--- loncom/interface/coursecatalog.pm	2009/11/23 21:45:18	1.57
+++ loncom/interface/coursecatalog.pm	2010/08/14 02:00:27	1.58.4.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler for displaying the course catalog interface
 #
-# $Id: coursecatalog.pm,v 1.57 2009/11/23 21:45:18 raeburn Exp $
+# $Id: coursecatalog.pm,v 1.58.4.2 2010/08/14 02:00:27 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -87,8 +87,13 @@ sub handler {
     }
     &Apache::loncommon::extract_categories($cathash,\@cats,\@trails,\%allitems,
                                            \%idx,\@jsarray,$subcats);
+    my ($numtitles,@codetitles);
     if ($env{'form.coursenum'} ne '' && &user_is_known()) {
-        &course_details($r,$codedom,$formname,$domdesc,\@trails,\%allitems);
+        if ($env{'form.currcat_0'} eq 'instcode::0') {
+            $numtitles = &instcode_course_selector($r,$codedom,$formname,$domdesc,
+                                                   undef,undef,\@codetitles);
+        }
+        &course_details($r,$codedom,$formname,$domdesc,\@trails,\%allitems,\@codetitles);
     } else {
         my ($catlinks,$has_subcats,$selitem) = &category_breadcrumbs($codedom,@cats);
         my $catjs = <<"ENDSCRIPT";
@@ -114,12 +119,12 @@ function setCourseId(caller) {
 
 ENDSCRIPT
         $catjs .= &courselink_javascript(); 
-        my $numtitles;
         if ($env{'form.currcat_0'} eq 'instcode::0') {
             $numtitles = &instcode_course_selector($r,$codedom,$formname,$domdesc,
-                                                   $catlinks,$catjs);
+                                                   $catlinks,$catjs,\@codetitles);
             if ($env{'form.state'} eq 'listing') {
-                $r->print(&print_course_listing($codedom,$numtitles));
+                $r->print(&print_course_listing($codedom,$numtitles,undef,undef,undef,
+                                                \@codetitles));
             }
         } else {
             my (%add_entries);
@@ -164,7 +169,7 @@ ENDJS
                           $display_button.'" /></form><br /><br />');
             }
             if ($env{'form.state'} eq 'listing') {
-                $r->print(&print_course_listing($codedom,undef,\@trails,\%allitems,$subcats));
+                $r->print(&print_course_listing($codedom,undef,\@trails,\%allitems,$subcats,\@codetitles));
             }
         }
     }
@@ -173,7 +178,7 @@ ENDJS
 }
 
 sub course_details {
-    my ($r,$codedom,$formname,$domdesc,$trails,$allitems) = @_;
+    my ($r,$codedom,$formname,$domdesc,$trails,$allitems,$codetitles) = @_;
     my $output;
     my %add_entries = (topmargin    => "0",
                        marginheight => "0",);
@@ -190,17 +195,33 @@ sub course_details {
                 ({href=>"/adm/coursecatalog",
                   text=>"Course/Community Catalog"});
     }
+    my $brtextone = 'Course listing'; 
+    my $brtexttwo = 'Course details';
+    if ($env{'form.currcat_0'} eq 'communities::0') {
+        $brtextone = 'Community listing';
+        $brtexttwo = 'Community details';
+    }
     &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:document.$formname.submit()",
-              text=>"Course listing"},
-             {text=>"Course details"});
-    $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course/Community Catalog'));
-    $r->print('<br />'.&mt('Detailed course information:').'<br /><br />'.
-              &print_course_listing($codedom,undef,$trails,$allitems).
+              text=>$brtextone},
+             {text=>$brtexttwo});
+    $r->print('<br />');
+    if ($env{'form.currcat_0'} eq 'communities::0') {
+        $r->print(&mt('Detailed community information:'));
+    } else {
+        $r->print(&mt('Detailed course information:'));
+    }
+    $r->print('<br /><br />'.
+              &print_course_listing($codedom,undef,$trails,$allitems,undef,$codetitles).
               '<br /><br />');
     $r->print('<form name="'.$formname.'" method="post" action="/adm/coursecatalog">'.
-              '<a href = "javascript:document.coursecatalog.submit()">'.
-              &mt('Back to course listing').'</a>'.
