--- loncom/homework/lonhomework.pm	2007/04/07 00:12:42	1.267
+++ loncom/homework/lonhomework.pm	2007/10/30 00:24:40	1.279
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.267 2007/04/07 00:12:42 albertel Exp $
+# $Id: lonhomework.pm,v 1.279 2007/10/30 00:24:40 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -63,6 +63,28 @@ BEGIN {
 }
 
 
+=pod
+
+=item set_bubble_lines()
+
+Called at analysis time to set the bubble lines
+hash for the problem.. This should be called in the
+end_problemtype tag in analysis mode.
+
+We fetch the hash of part id counters from lonxml
+    and push them into analyze:{part_id.bubble_lines}.
+
+=cut
+
+sub set_bubble_lines {
+    my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
+
+    foreach my $key (keys(%bubble_counters)) {
+	$Apache::lonhomework::analyze{"$key.bubble_lines"} =
+	    $bubble_counters{"$key"};
+    }
+}
+
 #
 # Decides what targets to render for.
 # Implicit inputs:
@@ -188,7 +210,6 @@ sub proctor_checked_in {
     return 0;
 }
 
-$Apache::lonxml::browse='';
 sub check_ip_acc {
     my ($acc)=@_;
     &Apache::lonxml::debug("acc is $acc");
@@ -196,7 +217,8 @@ sub check_ip_acc {
 	return 1;
     }
     my $allowed=0;
-    my $ip=$ENV{'REMOTE_ADDR'};
+    my $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'};
+
     my $name;
     foreach my $pattern (split(',',$acc)) {
 	$pattern =~ s/^\s*//;
@@ -376,8 +398,8 @@ sub check_access {
     if ($env{'request.state'} eq "construct") {
 	if ($env{'form.problemstate'}) {
 	    if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
-		if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
-			lc($Apache::lonhomework::problemstatus) eq 'no')) {
+		if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' 
+			&& &hide_problem_status())) {
 		    return ('CANNOT_ANSWER',
 			    &mt('is in this state due to author settings.'));
 		}
@@ -436,7 +458,7 @@ sub check_access {
 		$date = &mt("an indeterminate date"); $passed = 0;
 	    } else {
 		if (time < $date) { $passed = 0; } else { $passed = 1; }
-		$date = localtime $date;
+		$date = &Apache::lonlocal::locallocaltime($date);
 	    }
 	    if (!$passed) { $type=$temp; last; }
 	}
@@ -467,7 +489,7 @@ sub check_access {
 	# if (correct and show prob status) or excused then CANNOT_ANSWER
 	if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
 	    &&
-	    lc($Apache::lonhomework::problemstatus) ne 'no')
+	    &show_problem_status())
 	   ||
 	   $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
 	    $status = 'CANNOT_ANSWER';
@@ -724,11 +746,14 @@ sub analyze_header {
             <form name="lonhomework" method="POST" action="'.
 	    &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
 	    &Apache::structuretags::remember_problem_state().'
+            <div class="LC_edit_problem_analyze_header">
             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
-            <hr />
+            <hr class="LC_edit_problem_divide" />
+
             <input type="submit" name="submit" value="'.&mt("View").'" />
-            <hr />
+            <hr class="LC_edit_problem_divide" />
+            </div>
             </form>';
     &Apache::lonxml::add_messages(\$result);
     $request->print($result);
@@ -788,12 +813,20 @@ sub analyze {
 			$i++;
 		    }
 		}
+		if (!keys(%{ $analyze{$part.'.answer'} })) {
+		    my $answer_part = 
+			['<span class="LC_error">'.&mt('Error').'</span>'];
+		    $seedexample{join("\0",$part,0,@{$answer_part})}=
+			$thisseed;
+		    push( @{ $overall{$part.'.answer'}[0] },
+			  $answer_part);
+		}
 	    }
 	}
     }
     &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
 					  &mt('Analyzing Results'));
-    $request->print('<hr />'.&mt('List of possible answers').': ');
+    $request->print('<hr class="LC_edit_problem_divide" />'.&mt('List of possible answers').': ');
     foreach my $part (sort(keys(%allparts))) {
 	if (defined(@{ $overall{$part.'.answer'} })) {
 	    for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
@@ -831,6 +864,36 @@ sub analyze {
     return $result;
 }
 
