }
            if ($mod->visible || $isteacher) {
                echo '<tr><td class="activity ' . $mod->modname . '">';
                if ($ismoving) {
                    if ($mod->id == $USER->activitycopy) {
                        continue;
                    }
                    echo '<a title="' . $strmovefull . '" href="' . $CFG->wwwroot . '/course/mod.php?moveto=' . $mod->id . '&amp;sesskey=' . $USER->sesskey . '">' . '<img height="16" width="80" src="' . $CFG->pixpath . '/movehere.gif" alt="' . $strmovehere . '" border="0" /></a>';
                }
                $instancename = urldecode($modinfo[$modnumber]->name);
                $instancename = format_string($instancename, true, $course->id);
                $linkcss = $mod->visible ? '' : ' class="dimmed" ';
                if (!empty($modinfo[$modnumber]->extra)) {
                    $extra = urldecode($modinfo[$modnumber]->extra);
                } else {
                    $extra = '';
                }
                if (!empty($modinfo[$modnumber]->icon)) {
                    $icon = $CFG->pixpath . '/' . urldecode($modinfo[$modnumber]->icon);
                } else {
                    $icon = $CFG->modpixpath . '/' . $mod->modname . '/icon.gif';
                }
                if ($mod->modname == 'label') {
                    echo format_text($extra, FORMAT_HTML) . $editbuttons;
                } else {
                    echo '<img src="' . $icon . '" height="16" width="16" alt="' . $mod->modfullname . '" /> ' . '<a title="' . $mod->modfullname . '" ' . $linkcss . ' ' . $extra . ' href="' . $CFG->wwwroot . '/mod/' . $mod->modname . '/view.php?id=' . $mod->id . '">' . $instancename . '</a>' . $editbuttons;
                }
                echo "</td>";
                echo "</tr>";
            }
        }
    } else {
        echo "<tr><td></td></tr>";
        // needed for XHTML compatibility
    }
    if ($ismoving) {
        echo '<tr><td><a title="' . $strmovefull . '" href="' . $CFG->wwwroot . '/course/mod.php?movetosection=' . $section->id . '&amp;sesskey=' . $USER->sesskey . '">' . '<img height="16" width="80" src="' . $CFG->pixpath . '/movehere.gif" alt="' . $strmovehere . '" border="0" /></a></td></tr>';
    }
    if ($isediting && $modnames) {
        echo '<tr><td>';
        print_section_add_menus($course, $section->section, $modnames, true);
        echo '</td></tr>';
    }
    echo "</table>\n\n";
    echo '</td></tr></table>';
    print_simple_box_end();
    if (empty($courses)) {
        print_heading(FN_translate_course_string(get_string("nocoursesyet")));
    } else {
        foreach ($courses as $course) {
            print_course($course);
        }
    }
}

 /**
  * Output the html for a multiple section page
  *
  * @param stdClass $course The course entry from DB
  * @param array $sections The course_sections entries from the DB
  * @param array $mods used for print_section()
  * @param array $modnames used for print_section()
  * @param array $modnamesused used for print_section()
  */
 public function print_multiple_section_page($course, $sections, $mods, $modnames, $modnamesused)
 {
     global $PAGE;
     $context = context_course::instance($course->id);
     // Title with completion help icon.
     $completioninfo = new completion_info($course);
     echo $completioninfo->display_help_icon();
     echo $this->output->heading($this->page_title(), 2, 'accesshide');
     // Copy activity clipboard..
     echo $this->course_activity_clipboard($course);
     // Now the list of sections..
     echo $this->start_section_list();
     // General section if non-empty.
     $thissection = $sections[0];
     unset($sections[0]);
     if ($thissection->summary or $thissection->sequence or $PAGE->user_is_editing()) {
         echo $this->section_header($thissection, $course, true);
         print_section($course, $thissection, $mods, $modnamesused, true);
         if ($PAGE->user_is_editing()) {
             print_section_add_menus($course, 0, $modnames);
         }
         echo $this->section_footer();
     }
     $canviewhidden = has_capability('moodle/course:viewhiddensections', $context);
     for ($section = 1; $section <= $course->numsections; $section++) {
         if (!empty($sections[$section])) {
             $thissection = $sections[$section];
         } else {
             // This will create a course section if it doesn't exist..
