--- loncom/interface/lonnavmaps.pm 2003/02/06 22:58:12 1.139 +++ loncom/interface/lonnavmaps.pm 2004/07/26 22:19:59 1.271 @@ -1,8 +1,7 @@ - # The LearningOnline Network with CAPA # Navigate Maps Handler # -# $Id: lonnavmaps.pm,v 1.139 2003/02/06 22:58:12 bowersj2 Exp $ +# $Id: lonnavmaps.pm,v 1.271 2004/07/26 22:19:59 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -26,28 +25,17 @@ # # http://www.lon-capa.org/ # -# (Page Handler -# -# (TeX Content Handler -# -# 05/29/00,05/30 Gerd Kortemeyer) -# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, -# 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer) -# -# 3/1/1,6/1,17/1,29/1,30/1,2/8,9/21,9/24,9/25 Gerd Kortemeyer -# YEAR=2002 -# 1/1 Gerd Kortemeyer -# Oct-Nov Jeremy Bowers +### package Apache::lonnavmaps; use strict; use Apache::Constants qw(:common :http); use Apache::loncommon(); +use Apache::lonmenu(); +use Apache::lonlocal; use POSIX qw (floor strftime); - -my %navmaphash; -my %parmhash; +use Data::Dumper; # for debugging, not always used # symbolic constants sub SYMB { return 1; } @@ -56,21 +44,19 @@ sub NOTHING { return 3; } # Some data +my $resObj = "Apache::lonnavmaps::resource"; + # Keep these mappings in sync with lonquickgrades, which uses the colors # instead of the icons. my %statusIconMap = - ( Apache::lonnavmaps::resource->NETWORK_FAILURE => '', - Apache::lonnavmaps::resource->NOTHING_SET => '', - Apache::lonnavmaps::resource->CORRECT => 'navmap.correct.gif', - Apache::lonnavmaps::resource->EXCUSED => 'navmap.correct.gif', - Apache::lonnavmaps::resource->PAST_DUE_NO_ANSWER => 'navmap.wrong.gif', - Apache::lonnavmaps::resource->PAST_DUE_ANSWER_LATER => 'navmap.wrong.gif', - Apache::lonnavmaps::resource->ANSWER_OPEN => 'navmap.wrong.gif', - Apache::lonnavmaps::resource->OPEN_LATER => '', - Apache::lonnavmaps::resource->TRIES_LEFT => 'navmap.open.gif', - Apache::lonnavmaps::resource->INCORRECT => 'navmap.wrong.gif', - Apache::lonnavmaps::resource->OPEN => 'navmap.open.gif', - Apache::lonnavmaps::resource->ATTEMPTED => 'navmap.open.gif' ); + ( + $resObj->CLOSED => '', + $resObj->OPEN => 'navmap.open.gif', + $resObj->CORRECT => 'navmap.correct.gif', + $resObj->INCORRECT => 'navmap.wrong.gif', + $resObj->ATTEMPTED => 'navmap.ellipsis.gif', + $resObj->ERROR => '' + ); my %iconAltTags = ( 'navmap.correct.gif' => 'Correct', @@ -79,34 +65,72 @@ my %iconAltTags = # Defines a status->color mapping, null string means don't color my %colormap = - ( Apache::lonnavmaps::resource->NETWORK_FAILURE => '', - Apache::lonnavmaps::resource->CORRECT => '', - Apache::lonnavmaps::resource->EXCUSED => '#3333FF', - Apache::lonnavmaps::resource->PAST_DUE_ANSWER_LATER => '', - Apache::lonnavmaps::resource->PAST_DUE_NO_ANSWER => '', - Apache::lonnavmaps::resource->ANSWER_OPEN => '#006600', - Apache::lonnavmaps::resource->OPEN_LATER => '', - Apache::lonnavmaps::resource->TRIES_LEFT => '', - Apache::lonnavmaps::resource->INCORRECT => '', - Apache::lonnavmaps::resource->OPEN => '', - Apache::lonnavmaps::resource->NOTHING_SET => '' ); + ( $resObj->NETWORK_FAILURE => '', + $resObj->CORRECT => '', + $resObj->EXCUSED => '#3333FF', + $resObj->PAST_DUE_ANSWER_LATER => '', + $resObj->PAST_DUE_NO_ANSWER => '', + $resObj->ANSWER_OPEN => '#006600', + $resObj->OPEN_LATER => '', + $resObj->TRIES_LEFT => '', + $resObj->INCORRECT => '', + $resObj->OPEN => '', + $resObj->NOTHING_SET => '', + $resObj->ATTEMPTED => '', + $resObj->ANSWER_SUBMITTED => '' + ); # And a special case in the nav map; what to do when the assignment # is not yet done and due in less then 24 hours my $hurryUpColor = "#FF0000"; -sub cleanup { - if (tied(%navmaphash)){ - &Apache::lonnet::logthis('Cleanup navmaps: navmaphash'); - unless (untie(%navmaphash)) { - &Apache::lonnet::logthis('Failed cleanup navmaps: navmaphash'); - } - } - if (tied(%parmhash)){ - &Apache::lonnet::logthis('Cleanup navmaps: parmhash'); - unless (untie(%parmhash)) { - &Apache::lonnet::logthis('Failed cleanup navmaps: parmhash'); - } +sub launch_win { + my ($mode,$script)=@_; + my $result; + if ($script ne 'no') { + $result.=''; + } + if ($mode eq 'link') { + $result.='' + .&mt("Launch Navmaps in seperate window")." "; } + return $result; +} + +sub close { + if ($ENV{'environment.remotenavmap'} ne 'on') { return ''; } + return(< +window.status='Accessing Nav Control'; +menu=window.open("/adm/rat/empty.html","loncapanav", + "height=600,width=400,scrollbars=1"); +window.status='Closing Nav Control'; +menu.close(); +window.status='Done.'; + +ENDCLOSE +} + +sub update { + if ($ENV{'environment.remotenavmap'} ne 'on') { return ''; } + if (!$ENV{'request.course.id'}) { return ''; } + if ($ENV{'REQUEST_URI'}=~m|^/adm/navmaps|) { return ''; } + return(< + +ENDUPDATE } sub handler { @@ -117,14 +141,12 @@ sub handler { sub real_handler { my $r = shift; - &Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING}); - # Handle header-only request if ($r->header_only) { if ($ENV{'browser.mathml'}) { - $r->content_type('text/xml'); + &Apache::loncommon::content_type($r,'text/xml'); } else { - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); } $r->send_http_header; return OK; @@ -132,18 +154,37 @@ sub real_handler { # Send header, don't cache this page if ($ENV{'browser.mathml'}) { - $r->content_type('text/xml'); + &Apache::loncommon::content_type($r,'text/xml'); } else { - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); } &Apache::loncommon::no_cache($r); $r->send_http_header; - # Create the nav map - my $navmap = Apache::lonnavmaps::navmap->new( - $ENV{"request.course.fn"}.".db", - $ENV{"request.course.fn"}."_parms.db", 1, 1); + if ($ENV{QUERY_STRING} eq 'collapseExternal') { + &Apache::lonnet::put('environment',{'remotenavmap' => 'off'}); + &Apache::lonnet::appenv('environment.remotenavmap' => 'off'); + $r->print(<<"ENDSUBM"); + + + + + + +ENDSUBM + return; + } + if ($ENV{QUERY_STRING} eq 'launchExternal') { + &Apache::lonnet::put('environment',{'remotenavmap' => 'on'}); + &Apache::lonnet::appenv('environment.remotenavmap' => 'on'); + } + # Create the nav map + my $navmap = Apache::lonnavmaps::navmap->new(); if (!defined($navmap)) { my $requrl = $r->uri; @@ -152,97 +193,38 @@ sub real_handler { } $r->print("\n"); - $r->print("Navigate Course Contents"); - - # Header - $r->print(&Apache::loncommon::bodytag('Navigate Course Contents','', - '')); - $r->print(''); - - $r->rflush(); - - # Now that we've displayed some stuff to the user, init the navmap - $navmap->init(); - - $r->print(''); - my $date=localtime; - $r->print(''); - - # Print discussions and feedback header - if ($navmap->{LAST_CHECK}) { - $r->print(''); - } else { - $r->print(''); - } - $r->print('
Key:    '. - ' New discussion since '. - strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})). - '  '. - ' New message (click to open)

'. - '

  '. - ' Discussions'. - '   New message (click to open)'. - '
