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Revision 5422 - (download) (as text) (annotate)
Sat Aug 25 18:25:30 2007 UTC (5 years, 9 months ago) by sh002i
File size: 48506 byte(s)
backport (sh002i): ignore .svn directories in problem libraries
(%ignoredir)

    1 ################################################################################
    2 # WeBWorK Online Homework Delivery System
    3 # Copyright © 2000-2007 The WeBWorK Project, http://openwebwork.sf.net/
    4 # $CVSHeader$
    5 #
    6 # This program is free software; you can redistribute it and/or modify it under
    7 # the terms of either: (a) the GNU General Public License as published by the
    8 # Free Software Foundation; either version 2, or (at your option) any later
    9 # version, or (b) the "Artistic License" which comes with this package.
   10 #
   11 # This program is distributed in the hope that it will be useful, but WITHOUT
   12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   13 # FOR A PARTICULAR PURPOSE.  See either the GNU General Public License or the
   14 # Artistic License for more details.
   15 ################################################################################
   16 
   17 
   18 package WeBWorK::ContentGenerator::Instructor::SetMaker;
   19 use base qw(WeBWorK::ContentGenerator::Instructor);
   20 
   21 =head1 NAME
   22 
   23 WeBWorK::ContentGenerator::Instructor::SetMaker - Make homework sets.
   24 
   25 =cut
   26 
   27 use strict;
   28 use warnings;
   29 
   30 
   31 #use CGI qw(-nosticky);
   32 use WeBWorK::CGI;
   33 use WeBWorK::Debug;
   34 use WeBWorK::Form;
   35 use WeBWorK::Utils qw(readDirectory max sortByName);
   36 use WeBWorK::Utils::Tasks qw(renderProblems);
   37 use File::Find;
   38 
   39 require WeBWorK::Utils::ListingDB;
   40 
   41 use constant MAX_SHOW_DEFAULT => 20;
   42 use constant NO_LOCAL_SET_STRING => 'No sets in this course yet';
   43 use constant SELECT_SET_STRING => 'Select a Set from this Course';
   44 use constant SELECT_LOCAL_STRING => 'Select a Problem Collection';
   45 use constant MY_PROBLEMS => '  My Problems  ';
   46 use constant MAIN_PROBLEMS => '  Unclassified Problems  ';
   47 use constant CREATE_SET_BUTTON => 'Create New Set';
   48 use constant ALL_CHAPTERS => 'All Chapters';
   49 use constant ALL_SUBJECTS => 'All Subjects';
   50 use constant ALL_SECTIONS => 'All Sections';
   51 use constant ALL_TEXTBOOKS => 'All Textbooks';
   52 
   53 use constant LIB2_DATA => {
   54   'dbchapter' => {name => 'library_chapters', all => 'All Chapters'},
   55   'dbsection' =>  {name => 'library_sections', all =>'All Sections' },
   56   'dbsubject' =>  {name => 'library_subjects', all => 'All Subjects' },
   57   'textbook' =>  {name => 'library_textbook', all =>  'All Textbooks'},
   58   'textchapter' => {name => 'library_textchapter', all => 'All Chapters'},
   59   'textsection' => {name => 'library_textsection', all => 'All Sections'},
   60   'keywords' =>  {name => 'library_keywords', all => '' },
   61   };
   62 
   63 ## Flags for operations on files
   64 
   65 use constant ADDED => 1;
   66 use constant HIDDEN => (1 << 1);
   67 use constant SUCCESS => (1 << 2);
   68 
   69 ##  for additional problib buttons
   70 my %problib;  ## filled in in global.conf
   71 my %ignoredir = (
   72   '.' => 1, '..' => 1, 'Library' => 1, 'CVS' => 1, 'tmpEdit' => 1,
   73   'headers' => 1, 'macros' => 1, 'email' => 1, '.svn' => 1,
   74 );
   75 
   76 sub prepare_activity_entry {
   77   my $self=shift;
   78   my $r = $self->r;
   79   my $user = $self->r->param('user') || 'NO_USER';
   80   return("In SetMaker as user $user");
   81 }
   82 
   83 ## This is for searching the disk for directories containing pg files.
   84 ## to make the recursion work, this returns an array where the first
   85 ## item is the number of pg files in the directory.  The second is a
   86 ## list of directories which contain pg files.
   87 ##
   88 ## If a directory contains only one pg file and the directory name
   89 ## is the same as the file name, then the directory is considered
   90 ## to be part of the parent directory (it is probably in a separate
   91 ## directory only because it has auxiliary files that want to be
   92 ## kept together with the pg file).
   93 ##
   94 ## If a directory has a file named "=library-ignore", it is never
   95 ## included in the directory menu.  If a directory contains a file
   96 ## called "=library-combine-up", then its pg are included with those
   97 ## in the parent directory (and the directory does not appear in the
   98 ## menu).  If it has a file called "=library-no-combine" then it is
   99 ## always listed as a separate directory even if it contains only one
  100 ## pg file.
  101 
  102 sub get_library_sets {
  103   my $top = shift; my $dir = shift;
  104   # ignore directories that give us an error
  105   my @lis = eval { readDirectory($dir) };
  106   if ($@) {
  107     warn $@;
  108     return (0);
  109   }
  110   return (0) if grep /^=library-ignore$/, @lis;
  111 
  112   my @pgfiles = grep { m/\.pg$/ and (not m/(Header|-text)\.pg$/) and -f "$dir/$_"} @lis;
  113   my $pgcount = scalar(@pgfiles);
  114   my $pgname = $dir; $pgname =~ s!.*/!!; $pgname .= '.pg';
  115   my $combineUp = ($pgcount == 1 && $pgname eq $pgfiles[0] && !(grep /^=library-no-combine$/, @lis));
  116 
  117   my @pgdirs;
  118   my @dirs = grep {!$ignoredir{$_} and -d "$dir/$_"} @lis;
  119   if ($top == 1) {@dirs = grep {!$problib{$_}} @dirs}
  120   foreach my $subdir (@dirs) {
  121     my @results = get_library_sets(0, "$dir/$subdir");
  122     $pgcount += shift @results; push(@pgdirs,@results);
  123   }
  124 
  125   return ($pgcount, @pgdirs) if $top || $combineUp || grep /^=library-combine-up$/, @lis;
  126   return (0,@pgdirs,$dir);
  127 }
  128 
  129 sub get_library_pgs {
  130   my $top = shift; my $base = shift; my $dir = shift;
  131   my @lis = readDirectory("$base/$dir");
  132   return () if grep /^=library-ignore$/, @lis;
  133   return () if !$top && grep /^=library-no-combine$/, @lis;
  134 
  135   my @pgs = grep { m/\.pg$/ and (not m/(Header|-text)\.pg$/) and -f "$base/$dir/$_"} @lis;
  136   my $others = scalar(grep { (!m/\.pg$/ || m/(Header|-text)\.pg$/) &&
  137                               !m/(\.(tmp|bak)|~)$/ && -f "$base/$dir/$_" } @lis);
  138 
  139   my @dirs = grep {!$ignoredir{$_} and -d "$base/$dir/$_"} @lis;
  140   if ($top == 1) {@dirs = grep {!$problib{$_}} @dirs}
  141   foreach my $subdir (@dirs) {push(@pgs, get_library_pgs(0,"$base/$dir",$subdir))}
  142 
  143   return () unless $top || (scalar(@pgs) == 1 && $others) || grep /^=library-combine-up$/, @lis;
  144   return (map {"$dir/$_"} @pgs);
  145 }
  146 
  147 sub list_pg_files {
  148   my ($templates,$dir) = @_;
  149   my $top = ($dir eq '.')? 1 : 2;
  150   my @pgs = get_library_pgs($top,$templates,$dir);
  151   return sortByName(undef,@pgs);
  152 }
  153 
  154 ## Search for set definition files
  155 
  156 sub get_set_defs {
  157   my $topdir = shift;
  158   my @found_set_defs;
  159   # get_set_defs_wanted is a closure over @found_set_defs
  160   my $get_set_defs_wanted = sub {
  161     #my $fn = $_;
  162     #my $fdir = $File::Find::dir;
  163     #return() if($fn !~ /^set.*\.def$/);
  164     ##return() if(not -T $fn);
  165     #push @found_set_defs, "$fdir/$fn";
  166     push @found_set_defs, $_ if m|/set[^/]*\.def$|;
  167   };
  168   find({ wanted => $get_set_defs_wanted, follow_fast=>1, no_chdir=>1}, $topdir);
  169   map { $_ =~ s|^$topdir/?|| } @found_set_defs;
  170   return @found_set_defs;
  171 }
  172 
  173 ## Try to make reading of set defs more flexible.  Additional strategies
  174 ## for fixing a path can be added here.
