--- rat/lonpage.pm 2000/10/02 21:33:40 1.10 +++ rat/lonpage.pm 2019/08/11 14:16:59 1.128 @@ -1,19 +1,54 @@ # The LearningOnline Network with CAPA # Page Handler # -# (TeX Content Handler +# $Id: lonpage.pm,v 1.128 2019/08/11 14:16:59 raeburn Exp $ # -# 05/29/00,05/30 Gerd Kortemeyer) -# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, -# 10/02 Gerd Kortemeyer +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ +# +### + + + package Apache::lonpage; use strict; use Apache::Constants qw(:common :http); -use Apache::lonnet(); +use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonhtmlcommon; +use Apache::lonxml(); +use Apache::lonlocal; +use Apache::lonmenu; +use Apache::lonhomework; +use Apache::lonparmset; +use Apache::lonenc(); use HTML::TokeParser; use GDBM_File; +use Apache::lonsequence; +use lib '/home/httpd/lib/perl/'; +use LONCAPA; + # -------------------------------------------------------------- Module Globals my %hash; @@ -37,48 +72,70 @@ sub euclid { sub tracetable { my ($sofar,$rid,$beenhere)=@_; my $further=$sofar; + my $randomout=0; + unless ($env{'request.role.adv'}) { + $randomout = $hash{'randomout_'.$rid}; + } unless ($beenhere=~/\&$rid\&/) { - $beenhere.=$rid.'&'; - - if (defined($hash{'is_map_'.$rid})) { - if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && - (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { - my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; - $sofar= - &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, - '&'.$frid.'&'); - $sofar++; - if ($hash{'src_'.$frid}) { - my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid}); - if (($brepriv eq '2') || ($brepriv eq 'F')) { - if (defined($rows[$sofar])) { - $rows[$sofar].='&'.$frid; - } else { - $rows[$sofar]=$frid; - } - } - } - } - } else { - $sofar++; - if ($hash{'src_'.$rid}) { - my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid}); - if (($brepriv eq '2') || ($brepriv eq 'F')) { - if (defined($rows[$sofar])) { - $rows[$sofar].='&'.$rid; - } else { - $rows[$sofar]=$rid; - } - } - } - } - - if (defined($hash{'to_'.$rid})) { - map { - my $now=&tracetable($sofar,$hash{'goesto_'.$_},$beenhere); - if ($now>$further) { $further=$now; } - } split(/\,/,$hash{'to_'.$rid}); - } + $beenhere.=$rid.'&'; + unless ($randomout) { + if (defined($hash{'is_map_'.$rid})) { + if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && + (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { + my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; + $sofar= + &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, + '&'.$frid.$beenhere); + $sofar++; + if ($hash{'src_'.$frid}) { + my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid}); + if (($brepriv eq '2') || ($brepriv eq 'F')) { + if (defined($rows[$sofar])) { + $rows[$sofar].='&'.$frid; + } else { + $rows[$sofar]=$frid; + } + } + } + } + } else { + $sofar++; + if ($hash{'src_'.$rid}) { + my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid}); + if (($brepriv eq '2') || ($brepriv eq 'F')) { + if (defined($rows[$sofar])) { + $rows[$sofar].='&'.$rid; + } else { + $rows[$sofar]=$rid; + } + } + } + } + } + + if (defined($hash{'to_'.$rid})) { + my $mincond=1; + my $next=''; + foreach (split(/\,/,$hash{'to_'.$rid})) { + my $thiscond= + &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); + if ($thiscond>=$mincond) { + if ($next) { + $next.=','.$_.':'.$thiscond; + } else { + $next=$_.':'.$thiscond; + } + if ($thiscond>$mincond) { $mincond=$thiscond; } + } + } + foreach (split(/\,/,$next)) { + my ($linkid,$condval)=split(/\:/,$_); + if ($condval>=$mincond) { + my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere); + if ($now>$further) { $further=$now; } + } + } + } } return $further; } @@ -91,37 +148,75 @@ sub handler { # ------------------------------------------- Set document type for header only if ($r->header_only) { - if ($ENV{'browser.mathml'}) { - $r->content_type('text/xml'); + if ($env{'browser.mathml'}) { + &Apache::loncommon::content_type($r,'text/xml'); } else { - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); } $r->send_http_header; return OK; } - - my $requrl=$r->uri; + + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['forceselect','launch']); + my $number_of_columns = 1; + my $requrl=$r->uri; + my $target = $env{'form.grade_target'}; + +# Short term solution: define target as 'tex_answer' when retrieving answers +# for resources in a .page when generating printouts. +# A better long-term fix would be to