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These files have timing code in them. You have to change the variable $timer* from 0 to 1 in order to have the times reported. --Mike
1 ################################################################################ 2 # WeBWorK mod_perl (c) 2000-2002 WeBWorK Project 3 # $Id$ 4 ################################################################################ 5 6 package WeBWorK::ContentGenerator::Problem; 7 use base qw(WeBWorK::ContentGenerator); 8 9 =head1 NAME 10 11 WeBWorK::ContentGenerator::Problem - Allow a student to interact with a problem. 12 13 =cut 14 my $timer0_ON=0; # times pg translation phase 15 use strict; 16 use warnings; 17 use CGI qw(); 18 use File::Path qw(rmtree); 19 use WeBWorK::Form; 20 use WeBWorK::PG; 21 use WeBWorK::PG::IO; 22 use WeBWorK::Utils qw(writeLog encodeAnswers decodeAnswers ref2string makeTempDirectory); 23 use WeBWorK::DB::Utils qw(global2user user2global findDefaults); 24 use WeBWorK::Timing; 25 ############################################################ 26 # 27 # user 28 # effectiveUser 29 # key 30 # 31 # displayMode 32 # showOldAnswers 33 # showCorrectAnswers 34 # showHints 35 # showSolutions 36 # 37 # AnSwEr# - answer blanks in problem 38 # 39 # redisplay - name of the "Redisplay Problem" button 40 # submitAnswers - name of "Submit Answers" button 41 # checkAnswers - name of the "Check Answers" button 42 # previewAnswers - name of the "Preview Answers" button 43 # 44 ############################################################ 45 46 sub pre_header_initialize { 47 my ($self, $setName, $problemNumber) = @_; 48 my $r = $self->{r}; 49 my $courseEnv = $self->{ce}; 50 my $db = $self->{db}; 51 my $userName = $r->param('user'); 52 my $effectiveUserName = $r->param('effectiveUser'); 53 my $key = $r->param('key'); 54 my $user = $db->getUser($userName); 55 my $effectiveUser = $db->getUser($effectiveUserName); 56 my $permissionLevel = $db->getPermissionLevel($userName)->permission(); 57 58 # obtain the merged set for $effectiveUser 59 my $set = $db->getMergedSet($effectiveUserName, $setName); 60 61 # obtain the merged problem for $effectiveUser 62 my $problem = $db->getMergedProblem($effectiveUserName, $setName, $problemNumber); 63 64 my $editMode = $r->param("editMode"); 65 66 if ($permissionLevel > 0 and defined $editMode) { 67 # professors are allowed to fabricate sets and problems not 68 # assigned to them (or anyone). this allows them to use the 69 # editor to 70 71 # if that is not yet defined obtain the global set, convert 72 # it to a user set, and add fake user data 73 unless (defined $set) { 74 my $userSetClass = $db->{set_user}->{record}; 75 $set = global2user($userSetClass, 76 $db->getGlobalSet($setName)); 77 die "Set $setName does not exist" 78 unless defined $set; 79 $set->psvn(0); 80 } 81 82 # if that is not yet defined obtain the global problem, 83 # convert it to a user problem, and add fake user data 84 unless (defined $problem) { 85 my $userProblemClass = $db->{problem_user}->{record}; 86 $problem = global2user($userProblemClass, 87 $db->getGlobalProblem($setName,$problemNumber)); 88 die "Problem $problemNumber in set $setName does not exist" 89 unless defined $problem; 90 $problem->user_id($effectiveUserName); 91 $problem->problem_seed(0); 92 $problem->status(0); 93 $problem->attempted(0); 94 $problem->last_answer(""); 95 $problem->num_correct(0); 96 $problem->num_incorrect(0); 97 } 98 99 # now we're sure we have valid UserSet and UserProblem objects 100 # yay! 101 102 # now deal with possible editor overrides: 103 104 # if the caller is asking to override the source file, and 105 # editMode calls for a temporary file, do so 106 my $sourceFilePath = $r->param("sourceFilePath"); 107 if (defined $sourceFilePath and $editMode eq "temporaryFile") { 108 $problem->source_file($sourceFilePath); 109 } 110 111 # if the caller is asking to override the problem seed, do so 