  175 
  176 sub munge_pg_file_path {
  177   my $self = shift;
  178   my $pg_path = shift;
  179   my $path_to_set_def = shift;
  180   my $end_path = $pg_path;
  181   # if the path is ok, don't fix it
  182   return($pg_path) if(-e $self->r->ce->{courseDirs}{templates}."/$pg_path");
  183   # if we have followed a link into a self contained course to get
  184   # to the set.def file, we need to insert the start of the path to
  185   # the set.def file
  186   $end_path = "$path_to_set_def/$pg_path";
  187   return($end_path) if(-e $self->r->ce->{courseDirs}{templates}."/$end_path");
  188   # if we got this far, this path is bad, but we let it produce
  189   # an error so the user knows there is a troublesome path in the
  190   # set.def file.
  191   return($pg_path);
  192 }
  193 
  194 ## Read a set definition file.  This could be abstracted since it happens
  195 ## elsewhere.  Here we don't have to process so much of the file.
  196 
  197 sub read_set_def {
  198   my $self = shift;
  199   my $r = $self->r;
  200   my $filePathOrig = shift;
  201   my $filePath = $r->ce->{courseDirs}{templates}."/$filePathOrig";
  202   $filePathOrig =~ s/set.*\.def$//;
  203   $filePathOrig =~ s|/$||;
  204   $filePathOrig = "." if ($filePathOrig !~ /\S/);
  205   my @pg_files = ();
  206   my ($line, $got_to_pgs, $name, @rest) = ("", 0, "");
  207   if ( open (SETFILENAME, "$filePath") )    {
  208     while($line = <SETFILENAME>) {
  209       chomp($line);
  210       $line =~ s|(#.*)||; # don't read past comments
  211       if($got_to_pgs) {
  212         unless ($line =~ /\S/) {next;} # skip blank lines
  213         ($name,@rest) = split (/\s*,\s*/,$line);
  214         $name =~ s/\s*//g;
  215         push @pg_files, $name;
  216       } else {
  217         $got_to_pgs = 1 if ($line =~ /problemList\s*=/);
  218       }
  219     }
  220   } else {
  221     $self->addbadmessage("Cannot open $filePath");
  222   }
  223   # This is where we would potentially munge the pg file paths
  224   # One possibility
  225   @pg_files = map { $self->munge_pg_file_path($_, $filePathOrig) } @pg_files;
  226   return(@pg_files);
  227 }
  228 
  229 ## go through past page getting a list of identifiers for the problems
  230 ## and whether or not they are selected, and whether or not they should
  231 ## be hidden
  232 
  233 sub get_past_problem_files {
  234   my $r = shift;
  235   my @found=();
  236   my $count =1;
  237   while (defined($r->param("filetrial$count"))) {
  238     my $val = 0;
  239     $val |= ADDED if($r->param("trial$count"));
  240     $val |= HIDDEN if($r->param("hideme$count"));
  241     push @found, [$r->param("filetrial$count"), $val];
  242     $count++;
  243   }
  244   return(\@found);
  245 }
  246 
  247 #### For adding new problems
  248 
  249 sub add_selected {
  250   my $self = shift;
  251   my $db = shift;
  252   my $setName = shift;
  253   my @past_problems = @{$self->{past_problems}};
  254   my @selected = @past_problems;
  255   my (@path, $file, $selected, $freeProblemID);
  256   # DBFIXME count would work just as well
  257   $freeProblemID = max($db->listGlobalProblems($setName)) + 1;
  258   my $addedcount=0;
  259 
  260   for $selected (@selected) {
  261     if($selected->[1] & ADDED) {
  262       $file = $selected->[0];
  263       my $problemRecord = $self->addProblemToSet(setName => $setName,
  264         sourceFile => $file, problemID => $freeProblemID);
  265       $freeProblemID++;
  266       $self->assignProblemToAllSetUsers($problemRecord);
  267       $selected->[1] |= SUCCESS;
  268       $addedcount++;
  269     }
  270   }
  271   return($addedcount);
  272 }
  273 
  274 
  275 ############# List of sets of problems in templates directory
  276 
  277 sub get_problem_directories {
  278   my $ce = shift;
  279   my $lib = shift;
  280   my $source = $ce->{courseDirs}{templates};
  281   my $main = MY_PROBLEMS; my $isTop = 1;
  282   if ($lib) {$source .= "/$lib"; $main = MAIN_PROBLEMS; $isTop = 2}
  283   my @all_problem_directories = get_library_sets($isTop, $source);
  284   my $includetop = shift @all_problem_directories;
  285   my $j;
  286   for ($j=0; $j<scalar(@all_problem_directories); $j++) {
  287     $all_problem_directories[$j] =~ s|^$ce->{courseDirs}->{templates}/?||;
  288   }
  289   @all_problem_directories = sortByName(undef, @all_problem_directories);
  290   unshift @all_problem_directories, $main if($includetop);
  291   return (\@all_problem_directories);
  292 }
  293 
  294 ############# Everyone has a view problems line.  Abstract it
  295 sub view_problems_line {
  296   my $internal_name = shift;
  297   my $label = shift;
  298   my $r = shift; # so we can get parameter values
  299   my $result = CGI::submit(-name=>"$internal_name", -value=>$label);
  300 
  301   my %display_modes = %{WeBWorK::PG::DISPLAY_MODES()};
  302   my @active_modes = grep { exists $display_modes{$_} }
  303     @{$r->ce->{pg}->{displayModes}};
  304   push @active_modes, 'None';
  305   # We have our own displayMode since its value may be None, which is illegal
  306   # in other modules.
  307   my $mydisplayMode = $r->param('mydisplayMode') || $r->ce->{pg}->{options}->{displayMode};
  308   $result .= '&nbsp;Display&nbsp;Mode:&nbsp;'.CGI::popup_menu(-name=> 'mydisplayMode',
  309                                                               -values=>\@active_modes,
  310                                                               -default=> $mydisplayMode);
  311   # Now we give a choice of the number of problems to show
  312   my $defaultMax = $r->param('max_shown') || MAX_SHOW_DEFAULT;
  313   $result .= '&nbsp;Max. Shown:&nbsp'.
