--- loncom/interface/lonfeedback.pm 2007/08/06 19:55:51 1.248 +++ loncom/interface/lonfeedback.pm 2010/09/21 04:56:15 1.273.4.10 @@ -1,7 +1,7 @@ # The LearningOnline Network # Feedback # -# $Id: lonfeedback.pm,v 1.248 2007/08/06 19:55:51 albertel Exp $ +# $Id: lonfeedback.pm,v 1.273.4.10 2010/09/21 04:56:15 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -48,13 +48,22 @@ use LONCAPA; sub discussion_open { my ($status,$symb)=@_; - if ($env{'request.role.adv'}) { return 0; } +# Advanced roles can always discuss + if ($env{'request.role.adv'}) { return 1; } +# Get discussion closing date + my $close=&Apache::lonnet::EXT('resource.0.discussend',$symb); +# If it is defined and in the future, the instructor wants this discussion to be open + if (defined($close) && $close ne '' && $close > time) { + return 1; + } +# It was not explicitly open, check if the problem is available. +# If the problem is not available, close the discussion if (defined($status) && !($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'OPEN')) { return 0; } - my $close=&Apache::lonnet::EXT('resource.0.discussend',$symb); +# The problem is available, but check if the instructor explictly closed discussion if (defined($close) && $close ne '' && $close < time) { return 0; } @@ -91,7 +100,7 @@ sub list_discussion { if (not &discussion_visible($status)) { if ($mode ne 'board') { &Apache::lonenc::check_encrypt(\$ressymb); - return &send_message_link($ressymb); + return '
'.&send_message_link($ressymb); } } if ($group ne '' && $mode eq 'board') { @@ -110,7 +119,7 @@ sub list_discussion { return $blocktext; } - my @bgcols = ("#cccccc","#eeeeee"); + my @bgcols = ("LC_disc_old_item","LC_disc_new_item"); my $discussiononly=0; if ($mode eq 'board') { $discussiononly=1; } unless ($env{'request.course.id'}) { return ''; } @@ -169,6 +178,8 @@ sub list_discussion { my $cdom = $env{'course.'.$cid.'.domain'}; my $cnum = $env{'course.'.$cid.'.num'}; + my $crstype = &Apache::loncommon::course_type(); + # Get information about students and non-students in course for filtering display of posts my %roleshash = (); @@ -352,10 +363,10 @@ sub list_discussion { $togglink = 'toggoff'; } - $chglink .= '&changes='.$displinkA.'_'.$displinkB.'_'.$marklink.'_'.$togglink; + $chglink .= '&changes='.$displinkA.'_'.$displinkB.'_'.$marklink.'_'.$togglink; if ($newpostsflag) { - $chglink .= '&previous='.$prevread; + $chglink .= '&previous='.$prevread; } $chglink.=&group_args($group); @@ -398,8 +409,8 @@ sub list_discussion { my $manifestfilename = $tempexport.$manifest; if ($manifestfile = Apache::File->new('>'.$manifestfilename)) { $manifestok=1; - print $manifestfile qq| - + print $manifestfile qq| + |; - $discussion.='
'; + $discussion.=''. + "\n".'
'; $discussion .= &action_links_bar($colspan,$ressymb,$visible, $newpostsflag,$group, $prevread,$markondisp); @@ -445,7 +457,7 @@ imscp_v1p1.xsd http://www.imsglobal.org/ $discussion.="\n".''; } @@ -557,14 +569,14 @@ imscp_v1p1.xsd http://www.imsglobal.org/ my $colspan=$maxdepth+1; $discussion .= < -
'. ''.&mt('Show all posts').' '.&mt('to display').' '. @@ -525,11 +537,11 @@ imscp_v1p1.xsd http://www.imsglobal.org/ print $manifestfile "\n". ''. - ''.$imsitems{$alldiscussion{$post}}{'title'}.''; + ''.$imsitems{$alldiscussion{$post}}{'title'}.''; $imsresources .= "\n". ''."\n". ''."\n". - $imsfiles{$alldiscussion{$post}}{$imsitems{$alldiscussion{$post}}{'currversion'}}."\n". + $imsfiles{$alldiscussion{$post}}{$imsitems{$alldiscussion{$post}}{'currversion'}}.''."\n". ''; } my $postingfile; @@ -547,7 +559,7 @@ imscp_v1p1.xsd http://www.imsglobal.org/ } $copyresult.=&replicate_attachments($imsitems{$alldiscussion{$post}}{'allattachments'},$tempexport); } else { - $discussion.=''. $discussionitems[$alldiscussion{$post}]. '
- +
'. - ''; + my $discussion = ' - END $r->print(&Apache::loncommon::end_data_table_row()); @@ -1959,8 +1986,9 @@ END $r->print(<$lt{'dotm'} - + END + my $save = &mt('Save'); $r->print(&Apache::loncommon::end_data_table_row()); $r->print(&Apache::loncommon::end_data_table()); $r->print(< - - - + + + - + END if (exists($env{'form.group'})) { $r->print(''); @@ -2003,6 +2031,13 @@ sub print_sortfilter_options { my $group_sel = ''; my $numgroupvis = 5; my %sectioncount = &Apache::loncommon::get_sections(); + my @courseroles = qw(st ad ep ta in); + my $crstype = &Apache::loncommon::course_type(); + my $ccrole = 'cc'; + if ($crstype eq 'Community') { + $ccrole = 'co'; + } + push(@courseroles,$ccrole); if ($env{'request.course.sec'} !~ /^\s*$/) { #Restrict section choice to current section @sections = ('all',$env{'request.course.sec'}); @@ -2066,7 +2101,7 @@ sub print_sortfilter_options { my %sort_types = (); my %role_types = (); my %status_types = (); - &sort_filter_names(\%sort_types,\%role_types,\%status_types); + &sort_filter_names(\%sort_types,\%role_types,\%status_types,$crstype); my $js = < @@ -2113,22 +2148,22 @@ END $r->print(< + $lt{'diso'}
$lt{'prca'}

