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<?php // $Id$
      // Display the whole course as "topics" made of of modules
      // In fact, this is very similar to the "weeks" format, in that
      // each "topic" is actually a week. The main difference is that
      // the dates aren't printed - it's just an aesthetic thing for
      // courses that aren't so rigidly defined by time.
      // Included from "view.php"
      

    require_once($CFG->dirroot.'/mod/forum/lib.php');
    require_once($CFG->libdir.'/ajax/ajaxlib.php');
  
    
    $topic = optional_param('topic', -1, PARAM_INT);

    
    // Bounds for block widths
    define('BLOCK_L_MIN_WIDTH', 100);
    define('BLOCK_L_MAX_WIDTH', 210);
    define('BLOCK_R_MIN_WIDTH', 100);
    define('BLOCK_R_MAX_WIDTH', 210);

    $preferred_width_left = bounded_number(BLOCK_L_MIN_WIDTH, blocks_preferred_width($pageblocks[BLOCK_POS_LEFT]),
                                            BLOCK_L_MAX_WIDTH);
    $preferred_width_right = bounded_number(BLOCK_R_MIN_WIDTH, blocks_preferred_width($pageblocks[BLOCK_POS_RIGHT]),
                                            BLOCK_R_MAX_WIDTH);

    if ($topic != -1) {
        $displaysection = course_set_display($course->id, $topic);
    } else {
        if (isset($USER->display[$course->id])) { // for admins, mostly
            $displaysection = $USER->display[$course->id];
        } else {
            $displaysection = course_set_display($course->id, 0);
        }
    }

    $context = get_context_instance(CONTEXT_COURSE, $course->id);

    if (($marker >=0) && has_capability('moodle/course:setcurrentsection', $context) && confirm_sesskey()) {
        $course->marker = $marker;
        if (! set_field("course", "marker", $marker, "id", $course->id)) {
            error("Could not mark that topic for this course");
        }
    }

    $streditsummary = get_string('editsummary');
    $stradd = get_string('add');
    $stractivities = get_string('activities');
    $strshowalltopics = get_string('showalltopics');
    $strtopic = get_string('topic');
    $strgroups = get_string('groups');
    $strgroupmy = get_string('groupmy');
    $editing = $PAGE->user_is_editing();

    if ($editing) {
        $strstudents = moodle_strtolower($course->students);
        $strtopichide = get_string('topichide', '', $strstudents);
        $strtopicshow = get_string('topicshow', '', $strstudents);
        $strmarkthistopic = get_string('markthistopic');
        $strmarkedthistopic = get_string('markedthistopic');
        $strmoveup = get_string('moveup');
        $strmovedown = get_string('movedown');
    }


/// Layout the whole page as three big columns.
    echo '<table id="layout-table" cellspacing="0"><tr>';

/// The left column ...

    if (blocks_have_content($pageblocks, BLOCK_POS_LEFT) || $editing) {
        echo '<td width="'.$preferred_width_left.'" id="left-column">';
        blocks_print_group($PAGE, $pageblocks, BLOCK_POS_LEFT);
        echo '</td>';
    }

/// Start main column
    echo '<td id="middle-column">';

    print_heading_block(get_string('topicoutline'), 'outline');

    echo '<table class="topics" width="100%">';

/// If currently moving a file then show the current clipboard
    if (ismoving($course->id)) {
        $stractivityclipboard = strip_tags(get_string('activityclipboard', '', addslashes($USER->activitycopyname)));
        $strcancel= get_string('cancel');
        echo '<tr class="clipboard">';
        echo '<td colspan="3">';
        echo $stractivityclipboard.'&nbsp;&nbsp;(<a href="mod.php?cancelcopy=true&amp;sesskey='.$USER->sesskey.'">'.$strcancel.'</a>)';
        echo '</td>';
        echo '</tr>';
    }

/// Print Section 0

    $section = 0;
    $thissection = $sections[$section];

    if ($thissection->summary or $thissection->sequence or isediting($course->id)) {
        echo '<tr id="section-0" class="section main">';
        echo '<td class="left side">&nbsp;</td>';
        echo '<td class="content">';
        
        echo '<div class="summary">';
        $summaryformatoptions->noclean = true;
        echo format_text($thissection->summary, FORMAT_HTML, $summaryformatoptions);

        //Accessibility: added Alt, filled empty Alt-link text.
        if (isediting($course->id)) {
            echo '<a title="'.$streditsummary.'" '.
                 ' href="editsection.php?id='.$thissection->id.'"><img src="'.$CFG->pixpath.'/t/edit.gif" '.
                 ' height="11" width="11" border="0" 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">&nbsp;</td>';
        echo '</tr>';
        echo '<tr class="section separator"><td colspan="3" class="spacer"></td></tr>';
    }


/// Now all the normal modules by topic
/// Everything below uses "section" terminology - each "section" is a topic.

