--- loncom/interface/lonfeedback.pm 2002/01/01 15:02:31 1.21
+++ loncom/interface/lonfeedback.pm 2004/08/01 16:05:14 1.111
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Feedback
#
-# $Id: lonfeedback.pm,v 1.21 2002/01/01 15:02:31 www Exp $
+# $Id: lonfeedback.pm,v 1.111 2004/08/01 16:05:14 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -25,22 +25,7 @@
#
# http://www.lon-capa.org/
#
-# (Internal Server Error Handler
-#
-# (Login Screen
-# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
-# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
-#
-# 3/1/1 Gerd Kortemeyer)
-#
-# 3/1,2/3,2/5,2/6,2/8 Gerd Kortemeyer
-# 2/9 Guy Albertelli
-# 2/10 Gerd Kortemeyer
-# 2/13 Guy Albertelli
-# 7/25 Gerd Kortemeyer
-# 7/26 Guy Albertelli
-# 7/26,8/10,10/1,11/5,11/6,12/27,12/29 Gerd Kortemeyer
-
+###
package Apache::lonfeedback;
@@ -48,15 +33,1030 @@ use strict;
use Apache::Constants qw(:common);
use Apache::lonmsg();
use Apache::loncommon();
+use Apache::lontexconvert();
+use Apache::lonlocal; # must not have ()
+use Apache::lonhtmlcommon();
+use Apache::lonspeller();
+
+sub discussion_open {
+ my ($status)=@_;
+ if (defined($status) &&
+ !($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER'
+ || $status eq 'OPEN')) {
+ return 0;
+ }
+ my $close=&Apache::lonnet::EXT('resource.0.discussend');
+ if (defined($close) && $close ne '' && $close < time) {
+ return 0;
+ }
+ return 1;
+}
+
+sub discussion_visible {
+ my ($status)=@_;
+ if (not &discussion_open($status)) {
+ my $hidden=&Apache::lonnet::EXT('resource.0.discusshide');
+ if (lc($hidden) eq 'yes' or $hidden eq '' or !defined($hidden)) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+sub list_discussion {
+ my ($mode,$status,$symb)=@_;
+ my $outputtarget=$ENV{'form.grade_target'};
+ if (not &discussion_visible($status)) { return ''; }
+ my @bgcols = ("#cccccc","#eeeeee");
+ my $discussiononly=0;
+ if ($mode eq 'board') { $discussiononly=1; }
+ unless ($ENV{'request.course.id'}) { return ''; }
+ my $crs='/'.$ENV{'request.course.id'};
+ my $cid=$ENV{'request.course.id'};
+ if ($ENV{'request.course.sec'}) {
+ $crs.='_'.$ENV{'request.course.sec'};
+ }
+ $crs=~s/\_/\//g;
+ unless ($symb) {
+ $symb=&Apache::lonnet::symbread();
+ }
+ unless ($symb) { return ''; }
+ my %usernamesort = ();
+ my %namesort =();
+ my %subjectsort = ();
+# backward compatibility (bulletin boards used to be 'wrapped')
+ my $ressymb=$symb;
+ if ($mode eq 'board') {
+ unless ($ressymb =~ m|bulletin___\d+___adm/wrapper|) {
+ $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
+ }
+ }
+
+# Get discussion display settings for this discussion
+ my $lastkey = $ressymb.'_lastread';
+ my $showkey = $ressymb.'_showonlyunread';
+ my $markkey = $ressymb.'_showonlyunmark',
+ my $visitkey = $ressymb.'_visit';
+ my $ondispkey = $ressymb.'_markondisp';
+ my $userpickkey = $ressymb.'_userpick';
+ my $toggkey = $ressymb.'_readtoggle';
+ my $readkey = $ressymb.'_read';
+
+ my %dischash = &Apache::lonnet::get('nohist_'.$ENV{'request.course.id'}.'_discuss',[$lastkey,$showkey,$markkey,$visitkey,$ondispkey,$userpickkey,$toggkey,$readkey],$ENV{'user.domain'},$ENV{'user.name'});
+ my %discinfo = ();
+ my $showonlyunread = 0;
+ my $showunmark = 0;
+ my $markondisp = 0;
+ my $prevread = 0;
+ my $previous = 0;
+ my $visit = 0;
+ my $newpostsflag = 0;
+ my @posters = split/\&/,$dischash{$userpickkey};
+
+# Retain identification of "NEW" posts identified in last display, if continuing 'previous' browsing of posts.