'); - - my $condition = 0; - if ($ENV{'form.condition'}) { - $condition = 1; - } - - # Determine where the "here" marker is and where the screen jumps to. - my $hereType; # the type of marker, SYMB, URL, or NOTHING - my $here; # the actual URL or SYMB for the here marker - my $jumpType; # The type of the thing we have a jump for, SYMB or URL - my $jump; # the SYMB/URL of the resource we need to jump to - - if ( $ENV{'form.alreadyHere'} ) { # we came from a user's manipulation of the nav page - # If this is a click on a folder or something, we want to preserve the "here" - # from the querystring, and get the new "jump" marker - $hereType = $ENV{'form.hereType'}; - $here = $ENV{'form.here'}; - $jumpType = $ENV{'form.jumpType'} || NOTHING(); - $jump = $ENV{'form.jump'}; - } else { # the user is visiting the nav map from the remote - # We're coming from the remote. We have either a url, a symb, or nothing, - # and we need to figure out what. - # Preference: Symb - - if ($ENV{'form.symb'}) { - $hereType = $jumpType = SYMB(); - $here = $jump = $ENV{'form.symb'}; - } elsif ($ENV{'form.postdata'}) { - # couldn't find a symb, is there a URL? - my $currenturl = $ENV{'form.postdata'}; - $currenturl=~s/^http\:\/\///; - $currenturl=~s/^[^\/]+//; - - $hereType = $jumpType = URL; - $here = $jump = $currenturl; - } else { - # Nothing - $hereType = $jumpType = NOTHING(); - } - } - + $r->print("".&mt('Navigate Course Contents').""); +# ------------------------------------------------------------ Get query string + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort']); - # alreadyHere allows us to only open the maps necessary to view - # the current location once, while at the same time remembering - # the current location. Without that check, the user would never - # be able to close those maps; the user would close it, and the - # currenturl scan would re-open it. - my $queryAdd = "&alreadyHere=1"; - - if ($condition) { - $r->print("Close All Folders"); +# ----------------------------------------------------- Force menu registration + my $addentries=''; + my $more_unload; + if ($ENV{'environment.remotenavmap'} eq 'on') { + $r->print(''); +# FIXME need to be smarter to only catch window close events +# $more_unload="collapse()" + } + if ($ENV{'form.register'}) { + $addentries=' onLoad="'.&Apache::lonmenu::loadevents(). + '" onUnload="'.&Apache::lonmenu::unloadevents().';'. + $more_unload.'"'; + $r->print(&Apache::lonmenu::registerurl(1)); } else { - $r->print("Open All Folders"); + $addentries=' onUnload="'.$more_unload.'"'; } - $r->print('
 '); + # Header + $r->print(''. + &Apache::loncommon::bodytag('Navigate Course Contents','', + $addentries,'','',$ENV{'form.register'})); + $r->print(''. + &Apache::loncommon::help_open_menu('','Navigation Screen','Navigation_Screen','',undef,'RAT')); + $r->rflush(); # Check that it's defined @@ -252,104 +234,145 @@ sub real_handler { return OK; } - my $res = "Apache::lonnavmaps::resource"; - - my %filterHash; - # Figure out what we're not displaying - foreach (split(/\,/, $ENV{"form.filter"})) { - if ($_) { - $filterHash{$_} = "1"; + # See if there's only one map in the top-level, if we don't + # already have a filter... if so, automatically display it + # (older code; should use retrieveResources) + if ($ENV{QUERY_STRING} !~ /filter/) { + my $iterator = $navmap->getIterator(undef, undef, undef, 0); + my $curRes; + my $sequenceCount = 0; + my $sequenceId; + while ($curRes = $iterator->next()) { + if (ref($curRes) && $curRes->is_sequence()) { + $sequenceCount++; + $sequenceId = $curRes->map_pc(); + } + } + + if ($sequenceCount == 1) { + # The automatic iterator creation in the render call + # will pick this up. We know the condition because + # the defined($ENV{'form.filter'}) also ensures this + # is a fresh call. + $ENV{'form.filter'} = "$sequenceId"; } } - # Begin the HTML table - # four cols: resource + indent, chat+feedback, icon, text string - $r->print('' ."\n"); - - # This needs to be updated to use symbs from the remote, - # instead of uris. The changes to this and the main rendering - # loop should be obvious. - # Here's a simple example of the iterator. - # Preprocess the map: Look for current URL, open necessary maps - - my $mapIterator = $navmap->getIterator(undef, undef, undef, 1); - my $found = 0; - my $depth = 1; - my $currentJumpIndex = 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 - my $currentJumpDelta = 2; # change this to change how many resources are displayed - # before the current resource when using #current - $mapIterator->next(); # discard the first BEGIN_MAP - my $curRes = $mapIterator->next(); - my $counter = 0; - my $foundJump = ($jumpType == NOTHING()); # look for jump point if we have one - my $looped = 0; + if ($ENV{QUERY_STRING} eq 'launchExternal') { + $r->print(' + + '); + $r->print(' + '); + } + + if ($ENV{'environment.remotenavmap'} ne 'on') { + $r->print(&launch_win('link','yes')); + } + if ($ENV{'environment.remotenavmap'} eq 'on') { +# $r->print("" . + $r->print("" . + &mt("Close external navmaps"). + "    "); + } + + my $jumpToFirstHomework = 0; + # Check to see if the student is jumping to next open, do-able problem + if ($ENV{QUERY_STRING} eq 'jumpToFirstHomework') { + $jumpToFirstHomework = 1; + # Find the next homework problem that they can do. + my $iterator = $navmap->getIterator(undef, undef, undef, 1); + my $curRes; + my $foundDoableProblem = 0; + my $problemRes; + + while (($curRes = $iterator->next()) && !$foundDoableProblem) { + if (ref($curRes) && $curRes->is_problem()) { + my $status = $curRes->status(); + if ($curRes->completable()) { + $problemRes = $curRes; + $foundDoableProblem = 1; + + # Pop open all previous maps + my $stack = $iterator->getStack(); + pop @$stack; # last resource in the stack is the problem + # itself, which we don't need in the map stack + my @mapPcs = map {$_->map_pc()} @$stack; + $ENV{'form.filter'} = join(',', @mapPcs); - # We only need to do this if we need to open the maps to show the - # current position. This will change the counter so we can't count - # for the jump marker with this loop. - while ($depth > 0 && !$ENV{'form.alreadyHere'}) { - if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; } - if ($curRes == $mapIterator->END_MAP()) { $depth--; } - - if (ref($curRes) && !$ENV{'form.alreadyHere'} && - ($hereType == SYMB() && $curRes->symb() eq $here) || - (ref($curRes) && $hereType == URL() && $curRes->src() eq $here)) { - my $mapStack = $mapIterator->getStack(); - - # Ensure the parent maps are open - for my $map (@{$mapStack}) { - if ($condition) { - undef $filterHash{$map->map_pc()}; - } else { - $filterHash{$map->map_pc()} = 1; + # Mark as both "here" and "jump" + $ENV{'form.postsymb'} = $curRes->symb(); } } - $ENV{'form.alreadyHere'} = 1; } - $looped = 1; - - $curRes = $mapIterator->next(); - } - - $mapIterator = $navmap->getIterator(undef, undef, \%filterHash, 0); - $depth = 1; - $mapIterator->next(); - $curRes = $mapIterator->next(); - - while ($depth > 0 && !$foundJump) { - if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; } - if ($curRes == $mapIterator->END_MAP()) { $depth--; } - if (ref($curRes)) { $counter++; } - if (ref($curRes) && - (($jumpType == SYMB() && $curRes->symb() eq $jump) || - ($jumpType == URL() && $curRes->src() eq $jump))) { - # If this is the correct resource, be sure to - # show it by making sure the containing maps - # are open. - - # This is why we have to use the main iterator instead of the - # potentially faster DFS: The count has to be the same, so - # the order has to be the same, which DFS won't give us. - $currentJumpIndex = $counter; - $foundJump = 1; + # If we found no problems, print a note to that effect. + if (!$foundDoableProblem) { + $r->print("All homework assignments have been completed.

"); } + } else { + $r->print("" . + &mt("Go To My First Homework Problem")."    "); + } - $curRes = $mapIterator->next(); + my $suppressEmptySequences = 0; + my $filterFunc = undef; + my $resource_no_folder_link = 0; + + # Display only due homework. + my $showOnlyHomework = 0; + if ($ENV{QUERY_STRING} eq 'showOnlyHomework') { + $showOnlyHomework = 1; + $suppressEmptySequences = 1; + $filterFunc = sub { my $res = shift; + return $res->completable() || $res->is_map(); + }; + $r->print("

".&mt("Uncompleted Homework")."