  314     CGI::popup_menu(-name=> 'max_shown',
  315                     -values=>[5,10,15,20,25,30,50,'All'],
  316                     -default=> $defaultMax);
  317 
  318   return($result);
  319 }
  320 
  321 
  322 ### The browsing panel has three versions
  323 #####  Version 1 is local problems
  324 sub browse_local_panel {
  325   my $self = shift;
  326   my $library_selected = shift;
  327   my $lib = shift || ''; $lib =~ s/^browse_//;
  328   my $name = ($lib eq '')? 'Local' : $problib{$lib};
  329 
  330   my $list_of_prob_dirs= get_problem_directories($self->r->ce,$lib);
  331   if(scalar(@$list_of_prob_dirs) == 0) {
  332     $library_selected = "Found no directories containing problems";
  333     unshift @{$list_of_prob_dirs}, $library_selected;
  334   } else {
  335     my $default_value = SELECT_LOCAL_STRING;
  336     if (not $library_selected or $library_selected eq $default_value) {
  337       unshift @{$list_of_prob_dirs},  $default_value;
  338       $library_selected = $default_value;
  339     }
  340   }
  341   debug("library is $lib and sets are $library_selected");
  342   my $view_problem_line = view_problems_line('view_local_set', 'View Problems', $self->r);
  343   print CGI::Tr({}, CGI::td({-class=>"InfoPanel", -align=>"left"}, "$name Problems: ",
  344                   CGI::popup_menu(-name=> 'library_sets',
  345                     -values=>$list_of_prob_dirs,
  346                     -default=> $library_selected),
  347                   CGI::br(),
  348                   $view_problem_line,
  349   ));
  350 }
  351 
  352 #####  Version 2 is local homework sets
  353 sub browse_mysets_panel {
  354   my $self = shift;
  355   my $library_selected = shift;
  356   my $list_of_local_sets = shift;
  357   my $default_value = "Select a Homework Set";
  358 
  359   if(scalar(@$list_of_local_sets) == 0) {
  360     $list_of_local_sets = [NO_LOCAL_SET_STRING];
  361   } elsif (not $library_selected or $library_selected eq $default_value) {
  362     unshift @{$list_of_local_sets},  $default_value;
  363     $library_selected = $default_value;
  364   }
  365 
  366   my $view_problem_line = view_problems_line('view_mysets_set', 'View Problems', $self->r);
  367   print CGI::Tr({},
  368     CGI::td({-class=>"InfoPanel", -align=>"left"}, "Browse from: ",
  369     CGI::popup_menu(-name=> 'library_sets',
  370                     -values=>$list_of_local_sets,
  371                     -default=> $library_selected),
  372     CGI::br(),
  373     $view_problem_line
  374   ));
  375 }
  376 
  377 #####  Version 3 is the problem library
  378 #
  379 # This comes in 3 forms, problem library version 1, and for version 2 there
  380 # is the basic, and the advanced interfaces.  This function checks what we are
  381 # supposed to do, or aborts if the problem library has not been installed.
  382 
  383 sub browse_library_panel {
  384   my $self=shift;
  385   my $r = $self->r;
  386   my $ce = $r->ce;
  387 
  388   # See if the problem library is installed
  389   my $libraryRoot = $r->{ce}->{problemLibrary}->{root};
  390 
  391   unless($libraryRoot) {
  392     print CGI::Tr(CGI::td(CGI::div({class=>'ResultsWithError', align=>"center"},
  393       "The problem library has not been installed.")));
  394     return;
  395   }
  396   # Test if the Library directory link exists.  If not, try to make it
  397   unless(-d "$ce->{courseDirs}->{templates}/Library") {
  398     unless(symlink($libraryRoot, "$ce->{courseDirs}->{templates}/Library")) {
  399       my $msg =  <<"HERE";
  400 You are missing the directory <code>templates/Library</code>, which is needed
  401 for the Problem Library to function.  It should be a link pointing to
  402 <code>$libraryRoot</code>, which you set in <code>conf/global.conf</code>.
  403 I tried to make the link for you, but that failed.  Check the permissions
  404 in your <code>templates</code> directory.
  405 HERE
  406       $self->addbadmessage($msg);
  407     }
  408   }
  409 
  410   # Now check what version we are supposed to use
  411   my $libraryVersion = $r->{ce}->{problemLibrary}->{version} || 1;
  412   if($libraryVersion == 1) {
  413     return $self->browse_library_panel1;
  414   } elsif($libraryVersion == 2) {
  415     return $self->browse_library_panel2 if($self->{library_basic}==1);
  416     return $self->browse_library_panel2adv;
  417   } else {
  418     print CGI::Tr(CGI::td(CGI::div({class=>'ResultsWithError', align=>"center"},
  419       "The problem library version is set to an illegal value.")));
  420     return;
  421   }
  422 }
  423 
  424 sub browse_library_panel1 {
  425   my $self = shift;
  426   my $r = $self->r;
  427   my $ce = $r->ce;
  428 
  429   my @chaps = WeBWorK::Utils::ListingDB::getAllChapters($r->{ce});
  430   unshift @chaps, LIB2_DATA->{dbchapter}{all};
  431   my $chapter_selected = $r->param('library_chapters') || LIB2_DATA->{dbchapter}->{all};
  432 
  433   my @sects=();
  434   if ($chapter_selected ne LIB2_DATA->{dbchapter}{all}) {
  435     @sects = WeBWorK::Utils::ListingDB::getAllSections($r->{ce}, $chapter_selected);
  436   }
  437 
  438   unshift @sects, ALL_SECTIONS;
  439   my $section_selected =  $r->param('library_sections') || LIB2_DATA->{dbsection}{all};
  440 
  441   my $view_problem_line = view_problems_line('lib_view', 'View Problems', $self->r);
  442 
  443   print CGI::Tr(CGI::td({-class=>"InfoPanel", -align=>"left"},
  444     CGI::start_table(),
  445       CGI::Tr({},
  446         CGI::td(["Chapter:",
  447           CGI::popup_menu(-name=> 'library_chapters',
  448                           -values=>\@chaps,
  449                           -default=> $chapter_selected,
  450                           -onchange=>"submit();return true"
  451           ),
  452           CGI::submit(-name=>"lib_select_chapter", -value=>"Update Section List")])),
  453       CGI::Tr({},
  454         CGI::td("Section:"),
  455         CGI::td({-colspan=>2},
  456           CGI::popup_menu(-name=> 'library_sections',
  457                           -values=>\@sects,
  458                           -default=> $section_selected
  459       ))),
  460 
  461       CGI::Tr(CGI::td({-colspan=>3}, $view_problem_line)),
  462       CGI::end_table(),
  463     ));
  464 }
  465 
  466 sub browse_library_panel2 {
  467   my $self = shift;
  468   my $r = $self->r;
  469   my $ce = $r->ce;
  470 
  471   my @subjs = WeBWorK::Utils::ListingDB::getAllDBsubjects($r);
  472   unshift @subjs, LIB2_DATA->{dbsubject}{all};
  473 
  474   my @chaps = WeBWorK::Utils::ListingDB::getAllDBchapters($r);
  475   unshift @chaps, LIB2_DATA->{dbchapter}{all};
  476 
  477   my @sects=();
  478   @sects = WeBWorK::Utils::ListingDB::getAllDBsections($r);
  479   unshift @sects, LIB2_DATA->{dbsection}{all};
  480 
  481   my $subject_selected = $r->param('library_subjects') || LIB2_DATA->{dbsubject}{all};
  482   my $chapter_selected = $r->param('library_chapters') || LIB2_DATA->{dbchapter}{all};
  483   my $section_selected =  $r->param('library_sections') || LIB2_DATA->{dbsection}{all};
  484 
  485   my $view_problem_line = view_problems_line('lib_view', 'View Problems', $self->r);
  486 
  487   my $count_line = WeBWorK::Utils::ListingDB::countDBListings($r);
  488   if($count_line==0) {
  489     $count_line = "There are no matching pg files";
  490   } else {
  491     $count_line = "There are $count_line matching WeBWorK problem files";
  492   }
  493 
  494   print CGI::Tr({},
  495       CGI::td({-class=>"InfoPanel", -align=>"left"},
  496     CGI::hidden(-name=>"library_is_basic", -default=>1,-override=>1),
  497     CGI::start_table({-width=>"100%"}),
  498     CGI::Tr({},
  499       CGI::td(["Subject:",
  500         CGI::popup_menu(-name=> 'library_subjects',
  501                       -values=>\@subjs,
  502                       -default=> $subject_selected,
  503                        -onchange=>"submit();return true"
  504         )]),
  505       CGI::td({-colspan=>2, -align=>"right"},
  506         CGI::submit(-name=>"lib_select_subject", -value=>"Update Chapter/Section Lists"))
  507     ),
  508     CGI::Tr({},
  509       CGI::td(["Chapter:",
