--- loncom/interface/loncommon.pm	2008/09/19 22:50:01	1.679.2.1
+++ loncom/interface/loncommon.pm	2009/01/12 04:39:30	1.692.2.12
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.679.2.1 2008/09/19 22:50:01 raeburn Exp $
+# $Id: loncommon.pm,v 1.692.2.12 2009/01/12 04:39:30 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -61,6 +61,7 @@ use POSIX qw(strftime mktime);
 use Apache::lonmenu();
 use Apache::lonenc();
 use Apache::lonlocal;
+use Apache::lonnet();
 use HTML::Entities;
 use Apache::lonhtmlcommon();
 use Apache::loncoursedata();
@@ -68,6 +69,7 @@ use Apache::lontexconvert();
 use Apache::lonclonecourse();
 use LONCAPA qw(:DEFAULT :match);
 use DateTime::TimeZone;
+use DateTime::Locale::Catalog;
 
 # ---------------------------------------------- Designs
 use vars qw(%defaultdesign);
@@ -657,6 +659,57 @@ sub select_timezone {
    return $output;
 }
 
+sub select_datelocale {
+    my ($name,$selected,$onchange,$includeempty)=@_;
+    my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
+    if ($includeempty) {
+        $output .= '<option value=""';
+        if ($selected eq '') {
+            $output .= ' selected="selected" ';
+        }
+        $output .= '> </option>';
+    }
+    my (@possibles,%locale_names);
+    my @locales = DateTime::Locale::Catalog::Locales;
+    foreach my $locale (@locales) {
+        if (ref($locale) eq 'HASH') {
+            my $id = $locale->{'id'};
+            if ($id ne '') {
+                my $en_terr = $locale->{'en_territory'};
+                my $native_terr = $locale->{'native_territory'};
+                my @languages = &Apache::lonlocal::preferred_languages();
+                if (grep(/^en$/,@languages) || !@languages) {
+                    if ($en_terr ne '') {
+                        $locale_names{$id} = '('.$en_terr.')';
+                    } elsif ($native_terr ne '') {
+                        $locale_names{$id} = $native_terr;
+                    }
+                } else {
+                    if ($native_terr ne '') {
+                        $locale_names{$id} = $native_terr.' ';
+                    } elsif ($en_terr ne '') {
+                        $locale_names{$id} = '('.$en_terr.')';
+                    }
+                }
+                push (@possibles,$id);
+            }
+        }
+    }
+    foreach my $item (sort(@possibles)) {
+        $output.= '<option value="'.$item.'"';
+        if ($item eq $selected) {
+            $output.=' selected="selected"';
+        }
+        $output.=">$item";
+        if ($locale_names{$item} ne '') {
+            $output.="  $locale_names{$item}</option>\n";
+        }
+        $output.="</option>\n";
+    }
+    $output.="</select>";
+    return $output;
+}
+
 =pod
 
 =item * &linked_select_forms(...)
@@ -873,7 +926,7 @@ sub help_open_topic {
     if ($text ne "") {
 	$template .= 
             "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
-            "<td bgcolor='#5555FF'><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
+            "<td bgcolor='#5555FF'><span class=\"LC_nobreak\"><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
     }
 
     # Add the graphic
@@ -882,7 +935,7 @@ sub help_open_topic {
     $template .= <<"ENDTEMPLATE";
  <a target="_top" href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
 ENDTEMPLATE
-    if ($text ne '') { $template.='</td></tr></table>' };
+    if ($text ne '') { $template.='</span></td></tr></table>' };
     return $template;
 