"); + $ENV{'form.filter'} = ''; + $ENV{'form.condition'} = 1; + $resource_no_folder_link = 1; + } else { + $r->print("" . + &mt("Show Only Uncompleted Homework")."    "); } - - # renderer call - $mapIterator = $navmap->getIterator(undef, undef, \%filterHash, 0); - my $render = render({ 'cols' => [0,1,2,3], 'iterator' => $mapIterator, - 'url' => '/adm/navmaps', - 'queryString' => 'alreadyHere=1', - 'currentJumpIndex' => $currentJumpIndex}); - $r->print($render); + $r->print(" + + Sort by: + + + + "); + # renderer call + my $renderArgs = { 'cols' => [0,2,3], + 'sort' => $ENV{'form.sort'}, + 'url' => '/adm/navmaps', + 'navmap' => $navmap, + 'suppressNavmap' => 1, + 'suppressEmptySequences' => $suppressEmptySequences, + 'filterFunc' => $filterFunc, + 'resource_no_folder_link' => $resource_no_folder_link, + 'r' => $r}; + my $render = render($renderArgs); $navmap->untieHashes(); + # If no resources were printed, print a reassuring message so the + # user knows there was no error. + if ($renderArgs->{'counter'} == 0) { + if ($showOnlyHomework) { + $r->print("

".&mt("All homework is currently completed").".

"); + } else { # both jumpToFirstHomework and normal use the same: course must be empty + $r->print("

This course is empty.

"); + } + } + $r->print(""); $r->rflush(); @@ -386,8 +409,16 @@ sub getLinkForResource { # Check to see if there are any pages in the stack foreach $res (@$stack) { - if (defined($res) && $res->is_page()) { - return $res->src(); + if (defined($res)) { + if ($res->is_page()) { + return $res->src(); + } + # in case folder was skipped over as "only sequence" + my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb()); + if ($map=~/\.page$/) { + return &Apache::lonnet::clutter($map).'#'. + &Apache::lonnet::escape(&Apache::lonnet::declutter($src)); + } } } @@ -402,9 +433,9 @@ sub getLinkForResource { return $res->src(); } -# Convenience function: This seperates the logic of how to create +# Convenience function: This separates the logic of how to create # the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned", -# etc.) into a seperate function. It takes a resource object as the +# etc.) into a separate function. It takes a resource object as the # first parameter, and the part number of the resource as the second. # It's basically a big switch statement on the status of the resource. @@ -413,34 +444,36 @@ sub getDescription { my $part = shift; my $status = $res->status($part); - if ($status == $res->NETWORK_FAILURE) { return ""; } + if ($status == $res->NETWORK_FAILURE) { + return &mt("Having technical difficulties; please check status later"); + } if ($status == $res->NOTHING_SET) { - return "Not currently assigned."; + return &mt("Not currently assigned."); } if ($status == $res->OPEN_LATER) { return "Open " . timeToHumanString($res->opendate($part)); } if ($status == $res->OPEN) { if ($res->duedate($part)) { - return "Due " . timeToHumanString($res->duedate($part)); + return &mt("Due")." " .timeToHumanString($res->duedate($part)); } else { - return "Open, no due date"; + return &mt("Open, no due date"); } } if ($status == $res->PAST_DUE_ANSWER_LATER) { - return "Answer open " . timeToHumanString($res->answerdate($part)); + return &mt("Answer open")." " . timeToHumanString($res->answerdate($part)); } if ($status == $res->PAST_DUE_NO_ANSWER) { - return "Was due " . timeToHumanString($res->duedate($part)); + return &mt("Was due")." " . timeToHumanString($res->duedate($part)); } if ($status == $res->ANSWER_OPEN) { - return "Answer available"; + return &mt("Answer available"); } if ($status == $res->EXCUSED) { - return "Excused by instructor"; + return &mt("Excused by instructor"); } if ($status == $res->ATTEMPTED) { - return "Not yet graded."; + return &mt("Answer submitted, not yet graded"); } if ($status == $res->TRIES_LEFT) { my $tries = $res->tries($part); @@ -452,27 +485,30 @@ sub getDescription { $triesString = "$triesString"; } } - if ($res->duedate()) { - return "Due " . timeToHumanString($res->duedate($part)) . + if ($res->duedate($part)) { + return &mt("Due")." " . timeToHumanString($res->duedate($part)) . " $triesString"; } else { - return "No due date $triesString"; + return &mt("No due date")." $triesString"; } } + if ($status == $res->ANSWER_SUBMITTED) { + return &mt('Answer submitted'); + } } # Convenience function, so others can use it: Is the problem due in less then # 24 hours, and still can be done? -sub dueInLessThen24Hours { +sub dueInLessThan24Hours { my $res = shift; my $part = shift; my $status = $res->status($part); - return ($status == $res->OPEN() || $status == $res->ATTEMPTED() || + return ($status == $res->OPEN() || $status == $res->TRIES_LEFT()) && - $res->duedate() && $res->duedate() < time()+(24*60*60) && - $res->duedate() > time(); + $res->duedate($part) && $res->duedate($part) < time()+(24*60*60) && + $res->duedate($part) > time(); } # Convenience function, so others can use it: Is there only one try remaining for the @@ -484,13 +520,14 @@ sub lastTry { my $tries = $res->tries($part); my $maxtries = $res->maxtries($part); return $tries && $maxtries && $maxtries > 1 && - $maxtries - $tries == 1 && $res->duedate() && - $res->duedate() > time(); + $maxtries - $tries == 1 && $res->duedate($part) && + $res->duedate($part) > time(); } # This puts a human-readable name on the ENV variable. + sub advancedUser { - return $ENV{'user.adv'}; + return $ENV{'request.role.adv'}; } @@ -506,9 +543,11 @@ sub timeToHumanString { my ($time) = @_; # zero, '0' and blank are bad times if (!$time) { - return 'never'; + return &mt('never'); } - + unless (&Apache::lonlocal::current_language()=~/^en/) { + return &Apache::lonlocal::locallocaltime($time); + } my $now = time(); my @time = localtime($time); @@ -576,7 +615,7 @@ sub timeToHumanString { # HH:MM if ( $delta < $day * 5 ) { my $timeStr = strftime("%A, %b %e at %I:%M %P", localtime($time)); - $timeStr =~ s/12:00 am/midnight/; + $timeStr =~ s/12:00 am/00:00/; $timeStr =~ s/12:00 pm/noon/; return ($inPast ? "last " : "next ") . $timeStr; @@ -586,14 +625,14 @@ sub timeToHumanString { if ( $time[5] == $now[5]) { # Return on Month Day, HH:MM meridian my $timeStr = strftime("on %A, %b %e at %I:%M %P", localtime($time)); - $timeStr =~ s/12:00 am/midnight/; + $timeStr =~ s/12:00 am/00:00/; $timeStr =~ s/12:00 pm/noon/; return $timeStr; } # Not this year, so show the year my $timeStr = strftime("on %A, %b %e %G at %I:%M %P", localtime($time)); - $timeStr =~ s/12:00 am/midnight/; + $timeStr =~ s/12:00 am/00:00/; $timeStr =~ s/12:00 pm/noon/; return $timeStr; } @@ -602,47 +641,174 @@ sub timeToHumanString { =pod -=head1 navmap renderer +=head1 NAME -The navmaprenderer package provides a sophisticated rendering of the standard navigation maps interface into HTML. The provided nav map handler is actually just a glorified call to this. +Apache::lonnavmap - Subroutines to handle and render the navigation + maps -Because of the large number of parameters this function presents, instead of passing it arguments as is normal, pass it in an anonymous hash with the given options. This is because there is no obvious order you may wish to override these in and a hash is easier to read and understand then "undef, undef, undef, 1, undef, undef, renderButton, undef, 0" when you mostly want default behaviors. +=head1 SYNOPSIS -The package provides a function called 'render', called as Apache::lonnavmaps::renderer->render({}). +The main handler generates the navigational listing for the course, +the other objects export this information in a usable fashion for +other modules. + +=head1 OVERVIEW + +X When a user enters a course, LON-CAPA examines the +course structure and caches it in what is often referred to as the +"big hash" X. You can see it if you are logged into +LON-CAPA, in a course, by going to /adm/test. (You may need to +tweak the /home/httpd/lonTabs/htpasswd file to view it.) The +content of the hash will be under the heading "Big Hash". + +Big Hash contains, among other things, how resources are related +to each other (next/previous), what resources are maps, which +resources are being chosen to not show to the student (for random +selection), and a lot of other things that can take a lot of time +to compute due to the amount of data that needs to be collected and +processed. + +Apache::lonnavmaps provides an object model for manipulating this +information in a higher-level fashion then directly manipulating +the hash. It also provides access to several auxilary functions +that aren't necessarily stored in the Big Hash, but are