--- loncom/interface/lonmodifycourse.pm	2010/07/08 23:19:19	1.56
+++ loncom/interface/lonmodifycourse.pm	2010/08/24 13:51:52	1.57
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # handler for DC-only modifiable course settings
 #
-# $Id: lonmodifycourse.pm,v 1.56 2010/07/08 23:19:19 raeburn Exp $
+# $Id: lonmodifycourse.pm,v 1.57 2010/08/24 13:51:52 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -226,8 +226,9 @@ sub print_modification_menu {
         $categorytitle = 'View/Modify Course Settings';
         $setquota_text = &mt('Total disk space allocated for storage of portfolio files in all groups in a course.');
         $setparams_text = 'View/Modify course owner, institutional code, and default authentication';
-        $cat_text = 'View/Modify catalog settings for course'; 
+        $cat_text = 'View/Modify catalog settings for course';
     }
+    my $anon_text = 'Responder threshold required to display anonymous survey submissions';
 
     my %domconf = &Apache::lonnet::get_dom('configuration',['coursecategories'],$dom);
     my @additional_params = &catalog_settable($domconf{'coursecategories'},$type);
@@ -256,6 +257,14 @@ sub print_modification_menu {
                 linktitle => ''
             },
             {
+                linktext => 'View/Modify responders threshold for anonymous survey submissions display',
+                url => &phaseurl('setanon'),
+                permission => 1,
+                #help => '',
+                icon => 'anonsurveythreshold.png',
+                linktitle => ''
+            },
+            {
                 linktext => $cat_text,
                 url => &phaseurl('catsettings'),
                 permission => (@additional_params > 0),
@@ -292,7 +301,8 @@ sub print_modification_menu {
         $menu_html .=  '<li>'.&mt('Course owner (permitted to assign Course Coordinator roles in the course).').'</li>'.
                        '<li>'.&mt("Institutional code and default authentication (both required for auto-enrollment of students from institutional datafeeds).").'</li>';
     }
-    $menu_html .= '<li>'.$setquota_text.'</li>'."\n";
+    $menu_html .= '<li>'.$setquota_text.'</li>'.
+                  '<li>'.$anon_text.'</li>'."\n";
     foreach my $item (@additional_params) {
         if ($type eq 'Community') {
             if ($item eq 'togglecats') {
@@ -409,11 +419,11 @@ sub print_setquota {
     my $hidden_elements = &hidden_form_elements();
     my $helpitem = &Apache::loncommon::help_open_topic('Modify_Course_Quota');
     $r->print(<<ENDDOCUMENT);
-<form action="/adm/modifycourse" method="post" name="setquota">
+<form action="/adm/modifycourse" method="post" name="setquota" onsubmit="return verify_quota();">
 <h3>$lt{'cquo'} <span class="LC_nobreak">$cdesc</span></h3>
 <p>
 $helpitem $lt{'gpqu'}: <input type="text" size="4" name="coursequota" value="$coursequota" /> Mb &nbsp;&nbsp;&nbsp;&nbsp;
-<input type="button" onClick="javascript:verify_quota(this.form)" value="$lt{'modi'}" />
+<input type="submit" value="$lt{'modi'}" />
 </p>
 $hidden_elements
 <a href="javascript:changePage(document.setquota,'menu')">$lt{'back'}</a>
@@ -422,6 +432,45 @@ ENDDOCUMENT
     return;
 }
 
+sub print_set_anonsurvey_threshold {
+    my ($r,$cdom,$cnum,$cdesc,$type) = @_;
+    my %lt = &Apache::lonlocal::texthash(
+                'resp' => 'Responder threshold for anonymous survey submissions display:',
+                'sufa' => 'Anonymous survey submissions displayed when responders exceeds',
+                'modi' => 'Save',
+                'back' => 'Pick another action',
+    );
+    my %settings = &Apache::lonnet::get('environment',['internal.anonsurvey_threshold'],$cdom,$cnum);
+    my $threshold = $settings{'internal.anonsurvey_threshold'};
+    if ($threshold eq '') {
+        my %domconfig = 
+            &Apache::lonnet::get_dom('configuration',['coursedefaults'],$cdom);
+        if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
+            $threshold = $domconfig{'coursedefaults'}{'anonsurvey_threshold'};
+            if ($threshold eq '') {
+                $threshold = 10;
+            }
+        } else {
+            $threshold = 10;
+        }
+    }
+    &print_header($r,$type);
+    my $hidden_elements = &hidden_form_elements();
+    my $helpitem = &Apache::loncommon::help_open_topic('Modify_Anonsurvey_Threshold');