modify the way problem rendering, and +# answer rendering are retrieved for individual resources when printing a .page, +# so rendered problem and answer are sequential for individual resources in +# the .page +# + if ($target eq 'answer') { + if ($env{'form.answer_output_mode'} eq 'tex') { + $target = 'tex_answer'; + } + } +# &Apache::lonnet::logthis("Got a target of $target"); + if ($target eq 'meta') { + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + return OK; + } # ----------------------------------------------------------------- Tie db file - if ($ENV{'request.course.fn'}) { - my $fn=$ENV{'request.course.fn'}; + if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) { + my $fn=$env{'request.course.fn'}; if (-e "$fn.db") { - if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { + my %buttonshide; + my $hostname = $r->hostname(); + if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) { # ------------------------------------------------------------------- Hash tied my $firstres=$hash{'map_start_'.$requrl}; my $lastres=$hash{'map_finish_'.$requrl}; if (($firstres) && ($lastres)) { +# ------------------------------------------------------------- Countdown Timer + my $now = time; + my ($pagefirstaccess,%hastimeleft,%countdowndisp,%donebutton, + %donebtnextra,%buttonbytime,$donetime,$symbtosetdone); + my ($pagesymb,$courseid,$domain,$name)=&Apache::lonnet::whichuser(); + unless ($pagesymb) { + $pagesymb=&Apache::lonnet::symbread($requrl); + } + if ($pagesymb && ($courseid ne '') && ($domain ne '') && ($name ne '')) { + my %times=&Apache::lonnet::get('firstaccesstimes', + [$courseid."\0".$pagesymb], + $domain,$name); + if ($times{$courseid."\0".$pagesymb} =~ /^\d+$/) { + $pagefirstaccess = $times{$courseid."\0".$pagesymb}; + if ($pagefirstaccess && $env{'form.LC_interval_done'} eq 'true') { + $donetime = $now - $pagefirstaccess; + } + } + } + # ----------------------------------------------------------------- Render page @rows=(); - &tracetable(0,$firstres,'&'.$lastres.'&'); - if ($hash{'src_'.$lastres}) { - my $brepriv= - &Apache::lonnet::allowed('bre',$hash{'src_'.$lastres}); - if (($brepriv eq '2') || ($brepriv eq 'F')) { - $rows[$#rows+1]=''.$lastres; - } - } + &tracetable(0,$firstres,'&'); # ------------------------------------------------------------ Add to symb list @@ -130,9 +225,32 @@ sub handler { for ($i=0;$i<=$#rows;$i++) { if ($rows[$i]) { my @colcont=split(/\&/,$rows[$i]); - map { - $symbhash{$hash{'src_'.$_}}=''; - } @colcont; + foreach my $rid (@colcont) { + my ($mapid,$resid)=split(/\./,$rid); + $symbhash{$hash{'src_'.$rid}}= + [$hash{'src_'.$rid},$resid]; + if (($donetime) && ($symbtosetdone eq '')) { + my $src = $hash{'src_'.$rid}; + if ($hash{'encrypted_'.$rid}) { + $src=&Apache::lonenc::encrypted($src); + } + my ($mapid,$resid)=split(/\./,$rid); + my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src); + if ($src =~ /$LONCAPA::assess_re/) { + my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb); + if (@interval > 1) { + if (($interval[1] eq 'map') && ($pagefirstaccess)) { + my ($timelimit) = ($interval[0] =~ /^(\d+)/); + if ($timelimit) { + if ($pagefirstaccess + $timelimit > $now) { + $symbtosetdone = $symb; + } + } + } + } + } + } + } } } &Apache::lonnet::symblist($requrl,%symbhash); @@ -143,6 +261,11 @@ sub handler { my $lcm=1; my $contents=0; my $nforms=0; + my $nuploads=0; + my $ntimers=0; + my %turninpaths; + my %multiresps; + my $turninparent; my %ssibody=(); my %ssibgcolor=(); @@ -150,7 +273,9 @@ sub handler { my %ssilink=(); my %ssivlink=(); my %ssialink=(); + my %cellemb=(); + my %cellexternal=(); my $allscript=''; my $allmeta=''; @@ -159,6 +284,16 @@ sub handler { my $xmlheader=''; my $xmlbody=''; +# ---------------------------------------------------------- Handle Done button + + # Set the event timer to zero if the "done button" was clicked. + if ($donetime && $symbtosetdone) { + &Apache::lonparmset::storeparm_by_symb_inner($symbtosetdone,'0_interval', + 2,$donetime,'date_interval', + $name,$domain); + undef($env{'form.LC_interval_done'}); + } + # --------------------------------------------- Get SSI output, post parameters for ($i=0;$i<=$#rows;$i++) { @@ -166,29 +301,87 @@ sub handler { $contents++; my @colcont=split(/\&/,$rows[$i]); $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); - map { + foreach (@colcont) { my $src=$hash{'src_'.$_}; - $src=~/\.(\w+)$/; - $cellemb{$_}=Apache::lonnet::fileembstyle($1); - if ($cellemb{$_} eq 'ssi') { + my $plainsrc = $src; + my ($extension)=($src=~/\.