Annotations

# The LearningOnline Network with CAPA # This will take annotations and then plug them into a page. # # $Id: admannotations.pm,v 1.18 2003/06/23 18:54:37 www Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # 08/25/00 Ben Tyszka # # 10/17,10/18,10/20 Gerd Kortemeyer # # ################## package Apache::admannotations; use strict; use Apache::Constants qw(:common); use Apache::lonnet(); # --------------------------------------------------------------Put annotation sub write_annotation { my $urlold=shift; my $annotation=shift; if ($annotation) { &Apache::lonnet::put('nohist_annotations',{$urlold => $annotation}); } return; } # --------------------------------------------------------------Get annotation sub get_annotation { my $urlnew=shift; my %annotation=&Apache::lonnet::get('nohist_annotations',[$urlnew]); return %annotation; } # ------------------------------------------------------------Construct editor sub construct_editor { my $annotation=shift; if ($annotation=~/^error:/) { $annotation=''; } my $urlnew=shift; return(< Annotations END_HTML } # ----------------------------------------------------Constructs error window sub construct_error { my $annot_error=shift; my $button_name=shift; return(< Annotations END_HTML2 } # ---------------------------------------------------------------Main Handler sub handler { my $r=shift; $r->content_type('text/html'); $r->send_http_header; return OK if $r->header_only; my $page; my %annot_hash; my $urlold=$ENV{'form.urlold'}; $urlold=~s/^http\:\/\///; $urlold=~s/^[^\/]+//; $urlold=~s/\?.*$//; my $urlnew=$ENV{'form.urlnew'}; $urlnew=~s/^http\:\/\///; $urlnew=~s/^[^\/]+//; $urlnew=~s/\?.*$//; my $annotation=$ENV{'form.annotation'}; if ($urlold) { write_annotation($urlold,$annotation); } if (exists($ENV{'form.urlnew'})) { unless ($urlnew) { $page=construct_error("Cannot annotate current window. Please point your browser to a LON-CAPA page and then 'continue'.","continue"); } else { if ($urlold eq $urlnew) { $annot_hash{$urlnew}=$annotation; } else { %annot_hash=get_annotation($urlnew); } $page=construct_editor($annot_hash{$urlnew},$ENV{'form.urlnew'}); } } $r->print($page); return OK; } 1; __END__