--- loncom/interface/lonhtmlcommon.pm	2009/05/16 18:06:41	1.214
+++ loncom/interface/lonhtmlcommon.pm	2009/06/04 16:33:08	1.220
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.214 2009/05/16 18:06:41 tempelho Exp $
+# $Id: lonhtmlcommon.pm,v 1.220 2009/06/04 16:33:08 bisitz Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -77,12 +77,12 @@ sub confirm_success {
    my ($message,$failure)=@_;
    if ($failure) {
       return '<span class="LC_error">'."\n"
-            .'<img src="/adm/lonIcons/navmap.wrong.gif" /> '."\n"
+            .'<img src="/adm/lonIcons/navmap.wrong.gif" alt="'.&mt('Error').'" /> '."\n"
             .$message."\n"
             .'</span>'."\n";
    } else {
       return '<span class="LC_success">'."\n"
-            .'<img src="/adm/lonIcons/navmap.correct.gif" /> '."\n"
+            .'<img src="/adm/lonIcons/navmap.correct.gif" alt="'.&mt('Ok').'" /> '."\n"
             .$message."\n"
             .'</span>'."\n";
    }
@@ -130,11 +130,13 @@ sub dragmath_js {
     my ($popup) = @_;
     return <<ENDDRAGMATHJS;
                 <script type="text/javascript">
+                // <![CDATA[
                   function mathedit(textarea, doc) {
                      targetEntry = textarea;
                      targetDoc   = doc;
                      newwin  = window.open("/adm/dragmath/applet/$popup.html","","width=565,height=500,resizable");
                   }
+                // ]]>
                 </script>
 
 ENDDRAGMATHJS
@@ -161,7 +163,7 @@ sub authorbombs {
     foreach (keys %bombs) {
 	if ($_=~/^$udom\/$uname\//) {
 	    return '<a href="/adm/bombs/'.$url.
-		'"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" border="0" /></a>'.
+		'"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" alt="'.&mt('Bomb').'" border="0" /></a>'.
 		&Apache::loncommon::help_open_topic('About_Bombs');
 	}
     }
@@ -430,6 +432,7 @@ sub date_setter {
     my $result = "\n<!-- $dname date setting form -->\n";
     $result .= <<ENDJS;
 <script type="text/javascript">
+// <![CDATA[
     function $dname\_checkday() {
         var day   = document.$formname.$dname\_day.value;
         var month = document.$formname.$dname\_month.value;
@@ -490,6 +493,7 @@ document.$formname.$dname\_year.value,
         }
 
     }
+// ]]>
 </script>
 ENDJS
     $result .= '  <span class="LC_nobreak">';
@@ -975,6 +979,7 @@ sub Create_PrgWin {
 	#the whole function called through timeout is due to issues
 	#in mozilla Read BUG #2665 if you want to know the whole story
 	&r_print($r,'<script type="text/javascript">'.
+        '// <![CDATA['.
         "var popwin;
          function openpopwin () {
          popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
@@ -985,7 +990,9 @@ sub Create_PrgWin {
 	      &mt('Starting').'" /><\\/form>'.$end_page.
               "\');".
         "popwin.document.close();}".
-        "\nwindow.setTimeout(openpopwin,0)</script>");
+        "\nwindow.setTimeout(openpopwin,0)".
+        '// ]]>'.
+        '</script>');
 	$prog_state{'formname'}='popremain';
 	$prog_state{'inputname'}="remaining";
     } elsif ($type eq 'inline') {
@@ -1018,10 +1025,14 @@ sub Create_PrgWin {
 # update progress
 sub Update_PrgWin {
     my ($r,$prog_state,$displayString)=@_;
-    &r_print($r,'<script type="text/javascript">'.$$prog_state{'window'}.'.document.'.
+    &r_print($r,'<script type="text/javascript">'.
+        '// <![CDATA['.
+        $$prog_state{'window'}.'.document.'.
 	     $$prog_state{'formname'}.'.'.
 	     $$prog_state{'inputname'}.'.value="'.
-	     $displayString.'";</script>');
+	     $displayString.'";'.
+        '// ]]>'.
+        '</script>');
     $$prog_state{'laststart'}=&Time::HiRes::time();
 }
 
