--- loncom/interface/lonnavmaps.pm 2003/02/04 16:14:27 1.134 +++ loncom/interface/lonnavmaps.pm 2008/12/21 16:27:26 1.415.2.3 @@ -1,8 +1,7 @@ - # The LearningOnline Network with CAPA # Navigate Maps Handler # -# $Id: lonnavmaps.pm,v 1.134 2003/02/04 16:14:27 bowersj2 Exp $ +# $Id: lonnavmaps.pm,v 1.415.2.3 2008/12/21 16:27:26 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -26,28 +25,20 @@ # # 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 GDBM_File; use Apache::loncommon(); +use Apache::lonenc(); +use Apache::lonlocal; +use Apache::lonnet; use POSIX qw (floor strftime); - -my %navmaphash; -my %parmhash; +use Time::HiRes qw( gettimeofday tv_interval ); +use LONCAPA; +use DateTime(); # symbolic constants sub SYMB { return 1; } @@ -56,670 +47,73 @@ sub NOTHING { return 3; } # Some data +my $resObj = "Apache::lonnavmaps::resource"; -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 handler { - my $r = shift; - real_handler($r); -} - -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'); - } else { - $r->content_type('text/html'); - } - $r->send_http_header; - return OK; - } - - # Send header, don't cache this page - if ($ENV{'browser.mathml'}) { - $r->content_type('text/xml'); - } else { - $r->content_type('text/html'); - } - &Apache::loncommon::no_cache($r); - $r->send_http_header; - - # Create the nav map - my $navmap = Apache::lonnavmaps::navmap->new( - $ENV{"request.course.fn"}.".db", - $ENV{"request.course.fn"}."_parms.db", 1, 1); - - - if (!defined($navmap)) { - my $requrl = $r->uri; - $ENV{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized"; - return HTTP_NOT_ACCEPTABLE; - } - - $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(); - } - } - - - # 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"); - } else { - $r->print("Open All Folders"); - } - - $r->print('
 '); - $r->rflush(); - - # Check that it's defined - if (!($navmap->courseMapDefined())) { - $r->print('Coursemap undefined.' . - ''); - return OK; - } - - # Grab a resource object so we have access to the constants; this - # is technically not proper, but should be harmless - my $res = $navmap->firstResource(); - - # These are some data tables, which make it easy to change some of - # of the specific visualization parameters if desired. - - # Defines a status->color mapping, null string means don't color - my %colormap = - ( $res->NETWORK_FAILURE => '', - $res->CORRECT => '', - $res->EXCUSED => '#3333FF', - $res->PAST_DUE_ANSWER_LATER => '', - $res->PAST_DUE_NO_ANSWER => '', - $res->ANSWER_OPEN => '#006600', - $res->OPEN_LATER => '', - $res->TRIES_LEFT => '', - $res->INCORRECT => '', - $res->OPEN => '', - $res->NOTHING_SET => '' ); - # 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"; - - # Keep these mappings in sync with lonquickgrades, which uses the colors - # instead of the icons. - my %statusIconMap = - ( $res->NETWORK_FAILURE => '', - $res->NOTHING_SET => '', - $res->CORRECT => 'navmap.correct.gif', - $res->EXCUSED => 'navmap.correct.gif', - $res->PAST_DUE_NO_ANSWER => 'navmap.wrong.gif', - $res->PAST_DUE_ANSWER_LATER => 'navmap.wrong.gif', - $res->ANSWER_OPEN => 'navmap.wrong.gif', - $res->OPEN_LATER => '', - $res->TRIES_LEFT => 'navmap.open.gif', - $res->INCORRECT => 'navmap.wrong.gif', - $res->OPEN => 'navmap.open.gif', - $res->ATTEMPTED => 'navmap.open.gif' ); - - my %iconAltTags = - ( 'navmap.correct.gif' => 'Correct', - 'navmap.wrong.gif' => 'Incorrect', - 'navmap.open.gif' => 'Open' ); - - my %condenseStatuses = - ( $res->NETWORK_FAILURE => 1, - $res->NOTHING_SET => 1, - $res->CORRECT => 1 ); - - my %filterHash; - # Figure out what we're not displaying - foreach (split(/\,/, $ENV{"form.filter"})) { - if ($_) { - $filterHash{$_} = "1"; - } - } - - # 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"); - - # 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, force inlined maps to display - - 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 $looped = 0; - - # We only need to do this if we need to open the maps to show the - # current position. This will change the counter so we can't count - # for the jump marker with this loop. - while ($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; - } - } - $ENV{'form.alreadyHere'} = 