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Extricating Problem Library from DB structure, part II.
1 ################################################################################ 2 # WeBWorK Online Homework Delivery System 3 # Copyright © 2000-2003 The WeBWorK Project, http://openwebwork.sf.net/ 4 # $CVSHeader: webwork-modperl/lib/WeBWorK/ContentGenerator/Instructor/SetMaker.pm,v 1.11 2004/05/15 19:13:43 jj Exp $ 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 problem sets. 24 25 =cut 26 27 use strict; 28 use warnings; 29 30 use CGI::Pretty qw(); 31 use WeBWorK::Form; 32 use WeBWorK::Utils qw(readDirectory max); 33 use WeBWorK::Utils::Tasks qw(renderProblems); 34 35 require WeBWorK::Utils::ListingDB; 36 37 use constant MAX_SHOW => 20; 38 39 ## Flags for operations on files 40 41 use constant ADDED => 1; 42 use constant HIDDEN => (1 << 1); 43 use constant SUCCESS => (1 << 2); 44 45 ## Maybe this should be in ContentGenerator.pm 46 47 sub adderrmsg { 48 my $self = shift; 49 my $msg = shift; 50 $self->addmessage(CGI::div({class=>"ResultsWithError"}, $msg)); 51 } 52 53 54 ## This is for searching the disk for directories containing pg files. 55 ## to make the recursion work, this returns an array where the first 56 ## item is 1 or 0 depending on whether or not the current 57 ## directory has any pg files. The second is a list of directories 58 ## which contain pg files. 59 sub get_library_sets { 60 my $amtop = shift; 61 my $topdir = shift; 62 my @lis = readDirectory($topdir); 63 my @pgs = grep { m/\.pg$/ and (not m/Header\.pg/) and -f "$topdir/$_"} @lis; 64 my $havepg = scalar(@pgs)>0 ? 1 : 0; 65 my @mdirs = grep {$_ ne "." and $_ ne ".." and $_ ne "Library" 66 and -d "$topdir/$_"} @lis; 67 if($amtop) { # we don't want the library 68 @mdirs = grep {$_ ne "Library"} @mdirs; 69 } 70 my ($adir, @results, @thisresult); 71 for $adir (@mdirs) { 72 @results = get_library_sets(0, "$topdir/$adir"); 73 my $isadirok = shift @results; 74 @thisresult = (@thisresult, @results); 75 if ($isadirok) { 76 @thisresult = ("$topdir/$adir", @thisresult); 77 } 78 } 79 return(($havepg, @thisresult)); 80 } 81 82 ## List all the pg files in the requested directory 83 sub list_pg_files { 84 my $templatedir = shift; 85 my $topdir = shift; 86 87 my @lis = readDirectory("$templatedir/$topdir"); 88 my @pgs = grep { m/\.pg$/ and (not m/Header\.pg/) and -f "$templatedir/$topdir/$_"} @lis; 89 @pgs = map { "$topdir/$_" } @pgs; 90 return(@pgs); 91 } 92 93 ## go through past page getting a list of identifiers for the problems 94 ## and whether or not they are selected, and whether or not they should 95 ## be hidden 96 97 sub get_past_problem_files { 98 my $r = shift; 99 my @found=(); 100 my $count =1; 101 while (defined($r->param("filetrial$count"))) { 102 my $val = 0; 103 $val |= ADDED if($r->param("trial$count")); 104 $val |= HIDDEN if($r->param("hideme$count")); 105 push @found, [$r->param("filetrial$count"), $val]; 106 $count++; 107 } 108 return(\@found); 109 } 110 111 #### For adding new problems 112 113 sub add_selected { 114 my $self = shift; 115 my $db = shift; 116 my $setName = shift; 117 my @past_problems = @{$self->{past_problems}}; 118 my @selected = @past_problems; 119 my (@path, $file, $selected, $freeProblemID); 120 $freeProblemID = max($db->listGlobalProblems($setName)) + 1; 121 my $addedcount=0; 122 123 for $selected (@selected) { 124 if($selected->[1] & ADDED) { 125 $file = $selected->[0]; 126 @path = split "/", $selected->[0]; 127 pop @path; # Remove the file name from the path 128 shift @path if $path[0] eq ""; # remove the null element from the begining 129 my $problemRecord = $db->newGlobalProblem(); 130 $problemRecord->problem_id($freeProblemID++); 131 $problemRecord->set_id($setName); 132 $problemRecord->source_file($file); 133 $problemRecord->value("1"); 134 $problemRecord->max_attempts("-1"); 135 $db->addGlobalProblem($problemRecord); 136 $self->assignProblemToAllSetUsers($problemRecord); 137 $selected->[1] &= SUCCESS; 138 $addedcount++; 139 } 140 } 141 return($addedcount); 142 } 143 144 145 ############# List of sets of problems in templates directory 146 147 sub get_problem_directories { 148 my $ce = shift; 149 my @all_problem_directories = get_library_sets(1, $ce->{courseDirs}->{templates}); 150 my $includetop = shift @all_problem_directories; 151 my $j; 152 for ($j=0; $j<scalar(@all_problem_directories); $j++) { 153 $all_problem_directories[$j] =~ s|^$ce->{courseDirs}->{templates}/?||; 154 } 155 @all_problem_directories = sort @all_problem_directories; 156 unshift @all_problem_directories, ' -- Top -- ' if($includetop); 157 return (\@all_problem_directories); 158 } 159 160 ### The browsing panel has three versions 161 ##### Version 1 is local problems 162 sub browse_local_panel { 163 my $self = shift; 164 my $library_selected = shift; 165 166 my $list_of_prob_dirs= get_problem_directories($self->r->ce); 167 if(scalar(@$list_of_prob_dirs) == 0) { 168 $library_selected = "Found no directories containing problems"; 169 unshift @{$list_of_prob_dirs}, $library_selected; 170 } else { 171 my $default_value = "Select a Local Problem Collection"; 172 if (not $library_selected or $library_selected eq $default_value) { 173 unshift @{$list_of_prob_dirs}, $default_value; 174 $library_selected = $default_value; 175 } 176 } 177 178 print CGI::Tr(CGI::td({-class=>"InfoPanel"}, "Local Problems: ", 179 CGI::popup_menu(-name=> 'library_sets', 180 -values=>$list_of_prob_dirs, 181 -default=> $library_selected), 182 CGI::br(), 183 CGI::submit(-name=>"view_local_set", -value=>"View Problems"), 184 )); 185 } 186 187 ##### Version 2 is local problem sets 188 sub browse_mysets_panel { 189 my $self = shift; 190 my $library_selected = shift; 191 my $list_of_local_sets = shift; 192 my $default_value = "Select a Problem Set"; 193 194 if(scalar(@$list_of_local_sets) == 0) { 195 $list_of_local_sets = ['There are no local sets yet']; 196 } elsif (not $library_selected or $library_selected eq $default_value) { 197 unshift @{$list_of_local_sets}, $default_value; 198 $library_selected = $default_value; 199 } 200 201 print CGI::Tr(CGI::td({-class=>"InfoPanel"}, "Browse from: ", 202 CGI::popup_menu(-name=> 'library_sets', 203 -values=>$list_of_local_sets, 204 -default=> $library_selected), 205 CGI::br(), 206 CGI::submit(-name=>"view_mysets_set", -value=>"View This Set"), 207 )); 208 } 209 210 ##### Version 3 is the problem library 211 212 213 # There a different levels, and you can pick a new chapter, 214 # pick a new section, pick all from chapter, pick all from section 215 # 216 # Incoming data - current chapter, current section 217 sub browse_library_panel { 218 my $self = shift; 219 my $r = $self->r; 220 my $ce = $r->ce; 221 222 my $libraryRoot = $r->{ce}->{problemLibrary}->{root}; 223 224 unless($libraryRoot) { 225 print CGI::Tr(CGI::td(CGI::div({class=>'ResultsWithError', align=>"center"}, 226 "The problem library has not been installed."))); 227 return; 228 } 229 # Test if the Library directory exists. If not, try to make it 230 unless(-d "$ce->{courseDirs}->{templates}/Library") { 231 unless(symlink($libraryRoot, "$ce->{courseDirs}->{templates}/Library")) { 232 my $msg = <<"HERE"; 233 You are missing the directory <code>templates/Library</code>, which is needed 234 for the Problem Library to function. It should be a link pointing to 235 <code>$libraryRoot</code>, which you set in <code>conf/global.conf</code>. 