+              '<a href = "javascript:document.coursecatalog.submit()">');
+    if ($env{'form.currcat_0'} eq 'communities::0') {
+        $r->print(&mt('Back to community listing'));
+    } else {
+        $r->print(&mt('Back to course listing'));
+    }
+    $r->print('</a>'.
               &Apache::lonhtmlcommon::echo_form_input(['coursenum','catalogfilter',
                                                        'showdetails','courseid']).'</form>');
     return;
@@ -233,10 +254,9 @@ END
 }
 
 sub instcode_course_selector {
-    my ($r,$codedom,$formname,$domdesc,$catlinks,$catjs) = @_;
+    my ($r,$codedom,$formname,$domdesc,$catlinks,$catjs,$codetitles) = @_;
     my %coursecodes = ();
     my %codes = ();
-    my @codetitles = ();
     my %cat_titles = ();
     my %cat_order = ();
     my %cat_items;
@@ -246,7 +266,7 @@ sub instcode_course_selector {
                        marginheight => "0",);
     my ($jscript,$totcodes,$numtitles,$lasttitle) = 
         &Apache::courseclassifier::instcode_selectors_data($codedom,$formname,
-                           \%cat_items,\@codetitles,\%cat_titles,\%cat_order);
+                           \%cat_items,$codetitles,\%cat_titles,\%cat_order);
     my $js = '<script type"text/javascript">'."\n$jscript\n$catjs\n".
               '</script>';
     if ($totcodes) {
@@ -263,7 +283,7 @@ sub instcode_course_selector {
         if ($numtitles > 0) {
             $r->print('<b>'.&mt('Choose which course(s) to list.').'</b><br />'.
                       &Apache::courseclassifier::build_instcode_selectors($numtitles,
-                       $lasttitle,\%cat_items,\@codetitles,\%cat_titles,\%cat_order));
+                       $lasttitle,\%cat_items,$codetitles,\%cat_titles,\%cat_order));
         }
         $r->print('<input type="hidden" name="coursenum" value="" />'."\n".
                   '<input type="hidden" name="sortby" value="" />'."\n".
@@ -294,15 +314,19 @@ sub cat_header {
                                          'add_entries' => $add_entries,
                                          'no_inline_link'   => 1,});
     $r->print($start_page);
+    my $brtext = 'Course listing';
+    if ($env{'form.currcat_0'} eq 'communities::0') {
+        $brtext = 'Community listing';
+    }
     if ($env{'form.state'} eq 'listing') {
         if ($numtitles > 0) {
             &Apache::lonhtmlcommon::add_breadcrumb
                 ({href=>"/adm/coursecatalog",
                   text=>"Course/Community Catalog"},
-                 {text=>"Course listing"});
+                 {text=>$brtext});
         } else {
             &Apache::lonhtmlcommon::add_breadcrumb
-            ({text=>"Course listing"});
+            ({text=>$brtext});
         }
     } else {
         &Apache::lonhtmlcommon::add_breadcrumb
@@ -334,78 +358,68 @@ sub category_breadcrumbs {
     my $currcat_str = 
         '<input type="hidden" name="catalog_maxdepth" value="'.$deeper.'" />'.
