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version 1.54, 2002/09/24 20:01:05
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version 1.160, 2003/03/13 20:56:13
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| # The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
| # Navigate Maps Handler |
# Navigate Maps Handler |
| # |
# |
|
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| # 3/1/1,6/1,17/1,29/1,30/1,2/8,9/21,9/24,9/25 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 |
# YEAR=2002 |
| # 1/1 Gerd Kortemeyer |
# 1/1 Gerd Kortemeyer |
| # |
# Oct-Nov Jeremy Bowers |
| |
# YEAR=2003 |
| |
# Jeremy Bowers ... lots of days |
| |
|
| package Apache::lonnavmaps; |
package Apache::lonnavmaps; |
| |
|
| use strict; |
use strict; |
| use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
| use Apache::lonnet(); |
|
| use Apache::loncommon(); |
use Apache::loncommon(); |
| use HTML::TokeParser; |
use Apache::lonmenu(); |
| use GDBM_File; |
use POSIX qw (floor strftime); |
| |
|
| # -------------------------------------------------------------- Module Globals |
|
| my %hash; |
|
| my @rows; |
|
| |
|
| # |
|
| # These cache hashes need to be independent of user, resource and course |
|
| # (user and course can/should be in the keys) |
|
| # |
|
| |
|
| my %courserdatas; |
|
| my %userrdatas; |
|
| |
|
| # |
my %navmaphash; |
| # These global hashes are dependent on user, course and resource, |
|
| # and need to be initialized every time when a sheet is calculated |
|
| # |
|
| my %courseopt; |
|
| my %useropt; |
|
| my %parmhash; |
my %parmhash; |
| |
|
| # This parameter keeps track of whether obtaining the user's information |
# symbolic constants |
| # failed, which the colorizer in astatus can use |
sub SYMB { return 1; } |
| my $networkFailedFlag = 0; |
sub URL { return 2; } |
| |
sub NOTHING { return 3; } |
| # ------------------------------------------------------------------ Euclid gcd |
|
| |
# Some data |
| sub euclid { |
|
| my ($e,$f)=@_; |
my $resObj = "Apache::lonnavmaps::resource"; |
| my $a; my $b; my $r; |
|
| if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; } |
# Keep these mappings in sync with lonquickgrades, which uses the colors |
| while ($r!=0) { |
# instead of the icons. |
| $a=$b; $b=$r; |
my %statusIconMap = |
| $r=$a%$b; |
( $resObj->NETWORK_FAILURE => '', |
| |
$resObj->NOTHING_SET => '', |
| |
$resObj->CORRECT => 'navmap.correct.gif', |
| |
$resObj->EXCUSED => 'navmap.correct.gif', |
| |
$resObj->PAST_DUE_NO_ANSWER => 'navmap.wrong.gif', |
| |
$resObj->PAST_DUE_ANSWER_LATER => 'navmap.wrong.gif', |
| |
$resObj->ANSWER_OPEN => 'navmap.wrong.gif', |
| |
$resObj->OPEN_LATER => '', |
| |
$resObj->TRIES_LEFT => 'navmap.open.gif', |
| |
$resObj->INCORRECT => 'navmap.wrong.gif', |
| |
$resObj->OPEN => 'navmap.open.gif', |
| |
$resObj->ATTEMPTED => 'navmap.open.gif' ); |
| |
|
| |
my %iconAltTags = |
| |
( 'navmap.correct.gif' => 'Correct', |
| |
'navmap.wrong.gif' => 'Incorrect', |
| |
'navmap.open.gif' => 'Open' ); |
| |
|
| |
# 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 => '' ); |
| |
# 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'); |
| |
} |
| } |
} |
| return $b; |
|
| } |
} |
| |
|
| # --------------------------------------------------------------------- Parmval |
sub handler { |
| |
my $r = shift; |
| # -------------------------------------------- Figure out a cascading parameter |
real_handler($r); |
| # |
} |
| # For this function to work |
|
| # |
|
| # * parmhash needs to be tied |
|
| # * courseopt and useropt need to be initialized for this user and course |
|
| # |
|
| |
|
| sub parmval { |
|
| my ($what,$symb)=@_; |
|
| my $cid=$ENV{'request.course.id'}; |
|
| my $csec=$ENV{'request.course.sec'}; |
|
| my $uname=$ENV{'user.name'}; |
|
| my $udom=$ENV{'user.domain'}; |
|
| |
|
| unless ($symb) { return ''; } |
sub real_handler { |
| my $result=''; |
my $r = shift; |
| |
|
| my ($mapname,$id,$fn)=split(/\_\_\_/,$symb); |
# Handle header-only request |
| |
if ($r->header_only) { |
| |
if ($ENV{'browser.mathml'}) { |
| |
$r->content_type('text/xml'); |
| |
} else { |
| |
$r->content_type('text/html'); |
| |
} |
| |
$r->send_http_header; |
| |
return OK; |
| |
} |
| |
|
| # ----------------------------------------------------- Cascading lookup scheme |
# Send header, don't cache this page |
| my $rwhat=$what; |
if ($ENV{'browser.mathml'}) { |
| $what=~s/^parameter\_//; |
$r->content_type('text/xml'); |
| $what=~s/\_/\./; |
} else { |
| |
$r->content_type('text/html'); |
| |
} |
| |
&Apache::loncommon::no_cache($r); |
| |
$r->send_http_header; |
| |
|
| my $symbparm=$symb.'.'.$what; |
# Create the nav map |
| my $mapparm=$mapname.'___(all).'.$what; |
my $navmap = Apache::lonnavmaps::navmap->new( |
| my $usercourseprefix=$uname.'_'.$udom.'_'.$cid; |
$ENV{"request.course.fn"}.".db", |
| |
$ENV{"request.course.fn"}."_parms.db", 1, 1); |
| |
|
| my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what; |
|
| my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm; |
|
| my $seclevelm=$usercourseprefix.'.['.$csec.'].'.$mapparm; |
|
| |
|
| my $courselevel= $usercourseprefix.'.'.$what; |
if (!defined($navmap)) { |
| my $courselevelr=$usercourseprefix.'.'.$symbparm; |
my $requrl = $r->uri; |
| my $courselevelm=$usercourseprefix.'.'.$mapparm; |
$ENV{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized"; |
| |
return HTTP_NOT_ACCEPTABLE; |
| # ---------------------------------------------------------- first, check user |
|
| if ($uname) { |
|
| if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; } |
|
| if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; } |
|
| if ($useropt{$courselevel}) { return $useropt{$courselevel}; } |
|
| } |
} |
| |
|
| # ------------------------------------------------------- second, check course |
$r->print("<html><head>\n"); |
| if ($csec) { |
$r->print("<title>Navigate Course Contents</title>"); |
| if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; } |
# ------------------------------------------------------------ Get query string |
| if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; } |
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register']); |
| if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; } |
|
| |
# ----------------------------------------------------- Force menu registration |
| |
my $addentries=''; |
| |
if ($ENV{'form.register'}) { |
| |
$addentries=' onLoad="'.&Apache::lonmenu::loadevents(). |
| |
'" onUnload="'.&Apache::lonmenu::unloadevents().'"'; |
| |
$r->print(&Apache::lonmenu::registerurl(1)); |
| } |
} |
| |
|
| if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; } |
# Header |
| if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; } |
$r->print('</head>'. |
| if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; } |
&Apache::loncommon::bodytag('Navigate Course Contents','', |
| |
$addentries,'','',$ENV{'form.register'})); |
| |
$r->print('<script>window.focus();</script>'); |
| |
|
| |
$r->rflush(); |
| |
|
| |
# Now that we've displayed some stuff to the user, init the navmap |
| |
$navmap->init(); |
| |
|
| |
$r->print('<br> '); |
| |
$r->rflush(); |
| |
|
| |
# Check that it's defined |
| |
if (!($navmap->courseMapDefined())) { |
| |
$r->print('<font size="+2" color="red">Coursemap undefined.</font>' . |
| |
'</body></html>'); |
| |
return OK; |
| |
} |
| |
|
| # ----------------------------------------------------- third, check map parms |
# See if there's only one map in the top-level... if so, |
| |
# automatically display it |
| |
my $iterator = $navmap->getIterator(undef, undef, undef, 0); |
| |
my $depth = 1; |
| |
$iterator->next(); |
| |
my $curRes = $iterator->next(); |
| |
my $sequenceCount = 0; |
| |
my $sequenceId; |
| |
while ($depth > 0) { |
| |
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $iterator->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($curRes) && $curRes->is_sequence()) { |
| |
$sequenceCount++; |
| |
$sequenceId = $curRes->map_pc(); |
| |
} |
| |
|
| |
$curRes = $iterator->next(); |
| |
} |
| |
|
| |
if ($sequenceCount == 1) { |
| |
# The automatic iterator creation in the render call |
| |
# will pick this up. |
| |
$ENV{'form.filter'} = "$sequenceId"; |
| |
} |
| |
|
| |
# renderer call |
| |
my $render = render({ 'cols' => [0,1,2,3], |
| |
'url' => '/adm/navmaps', |
| |
'suppressNavmap' => 1, |
| |
'r' => $r}); |
| |
|
| my $thisparm=$parmhash{$symbparm}; |
$navmap->untieHashes(); |
| if ($thisparm) { return $thisparm; } |
|
| |
|
| # ----------------------------------------------------- fourth , check default |
$r->print("</body></html>"); |
| |
$r->rflush(); |
| |
|
| my $default=&Apache::lonnet::metadata($fn,$rwhat.'.default'); |
return OK; |
| if ($default) { return $default} |
} |
| |
|
| # --------------------------------------------------- fifth , cascade up parts |
# Convenience functions: Returns a string that adds or subtracts |
| |
# the second argument from the first hash, appropriate for the |
| |
# query string that determines which folders to recurse on |
| |
sub addToFilter { |
| |
my $hashIn = shift; |
| |
my $addition = shift; |
| |
my %hash = %$hashIn; |
| |
$hash{$addition} = 1; |
| |
|
| my ($space,@qualifier)=split(/\./,$rwhat); |
return join (",", keys(%hash)); |
| my $qualifier=join('.',@qualifier); |
|
| unless ($space eq '0') { |
|
| my ($part,$id)=split(/\_/,$space); |
|
| if ($id) { |
|
| my $partgeneral=&parmval($part.".$qualifier",$symb); |
|
| if ($partgeneral) { return $partgeneral; } |
|
| } else { |
|
| my $resourcegeneral=&parmval("0.$qualifier",$symb); |
|
| if ($resourcegeneral) { return $resourcegeneral; } |
|
| } |
|
| } |
|
| return ''; |
|
| } |
} |
| |
|
| |
sub removeFromFilter { |
| |
my $hashIn = shift; |
| |
my $subtraction = shift; |
| |
my %hash = %$hashIn; |
| |
|
| |
delete $hash{$subtraction}; |
| |
return join(",", keys(%hash)); |
| |
} |
| |
|
| # ------------------------------------------------------------- Find out status |
# Convenience function: Given a stack returned from getStack on the iterator, |
| # return codes |
# return the correct src() value. |
| # tcode (timecode) |
# Later, this should add an anchor when we start putting anchors in pages. |
| # 1: will open later |
sub getLinkForResource { |
| # 2: is open and not past due yet |
my $stack = shift; |
| # 3: is past due date |
my $res; |
| # 4: due in the next 24 hours |
|
| # |
# Check to see if there are any pages in the stack |
| # code (curent solved status) |
foreach $res (@$stack) { |
| # 1: not attempted |
if (defined($res) && $res->is_page()) { |
| # 2: attempted but wrong, or incorrect by instructor |
return $res->src(); |
| # 3: solved or correct by instructor |
|
| # 4: partially correct (one or more parts correct) |
|
| # "excused" needs to be supported, but is not yet. |
|
| sub astatus { |
|
| my $rid=shift; |
|
| my $code=0; |
|
| my $ctext=''; |
|
| $rid=~/(\d+)\.(\d+)/; |
|
| my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'. |
|
| &Apache::lonnet::declutter($hash{'src_'.$rid}); |
|
| my %duedate=(); |
|
| my %opendate=(); |
|
| my %answerdate=(); |
|
| # need to always check part 0's open/due/answer status |
|
| foreach (sort(split(/\,/,&Apache::lonnet::metadata($hash{'src_'.$rid},'allpo\ssiblekeys')))) { |
|
| if ($_=~/^parameter\_(.*)\_opendate$/) { |
|
| my $part=$1; |
|
| $duedate{$part}=&parmval($part.'.duedate',$symb); |
|
| $opendate{$part}=&parmval($part.'.opendate',$symb); |
|
| $answerdate{$part}=&parmval($part.'.answerdate',$symb); |
|
| if (&parmval($part.'.opendate.type',$symb) eq 'date_interval') { |
|
| $opendate{$part}=$duedate{$part}-$opendate{$part}; |
|
| } |
|
| if (&parmval($part.'.answerdate.type',$symb) eq 'date_interval') { |
|
| $answerdate{$part}=$duedate{$part}+$answerdate{$part}; |
|
| } |
|
| } |
} |
| } |
} |
| my $now=time; |
|
| my $tcode=0; |
|
| |
|
| my %returnhash=&Apache::lonnet::restore($symb); |
# Failing that, return the src of the last resource that is defined |
| |
# (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 = $_; } |
| |
} |
| |
|
| |
return $res->src(); |
| |
} |
| |
|
| foreach (sort(keys(%opendate))) { |
# Convenience function: This seperates the logic of how to create |
| my $duedate=$duedate{$_}; |
# the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned", |
| my $opendate=$opendate{$_}; |
# etc.) into a seperate function. It takes a resource object as the |
| my $answerdate=$answerdate{$_}; |
# first parameter, and the part number of the resource as the second. |
| my $preface=''; |
# It's basically a big switch statement on the status of the resource. |
| unless ($_ eq '0') { $preface=' Part: '.$_.' '; } |
|
| if ($opendate) { |
sub getDescription { |
| if ($now<$duedate || (!$duedate)) { |
my $res = shift; |
| unless ($tcode==4) { $tcode=2; } |
my $part = shift; |
| if ($duedate) { |
my $status = $res->status($part); |
| $ctext.=$preface.'Due: '.localtime($duedate); |
|
| } else { |
if ($status == $res->NETWORK_FAILURE) { return ""; } |
| $ctext.=$preface.'No Due Date'; |
if ($status == $res->NOTHING_SET) { |
| } |
return "Not currently assigned."; |
| if ($now<$opendate) { |
} |
| unless ($tcode) { $tcode=1; } |
if ($status == $res->OPEN_LATER) { |
| $ctext.=$preface.'Open: '.localtime($opendate); |
return "Open " . timeToHumanString($res->opendate($part)); |
| } |
} |
| if ($duedate && $duedate-$now<86400) { |
if ($status == $res->OPEN) { |
| $tcode=4; |
if ($res->duedate($part)) { |
| $ctext.=$preface.'Due: '.localtime($duedate); |
return "Due " . timeToHumanString($res->duedate($part)); |
| } |
|
| } else { |
|
| unless (($tcode==4) || ($tcode eq 2)) { $tcode=3; } |
|
| if ($now<$answerdate) { |
|
| $ctext.='Answer: '.localtime($duedate); |
|
| } |
|
| } |
|
| } else { |
} else { |
| unless (($tcode==2) || ($tcode==4)) { $tcode=1; } |
return "Open, no due date"; |
| } |
} |
| |
} |
| my $status=$returnhash{'resource.'.$_.'.solved'}; |
if ($status == $res->PAST_DUE_ANSWER_LATER) { |
| |
return "Answer open " . timeToHumanString($res->answerdate($part)); |
| if ($status eq 'correct_by_student') { |
} |
| if ($code==0||$code==3) { $code=3; } else { $code=4; } |
if ($status == $res->PAST_DUE_NO_ANSWER) { |
| $ctext.=' solved'; |
return "Was due " . timeToHumanString($res->duedate($part)); |
| } elsif ($status eq 'correct_by_override') { |
} |
| if ($code==0||$code==3) { $code=3; } else { $code=4; } |
if ($status == $res->ANSWER_OPEN) { |
| $ctext.=' override'; |
return "Answer available"; |
| } elsif ($status eq 'incorrect_attempted') { |
} |
| if ($code!=4 && $code!=3) { $code=2; } |
if ($status == $res->EXCUSED) { |
| if ($code==3) { $code=4; } |
return "Excused by instructor"; |
| $ctext.=' ('. |
} |
| ($returnhash{'resource.'.$_.'.tries'}? |
if ($status == $res->ATTEMPTED) { |
| $returnhash{'resource.'.$_.'.tries'}:'0'); |
return "Not yet graded."; |
| my $numtries = &parmval($_.'.maxtries',$symb); |
} |
| if ($numtries) { $ctext.='/'.$numtries.' tries'; } |
if ($status == $res->TRIES_LEFT) { |
| $ctext.=')'; |
my $tries = $res->tries($part); |
| } elsif ($status eq 'incorrect_by_override') { |
my $maxtries = $res->maxtries($part); |
| if ($code!=4 && $code!=3) { $code=2; } |
my $triesString = ""; |
| if ($code==3) { $code=4; } |
if ($tries && $maxtries) { |
| $ctext.=' override'; |
$triesString = "<font size=\"-1\"><i>($tries of $maxtries tries used)</i></font>"; |
| } elsif ($status eq 'excused') { |
if ($maxtries > 1 && $maxtries - $tries == 1) { |
| if ($code==0||$code==3) { $code=3; } else { $code=4; } |
$triesString = "<b>$triesString</b>"; |
| $ctext.=' excused'; |
} |
| |
} |
| |
if ($res->duedate()) { |
| |
return "Due " . timeToHumanString($res->duedate($part)) . |
| |
" $triesString"; |
| } else { |
} else { |
| if ($code==0) { $code=1; } |
return "No due date $triesString"; |
| } |
} |
| } |
} |
| |
} |
| |
|
| |
# Convenience function, so others can use it: Is the problem due in less then |
| |
# 24 hours, and still can be done? |
| |
|
| return 'p'.$code.$tcode.'"'.$ctext.'"'; |
sub dueInLessThen24Hours { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
my $status = $res->status($part); |
| |
|
| |
return ($status == $res->OPEN() || $status == $res->ATTEMPTED() || |
| |
$status == $res->TRIES_LEFT()) && |
| |
$res->duedate() && $res->duedate() < time()+(24*60*60) && |
| |
$res->duedate() > 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? |
| |
sub lastTry { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
|
| sub addresource { |
my $tries = $res->tries($part); |
| my ($resource,$sofar,$rid,$showtypes,$indent,$linkid)=@_; |
my $maxtries = $res->maxtries($part); |
| if ($showtypes eq 'problems') { |
return $tries && $maxtries && $maxtries > 1 && |
| if ($resource!~/\.(problem|exam|quiz|assess|survey|form)$/) { |
$maxtries - $tries == 1 && $res->duedate() && |
| return; |
$res->duedate() > time(); |
| } |
} |
| |
|
| |
# This puts a human-readable name on the ENV variable. |
| |
# FIXME: This needs better logic: Who gets the advanced view of navmaps? |
| |
# As of 3-13-03, it's an open question. Guy doesn't want to check |
| |
# roles directly because it should be a check of capabilities for future |
| |
# role compatibity. There is no capability that matches this one for |
| |
# now, so this is done. (A hack for 1.0 might be to simply check roles |
| |
# anyhow.) |
| |
sub advancedUser { |
| |
return $ENV{'user.adv'}; |
| |
} |
| |
|
| |
|
| |
# timeToHumanString takes a time number and converts it to a |
| |
# human-readable representation, meant to be used in the following |
| |
# manner: |
| |
# print "Due $timestring" |
| |
# print "Open $timestring" |
| |
# print "Answer available $timestring" |
| |
# Very, very, very, VERY English-only... goodness help a localizer on |
| |
# this func... |
| |
sub timeToHumanString { |
| |
my ($time) = @_; |
| |
# zero, '0' and blank are bad times |
| |