236 I tried to make the link for you, but that failed. Check the permissions 237 in your <code>templates</code> directory. 238 HERE 239 $self->adderrmsg($msg); 240 } 241 } 242 243 my $default_chap = "All Chapters"; 244 my $default_sect = "All Sections"; 245 246 my @chaps = WeBWorK::Utils::ListingDB::getAllChapters($r->{ce}); 247 unshift @chaps, $default_chap; 248 my $chapter_selected = $r->param('library_chapters') || $default_chap; 249 250 my @sects=(); 251 if ($chapter_selected ne $default_chap) { 252 @sects = WeBWorK::Utils::ListingDB::getAllSections($r->{ce}, $chapter_selected); 253 } 254 255 my @textbooks = ('Textbook info not ready'); 256 257 unshift @sects, $default_sect; 258 my $section_selected = $r->param('library_sections') || $default_sect; 259 260 print CGI::Tr(CGI::td({-class=>"InfoPanel"}, 261 CGI::start_table(), 262 CGI::Tr( 263 CGI::td(["Chapter:", 264 CGI::popup_menu(-name=> 'library_chapters', 265 -values=>\@chaps, 266 -default=> $chapter_selected, 267 -onchange=>"submit();return true" 268 ), 269 CGI::submit(-name=>"lib_select_chapter", -value=>"Update Section List")])), 270 CGI::Tr( 271 CGI::td("Section:"), 272 CGI::td({-colspan=>2}, 273 CGI::popup_menu(-name=> 'library_sections', 274 -values=>\@sects, 275 -default=> $section_selected 276 ))), 277 278 # CGI::Tr( 279 # CGI::td("Textbook:"), 280 # CGI::td({-colspan=>2}, 281 # CGI::popup_menu(-name=> 'library_textbooks', 282 # -values=>\@textbooks, 283 # # -default=> $section_selected 284 # ))), 285 286 # CGI::Tr( 287 # CGI::td("Keywords:"), 288 # CGI::td({-colspan=>2}, CGI::textfield(-name=>"keywords", 289 # -default=>"Keywords not implemented yet", 290 # -override=>1, -size=>60))), 291 CGI::Tr(CGI::td({-colspan=>3},CGI::submit(-name=>"lib_view", -value=>"View Problems"))), 292 CGI::end_table(), 293 )); 294 } 295 296 sub make_top_row { 297 my $self = shift; 298 my $r = $self->r; 299 my %data = @_; 300 301 my $list_of_local_sets = $data{all_set_defs}; 302 my $have_local_sets = scalar(@$list_of_local_sets); 303 my $browse_which = $data{browse_which}; 304 my $library_selected = $r->param('library_sets'); 305 my $set_selected = $r->param('local_sets'); 306 307 my ($dis1, $dis2, $dis3) = ("","",""); 308 $dis1 = '-disabled' if($browse_which eq 'browse_library'); 309 $dis2 = '-disabled' if($browse_which eq 'browse_local'); 310 $dis3 = '-disabled' if($browse_which eq 'browse_mysets'); 311 312 my $these_widths = "width: 27ex"; 313 print CGI::Tr(CGI::td({-class=>"InfoPanel", -align=>"center"}, 314 CGI::submit(-name=>"browse_library", -value=>"Browse Problem Library", -style=>$these_widths, $dis1), 315 CGI::submit(-name=>"browse_local", -value=>"Browse Local Problems", -style=>$these_widths, $dis2), 316 CGI::submit(-name=>"browse_mysets", -value=>"Browse From This Course", -style=>$these_widths, $dis3), 317 )); 318 319 print CGI::Tr(CGI::td({-bgcolor=>"black"})); 320 321 if ($browse_which eq 'browse_local') { 322 $self->browse_local_panel($library_selected); 323 } elsif ($browse_which eq 'browse_mysets') { 324 $self->browse_mysets_panel($library_selected, $list_of_local_sets); 325 } else { 326 $self->browse_library_panel(); 327 } 328 329 print CGI::Tr(CGI::td({-bgcolor=>"black"})); 330 331 if($have_local_sets ==0) { 332 $list_of_local_sets = ['There are no local sets yet']; 333 } elsif (not $set_selected or $set_selected eq "Select a Set for This Course") { 334 if ($list_of_local_sets->[0] eq "Select a Problem Set") { 335 shift @{$list_of_local_sets}; 336 } 337 unshift @{$list_of_local_sets}, "Select a Set for This Course"; 338 $set_selected = "Select a Set for This Course"; 339 } 340 341 print CGI::Tr(CGI::td({-class=>"InfoPanel"}, "Current Set: ", 342 CGI::popup_menu(-name=> 'local_sets', 343 -values=>$list_of_local_sets, 344 -default=> $set_selected), 345 CGI::submit(-name=>"edit_local", -value=>"Edit Current Set"), 346 CGI::br(), 347 CGI::br(), 348 CGI::submit(-name=>"new_local_set", -value=>"Create New Local Set:"), 349 " ", 350 CGI::textfield(-name=>"new_set_name", 351 -default=>"Name for new set here", 352 -override=>1, -size=>30), 353 CGI::br(), 354 )); 355 356 print CGI::Tr(CGI::td({-bgcolor=>"black"})); 357 358 print CGI::Tr(CGI::td({-class=>"InfoPanel", -align=>"center"}, 359 CGI::submit(-name=>"update", -style=>$these_widths, 360 -value=>"Act on Marked Problems"), 361 CGI::submit(-name=>"rerandomize", 362 -style=>$these_widths, 363 -value=>"Rerandomize"), 364 CGI::submit(-name=>"cleardisplay", 365 -style=>$these_widths, 366 -value=>"Clear Problem Display"))); 367 368 } 369 370 sub make_data_row { 371 my $self = shift; 372 my $sourceFileName = shift; 373 my $pg = shift; 374 my $cnt = shift; 375 376 $sourceFileName =~ s|^./||; # clean up top ugliness 377 378 my $urlpath = $self->r->urlpath; 379 my $problem_output = $pg->{flags}->{error_flag} ? 380 CGI::em("This problem produced an error") 381 : CGI::div({class=>"RenderSolo"}, $pg->{body_text}); 382 383 384 my $edit_link = ''; 385 #if($self->{r}->param('browse_which') ne 'browse_library') { 386 if($sourceFileName !~ /^Library\//) { 387 $edit_link = CGI::a({href=>$self->systemLink($urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::PGProblemEditor", 388 courseID =>$urlpath->arg("courseID"), 389 setID=>"Undefined_Set", 390 problemID=>"1"), 391 params=>{sourceFilePath => "$sourceFileName"} 392 )}, "Edit it" ); 393 } 394 395 my $try_link = CGI::a({href=>$self->systemLink($urlpath->newFromModule("WeBWorK::ContentGenerator::Problem", 396 courseID =>$urlpath->arg("courseID"), 397 setID=>"Undefined_Set", 398 problemID=>"1"), 399 params =>{effectiveUser => $self->r->param('user'), 400 editMode => "SetMaker", 401 sourceFilePath => "$sourceFileName"} )}, "Try it"); 402 403 404 405 print CGI::Tr({-align=>"left"}, CGI::td( 406 407 CGI::div({-style=>"background-color: #DDDDDD; margin: 0px auto"}, 408 CGI::span({-style=>"float:left ; text-align: left"},"File name: $sourceFileName "), 409 CGI::span({-style=>"float:right ; text-align: right"}, $edit_link, " ", $try_link) 410 ), CGI::br(), 411 412 413 414 415 CGI::checkbox(-name=>"hideme$cnt",-value=>1,-label=>"Don't show me on the next update"), 416 CGI::br(), 417 CGI::checkbox(-name=>"trial$cnt",-value=>1,-label=>"Add me to the current set on the next update"), 418 CGI::hidden(-name=>"filetrial$cnt", -default=>[$sourceFileName]). 419 CGI::p($problem_output), 420 )); 421 } 422 423 424 sub pre_header_initialize { 425 my ($self) = @_; 426 my $r = $self->r; 427 ## For all cases, lets set some things 428 $self->{error}=0; 429 my $ce = $r->ce; 430 my $db = $r->db; 431 432 433 my $userName = $r->param('user'); 434 my $user = $db->getUser($userName); # checked 435 die "record for user $userName (real user) does not exist." 