--- rat/lonratedt.pm 2001/05/01 15:23:40 1.2 +++ rat/lonratedt.pm 2002/05/13 21:26:05 1.15 @@ -1,26 +1,134 @@ # The LearningOnline Network with CAPA # Edit Handler for RAT Maps +# +# $Id: lonratedt.pm,v 1.15 2002/05/13 21:26:05 www Exp $ +# +# 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/ +# # (TeX Content Handler # # 05/29/00,05/30 Gerd Kortemeyer) -# 7/1 Gerd Kortemeyer +# 7/1,6/30 Gerd Kortemeyer package Apache::lonratedt; use strict; use Apache::Constants qw(:common); +use Apache::lonnet; +use Apache::lonratsrv; -# ================================================================ Main Handler +my @order=(); +my @resources=(); -sub handler { - my $r=shift; - $r->content_type('text/html'); - $r->send_http_header; - return OK if $r->header_only; +# Mapread read maps into global arrays @links and @resources, determines status +# sets @order - pointer to resources in right order +# sets @resources - array with the resources with correct idx +# +sub mapread { + my $fn=shift; - my $url=$r->uri; + my @links; + undef @links; + undef @resources; + undef @order; + + my ($outtext,$errtext)=&Apache::lonratsrv::loadmap($fn,''); + if ($errtext) { return ($errtext,2); } + +# -------------------------------------------------------------------- Read map + foreach (split(/\<\&\>/,$outtext)) { + my ($command,$number,$content)=split(/\<\:\>/,$_); + if ($command eq 'objcont') { + $resources[$number]=$content; + } + if ($command eq 'objlinks') { + $links[$number]=$content; + } + } +# ------------------------------------------------------- Is this a linear map? + my @starters=(); + my @endings=(); + undef @starters; + undef @endings; + + foreach (@links) { + if (defined($_)) { + my ($start,$end,$cond)=split(/\:/,$_); + if ((defined($starters[$start])) || (defined($endings[$end]))) { + return + ('Map has branchings. Use advanced editor.',1); + } + $starters[$start]=1; + $endings[$end]=1; + if ($cond) { + return + ('Map has conditions. Use advanced editor.',1); + } + } + + } + for (my $i=0; $i<=$#resources; $i++) { + if (defined($resources[$i])) { + unless (($starters[$i]) || ($endings[$i])) { + return + ('Map has unconnected resources. Use advanced editor.',1); + } + } + } + +# -------------------------------------------------- This is a linear map, sort + + my $startidx=0; + my $endidx=0; + for (my $i=0; $i<=$#resources; $i++) { + if (defined($resources[$i])) { + my ($title,$url,$ext,$type)=split(/\:/,$resources[$i]); + if ($type eq 'start') { $startidx=$i; } + if ($type eq 'finish') { $endidx=$i; } + } + } + my $k=0; + my $currentidx=$startidx; + $order[$k]=$currentidx; + for (my $i=0; $i<=$#resources; $i++) { + foreach (@links) { + my ($start,$end)=split(/\:/,$_); + if ($start==$currentidx) { + $currentidx=$end; + $k++; + $order[$k]=$currentidx; + last; + } + } + if ($currentidx==$endidx) { last; } + } + return $errtext; +} +# --------------------------------------------------------- Build up RAT screen +sub ratedt { + my ($r,$url)=@_; $r->print(< @@ -37,6 +145,374 @@ sub handler { ENDDOCUMENT +} + +# ---------------------------------------------------------------- Make buttons + +sub buttons { + my $adv=shift; + my $output='
'; + if ($adv==1) { + $output.=''; + } else { + unless ($adv==2) { + $output.=''; + } + $output.=''; + } + return $output.'