112 my $problemSeed = $r->param("problemSeed"); 113 if (defined $problemSeed) { 114 $problem->problem_seed($problemSeed); 115 } 116 } else { 117 # students can't view problems not assigned to them 118 die "Set $setName is not assigned to $effectiveUserName" 119 unless defined $set; 120 die "Problem $problemNumber in set $setName is not assigned to $effectiveUserName" 121 unless defined $problem; 122 } 123 124 $self->{userName} = $userName; 125 $self->{effectiveUserName} = $effectiveUserName; 126 $self->{user} = $user; 127 $self->{effectiveUser} = $effectiveUser; 128 $self->{permissionLevel} = $permissionLevel; 129 $self->{set} = $set; 130 $self->{problem} = $problem; 131 $self->{editMode} = $editMode; 132 133 ##### form processing ##### 134 135 # set options from form fields (see comment at top of file for names) 136 my $displayMode = $r->param("displayMode") || $courseEnv->{pg}->{options}->{displayMode}; 137 my $redisplay = $r->param("redisplay"); 138 my $submitAnswers = $r->param("submitAnswers"); 139 my $checkAnswers = $r->param("checkAnswers"); 140 my $previewAnswers = $r->param("previewAnswers"); 141 142 # fields which may be defined when using Problem Editor 143 #my $override_seed = ($permissionLevel>=10) ? $r->param('problemSeed') : undef; 144 #my $override_problem_source = ($permissionLevel>=10) ? $r->param('sourceFilePath') : undef; 145 #my $editMode = undef; 146 #my $submit_button = $r->param('submit_button'); 147 #if ( defined($submit_button ) ) { 148 # $editMode = "temporaryFile" if $submit_button eq 'Refresh'; 149 # $editMode = 'savedFile' if $submit_button eq 'Save'; 150 #} 151 # 152 ##override using the source file data from the form field 153 #$problem->source_file($override_problem_source) if defined($override_problem_source); 154 #$problem->problem_seed($override_seed) if defined($override_seed); 155 # 156 ## store path to source file for title. 157 #$self->{problem_source_name} = $problem->source_file; 158 #$self->{edit_mode} = $editMode; 159 #$self->{current_problem_source} = (defined($override_problem_source) ) ? 160 161 # coerce form fields into CGI::Vars format 162 my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; 163 164 $self->{displayMode} = $displayMode; 165 $self->{redisplay} = $redisplay; 166 $self->{submitAnswers} = $submitAnswers; 167 $self->{checkAnswers} = $checkAnswers; 168 $self->{previewAnswers} = $previewAnswers; 169 $self->{formFields} = $formFields; 170 171 ##### permissions ##### 172 173 # are we allowed to view this problem? 174 $self->{isOpen} = time >= $set->open_date || $permissionLevel > 0; 175 return unless $self->{isOpen}; 176 177 # what does the user want to do? 178 my %want = ( 179 showOldAnswers => $r->param("showOldAnswers") || $courseEnv->{pg}->{options}->{showOldAnswers}, 180 showCorrectAnswers => $r->param("showCorrectAnswers") || $courseEnv->{pg}->{options}->{showCorrectAnswers}, 181 showHints => $r->param("showHints") || $courseEnv->{pg}->{options}->{showHints}, 182 showSolutions => $r->param("showSolutions") || $courseEnv->{pg}->{options}->{showSolutions}, 183 recordAnswers => $submitAnswers, 184 checkAnswers => $checkAnswers, 185 ); 186 187 # are certain options enforced? 188 my %must = ( 189 showOldAnswers => 0, 190 showCorrectAnswers => 0, 191 showHints => 0, 192 showSolutions => 0, 193 recordAnswers => mustRecordAnswers($permissionLevel), 194 checkAnswers => 0, 195 ); 196 197 # does the user have permission to use certain options? 