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Diff for /loncom/interface/lonnavmaps.pm between versions 1.88 and 1.92

version 1.88, 2002/10/28 19:10:35 version 1.92, 2002/10/29 20:20:45
Line 820  sub new_handle { Line 820  sub new_handle {
     &Apache::loncommon::no_cache($r);      &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
   
     # Initialize the nav map      # Create the nav map the nav map
     my $navmap = Apache::lonnavmaps::navmap->new(      my $navmap = Apache::lonnavmaps::navmap->new(
                         $ENV{"request.course.fn"}.".db",                          $ENV{"request.course.fn"}.".db",
                         $ENV{"request.course.fn"}."_parms.db", 1, 1);                          $ENV{"request.course.fn"}."_parms.db", 1, 1);
Line 850  sub new_handle { Line 850  sub new_handle {
                   '<br><img src="/adm/lonMisc/feedback.gif"> New message (click to open)<p>');                     '<br><img src="/adm/lonMisc/feedback.gif"> New message (click to open)<p>'); 
     }      }
   
       # Now that we've displayed some stuff to the user, init the navmap
       $navmap->init();
   
     # Check that it's defined      # Check that it's defined
     if (!($navmap->courseMapDefined())) {      if (!($navmap->courseMapDefined())) {
         $r->print('<font size="+2" color="red">Coursemap undefined.</font>' .          $r->print('<font size="+2" color="red">Coursemap undefined.</font>' .
Line 926  sub new_handle { Line 929  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.
Line 946  sub new_handle { Line 953  sub new_handle {
     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,
                                # so we can back up a few and put the anchor above the
                                # current resource
     $mapIterator->next(); # discard the first BEGIN_MAP      $mapIterator->next(); # discard the first BEGIN_MAP
     my $curRes = $mapIterator->next();      my $curRes = $mapIterator->next();
       my $counter = 0;
           
     while ($depth > 0) {      while ($depth > 0) {
         if ($curRes == $mapIterator->BEGIN_MAP()) {          if ($curRes == $mapIterator->BEGIN_MAP()) {
Line 957  sub new_handle { Line 968  sub new_handle {
             $depth--;              $depth--;
         }          }
   
           if (ref($curRes)) { $counter++; }
   
         my $mapStack = $mapIterator->getStack();          my $mapStack = $mapIterator->getStack();
         if ($currenturl && !$ENV{'form.alreadyHere'} && ref($curRes) &&           if ($currenturl && !$ENV{'form.alreadyHere'} && ref($curRes) && 
             $curRes->src() eq $currenturl) {              $curRes->src() eq $currenturl) {
             # If this is the correct resource, be sure to               # If this is the correct resource, be sure to 
             # show it by making sure the containing maps              # show it by making sure the containing maps
             # are open.              # are open.
   
               $currentUrlIndex = $counter;
                           
             for my $map (@{$mapStack}) {              for my $map (@{$mapStack}) {
                 if ($condition) {                  if ($condition) {
Line 995  sub new_handle { Line 1010  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;      my $deltadepth = 0;
       $depth = 1;
   
     my @backgroundColors = ("#FFFFFF", "#F6F6F6");      my @backgroundColors = ("#FFFFFF", "#F6F6F6");
     my $rowNum = 0;      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          # 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          # map resource and the stack depth is only one, just plain ignore this resource
Line 1041  sub new_handle { Line 1058  sub new_handle {
             $depth--;              $depth--;
         }          }
   
           if (ref($curRes)) { $counter++; }
   
         if ($depth == 1) { $deltadepth = 0; } # we're done shifting, because we're          if ($depth == 1) { $deltadepth = 0; } # we're done shifting, because we're
                                               # out of the inlined map                                                # out of the inlined map
   
Line 1231  sub new_handle { Line 1250  sub new_handle {
                 $rowNum++;                  $rowNum++;
                 my $backgroundColor = $backgroundColors[$rowNum % scalar(@backgroundColors)];                  my $backgroundColor = $backgroundColors[$rowNum % scalar(@backgroundColors)];
   
                 # FIRST COL: The resource indentation, branch icon, and name                  # FIRST COL: The resource indentation, branch icon, name, and anchor
                 $r->print("  <tr bgcolor=\"$backgroundColor\"><td align=\"left\" valign=\"center\" width=\"60%\">\n");                  $r->print("  <tr bgcolor=\"$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 + $deltadepth; $i++) {                  for (my $i = 0; $i < $indentLevel - $deltalevel + $deltadepth; $i++) {
                     $r->print($indentString);                      $r->print($indentString);
Line 1616  sub new { Line 1643  sub new {
     $self->{PARM_HASH} = \%parmhash;      $self->{PARM_HASH} = \%parmhash;
     $self->{HASH_TIED} = 1;      $self->{HASH_TIED} = 1;
   
       bless($self);
           
       return $self;
   }
   
   sub init {
       my $self = $self;
   
     # If the course opt hash and the user opt hash should be generated,      # If the course opt hash and the user opt hash should be generated,
     # generate them      # generate them
     if ($self->{GENERATE_COURSE_USER_OPT}) {      if ($self->{GENERATE_COURSE_USER_OPT}) {
Line 1720  sub new { Line 1755  sub new {
     }          }    
   
     $self->{PARM_CACHE} = {};      $self->{PARM_CACHE} = {};
       
     bless($self);  
           
     return $self;  
 }  }
   
 # Checks to see if coursemap is defined, matching test in old lonnavmaps  # Checks to see if coursemap is defined, matching test in old lonnavmaps
Line 1739  sub courseMapDefined { Line 1770  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 1963  getIterator behaves as follows: Line 1995  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 1993  sub BEGIN_MAP { return 1; }    # beginin Line 2025  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 2023  sub new { Line 2057  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 2047  sub new { Line 2082  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 2144  sub next { Line 2183  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 2194  sub next { Line 2238  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};
Removed from v.1.88  
changed lines
  Added in v.1.92

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