a per- +resource sort of value, like whether there is any feedback on +a given resource. + +Apache::lonnavmaps also abstracts away branching, and someday, +conditions, for the times where you don't really care about those +things. + +Apache::lonnavmaps also provides fairly powerful routines for +rendering navmaps, and last but not least, provides the navmaps +view for when the user clicks the NAV button. + +B: Apache::lonnavmaps I works for the "currently +logged in user"; if you want things like "due dates for another +student" lonnavmaps can not directly retrieve information like +that. You need the EXT function. This module can still help, +because many things, such as the course structure, are constant +between users, and Apache::lonnavmaps can help by providing +symbs for the EXT call. + +The rest of this file will cover the provided rendering routines, +which can often be used without fiddling with the navmap object at +all, then documents the Apache::lonnavmaps::navmap object, which +is the key to accessing the Big Hash information, covers the use +of the Iterator (which provides the logic for traversing the +somewhat-complicated Big Hash data structure), documents the +Apache::lonnavmaps::Resource objects that are returned by + +=head1 Subroutine: render + +The navmap renderer package provides a sophisticated rendering of the +standard navigation maps interface into HTML. The provided nav map +handler is actually just a glorified call to this. + +Because of the large number of parameters this function accepts, +instead of passing it arguments as is normal, pass it in an anonymous +hash with the desired options. -=head2 Overview of Columns +The package provides a function called 'render', called as +Apache::lonnavmaps::render({}). -The renderer will build an HTML table for the navmap and return it. The table is consists of several columns, and a row for each resource (or possibly each part). You tell the renderer how many columns to create and what to place in each column, optionally using one or more of the preparent columns, and the renderer will assemble the table. +=head2 Overview of Columns -Any additional generally useful column types should be placed in the renderer code here, so anybody can use it anywhere else. Any code specific to the current application (such as the addition of elements in a column) should be placed in the code of the thing using the renderer. +The renderer will build an HTML table for the navmap and return +it. The table is consists of several columns, and a row for each +resource (or possibly each part). You tell the renderer how many +columns to create and what to place in each column, optionally using +one or more of the prepared columns, and the renderer will assemble +the table. + +Any additional generally useful column types should be placed in the +renderer code here, so anybody can use it anywhere else. Any code +specific to the current application (such as the addition of +elements in a column) should be placed in the code of the thing using +the renderer. + +At the core of the renderer is the array reference COLS (see Example +section below for how to pass this correctly). The COLS array will +consist of entries of one of two types of things: Either an integer +representing one of the pre-packaged column types, or a sub reference +that takes a resource reference, a part number, and a reference to the +argument hash passed to the renderer, and returns a string that will +be inserted into the HTML representation as it. -At the core of the renderer is the array reference COLS (see Example section below for how to pass this correctly). The COLS array will consist of entries of one of two types of things: Either an integer representing one of the pre-packaged column types, or a sub reference that takes a resource reference, a part number, and a reference to the argument hash passed to the renderer, and returns a string that will be inserted into the HTML representation as it. +All other parameters are ways of either changing how the columns +are printing, or which rows are shown. -The pre-packaged column names are refered to by constants in the Apache::lonnavmaps::renderer namespace. The following currently exist: +The pre-packaged column names are refered to by constants in the +Apache::lonnavmaps namespace. The following currently exist: =over 4 -=item * B: The general info about the resource: Link, icon for the type, etc. The first column in the standard nav map display. This column also accepts the following parameter in the renderer hash: +=item * B: + +The general info about the resource: Link, icon for the type, etc. The +first column in the standard nav map display. This column provides the +indentation effect seen in the B'; } -Note these functions are responsible for the TD tags, which allow them to override vertical and horizontal alignment, etc. +Note these functions are responsible for the TD tags, which allow them +to override vertical and horizontal alignment, etc. =head2 Parameters +Minimally, you should be +able to get away with just using 'cols' (to specify the columns +shown), 'url' (necessary for the folders to link to the current screen +correctly), and possibly 'queryString' if your app calls for it. In +that case, maintaining the state of the folders will be done +automatically. + =over 4 -=item * B: A reference to a fresh ::iterator to use from the navmaps. The rendering will reflect the options passed to the iterator, so you can use that to just render a certain part of the course, if you like. +=item * B: default: constructs one from %ENV + +A reference to a fresh ::iterator to use from the navmaps. The +rendering will reflect the options passed to the iterator, so you can +use that to just render a certain part of the course, if you like. If +one is not passed, the renderer will attempt to construct one from +ENV{'form.filter'} and ENV{'form.condition'} information, plus the +'iterator_map' parameter if any. + +=item * B: default: not used + +If you are letting the renderer do the iterator handling, you can +instruct the renderer to render only a particular map by passing it +the source of the map you want to process, like +'/res/103/jerf/navmap.course.sequence'. + +=item * B: default: constructs one from %ENV + +A reference to a navmap, used only if an iterator is not passed in. If +this is necessary to make an iterator but it is not passed in, a new +one will be constructed based on ENV info. This is useful to do basic +error checking before passing it off to render. + +=item * B: default: must be passed in + +The standard Apache response object. This must be passed to the +renderer or the course hash will be locked. + +=item * B: default: empty (useless) + +An array reference + +=item * B:default true + +A flag. If true, a line for the resource itself, and a line +for each part will be displayed. If not, only one line for each +resource will be displayed. + +=item * B: default true + +A flag. If true, if all parts of the problem have the same +status and that status is Nothing Set, Correct, or Network Failure, +then only one line will be displayed for that resource anyhow. If no, +all parts will always be displayed. If showParts is 0, this is +ignored. + +=item * B: default: determined from %ENV + +A string identifying the URL to place the anchor 'curloc' at. +It is the responsibility of the renderer user to +ensure that the #curloc is in the URL. By default, determined through +the use of the ENV{} 'jump' information, and should normally "just +work" correctly. + +=item * B: default: empty string + +A Symb identifying where to place the 'here' marker. The empty +string means no marker. + +=item * B: default: 25 pixel whitespace image + +A string identifying the indentation string to use. -=item * B: An array reference +=item * B: default: empty -=item * B: A flag. If yes (default), a line for the resource itself, and a line for each part will be displayed. If not, only one line for each resource will be displayed. +A string which will be prepended to the query string used when the +folders are opened or closed. You can use this to pass +application-specific values. -=item * B: A flag. If yes (default), if all parts of the problem have the same status and that status is Nothing Set, Correct, or Network Failure, then only one line will be displayed for that resource anyhow. If no, all parts will always be displayed. If showParts is 0, this is ignored. +=item * B: default: none -=item * B: A string identifying the URL to place the anchor 'curloc' at. Default to no anchor at all. It is the responsibility of the renderer user to ensure that the #curloc is in the URL. +The url the folders will link to, which should be the current +page. Required if the resource info column is shown, and you +are allowing the user to open and close folders. -=item * B: A URL identifying where to place the 'here' marker. +=item * B: default: no jumping -=item * B: A Symb identifying where to place the 'here' marker. +Describes the currently-open row number to cause the browser to jump +to, because the user just opened that folder. By default, pulled from +the Jump information in the ENV{'form.