198 my %can = ( 199 showOldAnswers => 1, 200 showCorrectAnswers => canShowCorrectAnswers($permissionLevel, $set->answer_date), 201 showHints => 1, 202 showSolutions => canShowSolutions($permissionLevel, $set->answer_date), 203 recordAnswers => canRecordAnswers($permissionLevel, $set->open_date, $set->due_date, 204 $problem->max_attempts, $problem->num_correct + $problem->num_incorrect + 1), 205 # attempts=num_correct+num_incorrect+1, as this happens before updating $problem 206 checkAnswers => canCheckAnswers($permissionLevel, $set->answer_date), 207 ); 208 209 # final values for options 210 my %will; 211 foreach (keys %must) { 212 $will{$_} = $can{$_} && ($want{$_} || $must{$_}); 213 } 214 215 ##### sticky answers ##### 216 217 if (not $submitAnswers and $will{showOldAnswers}) { 218 # do this only if new answers are NOT being submitted 219 my %oldAnswers = decodeAnswers($problem->last_answer); 220 $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; 221 } 222 223 ##### translation ##### 224 225 $WeBWorK::timer0->continue("begin pg processing") if $timer0_ON; 226 my $pg = WeBWorK::PG->new( 227 $courseEnv, 228 $effectiveUser, 229 $key, 230 $set, 231 $problem, 232 $set->psvn, # FIXME: this field should be removed 233 $formFields, 234 { # translation options 235 displayMode => $displayMode, 236 showHints => $will{showHints}, 237 showSolutions => $will{showSolutions}, 238 refreshMath2img => $will{showHints} || $will{showSolutions}, 239 processAnswers => 1, 240 }, 241 ); 242 243 $WeBWorK::timer0->continue("end pg processing") if $timer0_ON; 244 ##### fix hint/solution options ##### 245 246 $can{showHints} &&= $pg->{flags}->{hintExists}; 247 $can{showSolutions} &&= $pg->{flags}->{solutionExists}; 248 249 ##### store fields ##### 250 251 $self->{want} = \%want; 252 $self->{must} = \%must; 253 $self->{can} = \%can; 254 $self->{will} = \%will; 255 256 $self->{pg} = $pg; 257 } 258 259 #sub if_warnings($$) { 260 # my ($self, $arg) = @_; 261 # return 0 unless $self->{isOpen}; 262 # return $self->{pg}->{warnings} ne ""; 263 #} 264 265 sub if_errors($$) { 266 my ($self, $arg) = @_; 267 return 0 unless $self->{isOpen}; 268 return $self->{pg}->{flags}->{error_flag}; 269 } 270 271 sub head { 272 my $self = shift; 273 return "" unless $self->{isOpen}; 274 return $self->{pg}->{head_text} if $self->{pg}->{head_text}; 275 } 276 277 sub options { 278 my $self = shift; 279 return join("", 280 CGI::start_form("POST", $self->{r}->uri), 281 $self->hidden_authen_fields, 282 CGI::hr(), 283 CGI::start_div({class=>"viewOptions"}), 284 $self->viewOptions(), 285 CGI::end_div(), 286 CGI::end_form() 287 ); 288 } 289 290 sub path { 291 my $self = shift; 292 my $args = $_[-1]; 293 my $setName = $self->{set}->set_id; 294 my $problemNumber = $self->{problem}->problem_id; 295 296 my $ce = $self->{ce}; 297 my $root = $ce->{webworkURLs}->{root}; 298 my $courseName = $ce->{courseName}; 299 return $self->pathMacro($args, 300 "Home" => "$root", 301 $courseName => "$root/$courseName", 302 $setName => "$root/$courseName/$setName", 303 "Problem $problemNumber" => "", 304 ); 305 } 306 307 sub siblings { 308 my $self = shift; 309 my $setName = $self->{set}->set_id; 310 my $problemNumber = $self->{problem}->problem_id; 311 312 my $ce = $self->{ce}; 313 my $db = $self->{db}; 314 my $root = $ce->{webworkURLs}->{root}; 315 my $courseName = $ce->{courseName}; 316 print CGI::strong("Problems"), CGI::br(); 317 318 my $effectiveUser = $self->{r}->param("effectiveUser"); 319 my @problems; 320 # push @problems, $db->getMergedProblem($effectiveUser, $setName, $_) 321 # foreach ($db->listUserProblems($effectiveUser, $setName)); 322 @problems = $db->listUserProblems($effectiveUser, $setName); # this is much faster 323 # foreach my $problem (sort { $a->problem_id <=> $b->problem_id } @problems) { 324 foreach my $problem (sort { $a <=> $b } @problems) { 325 print CGI::a({-href=>"$root/$courseName/$setName/".$problem."/?" 326 . $self->url_authen_args . "&displayMode=" . $self->{displayMode}}, 327 "Problem ".$problem), CGI::br(); 328 } 329 330 ''; 331 } 332 333 sub nav { 334 $WeBWorK::timer0->continue("begin nav subroutine") if $timer0_ON; 335 my $self = shift; 336 my $args = $_[-1]; 337 my $setName = $self->{set}->set_id; 338 my $problemNumber = $self->{problem}->problem_id; 339 340 my $ce = $self->{ce}; 341 my $db = $self->{db}; 342 my $root = $ce->{webworkURLs}->{root}; 343 my $courseName = $ce->{courseName}; 344 345 my $wwdb = $self->{wwdb}; 346 my $effectiveUser = $self->{r}->param("effectiveUser"); 347 my $tail = "&displayMode=".