  510         CGI::popup_menu(-name=> 'library_chapters',
  511                       -values=>\@chaps,
  512                       -default=> $chapter_selected,
  513                        -onchange=>"submit();return true"
  514         )]),
  515       CGI::td({-colspan=>2, -align=>"right"},
  516           CGI::submit(-name=>"library_advanced", -value=>"Advanced Search"))
  517     ),
  518     CGI::Tr({},
  519       CGI::td(["Section:",
  520       CGI::popup_menu(-name=> 'library_sections',
  521                   -values=>\@sects,
  522                   -default=> $section_selected,
  523               -onchange=>"submit();return true"
  524         )]),
  525      ),
  526      CGI::Tr(CGI::td({-colspan=>3}, $view_problem_line)),
  527      CGI::Tr(CGI::td({-colspan=>3, -align=>"center"}, $count_line)),
  528      CGI::end_table(),
  529    ));
  530 
  531 }
  532 
  533 sub browse_library_panel2adv {
  534   my $self = shift;
  535   my $r = $self->r;
  536   my $ce = $r->ce;
  537   my $right_button_style = "width: 18ex";
  538 
  539   my @subjs = WeBWorK::Utils::ListingDB::getAllDBsubjects($r);
  540   if(! grep { $_ eq $r->param('library_subjects') } @subjs) {
  541     $r->param('library_subjects', '');
  542   }
  543   unshift @subjs, LIB2_DATA->{dbsubject}{all};
  544 
  545   my @chaps = WeBWorK::Utils::ListingDB::getAllDBchapters($r);
  546   if(! grep { $_ eq $r->param('library_chapters') } @chaps) {
  547     $r->param('library_chapters', '');
  548   }
  549   unshift @chaps, LIB2_DATA->{dbchapter}{all};
  550 
  551   my @sects = WeBWorK::Utils::ListingDB::getAllDBsections($r);
  552   if(! grep { $_ eq $r->param('library_sections') } @sects) {
  553     $r->param('library_sections', '');
  554   }
  555   unshift @sects, LIB2_DATA->{dbsection}{all};
  556 
  557   my $texts = WeBWorK::Utils::ListingDB::getDBTextbooks($r);
  558   my @textarray = map { $_->[0] }  @{$texts};
  559   my %textlabels = ();
  560   for my $ta (@{$texts}) {
  561     $textlabels{$ta->[0]} = $ta->[1]." by ".$ta->[2]." (edition ".$ta->[3].")";
  562   }
  563   if(! grep { $_ eq $r->param('library_textbook') } @textarray) {
  564     $r->param('library_textbook', '');
  565   }
  566   unshift @textarray, LIB2_DATA->{textbook}{all};
  567   my $atb = LIB2_DATA->{textbook}{all}; $textlabels{$atb} = LIB2_DATA->{textbook}{all};
  568 
  569   my $textchap_ref = WeBWorK::Utils::ListingDB::getDBTextbooks($r, 'textchapter');
  570   my @textchaps = map { $_->[0] } @{$textchap_ref};
  571   if(! grep { $_ eq $r->param('library_textchapter') } @textchaps) {
  572     $r->param('library_textchapter', '');
  573   }
  574   unshift @textchaps, LIB2_DATA->{textchapter}{all};
  575 
  576   my $textsec_ref = WeBWorK::Utils::ListingDB::getDBTextbooks($r, 'textsection');
  577   my @textsecs = map { $_->[0] } @{$textsec_ref};
  578   if(! grep { $_ eq $r->param('library_textsection') } @textsecs) {
  579     $r->param('library_textsection', '');
  580   }
  581   unshift @textsecs, LIB2_DATA->{textsection}{all};
  582 
  583   my %selected = ();
  584   for my $j (qw( dbsection dbchapter dbsubject textbook textchapter textsection )) {
  585     $selected{$j} = $r->param(LIB2_DATA->{$j}{name}) || LIB2_DATA->{$j}{all};
  586   }
  587 
  588   my $text_popup = CGI::popup_menu(-name => 'library_textbook',
  589                    -values =>\@textarray,
  590                    -labels => \%textlabels,
  591                    -default=>$selected{textbook},
  592                    -onchange=>"submit();return true");
  593 
  594 
  595   my $library_keywords = $r->param('library_keywords') || '';
  596 
  597   my $view_problem_line = view_problems_line('lib_view', 'View Problems', $self->r);
  598 
  599   my $count_line = WeBWorK::Utils::ListingDB::countDBListings($r);
  600   if($count_line==0) {
  601     $count_line = "There are no matching pg files";
  602   } else {
  603     $count_line = "There are $count_line matching WeBWorK problem files";
  604   }
  605 
  606   print CGI::Tr({},
  607     CGI::td({-class=>"InfoPanel", -align=>"left"},
  608     CGI::hidden(-name=>"library_is_basic", -default=>2,-override=>1),
  609     CGI::start_table({-width=>"100%"}),
  610     # Html done by hand since it is temporary
  611     CGI::Tr(CGI::td({-colspan=>4, -align=>"center"}, 'All Selected Constraints Joined by "And"')),
  612     CGI::Tr({},
  613       CGI::td(["Subject:",
  614         CGI::popup_menu(-name=> 'library_subjects',
  615                       -values=>\@subjs,
  616                       -default=> $selected{dbsubject},
  617                        -onchange=>"submit();return true"
  618         )]),
  619       CGI::td({-colspan=>2, -align=>"right"},
  620         CGI::submit(-name=>"lib_select_subject", -value=>"Update Menus",
  621           -style=> $right_button_style))),
  622     CGI::Tr({},
  623       CGI::td(["Chapter:",
  624         CGI::popup_menu(-name=> 'library_chapters',
  625                       -values=>\@chaps,
  626                       -default=> $selected{dbchapter},
  627                        -onchange=>"submit();return true"
  628         )]),
  629       CGI::td({-colspan=>2, -align=>"right"},
  630           CGI::submit(-name=>"library_reset", -value=>"Reset",
  631           -style=>$right_button_style))
  632     ),
  633     CGI::Tr({},
  634       CGI::td(["Section:",
  635       CGI::popup_menu(-name=> 'library_sections',
  636                   -values=>\@sects,
  637                   -default=> $selected{dbsection},
  638               -onchange=>"submit();return true"
  639         )]),
  640       CGI::td({-colspan=>2, -align=>"right"},
  641           CGI::submit(-name=>"library_basic", -value=>"Basic Search",
  642           -style=>$right_button_style))
  643      ),
  644      CGI::Tr({},
  645       CGI::td(["Textbook:", $text_popup]),
  646      ),
  647      CGI::Tr({},
  648       CGI::td(["Text chapter:",
  649       CGI::popup_menu(-name=> 'library_textchapter',
  650                   -values=>\@textchaps,
  651                   -default=> $selected{textchapter},
  652               -onchange=>"submit();return true"
  653         )]),
  654      ),
  655      CGI::Tr({},
  656       CGI::td(["Text section:",
  657       CGI::popup_menu(-name=> 'library_textsection',
  658                   -values=>\@textsecs,
  659                   -default=> $selected{textsection},
  660               -onchange=>"submit();return true"
  661         )]),
  662      ),
  663      CGI::Tr({},
  664          CGI::td("Keywords:"),CGI::td({-colspan=>2},
  665        CGI::textfield(-name=>"library_keywords",
  666               -default=>$library_keywords,
  667               -override=>1,
  668               -size=>40))),
  669      CGI::Tr(CGI::td({-colspan=>3}, $view_problem_line)),
  670      CGI::Tr(CGI::td({-colspan=>3, -align=>"center"}, $count_line)),
  671      CGI::end_table(),
  672    ));
  673 
  674 }
  675 
  676 
  677 #####  Version 4 is the set definition file panel
  678 
  679 sub browse_setdef_panel {
  680   my $self = shift;
  681   my $r = $self->r;
  682   my $ce = $r->ce;
  683   my $library_selected = shift;
  684   my $default_value = "Select a Set Definition File";
  685   # in the following line, the parens after sort are important. if they are
  686   # omitted, sort will interpret get_set_defs as the name of the comparison
  687   # function, and ($ce->{courseDirs}{templates}) as a single element list to
  688   # be sorted. *barf*
  689   my @list_of_set_defs = sort(get_set_defs($ce->{courseDirs}{templates}));
  690   if(scalar(@list_of_set_defs) == 0) {
  691     @list_of_set_defs = (NO_LOCAL_SET_STRING);
  692   } elsif (not $library_selected or $library_selected eq $default_value) {
  693     unshift @list_of_set_defs, $default_value;
  694     $library_selected = $default_value;
  695   }
  696   my $view_problem_line = view_problems_line('view_setdef_set', 'View Problems', $self->r);
  697   my $popupetc = CGI::popup_menu(-name=> 'library_sets',
  698                                 -values=>\@list_of_set_defs,
  699                                 -default=> $library_selected).
