UI improvements for long-running searches

mailbox/index.cgi

@@ -8,6 +8,7 @@ our ($remote_user, $remote_pass);
 our $special_folder_id;
 our $plen;
 our ($cb); # XXX
+our $search_folder_id;
 
 require './mailbox-lib.pl';
 &ReadParse();
@@ -102,6 +103,21 @@ my $sel = &folder_select(\@folders, $folder, "id", undef, 1, 1);
 # Show page flipping arrows
 &show_arrows();
 
+# If this is the search results folder, check if a search is in progress
+if ($folder->{'id'} eq $search_folder_id) {
+	my ($pid, $action) = &test_lock_folder($folder);
+	if ($pid) {
+		if ($action && $action->{'search'}) {
+			print "<b>",&text('index_searching',
+				"<i>".&html_escape($action->{'search'})."</i>"),
+			      "</b><p>\n";
+			}
+		else {
+			print "<b>",&text('index_searching2'),"</b><p>\n";
+			}
+		}
+	}
+
 # Work out displayed range
 my $start = int($in{'start'});
 my $end = $in{'start'}+$perpage-1;

mailbox/mail_search.cgi

@@ -77,10 +77,14 @@ if ($folder && $folder->{'id'} eq $search_folder_id) {
 
 # Create a virtual folder for the search results
 my $virt;
+my $virt_exists = 0;
 if ($in{'dest_def'} || !defined($in{'dest'})) {
 	# Use the default search results folder
 	($virt) = grep { $_->{'type'} == 6 && $_->{'id'} == 1 } @folders;
-	if (!$virt) {
+	if ($virt) {
+		$virt_exists = 1;
+		}
+	else {
 		$virt = { 'id' => $search_folder_id,
 			  'type' => 6,
 			};
@@ -94,6 +98,13 @@ else {
 		  'name' => $in{'dest'} };
 	}
 
+# Lock the output folder
+if ($virt_exists) {
+	my %act;
+	$act{'search'} = $in{'search'} if ($in{'simple'});
+	&lock_folder($virt, \%act);
+	}
+
 # Show some progress if it's a big folder
 my $large_search = 0;
 if ($in{'returned_format'} ne "json" &&
@@ -239,6 +250,7 @@ else {
 	}
 &delete_new_sort_index($virt);
 &save_folder($virt, $virt);
+&unlock_folder($virt) if ($virt_exists);
 
 if ($in{'returned_format'} eq "json") {
 	#Return in JSON format if needed

mailbox/ulang/en

@@ -1,5 +1,8 @@
 index_title=Mail In $1
 index_return=mail list
+index_searching=A search for $1 is in progress. Results will be shown here when it completes.
+index_searching2=A complex search is in progress. Results will be shown here when it completes.
+
 mail_title=Read Mail
 mail_none=There are no messages in folder $1
 mail_pos=Messages $1 to $2 of $3 in folder $4
@@ -223,7 +226,7 @@ search_edest=Missing virtual folder name for results
 search_eself=The search results folder cannot be searched
 search_doing=Searching for $1 in folder $2.
 search_doing2=Searching messages in the selected folder.
-search_results=Match messages will be shown in the <a href='$1'>search results</a> folder when the search completes ...
+search_results=Matching messages will be shown in the <a href='$1'>search results</a> folder when the search completes ...
 
 virtualize_ename=Missing virtual folder name