$self->{displayMode}; 348 349 my @links = ("Problem List" , "$root/$courseName/$setName", "navProbList"); 350 351 # FIXME: this could be faster 352 my $prevProblem = $db->getMergedProblem($effectiveUser, $setName, $problemNumber-1); 353 my $nextProblem = $db->getMergedProblem($effectiveUser, $setName, $problemNumber+1); 354 unshift @links, "Previous Problem" , ($prevProblem 355 ? "$root/$courseName/$setName/".$prevProblem->problem_id 356 : "") , "navPrev"; 357 push @links, "Next Problem" , ($nextProblem 358 ? "$root/$courseName/$setName/".$nextProblem->problem_id 359 : "") , "navNext"; 360 361 my $result = $self->navMacro($args, $tail, @links); 362 $WeBWorK::timer0->continue("end nav subroutine") if $timer0_ON; 363 return $result; 364 365 } 366 367 sub title { 368 my $self = shift; 369 my $setName = $self->{set}->set_id; 370 my $problemNumber = $self->{problem}->problem_id; 371 372 return "$setName : Problem $problemNumber"; 373 } 374 375 sub body { 376 my $self = shift; 377 378 return CGI::p(CGI::font({-color=>"red"}, "This problem is not available because the problem set that contains it is not yet open.")) 379 unless $self->{isOpen}; 380 381 # unpack some useful variables 382 my $r = $self->{r}; 383 my $db = $self->{db}; 384 my $set = $self->{set}; 385 my $problem = $self->{problem}; 386 my $editMode = $self->{editMode}; 387 my $permissionLevel = $self->{permissionLevel}; 388 my $submitAnswers = $self->{submitAnswers}; 389 my $checkAnswers = $self->{checkAnswers}; 390 my $previewAnswers = $self->{previewAnswers}; 391 my %want = %{ $self->{want} }; 392 my %can = %{ $self->{can} }; 393 my %must = %{ $self->{must} }; 394 my %will = %{ $self->{will} }; 395 my $pg = $self->{pg}; 396 397 ##### translation errors? ##### 398 399 if ($pg->{flags}->{error_flag}) { 400 return $self->errorOutput($pg->{errors}, $pg->{body_text}); 401 } 402 403 ##### answer processing ##### 404 $WeBWorK::timer0->continue("begin answer processing") if $timer0_ON; 405 # if answers were submitted: 406 if ($submitAnswers) { 407 # get a "pure" (unmerged) UserProblem to modify 408 # this will be undefined if the problem has not been assigned to this user 409 my $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id); 410 # store answers in DB for sticky answers 411 my %answersToStore; 412 my %answerHash = %{ $pg->{answers} }; 413 $answersToStore{$_} = $answerHash{$_}->{original_student_ans} 414 foreach (keys %answerHash); 415 my $answerString = encodeAnswers(%answersToStore, 416 @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }); 417 418 $problem->last_answer($answerString); 419 # if $pureProblem is defined ( there is a user ) then record the last answer. 420 # FIXME (we're assuming that not being able to get a pure problem is enough to determine 421 # whether or not the problem database needs to be updated. This should be thought through 422 # more carefully to be sure. 423 if ( defined($pureProblem) ) { 424 $pureProblem->last_answer($answerString); 425 $db->putUserProblem($pureProblem); 426 #die "pureProblem = ", defined($pureProblem); 427 428 429 # store state in DB if it makes sense 430 if ($will{recordAnswers}) { 431 $problem->status($pg->{state}->{recorded_score}); 432 $problem->attempted(1); 433 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 434 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 435 $pureProblem->status($pg->{state}->{recorded_score}); 436 $pureProblem->attempted(1); 437 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans}); 438 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 439 $db->putUserProblem($pureProblem); 440 # write to the transaction log, just to make sure 441 writeLog($self->{ce}, "transaction", 442 $problem->problem_id."\t". 443 $problem->set_id."\t". 444 $problem->user_id."\t". 