+    $r->print(<<ENDDOCUMENT);
+<form action="/adm/modifycourse" method="post" name="setanon" onsubmit="return verify_anon_threshold();">
+<h3>$lt{'resp'} <span class="LC_nobreak">$cdesc</span></h3>
+<p>
+$helpitem $lt{'sufa'}: <input type="text" size="4" name="threshold" value="$threshold" /> &nbsp;&nbsp;&nbsp;&nbsp;
+<input type="submit" value="$lt{'modi'}" />
+</p>
+$hidden_elements
+<a href="javascript:changePage(document.setanon,'menu')">$lt{'back'}</a>
+</form>
+ENDDOCUMENT
+    return;
+}
+
 sub print_catsettings {
     my ($r,$cdom,$cnum,$cdesc,$type) = @_;
     &print_header($r,$type);
@@ -1067,7 +1116,7 @@ sub modify_quota {
                 } else {
                     if ($putreply eq 'ok') {
                         my %updatedsettings = &Apache::lonnet::get('environment',['internal.coursequota'],$cdom,$cnum);
-                        $r->print(&mt('The disk space allocated for group portfolio files is now: [_1] Mb.',$updatedsettings{'internal.coursequota'}));
+                        $r->print(&mt('The disk space allocated for group portfolio files is now: [_1] Mb.','<b>'.$updatedsettings{'internal.coursequota'}.'</b>'));
                         my $usage = &Apache::longroup::sum_quotas($cdom.'_'.$cnum);
                         if ($usage >= $updatedsettings{'internal.coursequota'}) {
                             my $newoverquota;
@@ -1101,6 +1150,62 @@ sub modify_quota {
     return;
 }
 
+sub modify_anonsurvey_threshold {
+    my ($r,$cdom,$cnum,$cdesc,$domdesc,$type) = @_;
+    &print_header($r,$type);
+    $r->print('<form action="/adm/modifycourse" method="post" name="processthreshold">'."\n".
+              '<h3>'.&mt('Responder threshold required for display of anonymous survey submissions:').
+              ' <span class="LC_nobreak">'.$cdesc.'</span></h3><br />');
+    my %oldsettings = &Apache::lonnet::get('environment',['internal.anonsurvey_threshold'],$cdom,$cnum);
+    my %domconfig =
+        &Apache::lonnet::get_dom('configuration',['coursedefaults'],$cdom);
+    my $defaultthreshold; 
+    if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
+        $defaultthreshold = $domconfig{'coursedefaults'}{'anonsurvey_threshold'};
+        if ($defaultthreshold eq '') {
+            $defaultthreshold = 10;
+        }
+    } else {
+        $defaultthreshold = 10;
+    }
+    if ($env{'form.threshold'} eq '') {
+        $r->print(&mt('The proposed responder threshold for display of anonymous survey submissions was blank, so the threshold is unchanged.'));
+    } else {
+        my $newthreshold = $env{'form.threshold'};
+        if ($newthreshold =~ /^\s*(\d+)\s*$/) {
+            $newthreshold = $1;
+            if ($oldsettings{'internal.anonsurvey_threshold'} eq $env{'form.threshold'}) {
+                $r->print(&mt('Responder threshold for anonymous survey submissions display remains unchanged: [_1].',$env{'form.threshold'}));
+            } else {
+                my %cenv = (
+                           'internal.anonsurvey_threshold' => $env{'form.threshold'},
+                           );
+                my $putreply = &Apache::lonnet::put('environment',\%cenv,$cdom,
+                                                    $cnum);
+                if (($oldsettings{'internal.anonsurvey_threshold'} eq '') &&
+                    ($env{'form.threshold'} == $defaultthreshold)) {
+                    $r->print(&mt('The responder threshold for display of anonymous survey submissions is the default for this domain: [_1].',$defaultthreshold));
+                } else {
+                    if ($putreply eq 'ok') {
+                        my %updatedsettings = &Apache::lonnet::get('environment',['internal.anonsurvey_threshold'],$cdom,$cnum);
+                        $r->print(&mt('The responder threshold for display of anonymous survey submissions is now: [_1].','<b>'.$updatedsettings{'internal.anonsurvey_threshold'}.'</b>'));
+                    } else {
+                        $r->print(&mt('An error occurred storing the responder threshold for anonymous submissions display: ').
+                                  $putreply);
+                    }
+                }
+            }
+        } else {
+            $r->print(&mt('The proposed responder threshold for display of anonymous submissions contained invalid characters, so the threshold is unchanged.'));
+        }
+    }
+    $r->print('<p>'.