if (!$time) { |
| |
return 'never'; |
| } |
} |
| my $brepriv=&Apache::lonnet::allowed('bre',$resource); |
|
| if ($hash{'src_'.$rid}) { |
my $now = time(); |
| if (($brepriv eq '2') || ($brepriv eq 'F')) { |
|
| my $pprefix=''; |
my @time = localtime($time); |
| if ($resource=~/\.(problem|exam|quiz|assess|survey|form)$/) { |
my @now = localtime($now); |
| $pprefix=&astatus($rid); |
|
| } |
# Positive = future |
| $$sofar++; |
my $delta = $time - $now; |
| if ($indent) { $pprefix='i'.$indent.','.$pprefix; } |
|
| if ($linkid) { $pprefix='l'.$linkid.','.$pprefix; } |
my $minute = 60; |
| if (defined($rows[$$sofar])) { |
my $hour = 60 * $minute; |
| $rows[$$sofar].='&'.$pprefix.$rid; |
my $day = 24 * $hour; |
| } else { |
my $week = 7 * $day; |
| $rows[$$sofar]=$pprefix.$rid; |
my $inPast = 0; |
| } |
|
| } |
# Logic in comments: |
| |
# Is it now? (extremely unlikely) |
| |
if ( $delta == 0 ) { |
| |
return "this instant"; |
| } |
} |
| } |
|
| |
|
| sub followlinks () { |
if ($delta < 0) { |
| my ($rid,$sofar,$beenhere,$further,$showtypes,$indent,$linkid)=@_; |
$inPast = 1; |
| my $mincond=1; |
$delta = -$delta; |
| my $next=''; |
|
| foreach (split(/\,/,$hash{'to_'.$rid})) { |
|
| my $thiscond= |
|
| &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); |
|
| if ($thiscond>=$mincond) { |
|
| if ($next) { |
|
| $next.=','.$_.':'.$thiscond; |
|
| } else { |
|
| $next=$_.':'.$thiscond; |
|
| } |
|
| if ($thiscond>$mincond) { $mincond=$thiscond; } |
|
| } |
|
| } |
} |
| my $col=0; |
|
| &Apache::lonxml::debug("following links -$next-"); |
if ( $delta > 0 ) { |
| foreach (split(/\,/,$next)) { |
|
| my ($nextlinkid,$condval)=split(/\:/,$_); |
my $tense = $inPast ? " ago" : ""; |
| if ($condval>=$mincond) { |
my $prefix = $inPast ? "" : "in "; |
| my $now=&tracetable($sofar,$hash{'goesto_'.$nextlinkid}, |
|
| $beenhere,$showtypes,$indent,$linkid); |
# Less then a minute |
| if ($now>$further) { |
if ( $delta < $minute ) { |
| if ($col>0) { |
if ($delta == 1) { return "${prefix}1 second$tense"; } |
| my $string; |
return "$prefix$delta seconds$tense"; |
| for(my $i=0;$i<$col;$i++) { $string.='&'; } |
|
| for(my $i=$further+1;$now-1>$i;$i++) { |
|
| $rows[$i]=$string.$rows[$i]; |
|
| } |
|
| } |
|
| $further=$now; |
|
| } |
|
| } |
} |
| $col++; |
|
| } |
|
| return $further; |
|
| } |
|
| # ------------------------------------------------------------ Build page table |
|
| |
|
| sub tracetable { |
# Less then an hour |
| my ($sofar,$rid,$beenhere,$showtypes,$indent,$linkid)=@_; |
if ( $delta < $hour ) { |
| my $newshowtypes=$showtypes; |
# If so, use minutes |
| my $further=$sofar; |
my $minutes = floor($delta / 60); |
| # $Apache::lonxml::debug=1; |
if ($minutes == 1) { return "${prefix}1 minute$tense"; } |
| &Apache::lonxml::debug("$rid ; $linkid ; $sofar ; $beenhere ; ".$hash{'src_'.$rid}); |
return "$prefix$minutes minutes$tense"; |
| if ($beenhere=~/\&$rid\&/) { return $further; } |
|
| $beenhere.=$rid.'&'; |
|
| |
|
| if (defined($hash{'is_map_'.$rid})) { |
|
| $sofar++; |
|
| my $tprefix=''; |
|
| if ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}} |
|
| eq 'sequence') { |
|
| $tprefix='h'; |
|
| } elsif ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}} |
|
| eq 'page') { |
|
| $tprefix='j'; |
|
| if ($indent) { $tprefix='i'.$indent.','.$tprefix; } |
|
| if ($linkid) { $tprefix='l'.$linkid.','.$tprefix; } |
|
| $newshowtypes='problems'; |
|
| $indent++; |
|
| #if in a .page continue to link the encompising .page |
|
| if (!$linkid) { $linkid=$rid; } |
|
| } |
} |
| if (defined($rows[$sofar])) { |
|
| $rows[$sofar].='&'.$tprefix.$rid; |
# Is it less then 24 hours away? If so, |
| } else { |
# display hours + minutes |
| $rows[$sofar]=$tprefix.$rid; |
if ( $delta < $hour * 24) { |
| |
my $hours = floor($delta / $hour); |
| |
my $minutes = floor(($delta % $hour) / $minute); |
| |
my $hourString = "$hours hours"; |
| |
my $minuteString = ", $minutes minutes"; |
| |
if ($hours == 1) { |
| |
$hourString = "1 hour"; |
| |
} |
| |
if ($minutes == 1) { |
| |
$minuteString = ", 1 minute"; |
| |
} |
| |
if ($minutes == 0) { |
| |
$minuteString = ""; |
| |
} |
| |
return "$prefix$hourString$minuteString$tense"; |
| |
} |
| |
|
| |
# Less then 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/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return ($inPast ? "last " : "next ") . |
| |
$timeStr; |
| } |
} |
| if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && |
|
| (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { |
# Is it this year? |
| my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; |
if ( $time[5] == $now[5]) { |
| $sofar=&tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, |
# Return on Month Day, HH:MM meridian |
| '&'.$frid.'&',$newshowtypes,$indent,$linkid); |
my $timeStr = strftime("on %A, %b %e at %I:%M %P", localtime($time)); |
| &addresource($hash{'src_'.$frid},\$sofar,$frid,$newshowtypes, |
$timeStr =~ s/12:00 am/midnight/; |
| $indent,$linkid); |
$timeStr =~ s/12:00 pm/noon/; |
| if ($tprefix =~ /j$/) { $indent--; $linkid=''; } |
return $timeStr; |
| } |
} |
| } else { |
|
| &addresource($hash{'src_'.$rid},\$sofar,$rid,$showtypes, |
|
| $indent,$linkid); |
|
| } |
|
| |
|
| if (defined($hash{'to_'.$rid})) { |
# Not this year, so show the year |
| $further=&followlinks($rid,$sofar,$beenhere,$further,$showtypes, |
my $timeStr = strftime("on %A, %b %e %G at %I:%M %P", localtime($time)); |
| $indent,$linkid); |
$timeStr =~ s/12:00 am/midnight/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return $timeStr; |
| } |
} |
| |
|
| return $further; |
|
| } |
} |
| |
|
| # ================================================================ Main Handler |
|
| |
|
| sub handler { |
=pod |
| my $r=shift; |
|
| |
|
| &Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING}); |
=head1 navmap renderer |
| |
|
| if ($ENV{'form.jtest'} ne "1") |
The navmaprenderer package provides a sophisticated rendering of the standard navigation maps interface into HTML. The provided nav map handler is actually just a glorified call to this. |
| { |
|
| return new_handle($r); |
|
| } |
|
| |
|
| # ------------------------------------------- Set document type for header only |
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. |
| |
|
| if ($r->header_only) { |
The package provides a function called 'render', called as Apache::lonnavmaps::renderer->render({}). |
| if ($ENV{'browser.mathml'}) { |
|
| $r->content_type('text/xml'); |
|
| } else { |
|
| $r->content_type('text/html'); |
|
| } |
|
| $r->send_http_header; |
|
| return OK; |
|
| } |
|
| my $requrl=$r->uri; |
|
| my $hashtied; |
|
| # ----------------------------------------------------------------- Tie db file |
|
| my $fn; |
|
| if ($ENV{'request.course.fn'}) { |
|
| $fn=$ENV{'request.course.fn'}; |
|
| if (-e "$fn.db") { |
|
| if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) && |
|
| (tie(%parmhash,'GDBM_File', |
|
| $ENV{'request.course.fn'}.'_parms.db', |
|
| &GDBM_READER(),0640))) { |
|
| $hashtied=1; |
|
| } |
|
| } |
|
| } |
|
| if (!$hashtied) { |
|
| $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; |
|
| return HTTP_NOT_ACCEPTABLE; |
|
| } |
|
| |
|
| # ------------------------------------------------------------------- Hash tied |
=head2 Overview of Columns |
| |
|
| if ($ENV{'browser.mathml'}) { |
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. |
| $r->content_type('text/xml'); |
|
| } else { |
|
| $r->content_type('text/html'); |
|
| } |
|
| &Apache::loncommon::no_cache($r); |
|
| $r->send_http_header; |
|
| |
|
| my $firstres=$hash{'map_start_'. |
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 <input> elements in a column) should be placed in the code of the thing using the renderer. |
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
|
| my $lastres=$hash{'map_finish_'. |
|
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
|
| if (!(($firstres) && ($lastres))) { |
|
| $r->print('<html><body>Coursemap undefined.</body></html>'); |
|
| } else { |
|
| |
|
| # ----------------------------------------------------------------- Render page |
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. |
| # -------------------------------------------------------------- Set parameters |
|
| |
|
| |
The pre-packaged column names are refered to by constants in the Apache::lonnavmaps::renderer namespace. The following currently exist: |
| |
|
| # ---------------------------- initialize coursedata and userdata for this user |
=over 4 |
| undef %courseopt; |
|
| undef %useropt; |
|
| |
|
| my $uname=$ENV{'user.name'}; |
=item * B<resource>: 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: |
| 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.'_'.$udom.'_'; |
=over 4 |
| |
|
| unless ($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 ) |
|
| { |
|
| $networkFailedFlag = 1; |
|
| } |
|
| } |
|
| foreach (split(/\&/,$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.'___'.$udom.'.last_cache'}=time; |
|
| } |
|
| } |
|
| foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) { |
|
| my ($name,$value)=split(/\=/,$_); |
|
| $useropt{$userprefix.&Apache::lonnet::unescape($name)}= |
|
| &Apache::lonnet::unescape($value); |
|
| } |
|
| } |
|
| |
|
| @rows=(); |
=item * B<resource_nolink>: If true, the resource will not be linked. Default: false, resource will have links. |
| |
|
| &tracetable(0,$firstres,'&','',0); |
=item * B<resource_part_count>: If true (default), the resource will show a part count if the full part list is not displayed. If false, the resource will never show a part count. |
| |
|
| # ------------------------------------------------------------------ Page parms |
=item * B<resource_no_folder_link>: If true, the resource's folder will not be clickable to open or close it. Default is false. |
| |
|
| my $j; |
=back |
| my $i; |
|
| my $lcm=1; |
|
| my $contents=0; |
|
| |
|
| # ---------------------------------------------- Go through table to get layout |
=item B<communication_status>: Whether there is discussion on the resource, email for the user, or (lumped in here) perl errors in the execution of the problem. This is the second column in the main nav map. |
| |
|
| for ($i=0;$i<=$#rows;$i++) { |
=item B<quick_status>: An icon for the status of a problem, with four possible states: Correct, incorrect, open, or none (not open yet, not a problem). The third column of the standard navmap. |
| if ($rows[$i]) { |
|
| &Apache::lonxml::debug("Row $i is:".$rows[$i]); |
|
| $contents++; |
|
| my @colcont=split(/\&/,$rows[$i]); |
|
| $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); |
|
| } |
|
| } |
|
| |
|
| |
=item B<long_status>: A text readout of the details of the current status of the problem, such as "Due in 22 hours". The fourth column of the standard navmap. |
| |
|
| unless ($contents) { |
=back |
| $r->print('<html><body>Empty Map.</body></html>'); |
|
| } else { |
|
| |
|
| # ------------------------------------------------------------------ Build page |
If you add any others please be sure to document them here. |
| |
|
| my $currenturl=$ENV{'form.postdata'}; |
An example of a column renderer that will show the ID number of a resource, along with the part name if any: |
| $currenturl=~s/^http\:\/\///; |
|
| $currenturl=~s/^[^\/]+//; |
|
| |
|
| # ---------------------------------------------------------------- Send headers |
|
| |
|
| my $date=localtime; |
|
| my $now=time; |
|
| # ----------------------------------------- Get email status and discussiontime |
|
| |
|
| my %emailstatus=&Apache::lonnet::dump('email_status'); |
|
| my $logouttime=$emailstatus{'logout'}; |
|
| my $courseleave=$emailstatus{'logout_'.$ENV{'request.course.id'}}; |
|
| my $lastcheck=($courseleave>$logouttime?$courseleave:$logouttime); |
|
| |
|
| my %discussiontimes=&Apache::lonnet::dump('discussiontimes', |
|
| $cdom,$cnum); |
|
| |
|
| my %feedback=(); |
|
| my %error=(); |
|
| foreach my $msgid (split(/\&/,&Apache::lonnet::reply('keys:'. |
|
| $ENV{'user.domain'}.':'. |
|
| $ENV{'user.name'}.':nohist_email', |
|
| $ENV{'user.home'}))) { |
|
| $msgid=&Apache::lonnet::unescape($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; |
|
| } |
|
| } |
|
| } |
|
| } |
|
| # ----------------------------------------------------------- Start Page Output |
|
| my $bodytagadd=''; |
|
| $r->print( |
|
| '<html><head><title>Navigate Course Map</title></head>'); |
|
| if (($currenturl=~/^\/res/) && |
|
| ($currenturl!~/^\/res\/adm/)) { |
|
| $bodytagadd='onLoad="window.location.hash='."'curloc'".'"'; |
|
| } |
|
| $r->print(&Apache::loncommon::bodytag('Navigate Course Map','', |
|
| $bodytagadd)); |
|
| $r->print('<script>window.focus();</script>'); |
|
| my $desc=$ENV{'course.'.$ENV{'request.course.id'}.'.description'}; |
|
| if (defined($desc)) { $r->print("<h2>$desc</h2>\n"); } |
|
| $r->print("<h3>$date</h3>\n"); |
|
| $r->rflush(); |
|
| $r->print('<img src="/adm/lonMisc/chat.gif"> New discussion since '. |
|
| localtime($lastcheck). |
|
| '<br><img src="/adm/lonMisc/feedback.gif"> New message (click to open)<p>'); |
|
| if (($currenturl=~/^\/res/) && |
|
| ($currenturl!~/^\/res\/adm/)) { |
|
| $r->print('<a href="#curloc">Current Location</a><p>'); |
|
| } |
|
| |
|
| # Handle a network error |
sub { |
| |
my ($resource, $part, $params) = @_; |
| |
if ($part) { return '<td>' . $resource->{ID} . ' ' . $part . '</td>'; } |
| |
return '<td>' . $resource->{ID} . '</td>'; |
| |
} |
| |
|
| if ($networkFailedFlag) |
Note these functions are responsible for the TD tags, which allow them to override vertical and horizontal alignment, etc. |
| { |
|
| $r->print('<H2>LON-CAPA network failure.</H2>'."\n"); |
|
| $r->print("<p>LON-CAPA's network is having difficulties, some problem" . |
|
| " information, such as due dates, will not be available."); |
|
| } |
|
| # ----------------------------------------------------- The little content list |
|
| for ($i=0;$i<=$#rows;$i++) { |
|
| if ($rows[$i]) { |
|
| my @colcont=split(/\&/,$rows[$i]); |
|
| my $avespan=$lcm/($#colcont+1); |
|
| for ($j=0;$j<=$#colcont;$j++) { |
|
| my $rid=$colcont[$j]; |
|
| if ($rid=~/^h(.+)/) { |
|
| $rid=$1; |
|
| $r->print(' <a href="#'. |
|
| $rid.'">'.$hash{'title_'.$rid}. |
|
| '</a><br>'); |
|
| } |
|
| } |
|
| } |
|
| } |
|
| # ----------------------------------------------------------------- Start table |
|
| $r->print('<hr><table cols="'.$lcm.'" border="0">'); |
|
| for ($i=0;$i<=$#rows;$i++) { |
|
| if ($rows[$i]) { |
|
| $r->print("\n<tr>"); |
|
| my @colcont=split(/\&/,$rows[$i]); |
|
| my $avespan=$lcm/($#colcont+1); |
|
| |
|
| # for each item I wish to print on this row... |
|
| for ($j=0;$j<=$#colcont;$j++) { |
|
| my $indent;my $indentstr; |
|
| my $linkid; |
|
| my $rid=$colcont[$j]; |
|
| $rid=~/(\d+)\.(\d+)$/; |
|
| my $src= |
|
| &Apache::lonnet::declutter($hash{'src_'.$1.'.'.$2}); |
|
| my $symb= |
|
| &Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.$src; |
|
| my $add='<td>'; |
|
| my $adde='</td>'; |
|
| my $hwk='<font color="#223322">'; |
|
| my $hwke='</font>'; |
|
| if ($rid=~/^l(\d+\.\d+),(.+)/) { $linkid=$1; $rid=$2; } |
|
| if ($rid=~/^i(\d+),(.+)/) { $indent=$1; $rid=$2; } |
|
| if ($rid=~/^h(.+)/) { |
|
| $rid=$1; |
|
| $add='<th bgcolor="#AAFF55"><a name="'.$rid.'">'; |
|
| $adde='</th>'; |
|
| if (($ENV{'user.adv'}) && |
|
| ($parmhash{$symb.'.0.parameter_randompick'})) { |
|
| $adde=' (randomly select '. |
|
| $parmhash{$symb.'.0.parameter_randompick'}. |
|
| ')</th>'; |
|
| } |
|
| } |
|
| if ($rid=~/^j(.+)/) { $rid=$1; } |
|
| if ($rid=~/^p(\d)(\d)\"([\w\: \(\)\/\,]*)\"(.+)/) { |
|
| # sub astatus describes what code/tcode mean |
|
| my $code=$1; |
|
| my $tcode=$2; |
|
| my $ctext=$3; |
|
| $rid=$4; |
|
| |
|
| # will open later |
|
| if ($tcode eq '1') { |
|
| $add='<td bgcolor="#AAAAAA">'; |
|
| } |
|
| |
|
| # solved/correct |
|
| if ($code eq '3') { |
|
| $add='<td bgcolor="#AAFFAA">'; |
|
| } elsif ($code eq '4') { # partially correct |
|
| $add='<td bgcolor="#E0FFAA">'; |
|
| } else { |
|
| # not attempted |
|
| |
|
| # we end up here on network failure, so pick a neutral |
|
| # color if the network failed instead of bright red. |
|
| if ( $networkFailedFlag ) |
|
| { |
|
| $add = '<td bgcolor="#AAAAAA">'; |
|
| } |
|
| else |
|
| { |
|
| $add='<td bgcolor="#FFAAAA">'; |
|
| } |
|
| |
|
| if ($tcode eq '2') { # open, not past due |
|
| $add='<td bgcolor="#FFFFAA">'; |
|
| } |
|
| |
|
| if ($tcode eq '4') { # due in next 24 hours |
|
| $add='<td bgcolor="#FFFF33">'; |
|
| $adde='</td>'; |
|
| } |
|
| } |
|
| $hwk='<font color="#888811"><b>'; |
|
| $hwke='</b></font>'; |
|
| if ($code eq '1') { |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($code eq '2' || $code eq '4') { |
|
| $hwk='<font color="#992222"><b>'; |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($code eq '3') { |
|
| $hwk='<font color="#229922"><b>'; |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($networkFailedFlag) |
|
| { |
|
| $hwke='</b> (status unavailable)</font>'; |
|
| } |
|
| } |
|
| if ($rid && $hash{'src_'.$rid} eq $currenturl) { |
|
| $add=$add.'<a name="curloc"></a>'. |
|
| '<font color=red size=+2><b>> </b></font>'; |
|
| $adde= |
|
| '<font color=red size=+2><b> <</b></font>'.$adde; |
|
| } |
|
| if ($discussiontimes{$symb}>$lastcheck) { |
|
| $adde= |
|
| '<img border=0 src="/adm/lonMisc/chat.gif">'. |
|
| $adde; |
|
| } |
|
| if ($error{$src}) { |
|
| foreach (split(/\,/,$error{$src})) { |
|
| if ($_) { |
|
| $adde= |
|
| ' <a href="/adm/email?display='. |
|
| &Apache::lonnet::escape($_). |
|
| '"><img src="/adm/lonMisc/bomb.gif" border=0></a>' |
|
| .$adde; |
|
| } |
|
| } |
|
| } |
|
| if ($feedback{$src}) { |
|
| foreach (split(/\,/,$feedback{$src})) { |
|
| if ($_) { |
|
| $adde= |
|
| ' <a href="/adm/email?display='. |
|
| &Apache::lonnet::escape($_). |
|
| '"><img src="/adm/lonMisc/feedback.gif" border=0></a>' |