         '<input type="hidden" name="showdom" value="'.$dom.'" />';
-    my $catlinks = '<td valign="top"><b>'.&mt('Catalog:').'</b></td><td><table><tr>';
+    my $catlinks = '<td valign="top"><b>'.&mt('Catalog:').'</b></td><td><table><tr><td>';
     my $has_subcats;
     my $selitem;
-    for (my $i=0; $i<$deeper; $i++) {
-        $currcat_str .= '<input type="hidden" name="currcat_'.$i.'" value="'.$env{'form.currcat_'.$i}.'" />';
-        my ($cattitle,$shallower);
-        if ($i == 0) {
-            if (ref($cats[0]) eq 'ARRAY') {
-                if (@{$cats[0]} > 1) {
-                    $cattitle = &mt('Main Categories');
-                }
+    if (ref($cats[0]) eq 'ARRAY') {
+        if (@{$cats[0]} == 0) {
+            $catlinks .= &mt('No categories defined in this domain'); 
+        } elsif (@{$cats[0]} == 1) {
+            if ($cats[0][0] eq 'instcode') {
+                $catlinks .= &mt('Official courses (with institutional codes)');
+                $env{'form.currcat_0'} = 'instcode::0';
+            } elsif ($cats[0][0] eq 'communities') {
+                $catlinks .= &mt('Communities');
+                $env{'form.currcat_0'} = 'communities::0';
+            } else {
+                my $name = $cats[0][0];
+                my $item = &escape($name).'::0';
+                $catlinks .= $name;
+                $env{'form.currcat_0'} = $item;
+            }
+            $currcat_str .= '<input type="hidden" name="currcat_0" value="'.$env{'form.currcat_0'}.'" />';
+        } else {
+            $catlinks .= &main_category_selector(@cats);
+            if (($env{'form.currcat_0'} ne '') && 
+                ($env{'form.currcat_0'} ne 'instcode::0')) {
+                $catlinks .= $crumbsymbol;
+            } else {
+                $catlinks .= '</td>';
             }
-        } else {
-            $shallower = $i-1;
-            my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$env{'form.currcat_'.$shallower});
-            $cattitle = $cat;
-        }
-        if ($cattitle ne '') {
-            $catlinks .= '<td valign="top"><a href="javascript:setCatDepth('."'$shallower'".')">'.$cattitle.'</a>'.$crumbsymbol.'</td>';
         }
+    } else {
+        $catlinks .= &mt('Official courses (with institutional codes)');
+                     $env{'form.currcat_0'} = 'instcode::0';
+         $currcat_str .= '<input type="hidden" name="currcat_0" value="'.$env{'form.currcat_0'}.'" />';
     }
-    if ($deeper == 0) {
-        $catlinks .= '<td>';
-        if (ref($cats[0]) eq 'ARRAY') {
-            if ((@{$cats[0]} == 1) && (@cats == 1)) {
-                if ($cats[0][0] eq 'instcode') {
-                    $catlinks .= &mt('Official courses (with institutional codes)').
-                                 '<input type="hidden" name="currcat_0" value="instcode::0" />';
-                    $env{'form.currcat_0'} = 'instcode::0';
-                } elsif ($cats[0][0] eq 'communities') {
-                    $catlinks .= &mt('Communities').
-                                 '<input type="hidden" name="currcat_0" value="instcode::0" />';
-                    $env{'form.currcat_0'} = 'communities::0';
-                } else {
-                    my $name = $cats[0][0];
-                    my $item = &escape($name).'::0';
-                    $catlinks .= $name.
-                             '<input type="hidden" name="currcat_0" value="'.$item.'" />';
-                    $env{'form.currcat_0'} = $item;
-                }
-            } else {
-                $has_subcats = 1;
-                my $buttontext = &mt('Show subcategories');
-                $selitem = 'currcat_0';
-                $catlinks .= '<select name="'.$selitem.'">'."\n";
-                if (@{$cats[0]} > 1) {
-                    $catlinks .= '<option value="" selected="selected">'.&mt('Select').'</option>'."\n";
-                    $buttontext = &mt('Pick main category');
-                }
-                for (my $i=0; $i<@{$cats[0]}; $i++) {
-                    my $name = $cats[0][$i];
-                    my $item = &escape($name).'::0';
-                    $catlinks .= '<option value="'.$item.'">';
-                    if ($name eq 'instcode') {
-                        $catlinks .= &mt('Official courses (with institutional codes)');
-                    } elsif ($name eq 'communities') {
-                        $catlinks .= &mt('Communities');
-                    } else {
-                        $catlinks .= $name;
+    if ($deeper) {
+        for (my $i=1; $i<=$deeper; $i++) {
+            my $shallower = $i-1;
+            next if ($shallower == 0);
+            my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$env{'form.currcat_'.$shallower});
+            if ($cat ne '') {
+                $catlinks .= '<td valign="top">'.
+                             '<select name="currcat_'.$shallower.'" onchange="'.
+                             'setCatDepth('."'$shallower'".');this.form.submit();">';
+                if (ref($cats[$shallower]{$container}) eq 'ARRAY') {
+                    $catlinks .= '<option value="">'.&mt('De-select').'</option>';
+                    for (my $j=0; $j<@{$cats[$shallower]{$container}}; $j++) {
+                        my $name = $cats[$shallower]{$container}[$j];
+                        my $item = &escape($name).':'.$container.':'.$shallower;
+                        my $selected = '';
+                        if ($item eq $env{'form.currcat_'.$shallower}) {
+                            $selected = ' selected="selected"';
+                        }
+                        $catlinks .= 
+                           '<option value="'.$item.'"'.$selected.'>'.$name.'</option>';
                     }
-                    $catlinks .= '</option>'."\n";
                 }
-                $catlinks .= '</select>'."\n".
