--- loncom/interface/lonhtmlcommon.pm	2007/11/06 04:39:19	1.169
+++ loncom/interface/lonhtmlcommon.pm	2009/08/23 12:59:18	1.182.4.8
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.169 2007/11/06 04:39:19 raeburn Exp $
+# $Id: lonhtmlcommon.pm,v 1.182.4.8 2009/08/23 12:59:18 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -67,6 +67,87 @@ use LONCAPA;
 
 =pod
 
+=item confirm_success
+
+Successful completion of an operation message
+
+=cut
+
+sub confirm_success {
+   my ($message,$failure)=@_;
+   if ($failure) {
+      return '<span class="LC_error">'."\n"
+            .'<img src="/adm/lonIcons/navmap.wrong.gif" alt="'.&mt('Error').'" /> '."\n"
+            .$message."\n"
+            .'</span>'."\n";
+   } else {
+      return '<span class="LC_success">'."\n"
+            .'<img src="/adm/lonIcons/navmap.correct.gif" alt="'.&mt('OK').'" /> '."\n"
+            .$message."\n"
+            .'</span>'."\n";
+   }
+}
+
+##############################################
+##############################################
+
+=pod
+
+=item dragmath_button
+
+Creates a button that launches a dragmath popup-window, in which an 
+expression can be edited and pasted as LaTeX into a specified textarea. 
+
+  textarea - Name of the textarea to edit.
+  helpicon - If true, show a help icon to the right of the button.
+
+=cut
+
+sub dragmath_button {
+    my ($textarea,$helpicon) = @_;
+    my $help_text; 
+    if ($helpicon) {
+        $help_text = &Apache::loncommon::help_open_topic('Authoring_Math_Editor');
+    }
+    my $buttontext=&mt('Edit Math');
+    return <<ENDDRAGMATH;
+                <input type="button" value="$buttontext", onclick="javascript:mathedit('$textarea',document)" />$help_text
+ENDDRAGMATH
+}
+
+##############################################
+
+=pod
+
+=item dragmath_js
+
+Javascript used to open pop-up window containing dragmath applet which 
+can be used to paste LaTeX into a textarea.
+ 
+=cut
+
+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
+}
+
+
+##############################################
+##############################################
+
+=pod
+
 =item authorbombs
 
 =cut
@@ -231,7 +312,7 @@ sub checkbox {
         $Str .= 'value="'.$value.'"';
     } 
     if ($checked) {
-        $Str .= ' checked="1"';
+        $Str .= ' checked="checked"';
     }
     $Str .= ' />';
     return $Str;
@@ -253,7 +334,7 @@ sub radio {
         $Str .= 'value="'.$value.'"';
     } 
     if ($checked eq $value) {
-        $Str .= ' checked="1"';
+        $Str .= ' checked="checked"';
     }
     $Str .= ' />';
     return $Str;
@@ -311,6 +392,7 @@ The method used to restrict user input w
 sub date_setter {
     my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
         $no_hh_mm_ss,$defhour,$defmin,$defsec,$nolink) = @_;
+    my $now = time;
     my $wasdefined=1;
     if (! defined($state) || $state ne 'disabled') {
         $state = '';
@@ -319,28 +401,25 @@ sub date_setter {
         $no_hh_mm_ss = 0;
     }
     if ($currentvalue eq 'now') {
-	$currentvalue=time;
+	$currentvalue = $now;
     }
     if ((!defined($currentvalue)) || ($currentvalue eq '')) {
 	$wasdefined=0;
 	if ($includeempty) {
 	    $currentvalue = 0;
 	} else {
-	    $currentvalue = time;
+	    $currentvalue = $now;
 	}
     }
     # other potentially useful values:     wkday,yrday,is_daylight_savings
+    my $tzname;
     my ($sec,$min,$hour,$mday,$month,$year)=('','',undef,'','','');
     if ($currentvalue) {
-	($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) = 
-	    localtime($currentvalue);
-	$year += 1900;
+        ($tzname,$sec,$min,$hour,$mday,$month,$year) = &get_timedates($currentvalue); 
     }
     unless ($wasdefined) {
+        ($tzname,$sec,$min,$hour,$mday,$month,$year) = &get_timedates($now);
 	if (($defhour) || ($defmin) || ($defsec)) {
-	    ($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) = 
-		localtime(time);
-	    $year += 1900;
 	    $sec=($defsec?$defsec:0);
 	    $min=($defmin?$defmin:0);
 	    $hour=($defhour?$defhour:0);
@@ -353,6 +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.$dname\_month.value;
@@ -413,6 +493,7 @@ document.$formname.$dname\_year.value,
         }
 
