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Diff for /rat/lonratedt.pm between versions 1.2 and 1.12

version 1.2, 2001/05/01 15:23:40 version 1.12, 2002/05/13 15:36:05
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # Edit Handler for RAT Maps  # Edit Handler for RAT Maps
   #
   # $Id$
   #
   # 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  # (TeX Content Handler
 #  #
 # 05/29/00,05/30 Gerd Kortemeyer)  # 05/29/00,05/30 Gerd Kortemeyer)
 # 7/1 Gerd Kortemeyer  # 7/1,6/30 Gerd Kortemeyer
   
 package Apache::lonratedt;  package Apache::lonratedt;
   
 use strict;  use strict;
 use Apache::Constants qw(:common);  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(<<ENDDOCUMENT);    $r->print(<<ENDDOCUMENT);
   
 <html>  <html>
Line 37  sub handler { Line 145  sub handler {
 </html>  </html>
   
 ENDDOCUMENT  ENDDOCUMENT
   }
   
   # ---------------------------------------------------------------- Make buttons
   
   sub buttons {
       my $adv=shift;
       my $output='<form method=post>';     
       if ($adv==1) {
    $output.='<input type=submit name=forceadv value="Edit">';
       } else {
           unless ($adv==2) {
              $output.='<input type=submit name=forcesmp value="Simple Edit">';
           }
    $output.='<input type=submit name=forceadv value="Advanced Edit">';
       }
       return $output.'</form><hr>';
   }
   
   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=$ENV->{'form.import'};
          } else {
              @importselect=($ENV{'form.import'});
          }
      }
      if (defined($ENV{'form.target'})) {
          if (ref($ENV{'form.target'})) {
      @targetselect=$ENV->{'form.target'};
          } else {
              @targetselect=($ENV{'form.target'});
          }
      }
   # --------------------------------------------------------- 
   
      my $targetdetail=();
   
      my @imporder=();
      my @impresources=();
      my $importdetail='';
   # ------------------------------------------------------------ Assemble windows
   
      my $importwindow=join("\n",map { 
          my ($name)=split(/\:/,$impresources[$_]);
          unless ($name) { $name='UNKNOWN'; }
          '<option value="'.$_.'">'.$name.'</option>';
      } @imporder);
   
      my $targetwindow=join("\n",map { 
          my ($name)=split(/\:/,$resources[$_]);
          unless ($name) { $name='UNKNOWN'; }
          '<option value="'.$_.'">'.$name.'</option>';
      } @order);
   
   # ----------------------------------------------------- Start simple RAT screen
      $r->print(<<ENDSMPHEAD);
   <html>
   <head>
   <script>
   var srch;
   var srchflag=-1; // 1 means currently open
                    // 0 means closed (but has been open)
                    // -1 means never yet opened/defined
   var srchmode='';
   
   var idx;
   var idxflag=-1; // 1 means currently open
                    // 0 means closed (but has been open)
                    // -1 means never yet opened/defined
   var idxmode='';
   
   // ------------------------------------------------------ Clears indexer window
   function idxclear() {
     idx.document.clear();
   }
   
   // ------------------------------------------------------- Clears search window
   function srchclear() {
     srch.document.clear();
   }
   
   // ------------------------------------------------------ Closes indexer window
   function idxclose() {
     if (idx && !idx.closed) {
       idxflag=0;
       idx.close();
     }
   }
   
   // ------------------------------------------------------- Closes search window
   function srchclose() {
     if (srch && !srch.closed) {
       srchflag=0;
       srch.close();
     }
   }
   
   // -------------------------------------------------------- Open indexer window
   function idxopen(mode) {
      var options="scrollbars=1,resizable=1,menubar=0";
      idxmode=mode;
      idxflag=1;
      idx=open("/res/?launch=1&mode=simple&catalogmode="+mode,"idxout",options);
      idx.focus();
   }
   
   // --------------------------------------------------------- Open search window
   function srchopen(mode) {
      var options="scrollbars=1,resizable=1,menubar=0";
      srchmode=mode;
      srchflag=1;
      srch=open("/adm/searchcat?launch=1&mode=simple&catalogmode="+mode,"srchout",options);
      srch.focus();
   }
   // ----------------------------------------------------- launch indexer browser
   function groupsearch() {
      srchcheck('groupsearch');
   }
   
   function groupimport() {
      idxcheck('groupimport');
   }
   // ------------------------------------------------------- Do srch status check
   function srchcheck(mode) {
      if (!srch || srch.closed || srchmode!=mode) {
         srchopen(mode);
      }
      srch.focus();
   }
   
   // -------------------------------------------------------- Do idx status check
   function idxcheck(mode) {
      if (!idx || idx.closed || idxmode!=mode) {
         idxopen(mode);
      }
      idx.focus();
   }
   </script>
   </head>                 
   <body bgcolor='#FFFFFF'>
   $buttons
   <font color=red>$errtext</font>
   <form method=post>
   <input type=hidden name=forcesmp value=1>
   <table>
       <tr><th width="40%">Import</th>
   <th>&nbsp;</th>
   <th width="40%">Target</th></tr>
   <tr><td bgcolor="#FFFFCC">
   <input type=button onClick="javascript:groupsearch()" value="Group Search">
   <input type=button onClick="javascript:groupimport()" value="Group Import">
   <input type=button onClick="javascript:viewimport()" value="View">
       </td><td>&nbsp;</td><td bgcolor="#FFFFCC">
   <input type=button onClick="javascript:viewtarget()" value="View">
   </td></tr>
   <tr><td bgcolor="#FFFFCC"><select name="import" multiple>
   $importwindow
   </select>
   </td>
   <td bgcolor="#FFFFAA" align="center">
   Cut selected<br>
   <input type=submit name=cut value='<<<'><p>
   <hr>
   Paste after selected<br>
   <input type=submit name=paste value='>>>'>
   </td>
   <td bgcolor="#FFFFCC"><select name="target" multiple>
   $targetwindow
   </select>
   </table>
   <input type=hidden name=importdetail value="$importdetail">
   <input type=hidden name=targetdetail value="$targetdetail">
   </form>
   </body></html>
   ENDSMPHEAD
   }
   
   # ----------------------------------------------------------------- No such dir
   sub nodir {
      my ($r,$dir)=@_;
      $dir=~s/^\/home\/\w+\/public\_html//;
      $r->print(<<ENDNODIR);
   <html>
   <body bgcolor='#FFFFFF'>
   <h1>No such directory: $dir</h1>
   </body>
   </html>
   ENDNODIR
   }
   
   # ---------------------------------------------------------------- View Handler
   
   sub viewmap {
       my ($r,$adv,$errtext)=@_;
       $r->print('<html><body bgcolor="#FFFFFF">'.&buttons($adv));
       if ($errtext) {
    $r->print($errtext.'<hr>');
       }
       foreach (@resources) {
    if (defined($_)) {
       my ($title,$url)=split(/\:/,$_);
               $title=~s/\&colon\;/\:/g;
               $url=~s/\&colon\;/\:/g;
               unless ($title) { $title='<i>Unknown</i>'; }
               if ($url) {
    $r->print('<a href="'.&Apache::lonratsrv::qtescape($url).'">');
               }
               $r->print(&Apache::lonratsrv::qtescape($title));
               if ($url) { $r->print('</a>'); }
               $r->print('<br>');
           }
       }
       $r->print('</body></html>');
   }
   
   # ================================================================ 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=~/\<map[^\>]+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;    return OK;
 }  }
   
Removed from v.1.2  
changed lines
  Added in v.1.12

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