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Diff for /loncom/interface/lonnavmaps.pm between versions 1.86 and 1.91

version 1.86, 2002/10/24 19:10:07 version 1.91, 2002/10/29 20:17:39
Line 910  sub new_handle { Line 910  sub new_handle {
         }          }
     }      }
   
       # Is this a new-style course? If so, we want to suppress showing the top-level
       # maps in their own folders, in favor of "inlining" them.
       my $topResource = $navmap->getById("0.0");
       my $inlineTopLevelMaps = $topResource->src() =~ m|^/uploaded/.*default\.sequence$|;
   
     my $currenturl = $ENV{'form.postdata'};      my $currenturl = $ENV{'form.postdata'};
     $currenturl=~s/^http\:\/\///;      $currenturl=~s/^http\:\/\///;
     $currenturl=~s/^[^\/]+//;      $currenturl=~s/^[^\/]+//;
Line 921  sub new_handle { Line 926  sub new_handle {
     my $queryAdd = "postdata=" . &Apache::lonnet::escape($currenturl) .      my $queryAdd = "postdata=" . &Apache::lonnet::escape($currenturl) .
         "&alreadyHere=1";          "&alreadyHere=1";
   
     $r->print('<a href="navmaps?condition=1&filter=">Show All Resources</a><br /><br />');  
   
     # Begin the HTML table  
     # four cols: resource + indent, chat+feedback, icon, text string  
     $r->print('<table cellspacing="0" cellpadding="3" border="0" bgcolor="#FFFFFF">' ."\n");  
   
     my $condition = 0;      my $condition = 0;
     if ($ENV{'form.condition'}) {      if ($ENV{'form.condition'}) {
         $condition = 1;          $condition = 1;
     }      }
   
       if ($condition) {
           $r->print('<a href="navmaps?condition=0&filter=">Close All Folders</a><br /><br />');
       } else {
           $r->print('<a href="navmaps?condition=1&filter=">Open All Folders</a><br /><br />');
       }
   
       # Begin the HTML table
       # four cols: resource + indent, chat+feedback, icon, text string
       $r->print('<table cellspacing="0" cellpadding="3" border="0" bgcolor="#FFFFFF">' ."\n");
   
     # This needs to be updated to use symbs from the remote,       # This needs to be updated to use symbs from the remote, 
     # instead of uris. The changes to this and the main rendering      # instead of uris. The changes to this and the main rendering
     # loop should be obvious.      # loop should be obvious.
     # Here's a simple example of the iterator.      # Here's a simple example of the iterator.
     # If there is a current resource      # Preprocess the map: Look for current URL, force inlined maps to display
     if ($currenturl && !$ENV{'form.alreadyHere'}) {  
         # Give me every resource...      my $mapIterator = $navmap->getIterator(undef, undef, {}, 1);
         my $mapIterator = $navmap->getIterator(undef, undef, {}, 1);      my $found = 0;
         my $found = 0;      my $depth = 1;
         my $depth = 1;      my $currentUrlIndex = 0; # keeps track of when the current resource is found,
         $mapIterator->next(); # discard the first BEGIN_MAP                               # so we can back up a few and put the anchor above the
         my $curRes = $mapIterator->next();                               # current resource
               $mapIterator->next(); # discard the first BEGIN_MAP
         while ($depth > 0 && !$found) {      my $curRes = $mapIterator->next();
             if (ref($curRes) && $curRes->src() eq $currenturl) {      my $counter = 0;
                 # If this is the correct resource, be sure to       
                 # show it by making sure the containing maps      while ($depth > 0) {
                 # are open.          if ($curRes == $mapIterator->BEGIN_MAP()) {
               $depth++;
                 my $mapStack = $mapIterator->getStack();          }
                 for my $map (@{$mapStack}) {          if ($curRes == $mapIterator->END_MAP()) {
                     if ($condition) {              $depth--;
                         undef $filterHash{$map->map_pc()};          }
                     } else {  
                         $filterHash{$map->map_pc()} = 1;          if (ref($curRes)) { $counter++; }
                     }  
           my $mapStack = $mapIterator->getStack();
           if ($currenturl && !$ENV{'form.alreadyHere'} && ref($curRes) && 
               $curRes->src() eq $currenturl) {
               # If this is the correct resource, be sure to 
               # show it by making sure the containing maps
               # are open.
   