     }
+// ]]>
 </script>
 ENDJS
     $result .= '  <span style="white-space: nowrap;">';
@@ -424,23 +505,23 @@ ENDJS
     unshift(@Months,'If you can read this an error occurred');
     if ($includeempty) { $monthselector.="<option value=''></option>"; }
     for(my $m = 1;$m <=$#Months;$m++) {
-        $monthselector .= qq{      <option value="$m" };
-        $monthselector .= "selected " if ($m-1 eq $month);
-        $monthselector .= '> '.&mt($Months[$m]).' </option>';
+        $monthselector .= qq{      <option value="$m"};
+        $monthselector .= ' selected="selected"' if ($m-1 eq $month);
+        $monthselector .= '> '.&mt($Months[$m]).' </option>'."\n";
     }
     $monthselector.= '  </select>';
     # Day
     my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
     # Year
-    my $yearselector = qq{<input type="year" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
+    my $yearselector = qq{<input type="text" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
     #
     my $hourselector = qq{<select name="$dname\_hour" $special $state >};
     if ($includeempty) { 
         $hourselector.=qq{<option value=''></option>};
     }
     for (my $h = 0;$h<24;$h++) {
-        $hourselector .= qq{<option value="$h" };
-        $hourselector .= "selected " if (defined($hour) && $hour == $h);
+        $hourselector .= qq{<option value="$h"};
+        $hourselector .= ' selected="selected"' if (defined($hour) && $hour == $h);
         $hourselector .= ">";
         my $timest='';
         if ($h == 0) {
@@ -463,16 +544,19 @@ ENDJS
         $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
     }
     #
+    my $tzone = ' '.$tzname.' ';
     if ($no_hh_mm_ss) {
         $result .= &mt('[_1] [_2] [_3] ',
-                       $monthselector,$dayselector,$yearselector);
+                       $monthselector,$dayselector,$yearselector).
+                   $tzone;
         if (!$nolink) {
             $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
         }
     } else {
         $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s ',
                       $monthselector,$dayselector,$yearselector,
-                      $hourselector,$minuteselector,$secondselector);
+                      $hourselector,$minuteselector,$secondselector).
+                   $tzone;
         if (!$nolink) {
             $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
         }
@@ -481,6 +565,22 @@ ENDJS
     return $result;
 }
 
+sub get_timedates {
+    my ($epoch) = @_;
+    my $dt = DateTime->from_epoch(epoch => $epoch)
+                     ->set_time_zone(&Apache::lonlocal::gettimezone());
+    my $tzname = $dt->time_zone_short_name();
+    my $sec = $dt->second;
+    my $min = $dt->minute;
+    my $hour = $dt->hour;
+    my $mday = $dt->day;
+    my $month = $dt->month;
+    if ($month) {
+        $month --;
+    }
+    my $year = $dt->year;
+    return ($tzname,$sec,$min,$hour,$mday,$month,$year);
+}
 
 sub build_url {
     my ($base, $fields)=@_;
@@ -509,7 +609,7 @@ Inputs:
 
 =item $dname
 
-The name passed to &datesetter, which prefixes the form elements.
+The name passed to &date_setter, which prefixes the form elements.
 