@@ -1074,11 +1085,15 @@ sub Increment_PrgWin {
     if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
         $lasttime = '';
     }
-    &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
+    &r_print($r,'<script>'.
+        '// <![CDATA['.
+        $$prog_state{'window'}.'.document.'.
 	     $$prog_state{'formname'}.'.'.
 	     $$prog_state{'inputname'}.'.value="'.
 	     $$prog_state{'done'}.'/'.$$prog_state{'max'}.
-	     ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
+	     ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.
+        '// ]]>'.
+        '</script>');
     $$prog_state{'laststart'}=&Time::HiRes::time();
 }
 
@@ -1086,7 +1101,11 @@ sub Increment_PrgWin {
 sub Close_PrgWin {
     my ($r,$prog_state)=@_;
     if ($$prog_state{'type'} eq 'popup') {
-	&r_print($r,'<script>popwin.close()</script>'."\n");
+        &r_print($r,'<script>'.
+            '// <![CDATA['.
+            'popwin.close()'.
+            '// ]]>'.
+            '</script>'."\n");
     } elsif ($$prog_state{'type'} eq 'inline') {
 	&Update_PrgWin($r,$prog_state,&mt('Done'));
     }
@@ -1168,6 +1187,7 @@ sub spellheader {
     my $nothing=&javascript_nothing();
     return (<<ENDCHECK);
 <script type="text/javascript"> 
+// <![CDATA[
 //<!-- BEGIN LON-CAPA Internal
 var checkwin;
 
@@ -1178,6 +1198,7 @@ function spellcheckerwindow(string) {
     checkwin.document.close();
 }
 // END LON-CAPA Internal -->
+// ]]>
 </script>
 ENDCHECK
 }
@@ -1251,7 +1272,8 @@ sub htmlareaselectactive {
     my @fields=@_;
     unless (&htmlareabrowser()) { return ''; }
     if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
-    my $output='<script type="text/javascript" defer="1">';
+    my $output='<script type="text/javascript" defer="1">'
+              .'// <![CDATA[';
     my $lang = &htmlarea_lang();
     foreach my $field (@fields) {
 	$output.="
@@ -1264,7 +1286,9 @@ sub htmlareaselectactive {
     oFCKeditor.Config['DefaultLanguage'] = '$lang';
 }";
     }
-    $output.="\nwindow.status='Activated Editfields';\n</script><br />".
+    $output.="\nwindow.status='Activated Editfields';\n"
+            .'// ]]>'
+            .'</script><br />'.
 	&disablelink(@fields);
     return $output;
 }
@@ -1330,13 +1354,13 @@ returns: nothing
     my @Crumbs;
     
     sub breadcrumbs {
-        my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt, $no_realBreadcrumb) = @_;
+        my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt, $CourseBreadcrumbs) = @_;
         #
-	$css_class ||= 'LC_breadcrumbs';
+        $css_class ||= 'LC_breadcrumbs';
         my $Str1 = '<div id="LC_head_subbox"><ol id="LC_MenuBreadcrumbs">';
 	
-		if($no_realBreadcrumb){
-			$Str1 = '<ul class="LC_CourseBreadcrumbs">';
+		if($CourseBreadcrumbs){
+			$Str1 = '<ul id="LC_CourseBreadcrumbs">';
 		}
 
