1: # The LearningOnline Network with CAPA
2: # Edit Handler for RAT Maps
3: #
4: # $Id: lonratedt.pm,v 1.8 2002/05/10 18:58:04 www Exp $
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.
14: #
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/
27: #
28: # (TeX Content Handler
29: #
30: # 05/29/00,05/30 Gerd Kortemeyer)
31: # 7/1,6/30 Gerd Kortemeyer
32:
33: package Apache::lonratedt;
34:
35: use strict;
36: use Apache::Constants qw(:common);
37: use Apache::lonnet;
38: use Apache::lonratsrv;
39:
40: my @links=();
41: my @resources=();
42:
43:
44: # Mapread read maps into global arrays @links and @resources, determines status
45:
46: sub mapread {
47: my $fn=shift;
48:
49: undef @links;
50: undef @resources;
51:
52: my ($outtext,$errtext)=&Apache::lonratsrv::loadmap($fn,'');
53: if ($errtext) { return ($errtext,2); }
54:
55: foreach (split(/\<\&\>/,$outtext)) {
56: my ($command,$parms)=split(/\<\:\>/,$_);
57: my @item=split(/\:/,$parms);
58: if ($command eq 'objcont') {
59: }
60: if ($command eq 'objlinks') {
61: if (defined($links[$item[0]])) {
62: return
63: ('Map too complex, has branchings. Use advanced editor.',1);
64: }
65: if ($links[$item[2]]) {
66: return
67: ('Map too complex, has conditions. Use advanced editor.',1);
68: }
69: $links[$item[0]]=$item[1];
70: }
71:
72: }
73: return $errtext;
74: }
75:
76: # --------------------------------------------------------- Build up RAT screen
77: sub ratedt {
78: my ($r,$url)=@_;
79: $r->print(<<ENDDOCUMENT);
80:
81: <html>
82: <head>
83: <script language="JavaScript">
84: var flag=0;
85: </script>
86: </head>
87: <frameset rows="1,50,*" border=0>
88: <frame name=server src="$url/loadonly/ratserver" noresize noscroll>
89: <frame name=code src="/adm/rat/code.html">
90: <frame name=mapout src="/adm/rat/map.html">
91: </frameset>
92: </html>
93:
94: ENDDOCUMENT
95: }
96:
97: # ---------------------------------------------------------------- Make buttons
98:
99: sub buttons {
100: my $adv=shift;
101: my $output='<form method=post>';
102: if ($adv==1) {
103: $output.='<input type=submit name=forceadv value="Edit">';
104: } else {
105: unless ($adv==2) {
106: $output.='<input type=submit name=forcesmp value="Simple Edit">';
107: }
108: $output.='<input type=submit name=forceadv value="Advanced Edit">';
109: }
110: return $output.'</form><hr>';
111: }
112:
113: sub smpedt {
114: my ($r,$errtext)=@_;
115: my $buttons=&buttons(2);
116: # ----------------------------------------------------- Start simple RAT screen
117: $r->print(<<ENDSMPHEAD);
118: <html>
119: <head>
120: <script>
121: var srch;
122: var srchflag=-1; // 1 means currently open
123: // 0 means closed (but has been open)
124: // -1 means never yet opened/defined
125: var srchmode='';
126:
127: var idx;
128: var idxflag=-1; // 1 means currently open
129: // 0 means closed (but has been open)
130: // -1 means never yet opened/defined
131: var idxmode='';
132:
133: // ------------------------------------------------------ Clears indexer window
134: function idxclear() {
135: idx.document.clear();
136: }
137:
138: // ------------------------------------------------------- Clears search window
139: function srchclear() {
140: srch.document.clear();
141: }
142:
143: // ------------------------------------------------------ Closes indexer window
144: function idxclose() {
145: if (idx && !idx.closed) {
146: idxflag=0;
147: idx.close();
148: }
149: }
150:
151: // ------------------------------------------------------- Closes search window
152: function srchclose() {
153: if (srch && !srch.closed) {
154: srchflag=0;