445 $problem->source_file."\t". 446 $problem->value."\t". 447 $problem->max_attempts."\t". 448 $problem->problem_seed."\t". 449 $pureProblem->status."\t". 450 $pureProblem->attempted."\t". 451 $pureProblem->last_answer."\t". 452 $pureProblem->num_correct."\t". 453 $pureProblem->num_incorrect 454 ); 455 } 456 } 457 } 458 # logging student answers 459 my $pastAnswerLog = undef; 460 if (defined( $self->{ce}->{webworkFiles}->{logs}->{'pastAnswerList'} )) { 461 462 $pastAnswerLog = $self->{ce}->{webworkFiles}->{logs}->{'pastAnswerList'}; 463 464 if ($submitAnswers and defined($pastAnswerLog) ) { 465 my $answerString = ""; 466 my %answerHash = %{ $pg->{answers} }; 467 $answerString = $answerString . $answerHash{$_}->{original_student_ans}."\t" 468 foreach (sort keys %answerHash); 469 $answerString = '' unless defined($answerString); # insure string is defined. 470 writeLog($self->{ce}, "pastAnswerList", 471 '|'.$problem->user_id. 472 '|'.$problem->set_id. 473 '|'.$problem->problem_id.'|'."\t". 474 time()."\t". 475 $answerString, 476 477 ); 478 479 } 480 481 } 482 # end logging student answers 483 $WeBWorK::timer0->continue("end answer processing") if $timer0_ON; 484 ##### output ##### 485 486 print CGI::start_div({class=>"problemHeader"}); 487 488 # custom message for editor 489 if ($permissionLevel >= 10 and defined $editMode) { 490 if ($editMode eq "temporaryFile") { 491 print CGI::p(CGI::i("Editing temporary file: ", $problem->source_file)); 492 } elsif ($editMode eq "savedFile") { 493 print CGI::p(CGI::i("Problem saved to: ", $problem->source_file)); 494 } 495 } 496 497 # attempt summary 498 if ($submitAnswers or $will{showCorrectAnswers}) { 499 # print this if user submitted answers OR requested correct answers 500 print $self->attemptResults($pg, $submitAnswers, 501 $will{showCorrectAnswers}, 502 $pg->{flags}->{showPartialCorrectAnswers}, 1, 1); 503 } elsif ($checkAnswers) { 504 # print this if user previewed answers 505 print $self->attemptResults($pg, 1, 0, 1, 1, 1); 506 # show attempt answers 507 # don't show correct answers 508 # show attempt results (correctness) 509 # don't show attempt previews 510 } elsif ($previewAnswers) { 511 # print this if user previewed answers 512 print $self->attemptResults($pg, 1, 0, 0, 0, 1); 513 # show attempt answers 514 # don't show correct answers 515 # don't show attempt results (correctness) 516 # show attempt previews 517 } 518 519 print CGI::end_div(); 520 521 print CGI::start_div({class=>"problem"}); 522 523 # main form 524 print 525 CGI::startform("POST", $r->uri), 526 $self->hidden_authen_fields, 527 CGI::p($pg->{body_text}), 528 CGI::p($pg->{result}->{msg} ? CGI::b("Note: ") : "", CGI::i($pg->{result}->{msg})), 529 CGI::p( 530 ($can{recordAnswers} 531 ? CGI::submit(-name=>"submitAnswers", 532 -label=>"Submit Answers") 533 : ""), 534 ($can{checkAnswers} 535 ? CGI::submit(-name=>"checkAnswers", 536 -label=>"Check Answers") 537 : ""), 538 CGI::submit(-name=>"previewAnswers", 539 -label=>"Preview Answers"), 540 ); 541 print CGI::end_div(); 542 543 print CGI::start_div({class=>"scoreSummary"}); 544 545 # score summary 546 my $attempts = $problem->num_correct + $problem->num_incorrect; 547 my $attemptsNoun = $attempts != 1 ? "times" : "time"; 548 my $lastScore = sprintf("%.0f%%", $problem->status * 100); # Round to whole number 549 my ($attemptsLeft, $attemptsLeftNoun); 550 if ($problem->max_attempts == -1) { 551 # unlimited attempts 552 $attemptsLeft = "unlimited"; 553 $attemptsLeftNoun = "attempts"; 554 } else { 555 $attemptsLeft = $problem->max_attempts - $attempts; 556 $attemptsLeftNoun = $attemptsLeft == 1 ? "attempt" : "attempts"; 557 } 558 559 my $setClosed = 0; 560 my $setClosedMessage; 561 if (time < $set->open_date or time > $set->due_date) { 562 $setClosed = 1; 563 $setClosedMessage = "This problem set is closed."; 564 if ($permissionLevel > 0) { 565 $setClosedMessage .