--- loncom/interface/Attic/lonspreadsheet.pm	2002/06/08 15:27:06	1.91
+++ loncom/interface/Attic/lonspreadsheet.pm	2002/07/05 01:31:25	1.95
@@ -1,5 +1,5 @@
 #
-# $Id: lonspreadsheet.pm,v 1.91 2002/06/08 15:27:06 matthew Exp $
+# $Id: lonspreadsheet.pm,v 1.95 2002/07/05 01:31:25 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -106,6 +106,13 @@ my %courseopt;
 my %useropt;
 my %parmhash;
 
+#
+# Some hashes for stats on timing and performance
+#
+
+my %starttimes;
+my %usedtimes;
+
 # Stuff that only the screen handler can know
 
 my $includedir;
@@ -165,6 +172,10 @@ $cfn='';
 
 $usymb='';
 
+# error messages
+
+$errormsg='';
+
 sub mask {
     my ($lower,$upper)=@_;
 
@@ -820,28 +831,29 @@ sub sett {
 }
 
 sub calc {
-    %v=();
+    undef %v;
     &sett();
     my $notfinished=1;
     my $depth=0;
+    my $errormsg;
     while ($notfinished) {
 	$notfinished=0;
         foreach (keys(%t)) {
             my $old=$v{$_};
             $v{$_}=eval($t{$_});
 	    if ($@) {
-		%v=();
-                return $@;
+		$v{$_}='"error"';
+                $errormsg.=$_.': '.$@."\n";
             }
 	    if ($v{$_} ne $old) { $notfinished=1; }
         }
         $depth++;
         if ($depth>100) {
-	    %v=();
+	    undef %v;
             return 'Maximum calculation depth exceeded';
         }
     }
-    return '';
+    return $errormsg;
 }
 
 sub templaterow {
@@ -863,9 +875,11 @@ sub outrowassess {
     my @cols=();
     if ($n) {
        my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{'A'.$n});
+      if ($rl{$usy}) {
        $cols[0]=$rl{$usy}.'<br>'.
                 '<select name="sel_'.$n.'" onChange="changesheet('.$n.
                 ')"><option name="default">Default</option>';
+      } else { $cols[0]=''; }
        foreach (@os) {
            $cols[0].='<option name="'.$_.'"';
             if ($ufn eq $_) {
@@ -954,7 +968,7 @@ sub setrowlabels {
 
 sub calcsheet {
     my $safeeval=shift;
-    $safeeval->reval('&calc();');
+    return $safeeval->reval('&calc();');
 }
 
 # ------------------------------------------------------------------ Get values
@@ -1466,6 +1480,7 @@ sub tmpread {
     $fn=$tmpdir.$fn.'.tmp';
     my $fh;
     my %fo=();
+    my $countrows=0;
     if ($fh=Apache::File->new($fn)) {
         my $name;
         while ($name=<$fh>) {
@@ -1473,6 +1488,11 @@ sub tmpread {
             my $value=<$fh>;
             chomp($value);
             $fo{$name}=$value;
+            if ($name=~/^A(\d+)$/) {
+		if ($1>$countrows) {
+		    $countrows=$1;
+                }
+            }
         }
     }
     if ($nform eq 'changesheet') {
@@ -1480,6 +1500,14 @@ sub tmpread {
         unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
 	    $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
         }
+    } elsif ($nfield eq 'insertrow') {
+        $countrows++;
+        my $newrow=substr('000000'.$countrows,-7);
+        if ($nform eq 'top') {
+	    $fo{'A'.$countrows}='--- '.$newrow;
+        } else {
+            $fo{'A'.$countrows}='~~~ '.$newrow;
+        }
     } else {
        if ($nfield) { $fo{$nfield}=$nform; }
     }
@@ -2452,6 +2480,12 @@ $tmpdir=$r->dir_config('lonDaemons').'/t
         document.sheet.submit();
     }
 
+    function insertrow(cn) {
+	document.sheet.unewfield.value='insertrow';
+        document.sheet.unewformula.value=cn;
+        document.sheet.submit();
+    }
+
 </script>
 ENDSCRIPT
     $r->print('</head><body bgcolor="#FFFFFF">'.
@@ -2675,6 +2709,17 @@ ENDSCRIPT
        if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
        $r->print('>');
     }
+
+# ------------------------------------------------------------------ Insertrows
+
+   $r->print(<<ENDINSERTBUTTONS);
+<br>
+<input type='button' onClick='insertrow("top");' 
+value='Insert Row Top'>
+<input type='button' onClick='insertrow("bottom");' 
+value='Insert Row Bottom'><br>
+ENDINSERTBUTTONS
+
 # ------------------------------------------------------------- Print out sheet
 
     &outsheet($r,$asheet);