436 unless defined $user; 437 my $authz = $r->authz; 438 unless ($authz->hasPermissions($userName, "modify_problem_sets")) { 439 return(""); # Error message already produced in the body 440 } 441 442 ## Now one action we have to deal with here 443 if ($r->param('edit_local')) { 444 my $urlpath = $r->urlpath; 445 my $db = $r->db; 446 my $checkset = $db->getGlobalSet($r->param('local_sets')); 447 if (not defined($checkset)) { 448 $self->{error} = 1; 449 $self->adderrmsg('You need to select a "Current Set" before you can edit it.'); 450 } else { 451 my $page = $urlpath->newFromModule('WeBWorK::ContentGenerator::Instructor::ProblemSetEditor', setID=>$r->param('local_sets'), courseID=>$urlpath->arg("courseID")); 452 my $url = $self->systemLink($page); 453 $self->reply_with_redirect($url); 454 } 455 } 456 457 ## Next, lots of set up so that errors can be reported with message() 458 459 ############# List of problems we have already printed 460 461 $self->{past_problems} = get_past_problem_files($r); 462 my $none_shown = scalar(@{$self->{past_problems}})==0; 463 my @pg_files=(); 464 my $use_previous_problems = 1; 465 my $first_shown = $r->param('first_shown') || 0; 466 my $last_shown = $r->param('last_shown'); 467 if (not defined($last_shown)) { 468 $last_shown = -1; 469 } 470 my @all_past_list = (); # these are include requested, but not shown 471 my $j = 0; 472 while (defined($r->param("all_past_list$j"))) { 473 push @all_past_list, $r->param("all_past_list$j"); 474 $j++; 475 } 476 477 ############# Default of which problem selector to display 478 479 my $browse_which = $r->param('browse_which') || 'browse_local'; 480 481 my $problem_seed = $r->param('problem_seed') || 0; 482 $r->param('problem_seed', $problem_seed); # if it wasn't defined before 483 484 ########### Start the logic through if elsif elsif ... 485 486 ##### Asked to browse certain problems 487 if ($r->param('browse_library')) { 488 $browse_which = 'browse_library'; 489 $r->param('library_sets', ""); 490 } elsif ($r->param('browse_local')) { 491 $browse_which = 'browse_local'; 492 $r->param('library_sets', ""); 493 } elsif ($r->param('browse_mysets')) { 494 $browse_which = 'browse_mysets'; 495 $r->param('library_sets', ""); 496 497 ##### Change the seed value 498 499 } elsif ($r->param('rerandomize')) { 500 $problem_seed++; 501 $r->param('problem_seed', $problem_seed); 502 $self->adderrmsg('Changing the problem seed for display, but there are no problems showing.') if $none_shown; 503 504 ##### Clear the display 505 506 } elsif ($r->param('cleardisplay')) { 507 @pg_files = (); 508 $use_previous_problems=0; 509 $self->adderrmsg('The display was already cleared.') if $none_shown; 510 511 ##### View problems selected from the local list 512 513 } elsif ($r->param('view_local_set')) { 514 515 my $set_to_display = $r->param('library_sets'); 516 if (not defined($set_to_display) or $set_to_display eq "Select a Local Problem Collection" or $set_to_display eq "Found no directories containing problems") { 517 $self->adderrmsg('You need to select a set to view.'); 518 } else { 519 $set_to_display = '.' if $set_to_display eq ' -- Top -- '; 520 @pg_files = list_pg_files($ce->{courseDirs}->{templates}, 521 "$set_to_display"); 522 $use_previous_problems=0; 523 } 524 525 ##### View problems selected from the a set in this course 526 527 } elsif ($r->param('view_mysets_set')) { 528 529 my $set_to_display = $r->param('library_sets'); 530 if (not defined($set_to_display) 531 or $set_to_display eq "Select a Problem Set" 532 or $set_to_display eq 'There are no local sets yet') { 533 $self->adderrmsg("You need to select a set from this course to view."); 534 } else { 535 