-                             '&nbsp;<input type="submit" name="gocats" value="'.
-                             $buttontext.'" />';
+                $catlinks .= '</select>';
             }
-        } else {
-            $catlinks .= &mt('Official courses (with institutional codes)').
-                         '<input type="hidden" name="currcat_0" value="instcode::0" />';
-            $env{'form.currcat_0'} = 'instcode::0';
+            unless ($i == $deeper) {
+                $catlinks .= $crumbsymbol;
+            } 
         }
-    } else {
         my ($cat,$container,$depth);
         if ($env{'form.currcat_'.$currdepth} eq '') {
             my $shallower = $currdepth - 1;
@@ -413,40 +427,66 @@ sub category_breadcrumbs {
         } else {
             ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$env{'form.currcat_'.$currdepth});
         }
-        my $deeper = $depth +1;
-        my $currcat = $cat;
-        if ($cat eq 'instcode') {
-            $currcat = &mt('Official courses (with institutional codes)');
-        } elsif ($cat eq 'communities') {
-            $currcat = &mt('Communities');
-        }
-        $catlinks .= '<td><b>'.$currcat.'</b>';
-        if (ref($cats[$deeper]{$cat}) eq 'ARRAY') {
+        my $deeperlevel = $depth +1;
+        if (ref($cats[$deeperlevel]{$cat}) eq 'ARRAY') {
             $has_subcats = 1;
             my $buttontext = &mt('Show subcategories');
-            $selitem = 'currcat_'.$deeper;
-            $catlinks .= ':&nbsp;<select name="'.$selitem.'">';
-            if (@{$cats[$deeper]{$cat}} > 1) {
+            my $selitem = 'currcat_'.$deeperlevel;
+            $catlinks .= '&nbsp;<select name="'.$selitem.'" onchange="this.form.submit()">';
+            if (@{$cats[$deeperlevel]{$cat}}) {
                 $catlinks .= '<option value="" selected="selected">'.
-                             &mt('Select').'</option>';
-                $buttontext = &mt('Pick subcategory');
+                             &mt('Subcategory ...').'</option>';
             }
-            for (my $k=0; $k<@{$cats[$deeper]{$cat}}; $k++) {
-                my $name = $cats[$deeper]{$cat}[$k];
-                my $item = &escape($name).':'.&escape($cat).':'.$deeper;
+            for (my $k=0; $k<@{$cats[$deeperlevel]{$cat}}; $k++) {
+                my $name = $cats[$deeperlevel]{$cat}[$k];
+                my $item = &escape($name).':'.&escape($cat).':'.$deeperlevel;
                 $catlinks .= '<option value="'.$item.'">'.$name.'</option>'."\n";
             }
-            $catlinks .= '</select>'."\n".
-                         '&nbsp;<input type="submit" name="gocats" value="'.