 }
@@ -890,24 +943,30 @@ ENDTEMPLATE
 # This is a quicky function for Latex cheatsheet editing, since it 
 # appears in at least four places
 sub helpLatexCheatsheet {
-    my $other = shift;
+    my ($topic,$text,$not_author) = @_;
+    my $out;
     my $addOther = '';
-    if ($other) {
-	$addOther = Apache::loncommon::help_open_topic($other, shift,
-						       undef, undef, 600) .
-							   '</td><td>';
-    }
-    return '<table><tr><td>'.
-	$addOther .
-	&Apache::loncommon::help_open_topic("Greek_Symbols",&mt('Greek Symbols'),
-					    undef,undef,600)
-	.'</td><td>'.
-	&Apache::loncommon::help_open_topic("Other_Symbols",&mt('Other Symbols'),
-					    undef,undef,600)
-	.'</td><td>'.
-	&Apache::loncommon::help_open_topic("Authoring_Output_Tags",&mt('Output Tags'),
-	                                    undef,undef,600)
-	.'</td></tr></table>';
+    if ($topic) {
+	$addOther = Apache::loncommon::help_open_topic($topic,$text,
+						       undef, undef, 600).
+							'</td><td>';
+    }
+    $out = '<table><tr><td>'.
+	   $addOther.
+	   &Apache::loncommon::help_open_topic("Greek_Symbols",&mt('Greek Symbols'),
+					       undef,undef,600).
+	   '</td><td>'.
+	   &Apache::loncommon::help_open_topic("Other_Symbols",&mt('Other Symbols'),
+					       undef,undef,600).
+	   '</td>';
+    unless ($not_author) {
+        $out .= '<td>'.
+	        &Apache::loncommon::help_open_topic("Authoring_Output_Tags",&mt('Output Tags'),
+	                                            undef,undef,600).
+	        '</td>';
+    }
+    $out .= '</tr></table>';
+    return $out;
 }
 
 sub general_help {
@@ -1507,9 +1566,9 @@ sub create_text_file {
     $fh = Apache::File->new('>/home/httpd'.$filename);
     if (! defined($fh)) {
         $r->log_error("Couldn't open $filename for output $!");
-        $r->print("Problems occured in creating the output file.  ".
-                  "This error has been logged.  ".
-                  "Please alert your LON-CAPA administrator.");
+        $r->print(&mt('Problems occurred in creating the output file. '
+                     .'This error has been logged. '
+                     .'Please alert your LON-CAPA administrator.'));
     }
     return ($fh,$filename)
 }
@@ -2664,6 +2723,42 @@ sub flush_email_cache {
     &Apache::lonnet::devalidate_cache_new('emailscache',$id);
 }
 
+# -------------------------------------------------------------------- getlangs
+
+=pod
+
+=item * &getlangs($uname,$udom)
+
+Gets a user's language preference and returns it as a hash with key:
+language.
+
+=cut
+
+sub getlangs {
+    my ($uname,$udom) = @_;
+    if (!$udom)  { $udom =$env{'user.domain'}; }
+    if (!$uname) { $uname=$env{'user.name'};   }
+    my $id=$uname.':'.$udom;
+    my ($langs,$cached)=&Apache::lonnet::is_cached_new('userlangs',$id);
+    if ($cached) {
+        return %{$langs};
+    } else {
+        my %loadlangs=&Apache::lonnet::get('environment',['languages'],
+                                           $udom,$uname);
+        &Apache::lonnet::do_cache_new('userlangs',$id,\%loadlangs);
+        return %loadlangs;
+    }
+}
+
+sub flush_langs_cache {
+    my ($uname,$udom)=@_;
+    if (!$udom)  { $udom =$env{'user.domain'}; }
+    if (!$uname) { $uname=$env{'user.name'};   }
+    return if ($udom eq 'public' && $uname eq 'public');
+    my $id=$uname.':'.$udom;
+    &Apache::lonnet::devalidate_cache_new('userlangs',$id);
+}
+
 # ------------------------------------------------------------------ Screenname
 
 =pod
@@ -2945,7 +3040,7 @@ sub fileextensions {
 
 sub display_languages {
     my %languages=();
-    foreach my $lang (&preferred_languages()) {
+    foreach my $lang (&Apache::lonlocal::preferred_languages()) {
 	$languages{$lang}=1;
     }
     &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
@@ -2957,54 +3052,9 @@ sub display_languages {
     return %languages;
 }
 