1; - } - $looped = 1; +# Keep these mappings in sync with lonquickgrades, which uses the colors +# instead of the icons. +my %statusIconMap = + ( + $resObj->CLOSED => '', + $resObj->OPEN => 'navmap.open.gif', + $resObj->CORRECT => 'navmap.correct.gif', + $resObj->PARTIALLY_CORRECT => 'navmap.partial.gif', + $resObj->INCORRECT => 'navmap.wrong.gif', + $resObj->ATTEMPTED => 'navmap.ellipsis.gif', + $resObj->ERROR => '' + ); + +my %iconAltTags = + ( 'navmap.correct.gif' => 'Correct', + 'navmap.wrong.gif' => 'Incorrect', + 'navmap.open.gif' => 'Open' ); - $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; - } - - $curRes = $mapIterator->next(); - } - - undef $res; # so we don't accidentally use it later - my $indentLevel = 0; - my $indentString = ""; - - my $isNewBranch = 0; - my $now = time(); - my $in24Hours = $now + 24 * 60 * 60; - my $displayedHereMarker = 0; - my $displayedJumpMarker = 0; - - # We know the first thing is a BEGIN_MAP (see "$self->{STARTED}" - # code in iterator->next), so ignore the first one - $mapIterator = $navmap->getIterator(undef, undef, \%filterHash, - $condition); - $mapIterator->next(); - $curRes = $mapIterator->next(); - $depth = 1; - - my @backgroundColors = ("#FFFFFF", "#F6F6F6"); - my $rowNum = 0; - - $counter = 0; - - while ($depth > 0) { - if ($curRes == $mapIterator->BEGIN_MAP() || - $curRes == $mapIterator->BEGIN_BRANCH()) { - $indentLevel++; - } - if ($curRes == $mapIterator->END_MAP() || - $curRes == $mapIterator->END_BRANCH()) { - $indentLevel--; - } - if ($curRes == $mapIterator->BEGIN_BRANCH()) { - $isNewBranch = 1; - } - if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; } - if ($curRes == $mapIterator->END_MAP()) { $depth--; } - - if (ref($curRes)) { $counter++; } - - if (ref($curRes)) { - - my $deltalevel = $isNewBranch? 1 : 0; # reserves space for branch icon - - if ($indentLevel - $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 = $mapIterator->next(); - next; - } - - # Step one: Decide which parts to show - my @parts = @{$curRes->parts()}; - my $multipart = scalar(@parts) > 1; - my $condensed = 0; - - if ($curRes->is_problem()) { - - # Is it multipart? - if ($multipart) { - # If it's multipart, see if part 0 is "open" - # if it is, display all parts, if it isn't, - # just display first - if (!$curRes->opendate("0")) { - # no parts are open, display as one part - @parts = ("0"); - $condensed = 1; - } else { - # Otherwise, only display part 0 if we want to - # attach feedback or email information to it - if ($curRes->hasDiscussion() || $curRes->getFeedback()) { - # Is this right? I think this will toss it - # if it DOES have discussion, not if it doesn't? - # - Jeremy (yes, commenting on his own code) - shift @parts; - } else { - # Now, we decide whether to condense the - # parts due to similarity - my $status = $curRes->status($parts[1]); - my $due = $curRes->duedate($parts[1]); - my $open = $curRes->opendate($parts[1]); - my $statusAllSame = 1; - my $dueAllSame = 1; - my $openAllSame = 1; - for (my $i = 2; $i < scalar(@parts); $i++) { - if ($curRes->status($parts[$i]) != $status){ - $statusAllSame = 0; - } - if ($curRes->duedate($parts[$i]) != $due ) { - $dueAllSame = 0; - } - if ($curRes->opendate($parts[$i]) != $open) { - $openAllSame = 0; - } - } - - # $*allSame is true if all the statuses were - # the same. Now, if they are all the same and - # match one of the statuses to condense, or they - # are all open with the same due date, or they are - # all OPEN_LATER with the same open date, display the - # status of the first non-zero part (to get the 'correct' - # status right, since 0 is never 'correct' or 'open'). - if (($statusAllSame && defined($condenseStatuses{$status})) || - ($dueAllSame && $status == $curRes->OPEN && $statusAllSame)|| - ($openAllSame && $status == $curRes->OPEN_LATER && $statusAllSame) ){ - @parts = ($parts[1]); - $condensed = 1; - } - } - } - } - - } else { - $parts[0] = "0"; # this is to get past foreach loop below - # you can consider a non-problem resource as a resource - # with only one part without loss, and it simplifies the looping - } - - # Is it a multipart problem with a single part, now in - # @parts with "0" filtered out? If so, 'forget' it's a multi-part - # problem