+{
+    my $show_problem_status;
+    sub reset_show_problem_status {
+	undef($show_problem_status);
+    }
+
+    sub set_show_problem_status {
+	my ($new_status) = @_;
+	$show_problem_status = lc($new_status);
+    }
+
+    sub hide_problem_status {
+	return ($show_problem_status eq 'no'
+		|| $show_problem_status eq 'no_feedback_ever');
+    }
+
+    sub show_problem_status {
+	return ($show_problem_status eq 'yes'
+		|| $show_problem_status eq '');
+    }
+    
+    sub show_some_problem_status {
+	return ($show_problem_status eq 'no');
+    }
+
+    sub show_no_problem_status {
+	return ($show_problem_status eq 'no_feedback_ever');
+    }
+}
+
 sub editxmlmode {
     my ($request,$file) = @_;
     my $result;
@@ -861,10 +924,18 @@ sub editxmlmode {
 	if ($cols > 80) { $cols = 80; }
 	if ($cols < 70) { $cols = 70; }
 	if ($rows < 20) { $rows = 20; }
+	my $js =
+	    &Apache::edit::js_change_detection(). 
+	    &Apache::loncommon::resize_textarea_js();
+	my $only_body =  ($env{'environment.remote'} eq 'off')? 0 : 1;
 	my $start_page = 
-	    &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),
-					   &Apache::edit::js_change_detection(),
-					   {'no_auto_mt_title' => 1,});
+	    &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
+					   {'no_auto_mt_title' => 1,
+					    'only_body'        => $only_body,
+					    'add_entries'      => {
+						'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
+						'onload'   => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
+				    }});
 
 	$result.=$start_page.
 	    &renderpage($request,$file,['no_output_web'],1).
@@ -872,19 +943,23 @@ sub editxmlmode {
             <form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
 	    &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
 	    &Apache::structuretags::remember_problem_state().'
+            <div class="LC_edit_problem_editxml_header">
             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
             <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
             <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
             <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
-            <hr />
+            <hr class="LC_edit_problem_divide" />
             <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
             <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
-            <hr />
+            <hr class="LC_edit_problem_divide" />
+            </div>
             ' . $xml_help . '
-            <textarea '.&Apache::edit::element_change_detection().' style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
-	    &HTML::Entities::encode($problem,'<>&"').'</textarea><br />
-            <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
-            <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
+            <textarea '.&Apache::edit::element_change_detection().
+	              ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
+		      ' name="editxmltext" id="LC_editxmltext">'.
+		      &HTML::Entities::encode($problem,'<>&"').'</textarea>
+            <div id="LC_aftertextarea">
+            </div>
             </form>'.&Apache::loncommon::end_page();
 	&Apache::lonxml::add_messages(\$result);
 	$request->print($result);
@@ -901,6 +976,7 @@ sub renderpage {
     my @targets = @{$targets || [&get_target()]};
     &Apache::lonhomework::showhashsubset(\%env,'form.');
     &Apache::lonxml::debug("Running targets ".join(':',@targets));
+
     my $overall_result;
     foreach my $target (@targets) {
 	# FIXME need to do something intelligent when a problem goes
@@ -938,7 +1014,7 @@ sub renderpage {
 	&Apache::lonxml::debug("Should be parsing now");
 	$result .= &Apache::lonxml::xmlparse($request, $target, $problem,
 					     &setup_vars($target),%mystyle);
-	undef($Apache::lonhomework::parsing_a_problem);
+	&finished_parsing();
 	if (!$output) { $result = ''; }
 	#$request->print("Result follows:");
 	if ($target eq 'modified') {
@@ -969,6 +1045,11 @@ sub renderpage {
     }
 }
 
+sub finished_parsing {
+    undef($Apache::lonhomework::parsing_a_problem);
+    undef($Apache::lonhomework::parsing_a_task);
+}
+
 # with no arg it returns a HTML <option> list of the template titles
 # with one arg it returns the filename associated with the arg passed
 sub get_template_list {
@@ -977,7 +1058,9 @@ sub get_template_list {
     my @allnames;
     &Apache::lonxml::debug("Looking for :$extension:");
     foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
+	&Apache::lonxml::debug("Looking at $file");
 	my $name=&Apache::lonnet::metadata($file,'title');
+	&Apache::lonxml::debug("Got a name $name");
 	if ($namewanted && ($name eq $namewanted)) {
 	    $result=$file;
 	    last;
@@ -1047,6 +1130,24 @@ $errormsg
     return '';
 }
 
+sub update_construct_style {
+    if ($env{'request.state'} eq "construct"
+	&& $env{'form.problemmode'} eq &mt('View') 
+	&&  defined($env{'form.submitted'})
+	&& !defined($env{'form.resetdata'})
+	&& !defined($env{'form.newrandomization'})) {
+	if ((!$env{'form.style_file'} && $env{'construct.style'})
+	    ||$env{'form.clear_style_file'}) {
+	    &Apache::lonnet::delenv('construct\\.style');
+	} elsif ($env{'form.style_file'} 
+	    && $env{'construct.style'} ne $env{'form.style_file'}) {
+	    &Apache::lonnet::appenv('construct.style' => 
+				        $env{'form.style_file'});
+	}
+    }
+}
+
+
 sub handler {
     #my $t0 = [&gettimeofday()];
     my $request=$_[0];
@@ -1097,6 +1198,7 @@ sub handler {
 	    } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
 		&analyze($request,$file);
 	    } else {
+		&update_construct_style();
 		&renderpage($request,$file);
 	    }
 	} else {