-sub preferred_languages {
-    my @languages=();
-    if (($env{'request.role.adv'}) && ($env{'form.languages'})) {
-        @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$env{'form.languages'}));
-    }
-    if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
-	@languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
-	         $env{'course.'.$env{'request.course.id'}.'.languages'}));
-    }
-
-    if ($env{'environment.languages'}) {
-	@languages=(@languages,
-		    split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'}));
-    }
-    my $browser=$ENV{'HTTP_ACCEPT_LANGUAGE'};
-    if ($browser) {
-	my @browser = 
-	    map { (split(/\s*;\s*/,$_))[0] } (split(/\s*,\s*/,$browser));
-	push(@languages,@browser);
-    }
-
-    foreach my $domtype ($env{'user.domain'},$env{'request.role.domain'},
-                         $Apache::lonnet::perlvar{'lonDefDomain'}) {
-        if ($domtype ne '') {
-            my %domdefs = &Apache::lonnet::get_domain_defaults($domtype);
-            if ($domdefs{'lang_def'} ne '') {
-                push(@languages,$domdefs{'lang_def'});
-            }
-        }
-    }
-# turn "en-ca" into "en-ca,en"
-    my @genlanguages;
-    foreach my $lang (@languages) {
-	unless ($lang=~/\w/) { next; }
-	push(@genlanguages,$lang);
-	if ($lang=~/(\-|\_)/) {
-	    push(@genlanguages,(split(/(\-|\_)/,$lang))[0]);
-	}
-    }
-    #uniqueify the languages list
-    my %count;
-    @genlanguages = map { $count{$_}++ == 0 ? $_ : () } @genlanguages;
-    return @genlanguages;
-}
-
 sub languages {
     my ($possible_langs) = @_;
-    my @preferred_langs = &preferred_languages();
+    my @preferred_langs = &Apache::lonlocal::preferred_languages();
     if (!ref($possible_langs)) {
 	if( wantarray ) {
 	    return @preferred_langs;
@@ -3163,7 +3213,7 @@ sub relative_to_absolute {
     }
     $thisdir=~s-/[^/]*$--;
     foreach my $link (@rlinks) {
-	unless (($link=~/^http:\/\//i) ||
+	unless (($link=~/^https?\:\/\//i) ||
 		($link=~/^\//) ||
 		($link=~/^javascript:/i) ||
 		($link=~/^mailto:/i) ||
@@ -3348,16 +3398,21 @@ sub pprmlink {
 
 
 sub timehash {
-    my @ltime=localtime(shift);
-    return ( 'seconds' => $ltime[0],
-             'minutes' => $ltime[1],
-             'hours'   => $ltime[2],
-             'day'     => $ltime[3],
-             'month'   => $ltime[4]+1,
-             'year'    => $ltime[5]+1900,
-             'weekday' => $ltime[6],
-             'dayyear' => $ltime[7]+1,
-             'dlsav'   => $ltime[8] );
+    my ($thistime) = @_;
+    my $timezone = &Apache::lonlocal::gettimezone();
+    my $dt = DateTime->from_epoch(epoch => $thistime)
+                     ->set_time_zone($timezone);
+    my $wday = $dt->day_of_week();
+    if ($wday == 7) { $wday = 0; }
+    return ( 'second' => $dt->second(),
+             'minute' => $dt->minute(),
+             'hour'   => $dt->hour(),
+             'day'     => $dt->day_of_month(),
+             'month'   => $dt->month(),
+             'year'    => $dt->year(),
+             'weekday' => $wday,
+             'dayyear' => $dt->day_of_year(),
+             'dlsav'   => $dt->is_dst() );
 }
 
 sub utc_string {
@@ -3367,6 +3422,24 @@ sub utc_string {
 
 sub maketime {
     my %th=@_;
+    my ($epoch_time,$timezone,$dt);
+    $timezone = &Apache::lonlocal::gettimezone();
+    eval {
+        $dt = DateTime->new( year   => $th{'year'},
+                             month  => $th{'month'},
+                             day    => $th{'day'},
+                             hour   => $th{'hour'},
+                             minute => $th{'minute'},
+                             second => $th{'second'},
+                             time_zone => $timezone,
+                         );
+    };
+    if (!$@) {
+        $epoch_time = $dt->epoch;
+        if ($epoch_time) {
+            return $epoch_time;
+        }
+    }
     return POSIX::mktime(
         ($th{'seconds'},$th{'minutes'},$th{'hours'},
          $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
@@ -3849,7 +3922,14 @@ sub get_domainconf {
         if (ref($domconfig{'login'}) eq 'HASH') {
             if (keys(%{$domconfig{'login'}})) {
                 foreach my $key (keys(%{$domconfig{'login'}})) {
-                    $designhash{$udom.'.login.'.$key}=$domconfig{'login'}{$key};
+                    if (ref($domconfig{'login'}{$key}) eq 'HASH') {
+                        foreach my $img (keys(%{$domconfig{'login'}{$key}})) {
+                            $designhash{$udom.'.login.'.$key.'_'.$img} =
+                                $domconfig{'login'}{$key}{$img};
+                        }
+                    } else {
+                        $designhash{$udom.'.login.'.$key}=$domconfig{'login'}{$key};
+                    }
                 }
             } else {
                 $legacy{'login'} = 1;
@@ -4547,7 +4627,6 @@ table.LC_docs_path td.LC_docs_path_compo
 td.LC_table_cell_checkbox {
   text-align: center;
 }
-
 table#LC_mainmenu td.LC_mainmenu_column {
     vertical-align: top;
 }
@@ -4561,7 +4640,7 @@ table#LC_mainmenu td.LC_mainmenu_column
 .LC_menubuttons_link {
   text-decoration: none;
 }
-
+/*2008--9-5: new menu style sheet.Changed category*/
 .LC_menubuttons_category {
   color: $font;
   background: $pgbg;
@@ -4632,6 +4711,10 @@ td.LC_menubuttons_img {
   font-size: smaller;
 }
 