|
| .$adde; |
|
| } |
|
| } |
|
| } |
|
| if ($indent) { |
|
| my $is=" "; |
|
| for(my $i=-1;$i<$indent;$i++) { $indentstr.=$is; } |
|
| } |
|
| if (!$linkid) { $linkid=$rid; } |
|
| if ($hash{'randomout_'.$rid}) { |
|
| $adde=' <i>(hidden)</i>'.$adde; |
|
| } |
|
| $r->print($add.$indentstr); |
|
| if ($rid) { |
|
| $r->print('<a href="'.$hash{'src_'.$linkid}. |
|
| (($hash{'src_'.$linkid}=~/\?/)?'&':'?'). |
|
| 'symb='.&Apache::lonnet::escape($symb) |
|
| .'">'. |
|
| $hwk.$hash{'title_'.$rid}.$hwke.'</a>'); |
|
| } |
|
| $r->print($adde); |
|
| } |
|
| $r->print('</tr>'); |
|
| } |
|
| } |
|
| $r->print("\n</table>"); |
|
| $r->print('</body></html>'); |
|
| # -------------------------------------------------------------------- End page |
|
| } |
|
| # ------------------------------------------------------------- End render page |
|
| } |
|
| # ------------------------------------------------------------------ Untie hash |
|
| unless (untie(%hash)) { |
|
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
| "Could not untie coursemap $fn (browse).</font>"); |
|
| } |
|
| unless (untie(%parmhash)) { |
|
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
| "Could not untie parmhash (browse).</font>"); |
|
| } |
|
| return OK; |
|
| } |
|
| |
|
| sub new_handle { |
=head2 Parameters |
| my $r = shift; |
|
| |
|
| # Handle header-only request |
Most of these parameters are only useful if you are *not* using the folder interface (i.e., the default first column), which is probably the common case. If you are using this interface, then you should be able to get away with just using 'cols' (to specify the columns shown), 'url' (necessary for the folders to link to the current screen correctly), and possibly 'queryString' if your app calls for it. In that case, maintaining the state of the folders will be done automatically. |
| if ($r->header_only) { |
|
| if ($ENV{'browser.mathml'}) { |
|
| $r->content_type('text/xml'); |
|
| } else { |
|
| $r->content_type('text/html'); |
|
| } |
|
| $r->send_http_header; |
|
| return OK; |
|
| } |
|
| |
|
| # Send header, don't cache this page |
=over 4 |
| if ($ENV{'browser.mathml'}) { |
|
| $r->content_type('text/xml'); |
|
| } else { |
|
| $r->content_type('text/html'); |
|
| } |
|
| &Apache::loncommon::no_cache($r); |
|
| $r->send_http_header; |
|
| |
|
| # Header |
=item * B<iterator>: 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. |
| $r->print(&Apache::loncommon::bodytag('Navigate Course Map','', |
|
| '')); |
|
| # Initialize the nav map |
|
| my $navmap = Apache::lonnavmaps::navmap->new( |
|
| $ENV{"request.course.fn"}.".db", |
|
| $ENV{"request.course.fn"}."_parms.db", 1); |
|
| |
|
| # Grab a resource object so we have access to the constants; this |
=item * B<iterator_map>: 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'. |
| # is technically not proper, but should be harmless |
|
| my $res = $navmap->firstResource(); |
|
| |
|
| # Defines a status->color mapping, null string means don't color |
|
| my %colormap = |
|
| ( $res->NETWORK_FAILURE => '', |
|
| $res->CORRECT => '#BBFFBB', |
|
| $res->EXCUSED => '#BBBBFF', |
|
| $res->PAST_DUE_ANSWER_LATER => '#FFAA00', |
|
| $res->PAST_DUE_NO_ANSWER => '#FFAA00', |
|
| $res->ANSWER_OPEN => '#FF00AA', |
|
| $res->OPEN_LATER => '', |
|
| $res->TRIES_LEFT => '#FFFF00', |
|
| $res->INCORRECT => '#FFAA00', |
|
| $res->OPEN => '#FFFF88', |
|
| $res->NOTHING_SET => '' ); |
|
| |
|
| if (!defined($navmap)) { |
=item * B<navmap>: 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. |
| my $requrl = $r->uri; |
|
| $ENV{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized"; |
=item * B<cols>: An array reference |
| return HTTP_NOT_ACCEPTABLE; |
|
| |
=item * B<showParts>: 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. |
| |
|
| |
=item * B<condenseParts>: 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<jumpCount>: 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. By default, determined through the use of the ENV{} 'jump' information, and should normally "just work" correctly. |
| |
|
| |
=item * B<here>: A Symb identifying where to place the 'here' marker. Default empty, which means no marker. |
| |
|
| |
=item * B<indentString>: A string identifying the indentation string to use. By default, this is a 25 pixel whitespace image with no alt text. |
| |
|
| |
=item * B<queryString>: A string which will be prepended to the query string used when the folders are opened or closed. |
| |
|
| |
=item * B<url>: The url the folders will link to, which should be the current page. Required if the resource info column is shown. |
| |
|
| |
=item * B<currentJumpIndex>: 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<r>: 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<printKey>: If true, print the key that appears on the top of the standard navmaps. Default is false. |
| |
|
| |
=item * B<printCloseAll>: If true, print the "Close all folders" or "open all folders" links. Default is true. |
| |
|
| |
=item * B<filterFunc>: 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. By default, all resources are shown. |
| |
|
| |
=item * B<suppressNavmaps>: If true, will not display Navigate Content resources. Default to false. |
| |
|
| |
=back |
| |
|
| |
=head2 Additional Info |
| |
|
| |
In addition to the parameters you can pass to the renderer, which will be passed through unchange to the column renderers, the renderer will generate the following information which your renderer may find useful: |
| |
|
| |
If you want to know how many rows were printed, the 'counter' element of the hash passed into the render function will contain the count. You may want to check whether any resources were printed at all. |
| |
|
| |
=over 4 |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub resource { return 0; } |
| |
sub communication_status { return 1; } |
| |
sub quick_status { return 2; } |
| |
sub long_status { return 3; } |
| |
|
| |
# Data for render_resource |
| |
|
| |
sub render_resource { |
| |
my ($resource, $part, $params) = @_; |
| |
|
| |
my $nonLinkedText = ''; # stuff after resource title not in link |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
my $src = $resource->src(); |
| |
my $it = $params->{"iterator"}; |
| |
my $filter = $it->{FILTER}; |
| |
|
| |
my $title = $resource->compTitle(); |
| |
if ($src =~ /^\/uploaded\//) { |
| |
$nonLinkedText=$title; |
| |
$title = ''; |
| |
} |
| |
my $partLabel = ""; |
| |
my $newBranchText = ""; |
| |
|
| |
# If this is a new branch, label it so |
| |
if ($params->{'isNewBranch'}) { |
| |
$newBranchText = "<img src='/adm/lonIcons/branch.gif' border='0' />"; |
| } |
} |
| |
|
| my %filterHash; |
# links to open and close the folder |
| # Figure out what we're not displaying |
my $linkopen = "<a href='$link'>"; |
| foreach (split(/\,/, $ENV{"form.filter"})) { |
my $linkclose = "</a>"; |
| if ($_) { |
|
| $filterHash{$_} = "1"; |
# Default icon: HTML page |
| |
my $icon = "<img src='/adm/lonIcons/html.gif' alt='' border='0' />"; |
| |
|
| |
if ($resource->is_problem()) { |
| |
if ($part eq "" || $params->{'condensed'}) { |
| |
$icon = '<img src="/adm/lonIcons/problem.gif" alt="" border="0" />'; |
| |
} else { |
| |
$icon = $params->{'indentString'}; |
| } |
} |
| } |
} |
| |
|
| # Begin the HTML table |
# Display the correct map icon to open or shut map |
| # two columns: the title/icon on the left, the info on the right |
if ($resource->is_map()) { |
| $r->print('<table cellspacing="3" cellpadding="0" bgcolor="#FFFFFF">' ."\n"); |
my $mapId = $resource->map_pc(); |
| |
my $nowOpen = !defined($filter->{$mapId}); |
| |
if ($it->{CONDITION}) { |
| |
$nowOpen = !$nowOpen; |
| |
} |
| |
|
| |
if (!$params->{'resource_no_folder_link'}) { |
| |
$icon = 'navmap.folder.' . ($nowOpen ? 'closed' : 'open') . '.gif'; |
| |
$icon = "<img src='/adm/lonIcons/$icon' alt='' border='0' />"; |
| |
|
| |
$linkopen = "<a href='" . $params->{'url'} . '?' . |
| |
$params->{'queryString'} . '&filter='; |
| |
$linkopen .= ($nowOpen xor $it->{CONDITION}) ? |
| |
addToFilter($filter, $mapId) : |
| |
removeFromFilter($filter, $mapId); |
| |
$linkopen .= "&condition=" . $it->{CONDITION} . '&hereType=' |
| |
. $params->{'hereType'} . '&here=' . |
| |
&Apache::lonnet::escape($params->{'here'}) . |
| |
'&jump=' . |
| |
&Apache::lonnet::escape($resource->symb()) . |
| |
"&folderManip=1'>"; |
| |
} else { |
| |
# Don't allow users to manipulate folder |
| |
$icon = 'navmap.folder.' . ($nowOpen ? 'closed' : 'open') . |
| |
'.nomanip.gif'; |
| |
$icon = "<img src='/adm/lonIcons/$icon' alt='' border='0' />"; |
| |
|
| my $mapIterator = $navmap->getIterator(undef, undef, \%filterHash); |
$linkopen = ""; |
| my $curRes = $mapIterator->next(); |
$linkclose = ""; |
| undef $res; # so we don't accidentally use it later |
} |
| my $indentLevel = -1; |
} |
| my $indentString = " "; |
|
| |
|
| my $isNewBranch = 0; |
|
| |
|
| while ($curRes != $mapIterator->END_NAV_MAP) { |
|
| if ($curRes == $mapIterator->BEGIN_MAP() || |
|
| $curRes == $mapIterator->BEGIN_BRANCH()) { |
|
| $indentLevel++; |
|
| } |
|
| if ($curRes == $mapIterator->END_MAP() || |
|
| $curRes == $mapIterator->END_BRANCH()) { |
|
| $indentLevel--; |
|
| } |
|
| if ($curRes == $mapIterator->BEGIN_BRANCH()) { |
|
| $isNewBranch = 1; |
|
| } |
|
| |
|
| if (ref($curRes) && $curRes->src()) { |
|
| |
|
| my @parts; |
|
| if ($curRes->is_problem()) { |
|
| @parts = @{$curRes->parts()}; |
|
| if (scalar(@parts) > 1) { shift(@parts); } |
|
| } 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 |
|
| } |
|
| |
|
| foreach my $part (@parts) { |
if ($resource->randomout()) { |
| |
$nonLinkedText .= ' <i>(hidden)</i> '; |
| # For each thing we're displaying... |
} |
| |
|
| |
# We're done preparing and finally ready to start the rendering |
| |
my $result = "<td align='left' valign='center'>"; |
| |
|
| my $stack = $mapIterator->getStack(); |
my $indentLevel = $params->{'indentLevel'}; |
| my $src = getLinkForResource($stack); |
if ($newBranchText) { $indentLevel--; } |
| |
|
| my $srcHasQuestion = $src =~ /\?/; |
# print indentation |
| my $link = $src. |
for (my $i = 0; $i < $indentLevel; $i++) { |
| ($srcHasQuestion?'&':'?') . |
$result .= $params->{'indentString'}; |
| 'symb='.&Apache::lonnet::escape($curRes->symb()). |
} |
| '"'; |
|
| my $title = $curRes->title(); |
|
| my $partLabel = ""; |
|
| my $newBranchText = ""; |
|
| |
|
| # If this is a new branch, label it so |
|
| # (temporary, this should be an icon w/ alt text) |
|
| if ($isNewBranch) { |
|
| $newBranchText = "NB -> "; |
|
| $isNewBranch = 0; |
|
| } |
|
| |
|
| # links to open and close the folders |
# Decide what to display |
| my $linkopen = "<a href=\"$link\">"; |
$result .= "$newBranchText$linkopen$icon$linkclose"; |
| my $linkclose = "</a>"; |
|
| |
my $curMarkerBegin = ''; |
| my $icon = "html.gif"; |
my $curMarkerEnd = ''; |
| if ($curRes->is_problem()) { |
|
| $icon = "problem.gif"; |
|
| } |
|
| |
|
| # Display the correct icon, link to open or shut map |
# Is this the current resource? |
| if ($curRes->is_map()) { |
if (!$params->{'displayedHereMarker'} && |
| my $mapId = $curRes->map_pc(); |
$resource->symb() eq $params->{'here'} ) { |
| my $nowOpen = !defined($filterHash{$mapId}); |
$curMarkerBegin = '<font color="red" size="+2">> </font>'; |
| $icon = $nowOpen ? |
$curMarkerEnd = '<font color="red" size="+2"><</font>'; |
| "folder_opened.gif" : "folder_closed.gif"; |
$params->{'displayedHereMarker'} = 1; |
| $linkopen = "<a href=\"/adm/navmaps?filter="; |
} |
| $linkopen .= $nowOpen ? |
|
| addToFilter(\%filterHash, $mapId) : |
|
| removeFromFilter(\%filterHash, $mapId); |
|
| $linkopen .= "\">"; |
|
| $linkclose = "</a>"; |
|
| |
|
| } |
|
| |
|
| my $colorizer = ""; |
|
| if ($curRes->is_problem()) { |
|
| my $status = $curRes->status($part); |
|
| my $color = $colormap{$status}; |
|
| if ($color ne "") { |
|
| $colorizer = "bgcolor=\"$color\""; |
|
| } |
|
| } |
|
| |
|
| $r->print(" <tr><td align=\"left\" valign=\"top\">\n"); |
if ($resource->is_problem() && $part ne "" && |
| |
!$params->{'condensed'}) { |
| |
$partLabel = " (Part $part)"; |
| |
$title = ""; |
| |
} |
| |
|
| # print indentation |
if ($params->{'multipart'} && $params->{'condensed'}) { |
| for (my $i = 0; $i < $indentLevel; $i++) { |
$nonLinkedText .= ' (' . $resource->countParts() . ' parts)'; |
| $r->print($indentString); |
} |
| } |
|
| |
|
| $r->print(" ${newBranchText}${linkopen}<img border=\"0\" src=\"" . |
if (!$params->{'resource_nolink'}) { |
| "/adm/lonIcons/$icon\" alt=\"\">${linkclose}\n"); |
$result .= " $curMarkerBegin<a href='$link'>$title$partLabel</a>$curMarkerEnd $nonLinkedText</td>"; |
| |
} else { |
| |
$result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText</td>"; |
| |
} |
| |
|
| if ($curRes->is_problem() && $part != "0") { $partLabel = " (Part $part)"; } |
return $result; |
| |
} |
| |
|
| $r->print(" <a href=\"$link\">$title$partLabel</a></td>". |
sub render_communication_status { |
| "<td $colorizer align=\"right\">\n"); |
my ($resource, $part, $params) = @_; |
| |
my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = ""; |
| if ($curRes->kind() eq "res" and |
|
| $curRes->is_problem() ) { |
my $link = $params->{"resourceLink"}; |
| $r->print (getDescription($curRes, $part)); |
my $linkopen = "<a href='$link'>"; |
| } |
my $linkclose = "</a>"; |
| |
|
| |
if ($resource->hasDiscussion()) { |
| |
$discussionHTML = $linkopen . |
| |
'<img border="0" src="/adm/lonMisc/chat.gif" />' . |
| |
$linkclose; |
| |
} |
| |
|
| |
if ($resource->getFeedback()) { |
| |
my $feedback = $resource->getFeedback(); |
| |
foreach (split(/\,/, $feedback)) { |
| |
if ($_) { |
| |
$feedbackHTML .= ' <a href="/adm/email?display=' |
| |
. &Apache::lonnet::escape($_) . '">' |
| |
. '<img src="/adm/lonMisc/feedback.gif" ' |
| |
. 'border="0" /></a>'; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ($resource->getErrors()) { |
| |
my $errors = $resource->getErrors(); |
| |
foreach (split(/,/, $errors)) { |
| |
if ($_) { |
| |
$errorHTML .= ' <a href="/adm/email?display=' |
| |
. &Apache::lonnet::escape($_) . '">' |
| |
. '<img src="/adm/lonMisc/bomb.gif" ' |
| |
. 'border="0" /></a>'; |
| } |
} |
| } |
} |
| $curRes = $mapIterator->next(); |
|
| } |
} |
| |
|
| $r->print("</table></body></html>"); |
return "<td width=\"75\" align=\"left\" valign=\"center\">$discussionHTML$feedbackHTML$errorHTML </td>"; |
| |
|
| return OK; |
|
| } |
} |
| |
sub render_quick_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $result = ""; |
| |
my $firstDisplayed = !$params->{'condensed'} && |
| |
$params->{'multipart'} && $part eq "0"; |
| |
|
| # Convenience functions: Returns a string that adds or subtracts |
my $link = $params->{"resourceLink"}; |
| # the second argument from the first hash, appropriate for the |
my $linkopen = "<a href='$link'>"; |
| # query string that determines which folders to recurse on |
my $linkclose = "</a>"; |
| sub addToFilter { |
|
| my $hashIn = shift; |
|
| my $addition = shift; |
|
| my %hash = %$hashIn; |
|
| $hash{$addition} = 1; |
|
| |
|
| return join (",", keys(%hash)); |
if ($resource->is_problem() && |
| |
!$firstDisplayed) { |
| |
my $icon = $statusIconMap{$resource->status($part)}; |
| |
my $alt = $iconAltTags{$icon}; |
| |
if ($icon) { |
| |
$result .= "<td width='30' valign='center' width='50' align='right'>$linkopen<img width='25' height='25' src='/adm/lonIcons/$icon' border='0' alt='$alt' />$linkclose</td>\n"; |
| |
} else { |
| |
$result .= "<td width='30'> </td>\n"; |
| |
} |
| |
} else { # not problem, no icon |
| |
$result .= "<td width='30'> </td>\n"; |
| |
} |
| |
|
| |
return $result; |
| |
} |
| |
sub render_long_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $result = "<td align='right' valign='center'>\n"; |
| |
my $firstDisplayed = !$params->{'condensed'} && |
| |
$params->{'multipart'} && $part eq "0"; |
| |
|
| |
my $color; |
| |
if ($resource->is_problem()) { |
| |
$color = $colormap{$resource->status}; |
| |
|
| |
if (dueInLessThen24Hours($resource, $part) || |
| |
lastTry($resource, $part)) { |
| |
$color = $hurryUpColor; |
| |
} |
| |
} |
| |
|
| |
if ($resource->kind() eq "res" && |
| |
$resource->is_problem() && |
| |
!$firstDisplayed) { |
| |
if ($color) {$result .= "<font color=\"$color\"><b>"; } |
| |
$result .= getDescription($resource, $part); |
| |
if ($color) {$result .= "</b></font>"; } |
| |
} |
| |
if ($resource->is_map() && advancedUser() && $resource->randompick()) { |
| |
$result .= '(randomly select ' . $resource->randompick() .')'; |
| |
} |
| |
|
| |
$result .= " </td>\n"; |
| |
|
| |
return $result; |
| } |
} |
| |
|
| sub removeFromFilter { |
my @preparedColumns = (\&render_resource, \&render_communication_status, |
| my $hashIn = shift; |
\&render_quick_status, \&render_long_status); |
| my $subtraction = shift; |
|
| my %hash = %$hashIn; |
|
| |
|
| delete $hash{$subtraction}; |
sub setDefault { |
| return join(",", keys(%hash)); |
my ($val, $default) = @_; |
| |
if (!defined($val)) { return $default; } |
| |
return $val; |
| } |
} |
| |
|
| # Convenience function: Given a stack returned from getStack on the iterator, |
sub render { |
| # return the correct src() value. |
my $args = shift; |
| # Later, this should add an anchor when we start putting anchors in pages. |
&Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING}); |
| sub getLinkForResource { |
my $result = ''; |
| my $stack = shift; |
|
| my $res; |
|
| |
|
| # Check to see if there are any pages in the stack |
# Configure the renderer. |
| foreach $res (@$stack) { |
my $cols = $args->{'cols'}; |
| if (defined($res) && $res->is_page()) { |
if (!defined($cols)) { |
| return $res->src(); |
# 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 $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"; |
| } |
} |
| } |
} |
| |
|
