--- loncom/homework/chemresponse.pm 2004/06/07 21:17:42 1.33
+++ loncom/homework/chemresponse.pm 2004/08/10 18:05:12 1.37
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# chemical equation style response
#
-# $Id: chemresponse.pm,v 1.33 2004/06/07 21:17:42 albertel Exp $
+# $Id: chemresponse.pm,v 1.37 2004/08/10 18:05:12 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -35,6 +35,33 @@ BEGIN {
&Apache::lonxml::register('Apache::chemresponse',('organicresponse','organicstructure','reactionresponse'));
}
+sub chem_standard_order {
+ my ($reaction) = @_;
+ my ($re,$pr) = split(/->|<=>/,$reaction);
+ my @reactants = split(/\s\+/,$re);
+ my @products = split(/\s\+/,$pr);
+ foreach my $substance (@reactants,@products) {
+ $substance =~ s/(\^\d*)\s+/$1_/g; # protect superscript space
+ $substance =~ s/\s*//g; # strip whitespace
+ $substance =~ s/_/ /g; # restore superscript space
+ }
+ @reactants = sort @reactants;
+ @products = sort @products;
+ my $standard = '';
+ foreach my $substance (@reactants) {
+ $standard .= $substance;
+ $standard .= ' + ';
+ }
+ $standard =~ s/ \+ $//; # get rid of trailing plus sign
+ $standard .= ' -> ';
+ foreach my $substance (@products) {
+ $standard .= $substance;
+ $standard .= ' + ';
+ }
+ $standard =~ s/ \+ $//; # get rid of trailing plus sign
+ return $standard;
+}
+
sub separate_jme_window {
my ($smile_input,$jme_input,$molecule,$options)=@_;
my $smilesection;
@@ -286,10 +313,10 @@ sub edit_reaction_button {
function create_reaction_window_${id}_${field} () {
editor=window.open('','','width=500,height=270,scrollbars=no,resizable=yes');
editor.document.open('text/html','replace');
- editor.document.writeln(' LON-CAPA Reaction Editor ');
+ editor.document.writeln(' LON-CAPA Reaction Editor ');
}
-
+
EDITREACTION
return $result;
}
@@ -304,6 +331,7 @@ sub start_reactionresponse {
my $partid = $Apache::inputtags::part;
my $id = $Apache::inputtags::response['-1'];
my $reaction=$Apache::lonhomework::history{"resource.$partid.$id.submission"};
+ if ($reaction eq '') { $reaction=&Apache::lonxml::get_param('initial',$parstack,$safeeval); }
my $status=$Apache::inputtags::status['-1'];
if ($status eq 'CAN_ANSWER') {
$result.=&edit_reaction_button($id,"HWVAL_$id",$reaction);
@@ -320,11 +348,16 @@ sub start_reactionresponse {
$result .=''.
&Apache::edit::text_arg('Answer:','answer',$token,40);
$result .=&edit_reaction_button($id,&Apache::edit::html_element_name('answer'),$answer).'';
+ my $initial=&Apache::lonxml::get_param('initial',$parstack,$safeeval);
+ $result.=''.
+ &Apache::edit::text_arg('Initial Reation:','initial',$token,40);
+ $result .=&edit_reaction_button($id,&Apache::edit::html_element_name('initial'),$initial).'';
$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
- $safeeval,'answer');
+ $safeeval,'answer',
+ 'initial');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
@@ -345,7 +378,8 @@ sub end_reactionresponse {
my $ad;
foreach my $answer (@answers) {
&Apache::lonxml::debug("submitted a $response for $answer
\n");
- if ($response eq $answer) {
+ if (&chem_standard_order($response) eq
+ &chem_standard_order($answer)) {
$ad='EXACT_ANS';
} else {
$ad='INCORRECT';