Annotation of rat/lonratedt.pm, revision 1.11
1.1 www 1: # The LearningOnline Network with CAPA
2: # Edit Handler for RAT Maps
1.5 www 3: #
1.11 ! www 4: # $Id: lonratedt.pm,v 1.10 2002/05/11 23:23:01 www Exp $
1.5 www 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: #
1.1 www 28: # (TeX Content Handler
29: #
30: # 05/29/00,05/30 Gerd Kortemeyer)
1.4 www 31: # 7/1,6/30 Gerd Kortemeyer
1.1 www 32:
33: package Apache::lonratedt;
34:
35: use strict;
36: use Apache::Constants qw(:common);
1.3 www 37: use Apache::lonnet;
1.7 www 38: use Apache::lonratsrv;
1.1 www 39:
1.10 www 40: my @order=();
1.8 www 41: my @resources=();
42:
43:
44: # Mapread read maps into global arrays @links and @resources, determines status
1.10 www 45: # sets @order - pointer to resources in right order
46: # sets @resources - array with the resources with correct idx
47: #
1.8 www 48: sub mapread {
49: my $fn=shift;
50:
1.10 www 51: my @links;
1.8 www 52: undef @links;
53: undef @resources;
1.10 www 54: undef @order;
1.8 www 55:
56: my ($outtext,$errtext)=&Apache::lonratsrv::loadmap($fn,'');
57: if ($errtext) { return ($errtext,2); }
58:
1.9 www 59: # -------------------------------------------------------------------- Read map
1.8 www 60: foreach (split(/\<\&\>/,$outtext)) {
1.9 www 61: my ($command,$number,$content)=split(/\<\:\>/,$_);
1.8 www 62: if ($command eq 'objcont') {
1.9 www 63: $resources[$number]=$content;
1.8 www 64: }
65: if ($command eq 'objlinks') {
1.9 www 66: $links[$number]=$content;
67: }
68: }
69: # ------------------------------------------------------- Is this a linear map?
70: my @starters=();
71: my @endings=();
72: undef @starters;
73: undef @endings;
74:
75: foreach (@links) {
76: if (defined($_)) {
77: my ($start,$end,$cond)=split(/\:/,$_);
78: if ((defined($starters[$start])) || (defined($endings[$end]))) {
1.8 www 79: return
1.10 www 80: ('Map has branchings. Use advanced editor.',1);
1.8 www 81: }
1.9 www 82: $starters[$start]=1;
83: $endings[$end]=1;
84: if ($cond) {
1.8 www 85: return
1.10 www 86: ('Map has conditions. Use advanced editor.',1);
1.8 www 87: }
88: }
89:
90: }
1.10 www 91: for (my $i=0; $i<=$#resources; $i++) {
92: if (defined($resources[$i])) {
93: unless (($starters[$i]) || ($endings[$i])) {
94: return
95: ('Map has unconnected resources. Use advanced editor.',1);
96: }
97: }
98: }
99:
100: # -------------------------------------------------- This is a linear map, sort
101:
102: my $startidx=0;
103: my $endidx=0;
104: for (my $i=0; $i<=$#resources; $i++) {
105: if (defined($resources[$i])) {
106: my ($title,$url,$ext,$type)=split(/\:/,$resources[$i]);
107: if ($type eq 'start') { $startidx=$i; }
108: if ($type eq 'finish') { $endidx=$i; }
109: }
110: }
111: my $k=0;
112: my $currentidx=$startidx;
113: $order[$k]=$currentidx;
114: for (my $i=0; $i<=$#resources; $i++) {
115: foreach (@links) {
116: my ($start,$end)=split(/\:/,$_);
117: if ($start==$currentidx) {
118: $currentidx=$end;
119: $k++;
120: $order[$k]=$currentidx;
121: last;
122: }
123: }
124: if ($currentidx==$endidx) { last; }
125: }
1.8 www 126: return $errtext;
127: }
128:
1.3 www 129: # --------------------------------------------------------- Build up RAT screen
130: sub ratedt {
131: my ($r,$url)=@_;
1.1 www 132: $r->print(<<ENDDOCUMENT);
133:
134: <html>
1.2 harris41 135: <head>
136: <script language="JavaScript">
137: var flag=0;
138: </script>
139: </head>
1.1 www 140: <frameset rows="1,50,*" border=0>
141: <frame name=server src="$url/loadonly/ratserver" noresize noscroll>
