--- loncom/homework/imageresponse.pm	2008/11/18 19:14:28	1.96
+++ loncom/homework/imageresponse.pm	2013/04/30 03:03:34	1.105
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # image click response style
 #
-# $Id: imageresponse.pm,v 1.96 2008/11/18 19:14:28 jms Exp $
+# $Id: imageresponse.pm,v 1.105 2013/04/30 03:03:34 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -179,7 +179,8 @@ sub end_imageresponse {
     
     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
 	$target eq 'tex' || $target eq 'analyze') {
-	&Apache::lonxml::increment_counter(&Apache::response::repetition(), 
+        my $repetition = &Apache::response::repetition();
+	&Apache::lonxml::increment_counter($repetition, 
 					   "$part_id.$response_id");
 	if ($target eq 'analyze') {
 	    &Apache::lonhomework::set_bubble_lines();
@@ -187,15 +188,15 @@ sub end_imageresponse {
 	
     }
     &Apache::response::end_response();
-
     return $result;
 }
 
 %Apache::response::foilgroup=();
 sub start_foilgroup {
+    my ($target) = @_;
     %Apache::response::foilgroup=();
     $Apache::imageresponse::conceptgroup=0;
-    &Apache::response::pushrandomnumber();
+    &Apache::response::pushrandomnumber(undef,$target);
     return '';
 }
 
@@ -211,8 +212,11 @@ sub getfoilcounts {
 
 sub whichfoils {
     my ($max)=@_;
-    return if (!defined(@{ $Apache::response::foilgroup{'names'} }));
-    my @names = @{ $Apache::response::foilgroup{'names'} };
+    my @names;
+    if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
+        @names = @{ $Apache::response::foilgroup{'names'} };
+    }
+    return if (!@names);
     my @whichopt;
     while ((($#whichopt+1) < $max) && ($#names > -1)) {
 	&Apache::lonxml::debug("Have $#whichopt max is $max");
@@ -320,7 +324,7 @@ sub displayfoils {
 	my $image=$Apache::response::foilgroup{"$name.image"};
 	&Apache::lonxml::debug("image is $image");
 	if ( ($target eq 'web' || $target eq 'answer') 
-	     && $image !~ /^http:/ ) {
+	     && $image !~ /^https?\:/ ) {
 	    $image=&clean_up_image($image);
 	}
 	push(@images,$image);
@@ -353,12 +357,59 @@ sub displayfoils {
 	$temp++;
     }
     if ($target eq 'web') {
-	&Apache::response::setup_prior_tries_hash(\&format_prior_response,
-						  [\@images,\@whichopt]);
+        &get_prior_options(\@images,\@whichopt);
     }
     return $result;
 }
 
+sub get_prior_options {
+    my ($currimages,$curropt) = @_;
+    return unless((ref($curropt) eq 'ARRAY') && 
+                  (ref($currimages) eq 'ARRAY'));
+    my $part = $Apache::inputtags::part;
+    my $respid   = $Apache::inputtags::response[-1];
+    foreach my $i (1..$Apache::lonhomework::history{'version'}) {
+        my $partprefix = "$i:resource.$part";
+        my $sub_key = "$partprefix.$respid.submission";
+        next if (!exists($Apache::lonhomework::history{$sub_key}));
+        my $type_key = "$partprefix.type";
+        my @whichopt = ();
+        my @images = ();
+        if ($Apache::lonhomework::history{$type_key} eq 'randomizetry') {
+            my $order_key = "$partprefix.$respid.foilorder";
+            @whichopt = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
+            if (@whichopt > 0) {
+                foreach my $name (@whichopt) {
+                    my $image=$Apache::response::foilgroup{"$name.image"};
+                    if ($image !~ /^https?\:/ ) {
+                        $image=&clean_up_image($image);
+                    }
+                    push(@images,$image);
+                }
+            }
+        } else {
+            @whichopt = @{$curropt};
+            @images = @{$currimages};
+        }
+        my $submission;
+        if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
+            (($env{'form.grade_username'} eq $env{'user.name'}) &&
+             ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
+            $submission = $Apache::lonhomework::history{$sub_key};
+        } else {
+            unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
+                    ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
+                $submission = $Apache::lonhomework::history{$sub_key};
+            }
+        }
+        my $output =  &format_prior_response('grade',$submission,
+                                             [\@images,\@whichopt]);
+        if (defined($output)) {
+            $Apache::inputtags::submission_display{$sub_key} = $output;
+        }
+    }
+}
+
 sub format_prior_response {
     my ($mode,$answer,$other_data) = @_;
     