| # Failing that, return the src of the last resource that is defined |
my $condition = 0; |
| # (when we first recurse on a map, it puts an undefined resource |
if ($ENV{'form.condition'}) { |
| # on the bottom because $self->{HERE} isn't defined yet, and we |
$condition = 1; |
| # want the src for the map anyhow) |
|
| foreach (@$stack) { |
|
| if (defined($_)) { $res = $_; } |
|
| } |
} |
| |
|
| return $res->src(); |
if (!$ENV{'form.folderManip'} && !defined($args->{'iterator'})) { |
| } |
# Step 1: Check to see if we have a navmap |
| |
if (!defined($navmap)) { |
| |
$navmap = Apache::lonnavmaps::navmap->new( |
| |
$ENV{"request.course.fn"}.".db", |
| |
$ENV{"request.course.fn"}."_parms.db", 1, 1); |
| |
$mustCloseNavMap = 1; |
| |
} |
| |
$navmap->init(); |
| |
|
| # Convenience function: This seperates the logic of how to create |
# Step two: Locate what kind of here marker is necessary |
| # the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned", |
# Determine where the "here" marker is and where the screen jumps to. |
| # etc.) into a seperate function. It takes a resource object as the |
|
| # first parameter, and the part number of the resource as the second. |
|
| # It's basically a big switch statement on the status of the resource. |
|
| |
|
| sub getDescription { |
if ($ENV{'form.symb'}) { |
| my $res = shift; |
$here = $jump = $ENV{'form.symb'}; |
| my $part = shift; |
} elsif ($ENV{'form.postdata'}) { |
| my $status = $res->getDateStatus(); |
# 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); |
| |
} |
| |
|
| |
# Step three: Ensure the folders are open |
| |
my $mapIterator = $navmap->getIterator(undef, undef, undef, 1); |
| |
my $depth = 1; |
| |
$mapIterator->next(); # discard the first BEGIN_MAP |
| |
my $curRes = $mapIterator->next(); |
| |
my $found = 0; |
| |
|
| |
# We only need to do this if we need to open the maps to show the |
| |
# current position. This will change the counter so we can't count |
| |
# for the jump marker with this loop. |
| |
while ($depth > 0 && !$found) { |
| |
if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $mapIterator->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($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; |
| |
} |
| |
|
| |
$curRes = $mapIterator->next(); |
| |
} |
| |
} |
| |
|
| |
if ( !defined($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)) { |
| |
# 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( |
| |
$ENV{"request.course.fn"}.".db", |
| |
$ENV{"request.course.fn"}."_parms.db", 1, 1); |
| |
$mustCloseNavMap = 1; |
| |
} |
| |
# Paranoia: Make sure it's ready |
| |
$navmap->init(); |
| |
|
| if ($status == $res->NETWORK_FAILURE) { return ""; } |
# See if we're being passed a specific map |
| if ($status == $res->NOTHING_SET) { |
if ($args->{'iterator_map'}) { |
| return "Not currently assigned."; |
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, $condition); |
| |
} |
| } |
} |
| if ($status == $res->OPEN_LATER) { |
|
| return "Opens: " . timeToHumanString($res->opendate($part)); |
# (re-)Locate the jump point, if any |
| |
my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0); |
| |
my $depth = 1; |
| |
$mapIterator->next(); |
| |
my $curRes = $mapIterator->next(); |
| |
my $foundJump = 0; |
| |
my $counter = 0; |
| |
|
| |
while ($depth > 0 && !$foundJump) { |
| |
if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $mapIterator->END_MAP()) { $depth--; } |
| |
if (ref($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; |
| |
} |
| |
|
| |
$curRes = $mapIterator->next(); |
| } |
} |
| if ($status == $res->OPEN) { |
|
| return "Due: $status " . timeToHumanString($res->duedate($part)); |
my $showParts = setDefault($args->{'showParts'}, 1); |
| |
my $condenseParts = setDefault($args->{'condenseParts'}, 1); |
| |
# 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 $printKey = $args->{'printKey'}; |
| |
my $printCloseAll = $args->{'printCloseAll'}; |
| |
if (!defined($printCloseAll)) { $printCloseAll = 1; } |
| |
my $filterFunc = setDefault($args->{'filterFunc'}, |
| |
sub {return 1;}); |
| |
|
| |
# Print key? |
| |
if ($printKey) { |
| |
$result .= '<table border="0" cellpadding="2" cellspacing="0">'; |
| |
my $date=localtime; |
| |
$result.='<tr><td align="right" valign="bottom">Key: </td>'; |
| |
if ($navmap->{LAST_CHECK}) { |
| |
$result .= |
| |
'<img src="/adm/lonMisc/chat.gif"> New discussion since '. |
| |
strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})). |
| |
'</td><td align="center" valign="bottom"> '. |
| |
'<img src="/adm/lonMisc/feedback.gif"> New message (click to open)<p>'. |
| |
'</td>'; |
| |
} else { |
| |
$result .= '<td align="center" valign="bottom"> '. |
| |
'<img src="/adm/lonMisc/chat.gif"> Discussions</td><td align="center" valign="bottom">'. |
| |
' <img src="/adm/lonMisc/feedback.gif"> New message (click to open)'. |
| |
'</td>'; |
| |
} |
| |
|
| |
$result .= '</tr></table>'; |
| } |
} |
| if ($status == $res->PAST_DUE_ANSWER_LATER) { |
|
| return "Answer: " . timeToHumanString($res->answerdate($part)); |
if ($printCloseAll) { |
| |
if ($condition) { |
| |
$result.="<a href=\"navmaps?condition=0&filter=&$queryString" . |
| |
"&here=" . Apache::lonnet::escape($here) . |
| |
"\">Close All Folders</a>"; |
| |
} else { |
| |
$result.="<a href=\"navmaps?condition=1&filter=&$queryString" . |
| |
"&here=" . Apache::lonnet::escape($here) . |
| |
"\">Open All Folders</a>"; |
| |
} |
| |
$result .= "<br /><br />\n"; |
| |
} |
| |
|
| |
if ($r) { |
| |
$r->print($result); |
| |
$r->rflush(); |
| |
$result = ""; |
| |
} |
| |
# End parameter setting |
| |
|
| |
# Data |
| |
$result .= '<table cellspacing="0" cellpadding="3" border="0" bgcolor="#FFFFFF">' ."\n"; |
| |
my $res = "Apache::lonnavmaps::resource"; |
| |
my %condenseStatuses = |
| |
( $res->NETWORK_FAILURE => 1, |
| |
$res->NOTHING_SET => 1, |
| |
$res->CORRECT => 1 ); |
| |
my @backgroundColors = ("#FFFFFF", "#F6F6F6"); |
| |
|
| |
# Shared variables |
| |
$args->{'counter'} = 0; # counts the rows |
| |
$args->{'indentLevel'} = 0; |
| |
$args->{'isNewBranch'} = 0; |
| |
$args->{'condensed'} = 0; |
| |
$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />"); |
| |
$args->{'displayedHereMarker'} = 0; |
| |
|
| |
my $displayedJumpMarker = 0; |
| |
# Set up iteration. |
| |
$depth = 1; |
| |
$it->next(); # discard initial BEGIN_MAP |
| |
$curRes = $it->next(); |
| |
my $now = time(); |
| |
my $in24Hours = $now + 24 * 60 * 60; |
| |
my $rownum = 0; |
| |
|
| |
# export "here" marker information |
| |
$args->{'here'} = $here; |
| |
|
| |
while ($depth > 0) { |
| |
if ($curRes == $it->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $it->END_MAP()) { $depth--; } |
| |
|
| |
# Maintain indentation level. |
| |
if ($curRes == $it->BEGIN_MAP() || |
| |
$curRes == $it->BEGIN_BRANCH() ) { |
| |
$args->{'indentLevel'}++; |
| |
} |
| |
if ($curRes == $it->END_MAP() || |
| |
$curRes == $it->END_BRANCH() ) { |
| |
$args->{'indentLevel'}--; |
| |
} |
| |
# Notice new branches |
| |
if ($curRes == $it->BEGIN_BRANCH()) { |
| |
$args->{'isNewBranch'} = 1; |
| |
} |
| |
|
| |
# If this isn't an actual resource, continue on |
| |
if (!ref($curRes)) { |
| |
next; |
| |
} |
| |
|
| |
$args->{'counter'}++; |
| |
|
| |
# If this has been filtered out, continue on |
| |
if (!(&$filterFunc($curRes))) { |
| |
$args->{'isNewBranch'} = 0; # Don't falsely remember this |
| |
next; |
| |
} |
| |
|
| |
# If we're suppressing navmaps and this is a navmap, continue on |
| |
if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) { |
| |
next; |
| |
} |
| |
|
| |
# Does it have multiple parts? |
| |
$args->{'multipart'} = 0; |
| |
$args->{'condensed'} = 0; |
| |
my @parts; |
| |
|
| |
# Decide what parts to show. |
| |
if ($curRes->is_problem() && $showParts) { |
| |
@parts = @{$curRes->parts()}; |
| |
$args->{'multipart'} = scalar(@parts) > 1; |
| |
|
| |
if ($condenseParts) { # do the condensation |
| |
if (!$curRes->opendate("0")) { |
| |
@parts = ("0"); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
if (!$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 $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]); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
|
| |
} |
| |
} |
| |
} |
| |
|
| |
# If the multipart problem was condensed, "forget" it was multipart |
| |
if (scalar(@parts) == 1) { |
| |
$args->{'multipart'} = 0; |
| |
} |
| |
|
| |
# Now, we've decided what parts to show. Loop through them and |
| |
# show them. |
| |
foreach my $part ('', @parts) { |
| |
if ($part eq '0') { |
| |
next; |
| |
} |
| |
$rownum ++; |
| |
my $backgroundColor = $backgroundColors[$rownum % scalar(@backgroundColors)]; |
| |
|
| |
$result .= " <tr bgcolor='$backgroundColor'>\n"; |
| |
|
| |
# 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 $srcHasQuestion = $src =~ /\?/; |
| |
$args->{"resourceLink"} = $src. |
| |
($srcHasQuestion?'&':'?') . |
| |
'symb=' . &Apache::lonnet::escape($curRes->symb()); |
| |
|
| |
# Now, display each column. |
| |
foreach my $col (@$cols) { |
| |
my $colHTML = ''; |
| |
if (ref($col)) { |
| |
$colHTML .= &$col($curRes, $part, $args); |
| |
} else { |
| |
$colHTML .= &{$preparedColumns[$col]}($curRes, $part, $args); |
| |
} |
| |
|
| |
# If this is the first column and it's time to print |
| |
# the anchor, do so |
| |
if ($col == $cols->[0] && |
| |
$args->{'counter'} == $args->{'currentJumpIndex'} - |
| |
$currentJumpDelta) { |
| |
# Jam the anchor after the <td> tag; |
| |
# necessary for valid HTML (which Mozilla requires) |
| |
$colHTML =~ s/\>/\>\<a name="curloc" \/\>/; |
| |
$displayedJumpMarker = 1; |
| |
} |
| |
$result .= $colHTML . "\n"; |
| |
} |
| |
$result .= " </tr>\n"; |
| |
$args->{'isNewBranch'} = 0; |
| |
} |
| |
|
| |
if ($r && $rownum % 20 == 0) { |
| |
$r->print($result); |
| |
$result = ""; |
| |
$r->rflush(); |
| |
} |
| |
} continue { |
| |
$curRes = $it->next(); |
| } |
} |
| if ($status == $res->PAST_DUE_NO_ANSWER) { |
|
| return "Was Due: " . timeToHumanString($res->duedate($part)); |
# Print out the part that jumps to #curloc if it exists |
| |
# delay needed because the browser is processing the jump before |
| |
# it finishes rendering, so it goes to the wrong place! |
| |
# onload might be better, but this routine has no access to that. |
| |
# On mozilla, the 0-millisecond timeout seems to prevent this; |
| |
# it's quite likely this might fix other browsers, too, and |
| |
# certainly won't hurt anything. |
| |
if ($displayedJumpMarker) { |
| |
$result .= "<script>setTimeout(\"location += '#curloc';\", 0)</script>\n"; |
| } |
} |
| if ($status == $res->ANSWER_OPEN) { |
|
| return "Answer available"; |
$result .= "</table>"; |
| |
|
| |
if ($r) { |
| |
$r->print($result); |
| |
$result = ""; |
| |
$r->rflush(); |
| } |
} |
| } |
|
| |
if ($mustCloseNavMap) { $navmap->untieHashes(); } |
| |
|
| # I want to change this into something more human-friendly. For |
return $result; |
| # now, this is a simple call to localtime. The final function |
|
| # probably belongs in loncommon. |
|
| sub timeToHumanString { |
|
| return localtime(shift); |
|
| } |
} |
| |
|
| 1; |
1; |
| |
|
| package Apache::lonnavmaps::navmap; |
package Apache::lonnavmaps::navmap; |
| |
|
| # LEFT: |
|
| # * Actual handler code (multi-part) |
|
| # * Branches (aieee!) (and conditionals) |
|
| |
|
| =pod |
=pod |
| |
|
| lonnavmaps provides functions and objects for dealing with the compiled course hashes generated when a user enters the course, and also provides the Apache handler for the "Navigation Map" button. |
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 navmap object: Encapsulating the compiled nav map |
=head1 navmap object: Encapsulating the compiled nav map |
| |
|
|
Line 1090 You must obtain resource objects through
|
Line 1251 You must obtain resource objects through
|
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * B<new>(filename, parmHashFile, genCourseAndUserOptions): Binds a new navmap object to the compiled course representation and parmHashFile. 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. Returns the navmap object if this is successful, or B<undef> if not. You must check for undef; errors will occur when you try to use the other methods otherwise. |
=item * B<new>(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<undef> if not. You must check for undef; errors will occur when you try to use the other methods otherwise. |
| |
|
| =item * B<getIterator>(first, finish, filter, condition): See iterator documentation below. |
=item * B<getIterator>(first, finish, filter, condition): See iterator documentation below. |
| |
|
|
Line 1108 sub new {
|
Line 1269 sub new {
|
| $self->{NAV_HASH_FILE} = shift; |
$self->{NAV_HASH_FILE} = shift; |
| $self->{PARM_HASH_FILE} = shift; |
$self->{PARM_HASH_FILE} = shift; |
| $self->{GENERATE_COURSE_USER_OPT} = shift; |
$self->{GENERATE_COURSE_USER_OPT} = shift; |
| |
$self->{GENERATE_EMAIL_DISCUSS_STATUS} = shift; |
| |
|
| # Resource cache stores navmapresource's as we reference them. We generate |
# 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. |
# them on-demand so we don't pay for creating resources unless we use them. |
| $self->{RESOURCE_CACHE} = {}; |
$self->{RESOURCE_CACHE} = {}; |
| |
|
|
Line 1118 sub new {
|
Line 1280 sub new {
|
| $self->{NETWORK_FAILURE} = 0; |
$self->{NETWORK_FAILURE} = 0; |
| |
|
| # tie the nav hash |
# tie the nav hash |
| my %navmaphash; |
|
| if (!(tie(%navmaphash, 'GDBM_File', $self->{NAV_HASH_FILE}, |
if (!(tie(%navmaphash, 'GDBM_File', $self->{NAV_HASH_FILE}, |
| &GDBM_READER(), 0640))) { |
&GDBM_READER(), 0640))) { |
| return undef; |
return undef; |
| } |
} |
| $self->{NAV_HASH} = \%navmaphash; |
|
| |
|
| my %parmhash; |
|
| if (!(tie(%parmhash, 'GDBM_File', $self->{PARM_HASH_FILE}, |
if (!(tie(%parmhash, 'GDBM_File', $self->{PARM_HASH_FILE}, |
| &GDBM_READER(), 0640))) |
&GDBM_READER(), 0640))) |
| { |
{ |
| |
untie $self->{PARM_HASH}; |
| return undef; |
return undef; |
| } |
} |
| $self->{PARM_HASH} = \%parmhash; |
|
| $self->{HASH_TIED} = 1; |
$self->{HASH_TIED} = 1; |
| |
$self->{NAV_HASH} = \%navmaphash; |
| |
$self->{PARM_HASH} = \%parmhash; |
| |
$self->{INITED} = 0; |
| |
|
| |
bless($self); |
| |
|
| |
return $self; |
| |
} |
| |
|
| |
sub init { |
| |
my $self = shift; |
| |
if ($self->{INITED}) { return; } |
| |
|
| # If the course opt hash and the user opt hash should be generated, |
# If the course opt hash and the user opt hash should be generated, |
| # generate them |
# generate them |
|
Line 1146 sub new {
|
Line 1319 sub new {
|
| |
|
| my $userprefix=$uname.'_'.$udom.'_'; |
my $userprefix=$uname.'_'.$udom.'_'; |
| |
|
| my %courserdatas; my %useropt; my %courseopt; |
my %courserdatas; my %useropt; my %courseopt; my %userrdatas; |
| unless ($uhome eq 'no_host') { |
unless ($uhome eq 'no_host') { |
| # ------------------------------------------------- Get coursedata (if present) |
# ------------------------------------------------- Get coursedata (if present) |
| unless ((time-$courserdatas{$cid.'.last_cache'})<240) { |
unless ((time-$courserdatas{$cid.'.last_cache'})<240) { |
|
Line 1185 sub new {
|
Line 1358 sub new {
|
| $useropt{$userprefix.&Apache::lonnet::unescape($name)}= |
$useropt{$userprefix.&Apache::lonnet::unescape($name)}= |
| &Apache::lonnet::unescape($value); |
&Apache::lonnet::unescape($value); |
| } |
} |
| $self->{COURSE_OPT} = \%courseopt; |
$self->{COURSE_OPT} = \%courseopt; |
| $self->{USER_OPT} = \%useropt; |
$self->{USER_OPT} = \%useropt; |
| } |
} |
| } |
} |
| |
|
| bless($self); |
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; |
| |
|
| |
} |
| |
|
| return $self; |
$self->{PARM_CACHE} = {}; |
| |
$self->{INITED} = 1; |
| |
} |
| |
|
| |
# Internal function: Takes a key to look up in the nav hash and implements internal |
| |
# memory caching of that key. |
| |
sub navhash { |
| |
my $self = shift; my $key = shift; |
| |
return $self->{NAV_HASH}->{$key}; |
| |
} |
| |
|
| |
# Checks to see if coursemap is defined, matching test in old lonnavmaps |
| |
sub courseMapDefined { |
| |
my $self = shift; |
| |
my $uri = &Apache::lonnet::clutter($ENV{'request.course.uri'}); |
| |
|
| |
my $firstres = $self->navhash("map_start_$uri"); |
| |
my $lastres = $self->navhash("map_finish_$uri"); |
| |
return $firstres && $lastres; |
| } |
} |
| |
|
| sub getIterator { |
sub getIterator { |
| my $self = shift; |
my $self = shift; |
| my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift, |
my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift, |
| shift, shift); |
shift, undef, shift); |
| return $iterator; |
return $iterator; |
| } |
} |
| |
|
| # unties the hash when done |
# unties the hash when done |
| sub untieHashes { |
sub untieHashes { |
| my $self = shift; |
my $self = shift; |
| untie $self->{NAV_HASH} if ($self->{HASH_TIED}); |
untie %{$self->{NAV_HASH}} if ($self->{HASH_TIED}); |
| untie $self->{PARM_HASH} if ($self->{HASH_TIED}); |
untie %{$self->{PARM_HASH}} if ($self->{HASH_TIED}); |
| $self->{HASH_TIED} = 0; |
$self->{HASH_TIED} = 0; |
| } |
} |
| |
|
|
Line 1216 sub DESTROY {
|
Line 1452 sub DESTROY {
|
| $self->untieHashes(); |
$self->untieHashes(); |
| } |
} |
| |
|
| |
# Private method: Does the given resource (as a symb string) have |
| |
# current discussion? Returns 0 if chat/mail data not extracted. |
| |
sub hasDiscussion { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
if (!defined($self->{DISCUSSION_TIME})) { return 0; } |
| |
|
| |
#return defined($self->{DISCUSSION_TIME}->{$symb}); |
| |
return $self->{DISCUSSION_TIME}->{$symb} > |
| |
$self->{LAST_CHECK}; |
| |
} |
| |
|
| |
# Private method: Does the given resource (as a symb string) have |
| |
# current feedback? Returns the string in the feedback hash, which |
| |
# will be false if it does not exist. |
| |
sub getFeedback { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
|