my @problemList = $db->listGlobalProblems($set_to_display); 536 my $problem; 537 @pg_files=(); 538 for $problem (@problemList) { 539 my $problemRecord = $db->getGlobalProblem($set_to_display, $problem); # checked 540 die "global $problem for set $set_to_display not found." unless 541 $problemRecord; 542 push @pg_files, $problemRecord->source_file; 543 544 } 545 $use_previous_problems=0; 546 } 547 548 ##### View whole chapter from the library 549 ## This will change somewhat later 550 551 } elsif ($r->param('lib_view')) { 552 553 @pg_files=(); 554 my $chap = $r->param('library_chapters') || ""; 555 $chap = "" if($chap eq "All Chapters"); 556 my $sect = $r->param('library_sections') || ""; 557 $sect = "" if($sect eq "All Sections"); 558 my @dbsearch = WeBWorK::Utils::ListingDB::getSectionListings($r->{ce}, "$chap", "$sect"); 559 my ($result, $tolibpath); 560 for $result (@dbsearch) { 561 $tolibpath = "Library/$result->{path}/$result->{filename}"; 562 563 ## Too clunky!!!! 564 push @pg_files, $tolibpath; 565 } 566 $use_previous_problems=0; 567 568 ##### Edit the current local problem set 569 570 } elsif ($r->param('edit_local')) { ## Jump to set edit page 571 572 ; # already handled 573 574 575 ##### Make a new local problem set 576 577 } elsif ($r->param('new_local_set')) { 578 if ($r->param('new_set_name') !~ /^[\w.-]*$/) { 579 $self->adderrmsg("The name ".$r->param('new_set_name')." is not a valid set name. Use only letters, digits, -, _, and ."); 580 } else { 581 my $newSetName = $r->param('new_set_name'); 582 $newSetName =~ s/^set//; 583 $newSetName =~ s/\.def$//; 584 $r->param('local_sets',$newSetName); 585 my $newSetRecord = $db->getGlobalSet($newSetName); 586 if (defined($newSetRecord)) { 587 $self->adderrmsg("The set name $newSetName is already in use. Pick a different name if you would like to start a new set."); 588 } else { # Do it! 589 $newSetRecord = $db->{set}->{record}->new(); 590 $newSetRecord->set_id($newSetName); 591 $newSetRecord->set_header(""); 592 $newSetRecord->problem_header(""); 593 $newSetRecord->open_date(time()+60*60*24*7); # in one week 594 $newSetRecord->due_date(time()+60*60*24*7*2); # in two weeks 595 $newSetRecord->answer_date(time()+60*60*24*7*3); # in three weeks 596 eval {$db->addGlobalSet($newSetRecord)}; 597 } 598 } 599 600 ##### Add selected problems to the current local set 601 602 } elsif ($r->param('update')) { 603 ## first handle problems to be added before we hide them 604 my($localSet, @selected); 605 606 @pg_files = grep {($_->[1] & ADDED) != 0 } @{$self->{past_problems}}; 607 @selected = map {$_->[0]} @pg_files; 608 609 my @action_files = grep {$_->[1] > 0 } @{$self->{past_problems}}; 610 if(scalar(@action_files) == 0) { 611 $self->adderrmsg('Act on marked problems requested, but no problems were marked.'); 612 } 613 614 if (scalar(@selected)>0) { # if some are to be added, they need a place to go 615 $localSet = $r->param('local_sets'); 616 if (not defined($localSet)) { 617 $self->adderrmsg('You are trying to add problems to something, but you did not select a "Current Set" name as a target.'); 618 } else { 619 my $newSetRecord = $db->getGlobalSet($localSet); 620 if (not defined($newSetRecord)) { 621 $self->adderrmsg("You are trying to add problems to $localSet, but that set does not seem to exist! I bet you used your \"Back\" button."); 622 } else { 623 my $addcount = add_selected($self, $db, $localSet); 624 if($addcount > 0) { 625 $self->addgoodmsg("Successfully added $addcount problem".(($addcount>1)?'s':''). 