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['previous','sortposts','rolefilter','statusfilter','sectionpick','totposters']);
+ my $sortposts = $ENV{'form.sortposts'};
+ my $rolefilter = $ENV{'form.rolefilter'};
+ my $statusfilter = $ENV{'form.statusfilter'};
+ my $sectionpick = $ENV{'form.sectionpick'};
+ my $totposters = $ENV{'form.totposters'};
+ $previous = $ENV{'form.previous'};
+ if ($previous > 0) {
+ $prevread = $previous;
+ } elsif (defined($dischash{$lastkey})) {
+ unless ($dischash{$lastkey} eq '') {
+ $prevread = $dischash{$lastkey};
+ }
+ }
+
+# Get information about students and non-students in course for filtering display of posts
+ my %roleshash = ();
+ my %roleinfo = ();
+ if ($rolefilter) {
+ %roleshash = &Apache::lonnet::dump('nohist_userroles',$ENV{'course.'.$ENV{'request.course.id'}.'.domain'},$ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+ foreach (keys %roleshash) {
+ my ($role,$uname,$udom,$sec) = split/:/,$_;
+ my ($end,$start) = split/:/,$roleshash{$_};
+ my $now = time;
+ my $status = 'Active';
+ if (($now < $start) || ($end > 0 && $now > $end)) {
+ $status = 'Expired';
+ }
+ push @{$roleinfo{$uname.':'.$udom}}, $role.':'.$sec.':'.$status;
+ }
+ my ($classlist) = &Apache::loncoursedata::get_classlist(
+ $ENV{'request.course.id'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+ my $sec_index = &Apache::loncoursedata::CL_SECTION();
+ my $status_index = &Apache::loncoursedata::CL_STATUS();
+ while (my ($student,$data) = each %$classlist) {
+ my ($section,$status) = ($data->[$sec_index],
+ $data->[$status_index]);
+ push @{$roleinfo{$student}}, 'st:'.$section.':'.$status;
+ }
+ }
+
+# Get discussion display default settings for user
+ my %userenv = &Apache::lonnet::get('environment',['discdisplay','discmarkread'],$ENV{'user.domain'},$ENV{'user.name'});
+ my $discdisplay=$userenv{'discdisplay'};
+ if ($discdisplay eq 'unread') {
+ $showonlyunread = 1;
+ }
+ my $discmarkread=$userenv{'discmarkread'};
+ if ($discmarkread eq 'ondisp') {
+ $markondisp = 1;
+ }
+
+# Override user's default if user specified display setting for this discussion
+ if (defined($dischash{$ondispkey})) {
+ $markondisp = $dischash{$ondispkey};
+ }
+ if ($markondisp) {
+ $discinfo{$lastkey} = time;
+ }
+
+ if (defined($dischash{$showkey})) {
+ $showonlyunread = $dischash{$showkey};
+ }
+
+ if (defined($dischash{$markkey})) {
+ $showunmark = $dischash{$markkey};
+ }
+
+ if (defined($dischash{$visitkey})) {
+ $visit = $dischash{$visitkey};
+ }
+ $visit ++;
+
+ my $seeid=&Apache::lonnet::allowed('rin',$crs);
+ my $viewgrades=(&Apache::lonnet::allowed('vgr',$crs)
+ && ($symb=~/\.(problem|exam|quiz|assess|survey|form)$/));
+ my @discussionitems=();
+ my %shown = ();
+ my @posteridentity=();
+ my %contrib=&Apache::lonnet::restore($ressymb,$ENV{'request.course.id'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+ my $visible=0;
+ my @depth=();
+ my @original=();
+ my @index=();
+ my @replies=();
+ my %alldiscussion=();
+ my %notshown = ();
+ my %newitem = ();
+ my $maxdepth=0;
+
+ my $target='';