    $timenow = time();
    $section = 1;
    $sectionmenu = array();

    while ($section <= $course->numsections) {

        if (!empty($sections[$section])) {
            $thissection = $sections[$section];

        } else {
            unset($thissection);
            $thissection->course = $course->id; // Create a new section structure
            $thissection->section = $section;
            $thissection->summary = '';
            $thissection->visible = 1;
            if (!$thissection->id = insert_record('course_sections', $thissection)) {
                notify('Error inserting new topic!');
            }
        }

        $showsection = (has_capability('moodle/course:viewhiddensections', $context) or $thissection->visible or !$course->hiddensections);

        if (!empty($displaysection) and $displaysection != $section) {
            if ($showsection) {
                $strsummary = strip_tags(format_string($thissection->summary,true));
                if (strlen($strsummary) < 57) {
                    $strsummary = ' - '.$strsummary;
                } else {
                    $strsummary = ' - '.substr($strsummary, 0, 60).'...';
                }
                $sectionmenu['topic='.$section] = s($section.$strsummary);
            }
            $section++;
            continue;
        }

        if ($showsection) {

            $currenttopic = ($course->marker == $section);

            $currenttext = '';
            if (!$thissection->visible) {
                $sectionstyle = ' hidden';
            } else if ($currenttopic) {
                $sectionstyle = ' current';
                $currenttext = get_accesshide(get_string('currenttopic','access'));
            } else {
                $sectionstyle = '';
            }

            echo '<tr id="section-'.$section.'" class="section main'.$sectionstyle.'">';
            echo '<td class="left side">'.$currenttext.$section.'</td>';

            echo '<td class="content">';
            if (!has_capability('moodle/course:viewhiddensections', $context) and !$thissection->visible) { // Hidden for students
                echo get_string('notavailable');
            } else {
                echo '<div class="summary">';
                $summaryformatoptions->noclean = true;
                echo format_text($thissection->summary, FORMAT_HTML, $summaryformatoptions);

                if (isediting($course->id)) {
                    echo ' <a title="'.$streditsummary.'" href="editsection.php?id='.$thissection->id.'">'.
                         '<img src="'.$CFG->pixpath.'/t/edit.gif" border="0" height="11" width="11" 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 == $section) { // Show the zoom boxes
                echo '<a href="view.php?id='.$course->id.'&amp;topic=0#section-'.$section.'" title="'.$strshowalltopics.'">'.
                     '<img src="'.$CFG->pixpath.'/i/all.gif" height="25" width="16" border="0" alt="'.$strshowalltopics.'" /></a><br />';
            } else {
                $strshowonlytopic = get_string('showonlytopic', '', $section);
                echo '<a href="view.php?id='.$course->id.'&amp;topic='.$section.'" title="'.$strshowonlytopic.'">'.
                     '<img src="'.$CFG->pixpath.'/i/one.gif" height="16" width="16" border="0" alt="'.$strshowonlytopic.'" /></a><br />';
            }

            if (isediting($course->id)) {
                if ($course->marker == $section) { // Show the "light globe" on/off
                    echo '<a href="view.php?id='.$course->id.'&amp;marker=0&amp;sesskey='.$USER->sesskey.'#section-'.$section.'" title="'.$strmarkedthistopic.'">'.
                         '<img src="'.$CFG->pixpath.'/i/marked.gif" vspace="3" height="16" width="16" border="0" alt="'.$strmarkedthistopic.'" /></a><br />';
                } else {
                    echo '<a href="view.php?id='.$course->id.'&amp;marker='.$section.'&amp;sesskey='.$USER->sesskey.'#section-'.$section.'" title="'.$strmarkthistopic.'">'.
                         '<img src="'.$CFG->pixpath.'/i/marker.gif" vspace="3" height="16" width="16" border="0" alt="'.$strmarkthistopic.'" /></a><br />';
                }

                if ($thissection->visible) { // Show the hide/show eye
                    echo '<a href="view.php?id='.$course->id.'&amp;hide='.$section.'&amp;sesskey='.$USER->sesskey.'#section-'.$section.'" title="'.$strtopichide.'">'.
                         '<img src="'.$CFG->pixpath.'/i/hide.gif" vspace="3" height="16" width="16" border="0" alt="'.$strtopichide.'" /></a><br />';
                } else {
                    echo '<a href="view.php?id='.$course->id.'&amp;show='.$section.'&amp;sesskey='.$USER->sesskey.'#section-'.$section.'" title="'.$strtopicshow.'">'.
                         '<img src="'.$CFG->pixpath.'/i/show.gif" vspace="3" height="16" width="16" border="0" alt="'.$strtopicshow.'" /></a><br />';
                }

                if ($section > 1) { // Add a arrow to move section up
                    echo '<a href="view.php?id='.$course->id.'&amp;random='.rand(1,10000).'&amp;section='.$section.'&amp;move=-1&amp;sesskey='.$USER->sesskey.'#section-'.($section-1).'" title="'.$strmoveup.'">'.
                         '<img src="'.$CFG->pixpath.'/t/up.gif" vspace="3" height="11" width="11" border="0" alt="'.$strmoveup.'" /></a><br />';
                }

                if ($section < $course->numsections) { // Add a arrow to move section down
                    echo '<a href="view.php?id='.$course->id.'&amp;random='.rand(1,10000).'&amp;section='.$section.'&amp;move=1&amp;sesskey='.$USER->sesskey.'#section-'.($section+1).'" title="'.$strmovedown.'">'.
                         '<img src="'.$CFG->pixpath.'/t/down.gif" vspace="3" height="11" width="11" border="0" alt="'.$strmovedown.'" /></a><br />';
                }

            }

            echo '</td></tr>';
            echo '<tr class="section separator"><td colspan="3" class="spacer"></td></tr>';
        }

        $section++;
    }
    echo '</table>';

    if (!empty($sectionmenu)) {
        echo '<div align="center" class="jumpmenu">';
        echo popup_form($CFG->wwwroot.'/course/view.php?id='.$course->id.'&amp;', $sectionmenu,
                   'sectionmenu', '', get_string('jumpto'), '', '', true);
        echo '</div>';
    }


    echo '</td>';

    // The right column
    if (blocks_have_content($pageblocks, BLOCK_POS_RIGHT) || $editing) {
        echo '<td width="'.$preferred_width_right.'" id="right-column">';
        blocks_print_group($PAGE, $pageblocks, BLOCK_POS_RIGHT);
        echo '</td>';
    }

    echo '</tr></table>';
    
?>
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