| |
if (!defined($self->{FEEDBACK})) { return ""; } |
| |
|
| |
return $self->{FEEDBACK}->{$symb}; |
| |
} |
| |
|
| |
# Private method: Get the errors for that resource (by source). |
| |
sub getErrors { |
| |
my $self = shift; |
| |
my $src = shift; |
| |
|
| |
if (!defined($self->{ERROR_MSG})) { return ""; } |
| |
return $self->{ERROR_MSG}->{$src}; |
| |
} |
| |
|
| =pod |
=pod |
| |
|
| =item * B<getById>(id): Based on the ID of the resource (1.1, 3.2, etc.), get a resource object for that resource. This method, or other methods that use it (as in the resource object) is the only proper way to obtain a resource object. |
=item * B<getById>(id): Based on the ID of the resource (1.1, 3.2, etc.), get a resource object for that resource. This method, or other methods that use it (as in the resource object) is the only proper way to obtain a resource object. |
|
Line 1237 sub getById {
|
Line 1506 sub getById {
|
| } |
} |
| |
|
| # resource handles inserting itself into cache. |
# resource handles inserting itself into cache. |
| return Apache::lonnavmaps::resource->new($self, $id); |
# Not clear why the quotes are necessary, but as of this |
| |
# writing it doesn't work without them. |
| |
return "Apache::lonnavmaps::resource"->new($self, $id); |
| } |
} |
| |
|
| =pod |
=pod |
|
Line 1248 sub getById {
|
Line 1519 sub getById {
|
| |
|
| sub firstResource { |
sub firstResource { |
| my $self = shift; |
my $self = shift; |
| my $firstResource = $self->{NAV_HASH}->{'map_start_' . |
my $firstResource = $self->navhash('map_start_' . |
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
&Apache::lonnet::clutter($ENV{'request.course.uri'})); |
| return $self->getById($firstResource); |
return $self->getById($firstResource); |
| } |
} |
| |
|
|
Line 1261 sub firstResource {
|
Line 1532 sub firstResource {
|
| |
|
| sub finishResource { |
sub finishResource { |
| my $self = shift; |
my $self = shift; |
| my $firstResource = $self->{NAV_HASH}->{'map_finish_' . |
my $firstResource = $self->navhash('map_finish_' . |
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
&Apache::lonnet::clutter($ENV{'request.course.uri'})); |
| return $self->getById($firstResource); |
return $self->getById($firstResource); |
| } |
} |
| |
|
| # -------------------------------------------- Figure out a cascading parameter |
# Parmval reads the parm hash and cascades the lookups. parmval_real does |
| # |
# the actual lookup; parmval caches the results. |
| # For this function to work |
|
| # |
|
| # * parmhash needs to be tied |
|
| # * courseopt and useropt need to be initialized for this user and course |
|
| # |
|
| |
|
| sub parmval { |
sub parmval { |
| my $self = shift; |
my $self = shift; |
| my ($what,$symb)=@_; |
my ($what,$symb)=@_; |
| |
my $hashkey = $what."|||".$symb; |
| |
|
| |
if (defined($self->{PARM_CACHE}->{$hashkey})) { |
| |
return $self->{PARM_CACHE}->{$hashkey}; |
| |
} |
| |
|
| |
my $result = $self->parmval_real($what, $symb); |
| |
$self->{PARM_CACHE}->{$hashkey} = $result; |
| |
return $result; |
| |
} |
| |
|
| |
sub parmval_real { |
| |
my $self = shift; |
| |
my ($what,$symb) = @_; |
| |
|
| my $cid=$ENV{'request.course.id'}; |
my $cid=$ENV{'request.course.id'}; |
| my $csec=$ENV{'request.course.sec'}; |
my $csec=$ENV{'request.course.sec'}; |
| my $uname=$ENV{'user.name'}; |
my $uname=$ENV{'user.name'}; |
|
Line 1310 sub parmval {
|
Line 1590 sub parmval {
|
| |
|
| # ---------------------------------------------------------- first, check user |
# ---------------------------------------------------------- first, check user |
| if ($uname and defined($useropt)) { |
if ($uname and defined($useropt)) { |
| if ($$useropt{$courselevelr}) { return $$useropt{$courselevelr}; } |
if (defined($$useropt{$courselevelr})) { return $$useropt{$courselevelr}; } |
| if ($$useropt{$courselevelm}) { return $$useropt{$courselevelm}; } |
if (defined($$useropt{$courselevelm})) { return $$useropt{$courselevelm}; } |
| if ($$useropt{$courselevel}) { return $$useropt{$courselevel}; } |
if (defined($$useropt{$courselevel})) { return $$useropt{$courselevel}; } |
| } |
} |
| |
|
| # ------------------------------------------------------- second, check course |
# ------------------------------------------------------- second, check course |
| if ($csec and defined($courseopt)) { |
if ($csec and defined($courseopt)) { |
| if ($$courseopt{$seclevelr}) { return $$courseopt{$seclevelr}; } |
if (defined($$courseopt{$seclevelr})) { return $$courseopt{$seclevelr}; } |
| if ($$courseopt{$seclevelm}) { return $$courseopt{$seclevelm}; } |
if (defined($$courseopt{$seclevelm})) { return $$courseopt{$seclevelm}; } |
| if ($$courseopt{$seclevel}) { return $$courseopt{$seclevel}; } |
if (defined($$courseopt{$seclevel})) { return $$courseopt{$seclevel}; } |
| } |
} |
| |
|
| if (defined($courseopt)) { |
if (defined($courseopt)) { |
| if ($$courseopt{$courselevelr}) { return $$courseopt{$courselevelr}; } |
if (defined($$courseopt{$courselevelr})) { return $$courseopt{$courselevelr}; } |
| if ($$courseopt{$courselevelm}) { return $$courseopt{$courselevelm}; } |
if (defined($$courseopt{$courselevelm})) { return $$courseopt{$courselevelm}; } |
| if ($$courseopt{$courselevel}) { return $$courseopt{$courselevel}; } |
if (defined($$courseopt{$courselevel})) { return $$courseopt{$courselevel}; } |
| } |
} |
| |
|
| # ----------------------------------------------------- third, check map parms |
# ----------------------------------------------------- third, check map parms |
| |
|
| my $thisparm=$$parmhash{$symbparm}; |
my $thisparm=$$parmhash{$symbparm}; |
| if ($thisparm) { return $thisparm; } |
if (defined($thisparm)) { return $thisparm; } |
| |
|
| # ----------------------------------------------------- fourth , check default |
# ----------------------------------------------------- fourth , check default |
| |
|
| my $default=&Apache::lonnet::metadata($fn,$rwhat.'.default'); |
my $default=&Apache::lonnet::metadata($fn,$rwhat.'.default'); |
| if ($default) { return $default} |
if (defined($default)) { return $default} |
| |
|
| # --------------------------------------------------- fifth , cascade up parts |
# --------------------------------------------------- fifth , cascade up parts |
| |
|
| my ($space,@qualifier)=split(/\./,$rwhat); |
my ($space,@qualifier)=split(/\./,$rwhat); |
| my $qualifier=join('.',@qualifier); |
my $qualifier=join('.',@qualifier); |
| unless ($space eq '0') { |
unless ($space eq '0') { |
| my ($part,$id)=split(/\_/,$space); |
my @parts=split(/_/,$space); |
| if ($id) { |
my $id=pop(@parts); |
| my $partgeneral=$self->parmval($part.".$qualifier",$symb); |
my $part=join('_',@parts); |
| if ($partgeneral) { return $partgeneral; } |
if ($part eq '') { $part='0'; } |
| } else { |
my $partgeneral=$self->parmval($part.".$qualifier",$symb); |
| my $resourcegeneral=$self->parmval("0.$qualifier",$symb); |
if (defined($partgeneral)) { return $partgeneral; } |
| if ($resourcegeneral) { return $resourcegeneral; } |
|
| } |
|
| } |
} |
| return ''; |
return ''; |
| } |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<getResourceByUrl>(url): Retrieves a resource object by URL of the resource. If passed a resource object, it will simply return it, so it is safe to use this method in code like "$res = $navmap->getResourceByUrl($res)", if you're not sure if $res is already an object, or just a URL. If the resource appears multiple times in the course, only the first instance will be returned. As a result, this is probably useful only for maps. |
| |
|
| |
=item * B<retrieveResources>(map, filterFunc, recursive, bailout): The map is a specification of a map to retreive the resources from, either as a url or as an object. The filterFunc is a reference to a function that takes a resource object as its one argument and returns true if the resource should be included, or false if it should not be. If recursive is true, the map will be recursively examined, otherwise it will not be. If bailout is true, the function will return as soon as it finds a resource, if false it will finish. By default, the map is the top-level map of the course, filterFunc is a function that always returns 1, recursive is true, bailout is false. The resources will be returned in a list reference containing the resource objects for the corresponding resources, with B<no structure information> in the list; regardless of branching, recursion, etc., it will be a flat list. |
| |
|
| |
Thus, this is suitable for cases where you don't want the structure, just a list of all resources. It is also suitable for finding out how many resources match a given description; for this use, if all you want to know is if I<any> resources match the description, the bailout parameter will allow you to avoid potentially expensive enumeration of all matching resources. |
| |
|
| |
=item * B<hasResources>(map, filterFunc, recursive): Convience method for |
| |
|
| |
scalar(retrieveResources($map, $filterFunc, $recursive, 1)) > 0 |
| |
|
| |
which will tell whether the map has resources matching the description in the filter function. |
| |
|
| |
=cut |
| |
|
| |
sub getResourceByUrl { |
| |
my $self = shift; |
| |
my $resUrl = shift; |
| |
|
| |
if (ref($resUrl)) { return $resUrl; } |
| |
|
| |
$resUrl = &Apache::lonnet::clutter($resUrl); |
| |
my $resId = $self->{NAV_HASH}->{'ids_' . $resUrl}; |
| |
if ($resId =~ /,/) { |
| |
$resId = (split (/,/, $resId))[0]; |
| |
} |
| |
if (!$resId) { return ''; } |
| |
return $self->getById($resId); |
| |
} |
| |
|
| |
sub retrieveResources { |
| |
my $self = shift; |
| |
my $map = shift; |
| |
my $filterFunc = shift; |
| |
if (!defined ($filterFunc)) { |
| |
$filterFunc = sub {return 1;}; |
| |
} |
| |
my $recursive = shift; |
| |
if (!defined($recursive)) { $recursive = 1; } |
| |
my $bailout = shift; |
| |
if (!defined($bailout)) { $bailout = 0; } |
| |
|
| |
# Create the necessary iterator. |
| |
if (!ref($map)) { # assume it's a url of a map. |
| |
$map = $self->getMapByUrl($map); |
| |
} |
| |
|
| |
# Check the map's validity. |
| |
if (!$map || !$map->is_map()) { |
| |
# Oh, to throw an exception.... how I'd love that! |
| |
return (); |
| |
} |
| |
|
| |
# Get an iterator. |
| |
my $it = $self->getIterator($map->map_start(), $map->map_finish(), |
| |
!$recursive); |
| |
|
| |
my @resources = (); |
| |
|
| |
# Run down the iterator and collect the resources. |
| |
my $depth = 1; |
| |
$it->next(); |
| |
my $curRes = $it->next(); |
| |
|
| |
while ($depth > 0) { |
| |
if ($curRes == $it->BEGIN_MAP()) { |
| |
$depth++; |
| |
} |
| |
if ($curRes == $it->END_MAP()) { |
| |
$depth--; |
| |
} |
| |
|
| |
if (ref($curRes)) { |
| |
if (!&$filterFunc($curRes)) { |
| |
next; |
| |
} |
| |
|
| |
push @resources, $curRes; |
| |
|
| |
if ($bailout) { |
| |
return @resources; |
| |
} |
| |
} |
| |
|
| |
$curRes = $it->next(); |
| |
} |
| |
|
| |
return @resources; |
| |
} |
| |
|
| |
sub hasResource { |
| |
my $self = shift; |
| |
my $map = shift; |
| |
my $filterFunc = shift; |
| |
my $recursive = shift; |
| |
|
| |
return scalar($self->retrieveResources($map, $filterFunc, $recursive, 1)) > 0; |
| |
} |
| |
|
| 1; |
1; |
| |
|
| package Apache::lonnavmaps::iterator; |
package Apache::lonnavmaps::iterator; |
| |
|
| # This package must precede "navmap" because "navmap" uses it. In |
|
| # order to keep the documentation order straight, the iterator is documented |
|
| # after the navmap object. |
|
| |
|
| =pod |
=pod |
| |
|
| =back |
=back |
|
Line 1384 getIterator behaves as follows:
|
Line 1757 getIterator behaves as follows:
|
| |
|
| =over 4 |
=over 4 |
| |
|
| =item B<getIterator>(nav_map, firstResource, finishResource, filterHash): All parameters are optional. firstResource is a resource reference corresponding to where the iterator should start. It defaults to navmap->firstResource() for the corresponding nav map. finishResource corresponds to where you want the iterator to end, defaulting to navmap->finishResource(). It is your responsibility to ensure that the iterator will actually get there. filterHash is a hash used as a set containing strings representing the resource IDs, defaulting to empty. Condition is a 1 or 0 that sets what to do with the filter hash: If a 1, then only resource that exist IN the filterHash will be recursed on. If it is a 0, only resources NOT in the filterHash will be recursed on. Defaults to 0. |
=item * B<getIterator>(firstResource, finishResource, filterHash, condition, forceTop): All parameters are optional. firstResource is a resource reference corresponding to where the iterator should start. It defaults to navmap->firstResource() for the corresponding nav map. finishResource corresponds to where you want the iterator to end, defaulting to navmap->finishResource(). filterHash is a hash used as a set containing strings representing the resource IDs, defaulting to empty. Condition is a 1 or 0 that sets what to do with the filter hash: If a 0, then only resource that exist IN the filterHash will be recursed on. If it is a 1, only resources NOT in the filterHash will be recursed on. Defaults to 0. forceTop is a boolean value. If it is false (default), the iterator will only return the first level of map that is not just a single, 'redirecting' map. If true, the iterator will return all information, starting with the top-level map, regardless of content. |
| |
|
| Thus, by default, all resources will be shown. Change the condition to a 1 without changing the hash, and only the top level of the map will be shown. Changing the condition to 1 and including some values in the hash will allow you to selectively examine parts of the navmap, while leaving it on 0 and adding things to the hash will allow you to selectively ignore parts of the nav map. See the handler code for examples. |
Thus, by default, only top-level resources will be shown. Change the condition to a 1 without changing the hash, and all resources will be shown. Changing the condition to 1 and including some values in the hash will allow you to selectively suppress parts of the navmap, while leaving it on 0 and adding things to the hash will allow you to selectively add parts of the nav map. See the handler code for examples. |
| |
|
| The iterator will return either a reference to a resource object, or a token representing something in the map, such as the beginning of a new branch. The possible tokens are: |
The iterator will return either a reference to a resource object, or a token representing something in the map, such as the beginning of a new branch. The possible tokens are: |
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * some list of tokens here |
=item * BEGIN_MAP: A new map is being recursed into. This is returned I<after> the map resource itself is returned. |
| |
|
| |
=item * END_MAP: The map is now done. |
| |
|
| |
=item * BEGIN_BRANCH: A branch is now starting. The next resource returned will be the first in that branch. |
| |
|
| |
=item * END_BRANCH: The branch is now done. |
| |
|
| =back |
=back |
| |
|
| The tokens are retreivable via methods on the iterator object, i.e., $iterator->END_NAV_MAP. (Perl will automatically optimize these into constants. |
The tokens are retreivable via methods on the iterator object, i.e., $iterator->END_MAP. |
| |
|
| |
Maps can contain empty resources. The iterator will automatically skip over such resources, but will still treat the structure correctly. Thus, a complicated map with several branches, but consisting entirely of empty resources except for one beginning or ending resource, will cause a lot of BRANCH_STARTs and BRANCH_ENDs, but only one resource will be returned. |
| |
|
| |
=back |
| |
|
| =cut |
=cut |
| |
|
| # Here are the tokens for the iterator: |
# Here are the tokens for the iterator: |
| |
|
| sub END_NAV_MAP { return 0; } # Represents end of entire nav map |
|
| sub BEGIN_MAP { return 1; } # begining of a new map |
sub BEGIN_MAP { return 1; } # begining of a new map |
| sub END_MAP { return 2; } # end of the map |
sub END_MAP { return 2; } # end of the map |
| sub BEGIN_BRANCH { return 3; } # beginning of a branch |
sub BEGIN_BRANCH { return 3; } # beginning of a branch |
| sub END_BRANCH { return 4; } # end of a branch |
sub END_BRANCH { return 4; } # end of a branch |
| |
sub FORWARD { return 1; } # go forward |
| |
sub BACKWARD { return 2; } |
| |
|
| |
sub min { |
| |
(my $a, my $b) = @_; |
| |
if ($a < $b) { return $a; } else { return $b; } |
| |
} |
| |
|
| # Params: nav map, start resource, end resource, filter, condition, |
# In the CVS repository, documentation of this algorithm is included |
| # already seen hash ref |
# in /doc/lonnavdocs, as a PDF and .tex source. Markers like **1** |
| |
# will reference the same location in the text as the part of the |
| |
# algorithm is running through. |
| |
|
| sub new { |
sub new { |
| # magic invocation to create a class instance |
# magic invocation to create a class instance |
|
Line 1436 sub new {
|
Line 1827 sub new {
|
| # A hash, used as a set, of resource already seen |
# A hash, used as a set, of resource already seen |
| $self->{ALREADY_SEEN} = shift; |
$self->{ALREADY_SEEN} = shift; |
| if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
| |
$self->{CONDITION} = shift; |
| |
|
| |
# Do we want to automatically follow "redirection" maps? |
| |
$self->{FORCE_TOP} = shift; |
| |
|
| |
# Now, we need to pre-process the map, by walking forward and backward |
| |
# over the parts of the map we're going to look at. |
| |
|
| |
# The processing steps are exactly the same, except for a few small |
| |
# changes, so I bundle those up in the following list of two elements: |
| |
# (direction_to_iterate, VAL_name, next_resource_method_to_call, |
| |
# first_resource). |
| |
# This prevents writing nearly-identical code twice. |
| |
my @iterations = ( [FORWARD(), 'TOP_DOWN_VAL', 'getNext', |