$lt{$discdisp} +
- +
$lt{$disctogg}
- - - - - - - - - - - + + + + + + + + + + + @@ -2182,7 +2218,7 @@ $start_page
- + END if (exists($env{'form.group'})) { $r->print(''); @@ -2305,7 +2341,7 @@ END
- + $end_page END @@ -2391,7 +2427,7 @@ ENDFAILREDIR } sub redirect_back { - my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$blog,$status,$previous,$sort,$rolefilter,$statusfilter,$sectionpick,$grouppick,$numpicks,$group) = @_; + my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$blog,$status,$previous,$sort,$rolefilter,$statusfilter,$sectionpick,$grouppick,$numpicks,$group,$toolarge) = @_; my $sorttag = ''; my $roletag = ''; my $statustag = ''; @@ -2408,7 +2444,7 @@ sub redirect_back { if ($previous > 0) { $qrystr = 'previous='.$previous; if ($feedurl =~ /\?register=1/) { - $feedurl .= '&'.$qrystr; + $feedurl .= '&'.$qrystr; } else { $feedurl .= '?'.$qrystr; } @@ -2417,14 +2453,14 @@ sub redirect_back { if (defined($sort)) { my $sortqry = 'sortposts='.$sort; if (($feedurl =~ /\?register=1/) || ($feedurl =~ /\?previous=/)) { - $feedurl .= '&'.$sortqry; + $feedurl .= '&'.$sortqry; } else { $feedurl .= '?'.$sortqry; } $sorttag = ''; if (defined($numpicks)) { my $userpickqry = 'totposters='.$numpicks; - $feedurl .= '&'.$userpickqry; + $feedurl .= '&'.$userpickqry; $userpicktag = ''; } else { if (ref($sectionpick) eq 'ARRAY') { @@ -2438,7 +2474,7 @@ sub redirect_back { $sectag =~ s/,$//; $sectag .= '" />'; } else { - $feedurl .= '§ionpick='.$sectionpick; + $feedurl .= '&sectionpick='.$sectionpick; $sectag = ''; } if (ref($grouppick) eq 'ARRAY') { @@ -2452,7 +2488,7 @@ sub redirect_back { $grptag =~ s/,$//; $grptag .= '" />'; } else { - $feedurl .= '&grouppick='.$grouppick; + $feedurl .= '&grouppick='.$grouppick; $grptag = ''; } if (ref($rolefilter) eq 'ARRAY') { @@ -2469,13 +2505,14 @@ sub redirect_back { $feedurl .= '&rolefilter='.$rolefilter; $roletag = ''; } - $feedurl .= '&statusfilter='.$statusfilter; + $feedurl .= '&statusfilter='.$statusfilter; $statustag =''; } } my $grouptag; if ($group ne '') { - $grouptag = ''; my $refarg; + $grouptag = ''; + my $refarg; if (exists($env{'form.ref'})) { $refarg = '&ref='.$env{'form.ref'}; $grouptag .= ''; @@ -2505,6 +2542,7 @@ $start_page $typestyle Sent $sendsomething message(s), and $sendposts post(s). $blog +$toolarge $status $prevtag @@ -2556,6 +2594,22 @@ ENDNOREDIRTWO sub screen_header { my ($feedurl,$symb) = @_; + my $crscontent = &mt('Question/Comment/Feedback about course content'); + my $crspolicy = &mt('Question/Comment/Feedback about course policy'); + my $contribdisc = &mt('Contribution to course discussion of resource'); + my $anoncontrib = &mt('Anonymous contribution to course discussion of resource'); + my $namevis = &mt('name only visible to course faculty'); + my $crstype; + if ($env{'request.course.id'}) { + $crstype = &Apache::loncommon::course_type(); + if ($crstype eq 'Community') { + $crscontent = &mt('Question/Comment/Feedback about community content'); + $crspolicy = &mt('Question/Comment/Feedback about community policy'); + $contribdisc = &mt('Contribution to community discussion of resource'); + $anoncontrib = &mt('Anonymous contribution to community discussion of resource'); + $namevis = &mt('name only visible to community facilitators'); + } + } my $msgoptions=''; my $discussoptions=''; unless (($env{'form.replydisc'}) || ($env{'form.editdisc'})) { @@ -2576,13 +2630,13 @@ sub screen_header { if (&feedback_available(0,1)) { $msgoptions.= '