+ unless ($ENV{'browser.interface'} eq 'textual' ||
+ $ENV{'environment.remote'} eq 'off' ) {
+ $target='target="LONcom"';
+ }
+
+ my $now = time;
+ $discinfo{$visitkey} = $visit;
+
+ &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%discinfo,$ENV{'user.domain'},$ENV{'user.name'});
+
+ if ($contrib{'version'}) {
+ my $oldest = $contrib{'1:timestamp'};
+ if ($prevread eq '0') {
+ $prevread = $oldest-1;
+ }
+ for (my $id=1;$id<=$contrib{'version'};$id++) {
+ my $idx=$id;
+ my $posttime = $contrib{$idx.':timestamp'};
+ if ($prevread <= $posttime) {
+ $newpostsflag = 1;
+ }
+ my $hidden=($contrib{'hidden'}=~/\.$idx\./);
+ my $studenthidden=($contrib{'studenthidden'}=~/\.$idx\./);
+ my $deleted=($contrib{'deleted'}=~/\.$idx\./);
+ my $origindex='0.';
+ my $numoldver=0;
+ if ($contrib{$idx.':replyto'}) {
+ if ( (($ENV{'environment.threadeddiscussion'}) && (($sortposts eq '') || ($sortposts eq 'ascdate'))) || ($sortposts eq 'thread')) {
+# this is a follow-up message
+ $original[$idx]=$original[$contrib{$idx.':replyto'}];
+ $depth[$idx]=$depth[$contrib{$idx.':replyto'}]+1;
+ $origindex=$index[$contrib{$idx.':replyto'}];
+ if ($depth[$idx]>$maxdepth) { $maxdepth=$depth[$idx]; }
+ } else {
+ $original[$idx]=0;
+ $depth[$idx]=0;
+ }
+ } else {
+# this is an original message
+ $original[$idx]=0;
+ $depth[$idx]=0;
+ }
+ if ($replies[$depth[$idx]]) {
+ $replies[$depth[$idx]]++;
+ } else {
+ $replies[$depth[$idx]]=1;
+ }
+ unless ((($hidden) && (!$seeid)) || ($deleted)) {
+ $visible++;
+ if ($contrib{$idx.':history'}) {
+ if ($contrib{$idx.':history'} =~ /:/) {
+ my @oldversions = split/:/,$contrib{$idx.':history'};
+ $numoldver = @oldversions;
+ } else {
+ $numoldver = 1;
+ }
+ }
+ my ($message,$subject);
+ if ($idx > 0) {
+ if ($contrib{$idx.':message'} =~ /.*::::\Q$numoldver\E::::(.+?)$/si) {
+ $message = $1;
+ } else {
+ $message = $contrib{$idx.':message'};
+ }
+ } else {
+ $message=$contrib{$idx.':message'};
+ }
+ my $attachmenturls = $contrib{$idx.':attachmenturl'};
+ $message=~s/\n/\
/g;
+ $message=&Apache::lontexconvert::msgtexconverted($message);
+ if ($idx > 0) {
+ if ($contrib{$idx.':subject'} =~ /.*::::\Q$numoldver\E::::(.+?)$/si) {
+ $subject = $1;
+ } else {
+ $subject = $contrib{$idx.':subject'};
+ }
+ } else {
+ $subject=$contrib{$idx.':subject'};
+ }
+ if (defined($subject)) {
+ $subject=~s/\n/\
/g;
+ $subject=&Apache::lontexconvert::msgtexconverted($subject);
+ }
+ if ($attachmenturls) {
+ my @attachments = ();
+ my %currattach = ();
+ &extract_attachments($attachmenturls,$idx,$numoldver,\$message,\@attachments,\%currattach);
+ }
+ if ($message) {
+ if ($hidden) {
+ $message=''.$message.'';
+ if ($studenthidden) {
+ $message .='
Deleted by poster (student).';
+ }
+ }
+ my $screenname=&Apache::loncommon::screenname(
+ $contrib{$idx.':sendername'},
+ $contrib{$idx.':senderdomain'});
+ my $plainname=&Apache::loncommon::nickname(
+ $contrib{$idx.':sendername'},
+ $contrib{$idx.':senderdomain'});
+
+ my $sender=&mt('Anonymous');
+# Set up for sorting by subject
+ if ($contrib{$idx.':subject'} eq '') {
