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Diff for /loncom/interface/lonnavmaps.pm between versions 1.189 and 1.190

version 1.189, 2003/05/14 18:34:44 version 1.190, 2003/05/14 20:16:56
Line 737  returns a true or false value. If true, Line 737  returns a true or false value. If true,
 false, it is simply skipped in the display. By default, all resources  false, it is simply skipped in the display. By default, all resources
 are shown.  are shown.
   
   =item * B<suppressEmptySequences>:
   
   If you're using a filter function, and displaying sequences to orient
   the user, then frequently some sequences will be empty. Setting this to
   true will cause those sequences not to display, so as not to confuse the
   user into thinking that if the sequence is there there should be things
   under it.
   
 =item * B<suppressNavmaps>:  =item * B<suppressNavmaps>:
   
 If true, will not display Navigate Content resources. Default to  If true, will not display Navigate Content resources. Default to
Line 1223  sub render { Line 1231  sub render {
     $args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />");      $args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />");
     $args->{'displayedHereMarker'} = 0;      $args->{'displayedHereMarker'} = 0;
   
       # If we're suppressing empty sequences, look for them here. Use DFS for speed,
       # since structure actually doesn't matter, except what map has what resources.
       if ($args->{'suppressEmptySequences'}) {
           my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap,
                                                            $it->{FIRST_RESOURCE},
                                                            $it->{FINISH_RESOURCE},
                                                            {}, undef, 1);
           $depth = 0;
           $dfsit->next();
           my $curRes = $dfsit->next();
           while ($depth > -1) {
               if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; }
               if ($curRes == $dfsit->END_MAP()) { $depth--; }
   
               if (ref($curRes)) { 
                   # Parallel pre-processing: Do sequences have non-filtered-out children?
                   if ($curRes->is_sequence()) {
                       $curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0;
                       # Sequences themselves do not count as visible children,
                       # unless those sequences also have visible children.
                       # This means if a sequence appears, there's a "promise"
                       # that there's something under it if you open it, somewhere.
                   } else {
                       # Not a sequence: if it's filtered, ignore it, otherwise
                       # rise up the stack and mark the sequences as having children
                       if (&$filterFunc($curRes)) {
                           for my $sequence (@{$dfsit->getStack()}) {
                               $sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1;
                           }
                       }
                   }
               }
           } continue {
               $curRes = $dfsit->next();
           }
       }
   
     my $displayedJumpMarker = 0;      my $displayedJumpMarker = 0;
     # Set up iteration.      # Set up iteration.
     $depth = 1;      $depth = 1;
Line 1266  sub render { Line 1311  sub render {
             next;              next;
         }           } 
   
           # If this is an empty sequence and we're filtering them, continue on
           if ($curRes->is_sequence() && $args->{'suppressEmptySequences'} &&
               !$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) {
               next;
           }
   
         # If we're suppressing navmaps and this is a navmap, continue on          # If we're suppressing navmaps and this is a navmap, continue on
         if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) {          if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) {
             next;              next;
Line 2194  sub new { Line 2245  sub new {
                                   
                 $curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;                  $curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;
                 if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}                  if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}
                 }              }
           } continue {
             $curRes = $iterator->next();              $curRes = $iterator->next();
         }          }
     }      }
Line 2571  sub next { Line 2623  sub next {
     return $self->{HERE};      return $self->{HERE};
 }  }
   
   # Identical to the full iterator methods of the same name. Hate to copy/paste
   # but I also hate to "inherit" either iterator from the other.
   
   sub getStack {
       my $self=shift;
   
       my @stack;
   
       $self->populateStack(\@stack);
   
       return \@stack;
   }
   
   # Private method: Calls the iterators recursively to populate the stack.
   sub populateStack {
       my $self=shift;
       my $stack = shift;
   
       push @$stack, $self->{HERE} if ($self->{HERE});
   
       if ($self->{RECURSIVE_ITERATOR_FLAG}) {
           $self->{RECURSIVE_ITERATOR}->populateStack($stack);
       }
   }
   
 1;  1;
   
 package Apache::lonnavmaps::resource;  package Apache::lonnavmaps::resource;
Removed from v.1.189  
changed lines
  Added in v.1.190

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