(\w+)$/); + $cellexternal{$_}=($hash{'ext_'.$_} eq 'true:'); + if ($hash{'encrypted_'.$_}) { + $src=&Apache::lonenc::encrypted($src); + } + my ($mapid,$resid)=split(/\./,$_); + my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src); + unless ($env{'request.role.adv'}) { + $buttonshide{$symb} = &Apache::lonnet::EXT("resource.0.buttonshide",$symb); + } + $cellemb{$_}= + &Apache::loncommon::fileembstyle($extension); + if ($cellexternal{$_}) { + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $ssibody{$_} = <<ENDEXT; +<iframe src="$src" width="100%">No iframe support!</iframe> +ENDEXT + } + } elsif ($cellemb{$_} eq 'ssi') { # --------------------------------------------------------- This is an SSI cell - my $prefix=$_.'_'; - my %posthash=('request.prefix' => $prefix); - if (($ENV{'form.'.$prefix.'submit'}) - || ($ENV{'form.all_submit'})) { - map { - if ($_=~/^form.$prefix/) { - my $name=$_; - $name=~s/^form.$prefix//; - $posthash{$name}=$ENV{$_}; + my $prefix='p_'.$_.'_'; + my $idprefix= 'p_'.join('_',($mapid,$resid,'')); + my %posthash=('request.prefix' => $prefix, + 'LONCAPA_INTERNAL_no_discussion' => 'true', + 'symb' => $symb); + if (($env{'form.grade_target'} eq 'tex') || + ($env{'form.answer_output_mode'} eq 'tex')) { + $posthash{'grade_target'}=$env{'form.grade_target'}; + $posthash{'textwidth'}=$env{'form.textwidth'}; + $posthash{'problem_split'}=$env{'form.problem_split'}; + $posthash{'latex_type'}=$env{'form.latex_type'}; + $posthash{'rndseed'}=$env{'form.rndseed'}; + $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'}; + } + my $submitted=$env{'form.all_submit_pressed'}; + if (!$submitted) { + foreach my $key (keys(%env)) { + if ($key=~/^\Qform.$prefix\Esubmit_(.+)_pressed$/) { + if ($env{$key}) { + $submitted=1; + last; + } + } } - } keys %ENV; + } + if ($submitted) { + foreach my $key (keys(%env)) { + if ($key=~/^\Qform.$prefix\E/) { + my $name=$key; + $name=~s/^\Qform.$prefix\E//; + $posthash{$name}=$env{$key}; + } + } + if ($env{'form.all_submit_pressed'}) { + $posthash{'all_submit'}='yes'; + } } my $output=Apache::lonnet::ssi($src,%posthash); + $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs; + if (($target eq 'tex') || ($target eq 'tex_answer')) { + $output =~ s/^([^&]+)\\begin\{document}//; + $output =~ s/\\end\{document}//; +# $output = '\parbox{\minipagewidth}{ '.$output.' }'; + #some additional cleanup necessary for LateX (due to limitations of table environment + $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g; + } + my $matheditor; + if ($output =~ /\Qjavascript:LC_mathedit_HWVAL_\E/) { + $matheditor = 'dragmath'; + } elsif ($output =~ /LCmathField/) { + $matheditor = 'lcmath'; + } my $parser=HTML::TokeParser->new(\$output); my $token; + my $thisdir=$src; my $bodydef=0; my $thisxml=0; + my @rlinks=(); if ($output=~/\?xml/) { $isxml=1; $thisxml=1; @@ -196,9 +389,22 @@ sub handler { /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si; $xmlheader=$1; } - while (($bodydef==0) && - ($token=$parser->get_token)) { - if ($token->[1] eq 'body') { + while ($token=$parser->get_token) { + if ($token->[0] eq 'S') { + if ($token->[1] eq 'a') { + if ($token->[2]->{'href'}) { + $rlinks[$#rlinks+1]= + $token->[2]->{'href'}; + } + } elsif ($token->[1] eq 'img') { + $rlinks[$#rlinks+1]= + $token->[2]->{'src'}; + } elsif ($token->[1] eq 'embed') { + $rlinks[$#rlinks+1]= + $token->[2]->{'src'}; + } elsif ($token->[1] eq 'base') { + $thisdir=$token->[2]->{'href'}; + } elsif ($token->[1] eq 'body') { $bodydef=1; $ssibgcolor{$_}=$token->[2]->{'bgcolor'}; $ssitext{$_}=$token->[2]->{'text'}; @@ -208,119 +414,456 @@ sub handler { if ($thisxml) { $xmlbody=$token->[4]; } - } - if ($token->[1] eq 'meta') { + } elsif ($token->[1] eq 'meta') { + if ($token->[4] !~ m:/>$:) { $allmeta.="\n".$token->[4].'</meta>'; - } - if ($token->[1] eq 'script') { + } else { + $allmeta.="\n".$token->[4]; + } + } elsif (($token->[1] eq 'script') && + ($bodydef==0)) { $allscript.="\n\n" .$parser->get_text('/script'); } - } + } + } if ($output=~/\<body[^\>]*\>(.*)/si) { $output=$1; } $output=~s/\<\/body\>.*//si; if ($output=~/\<form/si) { + my $hastimer; $nforms++; $output=~s/\<form[^\>]*\>//gsi; $output=~s/\<\/form[^\>]*\>//gsi; + if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) { + $nuploads++; + } + if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*accessbutton/) { + $ntimers++; + $hastimer = 1; + } + $output=~ + s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi; + $output=~ + s/\<((?:input|select|button|textarea)[^\>]+)id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 id="$idprefix$2" $3\>/gsi; + $output=~ + s/(\Qthis.form.elements['\E)(HW(?:VAL|CHK)_[^']+\'\]\.