Annotation of loncom/html/res/adm/pages/annotator/admannotations.pm, revision 1.27
1.17 albertel 1: # The LearningOnline Network with CAPA
2: # This will take annotations and then plug them into a page.
3: #
1.27 ! albertel 4: # $Id: admannotations.pm,v 1.26 2006/04/20 04:19:55 albertel Exp $
1.17 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
1.1 tyszkabe 14: #
1.17 albertel 15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
1.1 tyszkabe 27: #
28: ##################
29:
1.2 tyszkabe 30: package Apache::admannotations;
1.1 tyszkabe 31:
32: use strict;
33: use Apache::Constants qw(:common);
1.20 albertel 34: use Apache::loncommon();
1.19 albertel 35: use Apache::lonnet;
1.23 albertel 36: use Apache::lonlocal;
1.1 tyszkabe 37:
38: # --------------------------------------------------------------Put annotation
39:
40: sub write_annotation {
1.27 ! albertel 41: my ($symb, $enc, $annotation) = @_;
! 42:
! 43: return if (!$annotation);
! 44:
! 45: my $key = $symb;
! 46: if (!$enc) {
! 47: $key =
! 48: &Apache::lonnet::clutter((&Apache::lonnet::decode_symb($symb))[2]);
1.11 www 49: }
1.27 ! albertel 50:
! 51: &Apache::lonnet::put('nohist_annotations',{$key => $annotation});
1.1 tyszkabe 52: return;
53: }
54:
55: # --------------------------------------------------------------Get annotation
56:
57: sub get_annotation {
1.27 ! albertel 58: my ($symb,$enc) = @_;
! 59:
! 60: my $key = $symb;
! 61: if (!$enc) {
! 62: $key =
! 63: &Apache::lonnet::clutter((&Apache::lonnet::decode_symb($symb))[2]);
! 64: }
! 65: my %annotation=&Apache::lonnet::get('nohist_annotations',[$key]);
! 66: return $annotation{$key};
1.1 tyszkabe 67: }
68:
69: # ------------------------------------------------------------Construct editor
1.27 ! albertel 70: sub js_get_symb {
1.26 albertel 71: return <<ENDJS;
1.27 ! albertel 72: function get_symb() {
! 73: var symb;
1.26 albertel 74: if (typeof(window.opener.clientwindow) != 'undefined') {
1.27 ! albertel 75: symb=window.opener.clientwindow.location.href;
1.26 albertel 76: } else {
1.27 ! albertel 77: symb=window.opener.location.href;
1.26 albertel 78: }
1.27 ! albertel 79: symb=window.opener.currentSymb;
! 80: return symb;
1.26 albertel 81: }
82: ENDJS
83: }
1.1 tyszkabe 84:
85: sub construct_editor {
1.27 ! albertel 86: my ($annotation,$symbnew) = @_;
1.13 www 87: if ($annotation=~/^error:/) { $annotation=''; }
1.21 albertel 88:
1.27 ! albertel 89: my $get_symb = &js_get_symb();
1.26 albertel 90:
1.24 albertel 91: my $js = <<ENDJS;
1.20 albertel 92: <script type="text/javascript">
1.12 www 93: var timeout;
94:
1.27 ! albertel 95: $get_symb
1.26 albertel 96:
1.12 www 97: function changed() {
1.27 ! albertel 98: var symbnew=get_symb();
! 99: if (symbnew!=document.annotInfo.symbold.value) {
! 100: document.annotInfo.symbnew.value=symbnew;
1.12 www 101: document.annotInfo.submit();
102: }
103: timeout=setTimeout('changed();','1000');
1.2 tyszkabe 104: }
1.1 tyszkabe 105: </script>
1.20 albertel 106: ENDJS
107:
108: my %load_items = ('onload' => "timeout=setTimeout('changed()','1000')",
109: 'onunload' => 'clearTimeout(timeout);');
110: my $start_page =
111: &Apache::loncommon::start_page('Annotations',$js,
112: {'only_body' => 1,
113: 'add_entries' => \%load_items,});
114:
115: my $end_page =
116: &Apache::loncommon::end_page();
1.23 albertel 117:
118: my %lt = ( 'close no save' => "Close (no save)",
119: 'save' => "Save and Update",);
120: %lt = &Apache::lonlocal::texthash(%lt);
121:
1.20 albertel 122: return(<<END_HTML)
123: $start_page
1.5 tyszkabe 124: <center>
1.22 albertel 125: <form name="annotInfo" method="post" action="/adm/annotations">
126: <textarea name="annotation" wrap="on" rows="12" cols="36">$annotation</textarea><br />
1.27 ! albertel 127: <input type="hidden" name="symbold" value="$symbnew" />
