--- loncom/homework/structuretags.pm	2005/11/21 21:51:29	1.324
+++ loncom/homework/structuretags.pm	2005/12/22 22:06:54	1.328
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.324 2005/11/21 21:51:29 albertel Exp $
+# $Id: structuretags.pm,v 1.328 2005/12/22 22:06:54 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -42,8 +42,8 @@ BEGIN {
 }
 
 sub start_web {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
     if ($target eq 'web') {
 	return $bodytext;
     }
@@ -55,9 +55,9 @@ sub end_web {
 }
 
 sub start_tex {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
-    my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
+    my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
     if ($target eq 'tex') {
 	return $bodytext.' ';
     }
@@ -113,6 +113,9 @@ sub page_start {
 	    &Apache::lonhtmlcommon::htmlareaheaders().
 	    &Apache::lonhtmlcommon::spellheader().
 	    &Apache::lonxml::fontsettings();     
+	if ($target eq 'edit') {
+	    $head_tag_start.=&Apache::edit::js_change_detection();
+	}
     }
     my $body_tag_start;
     if (!defined($found{'body'}) && $env{'request.state'} eq 'construct') {
@@ -150,7 +153,11 @@ sub page_start {
 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="POST" action="';
 	my $uri=$env{'request.uri'};
 	if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
-	$form_tag_start.=$uri.'">';
+	$form_tag_start.=$uri.'" ';
+	if ($target eq 'edit') {
+	    $form_tag_start.=&Apache::edit::form_change_detection();
+	}
+	$form_tag_start.='>';
     }
     return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
 }
@@ -225,7 +232,7 @@ sub problem_edit_header {
 	&Apache::structuretags::remember_problem_state().'
        <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
        <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
-       <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
+       <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
        <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
        <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
        <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
@@ -514,7 +521,7 @@ sub get_problem_status {
 }
 
 sub start_problem {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
 
     # We'll use the redirection to fix up printing of duedates.
     if (!$Apache::lonxml::metamode) {
@@ -527,7 +534,7 @@ sub start_problem {
     if ( $Apache::inputtags::part ne '' ||
 	 $Apache::lonhomework::parsing_a_problem) {
 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
-	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
+	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
 	return '';
     }
 
@@ -630,7 +637,8 @@ sub start_problem {
 	    ( $status eq 'UNAVAILABLE') ||
 	    ( $status eq 'NOT_IN_A_SLOT') ||
 	    ( $status eq 'INVALID_ACCESS')) {
-	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
+	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
+						       $style);
 	    if ( $target eq "web" ) {
 		$result.= $head_tag_start.'</head>';
 		my $msg=$body_tag_start;
@@ -645,6 +653,8 @@ sub start_problem {
 		    $msg.=&checkout_msg;
 		} elsif ($status eq 'NOT_YET_VIEWED') {
 		    $msg.=&firstaccess_msg($accessmsg,$symb);
+		} elsif ($status eq 'NOT_IN_A_SLOT') {
+		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
 		}
 		$result.=$msg.'<br />';
 	    } elsif ($target eq 'tex') {
@@ -656,7 +666,8 @@ sub start_problem {
 		}
 	    }
 	} elsif ($status eq 'NEEDS_CHECKIN') {
-	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
+	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
+						       $style);
 	    if ($target eq 'web') {
 		$result .= $head_tag_start.'</head>';
 		$result .= $body_tag_start;
@@ -931,12 +942,12 @@ sub end_library {
 }
 
 sub start_definetag {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
 
     my $result;
 
     my $name = $token->[2]->{'name'};
-    my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
+    my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
     if ($name=~/^\//) {
 	$result=
  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
@@ -1082,7 +1093,7 @@ sub end_instructorcomment {
 }
 
