--- loncom/interface/lonnavdisplay.pm 2014/05/20 20:30:59 1.27 +++ loncom/interface/lonnavdisplay.pm 2017/11/16 13:41:56 1.35 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA - +# Navigate Maps Display Handler # -# $Id: lonnavdisplay.pm,v 1.27 2014/05/20 20:30:59 musolffc Exp $ +# $Id: lonnavdisplay.pm,v 1.35 2017/11/16 13:41:56 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -38,7 +38,7 @@ use Apache::lonhtmlcommon(); use Apache::lonnet; use Apache::lonlocal; use Apache::londocs(); -#use Time::HiRes qw( gettimeofday tv_interval ); +use Apache::lonuserstate; sub handler { my $r = shift; @@ -47,76 +47,114 @@ sub handler { sub real_handler { my $r = shift; - #my $t0=[&gettimeofday()]; # Handle header-only request if ($r->header_only) { - if ($env{'browser.mathml'}) { - &Apache::loncommon::content_type($r,'text/xml'); - } else { - &Apache::loncommon::content_type($r,'text/html'); - } + &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; return OK; } # Check for critical messages and redirect if present. - my ($redirect,$url) = &Apache::loncommon::critical_redirect(300); + my ($redirect,$url) = &Apache::loncommon::critical_redirect(300,'contents'); if ($redirect) { &Apache::loncommon::content_type($r,'text/html'); $r->header_out(Location => $url); return REDIRECT; } +# ------------------------------------------------------------ Get query string + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sort', + 'showOnlyHomework', + 'postsymb','register']); + # Check if course needs to be re-initialized + my $loncaparev = $r->dir_config('lonVersion'); + my ($result,@reinit) = &Apache::loncommon::needs_coursereinit($loncaparev); + my %prog_state=(); + my $closure; - - # Send header, don't cache this page - if ($env{'browser.mathml'}) { - &Apache::loncommon::content_type($r,'text/xml'); - } else { + if ($result eq 'switch') { + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + $r->print(&Apache::loncommon::check_release_result(@reinit)); + return OK; + } elsif ($result eq 'update') { + my $cid = $env{'request.course.id'}; + my $cnum = $env{'course.'.$cid.'.num'}; + my $cdom = $env{'course.'.$cid.'.domain'}; &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + &startpage($r); + my $preamble = '
'. + '
'. + &mt('Your course session is being updated because of recent changes by course personnel.'). + ' '.&mt('Please be patient.').'
'. + '
'; + $closure = < +// + +ENDCLOSE + %prog_state = &Apache::lonhtmlcommon::Create_PrgWin($r,undef,$preamble); + &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Updating course')); + $r->rflush(); + my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum",\%prog_state,$r); + &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Finished')); + if ($ferr) { + &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); + $r->print($closure.&Apache::loncommon::end_page()); + my $requrl = $r->uri; + $env{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; + $env{'user.reinit'} = 1; + return HTTP_NOT_ACCEPTABLE; + } } - &Apache::loncommon::no_cache($r); - my %toplinkitems=(); + my $course_type = &Apache::loncommon::course_type(); + if (($course_type eq 'Placement') && (!$env{'request.role.adv'})) { + my $furl = &Apache::lonpageflip::first_accessible_resource(); + if ($result eq 'update') { + &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); + $r->print($closure.&Apache::loncommon::end_page()); + return OK; + } else { + &Apache::loncommon::content_type($r,'text/html'); + $r->header_out(Location => $furl); + return REDIRECT; + } + } # Create the nav map my $navmap = Apache::lonnavmaps::navmap->new(); if (!defined($navmap)) { + if ($result eq 'update') { + &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); + $r->print($closure.&Apache::loncommon::end_page()); + } my $requrl = $r->uri; $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized"; $env{'user.reinit'} = 1; return HTTP_NOT_ACCEPTABLE; } - $r->send_http_header; -# ------------------------------------------------------------ Get query string - &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sort','showOnlyHomework','postsymb','register']); - -# ----------------------------------------------------- Force menu registration - # Header - my $course_type = &Apache::loncommon::course_type(); - my $title = $course_type . ' Contents'; - my ($start_page,$args); - if ($env{'form.register'}) { - $args = {'force_register' => $env{'form.register'}}; - $start_page = &Apache::loncommon::start_page($title,undef,$args); + if ($result eq 'update') { + $r->rflush(); + &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); + $r->print($closure); + $r->rflush(); } else { - my $brcrum = [{href => '/adm/navmaps', - text => &mt($course_type . ' Contents'), - no_mt => 1}, - ]; - $args = {'bread_crumbs' => $brcrum}; - $start_page = &Apache::loncommon::start_page($title,undef,$args); + # Send header, don't cache this page + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + &startpage($r); } - $r->print($start_page. - ''); + &startContentScreen($r,'navmaps'); - $r->rflush(); + unless ($result eq 'update') { + $r->rflush(); + } # Check that it's defined if (!($navmap->courseMapDefined())) { @@ -127,6 +165,7 @@ sub real_handler { return OK; } + my %toplinkitems=(); my @resources = $navmap->retrieveResources(); my $sequenceCount = 0; my $problemCount = 0; @@ -293,8 +332,6 @@ sub real_handler { $r->print("

".&mt("This course is empty.")."

"); } } - #my $td=&tv_interval($t0); - #$r->print("
$td"); &endContentScreen($r); $r->print(&Apache::loncommon::end_page()); $r->rflush(); @@ -302,6 +339,33 @@ sub real_handler { return OK; } +sub startpage { + my ($r) = @_; +# ----------------------------------------------------- Force menu registration + # Header + my $course_type = &Apache::loncommon::course_type(); + my $title = $course_type . ' Contents'; + my ($start_page,$args); + if ($env{'form.register'}) { + $args = {'force_register' => $env{'form.register'}}; + $start_page = &Apache::loncommon::start_page($title,undef,$args); + } else { + my $brcrum = [{href => '/adm/navmaps', + text => &mt($course_type . ' Contents'), + no_mt => 1}, + ]; + $args = {'bread_crumbs' => $brcrum}; + $start_page = &Apache::loncommon::start_page($title,undef,$args); + } + $r->print($start_page. + ''); + return; +} + sub startContentScreen { my ($r,$mode)=@_;