+              '<a href="javascript:changePage(document.processthreshold,'."'menu'".')">'.
+              &mt('Pick another action').'</a>');
+    $r->print(&hidden_form_elements().'</form>');
+    return;
+}
+
 sub modify_catsettings {
     my ($r,$cdom,$cnum,$cdesc,$domdesc,$type) = @_;
     &print_header($r,$type);
@@ -1264,17 +1369,45 @@ function gochoose(cname,cdom,cdesc) {
 </script>
 |;
     } elsif ($phase eq 'setquota') {
-        $js .= <<'ENDSCRIPT';
+        my $invalid = &mt('The quota you entered contained invalid characters.');
+        my $alert = &mt('You must enter a number');
+        my $regexp = '/^\s*(\d+\.?\d*|\.\d+)\s*$/';
+        $js .= <<"ENDSCRIPT";
 <script type="text/javascript">
-function verify_quota(formname) {
-    var newquota = formname.coursequota.value; 
-    var num_reg = /^\s*(\d+\.?\d*|\.\d+)\s*$/;
+function verify_quota() {
+    var newquota = document.setquota.coursequota.value; 
+    var num_reg = $regexp;
     if (num_reg.test(newquota)) {
-        changePage(formname,'processquota');
+        changePage(document.setquota,'processquota');
     } else {
-        alert("The quota you entered contained invalid characters.\nYou must enter a number");
+        alert("$invalid\\n$alert");
+        return false;
     }
-    return;
+    return true;
+}
+</script>
+ENDSCRIPT
+    } elsif ($phase eq 'setanon') {
+        my $invalid = &mt('The responder threshold you entered is invalid.');
+        my $alert = &mt('You must enter a positive integer.');
+        my $regexp = ' /^\s*\d+\s*$/';
+        $js .= <<"ENDSCRIPT";
+<script type="text/javascript">
+function verify_anon_threshold() {
+    var newthreshold = document.setanon.threshold.value;
+    var num_reg = $regexp;
+    if (num_reg.test(newthreshold)) {
+        if (newthreshold > 0) {
+            changePage(document.setanon,'processthreshold');
+        } else {
+            alert("$invalid\\n$alert");
+            return false;
+        }
+    } else {
+        alert("$invalid\\n$alert");
+        return false;
+    }
+    return true;
 }
 </script>
 ENDSCRIPT
@@ -1371,7 +1504,8 @@ sub hidden_form_elements {
     my $hidden_elements = 
       &Apache::lonhtmlcommon::echo_form_input(['gosearch','updater','coursecode',
           'prevphase','numlocalcc','courseowner','login','coursequota','intarg',
-          'locarg','krbarg','krbver','counter','hidefromcat','usecategory'])."\n".
+          'locarg','krbarg','krbver','counter','hidefromcat','usecategory',
+          'threshold'])."\n".
           '<input type="hidden" name="prevphase" value="'.$env{'form.phase'}.'" />';
     return $hidden_elements;
 }
@@ -1459,7 +1593,21 @@ sub handler {
                             ({href=>"javascript:changePage(document.$phase,'$phase')",
                               text=>"Result"});
                             &modify_quota($r,$cdom,$cnum,$cdesc,$domdesc,$type);
-                        } elsif ($phase eq 'viewparms') {  
+                        } elsif ($phase eq 'setanon') {
+                            &Apache::lonhtmlcommon::add_breadcrumb
+                            ({href=>"javascript:changePage(document.$phase,'$phase')",
+                              text=>"Threshold for anonymous submissions display"});
+                            &print_set_anonsurvey_threshold($r,$cdom,$cnum,$cdesc,$type);
+
+                        } elsif ($phase eq 'processthreshold') {
+                            &Apache::lonhtmlcommon::add_breadcrumb
+                            ({href=>"javascript:changePage(document.$phase,'setanon')",
+                              text=>"Threshold for anonymous submissions display"});
+                            &Apache::lonhtmlcommon::add_breadcrumb
+                            ({href=>"javascript:changePage(document.$phase,'$phase')",
+                              text=>"Result"});
+                            &modify_anonsurvey_threshold($r,$cdom,$cnum,$cdesc,$domdesc,$type);
+                        } elsif ($phase eq 'viewparms') {
                             &Apache::lonhtmlcommon::add_breadcrumb
                             ({href=>"javascript:changePage(document.$phase,'viewparms')",
                               text=>"Display settings"});