 sub start_while {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
 
     my $result;
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
@@ -1094,7 +1105,7 @@ sub start_while {
 	    &Apache::lonxml::default_homework_load($safeeval);
 	}
 	my $result = &Apache::run::run($code,$safeeval);
-	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
+	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
 	push( @Apache::structuretags::whilebody, $bodytext);
 	push( @Apache::structuretags::whileline, $token->[5]);
 	&Apache::lonxml::debug("s code $code got -$result-");
@@ -1150,11 +1161,11 @@ sub end_while {
 #  ...
 # </randomlist>
 sub start_randomlist {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
     if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
 	$target eq 'tex' || $target eq 'analyze') {
-	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
+	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser,$style);
 	my $b_parser= HTML::LCParser->new(\$body);
 	$b_parser->xml_mode(1);
 	$b_parser->marked_sections(1);
@@ -1243,7 +1254,7 @@ sub ordered_show_check {
 }
 
 sub start_part {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     if (!$Apache::lonxml::metamode) {
 	&Apache::lonxml::startredirection(); # we'll use redirection to fix up 
 	                                     # duedates.
@@ -1272,7 +1283,7 @@ sub start_part {
     } elsif ($target eq 'web' || $target eq 'grade' ||
 	     $target eq 'answer' || $target eq 'tex') {
 	if ($hidden || !$in_order_show) {
-	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
+	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
 	} else {
 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
 	    push (@Apache::inputtags::status,$status);
@@ -1288,7 +1299,8 @@ sub start_part {
 		( $status eq 'BANNED') ||
 		( $status eq 'UNAVAILABLE') ||
 		( $status eq 'INVALID_ACCESS')) {
-		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
+		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
+							   $style);
 		if ( $target eq "web" ) {
 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
 		} elsif ( $target eq 'tex' ) {
@@ -1390,14 +1402,14 @@ sub end_part {
 }
 
 sub start_preduedate {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     if ($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::lonhomework::scantronmode &&
 	    $Apache::inputtags::status['-1'] ne 'CAN_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",$parser);
+	    &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
 	}
     }
     return '';
@@ -1408,14 +1420,14 @@ sub end_preduedate {
 }
 
 sub start_postanswerdate {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     if ($target eq 'web' || $target eq 'grade') {
 	if ($Apache::lonhomework::scantronmode ||
 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
-	    &Apache::lonxml::get_all_text("/postanswerdate",$parser);
+	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
 	}
     } elsif ($target eq 'tex') {
-	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
+	&Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
     }
     return '';
 }
@@ -1425,7 +1437,7 @@ sub end_postanswerdate {
 }
 
 sub start_notsolved {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
 	$target eq 'tex') {
 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
@@ -1433,7 +1445,7 @@ sub start_notsolved {
 	if ($gradestatus =~ /^correct/ &&
 	    &Apache::response::show_answer()) {
 	    &Apache::lonxml::debug("skipping");
-	    &Apache::lonxml::get_all_text("/notsolved",$parser);
+	    &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
 	}
     }
     return '';
@@ -1444,13 +1456,13 @@ sub end_notsolved {
 }
 
 sub start_solved {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     if ($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/ ||
 	    !&Apache::response::show_answer()) {
-	    &Apache::lonxml::get_all_text("/solved",$parser);
+	    &Apache::lonxml::get_all_text("/solved",$parser,$style);
 	}
     }
     return '';
@@ -1461,7 +1473,7 @@ sub end_solved {
 }
 
 sub start_problemtype {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
 	$target eq 'tex' || $target eq 'analyze') {
@@ -1473,10 +1485,10 @@ sub start_problemtype {
 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
 	}
 	if ($mode eq 'show' && !$found) {
-	    &Apache::lonxml::get_all_text("/problemtype",$parser);
+	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
 	}
 	if ($mode eq 'hide' && $found) {
-	    &Apache::lonxml::get_all_text("/problemtype",$parser);
+	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
 	}
     } elsif ($target eq 'edit') {
 	$result .=&Apache::edit::tag_start($target,$token);
@@ -1510,12 +1522,12 @@ sub start_startouttext {
 }
 
 sub end_startouttext {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
     my $text='';
 
     if ($target eq 'edit') {
-	$text=&Apache::lonxml::get_all_text("endouttext",$parser);
+	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
 <td>".&mt('Delete:').
                  &Apache::edit::deletelist($target,$token)
@@ -1554,8 +1566,8 @@ sub end_endouttext {
 }
 
 sub delete_startouttext {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
     my $text=$$parser['-1']->get_text("/endouttext");
     my $ntoken=$$parser['-1']->get_token();
     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");