 =item $defaulttime
 
@@ -562,20 +662,33 @@ sub get_date_from_form {
     if (defined($env{'form.'.$dname.'_month'})) {
         my $tmpmonth = $env{'form.'.$dname.'_month'};
         if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
-            $month = $tmpmonth - 1;
+            $month = $tmpmonth;
         }
     }
     if (defined($env{'form.'.$dname.'_year'})) {
         my $tmpyear = $env{'form.'.$dname.'_year'};
-        if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
-            $year = $tmpyear - 1900;
+        if (($tmpyear =~ /^\d+$/) && ($tmpyear >= 1970)) {
+            $year = $tmpyear;
         }
     }
-    if (($year<70) || ($year>137)) { return undef; }
+    if (($year<1970) || ($year>2037)) { return undef; }
     if (defined($sec) && defined($min)   && defined($hour) &&
-        defined($day) && defined($month) && defined($year) &&
-        eval('&timelocal($sec,$min,$hour,$day,$month,$year)')) {
-        return &timelocal($sec,$min,$hour,$day,$month,$year);
+        defined($day) && defined($month) && defined($year)) {
+        my $timezone = &Apache::lonlocal::gettimezone();
+        my $dt = DateTime->new( year   => $year,
+                                month  => $month,
+                                day    => $day,
+                                hour   => $hour,
+                                minute => $min,
+                                second => $sec,
+                                time_zone => $timezone,
+                              );
+        my $epoch_time  = $dt->epoch;
+        if ($epoch_time ne '') {
+            return $epoch_time;
+        } else {
+            return undef;
+        }
     } else {
         return undef;
     }
@@ -645,6 +758,8 @@ sub javascript_nothing {
 ##############################################
 ##############################################
 sub javascript_docopen {
+    my ($mimetype) = @_;
+    $mimetype ||= 'text/html';
     # safari does not understand document.open() and loads "text/html"
     my $nothing = "''";
     my $user_browser;
@@ -658,7 +773,7 @@ sub javascript_docopen {
     if ($user_browser eq 'safari' && $user_os =~ 'mac') {
         $nothing = "document.clear()";
     } else {
-	$nothing = "document.open('text/html','replace')";
+	$nothing = "document.open('$mimetype','replace')";
     }
     return $nothing;
 }
@@ -863,18 +978,21 @@ 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($r,'<script type="text/javascript">'.
+	&r_print($r,'<script type="text/javascript">'."\n".
+        '// <![CDATA['."\n".
         "var popwin;
          function openpopwin () {
          popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
         "popwin.document.writeln(\'".$start_page.
-              "<h4>$heading<\/h4>".
+              "<h4>".&mt("$heading")."<\/h4>".
               "<form action= \"\" name=\"popremain\" method=\"post\">".
               '<input type="text" size="'.$width.'" name="remaining" value="'.
 	      &mt('Starting').'" /><\\/form>'.$end_page.
               "\');".
         "popwin.document.close();}".
-        "\nwindow.setTimeout(openpopwin,0)</script>");
+        "\nwindow.setTimeout(openpopwin,0)\n".
+        '// ]]>'."\n".
+        '</script>');
 	$prog_state{'formname'}='popremain';
 	$prog_state{'inputname'}="remaining";
     } elsif ($type eq 'inline') {
@@ -887,8 +1005,7 @@ sub Create_PrgWin {
 	}
 	if (!$inputname) {
 	    $prog_state{'inputname'}=&get_uniq_name();
-	    &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
-		     '" size="'.$width.'" />');
+	    &r_print($r,&mt("$heading [_1]",' <input type="text" name="'.$prog_state{'inputname'}.'" size="'.$width.'" />'));
 	} else {
 	    $prog_state{'inputname'}=$inputname;
 	    
@@ -908,10 +1025,14 @@ sub Create_PrgWin {
 # update progress
 sub Update_PrgWin {
     my ($r,$prog_state,$displayString)=@_;
-    &r_print($r,'<script type="text/javascript">'.$$prog_state{'window'}.'.document.'.
+    &r_print($r,'<script type="text/javascript">'."\n".
+             '// <![CDATA['."\n".
+             $$prog_state{'window'}.'.document.'.
 	     $$prog_state{'formname'}.'.'.
 	     $$prog_state{'inputname'}.'.value="'.
-	     $displayString.'";</script>');
+	     $displayString.'";'."\n".
+             '// ]]>'."\n".
+             '</script>');
     $$prog_state{'laststart'}=&Time::HiRes::time();
 }
 
@@ -964,11 +1085,15 @@ sub Increment_PrgWin {
     if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
         $lasttime = '';
     }
-    &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
+    &r_print($r,'<script>'."\n".
+             '// <![CDATA['."\n".
+             $$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.'";'."\n".
+             '// ]]>'."\n".
+             '</script>');
     $$prog_state{'laststart'}=&Time::HiRes::time();
 }
 