+ if (defined($subjectsort{'__No subject'})) {
+ push @{$subjectsort{'__No subject'}}, $idx;
+ } else {
+ @{$subjectsort{'__No subject'}} = ("$idx");
+ }
+ } else {
+ if (defined($subjectsort{$contrib{$idx.':subject'}})) {
+ push @{$subjectsort{$contrib{$idx.':subject'}}}, $idx;
+ } else {
+ @{$subjectsort{$contrib{$idx.':subject'}}} = ("$idx");
+ }
+ }
+ if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
+ $sender=&Apache::loncommon::aboutmewrapper(
+ $plainname,
+ $contrib{$idx.':sendername'},
+ $contrib{$idx.':senderdomain'}).' ('.
+ $contrib{$idx.':sendername'}.' at '.
+ $contrib{$idx.':senderdomain'}.')';
+ if ($contrib{$idx.':anonymous'}) {
+ $sender.=' ['.&mt('anonymous').'] '.
+ $screenname;
+ }
+# Set up for sorting by domain, then username
+ unless (defined($usernamesort{$contrib{$idx.':senderdomain'}})) {
+ %{$usernamesort{$contrib{$idx.':senderdomain'}}} = ();
+ }
+ if (defined($usernamesort{$contrib{$idx.':senderdomain'}}{$contrib{$idx.':sendername'}})) {
+ push @{$usernamesort{$contrib{$idx.':senderdomain'}}{$contrib{$idx.':sendername'}}}, $idx;
+ } else {
+ @{$usernamesort{$contrib{$idx.':senderdomain'}}{$contrib{$idx.':sendername'}}} = ("$idx");
+ }
+# Set up for sorting by last name, then first name
+ my %names = &Apache::lonnet::get('environment',['firstname','lastname'],
+ $contrib{$idx.':senderdomain'},$contrib{$idx.':sendername'});
+ my $lastname = $names{'lastname'};
+ my $firstname = $names{'firstname'};
+ if ($lastname eq '') {
+ $lastname = '_';
+ }
+ if ($firstname eq '') {
+ $firstname = '_';
+ }
+ unless (defined($namesort{$lastname})) {
+ %{$namesort{$lastname}} = ();
+ }
+ if (defined($namesort{$lastname}{$firstname})) {
+ push @{$namesort{$lastname}{$firstname}}, $idx;
+ } else {
+ @{$namesort{$lastname}{$firstname}} = ("$idx");
+ }
+ if ($ENV{"course.$cid.allow_discussion_post_editing"} =~ m/yes/i) {
+ if (($ENV{'user.domain'} eq $contrib{$idx.':senderdomain'}) && ($ENV{'user.name'} eq $contrib{$idx.':sendername'})) {
+ $sender.=' '.&mt('Edit').''; unless ($seeid) {
+ $sender.=" ';
+ }
+ }
+ }
+ if ($seeid) {
+ if ($hidden) {
+ unless ($studenthidden) {
+ $sender.=' '.&mt('Make Visible').'';
+ }
+ } else {
+ $sender.=' '.&mt('Hide').'';
+ }
+ $sender.=' '.&mt('Delete').'';
+ }
+ } else {
+ if ($screenname) {
+ $sender=''.$screenname.'';
+ }
+# Set up for sorting by domain, then username for anonymous
+ unless (defined($usernamesort{'__anon'})) {
+ %{$usernamesort{'__anon'}} = ();
+ }
+ if (defined($usernamesort{'__anon'}{'__anon'})) {
+ push @{$usernamesort{'__anon'}{'__anon'}}, $idx;
+ } else {
+ @{$usernamesort{'__anon'}{'__anon'}} = ("$idx");
+ }
+# Set up for sorting by last name, then first name for anonymous
+ unless (defined($namesort{'__anon'})) {
+ %{$namesort{'__anon'}} = ();
+ }
+ if (defined($namesort{'__anon'}{'__anon'})) {
+ push @{$namesort{'__anon'}{'__anon'}}, $idx;
+ } else {
+ @{$namesort{'__anon'}{'__anon'}} = ("$idx");
+ }
+ }
+ if (&discussion_open($status) &&
+ &Apache::lonnet::allowed('pch',
+ $ENV{'request.course.id'}.
+ ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
+ $sender.=' '.&mt('Reply').'';
+ }
+ my $vgrlink;
+ if ($viewgrades) {
+ $vgrlink=&Apache::loncommon::submlink('Submissions',
+ $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
+ }
+ my $ctlink;
+ if ($dischash{$readkey}=~/\.$idx\./) {
+ $ctlink = ''.&mt('Mark unread').'? ';
+ } else {
+ $ctlink = ''.&mt('Mark read').'? ';
+ }
+#figure out at what position this needs to print
+ my $thisindex=$idx;
+ if ( (($ENV{'environment.threadeddiscussion'}) && (($sortposts eq '') || ($sortposts eq 'ascdate'))) || ($sortposts eq 'thread')) {
+ $thisindex=$origindex.substr('00'.$replies[$depth[$idx]],-2,2);
+ }
+ $alldiscussion{$thisindex}=$idx;
+ $shown{$idx} = 0;
+ $index[$idx]=$thisindex;
+ my $spansize = 2;
+ if ($showonlyunread && $prevread > $posttime) {
+ $notshown{$idx} = 1;
+ } elsif ($showunmark && $dischash{$readkey}=~/\.$idx\./) {
+ $notshown{$idx} = 1;
+ } else {
+# apply filters
+ my $uname = $contrib{$idx.':sendername'};
+ my $udom = $contrib{$idx.':senderdomain'};
+ my $poster = $uname.':'.$udom;
+ my $rolematch = '';
+ my $skiptest = 1;
+ if ($totposters > 0) {
+ if (grep/^$poster$/,@posters) {
+ $shown{$idx} = 1;
+ }
+ } else {
+ if ($rolefilter) {
+ if ($rolefilter eq 'all') {
+ $rolematch = '([^:]+)';
+ } else {
+ $rolematch = $rolefilter;
+ $skiptest = 0;
+ }
+ }
+ if ($sectionpick) {
+ if ($sectionpick eq 'all') {
+ $rolematch .= ':([^:]*)';
+ } else {
+ $rolematch .= ':'.$sectionpick;
+ $skiptest = 0;
+ }
+ }
+ if ($statusfilter) {
+ if ($statusfilter eq 'all') {
+ $rolematch .= ':([^:]+)';
+ } else {
+ $rolematch .= ':'.$statusfilter;
+ $skiptest = 0;
+ }
+ }
+ if ($skiptest) {
+ $shown{$idx} = 1;
+ } else {
+ foreach my $role (@{$roleinfo{$poster}}) {
+ if ($role =~ m/^$rolematch$/) {
+ $shown{$idx} = 1;
+ last;
+ }
+ }
+ }
+ }
+ }
+ unless ($notshown{$idx} == 1) {
+ if ($prevread > 0 && $prevread <= $posttime) {
+ $newitem{$idx} = 1;
+ $discussionitems[$idx] .= '
+
+ NEW | ';
+ } else {
+ $newitem{$idx} = 0;
+ $discussionitems[$idx] .= '
+
+ | ';
+ }
+ $discussionitems[$idx] .= ' '.