+.LC_mail_functions {
+    font-weight: bold;
+}
+
 table.LC_aboutme_port {
   border: 0px;
   border-collapse: collapse;
@@ -4664,6 +4747,11 @@ table.LC_prior_tries tr th {
   background-color: $data_table_head;
   font-size: smaller;
 }
+table.LC_data_table tr.LC_info_row > td {
+  background-color: #CCC;
+  font-weight: bold;
+  text-align: left;
+}
 table.LC_data_table tr.LC_odd_row > td, 
 table.LC_aboutme_port tr td {
   background-color: $data_table_light;
@@ -5418,6 +5506,33 @@ img.stift{
   border-width:0;
   vertical-align:middle;
 }
+
+table#LC_mainmenu{
+ margin-top:10px;
+ width:80%;
+
+}
+
+table#LC_mainmenu td.LC_mainmenu_col_fieldset{
+  vertical-align: top;
+  width: 45%;
+}
+.LC_mainmenu_fieldset_category {
+  color: $font;
+  background: $pgbg;
+  font-family: $sans;
+  font-size: small;
+  font-weight: bold;
+}
+fieldset#LC_mainmenu_fieldset {
+  margin:0px 10px 10px 0px;
+
+}
+
+div.LC_createcourse {
+    margin: 10px 10px 10px 10px;
+}
+
 END
 }
 
@@ -6448,19 +6563,35 @@ sub default_quota {
         if ($inststatus ne '') {
             my @statuses = split(/:/,$inststatus);
             foreach my $item (@statuses) {
-                if ($quotahash{'quotas'}{$item} ne '') {
-                    if ($defquota eq '') {
-                        $defquota = $quotahash{'quotas'}{$item};
-                        $settingstatus = $item;
-                    } elsif ($quotahash{'quotas'}{$item} > $defquota) {
-                        $defquota = $quotahash{'quotas'}{$item};
-                        $settingstatus = $item;
+                if (ref($quotahash{'quotas'}{'defaultquota'}) eq 'HASH') {
+                    if ($quotahash{'quotas'}{'defaultquota'}{$item} ne '') {
+                        if ($defquota eq '') {
+                            $defquota = $quotahash{'quotas'}{'defaultquota'}{$item};
+                            $settingstatus = $item;
+                        } elsif ($quotahash{'quotas'}{'defaultquota'}{$item} > $defquota) {
+                            $defquota = $quotahash{'quotas'}{'defaultquota'}{$item};
+                            $settingstatus = $item;
+                        }
+                    }
+                } else {
+                    if ($quotahash{'quotas'}{$item} ne '') {
+                        if ($defquota eq '') {
+                            $defquota = $quotahash{'quotas'}{$item};
+                            $settingstatus = $item;
+                        } elsif ($quotahash{'quotas'}{$item} > $defquota) {
+                            $defquota = $quotahash{'quotas'}{$item};
+                            $settingstatus = $item;
+                        }
                     }
                 }
             }
         }
         if ($defquota eq '') {
-            $defquota = $quotahash{'quotas'}{'default'};
+            if (ref($quotahash{'quotas'}{'defaultquota'}) eq 'HASH') {
+                $defquota = $quotahash{'quotas'}{'defaultquota'}{'default'};
+            } else {
+                $defquota = $quotahash{'quotas'}{'default'};
+            }
             $settingstatus = 'default';
         }
     } else {
@@ -7605,7 +7736,7 @@ sub csv_print_select_table {
               &end_data_table_header_row()."\n");
     foreach my $array_ref (@$d) {
 	my ($value,$display,$defaultcol)=@{ $array_ref };
-	$r->print(&start_data_table_row().'<tr><td>'.$display.'</td>');
+	$r->print(&start_data_table_row().'<td>'.$display.'</td>');
 
