--- loncom/homework/structuretags.pm	2003/10/08 16:37:30	1.214
+++ loncom/homework/structuretags.pm	2004/02/16 20:30:34	1.242
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.214 2003/10/08 16:37:30 albertel Exp $
+# $Id: structuretags.pm,v 1.242 2004/02/16 20:30:34 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -37,6 +37,7 @@ use Apache::lonnet;
 use Apache::File();
 use Apache::lonmenu;
 use Apache::lonlocal;
+use Apache::lonxml;
 
 BEGIN {
     &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext',
@@ -157,8 +158,8 @@ sub setup_rndseed {
 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
 	    if (!$rndseed) {
 		$rndseed=time;
-		$ENV{'form.rndseed'}=$rndseed;
 	    }
+	    $ENV{'form.rndseed'}=$rndseed;
 	}
 	if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
 	    $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
@@ -171,8 +172,10 @@ sub setup_rndseed {
 	if (defined($rndseed) && $rndseed ne int($rndseed)) {
 	   $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
         }
-	&Apache::lonxml::debug("Setting rndseed to $rndseed");
-	&Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
+	if ($safeeval) {
+	    &Apache::lonxml::debug("Setting rndseed to $rndseed");
+	    &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
+	}
     }
     return $rndseed;
 }
@@ -184,8 +187,12 @@ sub problem_edit_header {
        <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
        <input type="submit" name="Undo" value="'.&mt('undo').'" /> <hr />
        <input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
-       <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" /><br /><p>&nbsp;</p><table border="0"><tr><td bgcolor="#DDDDDD">
-      ';
+       <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
+       &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index',
+					   'Problem Editing Help').'</td><td>'.
+       &Apache::loncommon::help_open_faq(5).
+       &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>'.
+       '<table border="0"><tr><td bgcolor="#DDDDDD">';
 }
 
 sub problem_edit_footer {
@@ -193,6 +200,16 @@ sub problem_edit_footer {
     <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
 }
 
+sub option {
+    my ($value,$name) = @_;
+    my $result ="<option value='".$value."' ";
+    if ($ENV{'form.'.$name} eq $value) {
+	$result.=" selected='on' ";
+    }
+    $result.='>';
+    return $result;
+}
+
 sub problem_web_to_edit_header {
     my ($rndseed)=@_;
     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
@@ -206,8 +223,40 @@ sub problem_web_to_edit_header {
            onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
              <input type="checkbox" name="showallfoils" ';
     if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
-    $result.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').'
-             <hr />';
+    $result.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
+	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
+	'<hr />';
+    $result.="
+<nobr>
+Problem Status:
+<select name='problemstate'>
+  <option name=''></option>
+  ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
+  ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
+  ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
+  ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
+  ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
+</select>
+</nobr>
+<nobr>
+Problem Type:
+<select name='problemtype'>
+  <option name=''></option>
+  ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
+  ".&option('problem','problemtype').&mt("Homework problem")."</option>
+  ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
+</select>
+</nobr>
+<nobr>
+Feedback Mode:
+<select name='problemstatus'>
+  <option value=''></option>
+  ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
+  ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
+</select>
+</nobr>
+<input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
+<hr />";
     my $numtoanalyze=$ENV{'form.numtoanalyze'};
     if (!$numtoanalyze) { $numtoanalyze=20; }
     $result.= '<input type="submit" name="problemmode" value='.
@@ -287,8 +336,8 @@ sub init_problem_globals {
     if ($type eq 'problem') {
 	$Apache::inputtags::part='0';
 	@Apache::inputtags::partlist=('0');
-	$Apache::lonhomework::problemstatus=
-	    &Apache::lonnet::EXT('resource.0.problemstatus');
+
+	$Apache::lonhomework::problemstatus=&get_problem_status('0')
     } else {
 	$Apache::inputtags::part='';
 	@Apache::inputtags::partlist=();
@@ -318,6 +367,26 @@ sub reset_problem_globals {
     undef($Apache::lonhomework::name);
 }
 