*'}. -=item * B: A string identifying the indentation string to use. By default, this is a 25 pixel whitespace image with no alt text. +=item * B: default: false -=item * B: A string which will be prepended to the query string used when the folders are opened or closed. +If true, print the key that appears on the top of the standard +navmaps. -=item * B: The url the folders will link to, which should be the current page. Required if the resource info column is shown. +=item * B: default: true -=item * B: Describes the currently-open row number to cause the browser to jump to, because the user just opened that folder. +If true, print the "Close all folders" or "open all folders" +links. -=item * B: The standard Apache response object. If you pass this to the render, it will use it to flush the table every 20 rows and handle the rendering itself. +=item * B: default: sub {return 1;} (accept everything) + +A function that takes the resource object as its only parameter and +returns a true or false value. If true, the resource is displayed. If +false, it is simply skipped in the display. + +=item * B: default: false + +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; for example, see the "Show Uncompleted Homework" view on the +B"; + my $target; + if ($ENV{'environment.remotenavmap'} eq 'on') { + $target=' target="loncapaclient" '; + } + if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) { + $result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText"; + } else { + $result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText"; + } return $result; } @@ -832,8 +1130,11 @@ sub render_communication_status { if ($resource->getErrors()) { my $errors = $resource->getErrors(); + my $errorcount = 0; foreach (split(/,/, $errors)) { + last if ($errorcount>=10); # Only output 10 bombs maximum if ($_) { + $errorcount++; $errorHTML .= ' ' . '{'multipart'} && $part != '0') { + $discussionHTML = $feedbackHTML = $errorHTML = ''; + } + return ""; } @@ -857,7 +1162,8 @@ sub render_quick_status { if ($resource->is_problem() && !$firstDisplayed) { - my $icon = $statusIconMap{$resource->status($part)}; + + my $icon = $statusIconMap{$resource->simpleStatus($part)}; my $alt = $iconAltTags{$icon}; if ($icon) { $result .= "\n"; @@ -880,7 +1186,7 @@ sub render_long_status { if ($resource->is_problem()) { $color = $colormap{$resource->status}; - if (dueInLessThen24Hours($resource, $part) || + if (dueInLessThan24Hours($resource, $part) || lastTry($resource, $part)) { $color = $hurryUpColor; } @@ -896,14 +1202,94 @@ sub render_long_status { if ($resource->is_map() && advancedUser() && $resource->randompick()) { $result .= '(randomly select ' . $resource->randompick() .')'; } - - $result .= " \n"; + + # Debugging code + #$result .= " " . $resource->awarded($part) . '/' . $resource->weight($part) . + # ' - Part: ' . $part; + + $result .= "\n"; return $result; } +# Colors obtained by taking the icons, matching the colors, and +# possibly reducing the Value (HSV) of the color, if it's too bright +# for text, generally by one third or so. +my %statusColors = + ( + $resObj->CLOSED => '#000000', + $resObj->OPEN => '#998b13', + $resObj->CORRECT => '#26933f', + $resObj->INCORRECT => '#c48207', + $resObj->ATTEMPTED => '#a87510', + $resObj->ERROR => '#000000' + ); +my %statusStrings = + ( + $resObj->CLOSED => 'Not yet open', + $resObj->OPEN => 'Open', + $resObj->CORRECT => 'Correct', + $resObj->INCORRECT => 'Incorrect', + $resObj->ATTEMPTED => 'Attempted', + $resObj->ERROR => 'Network Error' + ); +my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR); + +use Data::Dumper; +sub render_parts_summary_status { + my ($resource, $part, $params) = @_; + if (!$resource->is_problem() && !$resource->contains_problem) { return ''; } + if ($params->{showParts}) { + return ''; + } + + my $td = "\n"; + my @probs; + + if ($resource->contains_problem) { + @probs=$resource->retrieveResources($resource,sub { $_[0]->is_problem() },1,0); + } else { + @probs=($resource); + } + my $return; + my %overallstatus; + my $totalParts; + foreach my $resource (@probs) { + # If there is a single part, just show the simple status + if ($resource->singlepart()) { + my $status = $resource->simpleStatus(${$resource->parts}[0]); + $overallstatus{$status}++; + $totalParts++; + next; + } + # Now we can be sure the $part doesn't really matter. + my $statusCount = $resource->simpleStatusCount(); + my @counts; + foreach my $status (@statuses) { + # decouple display order from the simpleStatusCount order + my $slot = Apache::lonnavmaps::resource::statusToSlot($status); + if ($statusCount->[$slot]) { + $overallstatus{$status}+=$statusCount->[$slot]; + $totalParts+=$statusCount->[$slot]; + } + } + } + $return.= $td . $totalParts . ' parts: '; + foreach my $status (@statuses) { + if ($overallstatus{$status}) { + $return.="" . $overallstatus{$status} . ' ' + . $statusStrings{$status} . ""; + } + } + $return.= $endtd; + return $return; +} + my @preparedColumns = (\&render_resource, \&render_communication_status, - \&render_quick_status, \&render_long_status); + \&render_quick_status, \&render_long_status, + \&render_parts_summary_status); sub setDefault { my ($val, $default) = @_; @@ -913,39 +1299,247 @@ sub setDefault { sub render { my $args = shift; - + &Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING}); + my $result = ''; + # Configure the renderer. my $cols = $args->{'cols'}; if (!defined($cols)) { # no columns, no nav maps. return ''; } + my $mustCloseNavMap = 0; + my $navmap; + if (defined($args->{'navmap'})) { + $navmap = $args->{'navmap'}; + } + + my $r = $args->{'r'}; + my $queryString = $args->{'queryString'}; + my $jump = $args->{'jump'}; + my $here = $args->{'here'}; + my $suppressNavmap = setDefault($args->{'suppressNavmap'}, 0); + my $closeAllPages = setDefault($args->{'closeAllPages'}, 0); + my $currentJumpDelta = 2; # change this to change how many resources are displayed + # before the current resource when using #current + + # If we were passed 'here' information, we are not rendering + # after a folder manipulation, and we were not passed an + # iterator, make sure we open the folders to show the "here" + # marker + my $filterHash = {}; + # Figure out what we're not displaying + foreach (split(/\,/, $ENV{"form.filter"})) { + if ($_) { + $filterHash->{$_} = "1"; + } + } + + # Filter: Remember filter function and add our own filter: Refuse + # to show hidden resources unless the user can see them. + my $userCanSeeHidden = advancedUser(); + my $filterFunc = setDefault($args->{'filterFunc'}, + sub {return 1;}); + if (!$userCanSeeHidden) { + # Without renaming the filterfunc, the server seems to go into + # an infinite loop + my $oldFilterFunc = $filterFunc; + $filterFunc = sub { my $res = shift; return !$res->randomout() && + &$oldFilterFunc($res);}; + } + + my $condition = 0; + if ($ENV{'form.condition'}) { + $condition = 1; + } + + if (!$ENV{'form.folderManip'} && !defined($args->{'iterator'})) { + # Step 1: Check to see if we have a navmap + if (!defined($navmap)) { + $navmap = Apache::lonnavmaps::navmap->new(); + $mustCloseNavMap = 1; + } + + # Step two: Locate what kind of here marker is necessary + # Determine where the "here" marker is and where the screen jumps to. + + if ($ENV{'form.postsymb'}) { + $here = $jump = $ENV{'form.postsymb'}; + } elsif ($ENV{'form.postdata'}) { + # couldn't find a symb, is there a URL? + my $currenturl = $ENV{'form.postdata'}; + #$currenturl=~s/^http\:\/\///; + #$currenturl=~s/^[^\/]+//; + + $here = $jump = &Apache::lonnet::symbread($currenturl); + } else { + &Apache::lonnet::logthis("Hrrm,"); + + } + + # Step three: Ensure the folders are open + my $mapIterator = $navmap->getIterator(undef, undef, undef, 1); + my $curRes; + my $found = 0; + + # We only need to do this if we need to open the maps to show the + # current position. This will change the counter so we can't count + # for the jump marker with this loop. + while (($curRes = $mapIterator->next()) && !