--- loncom/homework/structuretags.pm	2003/07/10 06:17:41	1.194
+++ loncom/homework/structuretags.pm	2003/10/03 15:27:56	1.200.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.194 2003/07/10 06:17:41 www Exp $
+# $Id: structuretags.pm,v 1.200.2.2 2003/10/03 15:27:56 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -39,14 +39,14 @@ use Apache::lonmenu;
 
 BEGIN {
     &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext',
-'simpleeditbutton'));
+'simpleeditbutton','definetag'));
 }
 
 sub start_web {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    if (!($target eq 'web' || $target eq 'edit' || $target eq 'modified' ||
-	  $target eq 'answer' || $target eq 'grade' || $target eq 'meta' )) {
-	my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
+    my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
+    if ($target eq 'web') {
+	return $bodytext;
     }
     return '';
 }
@@ -57,12 +57,12 @@ sub end_web {
 
 sub start_tex {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    if (!($target eq 'tex' || $target eq 'edit' || $target eq 'modified' ||
-	  $target eq 'answer' || $target eq 'grade' || $target eq 'meta' )) {
-	&Apache::lonxml::debug("tex 1");
-	my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
+    my $result='';
+    my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
+    if ($target eq 'tex') {
+	return $bodytext.' ';
     }
-    return '';
+    return $result;;
 }
 
 sub end_tex {
@@ -72,7 +72,7 @@ sub end_tex {
 sub page_start {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my %found;
-    foreach my $taginside ($tagstack) {
+    foreach my $taginside (@$tagstack) {
 	foreach my $taglookedfor ('html','body','form') {
 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
 	}
@@ -91,6 +91,7 @@ sub page_start {
 	    'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
 	my $background=&Apache::lonxml::get_param('background',$parstack,
 						  $safeeval);
+	if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
 	if ($background) {
 	    $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 		$background;
@@ -98,12 +99,15 @@ sub page_start {
 	} else {
 	    my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
 						   $safeeval);
-	    if ($bgcolor) {
+	    if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
 		$body_tag_start.='bgcolor="'.$bgcolor.'" ';
 	    } else {
 		$body_tag_start.='bgcolor="#ffffff"';
 	    }
 	}
+	if ($ENV{'browser.fontenhance'} eq 'on') {
+	    $body_tag_start.=' style="font-size: x-large;" ';
+	}
 	$body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
 	if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
 	    my ($symb,undef,undef,undef,$publicuser)=
@@ -596,6 +600,30 @@ sub end_library {
     return $result;
 }
 
+sub start_definetag {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+
+    my $result;
+
+    my $name = $token->[2]->{'name'};
+    my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
+    if ($name=~/^\//) {
+	$result=
+ '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
+    } else {
+	$result=
+ '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
+    }
+    $skip=~s/\</\&lt\;/gs;
+    $skip=~s/\>/\&gt\;/gs;
+    $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
+    return $result;
+}
+
+sub end_definetag {
+    return '';
+}
+
 sub start_block {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
 
@@ -902,11 +930,17 @@ sub start_part {
 		if ( $target eq "web" ) {
 		    $result="<br />Part is not open to be viewed. It $accessmsg<br />";
 		} elsif ( $target eq 'tex' ) {
-		    $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
+		    if (not $ENV{'form.problem_split'}=~/yes/) {
+			$result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
+		    } else {
+			$result="\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\";
+		    }
 		}
 	    } else {
 		if ($target eq 'tex') {
-		    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
+		    if (not $ENV{'form.problem_split'}=~/yes/) {
+			$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
+		    }
 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
 		    if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
 		}
@@ -941,7 +975,9 @@ sub end_part {
     } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
 							$target);
-	if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}
+	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
+	    $gradestatus='';
+	}
 	$result=$gradestatus;
     } elsif ($target eq 'edit') {
 	$result=&Apache::edit::end_table();
@@ -1091,7 +1127,8 @@ sub start_simpleeditbutton {
         my $url=$ENV{'REQUEST_URI'};
         $url=~s/\?.*$//;
 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
-                '<a href="'.$url.'/smpedit">Simple Problem Editor</a> - Note: it can take up to 10 minutes for changes to take effect for all users.</td></tr></table><br />';
+                '<a href="'.$url.'/smpedit">Simple Problem Editor</a> - Note: it can take up to 10 minutes for changes to take effect for all users.'.
+&Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
     }
     return $result;
 }