(?:value=\'|checked))/$1$prefix$2/gsi; + if ($hastimer) { + $output=~ + s/\<(input[^\>]+name=\Q"$prefix\Eaccessbutton"[^\>]+)(?:\Qdocument.markaccess.submit();\E)([^\>]*)\>/\<$1pageTimer(this.form,'$prefix')$2\>/gsi; + $output=~ s/\<(input[^\>]+name=\Q"$prefix\Emarkaccess"[^\>]+value=["'])(?:yes)(['"][^\>]*)\>/\<$1$2\>/gsi; + } + if ($matheditor eq 'dragmath') { + $output=~ + s/(\Qjavascript:LC_mathedit_\E)(HWVAL_)([^'"]+?)(\(['"]*)(\QHWVAL_\E\3['"]\)\;void\(0\)\;)/$1$idprefix$2$3$4$idprefix$5/g; + $output=~ + s/(function\s+LC_mathedit_)(HWVAL_)([^'"]+?)(\s+\(LCtextline\))/$1$idprefix$2$3$4/g; + } elsif ($matheditor eq 'lcmath') { + $output=~ + s/(var\s+LCmathField\s+=\s+document\.getElementById\(['"])([^'"]+?)(['"]\)\;)/$1$idprefix$2$3/g; + } + $output=~ + s/(\Q<div id="msg_\E)(\Qsubmit_\E)([^"]*)(\Q" style="display:none">\E)/<input type="hidden" name="$prefix$2$3_pressed" id="$idprefix$2$3_pressed" value="" \/>$1$idprefix$2$3$4/g; + $output=~ + s/(\Q<td class="LC_status_\E)(\Qsubmit_\E)([^\"]*)(\s*[^\"]*"\>)/$1$idprefix$2$3$4/g; + if ($nuploads) { + ($turninpaths{$prefix},$multiresps{$prefix}) = + &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'}); + if ($turninparent eq '') { + $turninparent = $turninpaths{$prefix}; + $turninparent =~ s{(/[^/]+)$}{}; + } + } + $output=~ + s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi; + $output=~ + s/\<(input[^\>]+\Qonfocus=\"javascript:disableAutoComplete\E)\(\'([^\']+)\'\)(;\")/\<$1('$idprefix$2')$3/gsi; + unless ($hastimer) { + if ($plainsrc =~ /$LONCAPA::assess_re/) { + %Apache::lonhomework::history = + &Apache::lonnet::restore($symb,$courseid,$domain,$name); + my $type = 'problem'; + if ($extension eq 'task') { + $type = 'Task'; + } + my ($status,$accessmsg,$slot_name,$slot) = + &Apache::lonhomework::check_slot_access('0',$type,$symb); + undef(%Apache::lonhomework::history); + my $probstatus = &Apache::lonnet::EXT("resource.0.problemstatus",$symb); + if (($status eq 'CAN_ANSWER') || (($status eq 'CANNOT_ANSWER') && + (($probstatus eq 'no') || ($probstatus eq 'no_feedback_ever'))) || + (($status eq 'NOT_YET_VIEWED') && ($posthash{'markaccess'} eq 'yes'))) { + my ($slothastime,$timerhastime); + if ($slot_name ne '') { + if (ref($slot) eq 'HASH') { + if (($slot->{'starttime'} < $now) && + ($slot->{'endtime'} > $now)) { + $slothastime = $now - $slot->{'endtime'}; + } + } + } + my $duedate = &Apache::lonnet::EXT("resource.0.duedate",$symb); + my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb); + if (@interval > 1) { + my $first_access; + if ($interval[1] eq 'map') { + my $ignorecache; + if ($env{'form.'.$prefix.'markaccess'} eq 'yes') { + $ignorecache = 1; + } + $first_access=&Apache::lonnet::get_first_access($interval[1],undef,$pagesymb,$ignorecache); + if (($first_access) && (!$pagefirstaccess)) { + $pagefirstaccess = $first_access; + } + } else { + $first_access=&Apache::lonnet::get_first_access($interval[1],$symb); + } + if ($first_access > 0) { + my ($timelimit) = ($interval[0] =~ /^(\d+)/); + if ($timelimit) { + my $timeremains = $timelimit + $first_access - $now; + if ($timeremains > 0) { + $timerhastime = $timeremains; + } + } + } + } + if (($duedate && $duedate > $now) || + (!$duedate && $timerhastime > 0) || + ($slot_name ne '' && $slothastime)) { + if ((@interval > 1 && $timerhastime) || + ($type eq 'Task' && $slothastime)) { + $countdowndisp{$symb} = 'inline'; + if ((@interval > 1) && ($timerhastime)) { + $hastimeleft{$symb} = $timerhastime; + if ($pagefirstaccess) { + my ($timelimit,$usesdone,$donebuttontext,$proctor,$secret); + ($timelimit,my $donesuffix) = split(/_/,$interval[0],2); + if ($donesuffix =~ /^done\:([^\:]+)\:(.*)$/) { + $usesdone = 'done'; + $donebuttontext = $1; + (undef,$proctor,$secret) = split(/_/,$2); + } elsif ($donesuffix =~ /^done(|_.+)$/) { + $donebuttontext = &mt('Done'); + ($usesdone,$proctor,$secret) = split(/_/,$donesuffix); + } + if ($usesdone eq 'done') { + $donebutton{$symb} = $timelimit; + push(@{$buttonbytime{$timelimit}},$symb); + $donebtnextra{$symb} = { + text => $donebuttontext, + proctor => $proctor, + secret => $secret, + type => $interval[1], + }; + } + } + } else { + $hastimeleft{$symb} = $slothastime; + } + } else { + $hastimeleft{$symb} = $duedate - $now; + $countdowndisp{$symb} = 'none'; + } + unless ($donebutton{$symb}) { + $donebutton{$symb} = 0; + } + } + } + } + } } + $thisdir=~s/\/[^\/]*$//; + foreach (@rlinks) { + unless (($_=~/^https?