--- loncom/homework/imageresponse.pm	2006/05/18 22:02:03	1.77
+++ loncom/homework/imageresponse.pm	2007/09/25 23:47:59	1.87
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # image click response style
 #
-# $Id: imageresponse.pm,v 1.77 2006/05/18 22:02:03 albertel Exp $
+# $Id: imageresponse.pm,v 1.87 2007/09/25 23:47:59 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -37,6 +37,9 @@ use Apache::londefdef();
 use Apache::Constants qw(:common :http);
 use Apache::lonlocal;
 use Apache::lonnet;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+ 
 
 BEGIN {
     &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
@@ -57,6 +60,8 @@ sub start_imageresponse {
     } elsif ($target eq 'analyze') {
 	my $part_id="$Apache::inputtags::part.$id";
 	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
+	push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
+	      1);
     }
     return $result;
 }
@@ -127,17 +132,26 @@ sub whichfoils {
 
 sub prep_image {
     my ($image,$mode,$name)=@_;
-    my $part=$Apache::inputtags::part;
-    my $respid=$Apache::inputtags::response['-1'];
+
+    my ($x,$y)= &get_submission($name);
+    &Apache::lonxml::debug("for $name drawing click at $x and $y");
+    &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
+}
+
+sub draw_image {
+    my ($mode,$image,$x,$y,$areas) = @_;
+
     my $id=&Apache::loncommon::get_cgi_id();
+
     my (%x,$i);
-    $x{"cgi.$id.BGIMG"}=&Apache::lonnet::escape($image);
-    my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"});
+    $x{"cgi.$id.BGIMG"}=&escape($image);
+
     #draws 2 xs on the image at the clicked location
     #one in white and then one in red on top of the one in white
+
     if (defined($x)    && $x =~/\S/ 
 	&& defined($y) && $y =~/\S/ 
-	&& !&Apache::response::show_answer()
+	&& ($mode eq 'submission' || !&Apache::response::show_answer())
 	&& $mode ne 'answeronly') {
 	my $length = 6;
 	my $width = 1;
@@ -167,8 +181,7 @@ sub prep_image {
     if ($mode eq 'answer' || $mode eq 'answeronly') {
 	my $width = 1;
 	my $extrawidth = 2;
-	my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
-	foreach my $area (@areas) {
+	foreach my $area (@{ $areas }) {
 	    if ($area=~/^rectangle:/) {
 		$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
 		$i=$x{"cgi.$id.OBJCOUNT"}++;
@@ -198,9 +211,9 @@ sub prep_image {
 sub displayfoils {
     my ($target,@whichopt) = @_;
     my $result ='';
-    my $name;
     my $temp=1;
-    foreach $name (@whichopt) {
+    my @images;
+    foreach my $name (@whichopt) {
 	$result.=$Apache::response::foilgroup{"$name.text"};
 	&Apache::lonxml::debug("Text is $result");
 	if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
@@ -208,7 +221,8 @@ sub displayfoils {
 	&Apache::lonxml::debug("image is $image");
 	if ( $target eq 'web' && $image !~ /^http:/ ) {
 	    $image=&clean_up_image($image);
-	} 
+	}
+	push(@images,$image);
 	&Apache::lonxml::debug("image is $image");
 	if ( &Apache::response::show_answer() ) {
 	    if ($target eq 'tex') {
@@ -221,15 +235,45 @@ sub displayfoils {
 	    if ($target eq 'tex') {
 		$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
 	    } else {
-		my $id=$Apache::inputtags::response['-1'];
-		my $token=&prep_image($image);
-		my $temp=1;
-		$result.="<input type=\"image\" name=\"HWVAL_$id:$temp\" ".
-		    "src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
+		my $respid=$Apache::inputtags::response['-1'];
+		my $token=&prep_image($image,'submission',$name);
+		my $input_id = "HWVAL_$respid:$temp";
+		my $id = $env{'form.request.prefix'}.$input_id;
+		$result.='<img onclick="image_response_click(\''.$id.'\',event);"
+	                       src="/adm/randomlabel.png?token='.$token.'" 
+                               id="'.$id.'_imageresponse"
+                                />'.
+			       '<br />'.
+			       '<input type="hidden" name="'.$input_id.'_token" value="'.$token.'" />'.
+			       '<input type="hidden" name="'.$input_id.'" value="'.
+			       join(':',&get_submission($name)).'" />';
 	    }
 	}
 	$temp++;
     }
+    if ($target eq 'web') {
+	&Apache::response::setup_prior_tries_hash(\&format_prior_response,
+						  [\@images,\@whichopt]);
+    }
+    return $result;
+}
+
+sub format_prior_response {
+    my ($mode,$answer,$other_data) = @_;
+    
+    my $result;
+
+    # make a copy of the data in the refs
+    my @images = @{ $other_data->[0] };
+    my @foils = @{ $other_data->[1] };
+    foreach my $name (@foils) {
+	my $image = pop(@images);
+	my ($x,$y) = &get_submission($name,$answer);
+	my $token = &draw_image('submission',$image,$x,$y);
+	$result .=
+	    '<img class="LC_prior_image"
+                  src="/adm/randomlabel.png?token='.$token.'" /><br />';
+    }
     return $result;
 }
 