| |
'FIRST_RESOURCE'], |
| |
[BACKWARD(), 'BOT_UP_VAL', 'getPrevious', |
| |
'FINISH_RESOURCE'] ); |
| |
|
| |
my $maxDepth = 0; # tracks max depth |
| |
|
| |
# If there is only one resource in this map, and it's a map, we |
| |
# want to remember that, so the user can ask for the first map |
| |
# that isn't just a redirector. |
| |
my $resource; my $resourceCount = 0; |
| |
|
| |
# **1** |
| |
|
| |
foreach my $pass (@iterations) { |
| |
my $direction = $pass->[0]; |
| |
my $valName = $pass->[1]; |
| |
my $nextResourceMethod = $pass->[2]; |
| |
my $firstResourceName = $pass->[3]; |
| |
|
| |
my $iterator = Apache::lonnavmaps::DFSiterator->new($self->{NAV_MAP}, |
| |
$self->{FIRST_RESOURCE}, |
| |
$self->{FINISH_RESOURCE}, |
| |
{}, undef, 0, $direction); |
| |
|
| |
# prime the recursion |
| |
$self->{$firstResourceName}->{DATA}->{$valName} = 0; |
| |
my $depth = 0; |
| |
$iterator->next(); |
| |
my $curRes = $iterator->next(); |
| |
while ($depth > -1) { |
| |
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $iterator->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($curRes)) { |
| |
# If there's only one resource, this will save it |
| |
# we have to filter empty resources from consideration here, |
| |
# or even "empty", redirecting maps have two (start & finish) |
| |
# or three (start, finish, plus redirector) |
| |
if($direction == FORWARD && $curRes->src()) { |
| |
$resource = $curRes; $resourceCount++; |
| |
} |
| |
my $resultingVal = $curRes->{DATA}->{$valName}; |
| |
my $nextResources = $curRes->$nextResourceMethod(); |
| |
my $nextCount = scalar(@{$nextResources}); |
| |
|
| |
if ($nextCount == 1) { # **3** |
| |
my $current = $nextResources->[0]->{DATA}->{$valName} || 999999999; |
| |
$nextResources->[0]->{DATA}->{$valName} = min($resultingVal, $current); |
| |
} |
| |
|
| |
if ($nextCount > 1) { # **4** |
| |
foreach my $res (@{$nextResources}) { |
| |
my $current = $res->{DATA}->{$valName} || 999999999; |
| |
$res->{DATA}->{$valName} = min($current, $resultingVal + 1); |
| |
} |
| |
} |
| |
} |
| |
|
| |
# Assign the final val (**2**) |
| |
if (ref($curRes) && $direction == BACKWARD()) { |
| |
my $finalDepth = min($curRes->{DATA}->{TOP_DOWN_VAL}, |
| |
$curRes->{DATA}->{BOT_UP_VAL}); |
| |
|
| |
$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth; |
| |
if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;} |
| |
} |
| |
$curRes = $iterator->next(); |
| |
} |
| |
} |
| |
|
| |
# Check: Was this only one resource, a map? |
| |
if ($resourceCount == 1 && $resource->is_map() && !$self->{FORCE_TOP}) { |
| |
my $firstResource = $resource->map_start(); |
| |
my $finishResource = $resource->map_finish(); |
| |
return |
| |
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, |
| |
$self->{ALREADY_SEEN}, |
| |
$self->{CONDITION}, 0); |
| |
|
| |
} |
| |
|
| |
# Set up some bookkeeping information. |
| |
$self->{CURRENT_DEPTH} = 0; |
| |
$self->{MAX_DEPTH} = $maxDepth; |
| |
$self->{STACK} = []; |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
|
| |
for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) { |
| |
push @{$self->{STACK}}, []; |
| |
} |
| |
|
| |
# Prime the recursion w/ the first resource **5** |
| |
push @{$self->{STACK}->[0]}, $self->{FIRST_RESOURCE}; |
| |
$self->{ALREADY_SEEN}->{$self->{FIRST_RESOURCE}->{ID}} = 1; |
| |
|
| |
bless ($self); |
| |
|
| |
return $self; |
| |
} |
| |
|
| |
sub next { |
| |
my $self = shift; |
| |
|
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
# grab the next from the recursive iterator |
| |
my $next = $self->{RECURSIVE_ITERATOR}->next(); |
| |
|
| |
# is it a begin or end map? If so, update the depth |
| |
if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; } |
| |
if ($next == END_MAP() ) { $self->{RECURSIVE_DEPTH}--; } |
| |
|
| |
# Are we back at depth 0? If so, stop recursing |
| |
if ($self->{RECURSIVE_DEPTH} == 0) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
} |
| |
|
| |
return $next; |
| |
} |
| |
|
| |
if (defined($self->{FORCE_NEXT})) { |
| |
my $tmp = $self->{FORCE_NEXT}; |
| |
$self->{FORCE_NEXT} = undef; |
| |
return $tmp; |
| |
} |
| |
|
| |
# Have we not yet begun? If not, return BEGIN_MAP and |
| |
# remember we've started. |
| |
if ( !$self->{STARTED} ) { |
| |
$self->{STARTED} = 1; |
| |
return $self->BEGIN_MAP(); |
| |
} |
| |
|
| |
# Here's the guts of the iterator. |
| |
|
| |
# Find the next resource, if any. |
| |
my $found = 0; |
| |
my $i = $self->{MAX_DEPTH}; |
| |
my $newDepth; |
| |
my $here; |
| |
while ( $i >= 0 && !$found ) { |
| |
if ( scalar(@{$self->{STACK}->[$i]}) > 0 ) { # **6** |
| |
$here = pop @{$self->{STACK}->[$i]}; # **7** |
| |
$found = 1; |
| |
$newDepth = $i; |
| |
} |
| |
$i--; |
| |
} |
| |
|
| |
# If we still didn't find anything, we're done. |
| |
if ( !$found ) { |
| |
# We need to get back down to the correct branch depth |
| |
if ( $self->{CURRENT_DEPTH} > 0 ) { |
| |
$self->{CURRENT_DEPTH}--; |
| |
return END_BRANCH(); |
| |
} else { |
| |
return END_MAP(); |
| |
} |
| |
} |
| |
|
| |
# If this is not a resource, it must be an END_BRANCH marker we want |
| |
# to return directly. |
| |
if (!ref($here)) { # **8** |
| |
if ($here == END_BRANCH()) { # paranoia, in case of later extension |
| |
$self->{CURRENT_DEPTH}--; |
| |
return $here; |
| |
} |
| |
} |
| |
|
| |
# Otherwise, it is a resource and it's safe to store in $self->{HERE} |
| |
$self->{HERE} = $here; |
| |
|
| |
# Get to the right level |
| |
if ( $self->{CURRENT_DEPTH} > $newDepth ) { |
| |
push @{$self->{STACK}->[$newDepth]}, $here; |
| |
$self->{CURRENT_DEPTH}--; |
| |
return END_BRANCH(); |
| |
} |
| |
if ( $self->{CURRENT_DEPTH} < $newDepth) { |
| |
push @{$self->{STACK}->[$newDepth]}, $here; |
| |
$self->{CURRENT_DEPTH}++; |
| |
return BEGIN_BRANCH(); |
| |
} |
| |
|
| |
# If we made it here, we have the next resource, and we're at the |
| |
# right branch level. So let's examine the resource for where |
| |
# we can get to from here. |
| |
|
| |
# So we need to look at all the resources we can get to from here, |
| |
# categorize them if we haven't seen them, remember if we have a new |
| |
my $nextUnfiltered = $here->getNext(); |
| |
my $maxDepthAdded = -1; |
| |
|
| |
for (@$nextUnfiltered) { |
| |
if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) { |
| |
my $depth = $_->{DATA}->{DISPLAY_DEPTH}; |
| |
push @{$self->{STACK}->[$depth]}, $_; |
| |
$self->{ALREADY_SEEN}->{$_->{ID}} = 1; |
| |
if ($maxDepthAdded < $depth) { $maxDepthAdded = $depth; } |
| |
} |
| |
} |
| |
|
| |
# Is this the end of a branch? If so, all of the resources examined above |
| |
# led to lower levels then the one we are currently at, so we push a END_BRANCH |
| |
# marker onto the stack so we don't forget. |
| |
# Example: For the usual A(BC)(DE)F case, when the iterator goes down the |
| |
# BC branch and gets to C, it will see F as the only next resource, but it's |
| |
# one level lower. Thus, this is the end of the branch, since there are no |
| |
# more resources added to this level or above. |
| |
# We don't do this if the examined resource is the finish resource, |
| |
# because the condition given above is true, but the "END_MAP" will |
| |
# take care of things and we should already be at depth 0. |
| |
my $isEndOfBranch = $maxDepthAdded < $self->{CURRENT_DEPTH}; |
| |
if ($isEndOfBranch && $here != $self->{FINISH_RESOURCE}) { # **9** |
| |
push @{$self->{STACK}->[$self->{CURRENT_DEPTH}]}, END_BRANCH(); |
| |
} |
| |
|
| |
# That ends the main iterator logic. Now, do we want to recurse |
| |
# down this map (if this resource is a map)? |
| |
if ($self->{HERE}->is_map() && |
| |
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 1; |
| |
my $firstResource = $self->{HERE}->map_start(); |
| |
my $finishResource = $self->{HERE}->map_finish(); |
| |
|
| |
$self->{RECURSIVE_ITERATOR} = |
| |
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, |
| |
$self->{ALREADY_SEEN}, $self->{CONDITION}); |
| |
} |
| |
|
| |
# If this is a blank resource, don't actually return it. |
| |
# Should you ever find you need it, make sure to add an option to the code |
| |
# that you can use; other things depend on this behavior. |
| |
my $browsePriv = $self->{HERE}->browsePriv(); |
| |
if (!$self->{HERE}->src() || |
| |
(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) { |
| |
return $self->next(); |
| |
} |
| |
|
| |
return $self->{HERE}; |
| |
|
| |
} |
| |
|
| |
=pod |
| |
|
| |
The other method available on the iterator is B<getStack>, which returns an array populated with the current 'stack' of maps, as references to the resource objects. Example: This is useful when making the navigation map, as we need to check whether we are under a page map to see if we need to link directly to the resource, or to the page. The first elements in the array will correspond to the top of the stack (most inclusive map). |
| |
|
| |
=cut |
| |
|
| |
sub getStack { |
| |
my $self=shift; |
| |
|
| |
my @stack; |
| |
|
| |
$self->populateStack(\@stack); |
| |
|
| |
return \@stack; |
| |
} |
| |
|
| |
# Private method: Calls the iterators recursively to populate the stack. |
| |
sub populateStack { |
| |
my $self=shift; |
| |
my $stack = shift; |
| |
|
| |
push @$stack, $self->{HERE} if ($self->{HERE}); |
| |
|
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
$self->{RECURSIVE_ITERATOR}->populateStack($stack); |
| |
} |
| |
} |
| |
|
| |
1; |
| |
|
| |
package Apache::lonnavmaps::DFSiterator; |
| |
|
| |
# Not documented in the perldoc: This is a simple iterator that just walks |
| |
# through the nav map and presents the resources in a depth-first search |
| |
# fashion, ignorant of conditionals, randomized resources, etc. It presents |
| |
# BEGIN_MAP and END_MAP, but does not understand branches at all. It is |
| |
# useful for pre-processing of some kind, and is in fact used by the main |
| |
# iterator that way, but that's about it. |
| |
# One could imagine merging this into the init routine of the main iterator, |
| |
# but this might as well be left seperate, since it is possible some other |
| |
# use might be found for it. - Jeremy |
| |
|
| |
# Unlike the main iterator, this DOES return all resources, even blank ones. |
| |
# The main iterator needs them to correctly preprocess the map. |
| |
|
| |
sub BEGIN_MAP { return 1; } # begining of a new map |
| |
sub END_MAP { return 2; } # end of the map |
| |
sub FORWARD { return 1; } # go forward |
| |
sub BACKWARD { return 2; } |
| |
|
| |
# Params: Nav map ref, first resource id/ref, finish resource id/ref, |
| |
# filter hash ref (or undef), already seen hash or undef, condition |
| |
# (as in main iterator), direction FORWARD or BACKWARD (undef->forward). |
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
$self->{NAV_MAP} = shift; |
| |
return undef unless ($self->{NAV_MAP}); |
| |
|
| |
$self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource(); |
| |
$self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource(); |
| |
|
| |
# If the given resources are just the ID of the resource, get the |
| |
# objects |
| |
if (!ref($self->{FIRST_RESOURCE})) { $self->{FIRST_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FIRST_RESOURCE}); } |
| |
if (!ref($self->{FINISH_RESOURCE})) { $self->{FINISH_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FINISH_RESOURCE}); } |
| |
|
| |
$self->{FILTER} = shift; |
| |
|
| |
# A hash, used as a set, of resource already seen |
| |
$self->{ALREADY_SEEN} = shift; |
| |
if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
| |
$self->{CONDITION} = shift; |
| |
$self->{DIRECTION} = shift || FORWARD(); |
| |
|
| # Flag: Have we started yet? If not, the first action is to return BEGIN_MAP. |
# Flag: Have we started yet? |
| $self->{STARTED} = 0; |
$self->{STARTED} = 0; |
| |
|
| # Should we continue calling the recursive iterator, if any? |
# Should we continue calling the recursive iterator, if any? |
|
Line 1451 sub new {
|
Line 2179 sub new {
|
| $self->{RECURSIVE_DEPTH} = 0; |
$self->{RECURSIVE_DEPTH} = 0; |
| |
|
| # For keeping track of our branches, we maintain our own stack |
# For keeping track of our branches, we maintain our own stack |
| $self->{BRANCH_STACK} = []; |
$self->{STACK} = []; |
| # If the size shrinks, we exhausted a branch |
|
| $self->{BRANCH_STACK_SIZE} = 0; |
|
| $self->{BRANCH_DEPTH} = 0; |
|
| |
|
| # For returning two things in a forced sequence |
|
| $self->{FORCE_NEXT} = undef; |
|
| |
|
| # Start with the first resource |
# Start with the first resource |
| push @{$self->{BRANCH_STACK}}, $self->{FIRST_RESOURCE}; |
if ($self->{DIRECTION} == FORWARD) { |
| $self->{BRANCH_STACK_SIZE} = 1; |
push @{$self->{STACK}}, $self->{FIRST_RESOURCE}; |
| |
} else { |
| |
push @{$self->{STACK}}, $self->{FINISH_RESOURCE}; |
| |
} |
| |
|
| bless($self); |
bless($self); |
| return $self; |
return $self; |
| } |
} |
| |
|
| # Note... this function is *touchy*. I strongly recommend tracing |
|
| # through it with the debugger a few times on a non-trivial map before |
|
| # modifying it. Order is *everything*. |
|
| sub next { |
sub next { |
| my $self = shift; |
my $self = shift; |
| |
|
| # Iterator logic goes here |
|
| |
|
| # Is this return value pre-determined? |
|
| if (defined($self->{FORCE_NEXT})) { |
|
| my $tmp = $self->{FORCE_NEXT}; |
|
| $self->{FORCE_NEXT} = undef; |
|
| return $tmp; |
|
| } |
|
| |
|
| # Are we using a recursive iterator? If so, pull from that and |
# Are we using a recursive iterator? If so, pull from that and |
| # watch the depth; we want to resume our level at the correct time. |
# watch the depth; we want to resume our level at the correct time. |
| if ($self->{RECURSIVE_ITERATOR_FLAG}) |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| { |
|
| # grab the next from the recursive iterator |
# grab the next from the recursive iterator |
| my $next = $self->{RECURSIVE_ITERATOR}->next(); |
my $next = $self->{RECURSIVE_ITERATOR}->next(); |
| |
|
|
Line 1502 sub next {
|
Line 2214 sub next {
|
| } |
} |
| |
|
| # Is there a current resource to grab? If not, then return |
# Is there a current resource to grab? If not, then return |
| # END_BRANCH and END_MAP in succession. |
# END_MAP, which will end the iterator. |
| if (scalar(@{$self->{BRANCH_STACK}}) == 0) { |
if (scalar(@{$self->{STACK}}) == 0) { |
| if ($self->{BRANCH_DEPTH} > 0) { |
return $self->END_MAP(); |
| $self->{FORCE_NEXT} = $self->END_MAP(); |
|
| $self->{BRANCH_DEPTH}--; |
|
| return $self->END_BRANCH(); |
|
| } else { |
|
| return $self->END_MAP(); |
|
| } |
|
| } |
} |
| |
|
| # Have we not yet begun? If not, return BEGIN_MAP and |
# Have we not yet begun? If not, return BEGIN_MAP and |
|
Line 1520 sub next {
|
Line 2226 sub next {
|
| return $self->BEGIN_MAP; |
return $self->BEGIN_MAP; |
| } |
} |
| |
|
| # Did the branch stack shrink since last run? If so, |
|
| # we exhausted a branch last time, therefore, we're about |
|
| # to start a new one. (We know because we already checked to see |
|
| # if the stack was empty.) |
|
| if ( scalar (@{$self->{BRANCH_STACK}}) < $self->{BRANCH_STACK_SIZE}) { |
|
| $self->{BRANCH_STACK_SIZE} = scalar(@{$self->{BRANCH_STACK}}); |
|
| $self->{BRANCH_DEPTH}++; |
|
| return $self->BEGIN_BRANCH(); |
|
| } |
|
| |
|
| # Remember the size for comparision next time. |
|
| $self->{BRANCH_STACK_SIZE} = scalar(@{$self->{BRANCH_STACK}}); |
|
| |
|
| # If the next resource we mean to return is going to need |
|
| # a lower branch level, terminate branches until we get |
|
| # there. |
|
| |
|
| # Get the next resource in the branch |
# Get the next resource in the branch |
| $self->{HERE} = pop @{$self->{BRANCH_STACK}}; |
$self->{HERE} = pop @{$self->{STACK}}; |
| |
|
| # Are we at the right depth? If not, close a branch and return |
# remember that we've seen this, so we don't return it again later |
| # the current resource onto the branch stack |
|
| if (defined($self->{HERE}->{DATA}->{ITERATOR_DEPTH}) |
|
| && $self->{HERE}->{DATA}->{ITERATOR_DEPTH} < |
|
| $self->{BRANCH_DEPTH} ) { |
|
| $self->{BRANCH_DEPTH}--; |
|
| # return it so we can pick it up eventually |
|
| push @{$self->{BRANCH_STACK}}, $self->{HERE}; |
|
| return $self->END_BRANCH(); |
|
| } |
|
| |
|
| # We always return it after this point and never before |
|
| # (proof: look at just the return statements), so we |
|
| # remember that we've seen this. |
|
| $self->{ALREADY_SEEN}->{$self->{HERE}->{ID}} = 1; |
$self->{ALREADY_SEEN}->{$self->{HERE}->{ID}} = 1; |
| |
|
| # Are we at the utter end? If so, return the END_NAV_MAP marker. |
|
| if ($self->{HERE} == $self->{NAV_MAP}->finishResource() ) { |
|
| $self->{FORCE_NEXT} = $self->END_NAV_MAP; |
|
| return $self->{HERE}; |
|
| } |
|
| |
|
| # Get the next possible resources |
# Get the next possible resources |
| my $nextUnfiltered = $self->{HERE}->getNext(); |
my $nextUnfiltered; |
| |
if ($self->{DIRECTION} == FORWARD()) { |
| |
$nextUnfiltered = $self->{HERE}->getNext(); |
| |
} else { |
| |
$nextUnfiltered = $self->{HERE}->getPrevious(); |
| |
} |
| my $next = []; |
my $next = []; |
| |
|
| # filter the next possibilities to remove things we've |
# filter the next possibilities to remove things we've |
| # already seen. Also, remember what branch depth they should |
# already seen. |
| # be displayed at, since there's no other reliable way to tell. |
|
| foreach (@$nextUnfiltered) { |
foreach (@$nextUnfiltered) { |
| if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) { |
if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) { |
| push @$next, $_; |
push @$next, $_; |
| $_->{DATA}->{ITERATOR_DEPTH} = |
|
| $self->{BRANCH_DEPTH} + 1; |
|
| } |
} |
| } |
} |
| |
|
| # Handle branch cases: |
|
| # Nothing is available next: BRANCH_END |
|
| # 1 thing next: standard non-branch |
|
| # 2+ things next: have some branches |
|
| my $nextCount = scalar(@$next); |
|
| if ($nextCount == 0) { |