\:\/\//i) || + ($_=~/^\//) || + ($_=~/^javascript:/i) || + ($_=~/^mailto:/i) || + ($_=~/^\#/)) { + my $newlocation= + &Apache::lonnet::hreflocation($thisdir,$_); + $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/; + } + } +# -------------------------------------------------- Deal with Applet codebases + $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei; $ssibody{$_}=$output; - # ---------------------------------------------------------------- End SSI cell } - } @colcont; + } } } unless ($contents) { - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; - $r->print('<html><body>Empty page.</body></html>'); + $r->print(&Apache::loncommon::start_page(undef,undef, + {'force_register' => 1,})); + $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. '); + $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course'). + &Apache::loncommon::end_page()); } else { # ------------------------------------------------------------------ Build page # ---------------------------------------------------------------- Send headers - if ($isxml) { - $r->content_type('text/xml'); - $r->send_http_header; - $r->print($xmlheader); - } else { - $r->content_type('text/html'); - $r->send_http_header; - $r->print('<html>'); - } + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + if ($isxml) { + &Apache::loncommon::content_type($r,'text/xml'); + } else { + &Apache::loncommon::content_type($r,'text/html'); + } + $r->send_http_header; # ------------------------------------------------------------------------ Head - $r->print("\n<head>\n".$allmeta); - if ($allscript) { - $r->print("\n<script>\n".$allscript."\n</script>\n"); - } - $r->print("\n</head>\n"); + if ($allscript) { + $allscript = + "\n".'<script type="text/javascript">'."\n". + $allscript. + "\n</script>\n"; + } + if (($nforms) && ($nuploads)) { + $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps). + '<script type="text/javascript" '. + 'src="/res/adm/includes/file_upload.js"></script>'; + } + if (($nforms) && (&Apache::lonhtmlcommon::htmlareabrowser())) { + my %textarea_args = ( + dragmath => 'math', + ); + $allscript .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args); + } + if ($ntimers) { + $allscript .= '<script type="text/javascript">'."\n". + '// <![CDATA['."\n". + 'function pageTimer(form,prefix) {'."\n". + " form.elements[prefix+'markaccess'].value = 'yes';\n". + " form.submit();\n". + '}'."\n". + '// ]]>'. + "\n</script>\n"; + } + if (keys(%hastimeleft)) { + my (%uniquetimes,%uniquedisplays); + foreach my $item (values(%hastimeleft)) { + if (exists($uniquetimes{$item})) { + $uniquetimes{$item} ++; + } else { + $uniquetimes{$item} = 1; + } + } + if (scalar(keys(%uniquetimes)) == 1) { + my (%uniquedisplays,%uniquedones,$currdisp,$donebuttontime, + $donebuttonextras); + if (keys(%countdowndisp)) { + foreach my $item (values(%countdowndisp)) { + if (exists($uniquedisplays{$item})) { + $uniquedisplays{$item} ++; + } else { + $uniquedisplays{$item} = 1; + } + } + my @countdowndisplay = keys(%uniquedisplays); + if (scalar(@countdowndisplay) == 1) { + $currdisp = $countdowndisplay[0]; + } + } + if (keys(%donebutton)) { + foreach my $item (values(%donebutton)) { + if (exists($uniquedones{$item})) { + $uniquedones{$item} ++; + } else { + $uniquedones{$item} = 1; + } + } + my @donebuttons = sort { $ <=> $b } (keys(%uniquedones)); + if (scalar(@donebuttons) == 1) { + if ($donebuttons[0]) { + $donebuttontime = $donebuttons[0]; + if (ref($buttonbytime{$donebuttontime}) eq 'ARRAY') { + $donebuttonextras = $donebtnextra{$buttonbytime{$donebuttontime}->[0]}; + } + } + } + } + &add_countdown_timer($currdisp,$donebuttontime,$donebuttonextras); + } + } + my $pagebuttonshide; + if (keys(%buttonshide)) { + my %uniquebuttonhide; + foreach my $item (values(%buttonshide)) { + if (exists($uniquebuttonhide{$item})) { + $uniquebuttonhide{$item} ++; + } else { + $uniquebuttonhide{$item} = 1; + } + } + if (keys(%uniquebuttonhide) == 1) { + if (lc((keys(%uniquebuttonhide))[0]) eq 'yes') { + $pagebuttonshide = 'yes'; + } + } + } # ------------------------------------------------------------------ Start body - if ($isxml) { - $r->print($xmlbody); - } else { - $r->print('<body bgcolor="#FFFFFF">'); - } + $r->print(&Apache::loncommon::start_page(undef,$allscript, + {'force_register' => 1, + 'bgcolor' => '#ffffff', + 'hide_buttons' => $pagebuttonshide})); # ------------------------------------------------------------------ Start form - if ($nforms) { - $r->print('<form method="post" action="'. - $requrl.'">'); - } + if ($nforms) { + my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"'; + if ($nuploads) { + my $multi; + if ($nuploads > 1) { + $multi = 1; + } + $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"'; + } + $fmtag .