@@ -976,7 +1101,11 @@ sub Increment_PrgWin {
 sub Close_PrgWin {
     my ($r,$prog_state)=@_;
     if ($$prog_state{'type'} eq 'popup') {
-	&r_print($r,'<script>popwin.close()</script>'."\n");
+	&r_print($r,'<script>'."\n".
+                 '// <![CDATA['."\n".
+                 'popwin.close()'."n".
+                 '// ]]>'."\n".
+                 '</script>'."\n");
     } elsif ($$prog_state{'type'} eq 'inline') {
 	&Update_PrgWin($r,$prog_state,&mt('Done'));
     }
@@ -1057,7 +1186,8 @@ sub spellheader {
 
     my $nothing=&javascript_nothing();
     return (<<ENDCHECK);
-<script type="text/javascript"> 
+<script type="text/javascript">
+// <![CDATA[
 //<!-- BEGIN LON-CAPA Internal
 var checkwin;
 
@@ -1068,6 +1198,7 @@ function spellcheckerwindow(string) {
     checkwin.document.close();
 }
 // END LON-CAPA Internal -->
+// ]]>
 </script>
 ENDCHECK
 }
@@ -1141,7 +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) {
 	$output.="
@@ -1154,7 +1286,9 @@ sub htmlareaselectactive {
     oFCKeditor.Config['DefaultLanguage'] = '$lang';
 }";
     }
-    $output.="\nwindow.status='Activated Editfields';\n</script><br />".
+    $output.="\nwindow.status='Activated Editfields';\n".
+             '// ]]>'."\n".
+             '</script><br />'.
 	&disablelink(@fields);
     return $output;
 }
@@ -1218,7 +1352,7 @@ returns: nothing
     my @Crumbs;
     
     sub breadcrumbs {
-        my ($component,$component_help,$menulink,$helplink,$css_class) = @_;
+        my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt) = @_;
         #
 	$css_class ||= 'LC_breadcrumbs';
         my $Str = "\n".'<table class="'.$css_class.'"><tr><td>';
@@ -1227,6 +1361,8 @@ returns: nothing
         my $faq = '';
         my $bug = '';
 	my $help='';
+	# Crumb Symbol
+	my $crumbsymbol = '&raquo;&nbsp;';
         # The last breadcrumb does not have a link, so handle it separately.
         my $last = pop(@Crumbs);
         #
@@ -1234,20 +1370,23 @@ returns: nothing
 	if (!defined($menulink)) { $menulink=1; }
         if ($menulink) {
             my $description = 'Menu';
+            my $no_mt_descr = 0;
             if (exists($env{'request.course.id'}) && 
                 $env{'request.course.id'} ne '') {
                 $description = 
                     $env{'course.'.$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,
                 });
         }
         my $links .= 
-            join('-&gt;',
+            join($crumbsymbol,
                  map {
                      $faq = $_->{'faq'} if (exists($_->{'faq'}));
                      $bug = $_->{'bug'} if (exists($_->{'bug'}));
@@ -1266,7 +1405,7 @@ returns: nothing
                      $result;
                      } @Crumbs
                  );
-        $links .= '-&gt;' if ($links ne '');
+        $links .= $crumbsymbol if ($links ne '');
 	if ($last->{'no_mt'}) {
 	    $links .= '<b>'.$last->{'text'}.'</b>';
 	} else {
@@ -1293,8 +1432,12 @@ returns: nothing
         $Str .= $links.'</td>';
         #
         if (defined($component)) {
-            $Str .= '<td class="'.$css_class.'_component">'.
-                &mt($component);
+            $Str .= '<td class="'.$css_class.'_component">';
+            if ($no_mt) {
+                $Str .= $component;
+            } else {
+                $Str .= &mt($component);
+            }
 	    if ($icons ne '') {
 		$Str .= '&nbsp;'.$icons;
 	    }
@@ -1333,7 +1476,7 @@ returns: nothing
 # row1
 # row2
 # row3   ... etc.
-# &submit_row(0
+# &submit_row()
 # &end_pick_box()
 #
 # where row1, row 2 etc. are chosen from &role_select_row,&course_select_row,
@@ -1375,6 +1518,9 @@ returns: nothing
 # routines, but can also be called directly to start and end rows which have 
 # needs that are not accommodated by the *_select_row() routines.    
 