               $currentUrlIndex = $counter;
               
               for my $map (@{$mapStack}) {
                   if ($condition) {
                       undef $filterHash{$map->map_pc()};
                   } else {
                       $filterHash{$map->map_pc()} = 1;
                 }                  }
                 $found = 1;  
             }              }
             $curRes = $mapIterator->next();              $ENV{'form.alreadyHere'} = 1;
           }
               
           # Preprocessing: If we're inlining nav maps into the top-level display,
           # make sure we show this map!
           if ($inlineTopLevelMaps && ref($curRes) && $curRes->is_map && 
               scalar(@{$mapStack}) == 1) {
               if ($condition) {
                   undef $filterHash{$curRes->map_pc()};
               } else {
                   $filterHash{$curRes->map_pc()} = 1;
               }
         }          }
     }  
   
           $curRes = $mapIterator->next();
       }
       
     undef $res; # so we don't accidentally use it later      undef $res; # so we don't accidentally use it later
     my $indentLevel = 0;      my $indentLevel = 0;
     my $indentString = "<img src=\"/adm/lonIcons/whitespace1.gif\" width=\"25\" height=\"1\" alt=\"\" border=\"0\" />";      my $indentString = "<img src=\"/adm/lonIcons/whitespace1.gif\" width=\"25\" height=\"1\" alt=\"\" border=\"0\" />";
Line 972  sub new_handle { Line 1007  sub new_handle {
     my $isNewBranch = 0;      my $isNewBranch = 0;
     my $now = time();      my $now = time();
     my $in24Hours = $now + 24 * 60 * 60;      my $in24Hours = $now + 24 * 60 * 60;
     my $depth = 1;  
     my $displayedHereMarker = 0;      my $displayedHereMarker = 0;
       
     # We know the first thing is a BEGIN_MAP (see "$self->{STARTED}"      # We know the first thing is a BEGIN_MAP (see "$self->{STARTED}"
     # code in iterator->next), so ignore the first one      # code in iterator->next), so ignore the first one
     my $mapIterator = $navmap->getIterator(undef, undef, \%filterHash,      $mapIterator = $navmap->getIterator(undef, undef, \%filterHash,
                                            $condition);                                             $condition);
     $mapIterator->next();      $mapIterator->next();
     my $curRes = $mapIterator->next();      $curRes = $mapIterator->next();
       my $deltadepth = 0;
       $depth = 1;
   
       my @backgroundColors = ("#FFFFFF", "#F6F6F6");
       my $rowNum = 0;
   
       $counter = 0;
   
     while ($depth > 0) {      while ($depth > 0) {
           # If we're in a new style course, and this is a BEGIN_MAP, END_MAP, or
           # map resource and the stack depth is only one, just plain ignore this resource
           # entirely. (This has the effect of inlining the resources in that map
           # in the nav map.)
           if ($inlineTopLevelMaps && scalar(@{$mapIterator->getStack()}) == 1 &&
               ref($curRes) && $curRes->is_map()) {
               # We let the normal depth stuff occur, but we need to shift everything
               # over by one to the left to make it look right.
               $deltadepth = -1;
               $curRes = $mapIterator->next();
               next;
           }
   
         if ($curRes == $mapIterator->BEGIN_MAP() ||          if ($curRes == $mapIterator->BEGIN_MAP() ||
             $curRes == $mapIterator->BEGIN_BRANCH()) {              $curRes == $mapIterator->BEGIN_BRANCH()) {
             $indentLevel++;              $indentLevel++;
Line 1001  sub new_handle { Line 1055  sub new_handle {
             $depth--;              $depth--;
         }          }
   
           if (ref($curRes)) { $counter++; }
   
           if ($depth == 1) { $deltadepth = 0; } # we're done shifting, because we're
                                                 # out of the inlined map
   
         # Is this resource being blotted out?          # Is this resource being blotted out?
         if (ref($curRes) && !advancedUser() && $curRes->randomout()) {          if (ref($curRes) && !advancedUser() && $curRes->randomout()) {
             $curRes = $mapIterator->next();              $curRes = $mapIterator->next();
Line 1168  sub new_handle { Line 1227  sub new_handle {
                         $color = $hurryUpColor;                          $color = $hurryUpColor;
                     }                      }
                     # Special case: If this is the last try, and there is                      # Special case: If this is the last try, and there is
                     # more then one available, give a bit of urgency                      # more then one available, and it's not due yet, give a bit of urgency
                     my $tries = $curRes->tries($part);                      my $tries = $curRes->tries($part);
                     my $maxtries = $curRes->maxtries($part);                      my $maxtries = $curRes->maxtries($part);
                     if ($tries && $maxtries && $maxtries > 1 &&                      if ($tries && $maxtries && $maxtries > 1 &&
                         $maxtries - $tries == 1) {                          $maxtries - $tries == 1 && $curRes->duedate() &&
                           $curRes->duedate() > time()) {
                         $color = $hurryUpColor;                          $color = $hurryUpColor;
                     }                      }
                     if ($color ne "") {                      if ($color ne "") {
Line 1184  sub new_handle { Line 1244  sub new_handle {
                     $nonLinkedText .= ' <i>(hidden)</i> ';                      $nonLinkedText .= ' <i>(hidden)</i> ';
                 }                  }
   