             $thissection = get_course_section($section, $course->id);
             // The returned section is only a bare database object rather than
             // a section_info object - we will need at least the uservisible
             // field in it.
             $thissection->uservisible = true;
             $thissection->availableinfo = null;
             $thissection->showavailability = 0;
         }
         // Show the section if the user is permitted to access it, OR if it's not available
         // but showavailability is turned on
         $showsection = $thissection->uservisible || $thissection->visible && !$thissection->available && $thissection->showavailability;
         if (!$showsection) {
             // Hidden section message is overridden by 'unavailable' control
             // (showavailability option).
             if (!$course->hiddensections && $thissection->available) {
                 echo $this->section_hidden($section);
             }
             unset($sections[$section]);
             continue;
         }
         if (!$PAGE->user_is_editing() && $course->coursedisplay == COURSE_DISPLAY_MULTIPAGE) {
             // Display section summary only.
             echo $this->section_summary($thissection, $course);
         } else {
             echo $this->section_header($thissection, $course, false);
             if ($thissection->uservisible) {
                 print_section($course, $thissection, $mods, $modnamesused);
                 if ($PAGE->user_is_editing()) {
                     print_section_add_menus($course, $section, $modnames);
                 }
             }
             echo $this->section_footer();
         }
         unset($sections[$section]);
     }
     if ($PAGE->user_is_editing() and has_capability('moodle/course:update', $context)) {
         // Print stealth sections if present.
         $modinfo = get_fast_modinfo($course);
         foreach ($sections as $section => $thissection) {
             if (empty($modinfo->sections[$section])) {
                 continue;
             }
             echo $this->stealth_section_header($section);
             print_section($course, $thissection, $mods, $modnamesused);
             echo $this->stealth_section_footer();
         }
         echo $this->end_section_list();
         echo html_writer::start_tag('div', array('id' => 'changenumsections', 'class' => 'mdl-right'));
         // Increase number of sections.
         $straddsection = get_string('increasesections', 'moodle');
         $url = new moodle_url('/course/changenumsections.php', array('courseid' => $course->id, 'increase' => true, 'sesskey' => sesskey()));
         $icon = $this->output->pix_icon('t/switch_plus', $straddsection);
         echo html_writer::link($url, $icon . get_accesshide($straddsection), array('class' => 'increase-sections'));
         if ($course->numsections > 0) {
             // Reduce number of sections sections.
             $strremovesection = get_string('reducesections', 'moodle');
             $url = new moodle_url('/course/changenumsections.php', array('courseid' => $course->id, 'increase' => false, 'sesskey' => sesskey()));
             $icon = $this->output->pix_icon('t/switch_minus', $strremovesection);
             echo html_writer::link($url, $icon . get_accesshide($strremovesection), array('class' => 'reduce-sections'));
         }
         echo html_writer::end_tag('div');
     } else {
//.........这里部分代码省略.........

