--- rat/lonpage.pm	2015/07/17 19:00:47	1.110
+++ rat/lonpage.pm	2016/08/10 04:37:32	1.111.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Page Handler
 #
-# $Id: lonpage.pm,v 1.110 2015/07/17 19:00:47 raeburn Exp $
+# $Id: lonpage.pm,v 1.111.2.2 2016/08/10 04:37:32 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -40,6 +40,7 @@ use Apache::lonhtmlcommon;
 use Apache::lonxml();
 use Apache::lonlocal;
 use Apache::lonmenu;
+use Apache::lonhomework;
 use HTML::TokeParser;
 use GDBM_File;
 use Apache::lonsequence;
@@ -187,6 +188,18 @@ sub handler {
               my $firstres=$hash{'map_start_'.$requrl};
               my $lastres=$hash{'map_finish_'.$requrl};
               if (($firstres) && ($lastres)) {
+# ------------------------------------------------------------- Countdown Timer
+                  my $now = time;
+                  my ($pagefirstaccess,%hastimeleft,%countdowndisp);
+                  my ($pagesymb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
+                  if ($pagesymb && ($courseid ne '') && ($domain ne '') && ($name ne '')) {
+                      my %times=&Apache::lonnet::get('firstaccesstimes',
+                                                     [$courseid."\0".$pagesymb],
+                                                     $domain,$name);
+                      if ($times{$courseid."\0".$pagesymb} =~ /^\d+$/) {
+                          $pagefirstaccess = $times{$courseid."\0".$pagesymb};
+                      }
+                  }
 # ----------------------------------------------------------------- Render page
 
                   @rows=();
@@ -302,8 +315,8 @@ ENDEXT
                               my $output=Apache::lonnet::ssi($src,%posthash);
 			      $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
                               if (($target eq 'tex') || ($target eq 'tex_answer')) {
-				  $output =~ s/^([^&]+)\\begin{document}//;
-				  $output =~ s/\\end{document}//;
+				  $output =~ s/^([^&]+)\\begin\{document}//;
+				  $output =~ s/\\end\{document}//;
 #				  $output = '\parbox{\minipagewidth}{ '.$output.' }';
                                   #some additional cleanup necessary for LateX (due to limitations of table environment 
 				  $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
@@ -417,6 +430,59 @@ ENDEXT
                                       s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
                                   $output=~
                                       s/\<(input[^\>]+\Qonfocus=\"javascript:disableAutoComplete\E)\(\'([^\']+)\'\)(;\")/\<$1('$idprefix$2')$3/gsi;
+                                  unless ($hastimer) {
+                                      if ($src =~ /$LONCAPA::assess_re/) {
+                                          %Apache::lonhomework::history =
+                                              &Apache::lonnet::restore($symb,$courseid,$domain,$name);
+                                          my $type = 'problem';
+                                          if ($src =~ /\.task$/) {
+                                              $type = 'Task';
+                                          }
+                                          my ($status,$accessmsg,$slot_name,$slot) =
+                                              &Apache::lonhomework::check_slot_access('0',$type,$symb);
+                                          undef(%Apache::lonhomework::history);
+                                          my $probstatus = &Apache::lonnet::EXT("resource.0.problemstatus",$symb);
+                                          if (($status eq 'CAN_ANSWER') || (($status eq 'CANNOT_ANSWER') && 
+                                              (($probstatus eq 'no') || ($probstatus eq 'no_feedback_ever')))) {
+                                              my ($slothastime,$timerhastime);
+                                              if ($slot_name ne '') {
+                                                  if (ref($slot) eq 'HASH') {
+                                                      if (($slot->{'starttime'} < $now) &&
+                                                          ($slot->{'endtime'} > $now)) {
+                                                          $slothastime = $now - $slot->{'endtime'};
+                                                      }
+                                                  }
+                                              }
+                                              my $duedate = &Apache::lonnet::EXT("resource.0.duedate",$symb);
+                                              my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
+                                              if (@interval > 1) {
+                                                  my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
+                                                  if ($first_access > 0) {
+                                                      my $timeremains = $first_access+$interval[0] - $now;
+                                                      if ($timeremains > 0) {
+                                                          $timerhastime = $timeremains;
+                                                      }
+                                                  }
+                                              }
+                                              if (($duedate && $duedate > $now) ||
+                                                  (!$duedate && $timerhastime > 0) ||
+                                                  ($slot_name ne '' && $slothastime)) {
+                                                  if ((@interval > 1 && $timerhastime) ||
+                                                      ($type eq 'Task' && $slothastime)) {
+                                                      $countdowndisp{$symb} = 'inline';
+                                                      if ((@interval > 1) && ($timerhastime)) {
+                                                          $hastimeleft{$symb} = $timerhastime;
+                                                      } else {
+                                                          $hastimeleft{$symb} = $slothastime;
+                                                      }
+                                                  } else {
+                                                      $hastimeleft{$symb} = $duedate - $now;
+                                                      $countdowndisp{$symb} = 'none';
+                                                  }
+                                              }
+                                          }
+                                      }
+                                  }
                               }
                               $thisdir=~s/\/[^\/]*$//;
 			      foreach (@rlinks) {
@@ -483,6 +549,33 @@ ENDEXT
                                             '// ]]>'.
                                             "\n</script>\n";
                           }
+                          if (keys(%hastimeleft)) {
+                              my (%uniquetimes,%uniquedisplays);
+                              foreach my $item (values(%hastimeleft)) {
+                                  if (exists($uniquetimes{$item})) {
+                                      $uniquetimes{$item} ++; 
+                                  } else {
+                                      $uniquetimes{$item} = 1;
+                                  }
+                              }
+                              if (keys(%uniquetimes) == 1) {
+                                  my (%uniquedisplays,%uniquedones,$currdisp);
+                                  if (keys(%countdowndisp)) {
+                                      foreach my $item (values(%countdowndisp)) {
+                                          if (exists($uniquedisplays{$item})) {
+                                              $uniquedisplays{$item} ++;
+                                          } else {
+                                              $uniquedisplays{$item} = 1;
+                                          }
+                                      }
+                                      my @countdowndisplay = keys(%uniquedisplays);
+                                      if (scalar(@countdowndisplay) == 1) {
+                                          $currdisp = $countdowndisplay[0];
+                                      }
+                                  }
+                                  &add_countdown_timer($currdisp);
+                              }
+                          }
 # ------------------------------------------------------------------ Start body
 			  $r->print(&Apache::loncommon::start_page(undef,$allscript,
 								   {'force_register' => 1,
@@ -753,6 +846,35 @@ sub get_buttons {
     return $metainfo;
 }
 
+sub add_countdown_timer {
+    my ($currdisp) = @_;
+    my ($collapse,$expand,$alttxt,$title);
+    if ($currdisp eq 'inline') {
+        $collapse = '&#9658;&nbsp;';
+    } else {
+        $expand = '&#9668;&nbsp;';
+    }
+    unless ($env{'environment.icons'} eq 'iconsonly') {
+        $alttxt = &mt('Timer');
+        $title = $alttxt.'&nbsp;';
+    }
+    my $desc = &mt('Countdown to due date/time');
+    my $output = <<END;
+<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
+<span id="ddcountcollapse" class="LC_menubuttons_inline_text">
+$collapse
+</span></a>
+<span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span>
+<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
+<span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span>
+<img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a>
+END
+    &Apache::lonhtmlcommon::clear_breadcrumb_tools();
+    &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$output);
+    return;
+}
+
+
 1;
 __END__