                 # FIRST COL: The resource indentation, branch icon, and name                  $rowNum++;
                 $r->print("  <tr><td align=\"left\" valign=\"center\" width=\"60%\">\n");                  my $backgroundColor = $backgroundColors[$rowNum % scalar(@backgroundColors)];
   
                   # FIRST COL: The resource indentation, branch icon, name, and anchor
                   $r->print("  <tr bgcolor=\"$backgroundColor\"><td align=\"left\" valign=\"center\" width=\"60%\">\n");
   
                   # anchor for current resource... - 5 is deliberate: If it's that
                   # high on the screen, don't bother focusing on it. Also this will
                   # print multiple anchors if this is an expanded multi-part problem...
                   # who cares?
                   if ($counter == $currentUrlIndex - 5) {
                       $r->print('<a name="current" />');
                   }
   
                 # print indentation                  # print indentation
                 for (my $i = 0; $i < $indentLevel - $deltalevel; $i++) {                  for (my $i = 0; $i < $indentLevel - $deltalevel + $deltadepth; $i++) {
                     $r->print($indentString);                      $r->print($indentString);
                 }                  }
   
Line 1692  sub courseMapDefined { Line 1763  sub courseMapDefined {
 sub getIterator {  sub getIterator {
     my $self = shift;      my $self = shift;
     my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift,      my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift,
                                                      shift, undef, shift);                                                       shift, undef, shift, 
                                                        $ENV{'form.direction'});
     return $iterator;      return $iterator;
 }  }
   
Line 1916  getIterator behaves as follows: Line 1988  getIterator behaves as follows:
   
 =over 4  =over 4
   
 =item B<getIterator>(firstResource, finishResource, filterHash, condition): All parameters are optional. firstResource is a resource reference corresponding to where the iterator should start. It defaults to navmap->firstResource() for the corresponding nav map. finishResource corresponds to where you want the iterator to end, defaulting to navmap->finishResource(). filterHash is a hash used as a set containing strings representing the resource IDs, defaulting to empty. Condition is a 1 or 0 that sets what to do with the filter hash: If a 0, then only resource that exist IN the filterHash will be recursed on. If it is a 1, only resources NOT in the filterHash will be recursed on. Defaults to 0, which is to say, do not recurse unless explicitly asked to.  =item B<getIterator>(firstResource, finishResource, filterHash, condition, direction): All parameters are optional. firstResource is a resource reference corresponding to where the iterator should start. It defaults to navmap->firstResource() for the corresponding nav map. finishResource corresponds to where you want the iterator to end, defaulting to navmap->finishResource(). filterHash is a hash used as a set containing strings representing the resource IDs, defaulting to empty. Condition is a 1 or 0 that sets what to do with the filter hash: If a 0, then only resource that exist IN the filterHash will be recursed on. If it is a 1, only resources NOT in the filterHash will be recursed on. Defaults to 0, which is to say, do not recurse unless explicitly asked to. Direction specifies which direction to recurse, either FORWARD or BACKWARD, with FORWARD being default.
   
 Thus, by default, all resources will be shown. Change the condition to a 1 without changing the hash, and only the top level of the map will be shown. Changing the condition to 1 and including some values in the hash will allow you to selectively examine parts of the navmap, while leaving it on 0 and adding things to the hash will allow you to selectively ignore parts of the nav map. See the handler code for examples: By default, the condition is 0 and all folders are closed unless explicitly opened. Clicking "Show All Resources" will use a condition of 1 and an empty filterHash, resulting in all resources being shown.  Thus, by default, all resources will be shown. Change the condition to a 1 without changing the hash, and only the top level of the map will be shown. Changing the condition to 1 and including some values in the hash will allow you to selectively examine parts of the navmap, while leaving it on 0 and adding things to the hash will allow you to selectively ignore parts of the nav map. See the handler code for examples: By default, the condition is 0 and all folders are closed unless explicitly opened. Clicking "Show All Resources" will use a condition of 1 and an empty filterHash, resulting in all resources being shown.
   