$found) { + if (ref($curRes) && $curRes->symb() eq $here) { + my $mapStack = $mapIterator->getStack(); + + # Ensure the parent maps are open + for my $map (@{$mapStack}) { + if ($condition) { + undef $filterHash->{$map->map_pc()}; + } else { + $filterHash->{$map->map_pc()} = 1; + } + } + $found = 1; + } + } + } + + if ( !defined($args->{'iterator'}) && $ENV{'form.folderManip'} ) { # we came from a user's manipulation of the nav page + # If this is a click on a folder or something, we want to preserve the "here" + # from the querystring, and get the new "jump" marker + $here = $ENV{'form.here'}; + $jump = $ENV{'form.jump'}; + } + my $it = $args->{'iterator'}; if (!defined($it)) { - # no iterator, no nav map. - return ''; + # Construct a default iterator based on $ENV{'form.'} information + + # Step 1: Check to see if we have a navmap + if (!defined($navmap)) { + $navmap = Apache::lonnavmaps::navmap->new(); + $mustCloseNavMap = 1; + } + + # See if we're being passed a specific map + if ($args->{'iterator_map'}) { + my $map = $args->{'iterator_map'}; + $map = $navmap->getResourceByUrl($map); + my $firstResource = $map->map_start(); + my $finishResource = $map->map_finish(); + + $args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition); + } else { + $args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition); + } } + + # (re-)Locate the jump point, if any + # Note this does not take filtering or hidden into account... need + # to be fixed? + my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0); + my $curRes; + my $foundJump = 0; + my $counter = 0; + while (($curRes = $mapIterator->next()) && !$foundJump) { + if (ref($curRes)) { $counter++; } + + if (ref($curRes) && $jump eq $curRes->symb()) { + + # This is why we have to use the main iterator instead of the + # potentially faster DFS: The count has to be the same, so + # the order has to be the same, which DFS won't give us. + $args->{'currentJumpIndex'} = $counter; + $foundJump = 1; + } + } + my $showParts = setDefault($args->{'showParts'}, 1); my $condenseParts = setDefault($args->{'condenseParts'}, 1); - my $jumpToURL = $args->{'jumpToURL'}; - my $jumpToSymb = $args->{'jumpToSymb'}; - my $hereURL = $args->{'hereURL'}; - my $hereSymb = $args->{'hereSymb'}; # keeps track of when the current resource is found, # so we can back up a few and put the anchor above the # current resource - my $currentJumpIndex = setDefault($args->{'currentJumpIndex'}, 0); - my $currentJumpDelta = 2; # change this to change how many resources are displayed - # before the current resource when using #current - my $r = $args->{'r'}; - + my $printKey = $args->{'printKey'}; + my $printCloseAll = $args->{'printCloseAll'}; + if (!defined($printCloseAll)) { $printCloseAll = 1; } - + # Print key? + if ($printKey) { + $result .= '
' . $resource->{ID} . '"; - + + my $indentLevel = $params->{'indentLevel'}; + if ($newBranchText) { $indentLevel--; } + # print indentation - for (my $i = 0; $i < $params->{'indentLevel'} - - $params->{'deltaLevel'}; $i++) { + for (my $i = 0; $i < $indentLevel; $i++) { $result .= $params->{'indentString'}; } @@ -780,26 +1068,36 @@ sub render_resource { my $curMarkerEnd = ''; # Is this the current resource? - if (!$params->{'displayedHereMarker'} && - (($params->{'hereType'} == SYMB() && - $resource->symb() eq $params->{'here'}) || - ($params->{'hereType'} == URL() && - $resource->src() eq $params->{'here'}))) { + if (!$params->{'displayedHereMarker'} && + $resource->symb() eq $params->{'here'} ) { $curMarkerBegin = '> '; $curMarkerEnd = '<'; + $params->{'displayedHereMarker'} = 1; } - if ($resource->is_problem() && $part ne "0" && + if ($resource->is_problem() && $part ne '0' && !$params->{'condensed'}) { - $partLabel = " (Part $part)"; + my $displaypart=&Apache::lonnet::EXT('resource.'.$part.'.display', + $resource->symb()); + unless ($displaypart) { $displaypart=$part; } + $partLabel = " (Part: $displaypart)"; + $link.='#'.&Apache::lonnet::escape($part); $title = ""; } - if ($params->{'multipart'} && $params->{'condensed'}) { + if ($params->{'condensed'} && $resource->countParts() > 1) { $nonLinkedText .= ' (' . $resource->countParts() . ' parts)'; } - $result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText$discussionHTML$feedbackHTML$errorHTML $linkopen$alt$linkclose\n"; + my $endtd = "
'; + my $date=localtime; + $result.=''; + if ($navmap->{LAST_CHECK}) { + $result .= + ' '.&mt('New discussion since').' '. + strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})). + ''; + } else { + $result .= ''; + } + + $result .= '
Key:    '. + ' '.&mt('New message (click to open)').'

'. + '

  '. + ' '.&mt('Discussions').''. + '   '.&mt('New message (click to open)'). + '
'; + } + + if ($printCloseAll && !$args->{'resource_no_folder_link'}) { + if ($condition) { + $result.="".&mt('Close All Folders').""; + } else { + $result.="".&mt('Open All Folders').""; + } + $result .= "\n"; + } + + # Check for any unread discussions in all resources. + if (!$args->{'resource_no_folder_link'}) { + my $totdisc = 0; + my $haveDisc = ''; + my @allres=$navmap->retrieveResources(); + foreach my $resource (@allres) { + if ($resource->hasDiscussion()) { + my $ressymb; + if ($resource->symb() =~ m-(___adm/\w+/\w+)/(\d+)/bulletinboard$-) { + $ressymb = 'bulletin___'.$2.$1.'/'.$2.'/bulletinboard'; + } else { + $ressymb = $resource->symb(); + } + $haveDisc .= $ressymb.':'; + $totdisc ++; + } + } + if ($totdisc > 0) { + $haveDisc =~ s/:$//; + my %lt = &Apache::lonlocal::texthash( + 'mapr' => 'Mark all posts read', + ); + $result .= (<$lt{'mapr'} (Help: NavMaps_MarkPostsLink) +
+ + +
+END + } else { + $result .= '
'; + } + } + $result .= "
\n"; + if ($r) { + $r->print($result); + $r->rflush(); + $result = ""; + } # End parameter setting # Data - my $result .= '' ."\n"; + $result .= '
' ."\n"; my $res = "Apache::lonnavmaps::resource"; my %condenseStatuses = ( $res->NETWORK_FAILURE => 1, @@ -961,18 +1555,79 @@ sub render { $args->{'indentString'} = setDefault($args->{'indentString'}, ""); $args->{'displayedHereMarker'} = 0; + # If we're suppressing empty sequences, look for them here. Use DFS for speed, + # since structure actually doesn't matter, except what map has what resources. + if ($args->{'suppressEmptySequences'}) { + my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap, + $it->{FIRST_RESOURCE}, + $it->{FINISH_RESOURCE}, + {}, undef, 1); + my $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_map()) { + $curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0; + # Sequences themselves do not count as visible children, + # unless those sequences also have visible children. + # This means if a sequence appears, there's a "promise" + # that there's something under it if you open it, somewhere. + } else { + # Not a sequence: if it's filtered, ignore it, otherwise + # rise up the stack and mark the sequences as having children + if (&$filterFunc($curRes)) { + for my $sequence (@{$dfsit->getStack()}) { + $sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1; + } + } + } + } + } continue { + $curRes = $dfsit->next(); + } + } + my $displayedJumpMarker = 0; # Set up iteration. - my $depth = 1; - $it->next(); # discard initial BEGIN_MAP - my $curRes = $it->next(); my $now = time(); my $in24Hours = $now + 24 * 60 * 60; my $rownum = 0; - while ($depth > 0) { - if ($curRes == $it->BEGIN_MAP()) { $depth++; } - if ($curRes == $it->END_MAP()) { $depth--; } + # export "here" marker information + $args->{'here'} = $here; + + $args->{'indentLevel'} = -1; # first BEGIN_MAP takes this to 0 + my @resources; + my $code='';# sub { !(shift->is_map();) }; + if ($args->{'sort'} eq 'title') { + @resources=$navmap->retrieveResources(undef, + sub { !shift->is_map(); }); + @resources= sort {lc($a->compTitle) cmp lc($b->compTitle)} @resources; + } elsif ($args->{'sort'} eq 'duedate') { + @resources=$navmap->retrieveResources(undef, + sub { shift->is_problem(); }); + @resources= sort + { + if ($a->duedate ne $b->duedate) { + return $a->duedate cmp $b->duedate; + } else { + lc($a->compTitle) cmp lc($b->compTitle) + } + } @resources; + } + + while (1) { + if ($args->{'sort'}) { + $curRes = shift(@resources); + } else { + $curRes = $it->next($closeAllPages); + } + if (!$curRes) { last; } # Maintain indentation level. if ($curRes == $it->BEGIN_MAP() || @@ -990,21 +1645,28 @@ sub render { # If this isn't an actual resource, continue on if (!ref($curRes)) { - $curRes = $it->next(); next; } - $args->{'counter'}++; - # reserve space for branch symbol - $args->{'deltalevel'} = $args->{'isNewBranch'}? 