  700     CGI::br().  $view_problem_line;
  701   if($list_of_set_defs[0] eq NO_LOCAL_SET_STRING) {
  702     $popupetc = "there are no set definition files in this course to look at."
  703   }
  704   print CGI::Tr(CGI::td({-class=>"InfoPanel", -align=>"left"}, "Browse from: ",
  705     $popupetc
  706   ));
  707 }
  708 
  709 sub make_top_row {
  710   my $self = shift;
  711   my $r = $self->r;
  712   my $ce = $r->ce;
  713   my %data = @_;
  714 
  715   my $list_of_local_sets = $data{all_db_sets};
  716   my $have_local_sets = scalar(@$list_of_local_sets);
  717   my $browse_which = $data{browse_which};
  718   my $library_selected = $self->{current_library_set};
  719   my $set_selected = $r->param('local_sets');
  720   my (@dis1, @dis2, @dis3, @dis4) = ();
  721   @dis1 =  (-disabled=>1) if($browse_which eq 'browse_library');
  722   @dis2 =  (-disabled=>1) if($browse_which eq 'browse_local');
  723   @dis3 =  (-disabled=>1) if($browse_which eq 'browse_mysets');
  724   @dis4 =  (-disabled=>1) if($browse_which eq 'browse_setdefs');
  725 
  726   ##  Make buttons for additional problem libraries
  727   my $libs = '';
  728   foreach my $lib (sort(keys(%problib))) {
  729     $libs .= ' '. CGI::submit(-name=>"browse_$lib", -value=>$problib{$lib},
  730                                  ($browse_which eq "browse_$lib")? (-disabled=>1): ())
  731       if (-d "$ce->{courseDirs}{templates}/$lib");
  732   }
  733   $libs = CGI::br()."or Problems from".$libs if $libs ne '';
  734 
  735   my $these_widths = "width: 23ex";
  736 
  737   if($have_local_sets ==0) {
  738     $list_of_local_sets = [NO_LOCAL_SET_STRING];
  739   } elsif (not defined($set_selected) or $set_selected eq ""
  740     or $set_selected eq SELECT_SET_STRING) {
  741     unshift @{$list_of_local_sets}, SELECT_SET_STRING;
  742     $set_selected = SELECT_SET_STRING;
  743   }
  744   my $myjs = 'document.mainform.selfassign.value=confirm("Should I assign the new set to you now?\nUse OK for yes and Cancel for no.");true;';
  745 
  746   print CGI::Tr(CGI::td({-class=>"InfoPanel", -align=>"left"}, "Add problems to ",
  747     CGI::b("Target Set: "),
  748     CGI::popup_menu(-name=> 'local_sets',
  749             -values=>$list_of_local_sets,
  750             -default=> $set_selected,
  751             -override=>1),
  752     CGI::submit(-name=>"edit_local", -value=>"Edit Target Set"),
  753     CGI::hidden(-name=>"selfassign", -default=>0,-override=>1).
  754     CGI::br(),
  755     CGI::br(),
  756     CGI::submit(-name=>"new_local_set", -value=>"Create a New Set in This Course:",
  757     -onclick=>$myjs
  758     ),
  759     "  ",
  760     CGI::textfield(-name=>"new_set_name",
  761              -default=>"Name for new set here",
  762              -override=>1, -size=>30),
  763   ));
  764 
  765   print CGI::Tr(CGI::td({-bgcolor=>"black"}));
  766 
  767   # Tidy this list up since it is used in two different places
  768   if ($list_of_local_sets->[0] eq SELECT_SET_STRING) {
  769     shift @{$list_of_local_sets};
  770   }
  771 
  772   print CGI::Tr(CGI::td({-class=>"InfoPanel", -align=>"center"},
  773     "Browse ",
  774     CGI::submit(-name=>"browse_library", -value=>"Problem Library", -style=>$these_widths, @dis1),
  775     CGI::submit(-name=>"browse_local", -value=>"Local Problems", -style=>$these_widths, @dis2),
  776     CGI::submit(-name=>"browse_mysets", -value=>"From This Course", -style=>$these_widths, @dis3),
  777     CGI::submit(-name=>"browse_setdefs", -value=>"Set Definition Files", -style=>$these_widths, @dis4),
  778     $libs,
  779   ));
  780 
  781   #print CGI::Tr(CGI::td({-bgcolor=>"black"}));
  782   print CGI::hr();
  783 
  784   if ($browse_which eq 'browse_local') {
  785     $self->browse_local_panel($library_selected);
  786   } elsif ($browse_which eq 'browse_mysets') {
  787     $self->browse_mysets_panel($library_selected, $list_of_local_sets);
  788   } elsif ($browse_which eq 'browse_library') {
  789     $self->browse_library_panel();
  790   } elsif ($browse_which eq 'browse_setdefs') {
  791     $self->browse_setdef_panel($library_selected);
  792   } else { ## handle other problem libraries
  793     $self->browse_local_panel($library_selected,$browse_which);
  794   }
  795 
  796   print CGI::Tr(CGI::td({-bgcolor=>"black"}));
  797 
  798   print CGI::Tr({},
  799           CGI::td({-class=>"InfoPanel", -align=>"center"},
  800           CGI::start_table({-border=>"0"}),
  801             CGI::Tr({}, CGI::td({ -align=>"center"},
  802              CGI::submit(-name=>"select_all", -style=>$these_widths,
  803                   -value=>"Mark All For Adding"),
  804              CGI::submit(-name=>"select_none", -style=>$these_widths,
  805                   -value=>"Clear All Marks"),
  806          )),
  807     CGI::Tr({},
  808      CGI::td({},
  809       CGI::submit(-name=>"update", -style=>$these_widths. "; font-weight:bold",
  810                   -value=>"Update Set"),
  811         CGI::submit(-name=>"rerandomize",
  812                     -style=>$these_widths,
  813                     -value=>"Rerandomize"),
  814         CGI::submit(-name=>"cleardisplay",
  815                 -style=>$these_widths,
  816                 -value=>"Clear Problem Display")
  817   )),
  818   CGI::end_table()));
  819 }
  820 
  821 sub make_data_row {
  822   my $self = shift;
  823   my $sourceFileName = shift;
  824   my $pg = shift;
  825   my $cnt = shift;
  826   my $mark = shift || 0;
  827 
  828   $sourceFileName =~ s|^./||; # clean up top ugliness
  829 
  830   my $urlpath = $self->r->urlpath;
  831   my $problem_output = $pg->{flags}->{error_flag} ?
  832     CGI::div({class=>"ResultsWithError"}, CGI::em("This problem produced an error"))
  833     : CGI::div({class=>"RenderSolo"}, $pg->{body_text});
  834   $problem_output .= $pg->{flags}->{comment} if($pg->{flags}->{comment});
  835 
  836 
  837   #if($self->{r}->param('browse_which') ne 'browse_library') {
  838   my $problem_seed = $self->{'problem_seed'} || 1234;
  839   my $edit_link = CGI::a({href=>$self->systemLink(
  840      $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::PGProblemEditor",
  841         courseID =>$urlpath->arg("courseID"),
  842         setID=>"Undefined_Set",
  843         problemID=>"1"),
  844       params=>{sourceFilePath => "$sourceFileName", problemSeed=> $problem_seed}
  845       ), target=>"WW_Editor"}, "Edit it" );
  846 
  847   my $displayMode = $self->r->param("mydisplayMode");
  848   $displayMode = $self->r->ce->{pg}->{options}->{displayMode}
  849     if not defined $displayMode or $displayMode eq "None";
  850   my $try_link = CGI::a({href=>$self->systemLink(
  851     $urlpath->newFromModule("WeBWorK::ContentGenerator::Problem",
  852       courseID =>$urlpath->arg("courseID"),
  853       setID=>"Undefined_Set",
  854       problemID=>"1"),
  855     params =>{
  856       effectiveUser => scalar($self->r->param('user')),
  857       editMode => "SetMaker",
  858       problemSeed=> $problem_seed,
  859       sourceFilePath => "$sourceFileName",
  860       displayMode => $displayMode,
  861     }
  862   ), target=>"WW_View"}, "Try it");
  863 
  864   my %add_box_data = ( -name=>"trial$cnt",-value=>1,-label=>"Add this problem to the target set on the next update");
  865   if($mark & SUCCESS) {
  866     $add_box_data{ -label } .= " (just added this problem)";
  867   } elsif($mark & ADDED) {
  868     $add_box_data{ -checked } = 1;
  869   }
  870 
  871   my $inSet = ($self->{isInSet}{$sourceFileName})?