= ' action="'. + &Apache::lonenc::check_encrypt($requrl) + .'" id="LC_page">'; + $r->print($fmtag); + } + } elsif (($target eq 'tex') || ($target eq 'tex_answer')) { + # I think this is not needed as the header + # will be put in for each of the page parts + # by the londefdef.pm now that we are opening up + # the parts of a page. + #$r->print('\documentclass{article} + # \newcommand{\keephidden}[1]{} + # \usepackage[dvips]{graphicx} + # \usepackage{epsfig} + # \usepackage{calc} + # \usepackage{longtable} + # \begin{document}'); + } # ----------------------------------------------------------------- Start table - $r->print('<table cols="'.$lcm.'" border="0">'); + if (($target eq 'tex') || ($target eq 'tex_answer')) { +# # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead '); + if ($number_of_columns le $lcm) {$number_of_columns=$lcm;}; + } else { + $r->print('<table width="100%" cols="'.$lcm.'" border="0">'); + } +# generate rows for ($i=0;$i<=$#rows;$i++) { if ($rows[$i]) { - $r->print("\n<tr>"); + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print("\n<tr>"); + } my @colcont=split(/\&/,$rows[$i]); my $avespan=$lcm/($#colcont+1); for ($j=0;$j<=$#colcont;$j++) { my $rid=$colcont[$j]; - $r->print('<td colspan="'.$avespan.'"'); - if ($cellemb{$rid} eq 'ssi') { - if ($ssibgcolor{$rid}) { - $r->print(' bgcolor="'. - $ssibgcolor{$rid}.'"'); - } - $r->print('><font'); - if ($ssitext{$rid}) { - $r->print(' text="'.$ssitext{$rid}.'"'); - } - if ($ssilink{$rid}) { - $r->print(' link="'.$ssilink{$rid}.'"'); - } - if ($ssitext{$rid}) { - $r->print(' vlink="'.$ssivlink{$rid}.'"'); - } - if ($ssialink{$rid}) { - $r->print(' alink="'.$ssialink{$rid}.'"'); - } - - $r->print('>'.$ssibody{$rid}.'</font>'); - } elsif ($cellemb{$rid} eq 'img') { - $r->print('><img src="'. - $hash{'src_'.$rid}.'"></img>'); + my $metainfo =&get_buttons(\%hash,$rid,\%buttonshide,$hostname).'<br />'; + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print('<td colspan="'.$avespan.'"'); + } + if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) { + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + if ($ssibgcolor{$rid}) { + $r->print(' bgcolor="'. + $ssibgcolor{$rid}.'"'); + } + $r->print('>'.$metainfo.'<font'); + + if ($ssitext{$rid}) { + $r->print(' text="'.$ssitext{$rid}.'"'); + } + if ($ssilink{$rid}) { + $r->print(' link="'.$ssilink{$rid}.'"'); + } + if ($ssitext{$rid}) { + $r->print(' vlink="'.$ssivlink{$rid}.'"'); + } + if ($ssialink{$rid}) { + $r->print(' alink="'.$ssialink{$rid}.'"'); + } + $r->print('>'); + } + unless (($cellexternal{$rid}) && + ($target eq 'tex') && ($target eq 'tex_answer')) { + $r->print($ssibody{$rid}); + } + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print('</font>'); + } + if ($env{'course.'. + $env{'request.course.id'}. + '.pageseparators'} eq 'yes') { + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print('<hr />'); + } + } + } elsif ($cellemb{$rid} eq 'img') { + $r->print('>'.$metainfo.'<img src="'. + $hash{'src_'.$rid}.'" />'); + } elsif ($cellemb{$rid} eq 'emb') { + $r->print('>'.$metainfo.'<embed src="'. + $hash{'src_'.$rid}.'"></embed>'); + } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) { + $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'); + unless ($cellemb{$rid} eq 'wrp') { + $r->print(&mt('It is recommended that you use an up-to-date virus scanner before handling this file.')); + } + $r->print('</p><p><table>'. + &Apache::londocs::entryline(0, + &mt("Click to download or use your browser's Save Link function"), + '/'.&Apache::lonnet::declutter($hash{'src_'.$rid})). + '</table></p><br />'); + } + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print('</td>'); + } else { +# for (my $incol=1;$incol<=$avespan;$incol++) { +# $r->print(' & '); +# } } - $r->print('</td>'); } - $r->print('</tr>'); + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print('</tr>'); + } else { +# $r->print('REMOVETHEHEADOFLONGTABLE\\\\'); + } } } - $r->print("\n</table>"); + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print("\n</table>"); + } else { +# $r->print('\end{longtable}\strut'); + } # ---------------------------------------------------------------- Submit, etc. if ($nforms) { + my $class; + if ($nforms > 1) { + $class = ' class="LC_hwk_submit"'; + if ($ntimers) { + $nforms = 1; + $class = ''; + } + } $r->print( - '<input name="all_submit" value="Submit All" type="'. - (($nforms>1)?'submit':'hidden').'"