1 : 0; - if ($args->{'indentLevel'} - $args->{'deltalevel'} < 0) { - # If this would be at a negative depth (top-level maps in - # new-style courses, we want to suppress their title display) - # then ignore it. - $curRes = $it->next(); + # If this has been filtered out, continue on + if (!(&$filterFunc($curRes))) { + $args->{'isNewBranch'} = 0; # Don't falsely remember this + next; + } + + # If this is an empty sequence and we're filtering them, continue on + if ($curRes->is_map() && $args->{'suppressEmptySequences'} && + !$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) { next; } + # If we're suppressing navmaps and this is a navmap, continue on + if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) { + next; + } + + $args->{'counter'}++; + # Does it have multiple parts? $args->{'multipart'} = 0; $args->{'condensed'} = 0; @@ -1013,22 +1675,22 @@ sub render { # Decide what parts to show. if ($curRes->is_problem() && $showParts) { @parts = @{$curRes->parts()}; - $args->{'multipart'} = scalar(@parts) > 1; + $args->{'multipart'} = $curRes->multipart(); if ($condenseParts) { # do the condensation if (!$curRes->opendate("0")) { - @parts = ("0"); + @parts = (); $args->{'condensed'} = 1; } if (!$args->{'condensed'}) { # Decide whether to condense based on similarity - my $status = $curRes->status($parts[1]); - my $due = $curRes->duedate($parts[1]); - my $open = $curRes->opendate($parts[1]); + my $status = $curRes->status($parts[0]); + my $due = $curRes->duedate($parts[0]); + my $open = $curRes->opendate($parts[0]); my $statusAllSame = 1; my $dueAllSame = 1; my $openAllSame = 1; - for (my $i = 2; $i < scalar(@parts); $i++) { + for (my $i = 1; $i < scalar(@parts); $i++) { if ($curRes->status($parts[$i]) != $status){ $statusAllSame = 0; } @@ -1049,29 +1711,25 @@ sub render { if (($statusAllSame && defined($condenseStatuses{$status})) || ($dueAllSame && $status == $curRes->OPEN && $statusAllSame)|| ($openAllSame && $status == $curRes->OPEN_LATER && $statusAllSame) ){ - @parts = ($parts[1]); + @parts = ($parts[0]); $args->{'condensed'} = 1; } - } + # Multipart problem with one part: always "condense" (happens + # to match the desirable behavior) + if ($curRes->countParts() == 1) { + @parts = ($parts[0]); + $args->{'condensed'} = 1; + } } + } - } else { - # Not showing parts - @parts = ("0"); # show main part only - } - # If the multipart problem was condensed, "forget" it was multipart if (scalar(@parts) == 1) { $args->{'multipart'} = 0; - } - - # In the event of a network error, display one part. - # If this is a single part, we can at least show the correct - # status, but if it's multipart, we're lost, since we can't - # retreive the metadata to count the parts - if ($curRes->{RESOURCE_ERROR}) { - @parts = ("0"); + } else { + # Add part 0 so we display it correctly. + unshift @parts, '0'; } # Now, we've decided what parts to show. Loop through them and @@ -1084,14 +1742,23 @@ sub render { # Set up some data about the parts that the cols might want my $filter = $it->{FILTER}; - my $stack = $it->getStack(); - my $src = getLinkForResource($stack); - + my $src; + if ($args->{'sort'}) { + $src = $curRes->src(); # FIXME this is wrong for .pages + } else { + my $stack = $it->getStack(); + $src=getLinkForResource($stack); + } + my $anchor=''; + if ($src=~s/(\#.*)$//) { + $anchor=$1; + } my $srcHasQuestion = $src =~ /\?/; $args->{"resourceLink"} = $src. ($srcHasQuestion?'&':'?') . - 'symb=' . &Apache::lonnet::escape($curRes->symb()); - + 'symb=' . &Apache::lonnet::escape($curRes->symb()). + $anchor; + # Now, display each column. foreach my $col (@$cols) { my $colHTML = ''; @@ -1114,23 +1781,50 @@ sub render { $result .= $colHTML . "\n"; } $result .= " \n"; + $args->{'isNewBranch'} = 0; } - + if ($r && $rownum % 20 == 0) { $r->print($result); $result = ""; $r->rflush(); } - - $curRes = $it->next(); + } continue { + if ($r) { + # If we have the connection, make sure the user is still connected + my $c = $r->connection; + if ($c->aborted()) { + # Who cares what we do, nobody will see it anyhow. + return ''; + } + } } # Print out the part that jumps to #curloc if it exists + # delay needed because the browser is processing the jump before + # it finishes rendering, so it goes to the wrong place! + # onload might be better, but this routine has no access to that. + # On mozilla, the 0-millisecond timeout seems to prevent this; + # it's quite likely this might fix other browsers, too, and + # certainly won't hurt anything. if ($displayedJumpMarker) { - $result .= "\n"; + $result .= " +"; } $result .= "
"; + + if ($r) { + $r->print($result); + $result = ""; + $r->rflush(); + } + + if ($mustCloseNavMap) { $navmap->untieHashes(); } return $result; } @@ -1141,23 +1835,68 @@ package Apache::lonnavmaps::navmap; =pod -lonnavmaps provides functions and objects for dealing with the compiled course hashes generated when a user enters the course, the Apache handler for the "Navigation Map" button, and a flexible prepared renderer for navigation maps that are easy to use anywhere. +=head1 Object: Apache::lonnavmaps::navmap + +=head2 Overview + +The navmap object's job is to provide access to the resources +in the course as Apache::lonnavmaps::resource objects, and to +query and manage the relationship between those resource objects. + +Generally, you'll use the navmap object in one of three basic ways. +In order of increasing complexity and power: + +=over 4 + +=item * C<$navmap-EgetByX>, where X is B, B, B or B. This provides + various ways to obtain resource objects, based on various identifiers. + Use this when you want to request information about one object or + a handful of resources you already know the identities of, from some + other source. For more about Ids, Symbs, and MapPcs, see the + Resource documentation. Note that Url should be a B, + not your first choice; it only works when there is only one + instance of the resource in the course, which only applies to + maps, and even that may change in the future. + +=item * CretrieveResources(args)>. This + retrieves resources matching some criterion and returns them + in a flat array, with no structure information. Use this when + you are manipulating a series of resources, based on what map + the are in, but do not care about branching, or exactly how + the maps and resources are related. This is the most common case. + +=item * C<$it = $navmap-EgetIterator(args)>. This allows you traverse + the course's navmap in various ways without writing the traversal + code yourself. See iterator documentation below. Use this when + you need to know absolutely everything about the course, including + branches and the precise relationship between maps and resources. + +=back + +=head2 Creation And Destruction -=head1 navmap object: Encapsulating the compiled nav map +To create a navmap object, use the following function: -navmap is an object that encapsulates a compiled course map and provides a reasonable interface to it. +=over 4 + +=item * Bnew>(): -Most notably it provides a way to navigate the map sensibly and a flexible iterator that makes it easy to write various renderers based on nav maps. +Creates a new navmap object. Returns the navmap object if this is +successful, or B if not. -You must obtain resource objects through the navmap object. +=back + +When you are done with the $navmap object, you I call +$navmap->untieHashes(), or you'll prevent the current user from using that +course until the web server is restarted. (!) =head2 Methods =over 4 -=item * B(navHashFile, parmHashFile, genCourseAndUserOptions, genMailDiscussStatus): Binds a new navmap object to the compiled nav map hash and parm hash given as filenames. genCourseAndUserOptions is a flag saying whether the course options and user options hash should be generated. This is for when you are using the parameters of the resources that require them; see documentation in resource object documentation. genMailDiscussStatus causes the nav map to retreive information about the email and discussion status of resources. Returns the navmap object if this is successful, or B if not. You must check for undef; errors will occur when you try to use the other methods otherwise. +=item * B(first, finish, filter, condition): -=item * B(first, finish, filter, condition): See iterator documentation below. +See iterator documentation below. =cut @@ -1170,11 +1909,6 @@ sub new { my $class = ref($proto) || $proto; my $self = {}; - $self->{NAV_HASH_FILE} = shift; - $self->{PARM_HASH_FILE} = shift; - $self->{GENERATE_COURSE_USER_OPT} = shift; - $self->{GENERATE_EMAIL_DISCUSS_STATUS} = shift; - # Resource cache stores navmap resources as we reference them. We generate # them on-demand so we don't pay for creating resources unless we use them. $self->{RESOURCE_CACHE} = {}; @@ -1185,134 +1919,162 @@ sub new { # tie the nav hash - if (!