|
| # Return this and on the next run, close the branch up if we're |
|
| # in a branch |
|
| if ($self->{BRANCH_DEPTH} > 0 ) { |
|
| $self->{FORCE_NEXT} = $self->END_BRANCH(); |
|
| $self->{BRANCH_DEPTH}--; |
|
| } |
|
| return $self->{HERE}; |
|
| } |
|
| |
|
| while (@$next) { |
while (@$next) { |
| # copy the next possibilities over to the branch stack |
# copy the next possibilities over to the stack |
| # in the right order |
push @{$self->{STACK}}, shift @$next; |
| push @{$self->{BRANCH_STACK}}, shift @$next; |
|
| } |
|
| |
|
| if ($nextCount >= 2) { |
|
| $self->{FORCE_NEXT} = $self->BEGIN_BRANCH(); |
|
| $self->{BRANCH_DEPTH}++; |
|
| return $self->{HERE}; |
|
| } |
} |
| |
|
| # If this is a map and we want to recurse down it... (not filtered out) |
# If this is a map and we want to recurse down it... (not filtered out) |
| if ($self->{HERE}->is_map() && |
if ($self->{HERE}->is_map() && |
| !defined($self->{FILTER}->{$self->{HERE}->map_pc()})) { |
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) { |
| $self->{RECURSIVE_ITERATOR_FLAG} = 1; |
$self->{RECURSIVE_ITERATOR_FLAG} = 1; |
| my $firstResource = $self->{HERE}->map_start(); |
my $firstResource = $self->{HERE}->map_start(); |
| my $finishResource = $self->{HERE}->map_finish(); |
my $finishResource = $self->{HERE}->map_finish(); |
| |
|
| # Odd perl syntax here; $self->new allows one to create a new iterator |
|
| # can't figure out how to ref this package directly correctly |
|
| # isn't MAIN::new, __PACKAGE__::new or Apache::lonnavmaps::iterator->new |
|
| $self->{RECURSIVE_ITERATOR} = |
$self->{RECURSIVE_ITERATOR} = |
| Apache::lonnavmaps::iterator->new ($self->{NAV_MAP}, $firstResource, |
Apache::lonnavmaps::DFSiterator->new ($self->{NAV_MAP}, $firstResource, |
| $finishResource, $self->{FILTER}, $self->{ALREADY_SEEN}); |
$finishResource, $self->{FILTER}, $self->{ALREADY_SEEN}, |
| # prime the new iterator with the first resource |
$self->{CONDITION}, $self->{DIRECTION}); |
| #push @{$self->{RECURSIVE_ITERATOR}->{BRANCH_STACK}}, $firstResource; |
|
| } |
} |
| |
|
| return $self->{HERE}; |
return $self->{HERE}; |
| } |
} |
| |
|
| =pod |
|
| |
|
| The other method available on the iterator is B<getStack>, which returns an array populated with the current 'stack' of maps, as references to the resource objects. Example: This is useful when making the navigation map, as we need to check whether we are under a page map to see if we need to link directly to the resource, or to the page. The first elements in the array will correspond to the top of the stack (most inclusive map). |
|
| |
|
| =cut |
|
| |
|
| sub getStack { |
|
| my $self=shift; |
|
| |
|
| my @stack; |
|
| |
|
| $self->populateStack(\@stack); |
|
| |
|
| return \@stack; |
|
| } |
|
| |
|
| # Private method: Calls the iterators recursively to populate the stack. |
|
| sub populateStack { |
|
| my $self=shift; |
|
| my $stack = shift; |
|
| |
|
| push @$stack, $self->{HERE}; |
|
| |
|
| if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
|
| $self->{RECURSIVE_ITERATOR}->populateStack($stack); |
|
| } |
|
| } |
|
| |
|
| 1; |
1; |
| |
|
| package Apache::lonnavmaps::resource; |
package Apache::lonnavmaps::resource; |
|
Line 1666 A resource object encapsulates a resourc
|
Line 2284 A resource object encapsulates a resourc
|
| |
|
| A resource only makes sense in the context of a navmap, as some of the data is stored in the navmap object. |
A resource only makes sense in the context of a navmap, as some of the data is stored in the navmap object. |
| |
|
| You will probably never need to instantiate this object directly. Use Apache::lonnavmap::navmap, and use the "start" method to obtain the starting resource. |
You will probably never need to instantiate this object directly. Use Apache::lonnavmaps::navmap, and use the "start" method to obtain the starting resource. |
| |
|
| =head2 Public Members |
=head2 Public Members |
| |
|
|
Line 1676 resource objects have a hash called DATA
|
Line 2294 resource objects have a hash called DATA
|
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * B<new>($navmapRef, $idString): The first arg is a reference to the parent navmap object. The second is the idString of the resource itself. |
=item * B<new>($navmapRef, $idString): The first arg is a reference to the parent navmap object. The second is the idString of the resource itself. Very rarely, if ever, called directly. Use the nav map->getByID() method. |
| |
|
| |
=back |
| |
|
| =cut |
=cut |
| |
|
|
Line 1691 sub new {
|
Line 2311 sub new {
|
| |
|
| # Store this new resource in the parent nav map's cache. |
# Store this new resource in the parent nav map's cache. |
| $self->{NAV_MAP}->{RESOURCE_CACHE}->{$self->{ID}} = $self; |
$self->{NAV_MAP}->{RESOURCE_CACHE}->{$self->{ID}} = $self; |
| |
$self->{RESOURCE_ERROR} = 0; |
| |
|
| # A hash that can be used by two-pass algorithms to store data |
# A hash that can be used by two-pass algorithms to store data |
| # about this resource in. Not used by the resource object |
# about this resource in. Not used by the resource object |
|
Line 1702 sub new {
|
Line 2323 sub new {
|
| return $self; |
return $self; |
| } |
} |
| |
|
| |
# private function: simplify the NAV_HASH lookups we keep doing |
| |
# pass the name, and to automatically append my ID, pass a true val on the |
| |
# second param |
| |
sub navHash { |
| |
my $self = shift; |
| |
my $param = shift; |
| |
my $id = shift; |
| |
return $self->{NAV_MAP}->navhash($param . ($id?$self->{ID}:"")); |
| |
} |
| |
|
| =pod |
=pod |
| |
|
| =item * B<is_map>: Returns true if this is a map, false otherwise. |
B<Metadata Retreival> |
| |
|
| |
These are methods that help you retrieve metadata about the resource: Method names are based on the fields in the compiled course representation. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<compTitle>: Returns a "composite title", that is equal to $res->title() if the resource has a title, and is otherwise the last part of the URL (e.g., "problem.problem"). |
| |
|
| |
=item * B<ext>: Returns true if the resource is external. |
| |
|
| |
=item * B<goesto>: Returns the "goesto" value from the compiled nav map. (It is likely you want to use B<getNext> instead.) |
| |
|
| |
=item * B<kind>: Returns the kind of the resource from the compiled nav map. |
| |
|
| |
=item * B<randomout>: Returns true if this resource was chosen to NOT be shown to the user by the random map selection feature. In other words, this is usually false. |
| |
|
| |
=item * B<randompick>: Returns true for a map if the randompick feature is being used on the map. (?) |
| |
|
| |
=item * B<src>: Returns the source for the resource. |
| |
|
| =item * B<title>: Returns title. |
=item * B<symb>: Returns the symb for the resource. |
| |
|
| =item * B<type>: Returns the type of the resource, "start", "normal", or "finish". |
=item * B<title>: Returns the title of the resource. |
| |
|
| =item * B<problem>: Returns true if the resource is a problem type, false otherwise. (Looks at the extension on the src field.) |
=item * B<to>: Returns the "to" value from the compiled nav map. (It is likely you want to use B<getNext> instead.) |
| |
|
| =back |
=back |
| |
|
| =cut |
=cut |
| |
|
| # private function: simplify the NAV_HASH lookups we keep doing |
|
| # pass the name, and to automatically append my ID, pass a true val on the |
|
| # second param |
|
| sub navHash { |
|
| my $self = shift; |
|
| my $param = shift; |
|
| my $id = shift; |
|
| return $self->{NAV_MAP}->{NAV_HASH}->{$param . ($id?$self->{ID}:"")}; |
|
| } |
|
| |
|
| # These info functions can be used directly, as they don't return |
# These info functions can be used directly, as they don't return |
| # resource information. |
# resource information. |
| sub title { my $self=shift; return $self->navHash("title_", 1); } |
sub comesfrom { my $self=shift; return $self->navHash("comesfrom_", 1); } |
| sub type { my $self=shift; return $self->navHash("type_", 1); } |
sub ext { my $self=shift; return $self->navHash("ext_", 1) eq 'true:'; } |
| |
sub from { my $self=shift; return $self->navHash("from_", 1); } |
| sub goesto { my $self=shift; return $self->navHash("goesto_", 1); } |
sub goesto { my $self=shift; return $self->navHash("goesto_", 1); } |
| # "to" can return a comma seperated list for branches |
|
| sub to { my $self=shift; return $self->navHash("to_", 1); } |
|
| sub kind { my $self=shift; return $self->navHash("kind_", 1); } |
sub kind { my $self=shift; return $self->navHash("kind_", 1); } |
| |
sub randomout { my $self=shift; return $self->navHash("randomout_", 1); } |
| |
sub randompick { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->{PARM_HASH}->{$self->symb . |
| |
'.0.parameter_randompick'}; |
| |
} |
| sub src { |
sub src { |
| my $self=shift; |
my $self=shift; |
| return $self->navHash("src_", 1); |
return $self->navHash("src_", 1); |
|
Line 1746 sub symb {
|
Line 2390 sub symb {
|
| $self->navHash('map_id_'.$first)) |
$self->navHash('map_id_'.$first)) |
| . '___' . $second . '___' . $symbSrc; |
. '___' . $second . '___' . $symbSrc; |
| } |
} |
| sub is_problem { |
sub title { my $self=shift; return $self->navHash("title_", 1); } |
| my $self=shift; |
sub to { my $self=shift; return $self->navHash("to_", 1); } |
| my $src = $self->src(); |
sub compTitle { |
| return ($src =~ /problem$/); |
my $self = shift; |
| |
my $title = $self->title(); |
| |
if (!$title) { |
| |
$title = $self->src(); |
| |
$title = substr($title, rindex($title, '/') + 1); |
| |
} |
| |
return $title; |
| } |
} |
| |
=pod |
| |
|
| |
B<Predicate Testing the Resource> |
| |
|
| |
These methods are shortcuts to deciding if a given resource has a given property. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<is_map>: Returns true if the resource is a map type. |
| |
|
| |
=item * B<is_problem>: Returns true if the resource is a problem type, false otherwise. (Looks at the extension on the src field; might need more to work correctly.) |
| |
|
| |
=item * B<is_page>: Returns true if the resource is a page. |
| |
|
| |
=item * B<is_sequence>: Returns true if the resource is a sequence. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
|
| sub is_html { |
sub is_html { |
| my $self=shift; |
my $self=shift; |
| my $src = $self->src(); |
my $src = $self->src(); |
| return ($src =~ /html$/); |
return ($src =~ /html$/); |
| } |
} |
| sub is_sequence { |
sub is_map { my $self=shift; return defined($self->navHash("is_map_", 1)); } |
| |
sub is_page { |
| my $self=shift; |
my $self=shift; |
| my $src = $self->src(); |
my $src = $self->src(); |
| return ($src =~ /sequence$/); |
return ($src =~ /page$/); |
| } |
} |
| sub is_page { |
sub is_problem { |
| my $self=shift; |
my $self=shift; |
| my $src = $self->src(); |
my $src = $self->src(); |
| return ($src =~ /page$/); |
return ($src =~ /problem$/); |
| |
} |
| |
sub is_sequence { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return ($src =~ /sequence$/); |
| } |
} |
| |
|
| |
# Private method: Shells out to the parmval in the nav map, handler parts. |
| |
|
| |
|
| # Move this into POD: In order to use these correctly, courseopt |
|
| # and useropt need to be generated |
|
| sub parmval { |
sub parmval { |
| my $self = shift; |
my $self = shift; |
| my $what = shift; |
my $what = shift; |
|
Line 1779 sub parmval {
|
Line 2452 sub parmval {
|
| return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb()); |
return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb()); |
| } |
} |
| |
|
| ##### |
=pod |
| # Map Queries |
|
| ##### |
|
| |
|
| # These methods relate to whether or not the resource is a map, and the |
B<Map Methods> |
| # attributes of that map. |
|
| |
These methods are useful for getting information about the map properties of the resource, if the resource is a map (B<is_map>). |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<map_finish>: Returns a reference to a resource object corresponding to the finish resource of the map. |
| |
|
| |
=item * B<map_pc>: Returns the pc value of the map, which is the first number that appears in the resource ID of the resources in the map, and is the number that appears around the middle of the symbs of the resources in that map. |
| |
|
| |
=item * B<map_start>: Returns a reference to a resource object corresponding to the start resource of the map. |
| |
|
| |
=item * B<map_type>: Returns a string with the type of the map in it. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| sub is_map { my $self=shift; return defined($self->navHash("is_map_", 1)); } |
|
| sub map_finish { |
sub map_finish { |
| my $self = shift; |
my $self = shift; |
| my $src = $self->src(); |
my $src = $self->src(); |
| |
$src = Apache::lonnet::clutter($src); |
| my $res = $self->navHash("map_finish_$src", 0); |
my $res = $self->navHash("map_finish_$src", 0); |
| $res = $self->{NAV_MAP}->getById($res); |
$res = $self->{NAV_MAP}->getById($res); |
| return $res; |
return $res; |
| } |
} |
| |
sub map_pc { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
return $self->navHash("map_pc_$src", 0); |
| |
} |
| sub map_start { |
sub map_start { |
| my $self = shift; |
my $self = shift; |
| my $src = $self->src(); |
my $src = $self->src(); |
| |
$src = Apache::lonnet::clutter($src); |
| my $res = $self->navHash("map_start_$src", 0); |
my $res = $self->navHash("map_start_$src", 0); |
| $res = $self->{NAV_MAP}->getById($res); |
$res = $self->{NAV_MAP}->getById($res); |
| return $res; |
return $res; |
| } |
} |
| sub map_pc { |
|
| my $self = shift; |
|
| my $src = $self->src(); |
|
| return $self->navHash("map_pc_$src", 0); |
|
| } |
|
| sub map_type { |
sub map_type { |
| my $self = shift; |
my $self = shift; |
| my $pc = $self->map_pc(); |
my $pc = $self->map_pc(); |
|
Line 1828 sub map_type {
|
Line 2515 sub map_type {
|
| |
|
| =head2 Resource Parameters |
=head2 Resource Parameters |
| |
|
| In order to use the resource parameters correctly, the nav map must have been instantiated with genCourseAndUserOptions set to true, so the courseopt and useropt is read correctly. Then, you can call these functions to get the relevant parameters for the resource. Each function defaults to "part 0", but can be directed to another part by passing the part as the second parameter. |
In order to use the resource parameters correctly, the nav map must have been instantiated with genCourseAndUserOptions set to true, so the courseopt and useropt is read correctly. Then, you can call these functions to get the relevant parameters for the resource. Each function defaults to part "0", but can be directed to another part by passing the part as the parameter. |
| |
|
| These methods are responsible for getting the parameter correct, not merely reflecting the contents of the GDBM hashes. As we move towards dates relative to other dates, these methods should be updated to reflect that. (Then, anybody using these methods won't have to update their code.) |
These methods are responsible for getting the parameter correct, not merely reflecting the contents of the GDBM hashes. As we move towards dates relative to other dates, these methods should be updated to reflect that. (Then, anybody using these methods won't have to update their code.) |
| |
|
|
Line 1850 These methods are responsible for gettin
|
Line 2537 These methods are responsible for gettin
|
| |
|
| =item * B<tol>: Get the tolerance for the problem. |
=item * B<tol>: Get the tolerance for the problem. |
| |
|
| |
=item * B<tries>: Get the number of tries the user has already used on the problem. |
| |
|
| =item * B<type>: Get the question type for the problem. |
=item * B<type>: Get the question type for the problem. |
| |
|
| =item * B<weight>: Get the weight for the problem. |
=item * B<weight>: Get the weight for the problem. |
|
Line 1871 sub answerdate {
|
Line 2560 sub answerdate {
|
| } |
} |
| return $self->parmval("answerdate", $part); |
return $self->parmval("answerdate", $part); |
| } |
} |
| |
sub awarded { my $self = shift; return $self->queryRestoreHash('awarded', shift); } |
| sub duedate { |
sub duedate { |
| (my $self, my $part) = @_; |
(my $self, my $part) = @_; |
| return $self->parmval("duedate", $part); |
return $self->parmval("duedate", $part); |
|
Line 1895 sub tol {
|
Line 2585 sub tol {
|
| (my $self, my $part) = @_; |
(my $self, my $part) = @_; |
| return $self->parmval("tol", $part); |
return $self->parmval("tol", $part); |
| } |
} |
| |
sub tries { |
| |
my $self = shift; |
| |
my $tries = $self->queryRestoreHash('tries', shift); |
| |
if (!defined($tries)) { return '0';} |
| |
return $tries; |
| |
} |
| sub type { |
sub type { |
| (my $self, my $part) = @_; |
(my $self, my $part) = @_; |
| return $self->parmval("type", $part); |
return $self->parmval("type", $part); |
| } |
} |
| sub weight { |
sub weight { |
| (my $self, my $part) = @_; |
my $self = shift; my $part = shift; |
| return $self->parmval("weight", $part); |
return $self->parmval("weight", $part); |
| } |
} |
| sub tries { |
|
| my $self = shift; |
|
| my $part = shift; |
|
| $part = '0' if (!defined($part)); |
|
| |
|
| # Make sure return hash is loaded, should error check |
|
| $self->getReturnHash(); |
|
| |
|
| my $tries = $self->{RETURN_HASH}->{'resource.'.$part.'.tries'}; |
|
| if (!defined($tries)) {return '0';} |
|
| return $tries; |
|
| } |
|
| |
|
| # Multiple things need this |
# Multiple things need this |
| sub getReturnHash { |
sub getReturnHash { |
| my $self = shift; |
my $self = shift; |
| |
|
| if (!defined($self->{RETURN_HASH})) { |
if (!defined($self->{RETURN_HASH})) { |
| my %tmpHash = &Apache::lonnet::restore($self->symb()); |
my %tmpHash = &Apache::lonnet::restore($self->symb()); |
| $self->{RETURN_HASH} = \%tmpHash; |
$self->{RETURN_HASH} = \%tmpHash; |
| } |
} |
| } |
} |
|
Line 1948 Misc. functions for the resource.