></input></form>'); + '<input name="all_submit" value="'.&mt('Submit All').'" type="'. + (($nforms>1)?'submit':'hidden').'"'.$class.' id="all_submit" />'. + '<input type="hidden" name="all_submit_pressed" '. + 'id="all_submit_pressed" value="" />'. + '<div id="msg_all_submit" style="display:none">'. + &mt('Processing your submission ...').'</div></form>'); } - $r->print('</body></html>'); + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $r->print(&Apache::loncommon::end_page({'discussion' + => 1,})); + } else { + $r->print('\end{document}'.$number_of_columns); + } + &Apache::lonnet::symblist($requrl,%symbhash); + my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread()); + &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]); # -------------------------------------------------------------------- End page } # ------------------------------------------------------------- End render page } else { - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; - $r->print('<html><body>Page undefined.</body></html>'); + &Apache::lonsequence::viewmap($r,$requrl); } # ------------------------------------------------------------------ Untie hash unless (untie(%hash)) { @@ -333,16 +876,289 @@ sub handler { } } } - $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; - return HTTP_NOT_ACCEPTABLE; + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + &Apache::lonsequence::viewmap($r,$requrl); + return OK; +} + +sub get_buttons { + my ($hash,$rid,$buttonshide,$hostname) = @_; + + my $metainfo = ''; + my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid}); + my ($mapid,$resid)=split(/\./,$rid); + my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid}, + $resid, + $hash->{'src_'.$rid}); + unless ($env{'request.role.adv'}) { + if ($buttonshide->{$symb} eq 'yes') { + return; + } + } + if ($hash->{'encrypted_'.$rid}) { + $symb=&Apache::lonenc::encrypted($symb); + $esrc=&Apache::lonenc::encrypted($esrc); + } + if ($hash->{'src_'.$rid} !~ m-^/uploaded/- + && $hash->{'src_'.$rid} !~ m{^https?://} + && !$env{'request.enc'} + && ($env{'request.role.adv'} + || !$hash->{'encrypted_'.$rid})) { + $metainfo .='<a name="'.&escape($symb).'" />'. + '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" target="LONcatInfo">'. + '<img src="/res/adm/pages/catalog.png" class="LC_icon"'. + ' alt="'.&mt('Show Metadata').'"'. + ' title="'.&mt('Show Metadata').'" />'. + '</a>'; + } + if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) && + ($hash->{'src_'.$rid} !~ m{^https?://})) { + $metainfo .= '<a href="/adm/evaluate?postdata='. + &escape($esrc). + '" target="LONcatInfo">'. + '<img src="/res/adm/pages/eval.png" class="LC_icon"'. + ' alt="'.&mt('Provide my evaluation of this resource').'"'. + ' title="'.&mt('Provide my evaluation of this resource').'" />'. + '</a>'; + } + if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) && + ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) { + + if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) { + $metainfo.= + '<a href="/adm/grades?symb='.&escape($symb). +# '&command=submission" target="LONcatInfo">'. + '&command=submission">'. + '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'. + ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'. + ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'. + '</a>'. + '<a href="/adm/grades?symb='.&escape($symb). +# '&command=gradingmenu" target="LONcatInfo">'. + '&command=gradingmenu">'. + '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'. + ' alt="'.&mt('Content Grades').'"'. + ' title="'.&mt('Content Grades').'" />'. + '</a>'; + } + if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) { + $metainfo.= + '<a href="/adm/parmset?symb='.&escape($symb). +# '" target="LONcatInfo">'. + '" >'. + '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'. + ' alt="'.&mt('Content Settings').'"'. + ' title="'.&mt('Content Settings').'" />'. + '</a>'; + } + } + if ($env{'request.course.id'}) { + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my $file=&Apache::lonnet::declutter($hash->{'src_'.