@@ -386,7 +437,7 @@ sub display_answers {
 	my $image=$Apache::response::foilgroup{"$name.image"};
 	&Apache::lonxml::debug("image is $image");
 	if ( ($target eq 'web' || $target eq 'answer')
-	     && $image !~ /^http:/ ) {
+	     && $image !~ /^https?\:/ ) {
 	    $image = &clean_up_image($image);
 	} 
 	my $token=&prep_image($image,'answeronly',$name);
@@ -401,7 +452,7 @@ sub clean_up_image {
     my ($image)=@_;
     if ($image =~ /\s*<img\s*/) {
 	($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
-	if ($image !~ /^http:/) {
+	if ($image !~ /^https?\:/) {
 	    $image=&Apache::lonnet::hreflocation('',$image);
 	}
 	if (!$image) {
@@ -435,9 +486,11 @@ sub gradefoils {
 	my ($x,$y) = split(':',$env{"form.HWVAL_$id:$temp"});
 	$response{$name} = $env{"form.HWVAL_$id:$temp"};
 	&Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
-	if (defined($x) && defined($y) &&
-	    defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
-	    my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
+        my @areas; 
+        if (ref($Apache::response::foilgroup{"$name.area"}) eq 'ARRAY') {
+            @areas = @{ $Apache::response::foilgroup{"$name.area"} };
+        }
+	if (defined($x) && defined($y) && @areas) {
 	    my $grade="INCORRECT";
 	    foreach my $area (@areas) {
 		&Apache::lonxml::debug("Area is $area for $name");
@@ -460,6 +513,9 @@ sub gradefoils {
 	}
 	$temp++;
     }
+    if ($Apache::lonhomework::type eq 'randomizetry') {
+        $Apache::lonhomework::results{"resource.$partid.$id.foilorder"} = &Apache::lonnet::array2str(@whichopt);
+    }
     my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
     &Apache::lonxml::debug("Question is $result");
 
@@ -467,8 +523,18 @@ sub gradefoils {
     my %previous=
 	&Apache::response::check_for_previous(&stringify_submission(\%response),
 					      $part,$id);
-    if ($result 
-	&& $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
+    if ($result) { 
+	if ($Apache::lonhomework::type eq 'survey') { 
+            $result='SUBMITTED';
+        } elsif ($Apache::lonhomework::type eq 'surveycred') { 
+            $result='SUBMITTED_CREDIT'; 
+        } elsif ($Apache::lonhomework::type eq 'anonsurvey') { 
+            $result='ANONYMOUS'; 
+        } elsif ($Apache::lonhomework::type eq 'anonsurveycred') { 
+            $result='ANONYMOUS_CREDIT'; 
+        }
+    }
+
     &Apache::response::handle_previous(\%previous,$result);
     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
 	&stringify_submission(\%response);
@@ -479,8 +545,6 @@ sub gradefoils {
 sub stringify_submission {
     my ($response) = @_;
     return &Apache::lonnet::hash2str(%{ $response });
-
-    
 }
 
 sub get_submission {
@@ -489,8 +553,29 @@ sub get_submission {
     if (!defined($string)) {
 	my $part=$Apache::inputtags::part;
 	my $respid=$Apache::inputtags::response['-1'];
-   	$string = 
-	    $Apache::lonhomework::history{"resource.$part.$respid.submission"};
+        my $newvariation;
+        if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
+            ($Apache::lonhomework::type eq 'randomizetry')) &&
+            ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
+            if ($env{'form.'.$part.'.rndseed'} ne
+                $Apache::lonhomework::history{"resource.$part.rndseed"}) {
+                $newvariation = 1;
+            }
+        }
+        unless ($newvariation) {
+            if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
+                (($env{'form.grade_username'} eq $env{'user.name'}) &&
+                 ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
+                $string =
+                    $Apache::lonhomework::history{"resource.$part.$respid.submission"};
+            } else {
+                unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
+                        ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
+                    $string =
+                        $Apache::lonhomework::history{"resource.$part.$respid.submission"};
+                }
+            }
+        }
     }
 
     if ($string !~ /=/) {
@@ -504,7 +589,7 @@ sub get_submission {
 sub end_foilgroup {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
-    my @whichopt;
+    my (@images,@whichopt);
 
     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
 	$target eq 'analyze' || $target eq 'answer') {
@@ -517,6 +602,11 @@ sub end_foilgroup {
 
 	if ($target eq 'web' || $target eq 'tex') {
 	    $result=&displayfoils($target,@whichopt);
+            if ($Apache::lonhomework::type eq 'randomizetry') {
+                if ($target eq 'web') {
+                    &get_prior_options(\@images,\@whichopt);
+                }
+            }
 	    $Apache::lonxml::post_evaluate=0;
 	} elsif ($target eq 'grade') {
 	    if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
@@ -716,11 +806,13 @@ sub end_image {
 	    my ($commentline, $restofstuff) = split(/\n/, $src);
 	    $graphinclude = $src;
 	    $graphinclude =~ s/^$commentline//;
-	} else {
+	} elsif (!($src =~ /\\/)) {
 	    my ($path,$file) = &Apache::londefdef::get_eps_image($src);
 	    my ($height_param,$width_param)=
 		&Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
 	    $graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
+	} else {
+	    $graphinclude = $src;   # Already fully formed.
 	}
 	$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
     }