+ ''.$subject.' '.
+ $sender.' '.$vgrlink.' ('.
+ &Apache::lonlocal::locallocaltime($posttime).') | ';
+ if ($dischash{$toggkey}) {
+ $discussionitems[$idx].=' '.
+ $ctlink.' | ';
+ }
+ $discussionitems[$idx].= '
'.$message.'
';
+ if ($contrib{$idx.':history'}) {
+ my @postversions = ();
+ $discussionitems[$idx] .= '
'.&mt('This post has been edited by the author.');
+ if ($seeid) {
+ $discussionitems[$idx] .= ' '.&mt('Display all versions').'';
+ }
+ $discussionitems[$idx].='
'.&mt('Earlier version(s) were posted on: ');
+ if ($contrib{$idx.':history'} =~ m/:/) {
+ @postversions = split/:/,$contrib{$idx.':history'};
+ } else {
+ @postversions = ("$contrib{$idx.':history'}");
+ }
+ for (my $i=0; $i<@postversions; $i++) {
+ my $version = $i+1;
+ $discussionitems[$idx] .= ''.$version.'. - '.&Apache::lonlocal::locallocaltime($postversions[$i]).' ';
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ my $discussion='';
+
+ my $function = &Apache::loncommon::get_users_function();
+ my $color = &Apache::loncommon::designparm($function.'.tabbg',
+ $ENV{'user.domain'});
+ my %lt = &Apache::lonlocal::texthash(
+ 'cuse' => 'Current discussion settings',
+ 'allposts' => 'All posts',
+ 'unread' => 'New posts only',
+ 'unmark' => 'Unread only',
+ 'ondisp' => 'Once displayed',
+ 'onmark' => 'Once marked not NEW',
+ 'toggoff' => 'Off',
+ 'toggon' => 'On',
+ 'disa' => 'Posts to be displayed',
+ 'npce' => 'Posts cease to be marked "NEW"',
+ 'epcb' => 'Each post can be toggled read/unread',
+ 'chgt' => 'Change',
+ 'disp' => 'Display',
+ 'nolo' => 'Not new',
+ 'togg' => 'Toggle read/unread',
+ );
+
+ my $currdisp = $lt{'allposts'};
+ my $currmark = $lt{'onmark'};
+ my $currtogg = $lt{'toggoff'};
+ my $dispchange = $lt{'unread'};
+ my $markchange = $lt{'ondisp'};
+ my $toggchange = $lt{'toggon'};
+ my $chglink = '/adm/feedback?modifydisp='.$ressymb;
+ my $displinkA = 'onlyunread';
+ my $displinkB = 'onlyunmark';
+ my $marklink = 'markondisp';
+ my $togglink = 'toggon';
+
+ if ($markondisp) {
+ $currmark = $lt{'ondisp'};
+ $markchange = $lt{'onmark'};
+ $marklink = 'markonread';
+ }
+
+ if ($showonlyunread) {
+ $currdisp = $lt{'unread'};
+ $dispchange = $lt{'allposts'};
+ $displinkA = 'allposts';
+ }
+
+ if ($showunmark) {
+ $currdisp = $lt{'unmark'};
+ $dispchange = $lt{'unmark'};
+ $displinkA='allposts';
+ $displinkB='onlyunread';
+ $showonlyunread = 0;
+ }
+
+ if ($dischash{$toggkey}) {
+ $currtogg = $lt{'toggon'};
+ $toggchange = $lt{'toggoff'};
+ $togglink = 'toggoff';
+ }
+
+ $chglink .= '&changes='.$displinkA.'_'.$displinkB.'_'.$marklink.'_'.$togglink;
+
+ if ($newpostsflag) {
+ $chglink .= '&previous='.$prevread;
+ }
+
+ if ($visible) {
+# Print the discusssion
+ if ($outputtarget ne 'tex') {
+ my $colspan=$maxdepth+1;
+ $discussion.= qq|
+
+ |;
+ $discussion.='