'; } if (&feedback_available(0,0,1)) { $msgoptions.= '

'; } } @@ -2593,20 +2647,28 @@ sub screen_header { $env{'request.course.id'}. ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) { $discussoptions='
'. + $contribdisc. + '
'. + ''.&mt('Change Screenname').''; my $blockblog = &Apache::loncommon::blocking_status('blogs'); if (!$blockblog) { - $discussoptions.= &add_blog_checkbox(); + $discussoptions.= &add_blog_checkbox($crstype); } } } - if ($msgoptions) { $msgoptions='

'.&mt('Sending Messages').'

'.$msgoptions; } + if ($msgoptions) { + $msgoptions='

' + .' '.&mt('Send Feedback').'

'.&Apache::lonhtmlcommon::coursepreflink(&mt('Feedback Settings'),'feedback').'

' + .$msgoptions; + } if ($discussoptions) { - $discussoptions='

'.&mt('Discussion Contributions').'

'.$discussoptions; } + $discussoptions='

' + .' '.&mt('Discussion Contributions').'

'.&Apache::lonhtmlcommon::coursepreflink(&mt('Discussion Settings'),'discussion').'

' + .$discussoptions; + } return $msgoptions.$discussoptions; } @@ -2635,11 +2697,13 @@ sub clear_out_html { ($override)) { # allows


      • #

        - # + #

  • $lt{'soor'} $lt{'sprs'} $lt{'spur'} $lt{'spse'} $lt{'spgr'} $lt{'psub'}$lt{'soor'} $lt{'sprs'} $lt{'spur'} $lt{'spse'} $lt{'spgr'} $lt{'psub'}
    @@ -2152,25 +2187,26 @@ $start_page   - - + +   - $section_sel   - $group_sel
    %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1, BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1, M=>1, ALGEBRA=>1, SUB=>1, SUP=>1, SPAN=>1, - H1=>1, H2=>1, H3=>1, H4=>1, H5=>1); + H1=>1, H2=>1, H3=>1, H4=>1, H5=>1, H6=>1, + TABLE=>1, TR=>1, TD=>1, TH=>1, TBODY=>1); + } # Do the substitution of everything that is not explicitly allowed $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/ @@ -2888,11 +2952,33 @@ sub show_preview { my $end_page = &Apache::loncommon::end_page(); - $r->print($start_page.'
    '. - ''.&mt('Subject').': '.$subject.'

    '. - $message.'
    '.$end_page); + $r->print($start_page + .'

    '.&mt('Preview').'