Line 1946  sub BEGIN_MAP { return 1; }    # beginin Line 2018  sub BEGIN_MAP { return 1; }    # beginin
 sub END_MAP { return 2; }      # end of the map  sub END_MAP { return 2; }      # end of the map
 sub BEGIN_BRANCH { return 3; } # beginning of a branch  sub BEGIN_BRANCH { return 3; } # beginning of a branch
 sub END_BRANCH { return 4; }   # end of a branch  sub END_BRANCH { return 4; }   # end of a branch
   sub FORWARD { return 1; }      # go forward
   sub BACKWARD { return 2; }
   
 # Params: nav map, start resource, end resource, filter, condition,   # Params: nav map, start resource, end resource, filter, condition, 
 # already seen hash ref  # already seen hash ref
Line 1976  sub new { Line 2050  sub new {
     $self->{ALREADY_SEEN} = shift;      $self->{ALREADY_SEEN} = shift;
     if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} };      if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} };
     $self->{CONDITION} = shift;      $self->{CONDITION} = shift;
       $self->{DIRECTION} = shift || FORWARD();
   
     # Flag: Have we started yet? If not, the first action is to return BEGIN_MAP.      # Flag: Have we started yet? If not, the first action is to return BEGIN_MAP.
     $self->{STARTED} = 0;      $self->{STARTED} = 0;
Line 2000  sub new { Line 2075  sub new {
     $self->{FORCE_NEXT} = undef;      $self->{FORCE_NEXT} = undef;
   
     # Start with the first resource      # Start with the first resource
     push @{$self->{BRANCH_STACK}}, $self->{FIRST_RESOURCE};      if ($self->{DIRECTION} == FORWARD) {
           push @{$self->{BRANCH_STACK}}, $self->{FIRST_RESOURCE};
       } else {
           push @{$self->{BRANCH_STACK}}, $self->{FINISH_RESOURCE};
       }
     $self->{BRANCH_STACK_SIZE} = 1;      $self->{BRANCH_STACK_SIZE} = 1;
   
     bless($self);      bless($self);
Line 2097  sub next { Line 2176  sub next {
     $self->{ALREADY_SEEN}->{$self->{HERE}->{ID}} = 1;      $self->{ALREADY_SEEN}->{$self->{HERE}->{ID}} = 1;
           
     # Get the next possible resources      # Get the next possible resources
     my $nextUnfiltered = $self->{HERE}->getNext();      my $nextUnfiltered;
       if ($self->{DIRECTION} == FORWARD()) {
           $nextUnfiltered = $self->{HERE}->getNext();
       } else {
           $nextUnfiltered = $self->{HERE}->getPrevious();
       }
     my $next = [];      my $next = [];
   
     # filter the next possibilities to remove things we've       # filter the next possibilities to remove things we've 
Line 2147  sub next { Line 2231  sub next {
         $self->{RECURSIVE_ITERATOR} =          $self->{RECURSIVE_ITERATOR} =
           Apache::lonnavmaps::iterator->new ($self->{NAV_MAP}, $firstResource,             Apache::lonnavmaps::iterator->new ($self->{NAV_MAP}, $firstResource, 
                      $finishResource, $self->{FILTER}, $self->{ALREADY_SEEN},                       $finishResource, $self->{FILTER}, $self->{ALREADY_SEEN},
                                              $self->{CONDITION});                                               $self->{CONDITION}, $self->{DIRECTION});
     }      }
   
     return $self->{HERE};      return $self->{HERE};
Line 2174  sub populateStack { Line 2258  sub populateStack {
     my $self=shift;      my $self=shift;
     my $stack = shift;      my $stack = shift;
   
     push @$stack, $self->{HERE};      push @$stack, $self->{HERE} if ($self->{HERE});
   
     if ($self->{RECURSIVE_ITERATOR_FLAG}) {      if ($self->{RECURSIVE_ITERATOR_FLAG}) {
         $self->{RECURSIVE_ITERATOR}->populateStack($stack);          $self->{RECURSIVE_ITERATOR}->populateStack($stack);
Line 2922  sub getNext { Line 3006  sub getNext {
   
 sub getPrevious {  sub getPrevious {
     my $self = shift;      my $self = shift;
     my @alreadySeen = shift;      my $alreadySeenHash = shift;
     my @branches;      my @branches;
     my $from = $self->from();      my $from = $self->from();
     foreach my $branch ( split /,/, $from) {      foreach my $branch ( split /,/, $from) {
Line 2934  sub getPrevious { Line 3018  sub getPrevious {
         # browse privs          # browse privs
         my $browsePriv = &Apache::lonnet::allowed('bre', $self->src);          my $browsePriv = &Apache::lonnet::allowed('bre', $self->src);
         if (!defined($alreadySeenHash) ||          if (!defined($alreadySeenHash) ||
             !defined($alreadySeenHash->{$next->{ID}}) ||              !defined($alreadySeenHash->{$prev->{ID}}) ||
             ($browsePriv ne '2' && $browsePriv ne 'F')) {              ($browsePriv ne '2' && $browsePriv ne 'F')) {
             push @branches, $next;              push @branches, $prev;
         }          }
     }      }
     return \@branches;      return \@branches;
Removed from v.1.86  
changed lines
  Added in v.1.91

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