(tie(%navmaphash, 'GDBM_File', $self->{NAV_HASH_FILE}, + my %navmaphash; + my %parmhash; + my $courseFn = $ENV{"request.course.fn"}; + if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db", &GDBM_READER(), 0640))) { return undef; } - if (!(tie(%parmhash, 'GDBM_File', $self->{PARM_HASH_FILE}, + if (!(tie(%parmhash, 'GDBM_File', "${courseFn}_parms.db", &GDBM_READER(), 0640))) { - untie $self->{PARM_HASH}; + untie %{$self->{PARM_HASH}}; return undef; } - $self->{HASH_TIED} = 1; $self->{NAV_HASH} = \%navmaphash; $self->{PARM_HASH} = \%parmhash; + $self->{PARM_CACHE} = {}; bless($self); return $self; } -sub init { +sub generate_course_user_opt { my $self = shift; + if ($self->{COURSE_USER_OPT_GENERATED}) { return; } - # If the course opt hash and the user opt hash should be generated, - # generate them - if ($self->{GENERATE_COURSE_USER_OPT}) { - my $uname=$ENV{'user.name'}; - my $udom=$ENV{'user.domain'}; - my $uhome=$ENV{'user.home'}; - my $cid=$ENV{'request.course.id'}; - my $chome=$ENV{'course.'.$cid.'.home'}; - my ($cdom,$cnum)=split(/\_/,$cid); - - my $userprefix=$uname.'_'.$udom.'_'; - - my %courserdatas; my %useropt; my %courseopt; my %userrdatas; - unless ($uhome eq 'no_host') { + my $uname=$ENV{'user.name'}; + my $udom=$ENV{'user.domain'}; + my $uhome=$ENV{'user.home'}; + my $cid=$ENV{'request.course.id'}; + my $chome=$ENV{'course.'.$cid.'.home'}; + my ($cdom,$cnum)=split(/\_/,$cid); + + my $userprefix=$uname.'_'.$udom.'_'; + + my %courserdatas; my %useropt; my %courseopt; my %userrdatas; + unless ($uhome eq 'no_host') { # ------------------------------------------------- Get coursedata (if present) - unless ((time-$courserdatas{$cid.'.last_cache'})<240) { - my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum. - ':resourcedata',$chome); - if ($reply!~/^error\:/) { - $courserdatas{$cid}=$reply; - $courserdatas{$cid.'.last_cache'}=time; - } - # check to see if network failed - elsif ( $reply=~/no.such.host/i || $reply=~/con.*lost/i ) - { - $self->{NETWORK_FAILURE} = 1; - } - } - foreach (split(/\&/,$courserdatas{$cid})) { - my ($name,$value)=split(/\=/,$_); - $courseopt{$userprefix.&Apache::lonnet::unescape($name)}= - &Apache::lonnet::unescape($value); - } + unless ((time-$courserdatas{$cid.'.last_cache'})<240) { + my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum. + ':resourcedata',$chome); + # Check for network failure + if ( $reply =~ /no.such.host/i || $reply =~ /con_lost/i) { + $self->{NETWORK_FAILURE} = 1; + } elsif ($reply!~/^error\:/) { + $courserdatas{$cid}=$reply; + $courserdatas{$cid.'.last_cache'}=time; + } + } + foreach (split(/\&/,$courserdatas{$cid})) { + my ($name,$value)=split(/\=/,$_); + $courseopt{$userprefix.&Apache::lonnet::unescape($name)}= + &Apache::lonnet::unescape($value); + } # --------------------------------------------------- Get userdata (if present) - unless ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) { - my $reply=&Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome); - if ($reply!~/^error\:/) { - $userrdatas{$uname.'___'.$udom}=$reply; - $userrdatas{$uname.'___'.$udom.'.last_cache'}=time; - } - # check to see if network failed - elsif ( $reply=~/no.such.host/i || $reply=~/con.*lost/i ) - { - $self->{NETWORK_FAILURE} = 1; - } - } - foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) { - my ($name,$value)=split(/\=/,$_); - $useropt{$userprefix.&Apache::lonnet::unescape($name)}= - &Apache::lonnet::unescape($value); - } - $self->{COURSE_OPT} = \%courseopt; - $self->{USER_OPT} = \%useropt; - } - } + unless ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) { + my $reply=&Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome); + if ($reply!~/^error\:/) { + $userrdatas{$uname.'___'.$udom}=$reply; + $userrdatas{$uname.'___'.$udom.'.last_cache'}=time; + } + # check to see if network failed + elsif ( $reply=~/no.such.host/i || $reply=~/con.*lost/i ) + { + $self->{NETWORK_FAILURE} = 1; + } + } + foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) { + my ($name,$value)=split(/\=/,$_); + $useropt{$userprefix.&Apache::lonnet::unescape($name)}= + &Apache::lonnet::unescape($value); + } + $self->{COURSE_OPT} = \%courseopt; + $self->{USER_OPT} = \%useropt; + } - if ($self->{GENERATE_EMAIL_DISCUSS_STATUS}) { - my $cid=$ENV{'request.course.id'}; - my ($cdom,$cnum)=split(/\_/,$cid); - - my %emailstatus = &Apache::lonnet::dump('email_status'); - my $logoutTime = $emailstatus{'logout'}; - my $courseLeaveTime = $emailstatus{'logout_'.$ENV{'request.course.id'}}; - $self->{LAST_CHECK} = ($courseLeaveTime < $logoutTime ? - $courseLeaveTime : $logoutTime); - my %discussiontime = &Apache::lonnet::dump('discussiontimes', - $cdom, $cnum); - my %feedback=(); - my %error=(); - my $keys = &Apache::lonnet::reply('keys:'. - $ENV{'user.domain'}.':'. - $ENV{'user.name'}.':nohist_email', - $ENV{'user.home'}); - - foreach my $msgid (split(/\&/, $keys)) { - $msgid=&Apache::lonnet::unescape($msgid); - my $plain=&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid)); - if ($plain=~/(Error|Feedback) \[([^\]]+)\]/) { - my ($what,$url)=($1,$2); - my %status= - &Apache::lonnet::get('email_status',[$msgid]); - if ($status{$msgid}=~/^error\:/) { - $status{$msgid}=''; - } - - if (($status{$msgid} eq 'new') || - (!$status{$msgid})) { - if ($what eq 'Error') { - $error{$url}.=','.$msgid; - } else { - $feedback{$url}.=','.$msgid; - } - } - } - } - - $self->{FEEDBACK} = \%feedback; - $self->{ERROR_MSG} = \%error; # what is this? JB - $self->{DISCUSSION_TIME} = \%discussiontime; - $self->{EMAIL_STATUS} = \%emailstatus; - - } + $self->{COURSE_USER_OPT_GENERATED} = 1; + + return; +} - $self->{PARM_CACHE} = {}; +sub generate_email_discuss_status { + my $self = shift; + my $symb = shift; + if ($self->{EMAIL_DISCUSS_GENERATED}) { return; } + + my $cid=$ENV{'request.course.id'}; + my ($cdom,$cnum)=split(/\_/,$cid); + + my %emailstatus = &Apache::lonnet::dump('email_status'); + my $logoutTime = $emailstatus{'logout'}; + my $courseLeaveTime = $emailstatus{'logout_'.$ENV{'request.course.id'}}; + $self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ? + $courseLeaveTime : $logoutTime); + my %discussiontime = &Apache::lonnet::dump('discussiontimes', + $cdom, $cnum); + my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss', + $ENV{'user.domain'},$ENV{'user.name'},'lastread'); + my %lastreadtime = (); + foreach (keys %lastread) { + my $key = $_; + $key =~ s/_lastread$//; + $lastreadtime{$key} = $lastread{$_}; + } + + my %feedback=(); + my %error=(); + my $keys = &Apache::lonnet::reply('keys:'. + $ENV{'user.domain'}.':'. + $ENV{'user.name'}.':nohist_email', + $ENV{'user.home'}); + + foreach my $msgid (split(/\&/, $keys)) { + $msgid=&Apache::lonnet::unescape($msgid); + my $plain=&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid)); + if ($plain=~/(Error|Feedback) \[([^\]]+)\]/) { + my ($what,$url)=($1,$2); + my %status= + &Apache::lonnet::get('email_status',[$msgid]); + if ($status{$msgid}=~/^error\:/) { + $status{$msgid}=''; + } + + if (($status{$msgid} eq 'new') || + (!$status{$msgid})) { + if ($what eq 'Error') { + $error{$url}.=','.$msgid; + } else { + $feedback{$url}.=','.$msgid; + } + } + } + } + + $self->{FEEDBACK} = \%feedback; + $self->{ERROR_MSG} = \%error; # what is this? JB + $self->{DISCUSSION_TIME} = \%discussiontime; + $self->{EMAIL_STATUS} = \%emailstatus; + $self->{LAST_READ} = \%lastreadtime; + + $self->{EMAIL_DISCUSS_GENERATED} = 1; +} + +sub get_user_data { + my $self = shift; + if ($self->{RETRIEVED_USER_DATA}) { return; } + + # Retrieve performance data on problems + my %student_data = Apache::lonnet::currentdump($ENV{'request.course.id'}, + $ENV{'user.domain'}, + $ENV{'user.name'}); + $self->{STUDENT_DATA} = \%student_data; + + $self->{RETRIEVED_USER_DATA} = 1; } # Internal function: Takes a key to look up in the nav hash and implements internal @@ -1322,6 +2084,15 @@ sub navhash { return $self->{NAV_HASH}->{$key}; } +=pod + +=item * B(): Returns true if the course map is defined, + false otherwise. Undefined course maps indicate an error somewhere in + LON-CAPA, and you will not be able to proceed with using the navmap. + See the B