    ' + .&Apache::lonhtmlcommon::start_pick_box() + .&Apache::lonhtmlcommon::row_title(&mt('Subject')) + .$subject + .&Apache::lonhtmlcommon::row_closure() + .&Apache::lonhtmlcommon::row_title(&mt('Message')) + .$message + .&Apache::lonhtmlcommon::row_closure(1) + .&Apache::lonhtmlcommon::end_pick_box() + .$end_page + ); } +sub contains_block_html { + my ($message)=@_; + return ($message =~ m{ + <(br|h1|h2|h3|h4|h5|h6|p|ol|ul|table|pre|address|blockquote|center|div) + \s* + (\w+\=['"]\w+['"])* + \s* + ( + \s*/>| + >.* + )}xs + ); +} sub newline_to_br { my ($message)=@_; @@ -2923,16 +3009,17 @@ sub generate_preview_button { return(< - + +onclick="if (typeof(document.$formname.onsubmit)=='function') {document.$formname.onsubmit();};this.form.comment.value=document.$formname.$fieldname.value;this.form.subject.value=document.$formname.subject.value;this.form.submit();" /> ENDPREVIEW } sub modify_attachments { - my ($r,$currnewattach,$currdelold,$symb,$idx,$attachmenturls)=@_; + my ($r,$currnewattach,$currdelold,$symb,$idx,$attachmenturls, + $attachmaxtext,$toolarge)=@_; my %lt = &Apache::lonlocal::texthash( 'subj' => 'Subject', @@ -2974,11 +3061,13 @@ END $r->print(< - +
    +
    - + + + + +
    - Subject: $subject

