--- loncom/interface/loncommon.pm	2002/06/25 17:09:38	1.41
+++ loncom/interface/loncommon.pm	2002/07/03 21:12:38	1.43
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.41 2002/06/25 17:09:38 ng Exp $
+# $Id: loncommon.pm,v 1.43 2002/07/03 21:12:38 ng Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -33,6 +33,7 @@
 # 12/25,12/28 Gerd Kortemeyer
 # YEAR=2002
 # 1/4 Gerd Kortemeyer
+# 6/24,7/2 H. K. Ng
 
 # Makes a table out of the previous attempts
 # Inputs result_from_symbread, user, domain, course_id
@@ -190,6 +191,92 @@ BEGIN {
     
 }
 # ============================================================= END BEGIN BLOCK
+###############################################################
+##           HTML and Javascript Helper Functions            ##
+###############################################################
+
+=pod 
+
+=item browser_and_searcher_javascript 
+
+Returns scalar containing javascript to open a browser window
+or a searcher window.  Also creates 
+
+=over 4
+
+=item openbrowser(formname,elementname,only,omit) [javascript]
+
+inputs: formname, elementname, only, omit
+
+formname and elementname indicate the name of the html form and name of
+the element that the results of the browsing selection are to be placed in. 
+
+Specifying 'only' will restrict the browser to displaying only files
+with the given extension.  Can be a comma seperated list.
+
+Specifying 'omit' will restrict the browser to NOT displaying files
+with the given extension.  Can be a comma seperated list.
+
+=item opensearcher(formname, elementname) [javascript]
+
+Inputs: formname, elementname
+
+formname and elementname specify the name of the html form and the name
+of the element the selection from the search results will be placed in.
+
+=back
+
+=cut
+
+###############################################################
+sub browser_and_searcher_javascript {
+    return <<END;
+    var editbrowser;
+    function openbrowser(formname,elementname,only,omit) {
+        var url = '/res/?';
+        if (editbrowser == null) {
+            url += 'launch=1&';
+        }
+        url += 'catalogmode=interactive&';
+        url += 'mode=edit&';
+        url += 'form=' + formname + '&';
+        if (only != null) {
+            url += 'only=' + only + '&';
+        } 
+        if (omit != null) {
+            url += 'omit=' + omit + '&';
+        }
+        url += 'element=' + elementname + '';
+        var title = 'Browser';
+        var options = 'scrollbars=1,resizable=1,menubar=0';
+        options += ',width=700,height=600';
+        editbrowser = open(url,title,options,'1');
+        editbrowser.focus();
+    }
+    var editsearcher;
+    function opensearcher(formname,elementname) {
+        var url = '/adm/searchcat?';
+        if (editsearcher == null) {
+            url += 'launch=1&';
+        }
+        url += 'catalogmode=interactive&';
+        url += 'mode=edit&';
+        url += 'form=' + formname + '&';
+        url += 'element=' + elementname + '';
+        var title = 'Search';
+        var options = 'scrollbars=1,resizable=1,menubar=0';
+        options += ',width=700,height=600';
+        editsearcher = open(url,title,options,'1');
+        editsearcher.focus();
+    }
+END
+}
+
+
+
+###############################################################
+
+=pod
 
 =item linked_select_forms(...)
 
@@ -778,13 +865,16 @@ sub filedescriptionex {
 # $username,$domain - that of the student
 # $course           - course name
 # $getattempt       - leave blank if want all attempts, else put something.
+# $regexp           - regular expression. If string matches regexp send to
+# $gradesub         - routine that process the string if it matches regexp
 # 
 # output
 # formatted as a table all the attempts, if any.
 #
 sub get_previous_attempt {
-  my ($symb,$username,$domain,$course,$getattempt)=@_;
+  my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
   my $prevattempts='';
+  no strict 'refs';
   if ($symb) {
     my (%returnhash)=
       &Apache::lonnet::restore($symb,$course,$domain,$username);
@@ -796,7 +886,7 @@ sub get_previous_attempt {
 	  $lasthash{$_}=$returnhash{$version.':'.$_};
         }
       }
-      $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#000000">';
+      $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
       $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
       foreach (sort(keys %lasthash)) {
 	my ($ign,@parts) = split(/\./,$_);
@@ -834,6 +924,7 @@ sub get_previous_attempt {
 	} else {
 	  $value=$lasthash{$_};
 	}
+	if ($_ =~/$regexp$/) {$value = &$gradesub($value)}
 	$prevattempts.='<td>'.$value.'&nbsp;</td>';
       }
       $prevattempts.='</tr></table></td></tr></table>';