+sub set_problem_state {
+    my ($part)=@_;
+    if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
+	$Apache::lonhomework::history{"resource.$part.solved"}=
+	    'correct_by_student';
+    }
+}
+
+sub get_problem_status {
+    my ($part)=@_;
+    my $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
+    &Apache::lonxml::debug("problem status for $part is $problem_status");
+    &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
+    if ($ENV{'request.state'} eq 'construct' &&
+	defined($ENV{'form.problemstatus'})) {
+	$problem_status=$ENV{'form.problemstatus'};
+    }
+    return $problem_status;
+}
+
 sub start_problem {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
 
@@ -340,8 +409,13 @@ sub start_problem {
 	if ($target eq 'web') {
 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
 	}
+       	if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
-	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
+	if (($ENV{'request.state'} eq 'construct') &&
+	    defined($ENV{'form.problemtype'})) {
+	    $Apache::lonhomework::type=$ENV{'form.problemtype'};
+	}
+	&Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
     }
     if ($Apache::lonhomework::type eq '' ) {
 	my $uri=$ENV{'request.uri'};
@@ -400,7 +474,8 @@ sub start_problem {
 	if (( $status eq 'CLOSED' ) ||
 	    ( $status eq 'UNCHECKEDOUT') ||
 	    ( $status eq 'BANNED') ||
-	    ( $status eq 'UNAVAILABLE')) {
+	    ( $status eq 'UNAVAILABLE') ||
+	    ( $status eq 'INVALID_ACCESS')) {
 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
 	    if ( $target eq "web" ) {
 		$result.= $head_tag_start.'</head>';
@@ -410,7 +485,7 @@ sub start_problem {
 		} else {
 		    $result.='<h1>'.&mt('Not open to be viewed').'</h1>';
 		}
-		if ($status eq 'CLOSED') {
+		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
 		    $msg.='The problem '.$accessmsg;
 		} elsif ($status eq 'UNCHECKEDOUT') {
 		    $msg.=&checkout_msg;
@@ -426,25 +501,19 @@ sub start_problem {
 	    }
 	} elsif ($target eq 'web') {
 	    my $name= &get_resource_name($parstack,$safeeval);
-	    if ($status eq 'CAN_ANSWER') {
-		# create a page header and exit
-		$result.="$head_tag_start<title>$name</title></head>
+	    $result.="$head_tag_start<title>$name</title></head>
               $body_tag_start \n $form_tag_start".	
-		  '<input type="hidden" name="submitted" value="yes" />';
-		if ($ENV{'request.state'} eq "construct") {
-		    $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
-		}
-		# if we are viewing someone else preserve that info
-		if (defined $ENV{'form.grade_symb'}) {
-		    foreach my $field ('symb','courseid','domain','username') {
-			$result .= '<input type="hidden" name="grade_'.$field.
-			    '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
-		    }
+	      '<input type="hidden" name="submitted" value="yes" />';
+	    # create a page header and exit
+	    if ($ENV{'request.state'} eq "construct") {
+		$result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
+	    }
+	    # if we are viewing someone else preserve that info
+	    if (defined $ENV{'form.grade_symb'}) {
+		foreach my $field ('symb','courseid','domain','username') {
+		    $result .= '<input type="hidden" name="grade_'.$field.
+			'" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
 		}
-	    } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
-		     || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {
-		$result.=$head_tag_start.
-		    "<title>$name</title></head>\n$body_tag_start\n";
 	    }
 	} elsif ($target eq 'tex') {
 	    my $startminipage = '';
@@ -453,12 +522,12 @@ sub start_problem {
 	    }
 	    my $id = $Apache::inputtags::part;
 	    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
-	    my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');
-	    my @allkeys = split /,/,$allkeys;
+	    my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
+	    my @packages = split /,/,$packages;
 	    my $allow_print_points = 0;
-	    foreach my $partial_key (@allkeys) {
-		if ($partial_key=~m/weight/) {
-		    $allow_print_points++;
+	    foreach my $partial_key (@packages) {
+		if ($partial_key=~m/^part_0$/) {
+		    $allow_print_points=1;
 		}
 	    }
 	    my $duedate = &Apache::lonnet::EXT("resource.$id.duedate"); 
@@ -473,7 +542,7 @@ sub start_problem {
 	    my @due_file_content = <$temp_file>;
 	    my $due_file_content = $due_file_content[$#due_file_content];
 	    chomp $due_file_content;
-	    my $name_of_resourse= &get_resource_name($parstack,$safeeval);
+	    my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
 	    if ($due_file_content ne $duedate) {
 		$temp_file = Apache::File->new('>'.$filename);
 		print $temp_file "$duedate\n";
@@ -499,6 +568,8 @@ sub start_problem {
     } elsif ($target eq 'edit') {
 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
 	    &problem_edit_header();
+	$Apache::lonxml::warnings_error_header=
+	    &mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
 	my $temp=&Apache::edit::insertlist($target,$token);
 	$result.=$temp;
     } elsif ($target eq 'modified') {
@@ -518,7 +589,7 @@ sub end_problem {
     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
 	$target eq 'tex') {
 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
-	     $status eq 'CAN_ANSWER' ) {
+	     ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode)) {
 	    # if part is zero, no <part>s existed, so we need to the grading
 	    &Apache::inputtags::grade;
 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
@@ -533,17 +604,9 @@ sub end_problem {
 	    (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
 	    ($target eq 'answer') || ($target eq 'tex')
 	   ) {
-	    if ($status eq 'CAN_ANSWER') {
-		if ($target ne 'tex' &&
-		    $ENV{'form.answer_output_mode'} ne 'tex') {
-		    $result.="</form></body>\n";
-		}
-	    } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
-		     $status eq 'UNCHECKEDOUT' ) {
-		if ($target ne 'tex' &&
-		    $ENV{'form.answer_output_mode'} ne 'tex') {
-		    $result.="</body>\n";
-		}
+	    if ($target ne 'tex' &&
+		$ENV{'form.answer_output_mode'} ne 'tex') {
+		$result.="</form></body>\n";
 	    }
 	    if ($target eq 'web') {
 		$result.=&Apache::lonxml::xmlend();
@@ -574,6 +637,7 @@ sub end_problem {
 	    @Apache::inputtags::response=();
 	    $result=&Apache::response::mandatory_part_meta;
 	}
+	$result.=&Apache::response::meta_part_order();
     } elsif ($target eq 'edit') {
 	&Apache::lonxml::debug("in end_problem with $target, edit");
 	$result = &problem_edit_footer();
@@ -936,14 +1000,15 @@ sub start_part {
     @Apache::inputtags::response=();
     @Apache::inputtags::previous=();
     @Apache::inputtags::previous_version=();
-    $Apache::lonhomework::problemstatus=
-	&Apache::lonnet::EXT("resource.$id.problemstatus");
+    $Apache::lonhomework::problemstatus=&get_problem_status($id);
     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
     &Apache::run::run($expression,$safeeval);
 