= " However, since you are a privileged user, additional attempts will be recorded."; 566 } else { 567 $setClosedMessage .= " Additional attempts will not be recorded."; 568 } 569 } 570 print CGI::p( 571 "You have attempted this problem $attempts $attemptsNoun.", CGI::br(), 572 $problem->attempted 573 ? "Your recorded score is $lastScore." . CGI::br() 574 : "", 575 $setClosed ? $setClosedMessage : "You have $attemptsLeft $attemptsLeftNoun remaining." 576 ); 577 print CGI::end_div(); 578 579 # save state for viewOptions 580 print CGI::hidden( 581 -name => "showOldAnswers", 582 -value => $will{showOldAnswers} 583 ), 584 CGI::hidden( 585 -name => "showCorrectAnswers", 586 -value => $will{showCorrectAnswers} 587 ), 588 CGI::hidden( 589 -name => "showHints", 590 -value => $will{showHints}), 591 CGI::hidden( 592 -name => "showSolutions", 593 -value => $will{showSolutions}, 594 ), 595 CGI::hidden( 596 -name => "displayMode", 597 -value => $self->{displayMode} 598 ); 599 600 # end of main form 601 print CGI::endform(); 602 603 # stuff we need below (pull these out at the beginning?) 604 my $ce = $self->{ce}; 605 my $root = $ce->{webworkURLs}->{root}; 606 my $courseName = $ce->{courseName}; 607 608 print CGI::start_div({class=>"problemFooter"}); 609 610 # arguments for answer inspection button 611 my $prof_url = $ce->{webworkURLs}->{oldProf}; 612 my $cgi_url = $prof_url; 613 $cgi_url=~ s|/[^/]*$||; # clip profLogin.pl 614 my $authen_args = $self->url_authen_args(); 615 my $showPastAnswersURL = "$cgi_url/showPastAnswers.pl"; 616 617 # print answer inspection button 618 if ($self->{permissionLevel} > 0) { 619 print "\n", 620 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n", 621 $self->hidden_authen_fields,"\n", 622 CGI::hidden(-name => 'course', -value=>$courseName), "\n", 623 CGI::hidden(-name => 'probNum', -value=>$problem->problem_id), "\n", 624 CGI::hidden(-name => 'setNum', -value=>$problem->set_id), "\n", 625 CGI::hidden(-name => 'User', -value=>$problem->user_id), "\n", 626 CGI::p( {-align=>"left"}, 627 CGI::submit(-name => 'action', -value=>'Show Past Answers') 628 ), "\n", 629 CGI::endform(); 630 } 631 632 #print CGI::end_div(); 633 # 634 #print CGI::start_div(); 635 636 # arguments for feedback form 637 my $feedbackURL = "$root/$courseName/feedback/"; 638 639 #print feedback form 640 print 641 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 642 $self->hidden_authen_fields,"\n", 643 CGI::hidden("module", __PACKAGE__),"\n", 644 CGI::hidden("set", $set->set_id),"\n", 645 CGI::hidden("problem", $problem->problem_id),"\n", 646 CGI::hidden("displayMode", $self->{displayMode}),"\n", 647 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 648 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 649 CGI::hidden("showHints", $will{showHints}),"\n", 650 CGI::hidden("showSolutions", $will{showSolutions}),"\n", 651 CGI::p({-align=>"left"}, 652 CGI::submit(-name=>"feedbackForm", -label=>"Contact instructor") 653 ), 654 CGI::endform(),"\n"; 655 656 # FIXME print editor link 657 # print editor link if the user is an instructor AND the file is not in temporary editing mode 658 if ($self->{permissionLevel}>=10 and ( (not defined($self->{edit_mode})) or $self->{edit_mode} eq 'savedFile') ) { 659 print CGI::a({-href=>$ce->{webworkURLs}->{root}."/$courseName/instructor/pgProblemEditor/".$set->set_id. 660 '/'.$problem->problem_id.'?'.$self->url_authen_args},'Edit this problem'); 661 } 662 663 print CGI::end_div(); 664 665 # warning output 666 #if ($pg->{warnings} ne "") { 667 # print CGI::hr(), $self->warningOutput($pg->{warnings}); 668 #} 669 670 # debugging stuff 671 if (0) { 672 print 673 CGI::hr(), 674 CGI::h2("debugging information"), 675 CGI::h3("form fields"), 676 ref2string($self->{formFields}), 677 CGI::h3("user object"), 678 ref2string($self->{user}), 679 CGI::h3("set object"), 680 ref2string($set), 681 CGI::h3("problem object"), 682 ref2string($problem), 683 CGI::h3("PG object"), 684 ref2string($pg, {'WeBWorK::PG::Translator' => 