    +
    + Subject: $subject

    END if ($idx) { if ($attachmenturls) { @@ -3003,9 +3092,15 @@ END $r->print("
    "); } $r->print(< +
    + $lt{'adda'}
    $attachmaxtext
    @@ -3023,7 +3118,7 @@ END $r->print(''."\n"); } $r->print(< + $end_page END @@ -3085,8 +3180,8 @@ this.form.submit();" /> - - + + ENDATTACH if (defined($deloldattach)) { @@ -3215,7 +3310,8 @@ sub construct_attachmenturl { } sub add_blog_checkbox { - my ($checkstatus); + my ($crstype) = @_; + my $checkstatus; if ($env{'form.blog'}) { $checkstatus = 'checked="checked"'; } @@ -3229,27 +3325,39 @@ function setblogvalue() { } }
    -
    '."\n"; +
    '."\n"; return $output; } sub has_discussion { my $resourcesref = shift; my $navmap = Apache::lonnavmaps::navmap->new(); - my @allres=$navmap->retrieveResources(); - foreach my $resource (@allres) { - if ($resource->hasDiscussion()) { - my $ressymb = $resource->wrap_symb(); - push(@{$resourcesref}, $ressymb); + if (defined($navmap)) { + my @allres=$navmap->retrieveResources(); + foreach my $resource (@allres) { + if ($resource->hasDiscussion()) { + my $ressymb = $resource->wrap_symb(); + if (ref($resourcesref) eq 'ARRAY') { + push(@{$resourcesref}, $ressymb); + } + } } + } else { + &Apache::lonnet::logthis('Has discussion check failed - could not create navmap object.'); } return; } sub sort_filter_names { - my ($sort_types,$role_types,$status_types) = @_; - %{$sort_types} = ( + my ($sort_types,$role_types,$status_types,$crstype) = @_; + if (ref($sort_types) eq 'HASH') { + %{$sort_types} = ( ascdate => 'Date order - oldest first', descdate => 'Date order - newest first', thread => 'Threaded', @@ -3257,24 +3365,30 @@ sub sort_filter_names { username => 'By domain and username', lastfirst => 'By last name, first name' ); - %{$role_types} = ( - all => 'All roles', - st => 'Students', - cc => 'Course Coordinators', - in => 'Instructors', - ta => 'TAs', - ep => 'Exam proctors', - ad => 'Administrators', - cr => 'Custom roles' - ); - %{$status_types} = ( - all => 'Roles of any status', - Active => 'Only active roles', - Expired => 'Only past roles', - Future => 'Only future roles', - ); + } + my @courseroles = qw(st in ta ep ad); + if ($crstype eq 'Community') { + push(@courseroles,'co'); + } else { + push(@courseroles,'cc'); + } + if (ref($role_types) eq 'HASH') { + foreach my $role (@courseroles) { + $role_types->{$role} = &Apache::lonnet::plaintext($role,$crstype); + } + $role_types->{'all'} = 'All roles'; + $role_types->{'cr'} = 'Custom role'; + } + if (ref($status_types) eq 'HASH') { + %{$status_types} = ( + all => 'Roles of any status', + Active => 'Only active roles', + Expired => 'Only past roles', + Future => 'Only future roles', + ); + } } - + sub handler { my $r = shift; if ($r->header_only) { @@ -3288,6 +3402,10 @@ sub handler { &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['hide','unhide','deldisc','postdata','preview','replydisc','editdisc','cmd','symb','onlyunread','allposts','onlyunmark','previous','markread','markonread','markondisp','toggoff','toggon','modifydisp','changes','navtime','navmaps','navurl','sortposts','applysort','rolefilter','statusfilter','sectionpick','groupick','posterlist','userpick','attach','origpage','currnewattach','deloldattach','keepold','allversions','export','sendmessageonly','group','ref']); my $group = $env{'form.group'}; + my %attachmax = ( + text => &mt('(128 KB max size)'), + num => 131072, + ); if ($env{'form.editdisc'}) { if (!(&editing_allowed($env{'form.editdisc'},$env{'form.group'}))) { my $symb=(split(/\:\:\:/,$env{'form.editdisc'}))[0]; @@ -3415,7 +3533,7 @@ sub handler { my %lt = &Apache::lonlocal::texthash( 'mnpa' => 'Marked "New" posts as read in a total of', 'robb' => 'resources/bulletin boards.', - 'twnp' => 'There are currently no resources or bulletin boards with unread discussion postings.' + 'twnp' => 'There are currently no resources or discussion boards with unread discussion postings.' ); foreach my $res (@resources) { my $ressymb=$res; @@ -3558,10 +3676,10 @@ ENDREDIR my ($symb,$feedurl)=&get_feedurl_and_clean_symb($env{'form.symb'}); if ($env{'form.cmd'} eq 'threadedon') { &Apache::lonnet::put('environment',{'threadeddiscussion' => 'on'}); - &Apache::lonnet::appenv('environment.threadeddiscussion' => 'on'); + &Apache::lonnet::appenv({'environment.threadeddiscussion' => 'on'}); } else { &Apache::lonnet::del('environment',['threadeddiscussion']); - &Apache::lonnet::delenv('environment\.threadeddiscussion'); + &Apache::lonnet::delenv('environment.threadeddiscussion'); } &redirect_back($r,$feedurl,&mt('Changed discussion view mode').'
    ', '0','0','','',$env{'form.previous'},undef,undef,undef, @@ -3596,13 +3714,15 @@ ENDREDIR &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['subject','comment','addnewattach','delnewattach','timestamp','numoldver','idx','discuss','blog']); - my (@currnewattach,@currdelold,@keepold); + my (@currnewattach,@currdelold,@keepold,$toolarge); &process_attachments(\@currnewattach,\@currdelold,\@keepold); if (exists($env{'form.addnewattach.filename'})) { - unless (length($env{'form.addnewattach'})>131072) { + if (length($env{'form.addnewattach'})<=$attachmax{'num'}) { my $subdir = 'feedback/'.$env{'form.timestamp'}; my $newattachment=&Apache::lonnet::userfileupload('addnewattach',undef,$subdir); push(@currnewattach, $newattachment); + } else { + $toolarge = '

    '.&mt('Attachment not included - exceeded permitted length').'