-                         $buttontext.'" />';
+            $catlinks .= '</select>'."\n";
         } elsif ($cat ne 'instcode') {
             $catlinks .= '&nbsp;'.&mt('(No subcategories)');
         }
+    } else {
+        $selitem = 'currcat_0';
     }
     $catlinks .= $currcat_str.'</td></tr></table></td>';
     return ($catlinks,$has_subcats,$selitem);
 }
 
+sub main_category_selector {
+    my (@cats) = @_;
+    my $maincatlinks = '<select name="currcat_0" onchange="setCatDepth('."'0'".');this.form.submit();">'."\n";
+    if (ref($cats[0]) eq 'ARRAY') {
+        if (@{$cats[0]} > 1) {
+            my $selected = '';
+            if ($env{'form.currcat_0'} eq '') {
+                $selected = ' selected="selected"';    
+            }
+            $maincatlinks .= 
+                '<option value=""'.$selected.'>'.&mt('Select').'</option>'."\n";
+        }
+        for (my $i=0; $i<@{$cats[0]}; $i++) {
+            my $name = $cats[0][$i];
+            my $item = &escape($name).'::0';
+            my $selected;
+            if ($env{'form.currcat_0'} eq $item) {
+                $selected = ' selected="selected"';
+            }
+            $maincatlinks .= '<option value="'.$item.'"'.$selected.'>';
+            if ($name eq 'instcode') {
+                $maincatlinks .= &mt('Official courses (with institutional codes)');
+            } elsif ($name eq 'communities') {
+                $maincatlinks .= &mt('Communities');
+            } else {
+                $maincatlinks .= $name;
+            }
+            $maincatlinks .= '</option>'."\n";
+        }
+        $maincatlinks .= '</select>'."\n";
+    }
+    return $maincatlinks;
+}
+
 sub get_depth_values {
     my $currdepth = 0;
     my $deeper = 0;
@@ -545,8 +585,8 @@ sub user_is_dc {
 }
 
 sub search_official_courselist {
-    my ($domain,$numtitles) = @_;
-    my $instcode = &Apache::courseclassifier::instcode_search_str($domain,$numtitles);
+    my ($domain,$numtitles,$codetitles) = @_;
+    my $instcode = &Apache::courseclassifier::instcode_search_str($domain,$numtitles,$codetitles);
     my $showhidden;
     if (&user_is_dc($domain)) {
         $showhidden = $env{'form.showhidden'};
@@ -603,7 +643,7 @@ sub search_courselist {
 }
 
 sub print_course_listing {
-    my ($domain,$numtitles,$trails,$allitems,$subcats) = @_;
+    my ($domain,$numtitles,$trails,$allitems,$subcats,$codetitles) = @_;
     my $output;
     my %courses;
     my $knownuser = &user_is_known();
@@ -618,12 +658,16 @@ sub print_course_listing {
                                                  $env{'form.coursenum'},
                                                  undef,undef,'.',1);
         if (keys(%courses) == 0) {
-            $output .= &mt('The courseID provided does not match a course in this domain.');
+            if ($env{'form.currcat_0'} eq 'communities::0') {
+                $output .= &mt('The courseID provided does not match a community in this domain.');
+            } else {
+                $output .= &mt('The courseID provided does not match a course in this domain.');
+            }
             return $output;
         }
     } else {
         if ($env{'form.currcat_0'} eq 'instcode::0') {
-            %courses = &search_official_courselist($domain,$numtitles);
+            %courses = &search_official_courselist($domain,$numtitles,$codetitles);
         } else {
             %courses = &search_courselist($domain,$subcats);
         }
@@ -687,10 +731,14 @@ sub construct_data_table {
     }
     if ($knownuser) {
         if ($details) {
-            $output .=
-              '<th>'.&mt('Default Access Dates for Students').'</th>'.
-              '<th>'.&mt('Student Counts').'</th>'.
-              '<th>'.&mt('Auto-enrollment of[_1]registered students','<br />').'</th>';
+            if ($env{'form.currcat_0'} eq 'communities::0') {
+                $output .= '<th>'.&mt('Default Access Dates for Members').'</th>';
+            } else {
+                $output .=
+                    '<th>'.&mt('Default Access Dates for Students').'</th>'.
+                    '<th>'.&mt('Student Counts').'</th>'.
+                    '<th>'.&mt('Auto-enrollment of[_1]registered students','<br />').'</th>';
+            }
         } else {
             $output .= '<th>'.&mt('Details').'</th>';
         }
@@ -959,10 +1007,14 @@ sub courseinfo_row {
                '<td>'.$ownerlast.'</td>';
     if ($knownuser) {
         if ($details) {
-            $output .=
-               '<td>'.$accessdates.'</td>'. 
-               '<td>'.$counts.'</td>'.
-               '<td>'.$autoenrollment.'</td>';
+            if ($env{'form.currcat_0'} eq 'communities::0') {
+                $output .= '<td>'.$accessdates.'</td>';
+            } else {
+                $output .=
+                    '<td>'.$accessdates.'</td>'.
+                    '<td>'.$counts.'</td>'.
+                    '<td>'.$autoenrollment.'</td>';
+            }
         } else {
             $output .= "<td><a href=\"javascript:setCourseId('$cnum')\">".&mt('Show more details').'</a></td>';
         }