--- rat/lonratedt.pm 2002/06/24 14:12:04 1.31 +++ rat/lonratedt.pm 2003/12/12 15:16:35 1.49 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Edit Handler for RAT Maps # -# $Id: lonratedt.pm,v 1.31 2002/06/24 14:12:04 www Exp $ +# $Id: lonratedt.pm,v 1.49 2003/12/12 15:16:35 sakharuk Exp $ # # Copyright Michigan State University Board of Trustees # @@ -32,14 +32,151 @@ package Apache::lonratedt; +=pod + +=head1 NAME + +Apache::lonratedt: advanced resource assembly tool + +=head1 SYNOPSIS + +lonratedt provides the routines and the handler for the Advanced + Resource Assembly Tool (RAT), and ties the various pieces together + with Javascript. + +=head1 OVERVIEW + +=head2 Map Representation + +=begin latex + +% +\begin{figure} +\begin{center}\includegraphics[% + width=0.55\paperwidth,bb = 0 0 200 100, draft, type=eps]{Map_Example}\end{center} + + +\caption{\label{Map_In_Advanced_Editor}Example of a Map in the Advanced Editor} +\end{figure} +% +\begin{figure} +\begin{lyxcode} + + +~~ + +~~~~ + +~~ + +~~~~ + +~~ + +~~~~ + +~~ + +~~~~ + +~~ + +~~~~ + +~~ + +~~~~ + +~~ + +~~ + +~~ + +~~ + +~~ +\end{lyxcode} + +\caption{\label{XML}XML for Map in Figure \ref{Map_In_Advanced_Editor}} +\end{figure} + +=end latex + +Fig. "XML for Map in Figure" shows the XML representation of the +resource map shown in Fig. "Example of a Map in the Advanced Editor", +which is the format in which maps are stored. In the figure, however, +additional graphical map layout information generated by the Advanced +Resource Assembly Tool is not displayed. This graphical information is +optional to re-generate the same graphical layout when the map is +brought up again in the Resource Assembly Tool, and is not needed for +any other system functionality. + +Maps can be generated by tools other than the Resource Assembly +Tool. In particular, an author might have some other representation of +a course sequence, which can be converted into a map using scripts. If +this map then were to be brought up in the Resource Assembly Tool, the +Tool would automatically generate a graphical layout for it. Each +entry of the map (resources, conditions and links) is stored in a +separate tag. + +Resources and conditionsX have to have unique ID +numbers. These numbers are automatically generated by the Resource +Assembly Tool when the entry is first created, or added to the entries +when a map generated outside the Resource Assembly Tool is first +retrieved. They can also be assigned by custom scripts or added in by +hand. + +In the XML example, entry 1 is the start resource of the map. When +this map is accessed, the source (src) URL of this tag will be the +first resource rendered. Entry 2 is the finish resource of this +map. This resource will be the last resource in the sequence of +resources. Entry 6 is a problem resource with the given URL and title, +as well as the priority "mandatory". Entry 19 is a condition, which is +used by the link between entries 6, the problem, and 9, a +sequence. I + +=cut + use strict; use Apache::Constants qw(:common); use Apache::lonnet; use Apache::lonratsrv; use Apache::lonsequence; +use Apache::loncommon; +use Apache::lonlocal; +use File::Copy; -my @order; -my @resources; +use vars qw(@order @resources); # Mapread read maps into global arrays @links and @resources, determines status @@ -69,7 +206,7 @@ sub mapread { $links[$number]=$content; } if ($command eq 'objparms') { - return('Map has resource parameters. Use advanced editor.',1); + return(&mt('Map has resource parameters. Use advanced editor.'),1); } } # ------------------------------------------------------- Is this a linear map? @@ -83,13 +220,13 @@ sub mapread { my ($start,$end,$cond)=split(/\:/,$_); if ((defined($starters[$start])) || (defined($endings[$end]))) { return - ('Map has branchings. Use advanced editor.',1); + (&mt('Map has branchings. Use advanced editor.'),1); } $starters[$start]=1; $endings[$end]=1; if ($cond) { return - ('Map has conditions. Use advanced editor.',1); + (&mt('Map has conditions. Use advanced editor.'),1); } } @@ -98,11 +235,16 @@ sub mapread { if (defined($resources[$i])) { unless (($starters[$i]) || ($endings[$i])) { return - ('Map has unconnected resources. Use advanced editor.',1); + (&mt('Map has unconnected resources. Use advanced editor.'),1); } } } - +# ---------------------------------------------- Did we just read an empty map? + if ($#resources<1) { + undef $resources[0]; + $resources[1]=':::start'; + $resources[2]=':::finish'; + } # -------------------------------------------------- This is a linear map, sort my $startidx=0; @@ -272,12 +414,12 @@ sub buttons { my $adv=shift; my $output='
'; if ($adv==1) { - $output.=''; + $output.=''; } else { unless ($adv==2) { - $output.=''; + $output.=''; } - $output.=''; + $output.=''; } return $output.'

