1: # The LearningOnline Network with CAPA
2: # Edit Handler for RAT Maps
3: #
4: # $Id: lonratedt.pm,v 1.9 2002/05/10 19:46:52 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: # -------------------------------------------------------------------- Read map
56: foreach (split(/\<\&\>/,$outtext)) {
57: my ($command,$number,$content)=split(/\<\:\>/,$_);
58: if ($command eq 'objcont') {
59: $resources[$number]=$content;
60: }
61: if ($command eq 'objlinks') {
62: $links[$number]=$content;
63: }
64: }
65: # ------------------------------------------------------- Is this a linear map?
66: my @starters=();
67: my @endings=();
68: undef @starters;
69: undef @endings;
70:
71: foreach (@links) {
72: if (defined($_)) {
73: my ($start,$end,$cond)=split(/\:/,$_);
74: if ((defined($starters[$start])) || (defined($endings[$end]))) {
75: return
76: ('Map too complex, has branchings. Use advanced editor.',1);
77: }
78: $starters[$start]=1;
79: $endings[$end]=1;
80: if ($cond) {
81: return
82: ('Map too complex, has conditions. Use advanced editor.',1);
83: }
84: }
85:
86: }
87: return $errtext;
88: }
89:
90: # --------------------------------------------------------- Build up RAT screen
91: sub ratedt {
92: my ($r,$url)=@_;
93: $r->print(<<ENDDOCUMENT);
94:
95: <html>
96: <head>
97: <script language="JavaScript">
98: var flag=0;
99: </script>
100: </head>
101: <frameset rows="1,50,*" border=0>
102: <frame name=server src="$url/loadonly/ratserver" noresize noscroll>
103: <frame name=code src="/adm/rat/code.html">
104: <frame name=mapout src="/adm/rat/map.html">
105: </frameset>
106: </html>
107:
108: ENDDOCUMENT
109: }
110:
111: # ---------------------------------------------------------------- Make buttons
112:
113: sub buttons {
114: my $adv=shift;
115: my $output='<form method=post>';
116: if ($adv==1) {
117: $output.='<input type=submit name=forceadv value="Edit">';
118: } else {
119: unless ($adv==2) {
120: $output.='<input type=submit name=forcesmp value="Simple Edit">';
121: }
122: $output.='<input type=submit name=forceadv value="Advanced Edit">';
123: }
124: return $output.'</form><hr>';
125: }
126:
127: sub smpedt {
128: my ($r,$errtext)=@_;
129: my $buttons=&buttons(2);
130: # ----------------------------------------------------- Start simple RAT screen
131: $r->print(<<ENDSMPHEAD);
132: <html>
133: <head>
134: <script>
135: var srch;
136: var srchflag=-1; // 1 means currently open
137: // 0 means closed (but has been open)
138: // -1 means never yet opened/defined
139: var srchmode='';
140:
141: var idx;
142: var idxflag=-1; // 1 means currently open
143: // 0 means closed (but has been open)
144: // -1 means never yet opened/defined
145: var idxmode='';
146:
147: // ------------------------------------------------------ Clears indexer window
148: function idxclear() {
149: idx.document.clear();
150: }
151:
152: // ------------------------------------------------------- Clears search window
153: function srchclear() {
154: srch.document.clear();
155: }
156:
157: // ------------------------------------------------------ Closes indexer window
158: function idxclose() {
159: if (idx && !idx.closed) {
160: idxflag=0;
161: idx.close();
162: }
163: }
164:
165: // ------------------------------------------------------- Closes search window
166: function srchclose() {
167: if (srch && !srch.closed) {
168: srchflag=0;
169: srch.close();
170: }
171: }
172:
173: // -------------------------------------------------------- Open indexer window
174: function idxopen(mode) {
175: var options="scrollbars=1,resizable=1,menubar=0";
176: idxmode=mode;
177: idxflag=1;
178: idx=open("/res/?launch=1&mode=simple&catalogmode="+mode,"idxout",options);