         my $Str = '';
@@ -1344,14 +1368,14 @@ returns: nothing
         # Make the faq and bug data cascade
         my $faq = '';
         my $bug = '';
-	my $help='';
-	# Crumb Symbol
-	my $crumbsymbol = '&raquo;&nbsp;';
+        my $help='';
+        # Crumb Symbol
+        my $crumbsymbol = '&raquo;&nbsp;';
         # The last breadcrumb does not have a link, so handle it separately.
         my $last = pop(@Crumbs);
         #
         # The first one should be the course or a menu link
-	if (!defined($menulink)) { $menulink=1; }
+        if (!defined($menulink)) { $menulink=1; }
         if ($menulink) {
             my $description = 'Menu';
             my $no_mt_descr = 0;
@@ -1361,35 +1385,34 @@ returns: nothing
                     $env{'course.'.$env{'request.course.id'}.'.description'};
                 $no_mt_descr = 1;
             }
-            unshift(@Crumbs,{
-                    href   =>'/adm/menu',
-                    title  =>'Go to main menu',
-                    target =>'_top',
-                    text   =>$description,
-                    no_mt  =>$no_mt_descr,
-                });
+            $menulink =  {  href   =>'/adm/menu',
+                            title  =>'Go to main menu',
+                            target =>'_top',
+                            text   =>$description,
+                            no_mt  =>$no_mt_descr, };
+            if($last) {
+                #$last set, so we have some crumbs
+                unshift(@Crumbs,$menulink);
+            } else {
+                #only menulink crumb present
+                $last = $menulink;
+            }
         }
-        my $links .= '<li>'. 
-            join('</li><li>'.$crumbsymbol,
+        my $links = join "", 
                  map {
-                     $faq = $_->{'faq'} if (exists($_->{'faq'}));
-                     $bug = $_->{'bug'} if (exists($_->{'bug'}));
+                     $faq  = $_->{'faq'}  if (exists($_->{'faq'}));
+                     $bug  = $_->{'bug'}  if (exists($_->{'bug'}));
                      $help = $_->{'help'} if (exists($_->{'help'}));
-                     my $result = '<a href="'.$_->{'href'}.'" ';
-                     if (defined($_->{'target'}) && $_->{'target'} ne '') {
-                         $result .= 'target="'.$_->{'target'}.'" ';
-                     }
-			# set the possible translation for title 
-		     if ($_->{'no_mt'}) {
-			 $result .='title="'.$_->{'title'}.'">'.
-			     $_->{'text'}.'</a>';
-		     } else {
-			 $result .='title="'.&mt($_->{'title'}).'">'.
-			     &mt($_->{'text'}).'</a>';
-		     }
-                     $result;
-                     } @Crumbs
-                 ).'</li>';
+
+                     my $result = htmltag( 'a', 
+                                           $_->{no_mt} ? $_->{text} : mt($_->{text}), 
+                                           { 
+                                               href   => $_->{href},
+                                               title  => $_->{no_mt} ? $_->{title} : mt($_->{title}),
+                                               target => $_->{target},
+                                           });
+                     $result = htmltag( 'li', $crumbsymbol.$result);
+                     } @Crumbs;
 #Workaround for edit course. 
 	if(@Crumbs == 0 ){
 		$links .= '<li>' if ($links ne '');
@@ -1422,7 +1445,7 @@ returns: nothing
         #
 		
 
-		if($no_realBreadcrumb){
+		if($CourseBreadcrumbs){
         	$Str1 .= $links.'</ul>';
 		} else {
         	$Str1 .= $links.'</ol></div>';		
@@ -1641,6 +1664,7 @@ sub course_selection {
     my ($formname,$totcodes,$codetitles,$idlist,$idlist_titles) = @_;
     my $output = qq|
 <script type="text/javascript">
+// <![CDATA[
     function coursePick (formname) {
         for  (var i=0; i<formname.coursepick.length; i++) {
             if (formname.coursepick[i].value == 'category') {
@@ -1663,6 +1687,7 @@ sub course_selection {
             formname.courselist = '';
         }
     }
+// ]]>
 </script>
     |;
     my $courseform='<b>'.&Apache::loncommon::selectcourse_link
@@ -1767,7 +1792,6 @@ sub email_default_row {
 