     if ($target eq 'meta') {
-	return &Apache::response::mandatory_part_meta;
+	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
+	return &Apache::response::mandatory_part_meta.
+	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
     } elsif ($target eq 'web' || $target eq 'grade' ||
 	     $target eq 'answer' || $target eq 'tex') {
 	if ($hidden) {
@@ -954,7 +1019,14 @@ sub start_part {
 	    my $expression='$external::datestatus="'.$status.'";';
 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
 	    &Apache::run::run($expression,$safeeval);
-	    if ( $status eq 'CLOSED' ) {
+	    if ($ENV{'request.state'} eq 'construct') {
+		&set_problem_state($Apache::inputtags::part); 
+	    }
+	    if (( $status eq 'CLOSED' ) ||
+		( $status eq 'UNCHECKEDOUT') ||
+		( $status eq 'BANNED') ||
+		( $status eq 'UNAVAILABLE') ||
+		( $status eq 'INVALID_ACCESS')) {
 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
 		if ( $target eq "web" ) {
 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
@@ -971,7 +1043,17 @@ sub start_part {
 			$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
 		    }
 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
-		    if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
+		    my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
+		    my @allkeys = split /,/,$allkeys;
+		    my $allow_print_points = 0;
+		    foreach my $partial_key (@allkeys) {
+			if ($partial_key=~m/^part_(.*)$/) {
+			    if ($1 ne '0') {$allow_print_points=1;}
+			}
+		    }
+		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
+		} elsif ($target eq 'web') {
+		    $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
 		}
 	    }
 	}
@@ -979,11 +1061,15 @@ sub start_part {
 	$result.=&Apache::edit::tag_start($target,$token);
 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
+	    '&nbsp;&nbsp;'.
+&Apache::edit::text_arg('Displayed Part Description:','display',$token).
 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {
 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
-						     $safeeval,'id');
+						     $safeeval,'id','display');
 	if ($constructtag) {
+	    #limiting ids to only letters numbers, and space
+	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
 	    $result = &Apache::edit::rebuild_tag($token);
 	    $result.=&Apache::edit::handle_insert();
 	}
@@ -999,7 +1085,9 @@ sub end_part {
     my $result='';
     if ( $target eq 'meta' ) {
 	$result='';
-    } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
+    } elsif ($target eq 'grade' && 
+	     ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
+	     !$hidden) {
 	$result=&Apache::inputtags::grade;
     } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
@@ -1019,9 +1107,10 @@ sub end_part {
 sub start_preduedate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
+	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
 	if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
-	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
-	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
+	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
+	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
 	    &Apache::lonxml::get_all_text("/preduedate",$parser);
 	}
     }
@@ -1034,12 +1123,12 @@ sub end_preduedate {
 