  872       CGI::span({-style=>"float:right; text-align: right"},
  873         CGI::i(CGI::b("(This problem is in the target set)"))) : "";
  874 
  875   print CGI::Tr({-align=>"left"}, CGI::td(
  876     CGI::div({-style=>"background-color: #DDDDDD; margin: 0px auto"},
  877       CGI::span({-style=>"float:left ; text-align: left"},"File name: $sourceFileName "),
  878       CGI::span({-style=>"float:right ; text-align: right"}, $edit_link, " ", $try_link)
  879     ), CGI::br(),
  880     CGI::checkbox(-name=>"hideme$cnt",-value=>1,-label=>"Don't show this problem on the next update",-override=>1),
  881     CGI::br(),
  882     $inSet,
  883     CGI::checkbox((%add_box_data),-override=>1),
  884     CGI::hidden(-name=>"filetrial$cnt", -default=>$sourceFileName,-override=>1).
  885     CGI::p($problem_output),
  886   ));
  887 }
  888 
  889 sub clear_default {
  890   my $r = shift;
  891   my $param = shift;
  892   my $default = shift;
  893   my $newvalue = $r->param($param) || '';
  894   $newvalue = '' if($newvalue eq $default);
  895   $r->param($param, $newvalue);
  896 }
  897 
  898 sub pre_header_initialize {
  899   my ($self) = @_;
  900   my $r = $self->r;
  901   ## For all cases, lets set some things
  902   $self->{error}=0;
  903   my $ce = $r->ce;
  904   my $db = $r->db;
  905   my $maxShown = $r->param('max_shown') || MAX_SHOW_DEFAULT;
  906   $maxShown = 10000000 if($maxShown eq 'All'); # let's hope there aren't more
  907   my $library_basic = $r->param('library_is_basic') || 1;
  908   $self->{problem_seed} = $r->param('problem_seed') || 1234;
  909   ## Fix some parameters
  910   for my $key (keys(%{ LIB2_DATA() })) {
  911     clear_default($r, LIB2_DATA->{$key}->{name}, LIB2_DATA->{$key}->{all} );
  912   }
  913     ##  Grab library sets to display from parameters list.  We will modify this
  914     ##  as we go through the if/else tree
  915     $self->{current_library_set} =  $r->param('library_sets');
  916 
  917   ##  These directories will have individual buttons
  918   %problib = %{$ce->{courseFiles}{problibs}} if $ce->{courseFiles}{problibs};
  919 
  920   my $userName = $r->param('user');
  921   my $user = $db->getUser($userName); # checked
  922   die "record for user $userName (real user) does not exist."
  923     unless defined $user;
  924   my $authz = $r->authz;
  925   unless ($authz->hasPermissions($userName, "modify_problem_sets")) {
  926     return(""); # Error message already produced in the body
  927   }
  928 
  929   ## Now one action we have to deal with here
  930   if ($r->param('edit_local')) {
  931     my $urlpath = $r->urlpath;
  932     my $db = $r->db;
  933     my $checkset = $db->getGlobalSet($r->param('local_sets'));
  934     if (not defined($checkset)) {
  935       $self->{error} = 1;
  936       $self->addbadmessage('You need to select a "Target Set" before you can edit it.');
  937     } else {
  938       my $page = $urlpath->newFromModule('WeBWorK::ContentGenerator::Instructor::ProblemSetDetail', setID=>$r->param('local_sets'), courseID=>$urlpath->arg("courseID"));
  939       my $url = $self->systemLink($page);
  940       $self->reply_with_redirect($url);
  941     }
  942   }
  943 
  944   ## Next, lots of set up so that errors can be reported with message()
  945 
  946   ############# List of problems we have already printed
  947 
  948   $self->{past_problems} = get_past_problem_files($r);
  949   # if we don't end up reusing problems, this will be wiped out
  950   # if we do redisplay the same problems, we must adjust this accordingly
  951   my @past_marks = map {$_->[1]} @{$self->{past_problems}};
  952   my $none_shown = scalar(@{$self->{past_problems}})==0;
  953   my @pg_files=();
  954   my $use_previous_problems = 1;
  955   my $first_shown = $r->param('first_shown') || 0;
  956   my $last_shown = $r->param('last_shown');
  957   if (not defined($last_shown)) {
  958     $last_shown = -1;
  959   }
  960   my @all_past_list = (); # these are include requested, but not shown
  961   my $j = 0;
  962   while (defined($r->param("all_past_list$j"))) {
  963     push @all_past_list, $r->param("all_past_list$j");
  964     $j++;
  965   }
  966 
  967   ############# Default of which problem selector to display
  968 
  969   my $browse_which = $r->param('browse_which') || 'browse_local';
  970 
  971 
  972 
  973   ## check for problem lib buttons
  974   my $browse_lib = '';
  975   foreach my $lib (keys %problib) {
  976     if ($r->param("browse_$lib")) {
  977       $browse_lib = "browse_$lib";
  978       last;
  979     }
  980   }
  981 
  982   ########### Start the logic through if elsif elsif ...
  983     debug("browse_lib", $r->param("$browse_lib"));
  984     debug("browse_library", $r->param("browse_library"));
  985     debug("browse_mysets", $r->param("browse_mysets"));
  986     debug("browse_setdefs", $r->param("browse_setdefs"));
  987   ##### Asked to browse certain problems
  988   if ($browse_lib ne '') {
  989     $browse_which = $browse_lib;
  990     $self->{current_library_set} = "";
  991     $use_previous_problems = 0; @pg_files = (); ## clear old problems
  992   } elsif ($r->param('browse_library')) {
  993     $browse_which = 'browse_library';
  994     $self->{current_library_set} = "";
  995     $use_previous_problems = 0; @pg_files = (); ## clear old problems
  996   } elsif ($r->param('browse_local')) {
  997     $browse_which = 'browse_local';
  998     #$self->{current_library_set} = "";
  999     $use_previous_problems = 0; @pg_files = (); ## clear old problems
 1000   } elsif ($r->param('browse_mysets')) {
 1001     $browse_which = 'browse_mysets';
 1002     $self->{current_library_set} = "";
 1003     $use_previous_problems = 0; @pg_files = (); ## clear old problems
 1004   } elsif ($r->param('browse_setdefs')) {
 1005     $browse_which = 'browse_setdefs';
 1006     $self->{current_library_set} = "";
 1007     $use_previous_problems = 0; @pg_files = (); ## clear old problems
 1008 
 1009     ##### Change the seed value
 1010 
 1011   } elsif ($r->param('rerandomize')) {
 1012     $self->{problem_seed}= 1+$self->{problem_seed};
 1013     #$r->param('problem_seed', $problem_seed);
 1014     $self->addbadmessage('Changing the problem seed for display, but there are no problems showing.') if $none_shown;
 1015 
 1016     ##### Clear the display
 1017 
 1018   } elsif ($r->param('cleardisplay')) {
 1019     @pg_files = ();
 1020     $use_previous_problems=0;
 1021     $self->addbadmessage('The display was already cleared.') if $none_shown;
 1022 
 1023     ##### View problems selected from the local list
 1024 
 1025   } elsif ($r->param('view_local_set')) {
 1026 
 1027     my $set_to_display = $self->{current_library_set};
 1028     if (not defined($set_to_display) or $set_to_display eq SELECT_LOCAL_STRING or $set_to_display eq "Found no directories containing problems") {
 1029       $self->addbadmessage('You need to select a set to view.');
 1030     } else {
 1031       $set_to_display = '.' if $set_to_display eq MY_PROBLEMS;
 1032       $set_to_display = substr($browse_which,7) if $set_to_display eq MAIN_PROBLEMS;
 1033       @pg_files = list_pg_files($ce->{courseDirs}->{templates},
 1034         "$set_to_display");
 1035       $use_previous_problems=0;
 1036     }
 1037 
 1038     ##### View problems selected from the a set in this course
 1039 
 1040   } elsif ($r->param('view_mysets_set')) {
 1041 
 1042     my $set_to_display = $self->{current_library_set};
 1043     debug("set_to_display is $set_to_display");
 1044     if (not defined($set_to_display)
 1045         or $set_to_display eq "Select a Homework Set"
 1046         or $set_to_display eq NO_LOCAL_SET_STRING) {
 1047       $self->addbadmessage("You need to select a set from this course to view.");
 1048     } else {
 1049       # DBFIXME don't use ID list, use an iterator
 1050       my @problemList = $db->listGlobalProblems($set_to_display);
 1051       my $problem;
 1052       @pg_files=();
 1053       for $problem (@problemList) {
 1054         my $problemRecord = $db->getGlobalProblem($set_to_display, $problem); # checked
 1055         die "global $problem for set $set_to_display not found." unless
 1056           $problemRecord;
 1057         push @pg_files, $problemRecord->source_file;
 1058 
 1059       }
 1060       @pg_files = sortByName(undef,@pg_files);
 1061       $use_previous_problems=0;
 1062     }
 1063 
 1064     ##### View from the library database
 1065 
 1066   } elsif ($r->param('lib_view')) {
 1067 
 1068     @pg_files=();
 1069     my @dbsearch = WeBWorK::Utils::ListingDB::getSectionListings($r);
 1070     my ($result, $tolibpath);
 1071     for $result (@dbsearch) {
 1072       $tolibpath = "Library/$result->{path}/$result->{filename}";
 1073 
 1074       ## Too clunky!!!!
