--- loncom/interface/loncommon.pm 2012/04/04 21:04:55 1.1063
+++ loncom/interface/loncommon.pm 2012/04/04 23:06:52 1.1064
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# a pile of common routines
#
-# $Id: loncommon.pm,v 1.1063 2012/04/04 21:04:55 raeburn Exp $
+# $Id: loncommon.pm,v 1.1064 2012/04/04 23:06:52 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -6916,6 +6916,8 @@ sub headtag {
''.
&font_settings();
+ my $inhibitprint = &print_suppression();
+
if (!$args->{'frameset'}) {
$result .= &Apache::lonhtmlcommon::htmlareaheaders();
}
@@ -6961,6 +6963,7 @@ ADDMETA
if (!$args->{'no_auto_mt_title'}) { $title = &mt($title); }
$result .= ' LON-CAPA '.$title.''
.''
+ .$inhibitprint
.$head_extra;
return $result.'';
}
@@ -6985,6 +6988,82 @@ sub font_settings {
}
=pod
+
+=item * &print_suppression()
+
+In course context returns css which causes the body to be blank when media="print",
+if printout generation is unavailable for the current resource.
+
+This could be because:
+
+(a) printstartdate is in the future
+
+(b) printenddate is in the past
+
+(c) there is an active exam block with "printout"
+functionality blocked
+
+Users with pav, pfo or evb privileges are exempt.
+
+Inputs: none
+
+=cut
+
+
+sub print_suppression {
+ my $noprint;
+ if ($env{'request.course.id'}) {
+ my $scope = $env{'request.course.id'};
+ if ((&Apache::lonnet::allowed('pav',$scope)) ||
+ (&Apache::lonnet::allowed('pfo',$scope))) {
+ return;
+ }
+ if ($env{'request.course.sec'} ne '') {
+ $scope .= "/$env{'request.course.sec'}";
+ if ((&Apache::lonnet::allowed('pav',$scope)) ||
+ (&Apache::lonnet::allowed('pfo',$scope))) {
+ return;
+ }
+ }
+ my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ my $blocked = &blocking_status('printout',$cnum,$cdom);
+ if ($blocked) {
+ my $checkrole = "cm./$cdom/$cnum";
+ if ($env{'request.course.sec'} ne '') {
+ $checkrole .= "/$env{'request.course.sec'}";
+ }
+ unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) &&
+ ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
+ $noprint = 1;
+ }
+ }
+ unless ($noprint) {
+ my $symb = &Apache::lonnet::symbread();
+ if ($symb ne '') {
+ my $navmap = Apache::lonnavmaps::navmap->new();
+ if (ref($navmap)) {
+ my $res = $navmap->getBySymb($symb);
+ if (ref($res)) {
+ if (!$res->resprintable()) {
+ $noprint = 1;
+ }
+ }
+ }
+ }
+ }
+ if ($noprint) {
+ return <<"ENDSTYLE";
+
+ENDSTYLE
+ }
+ }
+ return;
+}
+
+=pod
=item * &xml_begin()