    '; } } my $attachmenturls; @@ -3615,7 +3735,7 @@ ENDREDIR $attachmenturls = $contrib{$idx.':attachmenturl'}; } &modify_attachments($r,\@currnewattach,\@currdelold,$symb,$idx, - $attachmenturls); + $attachmenturls,$attachmax{'text'},$toolarge); return OK; } elsif ($env{'form.export'}) { &Apache::loncommon::content_type($r,'text/html'); @@ -3638,7 +3758,7 @@ ENDREDIR } else { # ------------------------------------------------------------- Normal feedback my $feedurl=$env{'form.postdata'}; - $feedurl=~s/^http\:\/\///; + $feedurl=~s/^https?\:\/\///; $feedurl=~s/^$ENV{'SERVER_NAME'}//; $feedurl=~s/^$ENV{'HTTP_HOST'}//; $feedurl=~s/\?.+$//; @@ -3704,7 +3824,7 @@ ENDREDIR } my $options=&screen_header($feedurl,$symb); if ($options) { - &mail_screen($r,$feedurl,$options,$symb); + &mail_screen($r,$feedurl,$options,$symb,$attachmax{'text'}); } else { &fail_redirect($r,$feedurl); } @@ -3721,7 +3841,7 @@ ENDREDIR my $usersaw=&resource_output($feedurl); # Get resource answer (need to allow student to view grades for this to work) - &Apache::lonnet::appenv(('allowed.vgr'=>'F')); + &Apache::lonnet::appenv({'allowed.vgr'=>'F'}); my $usersymb = &Apache::lonenc::check_encrypt($symb); my $useranswer= &Apache::loncommon::get_student_answers( @@ -3730,6 +3850,7 @@ ENDREDIR &Apache::lonnet::delenv('allowed.vgr'); # Get attachments, if any, and not too large my $attachmenturl=''; + my $toolarge=''; if (($env{'form.origpage'}) || ($env{'form.editdisc'}) || ($env{'form.replydisc'})) { my ($symb,$idx); @@ -3748,9 +3869,13 @@ ENDREDIR $symb=~s|(bulletin___\d+___)adm/wrapper/|$1|; $attachmenturl=&construct_attachmenturl(\@currnewattach,\@keepold,$symb,$idx); } elsif ($env{'form.attachment.filename'}) { - unless (length($env{'form.attachment'})>131072) { - $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,'feedback'); - } + if (length($env{'form.attachment'})<=$attachmax{'num'}) { + my $now = time; + my $subdir = 'feedback/'.$now; + $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,$subdir); + } else { + $toolarge = '

    '.&mt('Attachment not included - exceeded permitted length').'

    '; + } } # Filter HTML out of message (could be nasty) my $message=&clear_out_html($env{'form.comment'}); @@ -3789,11 +3914,15 @@ ENDREDIR $env{'user.domain'}, 'CourseBlog_'.$env{'request.course.id'}, $subject,$message,$feedurl,'public'); - $blog='
    '.&mt('Added to my course blog').'
    '; + if (&Apache::loncommon::course_type() eq 'Community') { + $blog='
    '.&mt('Added to my community blog').'
    '; + } else { + $blog='
    '.&mt('Added to my course blog').'
    '; + } } # Receipt screen and redirect back to where came from - &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$blog,$status,$env{'form.previous'},undef,undef,undef,undef,undef,undef,$group); + &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$blog,$status,$env{'form.previous'},undef,undef,undef,undef,undef,undef,$group,$toolarge); } return OK; } @@ -3938,3 +4067,131 @@ sub get_resource_title { 1; __END__ + + +=pod + +=head1 NAME + +Apache::lonfeedback.pm + +=head1 SYNOPSIS + +Handles feedback from students to instructors and system administrators. + +Provides a screenshot of the current resource, as well as previous attempts if the resource was a homework. + +Used by lonmsg.pm. + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + +=head1 OVERVIEW + +None + +=head1 SUBROUTINES + +=over + +=item discussion_open() + +=item discussion_visible() + +=item list_discussion() + +=item send_feedback_link() + +=item send_message_link() + +=item action_links_bar() + +=item postingform_display() + +=item build_posting_display + +=item filter_regexp() + +=item get_post_contents() + +=item replicate_attachments() + +=item mail_screen() + +=item print_display_options() + +=item print_sortfilter_options() + +=item print_showposters() + +=item get_post_versions() + +=item get_post_attachments() + +=item fail_redirect() + +=item redirect_back() + +=item no_redirect_back() + +=item screen_header() + +=item resource_output() + +=item clear_out_html() + +=item assemble_email() + +=item feedback_available() + +=item send_msg() + +=item adddiscuss() + +=item get_discussion_info() + +=item show_preview() + +=item newline_to_br() + +=item generate_preview_button() + +=item modify_attachments() + +=item process_attachments() + +=item generate_attachments_button() + +=item extract_attachments() + +=item construct_attachmenturl() + +=item add_blog_checkbox() + +=item has_discussion() + +=item sort_filter_names() + +=item handler() + +=item blocked_reply_or_edit() + +=item wrap_symb() + +=item dewrapper() + +=item get_feedurl() + +=item get_feedurl_and_clean_symb() + +=item editing_allowed() + +=item check_group_priv() + +=item group_args() + +=item get_resource_title() + +=back + +=cut 500 Internal Server Error

    Internal Server Error

    The server encountered an internal error or misconfiguration and was unable to complete your request.

    Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

    More information about this error may be available in the server error log.