 1075       push @pg_files, $tolibpath;
 1076     }
 1077     $use_previous_problems=0;
 1078 
 1079     ##### View a set from a set*.def
 1080 
 1081   } elsif ($r->param('view_setdef_set')) {
 1082 
 1083     my $set_to_display = $self->{current_library_set};
 1084     debug("set_to_display is $set_to_display");
 1085     if (not defined($set_to_display)
 1086         or $set_to_display eq "Select a Set Definition File"
 1087         or $set_to_display eq NO_LOCAL_SET_STRING) {
 1088       $self->addbadmessage("You need to select a set definition file to view.");
 1089     } else {
 1090       @pg_files= $self->read_set_def($set_to_display);
 1091     }
 1092     $use_previous_problems=0;
 1093 
 1094     ##### Edit the current local homework set
 1095 
 1096   } elsif ($r->param('edit_local')) { ## Jump to set edit page
 1097 
 1098     ; # already handled
 1099 
 1100 
 1101     ##### Make a new local homework set
 1102 
 1103   } elsif ($r->param('new_local_set')) {
 1104     if ($r->param('new_set_name') !~ /^[\w .-]*$/) {
 1105       $self->addbadmessage("The name ".$r->param('new_set_name')." is not a valid set name.  Use only letters, digits, -, _, and .");
 1106     } else {
 1107       my $newSetName = $r->param('new_set_name');
 1108       # if we want to munge the input set name, do it here
 1109       $newSetName =~ s/\s/_/g;
 1110       debug("local_sets was ", $r->param('local_sets'));
 1111       $r->param('local_sets',$newSetName);  ## use of two parameter param
 1112       debug("new value of local_sets is ", $r->param('local_sets'));
 1113       my $newSetRecord   = $db->getGlobalSet($newSetName);
 1114       if (defined($newSetRecord)) {
 1115               $self->addbadmessage("The set name $newSetName is already in use.
 1116               Pick a different name if you would like to start a new set.");
 1117       } else {      # Do it!
 1118         # DBFIXME use $db->newGlobalSet
 1119         $newSetRecord = $db->{set}->{record}->new();
 1120         $newSetRecord->set_id($newSetName);
 1121         $newSetRecord->set_header("");
 1122         $newSetRecord->hardcopy_header("");
 1123         $newSetRecord->open_date(time()+60*60*24*7); # in one week
 1124         $newSetRecord->due_date(time()+60*60*24*7*2); # in two weeks
 1125         $newSetRecord->answer_date(time()+60*60*24*7*3); # in three weeks
 1126         eval {$db->addGlobalSet($newSetRecord)};
 1127         if ($@) {
 1128           $self->addbadmessage("Problem creating set $newSetName<br> $@");
 1129         } else {
 1130           $self->addgoodmessage("Set $newSetName has been created.");
 1131           my $selfassign = $r->param('selfassign') || "";
 1132           $selfassign = "" if($selfassign =~ /false/i); # deal with javascript false
 1133           if($selfassign) {
 1134             $self->assignSetToUser($userName, $newSetRecord);
 1135             $self->addgoodmessage("Set $newSetName was assigned to $userName.");
 1136           }
 1137         }
 1138       }
 1139     }
 1140 
 1141     ##### Add selected problems to the current local set
 1142 
 1143   } elsif ($r->param('update')) {
 1144     ## first handle problems to be added before we hide them
 1145     my($localSet, @selected);
 1146 
 1147     @pg_files = grep {($_->[1] & ADDED) != 0 } @{$self->{past_problems}};
 1148     @selected = map {$_->[0]} @pg_files;
 1149 
 1150     my @action_files = grep {$_->[1] > 0 } @{$self->{past_problems}};
 1151     # There are now good reasons to do an update without selecting anything.
 1152     #if(scalar(@action_files) == 0) {
 1153     #  $self->addbadmessage('Update requested, but no problems were marked.');
 1154     #}
 1155 
 1156     if (scalar(@selected)>0) {  # if some are to be added, they need a place to go
 1157       $localSet = $r->param('local_sets');
 1158       if (not defined($localSet) or
 1159           $localSet eq SELECT_SET_STRING or
 1160                 $localSet eq NO_LOCAL_SET_STRING) {
 1161         $self->addbadmessage('You are trying to add problems to something,
 1162         but you did not select a "Target Set" name as a target.');
 1163       } else {
 1164         my $newSetRecord  = $db->getGlobalSet($localSet);
 1165         if (not defined($newSetRecord)) {
 1166           $self->addbadmessage("You are trying to add problems to $localSet,
 1167           but that set does not seem to exist!  I bet you used your \"Back\" button.");
 1168         } else {
 1169           my $addcount = add_selected($self, $db, $localSet);
 1170           if($addcount > 0) {
 1171             $self->addgoodmessage("Added $addcount problem".(($addcount>1)?'s':'').