 sub submit_row {
     my ($title,$cmd,$submit_text,$css_class) = @_;
-    $submit_text = &mt($submit_text);
     my $output = &row_title($title,$css_class,'LC_pick_box_submit');
     $output .= qq|
              <br />
@@ -1806,13 +1830,11 @@ sub course_custom_roles {
 #
 sub topic_bar {
     my ($imgnum,$title) = @_;
-    return '
-<div class="LC_topic_bar">
-    <img alt="'.&mt('Step [_1]',$imgnum).
-              ' "src="/res/adm/pages/bl_step'.$imgnum.'.gif" />&nbsp;
-    <span>'.$title.'</span>
-</div>
-';
+    return '<div class="LC_topic_bar">'
+          .'<img src="/res/adm/pages/bl_step'.$imgnum.'.gif"'
+          .' alt="'.&mt('Step [_1]',$imgnum).'" />'
+          .$title
+          .'</div>';
 }
 
 ##############################################
@@ -2064,6 +2086,53 @@ END
     return $scripttag;
 }
 
+
+# USAGE: htmltag(element, content, {attribute => value,...});
+#
+# EXAMPLES: 
+#  - htmltag('a', 'this is an anchor', {href  => 'www.example.com', 
+#                                       title => 'this is a title'})
+#
+#  - You might want to set up needed tags like: 
+#
+#     my $h3  = sub { return htmltag( "h3",  @_ ) };
+#
+#    ... and use them: $h3->("This is a headline")
+#
+#  - To set up a couple of tags, see sub inittags
+#
+# NOTES:
+# - Empty elements, such as <br/> are correctly terminated, 
+#   i.e. htmltag('br') returns <br/> 
+# - Empty attributes (title="") are filtered out.
+# - The function will not check for deprecated attributes.
+#
+# OUTPUT: content enclosed in xhtml conform tags
+sub htmltag{
+    return
+        qq|<$_[0]|
+        . join( '', map { qq| $_="${$_[2]}{$_}"| if ${$_[2]}{$_} } keys %{ $_[2] } )
+        . ($_[1] ? qq|>$_[1]</$_[0]>| : qq|/>|). "\n";
+};
+
+
+# USAGE: inittags(@tags);
+#
+# EXAMPLES:
+#  - my ($h1, $h2, $h3) = initTags( qw( h1 h2 h3 ) )
+#    $h1->("This is a headline") #Returns: <h1>This is a headline</h1>
+#
+# NOTES: See sub htmltag for further information.
+#
+# OUTPUT: List of subroutines. 
+sub inittags {
+    my @tags = @_;
+    return map { my $tag = $_;
+                 sub { return htmltag( $tag, @_ ) }
+               } @tags;
+}
+
+
 ##############################################
 ##############################################
 
@@ -2101,23 +2170,8 @@ END
 # --------------------------
 sub generate_menu {
     my @menu = @_;
-
-    # usage: $wrap->(element, content, {attribute => value,...});
-    # output: content enclosed in html conform tags
-    my $wrap = sub {
-        return
-            qq|<$_[0]|
-          . join( '', map { qq| $_="${$_[2]}{$_}"| } keys %{ $_[2] } )
-          . ($_[1] ? qq|>$_[1]</$_[0]>| : qq|/>|). "\n";
-    };
-    
     # subs for specific html elements
-    my $h3  = sub { return $wrap->( "h3",  @_ ) };
-    my $div = sub { return $wrap->( "div", @_ ) };
-    my $ul  = sub { return $wrap->( "ul",  @_ ) };
-    my $li  = sub { return $wrap->( "li",  @_ ) };
-    my $a   = sub { return $wrap->( "a",   @_ ) };
-    my $img = sub { return $wrap->( "img", @_ ) };
+    my ($h3, $div, $ul, $li, $a, $img) = inittags( qw(h3 div ul li a img) ); 
     
     my @categories; # each element represents the entire markup for a category