--- loncom/homework/structuretags.pm	2006/11/20 11:52:10	1.369
+++ loncom/homework/structuretags.pm	2007/02/24 01:44:14	1.374
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.369 2006/11/20 11:52:10 foxr Exp $
+# $Id: structuretags.pm,v 1.374 2007/02/24 01:44:14 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -88,6 +88,14 @@ sub page_start {
 					   $parstack,$parser,$safeeval);
     }
 
+    $extra_head.= '
+<script type="text/javascript">
+function setSubmittedPart (part) {
+   this.document.lonhomework.submitted.value="part_"+part;
+}
+</script>
+';
+
     my %body_args;
     if (defined($found{'html'})) {
 	$body_args{'skip_phases'}{'head'}=1;
@@ -213,7 +221,8 @@ sub setup_rndseed {
 	    }
 	    $env{'form.rndseed'}=$rndseed;
 	}
-	if ($env{'form.resetdata'} eq &mt('New Problem Variation') ||
+	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
+	      && $env{'form.submitted'} eq 'yes')  ||
 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
 	    srand(time);
 	    $rndseed=int(rand(2100000000));
@@ -276,9 +285,7 @@ sub option {
 sub problem_web_to_edit_header {
     my ($rndseed)=@_;
     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
-    if (!$Apache::lonhomework::parsing_a_task) {
-	$result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
-    }
+    $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
     $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
              <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
              <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
@@ -293,9 +300,9 @@ sub problem_web_to_edit_header {
 	: &mt('&nbsp;Show&nbsp;All&nbsp;Foils');
 
     if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
-    $result.= ' />'.$show_all_foils_text.
+    $result.= ' />'.$show_all_foils_text.'</label>'.
 	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
-	'</label><hr />';
+	'<hr />';
     if (!$Apache::lonhomework::parsing_a_task) {
 	$result.="
 <nobr>
@@ -360,7 +367,8 @@ sub initialize_storage {
 	
 	my $namespace = $symb || $env{'request.uri'};
 	if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
-	    $env{'form.resetdata'} eq &mt('New Problem Variation') ||
+	    ($env{'form.resetdata'} eq &mt('New Problem Variation')
+	     && $env{'form.submitted'} eq 'yes') ||
 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
 	    &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
 	    &Apache::lonxml::debug("Attempt reset");
@@ -787,7 +795,6 @@ sub end_problem {
     }
 
     if ($target eq 'tex') {
-
 	# Figure out the front matter and replace the
 	# INSERTTEXFRONTMATTERHERE in result with it.  note that we do
 	# this in end_problem because whether or not we display due
@@ -963,7 +970,7 @@ sub end_problem {
 sub start_library {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my ($result,$form_tag_start);
-    if ($$tagstack[0] eq 'library') {
+    if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
 	&init_problem_globals('library');
 	$Apache::lonhomework::type='problem';
     }
@@ -978,7 +985,7 @@ sub start_library {
 	$result=$token->[4];
 	$result.=&Apache::edit::handle_insert();
     } elsif (($target eq 'web' || $target eq 'webgrade')
-	     && $$tagstack[0] eq 'library' 
+	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
 	     && $env{'request.state'} eq "construct" ) {
 	my $name=&get_resource_name($parstack,$safeeval);
 	($result,$form_tag_start)=
@@ -997,11 +1004,14 @@ sub end_library {
     my $result='';
     if ($target eq 'edit') {
 	$result=&problem_edit_footer();
-    } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
-	     $env{'request.state'} eq "construct") {
+    } elsif ($target eq 'web' 
+	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
+	     && $env{'request.state'} eq "construct") {
 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
     }
-    if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
+    if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
+	&reset_problem_globals('library');
+    }
     return $result;
 }
 
@@ -1490,10 +1500,14 @@ sub end_preduedate {
 # tags if the conditions are not right to display it.
 sub start_postanswerdate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
+	&Apache::lonnet::allowed('pav',
+			   $env{'request.course.id'}.'/'.$env{'request.course.sec'});
     if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
-	$target eq 'tex') {
+	$target eq 'tex' ) {
 	if ($Apache::lonhomework::scantronmode ||
-	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
+	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
+	    (($target eq 'tex') && !$pav)) {
 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
 	}
     }