'; } @@ -299,6 +441,7 @@ sub pastetarget { my $ext='false'; if ($url=~/^http\:\/\//) { $ext='true'; } $url=~s/\:/\:/g; + $name=~s/\:/\:/g; $resources[$idx]=$name.':'.$url.':'.$ext.':normal:res'; } } @@ -311,21 +454,56 @@ sub pastetarget { # modifies @resources sub startfinish { +# Remove all start and finish foreach (@order) { my ($name,$url,$ext)=split(/\:/,$resources[$_]); if ($url=~/http\&colon\:\/\//) { $ext='true'; } $resources[$_]=$name.':'.$url.':'.$ext.':normal:res'; } +# Garbage collection + my $stillchange=1; + while (($#order>1) && ($stillchange)) { + $stillchange=0; + for (my $i=0;$i<=$#order;$i++) { + my ($name,$url,$ext)=split(/\:/,$resources[$order[$i]]); + unless ($url) { +# Take out empty resource + for (my $j=$i+1;$j<=$#order;$j++) { + $order[$j-1]=$order[$j]; + } + $#order--; + $stillchange=1; + last; + } + } + } +# Put in a start resource my ($name,$url,$ext)=split(/\:/,$resources[$order[0]]); $resources[$order[0]]=$name.':'.$url.':'.$ext.':start:res'; - my ($name,$url,$ext)=split(/\:/,$resources[$order[$#order]]); +# Make sure this has at least start and finish + if ($#order==0) { + $resources[$#resources+1]='::false'; + $order[1]=$#resources; + } +# Make the last one a finish resource + ($name,$url,$ext)=split(/\:/,$resources[$order[$#order]]); $resources[$order[$#order]]=$name.':'.$url.':'.$ext.':finish:res'; } # ------------------------------------------------------------------- Store map sub storemap { - my $fn=shift; + my $realfn=shift; + my $fn=$realfn; +# unless this is forced to work from the original file, use a temporary file +# instead + unless (shift) { + $fn=$realfn.'.tmp'; + unless (-e $fn) { + copy($realfn,$fn); + } + } +# store data either into tmp or real file &startfinish(); my $output='graphdef<:>no'; my $k=1; @@ -347,12 +525,138 @@ sub storemap { &Apache::lonratsrv::loadmap($fn,&Apache::lonratsrv::savemap($fn,'')); } +sub editscript { + my $mode=shift; + return(<'.&mt('You are working with an unsaved version of your map.').'
'; + my ($errtext,$fatal)=&mapread($tmpfn,''); + } # ---------------------------------------------------------- Process form input my @importselect=(); @@ -539,11 +843,40 @@ sub smpedt { } &pastetarget($lastsel,@newsequence); &storemap(&Apache::lonnet::filelocation('',$url)); -# ------------------------------------------------ +# -------------------------------------------------------------------- Move up + } elsif ($ENV{'form.moveup'}) { + foreach (sort @targetselect) { + if ($_-1>0) { + my $movethis=$order[$_-1]; + $order[$_-1]=$order[$_-2]; + $order[$_-2]=$movethis; + } + } + &storemap(&Apache::lonnet::filelocation('',$url)); +# ------------------------------------------------------------------ Move down + } elsif ($ENV{'form.movedown'}) { + foreach (reverse sort @targetselect) { + if ($_-1<$#order) { + my $movethis=$order[$_-1]; + $order[$_-1]=$order[$_]; + $order[$_]=$movethis; + } + } + &storemap(&Apache::lonnet::filelocation('',$url)); +# --------------------------------------------------------------------- Rename + } elsif ($ENV{'form.renameres'}) { + my $residx=$Apache::lonratedt::order[$ENV{'form.renameidx'}-1]; + my ($name,@resrest)=split(/\:/,$Apache::lonratedt::resources[$residx]); + $name=$ENV{'form.renametitle'}; + $name=~s/\:/\&colon\;/g; + $Apache::lonratedt::resources[$residx]=$name.':'.join(':',@resrest); + &storemap(&Apache::lonnet::filelocation('',$url)); } # ------------------------------------------------------------ Assemble windows my $idx=-1; + $importdetail='&'.$importdetail; + $importdetail=~s/^\&+/\&/; my $importwindow= ''. join("\n",map { @@ -558,8 +891,9 @@ sub smpedt { } split(/\&/,$importdetail)); $idx=0; + $targetdetail=''; my $targetwindow= - ''. + ''. join("\n",map { my ($name,$url)=split(/\:/,$resources[$_]); unless ($name) { $name=(split(/\//,$url))[-1]; } @@ -567,116 +901,39 @@ sub smpedt { $targetdetail.='&'.&Apache::lonnet::escape($name).'='. &Apache::lonnet::escape($url); $idx++; + $name=~s/\:/\:/g; ''; } @order); # ----------------------------------------------------- Start simple RAT screen + my $editscript=&editscript('simple'); + my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1); + my %lt=&Apache::lonlocal::texthash( + 'sa' => 'Save', + 'nt' => 'New Title', + 'se' => 'Search', + 'im' => 'Import', + 'vi' => 'View', + 'lm' => 'Load Map', + 'ds' => 'Discard Selected', + 'ca' => 'Clear All', + 'ta' => 'Temporary Assembly Workspace', + 'rv' => 'Revert to Last Saved', + 'sa' => 'Save', + 'mu' => 'Move Up', + 'md' => 'Move Down', + 're' => 'Rename', + 'as' => 'after selected', + 'cs' => 'Cut selected', + 'ps' => 'Copy selected', + 'pas' => 'Paste after selected', + ); $r->print(< - +$bodytag $buttons $errtext -

$url

+ + + - + - +
Import
$lt{'ta'}  Target
File: $url
- - -after selected + + +$lt{'as'}

- - - +value="Select Map">
+ + +
  +"javascript:impfortarget.value=1;groupsearch()" value="$lt{'se'}"> -after selected -
+"javascript:impfortarget.value=1;groupimport();" value="$lt{'im'}"> +$lt{'as'} +
+ + + +
$targetmsg + + +
-Cut selected
+$lt{'cs'}


-Copy selected
+$lt{'ps'}


-Paste after selected
+$lt{'pas'}