1}); 685 } 686 687 return ""; 688 } 689 690 ##### output utilities ##### 691 692 sub attemptResults($$$$$$) { 693 my $self = shift; 694 my $pg = shift; 695 my $showAttemptAnswers = shift; 696 my $showCorrectAnswers = shift; 697 my $showAttemptResults = $showAttemptAnswers && shift; 698 my $showSummary = shift; 699 my $showAttemptPreview = shift || 0; 700 my $problemResult = $pg->{result}; # the overall result of the problem 701 my @answerNames = @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }; 702 703 my $showMessages = $showAttemptAnswers && grep { $pg->{answers}->{$_}->{ans_message} } @answerNames; 704 705 my $header = CGI::th("Part"); 706 $header .= $showAttemptAnswers ? CGI::th("Entered") : ""; 707 $header .= $showAttemptPreview ? CGI::th("Answer Preview") : ""; 708 $header .= $showCorrectAnswers ? CGI::th("Correct") : ""; 709 $header .= $showAttemptResults ? CGI::th("Result") : ""; 710 $header .= $showMessages ? CGI::th("messages") : ""; 711 my @tableRows = ( $header ); 712 my $numCorrect; 713 foreach my $name (@answerNames) { 714 my $answerResult = $pg->{answers}->{$name}; 715 my $studentAnswer = $answerResult->{student_ans}; # original_student_ans 716 my $preview = ($showAttemptPreview 717 ? $self->previewAnswer($answerResult) 718 : ""); 719 my $correctAnswer = $answerResult->{correct_ans}; 720 my $answerScore = $answerResult->{score}; 721 my $answerMessage = $showMessages ? $answerResult->{ans_message} : ""; 722 723 $numCorrect += $answerScore > 0; 724 my $resultString = $answerScore ? "correct" : "incorrect"; 725 726 # get rid of the goofy prefix on the answer names (supposedly, the format 727 # of the answer names is changeable. this only fixes it for "AnSwEr" 728 $name =~ s/^AnSwEr//; 729 730 my $row = CGI::td($name); 731 $row .= $showAttemptAnswers ? CGI::td(nbsp($studentAnswer)) : ""; 732 $row .= $showAttemptPreview ? CGI::td(nbsp($preview)) : ""; 733 $row .= $showCorrectAnswers ? CGI::td(nbsp($correctAnswer)) : ""; 734 $row .= $showAttemptResults ? CGI::td(nbsp($resultString)) : ""; 735 $row .= $answerMessage ? CGI::td(nbsp($answerMessage)) : ""; 736 push @tableRows, $row; 737 } 738 739 my $numIncorrectNoun = scalar @answerNames == 1 ? "question" : "questions"; 740 my $scorePercent = sprintf("%.0f%%", $problemResult->{score} * 100); 741 my $summary = "On this attempt, you answered $numCorrect out of " 742 . scalar @answerNames . " $numIncorrectNoun correct, for a score of $scorePercent."; 743 return CGI::table({-class=>"attemptResults"}, CGI::Tr(\@tableRows)) . ($showSummary ? CGI::p($summary) : ""); 744 } 745 sub nbsp { 746 my $str = shift; 747 ($str) ? $str : ' '; # returns non-breaking space for empty strings 748 } 749 sub viewOptions($) { 750 my $self = shift; 751 my $displayMode = $self->{displayMode}; 752 my %must = %{ $self->{must} }; 753 my %can = %{ $self->{can} }; 754 my %will = %{ $self->{will} }; 755 756 my $optionLine; 757 $can{showOldAnswers} and $optionLine .= join "", 758 "Show: ".CGI::br(), 759 CGI::checkbox( 760 -name => "showOldAnswers", 761 -checked => $will{showOldAnswers}, 762 -label => "Saved answers", 763 ), " ".CGI::br(); 764 $can{showCorrectAnswers} and $optionLine .= join "", 765 CGI::checkbox( 766 -name => "showCorrectAnswers", 767 -checked => $will{showCorrectAnswers}, 768 -label => "Correct answers", 769 ), " ".CGI::br(); 770 $can{showHints} and $optionLine .= join "", 771 CGI::checkbox( 772 -name => "showHints", 773 -checked => $will{showHints}, 774 -label => "Hints", 775 ), " ".CGI::br(); 776 $can{showSolutions} and $optionLine .= join "", 777 CGI::checkbox( 778 -name => "showSolutions", 779 -checked => $will{showSolutions}, 780 -label => "Solutions", 781 ), " ".CGI::br(); 782 $optionLine and $optionLine .