! 128: <input type="hidden" name="symbnew" value="" />
1.23 albertel 129: <input type="button" name="send" value="$lt{'save'}"
1.27 ! albertel 130: onclick="javascript:this.form.symbnew.value=get_symb();this.form.submit();" />
1.23 albertel 131: <input type="button" name="close" value="$lt{'close no save'}"
1.22 albertel 132: onclick="javascript:window.close();" />
133: </form>
1.5 tyszkabe 134: </center>
1.20 albertel 135: $end_page
1.1 tyszkabe 136: END_HTML
137: }
138:
1.7 tyszkabe 139: # ----------------------------------------------------Constructs error window
1.5 tyszkabe 140:
1.6 tyszkabe 141: sub construct_error {
1.21 albertel 142: my ($annot_error,$button_name) = @_;
1.26 albertel 143:
1.27 ! albertel 144: my $get_symb = &js_get_symb();
1.26 albertel 145: my $js = <<ENDJS;
146: <script type="text/javascript">
1.27 ! albertel 147: $get_symb
1.26 albertel 148: </script>
149: ENDJS
150:
151: my $start_page = &Apache::loncommon::start_page('Annotations',$js,
1.21 albertel 152: {'only_body' => 1,});
153: my $end_page = &Apache::loncommon::end_page();
1.20 albertel 154:
1.23 albertel 155: my %lt = ( 'close' => "Close",
156: 'button' => $button_name,);
157: %lt = &Apache::lonlocal::texthash(%lt);
158:
1.21 albertel 159: return(<<END_HTML2)
1.20 albertel 160: $start_page
1.5 tyszkabe 161: <center>
1.22 albertel 162: <form name="annotInfo" method="post" action="/adm/annotations">
1.6 tyszkabe 163: <table bgcolor="#FFFFFF" width="100%" height="90%" align="center">
1.5 tyszkabe 164: <td>
1.22 albertel 165: <font size="+1"><i>
1.6 tyszkabe 166: $annot_error
1.12 www 167: </i></font>
1.5 tyszkabe 168: </td>
169: </table>
1.27 ! albertel 170: <input type="hidden" name="symbold" value="" />
! 171: <input type="hidden" name="symbnew" value="" />
1.23 albertel 172: <input type="button" name="send" value="$lt{'button'}"
1.27 ! albertel 173: onclick="javascript:this.form.symbnew.value=get_symb();this.form.submit();" />
1.23 albertel 174: <input type="button" name="close" value="$lt{'close'}"
1.22 albertel 175: onclick="javascript:window.close();" />
176: </form>
1.5 tyszkabe 177: </center>
1.20 albertel 178: $end_page
1.5 tyszkabe 179: END_HTML2
180: }
181:
1.27 ! albertel 182: sub clean_symb {
! 183: my ($symb) = @_;
! 184:
! 185: &Apache::lonenc::check_decrypt(\$symb);
! 186: my $enc = $env{'request.enc'};
! 187: delete($env{'request.enc'});
! 188:
! 189: return ($symb,$enc);
! 190: }
! 191:
1.7 tyszkabe 192: # ---------------------------------------------------------------Main Handler
1.1 tyszkabe 193:
194: sub handler {
1.25 albertel 195: my ($r) = @_;
196:
197: &Apache::loncommon::content_type($r,'text/html');
1.21 albertel 198: $r->send_http_header;
199: return OK if $r->header_only;
200:
201:
202: my $page;
203:
1.27 ! albertel 204: my ($symb_old,$symb_old_enc) = &clean_symb($env{'form.symbold'});
! 205: my ($symb_new,$symb_new_enc) = &clean_symb($env{'form.symbnew'});
! 206:
1.21 albertel 207: my $annotation=$env{'form.annotation'};
208:
1.27 ! albertel 209: if ($symb_old) {
! 210: &write_annotation($symb_old,$symb_old_enc,$annotation);
1.21 albertel 211: }
1.27 ! albertel 212: if (exists($env{'form.symbnew'})) {
! 213: unless ($symb_new) {
1.25 albertel 214: $page=&construct_error(&mt("Cannot annotate current window. Please point your browser to a LON-CAPA page and then 'continue'."),"continue");
1.21 albertel 215: } else {
1.27 ! albertel 216: if ($symb_old ne $symb_new) {
! 217: $annotation=&get_annotation($symb_new,$symb_new_enc);
1.21 albertel 218: }
1.27 ! albertel 219: # pass same symb through.
! 220: $page=&construct_editor($annotation,$env{'form.symbnew'});
1.21 albertel 221: }
222: }
223: $r->print($page);
224: return OK;
1.1 tyszkabe 225: }
226:
227: 1;
228: __END__
1.8 tyszkabe 229:
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