 1172               " to $localSet.");
 1173           }
 1174         }
 1175       }
 1176     }
 1177     ## now handle problems to be hidden
 1178 
 1179     ## only keep the ones which are not hidden
 1180     @pg_files = grep {($_->[1] & HIDDEN) ==0 } @{$self->{past_problems}};
 1181     @past_marks = map {$_->[1]} @pg_files;
 1182     @pg_files = map {$_->[0]} @pg_files;
 1183     @all_past_list = (@all_past_list[0..($first_shown-1)],
 1184           @pg_files,
 1185           @all_past_list[($last_shown+1)..(scalar(@all_past_list)-1)]);
 1186     $last_shown = $first_shown+$maxShown -1; debug("last_shown 3: ", $last_shown);
 1187     $last_shown = (scalar(@all_past_list)-1) if($last_shown>=scalar(@all_past_list)); debug("last_shown 4: ", $last_shown);
 1188 
 1189   } elsif ($r->param('next_page')) {
 1190     $first_shown = $last_shown+1;
 1191     $last_shown = $first_shown+$maxShown-1; debug("last_shown 5: ", $last_shown);
 1192     $last_shown = (scalar(@all_past_list)-1) if($last_shown>=scalar(@all_past_list)); debug("last_shown 6: ", $last_shown);
 1193     @past_marks = ();
 1194   } elsif ($r->param('prev_page')) {
 1195     $last_shown = $first_shown-1;
 1196     $first_shown = $last_shown - $maxShown+1;
 1197 
 1198     $first_shown = 0 if($first_shown<0);
 1199     @past_marks = ();
 1200 
 1201   } elsif ($r->param('select_all')) {
 1202     @past_marks = map {1} @past_marks;
 1203   } elsif ($r->param('library_basic')) {
 1204     $library_basic = 1;
 1205     for my $jj (qw(textchapter textsection textbook)) {
 1206       $r->param('library_'.$jj,'');
 1207     }
 1208   } elsif ($r->param('library_advanced')) {
 1209     $library_basic = 2;
 1210   } elsif ($r->param('library_reset')) {
 1211     for my $jj (qw(chapters sections subjects textbook keywords)) {
 1212       $r->param('library_'.$jj,'');
 1213     }
 1214   } elsif ($r->param('select_none')) {
 1215     @past_marks = ();
 1216   } else {
 1217     ##### No action requested, probably our first time here
 1218   }       ##### end of the if elsif ...
 1219 
 1220 
 1221   ############# List of local sets
 1222 
 1223   # DBFIXME sorting in database, please!
 1224   my @all_db_sets = $db->listGlobalSets;
 1225   @all_db_sets = sortByName(undef, @all_db_sets);
 1226 
 1227   if ($use_previous_problems) {
 1228     @pg_files = @all_past_list;
 1229   } else {
 1230     $first_shown = 0;
 1231     $last_shown = scalar(@pg_files)<$maxShown ? scalar(@pg_files) : $maxShown;
 1232     $last_shown--;    # to make it an array index
 1233     @past_marks = ();
 1234   }
 1235   ############# Now store data in self for retreival by body
 1236   $self->{first_shown} = $first_shown;
 1237   $self->{last_shown} = $last_shown;
 1238   $self->{browse_which} = $browse_which;
 1239   #$self->{problem_seed} = $problem_seed;
 1240   $self->{pg_files} = \@pg_files;
 1241   $self->{past_marks} = \@past_marks;
 1242   $self->{all_db_sets} = \@all_db_sets;
 1243   $self->{library_basic} = $library_basic;
 1244   debug("past_marks is ", join(" ", @{$self->{past_marks}}));
 1245 }
 1246 
 1247 
 1248 sub title {
 1249   return "Library Browser";
 1250 }
 1251 
 1252 # hide view options panel since it distracts from SetMaker's built-in view options
 1253 sub options {
 1254   return "";
 1255 }
 1256 
 1257 sub body {
 1258   my ($self) = @_;
 1259 
 1260   my $r = $self->r;
 1261   my $ce = $r->ce;    # course environment
 1262   my $db = $r->db;    # database
 1263   my $j;      # garden variety counter
 1264 
 1265   my $userName = $r->param('user');
 1266 
 1267   my $user = $db->getUser($userName); # checked
 1268   die "record for user $userName (real user) does not exist."
 1269     unless defined $user;
 1270 
 1271   ### Check that this is a professor
 1272   my $authz = $r->authz;
 1273   unless ($authz->hasPermissions($userName, "modify_problem_sets")) {
 1274     print "User $userName returned " .
 1275       $authz->hasPermissions($user, "modify_problem_sets") .
 1276   " for permission";
 1277     return(CGI::div({class=>'ResultsWithError'},
 1278     CGI::em("You are not authorized to access the Instructor tools.")));
 1279   }
 1280 
 1281   ##########  Extract information computed in pre_header_initialize
 1282 
 1283   my $first_shown = $self->{first_shown};
 1284   my $last_shown = $self->{last_shown};
 1285   my $browse_which = $self->{browse_which};
 1286   my $problem_seed = $self->{problem_seed}||1234;
 1287   my @pg_files = @{$self->{pg_files}};
 1288   my @all_db_sets = @{$self->{all_db_sets}};
 1289 
 1290   my @pg_html=($last_shown>=$first_shown) ?
 1291     renderProblems(r=> $r,
 1292                    user => $user,
 1293                    problem_list => [@pg_files[$first_shown..$last_shown]],
 1294                    displayMode => $r->param('mydisplayMode')) : ();
 1295 
 1296   my %isInSet;
 1297   my $setName = $r->param("local_sets");
 1298   if ($setName) {
 1299     # DBFIXME where clause, iterator
 1300     # DBFIXME maybe instead of hashing here, query when checking source files?
 1301     # DBFIXME definitely don't need to be making full record objects
 1302     # DBFIXME SELECT source_file FROM whatever_problem WHERE set_id=? GROUP BY source_file ORDER BY NULL;
 1303     # DBFIXME (and stick result directly into hash)
 1304     foreach my $problem ($db->listGlobalProblems($setName)) {
 1305       my $problemRecord = $db->getGlobalProblem($setName, $problem);
 1306       $isInSet{$problemRecord->source_file} = 1;
 1307     }
 1308   }
 1309   $self->{isInSet} = \%isInSet;
 1310 
 1311   ##########  Top part
 1312   print CGI::start_form({-method=>"POST", -action=>$r->uri, -name=>'mainform'}),
 1313     $self->hidden_authen_fields,
 1314       '<div align="center">',
 1315   CGI::start_table({-border=>2});
 1316   $self->make_top_row('all_db_sets'=>\@all_db_sets,
 1317          'browse_which'=> $browse_which);
 1318   print CGI::hidden(-name=>'browse_which', -value=>$browse_which,-override=>1),
 1319     CGI::hidden(-name=>'problem_seed', -value=>$problem_seed, -override=>1);
 1320   for ($j = 0 ; $j < scalar(@pg_files) ; $j++) {
 1321     print CGI::hidden(-name=>"all_past_list$j", -value=>$pg_files[$j],-override=>1);
 1322   }
 1323 
 1324   print CGI::hidden(-name=>'first_shown', -value=>$first_shown,-override=>1);
 1325 
 1326   print CGI::hidden(-name=>'last_shown', -value=>$last_shown, -override=>1);
 1327 
 1328 
 1329   ########## Now print problems
 1330   my $jj;
 1331   for ($jj=0; $jj<scalar(@pg_html); $jj++) {
 1332     $pg_files[$jj] =~ s|^$ce->{courseDirs}->{templates}/?||;
 1333     $self->make_data_row($pg_files[$jj+$first_shown], $pg_html[$jj], $jj+1, $self->{past_marks}->[$jj]);
 1334     #$self->make_data_row($pg_files[$jj+$first_shown], $pg_html[$jj], $jj+1, $self->{past_marks}->[$jj+$first_shown]); #MEG
 1335   }
 1336 
 1337   ########## Finish things off
 1338   print CGI::end_table();
 1339   print '</div>';
 1340   #  if($first_shown>0 or (1+$last_shown)<scalar(@pg_files)) {
 1341   my ($next_button, $prev_button) = ("", "");
 1342   if ($first_shown > 0) {
 1343     $prev_button = CGI::submit(-name=>"prev_page", -style=>"width:15ex",
 1344              -value=>"Previous page");
 1345   }
 1346   if ((1+$last_shown)<scalar(@pg_files)) {
 1347     $next_button = CGI::submit(-name=>"next_page", -style=>"width:15ex",
 1348              -value=>"Next page");
 1349   }
 1350   if (scalar(@pg_files)>0) {
 1351     print CGI::p(($first_shown+1)."-".($last_shown+1)." of ".scalar(@pg_files).
 1352      " shown.", $prev_button, " ", $next_button);
 1353   }
 1354   #  }
 1355   print CGI::endform(), "\n";
 1356 
 1357   return "";
 1358 }
 1359 
 1360 =head1 AUTHOR
 1361 
 1362 Written by John Jones, jj (at) asu.edu.
 1363 
 1364 =cut
 1365 
 1366 1;

aubreyja at gmail dot com
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