155: srch.close();
156: }
157: }
158:
159: // -------------------------------------------------------- Open indexer window
160: function idxopen(mode) {
161: var options="scrollbars=1,resizable=1,menubar=0";
162: idxmode=mode;
163: idxflag=1;
164: idx=open("/res/?launch=1&mode=simple&catalogmode="+mode,"idxout",options);
165: idx.focus();
166: }
167:
168: // --------------------------------------------------------- Open search window
169: function srchopen(mode) {
170: var options="scrollbars=1,resizable=1,menubar=0";
171: srchmode=mode;
172: srchflag=1;
173: srch=open("/adm/searchcat?launch=1&mode=simple&catalogmode="+mode,"srchout",options);
174: srch.focus();
175: }
176: // ----------------------------------------------------- launch indexer browser
177: function groupsearch() {
178: srchcheck('groupsearch');
179: }
180:
181: function groupimport() {
182: idxcheck('groupimport');
183: }
184: // ------------------------------------------------------- Do srch status check
185: function srchcheck(mode) {
186: if (!srch || srch.closed || srchmode!=mode) {
187: srchopen(mode);
188: }
189: srch.focus();
190: }
191:
192: // -------------------------------------------------------- Do idx status check
193: function idxcheck(mode) {
194: if (!idx || idx.closed || idxmode!=mode) {
195: idxopen(mode);
196: }
197: idx.focus();
198: }
199: </script>
200: </head>
201: <body bgcolor='#FFFFFF'>
202: $buttons
203: <font color=red>$errtext</font>
204: <a href="javascript:groupsearch()">Group Search</a>
205: <a href="javascript:groupimport()">Group Import</a>
206:
207: ENDSMPHEAD
208:
209: $r->print(
210: '<input type=submit name=forcesmp value="Store"></form></body></html>');
211: }
212:
213: sub nodir {
214: my ($r,$dir)=@_;
215: $dir=~s/^\/home\/\w+\/public\_html//;
216: $r->print(<<ENDNODIR);
217: <html>
218: <body bgcolor='#FFFFFF'>
219: <h1>No such directory: $dir</h1>
220: </body>
221: </html>
222: ENDNODIR
223: }
224:
225: # ---------------------------------------------------------------- View Handler
226:
227: sub viewmap {
228: my ($r,$adv)=@_;
229: $r->print('<html><body bgcolor="#FFFFFF">'.&buttons($adv));
230:
231: $r->print('</body></html>');
232: }
233:
234: # ================================================================ Main Handler
235:
236: sub handler {
237: my $r=shift;
238: $r->content_type('text/html');
239: $r->send_http_header;
240:
241: return OK if $r->header_only;
242:
243: my $url=$r->uri;
244: my $fn=&Apache::lonnet::filelocation('',$url);
245:
246: my ($dir)=($fn=~/^(.+)\/[^\/]+$/);
247: unless (-e $dir) {
248: &nodir($r,$dir);
249: return OK;
250: }
251:
252: # ------------------------------------------- Determine which tools can be used
253: my $adv=0;
254:
255: unless ($ENV{'form.forcesmp'}) {
256: if ($ENV{'form.forceadv'}) {
257: $adv=1;
258: } elsif (my $fh=Apache::File->new($fn)) {
259: my $allmap=join('',<$fh>);
260: $adv=($allmap=~/\<map[^\>]+mode\s*\=\s*(\'|\")rat/is);
261: }
262: }
263:
264: my $errtext='';
265: my $fatal=0;
266:
267: # -------------------------------------------------------------------- Load map
268: ($errtext,$fatal)=&mapread($fn,$errtext);
269:
270: if ($fatal==1) { $adv=1; }
271:
272: # ----------------------------------- adv==1 now means "graphical MUST be used"
273:
274: if ($ENV{'form.forceadv'}) {
275: &ratedt($r,$url);
276: } elsif ($ENV{'form.forcesmp'}) {
277: &smpedt($r,$errtext);
278: } else {
279: &viewmap($r,$adv);
280: }
281: return OK;
282: }
283:
284: 1;
285: __END__
286:
287:
288:
289:
290:
291:
292:
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