--- loncom/homework/structuretags.pm	2011/07/28 03:13:58	1.495
+++ loncom/homework/structuretags.pm	2011/12/20 22:46:40	1.499
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.495 2011/07/28 03:13:58 raeburn Exp $
+# $Id: structuretags.pm,v 1.499 2011/12/20 22:46:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -208,7 +208,11 @@ sub page_start {
                 my $navmap = Apache::lonnavmaps::navmap->new();
                 if (ref($navmap)) {
                     my $mapres = $navmap->getResourceByUrl($map);
-                    unless ($mapres->is_page()) {
+                    my $is_page;
+                    if (ref($mapres)) {
+                        $is_page = $mapres->is_page();
+                    }
+                    unless ($is_page) {
                         $needs_upload = 1;
                     }
                 }
@@ -218,7 +222,11 @@ sub page_start {
                 my $navmap = Apache::lonnavmaps::navmap->new();
                 if (ref($navmap)) {
                     my $mapres = $navmap->getResourceByUrl($map);
-                    unless ($mapres->is_page()) {
+                    my $is_page;
+                    if (ref($mapres)) {
+                        $is_page = $mapres->is_page();
+                    }
+                    unless ($is_page) {
                         my $res = $navmap->getBySymb($symb);
                         if (ref($res)) {
                             my $partlist = $res->parts();
@@ -275,7 +283,7 @@ sub page_start {
         &Apache::lonhtmlcommon::clear_breadcrumbs();
         &Apache::lonhtmlcommon::add_breadcrumb({
             'text'  => 'Construction Space',
-            'href'  => &Apache::loncommon::authorspace(),
+            'href'  => &Apache::loncommon::authorspace($env{'request.uri'}),
         });
         # breadcrumbs (and tools) will be created 
         # in start_page->bodytag->innerregister
@@ -952,6 +960,9 @@ sub reset_problem_globals {
     undef(%Apache::lonhomework::history);
     undef(%Apache::lonhomework::results);
     undef($Apache::inputtags::part);
+    if ($type eq 'Task') {
+        undef($Apache::inputtags::slot_name);
+    }
 #don't undef this, lonhomework.pm takes care of this, we use this to 
 #detect if we try to do 2 problems in one file
 #   undef($Apache::lonhomework::parsing_a_problem);
@@ -1121,6 +1132,9 @@ sub start_problem {
 	    ( $status eq 'BANNED') ||
 	    ( $status eq 'UNAVAILABLE') ||
 	    ( $status eq 'NOT_IN_A_SLOT') ||
+            ( $status eq 'NOTRESERVABLE') ||
+            ( $status eq 'RESERVABLE') ||
+            ( $status eq 'RESERVABLE_LATER') ||
 	    ( $status eq 'INVALID_ACCESS')) {
 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
 						       $style);
@@ -1130,9 +1144,12 @@ sub start_problem {
 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
                 } elsif ($status eq 'NOT_IN_A_SLOT') {
                     $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
+                } elsif (($status eq 'RESERVABLE') || ($status eq 'RESERVABLE_LATER') ||
+                         ($status eq 'NOTRESERVABLE')) {
+                    $msg.='<h1>'.&mt('Access requires reservation to work at specific time/place.').'</h1>';
 		} elsif ($status ne 'NOT_YET_VIEWED') {
 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
-		}
+                }
 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
 		    $msg.=&mt('The problem ').$accessmsg;
 		} elsif ($status eq 'UNCHECKEDOUT') {
@@ -1141,6 +1158,16 @@ sub start_problem {
 		    $msg.=&firstaccess_msg($accessmsg,$symb);
 		} elsif ($status eq 'NOT_IN_A_SLOT') {
 		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
+                } elsif ($status eq 'RESERVABLE') {
+                    $msg.=&mt('Available to make a reservation.').' '.&mt('Reservation window closes [_1].',
+                              &Apache::lonnavmaps::timeToHumanString($accessmsg,'end')).
+                          '<br />'.
+                          &Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
+                } elsif ($status eq 'RESERVABLE_LATER') {
+                    $msg.=&mt('Window to make a reservation will open [_1].',
+                              &Apache::lonnavmaps::timeToHumanString($accessmsg,'start'));
+                } elsif ($status eq 'NOTRESERVABLE') {
+                    $msg.=&mt('Not available to make a reservation.');  
 		}
 		$result.=$msg.'<br />';
 	    } elsif ($target eq 'tex') {