179: idx.focus();
180: }
181:
182: // --------------------------------------------------------- Open search window
183: function srchopen(mode) {
184: var options="scrollbars=1,resizable=1,menubar=0";
185: srchmode=mode;
186: srchflag=1;
187: srch=open("/adm/searchcat?launch=1&mode=simple&catalogmode="+mode,"srchout",options);
188: srch.focus();
189: }
190: // ----------------------------------------------------- launch indexer browser
191: function groupsearch() {
192: srchcheck('groupsearch');
193: }
194:
195: function groupimport() {
196: idxcheck('groupimport');
197: }
198: // ------------------------------------------------------- Do srch status check
199: function srchcheck(mode) {
200: if (!srch || srch.closed || srchmode!=mode) {
201: srchopen(mode);
202: }
203: srch.focus();
204: }
205:
206: // -------------------------------------------------------- Do idx status check
207: function idxcheck(mode) {
208: if (!idx || idx.closed || idxmode!=mode) {
209: idxopen(mode);
210: }
211: idx.focus();
212: }
213: </script>
214: </head>
215: <body bgcolor='#FFFFFF'>
216: $buttons
217: <font color=red>$errtext</font>
218: <a href="javascript:groupsearch()">Group Search</a>
219: <a href="javascript:groupimport()">Group Import</a>
220:
221: ENDSMPHEAD
222:
223: $r->print(
224: '<input type=submit name=forcesmp value="Store"></form></body></html>');
225: }
226:
227: sub nodir {
228: my ($r,$dir)=@_;
229: $dir=~s/^\/home\/\w+\/public\_html//;
230: $r->print(<<ENDNODIR);
231: <html>
232: <body bgcolor='#FFFFFF'>
233: <h1>No such directory: $dir</h1>
234: </body>
235: </html>
236: ENDNODIR
237: }
238:
239: # ---------------------------------------------------------------- View Handler
240:
241: sub viewmap {
242: my ($r,$adv)=@_;
243: $r->print('<html><body bgcolor="#FFFFFF">'.&buttons($adv));
244: foreach (@resources) {
245: if (defined($_)) {
246: my ($title,$url)=split(/\:/,$_);
247: $title=~s/\&colon\;/\:/g;
248: $url=~s/\&colon\;/\:/g;
249: unless ($title) { $title='<i>Unknown</i>'; }
250: if ($url) {
251: $r->print('<a href="'.&Apache::lonratsrv::qtescape($url).'">');
252: }
253: $r->print(&Apache::lonratsrv::qtescape($title));
254: if ($url) { $r->print('</a>'); }
255: $r->print('<br>');
256: }
257: }
258: $r->print('</body></html>');
259: }
260:
261: # ================================================================ Main Handler
262:
263: sub handler {
264: my $r=shift;
265: $r->content_type('text/html');
266: $r->send_http_header;
267:
268: return OK if $r->header_only;
269:
270: my $url=$r->uri;
271: my $fn=&Apache::lonnet::filelocation('',$url);
272:
273: my ($dir)=($fn=~/^(.+)\/[^\/]+$/);
274: unless (-e $dir) {
275: &nodir($r,$dir);
276: return OK;
277: }
278:
279: # ------------------------------------------- Determine which tools can be used
280: my $adv=0;
281:
282: unless ($ENV{'form.forcesmp'}) {
283: if ($ENV{'form.forceadv'}) {
284: $adv=1;
285: } elsif (my $fh=Apache::File->new($fn)) {
286: my $allmap=join('',<$fh>);
287: $adv=($allmap=~/\<map[^\>]+mode\s*\=\s*(\'|\")rat/is);
288: }
289: }
290:
291: my $errtext='';
292: my $fatal=0;
293:
294: # -------------------------------------------------------------------- Load map
295: ($errtext,$fatal)=&mapread($fn,$errtext);
296:
297: if ($fatal==1) { $adv=1; }
298:
299: # ----------------------------------- adv==1 now means "graphical MUST be used"
300:
301: if ($ENV{'form.forceadv'}) {
302: &ratedt($r,$url);
303: } elsif ($ENV{'form.forcesmp'}) {
304: &smpedt($r,$errtext);
305: } else {
306: &viewmap($r,$adv);
307: }
308: return OK;
309: }
310:
311: 1;
312: __END__
313:
314:
315:
316:
317:
318:
319:
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