and treat it like a single-part problem. - if ( scalar(@parts) == 1 ) { - $multipart = 0; - } - - # Display one part, in event of network error. - # If this is a single part, we can at least show the correct - # status, but if it's multipart, we're lost, since we can't - # retreive the metadata to count the parts - if ($curRes->{RESOURCE_ERROR}) { - @parts = ("0"); - } - - # Step Two: Print the actual data. - - # For each part we intend to display... - foreach my $part (@parts) { - - my $nonLinkedText = ""; # unlinked stuff after title - - my $stack = $mapIterator->getStack(); - my $src = getLinkForResource($stack); - - # Pass the correct symb on the querystring, so the - # remote will figure out where we are if we click a link - my $srcHasQuestion = $src =~ /\?/; - my $link = $src. - ($srcHasQuestion?'&':'?') . - 'symb='.&Apache::lonnet::escape($curRes->symb()). - '"'; - - my $title = $curRes->compTitle(); - if ($src=~/^\/uploaded\//) { - $nonLinkedText=$title; - $title=''; - } - my $partLabel = ""; - my $newBranchText = ""; - - # If this is a new branch, label it so - if ($isNewBranch) { - $newBranchText = ""; - $isNewBranch = 0; - } - - # links to open and close the folders - my $linkopen = ""; - my $linkclose = ""; - - my $icon = "\"\""; - if ($curRes->is_problem()) { - if ($part eq "0" || $condensed) { - $icon = ''; - } else { - $icon = $indentString; - } - } - - # Display the correct icon, link to open or shut map - if ($curRes->is_map()) { - my $mapId = $curRes->map_pc(); - my $nowOpen = (!defined($filterHash{$mapId})); - if ($condition) {$nowOpen = !$nowOpen;} - $icon = $nowOpen ? - "navmap.folder.closed.gif" : "navmap.folder.open.gif"; - $icon = "\"\""; - $linkopen = ""; - $linkclose = ""; - - } - - my $colorizer = ""; - my $color; - if ($curRes->is_problem()) { - $color = $colormap{$curRes->status}; - - if (dueInLessThen24Hours($curRes, $part) || - lastTry($curRes, $part)) { - $color = $hurryUpColor; - } - - if ($color ne "") { - $colorizer = "bgcolor=\"$color\""; - } - } - - if ($curRes->randomout()) { - $nonLinkedText .= ' (hidden) '; - } - - $rowNum++; - my $backgroundColor = $backgroundColors[$rowNum % scalar(@backgroundColors)]; - - # FIRST COL: The resource indentation, branch icon, name, and anchor - $r->print(" \n"); - - # SECOND COL: Is there text, feedback, errors?? - my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = ""; - - if ($curRes->hasDiscussion()) { - $discussionHTML = $linkopen . - '' . - $linkclose; - } - - if ($curRes->getFeedback()) { - my $feedback = $curRes->getFeedback(); - foreach (split(/\,/, $feedback)) { - if ($_) { - $feedbackHTML .= ' ' - . ''; - } - } - } - - if ($curRes->getErrors()) { - my $errors = $curRes->getErrors(); - foreach (split(/,/, $errors)) { - if ($_) { - $errorHTML .= ' ' - . ''; - } - } - } - - $r->print(""); - - # Is this the first displayed part of a multi-part problem - # that has not been condensed, so we should suppress these two - # columns so we don't display useless status info about part - # "0"? - my $firstDisplayed = !$condensed && $multipart && $part eq "0"; - - # THIRD COL: Problem status icon - if ($curRes->is_problem() && - !$firstDisplayed) { - my $icon = $statusIconMap{$curRes->status($part)}; - my $alt = $iconAltTags{$icon}; - if ($icon) { - $r->print("\n"); - } else { - $r->print("\n"); - } - } else { # not problem, no icon - $r->print("\n"); - } - - # FOURTH COL: Text description - $r->print("\n"); - - if (!($counter % 20)) { $r->rflush(); } - if ($counter == 2) { $r->rflush(); } - } - } - $curRes = $mapIterator->next(); - } - - $r->print("
\n"); - - # Print the anchor if necessary - if ($counter == $currentJumpIndex - $currentJumpDelta ) { - $r->print(''); - $displayedJumpMarker = 1; - } - - # print indentation - for (my $i = 0; $i < $indentLevel - $deltalevel; $i++) { - $r->print($indentString); - } - - $r->print(" ${newBranchText}${linkopen}$icon${linkclose}\n"); - - my $curMarkerBegin = ""; - my $curMarkerEnd = ""; - - # Is this the current resource? - if (!$displayedHereMarker && - (($hereType == SYMB() && $curRes->symb eq $here) || - ($hereType == URL() && $curRes->src eq $here))) { - $curMarkerBegin = '> '; - $curMarkerEnd = ' <'; - $displayedHereMarker = 1; - } - - if ($curRes->is_problem() && $part ne "0" && !