@@ -283,13 +327,12 @@ sub gradefoils {
 	return;
     }
     
-    my $x;
-    my $y;
-    my $result;
+    my @results;
     my $temp=1;
+    my %response;
     foreach my $name (@whichopt) {
-	$x=$env{"form.HWVAL_$id:$temp.x"};
-	$y=$env{"form.HWVAL_$id:$temp.y"};
+	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"} })) {
@@ -310,23 +353,53 @@ sub gradefoils {
 		if ($grade eq 'APPROX_ANS') { last; }
 	    }
 	    &Apache::lonxml::debug("Foil was $grade");
-	    if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
-	    if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
-	    &Apache::lonxml::debug("Question is $result");
-	    $temp++;
+	    push(@results, $grade)
+	} else {
+	    push(@results, 'MISSING_ANSWER')
 	}
+	$temp++;
     }
-    my $responsestr="$x:$y";
+    my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
+    &Apache::lonxml::debug("Question is $result");
+
     my $part=$Apache::inputtags::part;
-    my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
+    my %previous=
+	&Apache::response::check_for_previous(&stringify_submission(\%response),
+					      $part,$id);
     if ($result 
 	&& $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
     &Apache::response::handle_previous(\%previous,$result);
-    $Apache::lonhomework::results{"resource.$part.$id.submission"}=$responsestr;
+    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
+	&stringify_submission(\%response);
     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
     return;
 }
 
+sub stringify_submission {
+    my ($response) = @_;
+    return &Apache::lonnet::hash2str(%{ $response });
+
+    
+}
+
+sub get_submission {
+    my ($name,$string) = @_;
+
+    if (!defined($string)) {
+	my $part=$Apache::inputtags::part;
+	my $respid=$Apache::inputtags::response['-1'];
+   	$string = 
+	    $Apache::lonhomework::history{"resource.$part.$respid.submission"};
+    }
+
+    if ($string !~ /=/) {
+	return split(':',$string);
+    } else {
+	my %response = &Apache::lonnet::str2hash($string);
+	return split(':',$response{$name});
+    }
+}
+
 sub end_foilgroup {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
@@ -343,6 +416,7 @@ sub end_foilgroup {
 
 	if ($target eq 'web' || $target eq 'tex') {
 	    $result=&displayfoils($target,@whichopt);
+	    $Apache::lonxml::post_evaluate=0;
 	} elsif ($target eq 'grade') {
 	    if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
 	} elsif ( $target eq 'analyze') {
@@ -476,6 +550,7 @@ sub end_text {
 sub start_image {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
+    my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
 	|| $target eq 'answer') { 
 	&Apache::lonxml::startredirection; 
@@ -486,7 +561,7 @@ sub start_image {
 
 	$result=&Apache::edit::tag_start($target,$token,'Clickable Image').
 	    &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
-	$result.=&Apache::edit::browse(undef,'textnode').' ';
+	$result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
 	$result.=&Apache::edit::search(undef,'textnode').
 	    &Apache::edit::end_row();
     } elsif ($target eq "modified") {