142: <frame name=code src="/adm/rat/code.html">
143: <frame name=mapout src="/adm/rat/map.html">
144: </frameset>
145: </html>
146:
147: ENDDOCUMENT
1.3 www 148: }
149:
1.8 www 150: # ---------------------------------------------------------------- Make buttons
151:
152: sub buttons {
153: my $adv=shift;
154: my $output='<form method=post>';
155: if ($adv==1) {
156: $output.='<input type=submit name=forceadv value="Edit">';
157: } else {
158: unless ($adv==2) {
159: $output.='<input type=submit name=forcesmp value="Simple Edit">';
160: }
161: $output.='<input type=submit name=forceadv value="Advanced Edit">';
162: }
163: return $output.'</form><hr>';
164: }
165:
1.3 www 166: sub smpedt {
1.8 www 167: my ($r,$errtext)=@_;
168: my $buttons=&buttons(2);
1.11 ! www 169: my $targetwindow=join("\n",map {
! 170: my ($name)=split(/\:/,$resources[$_]);
! 171: unless ($name) { $name='UNKNOWN'; }
! 172: '<option value="t'.$_.'">'.$name.'</option>';
! 173: } @order);
! 174:
1.8 www 175: # ----------------------------------------------------- Start simple RAT screen
1.3 www 176: $r->print(<<ENDSMPHEAD);
177: <html>
1.6 www 178: <head>
179: <script>
180: var srch;
181: var srchflag=-1; // 1 means currently open
182: // 0 means closed (but has been open)
183: // -1 means never yet opened/defined
184: var srchmode='';
185:
186: var idx;
187: var idxflag=-1; // 1 means currently open
188: // 0 means closed (but has been open)
189: // -1 means never yet opened/defined
190: var idxmode='';
191:
192: // ------------------------------------------------------ Clears indexer window
193: function idxclear() {
194: idx.document.clear();
195: }
196:
197: // ------------------------------------------------------- Clears search window
198: function srchclear() {
199: srch.document.clear();
200: }
201:
202: // ------------------------------------------------------ Closes indexer window
203: function idxclose() {
204: if (idx && !idx.closed) {
205: idxflag=0;
206: idx.close();
207: }
208: }
209:
210: // ------------------------------------------------------- Closes search window
211: function srchclose() {
212: if (srch && !srch.closed) {
213: srchflag=0;
214: srch.close();
215: }
216: }
217:
218: // -------------------------------------------------------- Open indexer window
219: function idxopen(mode) {
220: var options="scrollbars=1,resizable=1,menubar=0";
221: idxmode=mode;
222: idxflag=1;
223: idx=open("/res/?launch=1&mode=simple&catalogmode="+mode,"idxout",options);
224: idx.focus();
225: }
226:
227: // --------------------------------------------------------- Open search window
228: function srchopen(mode) {
229: var options="scrollbars=1,resizable=1,menubar=0";
230: srchmode=mode;
231: srchflag=1;
232: srch=open("/adm/searchcat?launch=1&mode=simple&catalogmode="+mode,"srchout",options);
233: srch.focus();
234: }
235: // ----------------------------------------------------- launch indexer browser
236: function groupsearch() {
237: srchcheck('groupsearch');
238: }
239:
240: function groupimport() {
241: idxcheck('groupimport');
242: }
243: // ------------------------------------------------------- Do srch status check
244: function srchcheck(mode) {
245: if (!srch || srch.closed || srchmode!=mode) {
246: srchopen(mode);
247: }
248: srch.focus();
249: }
250:
251: // -------------------------------------------------------- Do idx status check
252: function idxcheck(mode) {
253: if (!idx || idx.closed || idxmode!=mode) {