626 " to $localSet."); 627 } 628 } 629 } 630 } 631 ## now handle problems to be hidden 632 633 ## only keep the ones which are not hidden 634 @pg_files = grep {($_->[1] & HIDDEN) ==0 } @{$self->{past_problems}}; 635 @pg_files = map {$_->[0]} @pg_files; 636 @all_past_list = (@all_past_list[0..($first_shown-1)], 637 @pg_files, 638 @all_past_list[($last_shown+1)..(scalar(@all_past_list)-1)]); 639 $last_shown = $first_shown+MAX_SHOW -1; 640 $last_shown = (scalar(@all_past_list)-1) if($last_shown>=scalar(@all_past_list)); 641 642 ## FIXME: you should say something if no problems are selected 643 ## maybe the add button should be disabled if there are no problems 644 ## showing 645 646 647 } elsif ($r->param('next_page')) { 648 $first_shown = $last_shown+1; 649 $last_shown = $first_shown+MAX_SHOW-1; 650 $last_shown = (scalar(@all_past_list)-1) if($last_shown>=scalar(@all_past_list)); 651 } elsif ($r->param('prev_page')) { 652 $last_shown = $first_shown-1; 653 $first_shown = $last_shown - MAX_SHOW+1; 654 655 $first_shown = 0 if($first_shown<0); 656 657 ##### No action requested, probably our first time here 658 659 } else { 660 #my $c = $r->connection; 661 #print "Debug info: ". $r->get_remote_host ."<p>". $c->remote_ip ; 662 ; 663 } ##### end of the if elsif ... 664 665 666 ############# List of local sets 667 668 my @all_set_defs = $db->listGlobalSets; 669 for ($j=0; $j<scalar(@all_set_defs); $j++) { 670 $all_set_defs[$j] =~ s|^set||; 671 $all_set_defs[$j] =~ s|\.def||; 672 } 673 674 if ($use_previous_problems) { 675 @pg_files = @all_past_list; 676 } else { 677 $first_shown = 0; 678 $last_shown = scalar(@pg_files)<MAX_SHOW ? scalar(@pg_files) : MAX_SHOW; 679 $last_shown--; # to make it an array index 680 } 681 ############# Now store data in self for retreival by body 682 $self->{first_shown} = $first_shown; 683 $self->{last_shown} = $last_shown; 684 $self->{browse_which} = $browse_which; 685 $self->{problem_seed} = $problem_seed; 686 $self->{pg_files} = \@pg_files; 687 $self->{all_set_defs} = \@all_set_defs; 688 689 } 690 691 692 sub title { 693 return "Problem Set Maker"; 694 } 695 696 sub body { 697 my ($self) = @_; 698 699 my $r = $self->r; 700 my $ce = $r->ce; # course environment 701 my $db = $r->db; # database 702 my $j; # garden variety counter 703 704 my $userName = $r->param('user'); 705 706 my $user = $db->getUser($userName); # checked 707 die "record for user $userName (real user) does not exist." 708 unless defined $user; 709 710 ### Check that this is a professor 711 my $authz = $r->authz; 712 unless ($authz->hasPermissions($userName, "modify_problem_sets")) { 713 print "User $userName returned " . 714 $authz->hasPermissions($user, "modify_problem_sets") . 715 " for permission"; 716 return(CGI::div({class=>'ResultsWithError'}, 717 CGI::em("You are not authorized to access the Instructor tools."))); 718 } 719 720 ########## Extract information computed in pre_header_initialize 721 722 my $first_shown = $self->{first_shown}; 723 my $last_shown = $self->{last_shown}; 724 my $browse_which = $self->{browse_which}; 725 my $problem_seed = $self->{problem_seed}; 726 my @pg_files = @{$self->{pg_files}}; 727 my @all_set_defs = @{$self->{all_set_defs}}; 728 729 my @pg_html=($last_shown>=$first_shown) ? 730 renderProblems($r,$user, @pg_files[$first_shown..