 function get_content()
 {
     global $USER, $CFG;
     if ($this->content !== NULL) {
         return $this->content;
     }
     $this->content = new stdClass();
     $this->content->items = array();
     $this->content->icons = array();
     $this->content->footer = '';
     if (empty($this->instance)) {
         return $this->content;
     }
     $course = get_record('course', 'id', $this->instance->pageid);
     $context = get_context_instance(CONTEXT_COURSE, $course->id);
     $isediting = isediting($this->instance->pageid) && has_capability('moodle/course:manageactivities', $context);
     $ismoving = ismoving($this->instance->pageid);
     $sections = get_all_sections($this->instance->pageid);
     if (!empty($sections) && isset($sections[0])) {
         $section = $sections[0];
     }
     if (!empty($section) || $isediting) {
         get_all_mods($this->instance->pageid, $mods, $modnames, $modnamesplural, $modnamesused);
     }
     $groupbuttons = $course->groupmode;
     $groupbuttonslink = !$course->groupmodeforce;
     if ($ismoving) {
         $strmovehere = get_string('movehere');
         $strmovefull = strip_tags(get_string('movefull', '', "'{$USER->activitycopyname}'"));
         $strcancel = get_string('cancel');
         $stractivityclipboard = $USER->activitycopyname;
     }
     /// Casting $course->modinfo to string prevents one notice when the field is null
     $modinfo = unserialize((string) $course->modinfo);
     $editbuttons = '';
     if ($ismoving) {
         $this->content->icons[] = '<img src="' . $CFG->pixpath . '/t/move.gif" class="iconsmall" alt="" />';
         $this->content->items[] = $USER->activitycopyname . '&nbsp;(<a href="' . $CFG->wwwroot . '/course/mod.php?cancelcopy=true&amp;sesskey=' . $USER->sesskey . '">' . $strcancel . '</a>)';
     }
     if (!empty($section) && !empty($section->sequence)) {
         $sectionmods = explode(',', $section->sequence);
         foreach ($sectionmods as $modnumber) {
             if (empty($mods[$modnumber])) {
                 continue;
             }
             $mod = $mods[$modnumber];
             if ($isediting && !$ismoving) {
                 if ($groupbuttons) {
                     if (!($mod->groupmodelink = $groupbuttonslink)) {
                         $mod->groupmode = $course->groupmode;
                     }
                 } else {
                     $mod->groupmode = false;
                 }
                 $editbuttons = '<div class="buttons">' . make_editing_buttons($mod, true, true) . '</div>';
             } else {
                 $editbuttons = '';
             }
             if ($mod->visible || has_capability('moodle/course:viewhiddenactivities', $context)) {
                 if ($ismoving) {
                     if ($mod->id == $USER->activitycopy) {
                         continue;
                     }
                     $this->content->items[] = '<a title="' . $strmovefull . '" href="' . $CFG->wwwroot . '/course/mod.php?moveto=' . $mod->id . '&amp;sesskey=' . $USER->sesskey . '">' . '<img style="height:16px; width:80px; border:0px" src="' . $CFG->pixpath . '/movehere.gif" alt="' . $strmovehere . '" /></a>';
                     $this->content->icons[] = '';
                 }
                 $instancename = urldecode($modinfo[$modnumber]->name);
                 $instancename = format_string($instancename, true, $this->instance->pageid);
                 $linkcss = $mod->visible ? '' : ' class="dimmed" ';
                 if (!empty($modinfo[$modnumber]->extra)) {
                     $extra = urldecode($modinfo[$modnumber]->extra);
                 } else {
                     $extra = '';
                 }
                 if (!empty($modinfo[$modnumber]->icon)) {
                     $icon = $CFG->pixpath . '/' . urldecode($modinfo[$modnumber]->icon);
                 } else {
                     $icon = $CFG->modpixpath . '/' . $mod->modname . '/icon.gif';
                 }
                 if ($mod->modname == 'label') {
                     $this->content->items[] = format_text($extra, FORMAT_HTML) . $editbuttons;
                     $this->content->icons[] = '';
                 } else {
                     $this->content->items[] = '<a title="' . $mod->modfullname . '" ' . $linkcss . ' ' . $extra . ' href="' . $CFG->wwwroot . '/mod/' . $mod->modname . '/view.php?id=' . $mod->id . '">' . $instancename . '</a>' . $editbuttons;
                     //Accessibility: incidental image - should be empty Alt text
                     $this->content->icons[] = '<img src="' . $icon . '" class="icon" alt="" />';
                 }
             }
         }
     }
     if ($ismoving) {
         $this->content->items[] = '<a title="' . $strmovefull . '" href="' . $CFG->wwwroot . '/course/mod.php?movetosection=' . $section->id . '&amp;sesskey=' . $USER->sesskey . '">' . '<img style="height:16px; width:80px; border:0px" src="' . $CFG->pixpath . '/movehere.gif" alt="' . $strmovehere . '" /></a>';
         $this->content->icons[] = '';
     }
     if ($isediting && $modnames) {
         $this->content->footer = print_section_add_menus($course, 0, $modnames, true, true);
     } else {
         $this->content->footer = '';
     }
     return $this->content;
//.........这里部分代码省略.........