254: idxopen(mode);
255: }
256: idx.focus();
257: }
258: </script>
259: </head>
1.3 www 260: <body bgcolor='#FFFFFF'>
1.8 www 261: $buttons
1.7 www 262: <font color=red>$errtext</font>
1.11 ! www 263: <form method=post>
! 264: <input type=hidden name=forcesmp value=1>
! 265: <table>
! 266: <tr><th>Import</th><th> </th><th>Target</th></tr>
! 267: <tr><td>
1.6 www 268: <a href="javascript:groupsearch()">Group Search</a>
269: <a href="javascript:groupimport()">Group Import</a>
1.11 ! www 270: </td><td> </td><td> </td></tr>
! 271: <tr><td>
! 272: </td>
! 273: <td>
! 274: <input type=submit name=cut value='<<<'><p>
! 275: <input type=submit name=paste value='>>>'>
! 276: </td>
! 277: <td><select name="target" multiple>
! 278: $targetwindow
! 279: </select>
1.3 www 280: ENDSMPHEAD
1.8 www 281:
1.11 ! www 282: $r->print('</table></form></body></html>');
1.3 www 283: }
284:
1.11 ! www 285: # ----------------------------------------------------------------- No such dir
1.4 www 286: sub nodir {
287: my ($r,$dir)=@_;
288: $dir=~s/^\/home\/\w+\/public\_html//;
289: $r->print(<<ENDNODIR);
290: <html>
291: <body bgcolor='#FFFFFF'>
292: <h1>No such directory: $dir</h1>
293: </body>
294: </html>
295: ENDNODIR
296: }
297:
1.8 www 298: # ---------------------------------------------------------------- View Handler
299:
300: sub viewmap {
1.10 www 301: my ($r,$adv,$errtext)=@_;
1.8 www 302: $r->print('<html><body bgcolor="#FFFFFF">'.&buttons($adv));
1.10 www 303: if ($errtext) {
304: $r->print($errtext.'<hr>');
305: }
1.9 www 306: foreach (@resources) {
307: if (defined($_)) {
308: my ($title,$url)=split(/\:/,$_);
309: $title=~s/\&colon\;/\:/g;
310: $url=~s/\&colon\;/\:/g;
311: unless ($title) { $title='<i>Unknown</i>'; }
312: if ($url) {
313: $r->print('<a href="'.&Apache::lonratsrv::qtescape($url).'">');
314: }
315: $r->print(&Apache::lonratsrv::qtescape($title));
316: if ($url) { $r->print('</a>'); }
317: $r->print('<br>');
318: }
319: }
1.8 www 320: $r->print('</body></html>');
321: }
322:
1.3 www 323: # ================================================================ Main Handler
324:
325: sub handler {
326: my $r=shift;
327: $r->content_type('text/html');
328: $r->send_http_header;
329:
330: return OK if $r->header_only;
331:
332: my $url=$r->uri;
333: my $fn=&Apache::lonnet::filelocation('',$url);
334:
1.4 www 335: my ($dir)=($fn=~/^(.+)\/[^\/]+$/);
336: unless (-e $dir) {
337: &nodir($r,$dir);
338: return OK;
339: }
1.8 www 340:
341: # ------------------------------------------- Determine which tools can be used
1.3 www 342: my $adv=0;
343:
344: unless ($ENV{'form.forcesmp'}) {
345: if ($ENV{'form.forceadv'}) {
346: $adv=1;
347: } elsif (my $fh=Apache::File->new($fn)) {
348: my $allmap=join('',<$fh>);
349: $adv=($allmap=~/\<map[^\>]+mode\s*\=\s*(\'|\")rat/is);
350: }
351: }
352:
1.8 www 353: my $errtext='';
354: my $fatal=0;
355:
356: # -------------------------------------------------------------------- Load map
357: ($errtext,$fatal)=&mapread($fn,$errtext);
358:
359: if ($fatal==1) { $adv=1; }
360:
361: # ----------------------------------- adv==1 now means "graphical MUST be used"
362:
363: if ($ENV{'form.forceadv'}) {
1.3 www 364: &ratedt($r,$url);
1.8 www 365: } elsif ($ENV{'form.forcesmp'}) {
366: &smpedt($r,$errtext);
1.3 www 367: } else {
1.10 www 368: &viewmap($r,$adv,$errtext);
1.3 www 369: }
1.1 www 370: return OK;
371: }
372:
373: 1;
374: __END__
375:
376:
377:
378:
379:
380:
381:
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