$last_shown]) : (); 731 732 ########## Top part 733 print CGI::startform({-method=>"POST", -action=>$r->uri}), 734 $self->hidden_authen_fields, 735 '<div align="center">', 736 CGI::start_table({-border=>2}); 737 $self->make_top_row('all_set_defs'=>\@all_set_defs, 738 'browse_which'=> $browse_which); 739 print CGI::hidden(-name=>'browse_which', -default=>[$browse_which]), 740 CGI::hidden(-name=>'problem_seed', -default=>[$problem_seed]); 741 for ($j = 0 ; $j < scalar(@pg_files) ; $j++) { 742 print CGI::hidden(-name=>"all_past_list$j", -default=>$pg_files[$j]); 743 } 744 745 print CGI::hidden(-name=>'first_shown', -default=>[$first_shown]); 746 print CGI::hidden(-name=>'last_shown', -default=>[$last_shown]); 747 748 749 ########## Now print problems 750 my $jj; 751 for ($jj=0; $jj<scalar(@pg_html); $jj++) { 752 $pg_files[$jj] =~ s|^$ce->{courseDirs}->{templates}/?||; 753 $self->make_data_row($pg_files[$jj+$first_shown], $pg_html[$jj], $jj+1); 754 } 755 756 ########## Finish things off 757 print CGI::end_table(); 758 print '</div>'; 759 # if($first_shown>0 or (1+$last_shown)<scalar(@pg_files)) { 760 my ($next_button, $prev_button) = ("", ""); 761 if ($first_shown > 0) { 762 $prev_button = CGI::submit(-name=>"prev_page", -style=>"width:15ex", 763 -value=>"Previous page"); 764 } 765 if ((1+$last_shown)<scalar(@pg_files)) { 766 $next_button = CGI::submit(-name=>"next_page", -style=>"width:15ex", 767 -value=>"Next page"); 768 } 769 if (scalar(@pg_files)>0) { 770 print CGI::p(($first_shown+1)."-".($last_shown+1)." of ".scalar(@pg_files). 771 " shown.", $prev_button, " ", $next_button); 772 } 773 # } 774 print CGI::endform(), "\n"; 775 776 return ""; 777 } 778 779 ############################################## End of Body 780 781 # SKEL: To emit your own HTTP header, uncomment this: 782 # 783 #sub header { 784 # my ($self) = @_; 785 # 786 # # Generate your HTTP header here. 787 # 788 # # If you return something, it will be used as the HTTP status code for this 789 # # request. The Apache::Constants module might be useful for gerating status 790 # # codes. If you don't return anything, the status code "OK" will be used. 791 # return ""; 792 #} 793 794 # SKEL: If you need to do any processing after the HTTP header is sent, but before 795 # any template processing occurs, or you need to calculate values that will be 796 # used in multiple methods, do it in this method: 797 # 798 #sub initialize { 799 #my ($self) = @_; 800 #} 801 802 # SKEL: If you need to add tags to the document <HEAD>, uncomment this method: 803 # 804 #sub head { 805 # my ($self) = @_; 806 # 807 # # You can print head tags here, like <META>, <SCRIPT>, etc. 808 # 809 # return ""; 810 #} 811 812 # SKEL: To fill in the "info" box (to the right of the main body), use this 813 # method: 814 # 815 #sub info { 816 # my ($self) = @_; 817 # 818 # # Print HTML here. 819 # 820 # return ""; 821 #} 822 823 # SKEL: To provide navigation links, use this method: 824 # 825 #sub nav { 826 # my ($self, $args) = @_; 827 # 828 # # See the documentation of path() and pathMacro() in 829 # # WeBWorK::ContentGenerator for more information. 830 # 831 # return ""; 832 #} 833 834 # SKEL: For a little box for display options, etc., use this method: 835 # 836 #sub options { 837 # my ($self) = @_; 838 # 839 # # Print HTML here. 840 # 841 # return ""; 842 #} 843 844 # SKEL: For a list of sibling objects, use this method: 845 # 846 #sub siblings { 847 # my ($self, $args) = @_; 848 # 849 # # See the documentation of siblings() and siblingsMacro() in 850 # # WeBWorK::ContentGenerator for more information. 851 # # 852 # # Refer to implementations in ProblemSet and Problem. 853 # 854 # return ""; 855 #} 856 857 =head1 AUTHOR 858 859 Written by John Jones, jj (at) asu.edu. 860 861 =cut 862 863 864 865 1;
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