'; +} + +sub smpedt { + my ($r,$errtext)=@_; + my $buttons=&buttons(2); + +# ---------------------------------------------------------- Process form input + + my @importselect=(); + my @targetselect=(); + undef @importselect; + undef @targetselect; + if (defined($ENV{'form.import'})) { + if (ref($ENV{'form.import'})) { + @importselect=sort($ENV->{'form.import'}); + } else { + @importselect=($ENV{'form.import'}); + } + } + if (defined($ENV{'form.target'})) { + if (ref($ENV{'form.target'})) { + @targetselect=sort($ENV->{'form.target'}); + } else { + @targetselect=($ENV{'form.target'}); + } + } +# ============================================================ Process commands + + my $targetdetail=$ENV{'form.targetdetail'}; + my $importdetail=$ENV{'form.curimpdetail'}; + +# ---------------------------------------------------- Importing from groupsort + if ($ENV{'form.importdetail'}) { + + $importdetail=''; + my @curimport=split(/\&/,$ENV{'form.curimpdetail'}); + + my $lastsel; + + if (defined($importselect[-1])) { + $lastsel=$importselect[-1]; + } else { + $lastsel=$#curimport; + } + + for (my $i=0;$i<=$lastsel;$i++) { + my ($name,$url)=split(/\=/,$curimport[$i]); + if ($url) { + $importdetail.='&'.&Apache::lonnet::escape($name).'='. + &Apache::lonnet::escape($url); + } + } + + $importdetail.='&'.$ENV{'form.importdetail'}; + + for (my $i=$lastsel+1;$i<=$#curimport;$i++) { + my ($name,$url)=split(/\=/,$curimport[$i]); + if ($url) { + $importdetail.='&'.&Apache::lonnet::escape($name).'='. + &Apache::lonnet::escape($url); + } + } + $importdetail=~s/\&+/\&/g; + $importdetail=~s/^\&//; + +# ------------------------------------------------------------------- Clear all + } elsif ($ENV{'form.clear'}) { + $importdetail=''; +# ------------------------------------------------------------ Discard selected + } elsif ($ENV{'form.discard'}) { + $importdetail=''; + my @curimport=split(/\&/,$ENV{'form.curimpdetail'}); + foreach (@importselect) { + $curimport[$_]=''; + } + for (my $i=0;$i<=$#curimport;$i++) { + my ($name,$url)=split(/\=/,$curimport[$i]); + if ($url) { + $importdetail.='&'.&Apache::lonnet::escape($name).'='. + &Apache::lonnet::escape($url); + } + } +# --------------------------- + } + +# ------------------------------------------------------------ Assemble windows + + my $idx=-1; + my $importwindow=join("\n",map { + $idx++; + if ($_) { + my ($name,$url)=split(/\=/,$_); + unless ($name) { $name=(split(/\//,$url))[-1]; } + unless ($name) { $name='EMPTY'; } + ''; + } + } split(/\&/,$importdetail)); + + $idx=0; + my $targetwindow=join("\n",map { + my ($name,$url)=split(/\:/,$resources[$_]); + unless ($name) { $name=(split(/\//,$url))[-1]; } + unless ($name) { $name='EMPTY'; } + $targetdetail.='&'.&Apache::lonnet::escape($name).'='. + &Apache::lonnet::escape($url); + $idx++; + ''; + } @order); + +# ----------------------------------------------------- Start simple RAT screen + $r->print(< + + + + +$buttons +$errtext +
+ + + + + + + + +
Import Target
+ + +after selected +
+ +
+ + + +
  + +
+ +Cut selected
+

+


+Paste after selected
+ +
+
+ + + +
+ +ENDSMPHEAD +} + +# ----------------------------------------------------------------- No such dir +sub nodir { + my ($r,$dir)=@_; + $dir=~s/^\/home\/\w+\/public\_html//; + $r->print(< + +

No such directory: $dir

+ + +ENDNODIR +} + +# ---------------------------------------------------------------- View Handler + +sub viewmap { + my ($r,$adv,$errtext)=@_; + $r->print(''.&buttons($adv)); + if ($errtext) { + $r->print($errtext.'
'); + } + foreach (@resources) { + if (defined($_)) { + my ($title,$url)=split(/\:/,$_); + $title=~s/\&colon\;/\:/g; + $url=~s/\&colon\;/\:/g; + unless ($title) { $title=(split(/\//,$url))[-1] }; + unless ($title) { $title='Empty'; } + if ($url) { + $r->print(''); + } + $r->print(&Apache::lonratsrv::qtescape($title)); + if ($url) { $r->print(''); } + $r->print('
'); + } + } + $r->print(''); +} + +# ================================================================ Main Handler + +sub handler { + my $r=shift; + $r->content_type('text/html'); + $r->send_http_header; + + return OK if $r->header_only; + + my $url=$r->uri; + my $fn=&Apache::lonnet::filelocation('',$url); + + my ($dir)=($fn=~/^(.+)\/[^\/]+$/); + unless (-e $dir) { + &nodir($r,$dir); + return OK; + } + +# ------------------------------------------- Determine which tools can be used + my $adv=0; + + unless ($ENV{'form.forcesmp'}) { + if ($ENV{'form.forceadv'}) { + $adv=1; + } elsif (my $fh=Apache::File->new($fn)) { + my $allmap=join('',<$fh>); + $adv=($allmap=~/\]+mode\s*\=\s*(\'|\")rat/is); + } + } + + my $errtext=''; + my $fatal=0; + +# -------------------------------------------------------------------- Load map + ($errtext,$fatal)=&mapread($fn,$errtext); + + if ($fatal==1) { $adv=1; } + +# ----------------------------------- adv==1 now means "graphical MUST be used" + + if ($ENV{'form.forceadv'}) { + &ratedt($r,$url); + } elsif ($ENV{'form.forcesmp'}) { + &smpedt($r,$errtext); + } else { + &viewmap($r,$adv,$errtext); + } return OK; }