/**
 * Called from {@link page_print_position()} and it is
 * supposed to print the front page settings in the
 * center column for the site course and only for
 * the default page (EG: the landing page).
 *
 * @return boolean
 **/
function page_frontpage_settings()
{
    global $CFG, $SESSION, $SITE, $PAGE, $COURSE;
    // Cheap check first - course ID
    if ($COURSE->id != SITEID) {
        return false;
    }
    // More expensive check - make sure we are viewing default page
    $default = page_get_default_page();
    $current = $PAGE->get_formatpage();
    if (empty($default->id) or empty($current->id) or $default->id != $current->id) {
        return false;
    }
    $editing = $PAGE->user_is_editing();
    /// START COPY/PASTE FROM INDEX.PHP
    print_container_start();
    /// Print Section
    if ($SITE->numsections > 0) {
        if (!($section = get_record('course_sections', 'course', $SITE->id, 'section', 1))) {
            delete_records('course_sections', 'course', $SITE->id, 'section', 1);
            // Just in case
            $section->course = $SITE->id;
            $section->section = 1;
            $section->summary = '';
            $section->sequence = '';
            $section->visible = 1;
            $section->id = insert_record('course_sections', $section);
        }
        if (!empty($section->sequence) or !empty($section->summary) or $editing) {
            print_box_start('generalbox sitetopic');
            /// If currently moving a file then show the current clipboard
            if (ismoving($SITE->id)) {
                $stractivityclipboard = strip_tags(get_string('activityclipboard', '', addslashes($USER->activitycopyname)));
                echo '<p><font size="2">';
                echo "{$stractivityclipboard}&nbsp;&nbsp;(<a href=\"course/mod.php?cancelcopy=true&amp;sesskey={$USER->sesskey}\">" . get_string('cancel') . '</a>)';
                echo '</font></p>';
            }
            $options = NULL;
            $options->noclean = true;
            echo format_text($section->summary, FORMAT_HTML, $options);
            if ($editing) {
                $streditsummary = get_string('editsummary');
                echo "<a title=\"{$streditsummary}\" " . " href=\"course/editsection.php?id={$section->id}\"><img src=\"{$CFG->pixpath}/t/edit.gif\" " . " class=\"iconsmall\" alt=\"{$streditsummary}\" /></a><br /><br />";
            }
            get_all_mods($SITE->id, $mods, $modnames, $modnamesplural, $modnamesused);
            print_section($SITE, $section, $mods, $modnamesused, true);
            if ($editing) {
                print_section_add_menus($SITE, $section->section, $modnames);
            }
            print_box_end();
        }
    }
    if (isloggedin() and !isguest() and isset($CFG->frontpageloggedin)) {
        $frontpagelayout = $CFG->frontpageloggedin;
    } else {
        $frontpagelayout = $CFG->frontpage;
    }
    foreach (explode(',', $frontpagelayout) as $v) {
        switch ($v) {
            /// Display the main part of the front page.
            case FRONTPAGENEWS:
                if ($SITE->newsitems) {
                    // Print forums only when needed
                    require_once $CFG->dirroot . '/mod/forum/lib.php';
                    if (!($newsforum = forum_get_course_forum($SITE->id, 'news'))) {
                        error('Could not find or create a main news forum for the site');
                    }
                    if (!empty($USER->id)) {
                        $SESSION->fromdiscussion = $CFG->wwwroot;
                        if (forum_is_subscribed($USER->id, $newsforum)) {
                            $subtext = get_string('unsubscribe', 'forum');
                        } else {
                            $subtext = get_string('subscribe', 'forum');
                        }
                        print_heading_block($newsforum->name);
                        echo '<div class="subscribelink"><a href="mod/forum/subscribe.php?id=' . $newsforum->id . '">' . $subtext . '</a></div>';
                    } else {
                        print_heading_block($newsforum->name);
                    }
                    forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'plain', 'p.modified DESC');
                }
                break;
            case FRONTPAGECOURSELIST:
                if (isloggedin() and !has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) and !isguest() and empty($CFG->disablemycourses)) {
                    print_heading_block(get_string('mycourses'));
                    print_my_moodle();
                } else {
                    if (!has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) and !isguest() or count_records('course') <= FRONTPAGE