$rid}); + my $editbutton = ''; + if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) { + my ($cfile,$home,$switchserver,$forceedit,$forceview) = + &Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb); + if ($cfile ne '') { + my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver, + $forceedit,1,$symb,undef, + &escape($env{'form.title'}), + $hostname); + if ($jscall) { + $editbutton = 1; + my $icon = 'pcstr.png'; + my $label = &mt('Edit'); + my $title = &mt('Edit this resource'); + my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'. + ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />'; + $metainfo .= ' <a href="javascript:'.$jscall.';">'.$pic.'</a>'; + } + } + } + if ((!$editbutton) && ($file=~/$LONCAPA::assess_re/)) { + my $url = &Apache::lonnet::clutter($file); + my $viewsrcbutton; + if ((&Apache::lonnet::allowed('cre','/')) && + (&Apache::lonnet::metadata($url,'sourceavail') eq 'open')) { + $viewsrcbutton = 1; + } elsif (&Apache::lonnet::allowed('vxc',$env{'request.course.id'})) { + if ($url =~ m{^\Q/res/$cdom/\E($LONCAPA::match_username)/}) { + my $auname = $1; + if (($env{'request.course.adhocsrcaccess'} ne '') && + (grep(/^\Q$auname\E$/,split(/,/,$env{'request.course.adhocsrcaccess'})))) { + $viewsrcbutton = 1; + } + } + } + if ($viewsrcbutton) { + my $icon = 'pcstr.png'; + my $label = &mt('View Source'); + my $title = &mt('View source code'); + my $jsrid = $rid; + $jsrid =~ s/\./_/g; + my $showurl = &escape(&Apache::lonenc::check_encrypt($url)); + my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'. + ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />'; + $metainfo .= ' <a href="javascript:open_source_'.$jsrid.'();">'.$pic.'</a>'."\n". + '<script type="text/javascript">'."\n". + "function open_source_$jsrid() {\n". + " sourcewin=window.open('/adm/source?inhibitmenu=yes&viewonly=1&filename=$showurl','LONsource',". + "'height=500,width=600,resizable=yes,location=no,menubar=no,toolbar=no,scrollbars=yes');\n". + "}\n". + "</script>\n"; + } + } + } + return $metainfo; } +sub add_countdown_timer { + my ($currdisp,$donebuttontime,$donebuttonextras) = @_; + my ($collapse,$expand,$alttxt,$title,$donebutton); + if ($currdisp eq 'inline') { + $collapse = '► '; + } else { + $expand = '◄ '; + } + if ($donebuttontime) { + my ($type,$proctor,$donebuttontext); + if (ref($donebuttonextras) eq 'HASH') { + $proctor = $donebuttonextras->{'proctor'}; + $donebuttontext = $donebuttonextras->{'text'}; + $type = $donebuttonextras->{'type'}; + } else { + $donebuttontext = &mt('Done'); + $type = 'map'; + } + $donebutton = + &Apache::lonmenu::done_button_js($type,'','',$proctor,$donebuttontext); + } + unless ($env{'environment.icons'} eq 'iconsonly') { + $alttxt = &mt('Timer'); + $title = $alttxt.' '; + } + my $desc = &mt('Countdown to due date/time'); + my $output = <<END; +$donebutton +<a href="javascript:toggleCountdown();" class="LC_menubuttons_link"> +<span id="ddcountcollapse" class="LC_menubuttons_inline_text"> +$collapse +</span></a> +<span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span> +<a href="javascript:toggleCountdown();" class="LC_menubuttons_link"> +<span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span> +<img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a> +END + &Apache::lonhtmlcommon::clear_breadcrumb_tools(); + &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$output); + return; +} + + 1; __END__ +=head1 NAME + +Apache::lonpage - Page Handler + +=head1 SYNOPSIS + +Invoked by /etc/httpd/conf/srm.conf: + + <LocationMatch "^/res/.*\.page$> + SetHandler perl-script + PerlHandler Apache::lonpage + </LocationMatch> + +=head1 INTRODUCTION + +This module renders a .page resource. + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + +=head1 HANDLER SUBROUTINE + +This routine is called by Apache and mod_perl. + +=over 4 + +=item * + +set document type for header only + +=item * + +tie db file + +=item * + +render page + +=item * + +add to symb list + +=item * + +page parms + +=item * + +Get SSI output, post parameters + +=item * + +SSI cell rendering + +=item * + +Deal with Applet codebases + +=item * + +Build page + +=item * + +send headers + +=item * + +start body + +=item * + +start form + +=item * + +start table + +=item * + +submit element, etc, render page, untie hash + +=back + +=head1 OTHER SUBROUTINES + +=over 4 + +=item * + +euclid() : Euclid's method for determining the greatest common denominator. + +=item * +tracetable() : Build page table. +=back +=cut