= join "", CGI::br(); 783 784 return CGI::div({-style=>"border: thin groove; padding: 1ex; margin: 2ex align: left"}, 785 "View equations as: ".CGI::br(), 786 CGI::radio_group( 787 -name => "displayMode", 788 -values => ['plainText', 'formattedText', 'images'], 789 -default => $displayMode, 790 -linebreak=>'true', 791 -labels => { 792 plainText => "plain", 793 formattedText => "formatted", 794 images => "images", 795 } 796 ), CGI::br(),CGI::hr(), 797 $optionLine, 798 CGI::submit(-name=>"redisplay", -label=>"Save Options"), 799 ); 800 } 801 802 sub previewAnswer($$) { 803 my ($self, $answerResult) = @_; 804 my $ce = $self->{ce}; 805 my $effectiveUser = $self->{effectiveUser}; 806 my $set = $self->{set}; 807 my $problem = $self->{problem}; 808 my $displayMode = $self->{displayMode}; 809 810 # note: right now, we have to do things completely differently when we are 811 # rendering math from INSIDE the translator and from OUTSIDE the translator. 812 # so we'll just deal with each case explicitly here. there's some code 813 # duplication that can be dealt with later by abstracting out tth/dvipng/etc. 814 815 my $tex = $answerResult->{preview_latex_string}; 816 817 return "" if $tex eq ""; 818 819 if ($displayMode eq "plainText") { 820 return $tex; 821 } elsif ($displayMode eq "formattedText") { 822 my $tthCommand = $ce->{externalPrograms}->{tth} 823 . " -L -f5 -r 2> /dev/null <<END_OF_INPUT; echo > /dev/null\n" 824 . "\\(".$tex."\\)\n" 825 . "END_OF_INPUT\n"; 826 827 # call tth 828 my $result = `$tthCommand`; 829 if ($?) { 830 return "<b>[tth failed: $? $@]</b>"; 831 } 832 return $result; 833 } elsif ($displayMode eq "images") { 834 # how are we going to name this? 835 my $targetPathCommon = "/m2i/" 836 . $effectiveUser->user_id . "." 837 . $set->set_id . "." 838 . $problem->problem_id . "." 839 . $answerResult->{ans_name} . ".png"; 840 841 # figure out where to put things 842 my $wd = makeTempDirectory($ce->{courseDirs}->{html_temp}, "webwork-dvipng"); 843 my $latex = $ce->{externalPrograms}->{latex}; 844 my $dvipng = $ce->{externalPrograms}->{dvipng}; 845 my $targetPath = $ce->{courseDirs}->{html_temp} . $targetPathCommon; 846 # should use surePathToTmpFile, but we have to 847 # isolate it from the problem enivronment first 848 my $targetURL = $ce->{courseURLs}->{html_temp} . $targetPathCommon; 849 850 # call dvipng to generate a preview 851 dvipng($wd, $latex, $dvipng, $tex, $targetPath); 852 rmtree($wd, 0, 0); 853 if (-e $targetPath) { 854 return "<img src=\"$targetURL\" alt=\"$tex\" />"; 855 } else { 856 return "<b>[math2img failed]</b>"; 857 } 858 } 859 } 860 861 ##### logging subroutine #### 862 863 864 865 ##### permission queries ##### 866 867 # this stuff should be abstracted out into the permissions system 868 # however, the permission system only knows about things in the 869 # course environment and the username. hmmm... 870 871 # also, i should fix these so that they have a consistent calling 872 # format -- perhaps: 873 # canPERM($courseEnv, $user, $set, $problem, $permissionLevel) 874 875 sub canShowCorrectAnswers($$) { 876 my ($permissionLevel, $answerDate) = @_; 877 return $permissionLevel > 0 || time > $answerDate; 878 } 879 880 sub canShowSolutions($$) { 881 my ($permissionLevel, $answerDate) = @_; 882 return canShowCorrectAnswers($permissionLevel, $answerDate); 883 } 884 885 sub canRecordAnswers($$$$$) { 886 my ($permissionLevel, $openDate, $dueDate, $maxAttempts, $attempts) = @_; 887 my $permHigh = $permissionLevel > 0; 888 my $timeOK = time >= $openDate && time <= $dueDate; 889 my $attemptsOK = $maxAttempts == -1 || $attempts <= $maxAttempts; 890 my $recordAnswers = $permHigh || ($timeOK && $attemptsOK); 891 return $recordAnswers; 892 } 893 894 sub canCheckAnswers($$) { 895 my ($permissionLevel, $answerDate) = @_; 896 my $permHigh = $permissionLevel > 0; 897 my $timeOK = time >= $answerDate; 898 my $recordAnswers = $permHigh || $timeOK; 899 return $recordAnswers; 900 } 901 902 sub mustRecordAnswers($) { 903 my ($permissionLevel) = @_; 904 return $permissionLevel == 0; 905 } 906 907 1;
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