+{ # Start: row_count block for pick_box
+my @row_count;
+
 sub start_pick_box {
     my ($css_class) = @_;
     if (defined($css_class)) {
@@ -1382,6 +1528,7 @@ sub start_pick_box {
     } else {
 	$css_class= 'class="LC_pick_box"';
     }
+    unshift(@row_count,0);
     my $output = <<"END";
  <table $css_class>
 END
@@ -1389,26 +1536,38 @@ END
 }
 
 sub end_pick_box {
+    shift(@row_count);
     my $output = <<"END";
        </table>
 END
     return $output;
 }
 
+sub row_headline {
+    my $output = <<"END";
+           <tr><td colspan="2">
+END
+    return $output;
+}
+
 sub row_title {
     my ($title,$css_title_class,$css_value_class) = @_;
+    $row_count[0]++;
+    my $css_class = ($row_count[0] % 2)?'LC_odd_row':'LC_even_row';
     $css_title_class ||= 'LC_pick_box_title';
     $css_title_class = 'class="'.$css_title_class.'"';
 
     $css_value_class ||= 'LC_pick_box_value';
-    $css_value_class = 'class="'.$css_value_class.'"';
 
+    if ($title ne '') {
+        $title .= ':';
+    }
     my $output = <<"ENDONE";
            <tr class="LC_pick_box_row">
             <td $css_title_class>
-	       $title:
+	       $title
             </td>
-            <td $css_value_class>
+            <td class="$css_value_class $css_class">
 ENDONE
     return $output;
 }
@@ -1430,6 +1589,9 @@ ENDTWO
     return $output;
 }
 
+} # End: row_count block for pick_box
+
+
 sub role_select_row {
     my ($roles,$title,$css_class,$show_separate_custom,$cdom,$cnum) = @_;
     my $output;
@@ -1437,7 +1599,7 @@ sub role_select_row {
         $output = &row_title($title,$css_class);
     }
     $output .= qq|
-                                  <select name="roles" multiple >\n|;
+                                  <select name="roles" multiple="multiple" >\n|;
     foreach my $role (@$roles) {
         my $plrole;
         if ($role eq 'ow') {
@@ -1482,6 +1644,7 @@ 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') {
@@ -1504,6 +1667,7 @@ sub course_selection {
             formname.courselist = '';
         }
     }
+// ]]>
 </script>
     |;
     my $courseform='<b>'.&Apache::loncommon::selectcourse_link
@@ -1564,7 +1728,7 @@ sub status_select_row {
         $output = &row_title($title,$css_class,'LC_pick_box_select');
     }
     $output .= qq|
-                                    <select name="types" multiple>\n|;
+                                    <select name="types" multiple="multiple">\n|;
     foreach my $status_type (sort(keys(%{$types}))) {
         $output .= '  <option value="'.$status_type.'">'.$$types{$status_type}.'</option>';
     }
@@ -1638,6 +1802,24 @@ sub course_custom_roles {
 
 ##############################################
 ##############################################
+
+# topic_bar
+#
+# Generates a div containing a numbered (static image) followed by a title
+# with a background color defined in the corresponding CSS: LC_topic_bar
+#
+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;'.$title.'
+</div>
+';
+}
+
+##############################################
+##############################################
                                                                              
 # echo_form_input
 #
@@ -1768,7 +1950,7 @@ sub set_form_elements {
             $values{$name}[$i] =~ s/([\r\n\f]+)/\\n/g;
             $values{$name}[$i] =~ s/"/\\"/g;
         }
-        if ($$elements{$name} eq 'text') {
+        if (($$elements{$name} eq 'text') || ($$elements{$name} eq 'hidden')) {
             my $numvalues = @{$values{$name}};
             if ($numvalues > 1) {
                 my $valuestring = join('","',@{$values{$name}});
@@ -1803,6 +1985,8 @@ sub set_form_elements {
                     $output .= qq|
       if (courseForm.elements['$name'].value == "$value") {
           courseForm.elements['$name'].checked = true;
+      } else {
+          courseForm.elements['$name'].checked = false;
       }|;
                 }
             }
@@ -1885,6 +2069,8 @@ END
     return $scripttag;
 }
 
+
+
 1;
 
 __END__