 sub start_postanswerdate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
+    if ($target eq 'web' || $target eq 'grade') {
 	if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser);
 	}
     } elsif ($target eq 'tex') {
-	return '\vskip 0 mm \noindent';
+	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
     }
     return '';
 }
@@ -1054,7 +1143,8 @@ sub start_notsolved {
 	$target eq 'tex') {
 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
 	&Apache::lonxml::debug("not solved has :$gradestatus:");
-	if ($gradestatus =~ /^correct/) {
+	if ($gradestatus =~ /^correct/ &&
+	    &Apache::response::show_answer()) {
 	    &Apache::lonxml::debug("skipping");
 	    &Apache::lonxml::get_all_text("/notsolved",$parser);
 	}
@@ -1071,7 +1161,8 @@ sub start_solved {
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
 	$target eq 'tex') {
 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
-	if ($gradestatus !~ /^correct/) {
+	if ($gradestatus !~ /^correct/ ||
+	    !&Apache::response::show_answer()) {
 	    &Apache::lonxml::get_all_text("/solved",$parser);
 	}
     }
@@ -1108,8 +1199,7 @@ sub end_startouttext {
 		 &Apache::edit::editfield($token->[1],$text,"",80,4);
     }
     if ($target eq 'modified') {
-	$text=&Apache::lonxml::get_all_text("endouttext",$parser);
-	$result='<startouttext />'.&Apache::edit::modifiedfield();
+	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
     }
     if ($target eq 'tex') {
 	$result .= '\noindent ';
@@ -1153,7 +1243,7 @@ sub start_simpleeditbutton {
     my $result='';
     if (($target eq 'web') &&
         (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
-        my $url=$ENV{'REQUEST_URI'};
+        my $url=$ENV{'request.noversionuri'};
         $url=~s/\?.*$//;
 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
                 '<a href="'.$url.'/smpedit">'.&mt('Simple Problem Editor').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').