$condensed) { - $partLabel = " (Part $part)"; - $title = ""; - } - if ($multipart && $condensed) { - $nonLinkedText .= ' (' . $curRes->countParts() . ' parts)'; - } - - $r->print(" $curMarkerBegin$title$partLabel $curMarkerEnd $nonLinkedText"); - - #if ($curRes->{RESOURCE_ERROR}) { - # $r->print(&Apache::loncommon::help_open_topic ("Navmap_Host_Down", - # 'Host down')); - # } - - $r->print("$discussionHTML$feedbackHTML$errorHTML $linkopen\"$alt\"$linkclose  \n"); - - if ($curRes->kind() eq "res" && - $curRes->is_problem() && - !$firstDisplayed) { - $r->print ("") if ($color); - $r->print (getDescription($curRes, $part)); - $r->print ("") if ($color); - } - if ($curRes->is_map() && advancedUser() && $curRes->randompick()) { - $r->print('(randomly select ' . $curRes->randompick() .')'); - } - - $r->print(" 
"); - - # Print out the part that jumps to #curloc if it exists - if ($displayedJumpMarker) { - $r->print(''); - } - - # 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' }); - $r->print('|' . $render . '|'); - - $navmap->untieHashes(); - - $r->print(""); - $r->rflush(); +# Defines a status->color mapping, null string means don't color +my %colormap = + ( $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 => '', + $resObj->PARTIALLY_CORRECT => '#006600' + ); +# And a special case in the nav map; what to do when the assignment +# is not yet done and due in less than 24 hours +my $hurryUpColor = "#FF0000"; - return OK; +sub close { + if ($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 } # Convenience functions: Returns a string that adds or subtracts @@ -745,15 +139,26 @@ sub removeFromFilter { # Convenience function: Given a stack returned from getStack on the iterator, # return the correct src() value. -# Later, this should add an anchor when we start putting anchors in pages. sub getLinkForResource { my $stack = shift; my $res; # 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)) { + my $anchor; + if ($res->is_page()) { + foreach my $item (@$stack) { if (defined($item)) { $anchor = $item; } } + $anchor=&escape($anchor->shown_symb()); + return ($res->link(),$res->shown_symb(),$anchor); + } + # in case folder was skipped over as "only sequence" + my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb()); + if ($map=~/\.page$/) { + my $url=&Apache::lonnet::clutter($map); + $anchor=&escape($src->shown_symb()); + return ($url,$res->shown_symb(),$anchor); + } } } @@ -761,16 +166,19 @@ sub getLinkForResource { # (when we first recurse on a map, it puts an undefined resource # on the bottom because $self->{HERE} isn't defined yet, and we # want the src for the map anyhow) - foreach (@$stack) { - if (defined($_)) { $res = $_; } + foreach my $item (@$stack) { + if (defined($item)) { $res = $item; } } - return $res->src(); + if ($res) { + return ($res->link(),$res->shown_symb()); + } + return; } -# 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. @@ -779,70 +187,88 @@ sub getDescription { my $part = shift; my $status = $res->status($part); - if ($status == $res->NETWORK_FAILURE) { return ""; } + my $open = $res->opendate($part); + my $due = $res->duedate($part); + my $answer = $res->answerdate($part); + + 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($part)); + return &mt("Open ") .timeToHumanString($open,'start'); } if ($status == $res->OPEN) { - if ($res->duedate($part)) { - return "Due " . timeToHumanString($res->duedate($part)); + if ($due) { + if ($res->is_practice()) { + return &mt("Closes ")." " .timeToHumanString($due,'start'); + } else { + return &mt("Due")." " .timeToHumanString($due,'end'); + } } else { - return "Open, no due date"; + return &mt("Open, no due date"); } } if ($status == $res->PAST_DUE_ANSWER_LATER) { - return "Answer open " . timeToHumanString($res->answerdate($part)); + return &mt("Answer open")." " .timeToHumanString($answer,'start'); } if ($status == $res->PAST_DUE_NO_ANSWER) { - return "Was due " . timeToHumanString($res->duedate($part)); - } - if ($status == $res->ANSWER_OPEN) { - return "Answer available"; + if ($res->is_practice()) { + return &mt("Closed")." " . timeToHumanString($due,'start'); + } else { + return &mt("Was due")." " . timeToHumanString($due,'end'); + } + } + if (($status == $res->ANSWER_OPEN || $status == $res->PARTIALLY_CORRECT) + && $res->handgrade($part) ne 'yes') { + 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); my $maxtries = $res->maxtries($part); my $triesString = ""; if ($tries && $maxtries) { - $triesString = "($tries of $maxtries tries used)"; + $triesString = '('.