|
Line 2632 Misc. functions for the resource.
|
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * B<parts>(): Returns a list reference containing sorted strings corresponding to each part of the problem. To count the number of parts, use the list in a scalar context, and subtract one if greater then two. (One part problems have a part 0. Multi-parts have a part 0, plus a part for each part. You may or may not wish to filter out part 0.) |
=item * B<hasDiscussion>: Returns a false value if there has been discussion since the user last logged in, true if there has. Always returns false if the discussion data was not extracted when the nav map was constructed. |
| |
|
| |
=item * B<getFeedback>: Gets the feedback for the resource and returns the raw feedback string for the resource, or the null string if there is no feedback or the email data was not extracted when the nav map was constructed. Usually used like this: |
| |
|
| |
for (split(/\,/, $res->getFeedback())) { |
| |
my $link = &Apache::lonnet::escape($_); |
| |
... |
| |
|
| =item * B<countParts>(): Returns the number of parts of the problem a student can answer. Thus, for single part problems, returns 1. For multipart, it returns the number of parts in the problem, not including psuedo-part 0. |
and use the link as appropriate. |
| |
|
| |
=cut |
| |
|
| |
sub hasDiscussion { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->hasDiscussion($self->symb()); |
| |
} |
| |
|
| |
sub getFeedback { |
| |
my $self = shift; |
| |
my $source = $self->src(); |
| |
if ($source =~ /^\/res\//) { $source = substr $source, 5; } |
| |
return $self->{NAV_MAP}->getFeedback($source); |
| |
} |
| |
|
| |
sub getErrors { |
| |
my $self = shift; |
| |
my $source = $self->src(); |
| |
if ($source =~ /^\/res\//) { $source = substr $source, 5; } |
| |
return $self->{NAV_MAP}->getErrors($source); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<parts>(): Returns a list reference containing sorted strings corresponding to each part of the problem. To count the number of parts, use the list in a scalar context, and subtract one if greater than two. (One part problems have a part 0. Multi-parts have a part 0, plus a part for each part. Filtering part 0 if you want it is up to you.) |
| |
|
| |
=item * B<countParts>(): Returns the number of parts of the problem a student can answer. Thus, for single part problems, returns 1. For multipart, it returns the number of parts in the problem, not including psuedo-part 0. Thus, B<parts> may return an array with fewer parts in it then countParts might lead you to believe. |
| |
|
| =back |
=back |
| |
|
|
Line 1959 Misc. functions for the resource.
|
Line 2676 Misc. functions for the resource.
|
| sub parts { |
sub parts { |
| my $self = shift; |
my $self = shift; |
| |
|
| |
if ($self->ext) { return ['0']; } |
| |
|
| $self->extractParts(); |
$self->extractParts(); |
| return $self->{PARTS}; |
return $self->{PARTS}; |
| } |
} |
|
Line 1967 sub countParts {
|
Line 2686 sub countParts {
|
| my $self = shift; |
my $self = shift; |
| |
|
| my $parts = $self->parts(); |
my $parts = $self->parts(); |
| |
|
| if (scalar(@{$parts}) == 1) { return 1;} |
if ($self->{RESOURCE_ERROR}) { |
| |
return 0; |
| |
} |
| |
|
| |
if (scalar(@{$parts}) < 2) { return 1;} |
| |
|
| return scalar(@{$parts}) - 1; |
return scalar(@{$parts}) - 1; |
| } |
} |
|
Line 1977 sub countParts {
|
Line 2700 sub countParts {
|
| sub extractParts { |
sub extractParts { |
| my $self = shift; |
my $self = shift; |
| |
|
| return if ($self->{PARTS}); |
return if (defined($self->{PARTS})); |
| |
return if ($self->ext); |
| |
|
| $self->{PARTS} = []; |
$self->{PARTS} = []; |
| |
|
| # Retrieve part count |
# Retrieve part count, if this is a problem |
| foreach (split(/\,/,&Apache::lonnet::metadata($self->src(), |
if ($self->is_problem()) { |
| 'allpossiblekeys'))) { |
my $metadata = &Apache::lonnet::metadata($self->src(), 'packages'); |
| if ($_ =~ /^parameter\_(.*)\_opendate$/) { |
if (!$metadata) { |
| push @{$self->{PARTS}}, $1; |
$self->{RESOURCE_ERROR} = 1; |
| |
$self->{PARTS} = []; |
| |
return; |
| |
} |
| |
foreach (split(/\,/,$metadata)) { |
| |
if ($_ =~ /^part_(.*)$/) { |
| |
my $part = $1; |
| |
# check to see if part is turned off. |
| |
if (! Apache::loncommon::check_if_partid_hidden($part, $self->symb())) { |
| |
push @{$self->{PARTS}}, $1; |
| |
} |
| |
} |
| } |
} |
| |
|
| |
|
| |
my @sortedParts = sort @{$self->{PARTS}}; |
| |
$self->{PARTS} = \@sortedParts; |
| } |
} |
| |
|
| # Is this possible to do in one line? - Jeremy |
|
| my @sortedParts = sort @{$self->{PARTS}}; |
|
| $self->{PARTS} = \@sortedParts; |
|
| |
|
| return; |
return; |
| } |
} |
|
Line 2000 sub extractParts {
|
Line 2735 sub extractParts {
|
| |
|
| =head2 Resource Status |
=head2 Resource Status |
| |
|
| Problem resources have status information, reflecting their various dates and completion statuses. You can obtain this information and import symbolic constants to represent the status. |
Problem resources have status information, reflecting their various dates and completion statuses. |
| |
|
| There are two aspects to the status: the date-related information and the completion information. |
There are two aspects to the status: the date-related information and the completion information. |
| |
|
|
Line 2010 Idiomatic usage of these two methods wou
|
Line 2745 Idiomatic usage of these two methods wou
|
| my $dateStatus = $resource->getDateStatus($_); |
my $dateStatus = $resource->getDateStatus($_); |
| my $completionStatus = $resource->getCompletionStatus($_); |
my $completionStatus = $resource->getCompletionStatus($_); |
| |
|
| |
or |
| |
|
| |
my $status = $resource->status($_); |
| |
|
| ... use it here ... |
... use it here ... |
| } |
} |
| |
|
| |
Which you use depends on exactly what you are looking for. The status() function has been optimized for the nav maps display and may not precisely match what you need elsewhere. |
| |
|
| |
The symbolic constants shown below can be accessed through the resource object: $res->OPEN. |
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * B<getDateStatus>($part): ($part defaults to 0). A convenience function that returns a symbolic constant telling you about the date status of the part, with the following possible results: |
=item * B<getDateStatus>($part): ($part defaults to 0). A convenience function that returns a symbolic constant telling you about the date status of the part. The possible return values are: |
| |
|
| =back |
=back |
| |
|
|
Line 2027 B<Date Codes>
|
Line 2770 B<Date Codes>
|
| |
|
| =item * B<OPEN>: Open and not yet due. |
=item * B<OPEN>: Open and not yet due. |
| |
|
| |
|
| =item * B<PAST_DUE_ANSWER_LATER>: The due date has passed, but the answer date has not yet arrived. |
=item * B<PAST_DUE_ANSWER_LATER>: The due date has passed, but the answer date has not yet arrived. |
| |
|
| =item * B<PAST_DUE_NO_ANSWER>: The due date has passed and there is no answer opening date set. |
=item * B<PAST_DUE_NO_ANSWER>: The due date has passed and there is no answer opening date set. |
|
Line 2074 sub getDateStatus {
|
Line 2818 sub getDateStatus {
|
| # should this be the same as "open later"? think multipart. |
# should this be the same as "open later"? think multipart. |
| return $self->NOTHING_SET; |
return $self->NOTHING_SET; |
| } |
} |
| if (!$open || $now < $open) {return $self->OPEN_LATER}; |
if (!$open || $now < $open) {return $self->OPEN_LATER} |
| if (!$due || $now < $due) {return $self->OPEN}; |
if (!$due || $now < $due) {return $self->OPEN} |
| if ($answer && $now < $answer) {return $self->PAST_DUE_ANSWER_LATER}; |
if ($answer && $now < $answer) {return $self->PAST_DUE_ANSWER_LATER} |
| if ($answer) { return $self->ANSWER_OPEN; }; |
if ($answer) { return $self->ANSWER_OPEN; } |
| return PAST_DUE_NO_ANSWER; |
return PAST_DUE_NO_ANSWER; |
| } |
} |
| |
|
|
Line 2109 B<Completion Codes>
|
Line 2853 B<Completion Codes>
|
| |
|
| =item * B<NETWORK_FAILURE>: Information not available due to network failure. |
=item * B<NETWORK_FAILURE>: Information not available due to network failure. |
| |
|
| |
=item * B<ATTEMPTED>: Attempted, and not yet graded. |
| |
|
| =back |
=back |
| |
|
| =cut |
=cut |
|
Line 2119 sub INCORRECT_BY_OVERRIDE { return 12; }
|
Line 2865 sub INCORRECT_BY_OVERRIDE { return 12; }
|
| sub CORRECT { return 13; } |
sub CORRECT { return 13; } |
| sub CORRECT_BY_OVERRIDE { return 14; } |
sub CORRECT_BY_OVERRIDE { return 14; } |
| sub EXCUSED { return 15; } |
sub EXCUSED { return 15; } |
| |
sub ATTEMPTED { return 16; } |
| |
|
| sub getCompletionStatus { |
sub getCompletionStatus { |
| my $self = shift; |
my $self = shift; |
| my $part = shift; |
|
| $part = "0" if (!defined($part)); |
|
| return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| # Make sure return hash exists |
my $status = $self->queryRestoreHash('solved', shift); |
| $self->getReturnHash(); |
|
| |
|
| my $status = $self->{RETURN_HASH}->{'resource.'.$part.'.solved'}; |
|
| |
|
| # Left as seperate if statements in case we ever do more with this |
# Left as seperate if statements in case we ever do more with this |
| if ($status eq 'correct_by_student') {return $self->CORRECT;} |
if ($status eq 'correct_by_student') {return $self->CORRECT;} |
|
Line 2137 sub getCompletionStatus {
|
Line 2879 sub getCompletionStatus {
|
| if ($status eq 'incorrect_attempted') {return $self->INCORRECT; } |
if ($status eq 'incorrect_attempted') {return $self->INCORRECT; } |
| if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; } |
if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; } |
| if ($status eq 'excused') {return $self->EXCUSED; } |
if ($status eq 'excused') {return $self->EXCUSED; } |
| |
if ($status eq 'ungraded_attempted') {return $self->ATTEMPTED; } |
| return $self->NOT_ATTEMPTED; |
return $self->NOT_ATTEMPTED; |
| } |
} |
| |
|
| |
sub queryRestoreHash { |
| |
my $self = shift; |
| |
my $hashentry = shift; |
| |
my $part = shift; |
| |
$part = "0" if (!defined($part)); |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
$self->getReturnHash(); |
| |
|
| |
return $self->{RETURN_HASH}->{'resource.'.$part.'.'.$hashentry}; |
| |
} |
| |
|
| =pod |
=pod |
| |
|
| B<Composite Status> |
B<Composite Status> |
| |
|
| Along with directly returning the date or completion status, the resource object includes a convenience function B<status>() that will combine the two status tidbits into one composite status that can represent the status of the resource as a whole. The precise logic is documented in the comments of the status method. The following results may be returned, all available as methods on the resource object ($res->NETWORK_FAILURE()): |
Along with directly returning the date or completion status, the resource object includes a convenience function B<status>() that will combine the two status tidbits into one composite status that can represent the status of the resource as a whole. The precise logic is documented in the comments of the status method. The following results may be returned, all available as methods on the resource object ($res->NETWORK_FAILURE): |
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * NETWORK_FAILURE: The network has failed and the information is not available. |
=item * B<NETWORK_FAILURE>: The network has failed and the information is not available. |
| |
|
| =item * NOTHING_SET: No dates have been set for this problem (part) at all. (Because only certain parts of a multi-part problem may be assigned, this can not be collapsed into "open later", as we don't know a given part will EVER be opened.) |
=item * B<NOTHING_SET>: No dates have been set for this problem (part) at all. (Because only certain parts of a multi-part problem may be assigned, this can not be collapsed into "open later", as we don't know a given part will EVER be opened. For single part, this is the same as "OPEN_LATER".) |
| |
|
| =item * CORRECT: For any reason at all, the part is considered correct. |
=item * B<CORRECT>: For any reason at all, the part is considered correct. |
| |
|
| =item * EXCUSED: For any reason at all, the problem is excused. |
=item * B<EXCUSED>: For any reason at all, the problem is excused. |
| |
|
| =item * PAST_DUE_NO_ANSWER: The problem is past due, not considered correct, and no answer date is set. |
=item * B<PAST_DUE_NO_ANSWER>: The problem is past due, not considered correct, and no answer date is set. |
| |
|
| =item * PAST_DUE_ANSWER_LATER: The problem is past due, not considered correct, and an answer date in the future is set. |
=item * B<PAST_DUE_ANSWER_LATER>: The problem is past due, not considered correct, and an answer date in the future is set. |
| |
|
| =item * ANSWER_OPEN: The problem is past due, not correct, and the answer is now available. |
=item * B<ANSWER_OPEN>: The problem is past due, not correct, and the answer is now available. |
| |
|
| =item * OPEN_LATER: The problem is not yet open. |
=item * B<OPEN_LATER>: The problem is not yet open. |
| |
|
| =item * TRIES_LEFT: The problem is open, has been tried, is not correct, but there are tries left. |
=item * B<TRIES_LEFT>: The problem is open, has been tried, is not correct, but there are tries left. |
| |
|
| =item * INCORRECT: The problem is open, and all tries have been used without getting the correct answer. |
=item * B<INCORRECT>: The problem is open, and all tries have been used without getting the correct answer. |
| |
|
| =item * OPEN: The item is open and not yet tried. |
=item * B<OPEN>: The item is open and not yet tried. |
| |
|
| |
=item * B<ATTEMPTED>: The problem has been attempted. |
| |
|
| =back |
=back |
| |
|
|
Line 2192 sub status {
|
Line 2949 sub status {
|
| # There are a few whole rows we can dispose of: |
# There are a few whole rows we can dispose of: |
| if ($completionStatus == CORRECT || |
if ($completionStatus == CORRECT || |
| $completionStatus == CORRECT_BY_OVERRIDE ) { |
$completionStatus == CORRECT_BY_OVERRIDE ) { |
| return CORRECT(); |
return CORRECT; |
| |
} |
| |
|
| |
if ($completionStatus == ATTEMPTED) { |
| |
return ATTEMPTED; |
| } |
} |
| |
|
| # If it's EXCUSED, then return that no matter what |
# If it's EXCUSED, then return that no matter what |
|
Line 2204 sub status {
|
Line 2965 sub status {
|
| return NOTHING_SET; |
return NOTHING_SET; |
| } |
} |
| |
|
| # Now we're down to a 3 (incorrect, incorrect_override, not_attempted) |
# Now we're down to a 4 (incorrect, incorrect_override, not_attempted) |
| # by 4 matrix (date status). |
# by 4 matrix (date statuses). |
| |
|
| if ($dateStatus == PAST_DUE_ANSWER_LATER || |
if ($dateStatus == PAST_DUE_ANSWER_LATER || |
| $dateStatus == PAST_DUE_NO_ANSWER) { |
$dateStatus == PAST_DUE_NO_ANSWER ) { |
| return $dateStatus; |
return $dateStatus; |
| } |
} |
| |
|
|
Line 2226 sub status {
|
Line 2987 sub status {
|
| # If it's WRONG... |
# If it's WRONG... |
| if ($completionStatus == INCORRECT || $completionStatus == INCORRECT_BY_OVERRIDE) { |
if ($completionStatus == INCORRECT || $completionStatus == INCORRECT_BY_OVERRIDE) { |
| # and there are TRIES LEFT: |
# and there are TRIES LEFT: |
| if ($self->tries() < $self->maxtries()) { |
if ($self->tries($part) < $self->maxtries($part) || !$self->maxtries($part)) { |
| return TRIES_LEFT; |
return TRIES_LEFT; |
| } |
} |
| return INCORRECT; # otherwise, return orange; student can't fix this |
return INCORRECT; # otherwise, return orange; student can't fix this |
|
Line 2242 sub status {
|
Line 3003 sub status {
|
| |
|
| =over 4 |
=over 4 |
| |
|
| =item * B<getNext>(): Gets the next resource in the navmap after this one. |
=item * B<getNext>(): Retreive an array of the possible next resources after this one. Always returns an array, even in the one- or zero-element case. |
| |
|
| =cut |
=item * B<getPrevious>(): Retreive an array of the possible previous resources from this one. Always returns an array, even in the one- or zero-element case. |
| |
|
| # For the simple single-link case, to get from a resource to the next |
=cut |
| # resource, you need to look up the "to_" link in the nav hash, then |
|
| # follow that with the "goesto_" link. |
|
| |
|
| sub getNext { |
sub getNext { |
| my $self = shift; |
my $self = shift; |
| my $alreadySeenHash = shift; |
|
| my @branches; |
my @branches; |
| my $to = $self->to(); |
my $to = $self->to(); |
| foreach my $branch ( split(/\,/, $to) ) { |
foreach my $branch ( split(/,/, $to) ) { |
| my $choice = $self->{NAV_MAP}->getById($branch); |
my $choice = $self->{NAV_MAP}->getById($branch); |
| my $next = $choice->goesto(); |
my $next = $choice->goesto(); |
| $next = $self->{NAV_MAP}->getById($next); |
$next = $self->{NAV_MAP}->getById($next); |
| |
|
| # Don't remember it if we've already seen it |
push @branches, $next; |
| if (!defined($alreadySeenHash) || |
|
| !defined($alreadySeenHash->{$next->{ID}})) { |
|
| push @branches, $next; |
|
| } |
|
| } |
} |
| return \@branches; |
return \@branches; |
| } |
} |
| |
|
| |
sub getPrevious { |
| |
my $self = shift; |
| |
my @branches; |
| |
my $from = $self->from(); |
| |
foreach my $branch ( split /,/, $from) { |
| |
my $choice = $self->{NAV_MAP}->getById($branch); |
| |
my $prev = $choice->comesfrom(); |
| |
$prev = $self->{NAV_MAP}->getById($prev); |
| |
|
| |
push @branches, $prev; |
| |
} |
| |
return \@branches; |
| |
} |
| |
|
| |
sub browsePriv { |
| |
my $self = shift; |
| |
if (defined($self->{BROWSE_PRIV})) { |
| |
return $self->{BROWSE_PRIV}; |
| |
} |
| |
|
| |
$self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre', $self->src()); |
| |
} |
| |
|
| =pod |
=pod |
| |
|
| =back |
=back |
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