--- loncom/interface/lonspeller.pm	2004/07/22 16:17:43	1.1
+++ loncom/interface/lonspeller.pm	2006/07/03 13:40:42	1.17
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Interface routines for Aspell
 #
-# $Id: lonspeller.pm,v 1.1 2004/07/22 16:17:43 www Exp $
+# $Id: lonspeller.pm,v 1.17 2006/07/03 13:40:42 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -30,15 +30,138 @@
 
 package Apache::lonspeller;
 
+use Apache::Constants qw(:common);
 use Text::Aspell;
 use Apache::lonlocal;
+use Apache::lonnet;
+use Apache::lontexconvert();
+use HTML::LCParser;
 use strict;
 
-sub getspeller {
-    my $speller = Text::Aspell->new;
-    $speller->set_option('lang','en_US');
-    $speller->set_option('sug-mode','fast');
-    return $speller;
+my $speller;
+my $insidelink;
+
+sub spellcheck_language {
+    if ($env{'form.lang'}) { return $env{'form.lang'}; }
+    if (&mt('spellcheck_lang') ne 'spellcheck_lang') {
+	return &mt('spellcheck_lang');
+    }
+    return 'en_US';
+}
+
+sub set_language {
+    my $lang=&spellcheck_language();
+    $speller->set_option('lang',$lang);
+}
+
+{
+    my $uniq;
+    sub get_uniq {
+	return ++$uniq;
+    }
+}
+
+sub textsection {
+    my $input=shift;
+    my $output='';
+    &set_language();
+    foreach my $word (split(/\b/,$input)) {
+	if (($word=~/\W/) || ($word=~/^(lt|gt|nbsp|amp)$/i)
+	    || ($speller->check($word))) {
+	    $output.=$word;
+	} else {
+	    my $suggestions=join(' ',$speller->suggest($word));
+	    $suggestions = &Apache::loncommon::js_ready($suggestions);
+	    if (($suggestions) && (!$insidelink)) {
+		my $start_page=
+		    &Apache::loncommon::start_page('Speller Suggestions',undef,
+						   {'only_body'   => 1,
+						    'js_ready'    => 1,
+						    'bgcolor'     => '#FFFFFF'});
+		my $end_page=
+		    &Apache::loncommon::end_page({'js_ready'    => 1,});
+		my $num = &get_uniq();
+		my $info  ='<h3>'.$word.'</h3>'.$suggestions;
+		$output .= "<script type=\"text/javascript\">
+//<!--
+ function LONCAPA_lonspeller_$num() {
+    spellwin=open(".&Apache::lonhtmlcommon::javascript_nothing().",'spellwin','width=140,height=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
+    spellwin.".&Apache::lonhtmlcommon::javascript_docopen().";
+    spellwin.document.writeln('$start_page $info $end_page');
+    spellwin.document.close();
+    spellwin.focus();
+}
+//-->
+</script><a href=\"javascript:LONCAPA_lonspeller_$num();void(0);\">";
+	    }
+	    $output.='<font color="red">'.$word.'</font>';
+	    if (($suggestions) && (!$insidelink)) { $output.='</a>'; }
+	}
+    }
+    return $output;
+}
+
+
+sub markeduptext {
+    my $input=shift;
+    my $output='';
+    my $parser=HTML::LCParser->new(\$input);
+    $insidelink=0;
+    my $token;
+    while ($token=$parser->get_token) {
+	if ($token->[0] eq 'T') {
+	    $output.=&textsection($token->[1]);
+	} elsif ($token->[0] eq 'S') {
+	    $output.=$token->[4];
+	    foreach my $tag ('m','script') {
+		if ($token->[1] eq $tag) {
+		    $output.=$parser->get_text('/'.$tag);
+		}
+	    }
+	    if ($token->[1] eq 'a') {
+		$insidelink=1;
+	    }
+	} elsif ($token->[0] eq 'E') {
+	    $output.=$token->[2];
+	    if ($token->[1] eq 'a') {
+		$insidelink=0;
+	    }
+	}
+    }
+    $insidelink=0;
+    return $output;
+}
+
+sub initspeller {
+    unless (defined($speller)) {
+	$speller = Text::Aspell->new;
+	$speller->set_option('lang','en_US');
+    }
+    $insidelink=0;
+}
+
+sub handler {
+    my $r = shift;
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+    return OK if $r->header_only;
+
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
+
+    &initspeller();
+    my $start_page = 
+	&Apache::loncommon::start_page('Spell Checker',undef,
+				       {'only_body' => 1,
+					'bgcolor'   => '#DDDDDD'});
+    $r->print($start_page.
+	      &Apache::lontexconvert::msgtexconverted(
+				     &markeduptext($env{'form.text'})).
+	      &Apache::loncommon::end_page());
+    return OK;
+}
+
+BEGIN {
+    &initspeller();
 }
 
 1;