&mt('[_1] of [quant,_2,try,tries] used',$tries,$maxtries).')'; if ($maxtries > 1 && $maxtries - $tries == 1) { $triesString = "$triesString"; } } - if ($res->duedate()) { - return "Due " . timeToHumanString($res->duedate($part)) . + if ($due) { + return &mt("Due")." " . timeToHumanString($due,'end') . " $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 +# Convenience function, so others can use it: Is the problem due in less than # 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 -# part, with more then one try to begin with, not due yet and still can be done? +# part, with more than one try to begin with, not due yet and still can be done? sub lastTry { my $res = shift; my $part = shift; @@ -850,13 +276,14 @@ 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. +# This puts a human-readable name on the env variable. + sub advancedUser { - return $ENV{'user.adv'}; + return $env{'request.role.adv'}; } @@ -868,18 +295,20 @@ sub advancedUser { # print "Answer available $timestring" # Very, very, very, VERY English-only... goodness help a localizer on # this func... + + sub timeToHumanString { - my ($time) = @_; + my ($time,$type,$format) = @_; + # zero, '0' and blank are bad times if (!$time) { - return 'never'; + return &mt('never'); } - + unless (&Apache::lonlocal::current_language()=~/^en/) { + return &Apache::lonlocal::locallocaltime($time); + } my $now = time(); - my @time = localtime($time); - my @now = localtime($now); - # Positive = future my $delta = $time - $now; @@ -905,13 +334,13 @@ sub timeToHumanString { my $tense = $inPast ? " ago" : ""; my $prefix = $inPast ? "" : "in "; - # Less then a minute + # Less than a minute if ( $delta < $minute ) { if ($delta == 1) { return "${prefix}1 second$tense"; } return "$prefix$delta seconds$tense"; } - # Less then an hour + # Less than an hour if ( $delta < $hour ) { # If so, use minutes my $minutes = floor($delta / 60); @@ -919,7 +348,7 @@ sub timeToHumanString { return "$prefix$minutes minutes$tense"; } - # Is it less then 24 hours away? If so, + # Is it less than 24 hours away? If so, # display hours + minutes if ( $delta < $hour * 24) { my $hours = floor($delta / $hour); @@ -938,28 +367,48 @@ sub timeToHumanString { return "$prefix$hourString$minuteString$tense"; } - # Less then 5 days away, display day of the week and + my $dt = DateTime->from_epoch(epoch => $time) + ->set_time_zone(&Apache::lonlocal::gettimezone()); + + # If there's a caller supplied format, use it. + + if ($format ne '') { + my $timeStr = $dt->strftime($format); + return $timeStr.' ('.$dt->time_zone_short_name().')'; + } + + # Less than 5 days away, display day of the week and # HH:MM + if ( $delta < $day * 5 ) { - my $timeStr = strftime("%A, %b %e at %I:%M %P", localtime($time)); - $timeStr =~ s/12:00 am/midnight/; + my $timeStr = $dt->strftime("%A, %b %e at %I:%M %P (%Z)"); + $timeStr =~ s/12:00 am/00:00/; $timeStr =~ s/12:00 pm/noon/; - return ($inPast ? "last " : "next ") . + return ($inPast ? "last " : "this ") . $timeStr; } + my $conjunction='on'; + if ($type eq 'start') { + $conjunction='at'; + } elsif ($type eq 'end') { + $conjunction='by'; + } # Is it this year? - if ( $time[5] == $now[5]) { + my $dt_now = DateTime->from_epoch(epoch => $now) + ->set_time_zone(&Apache::lonlocal::gettimezone()); + if ( $dt->year() == $dt_now->year()) { # 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/; + my $timeStr = $dt->strftime("$conjunction %A, %b %e at %I:%M %P (%Z)"); + $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/; + my $timeStr = + $dt->strftime("$conjunction %A, %b %e %Y at %I:%M %P (%Z)"); + $timeStr =~ s/12:00 am/00:00/; $timeStr =~ s/12:00 pm/noon/; return $timeStr; } @@ -968,47 +417,174 @@ 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 than 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 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