 	$r->print('<td><select name=f'.$i.
 		  ' onchange="javascript:flip(this.form,'.$i.');">');
@@ -8302,8 +8433,10 @@ sub build_recipient_list {
     } elsif ($origmail ne '') {
         push(@recipients,$origmail);
     }
-    if ($defmail ne '') {
-        push(@recipients,$defmail);
+    if (defined($defmail)) {
+        if ($defmail ne '') {
+            push(@recipients,$defmail);
+        }
     }
     if ($otheremails) {
         my @others;
@@ -8939,7 +9072,9 @@ sub construct_course {
                    'policy.email',
                    'comment.email',
                    'pch.users.denied',
-                   'plc.users.denied'],
+                   'plc.users.denied',
+                   'hidefromcat',
+                   'categories'],
                    $$crsudom,$$crsunum);
     }
 
@@ -9167,10 +9302,10 @@ sub construct_course {
         $outcome .= ($fatal?$errtext:'read ok').' - ';
         my $title; my $url;
         if ($args->{'firstres'} eq 'syl') {
-	    $title='Syllabus';
+	    $title=&mt('Syllabus');
             $url='/public/'.$$crsudom.'/'.$$crsunum.'/syllabus';
         } else {
-            $title='Navigate Contents';
+            $title=&mt('Navigate Contents');
             $url='/adm/navmaps';
         }
 
@@ -9224,28 +9359,14 @@ sub icon {
     return &lonhttpdurl($iconname);
 } 
 
-sub lonhttpd_port {
-    my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
-    if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
-    # IE doesn't like a secure page getting images from a non-secure
-    # port (when logging we haven't parsed the browser type so default
-    # back to secure
-    if ((!exists($env{'browser.type'}) || $env{'browser.type'} eq 'explorer')
-	&& $ENV{'SERVER_PORT'} == 443) {
-	return 443;
-    }
-    return $lonhttpd_port;
-
-}
-
 sub lonhttpdurl {
+#
+# Had been used for "small fry" static images on separate port 8080.
+# Modify here if lightweight http functionality desired again.
+# Currently eliminated due to increasing firewall issues.
+#
     my ($url)=@_;
-
-    my $lonhttpd_port = &lonhttpd_port();
-    if ($lonhttpd_port == 443) {
-	return 'https://'.$ENV{'SERVER_NAME'}.$url;
-    }
-    return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
+    return $url;
 }
 
 sub connection_aborted {
@@ -9323,7 +9444,7 @@ sub init_user_environment {
 	}
 # Give them a new cookie
 	my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
-		                   : $now);
+		                   : $now.$$.int(rand(10000)));
 	$cookie="$username\_$id\_$domain\_$authhost";
     
 # Initialize roles
@@ -9411,6 +9532,11 @@ sub init_user_environment {
 	    }
 	}
 
+        foreach my $tool ('aboutme','blog','portfolio') {
+            $userenv{'availabletools.'.$tool} = 
+                &Apache::lonnet::usertools_access($username,$domain,$tool,'reload');
+        }
+
 	$env{'user.environment'} = "$lonids/$cookie.id";
 	
 	if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
@@ -9446,6 +9572,46 @@ sub _add_to_env {
     }
 }
 
+# --- Get the symbolic name of a problem and the url
+sub get_symb {
+    my ($request,$silent) = @_;
+    (my $url=$env{'form.url'}) =~ s-^https?\://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+    my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
+    if ($symb eq '') {
+        if (!$silent) {
+            $request->print("Unable to handle ambiguous references:$url:.");
+            return ();
+        }
+    }
+    &Apache::lonenc::check_decrypt(\$symb);
+    return ($symb);
+}
+
+# --------------------------------------------------------------Get annotation
+
+sub get_annotation {
+    my ($symb,$enc) = @_;
+
+    my $key = $symb;
+    if (!$enc) {
+        $key =
+            &Apache::lonnet::clutter((&Apache::lonnet::decode_symb($symb))[2]);
+    }
+    my %annotation=&Apache::lonnet::get('nohist_annotations',[$key]);
+    return $annotation{$key};
+}
+
+sub clean_symb {
+    my ($symb,$delete_enc) = @_;
+
+    &Apache::lonenc::check_decrypt(\$symb);
+    my $enc = $env{'request.enc'};
+    if ($delete_enc) {
+        delete($env{'request.enc'});
+    }
+
+    return ($symb,$enc);
+}
 
 =pod