Annotation of rat/lonpage.pm, revision 1.55
1.1 www 1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
1.55 ! www 4: # $Id: lonpage.pm,v 1.54 2003/10/21 20:40:10 albertel Exp $
1.29 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: #
1.30 harris41 30: # YEAR=2000
1.1 www 31: # 05/29/00,05/30 Gerd Kortemeyer)
1.10 www 32: # 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
1.24 www 33: # 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16,
1.30 harris41 34: # YEAR=2001
1.27 www 35: # 08/13/01,08/30,10/1 Gerd Kortemeyer
1.33 www 36: # YEAR=2002
37: # 03/19 Gerd Kortemeyer
1.30 harris41 38: #
39: ###
1.1 www 40:
41: package Apache::lonpage;
42:
43: use strict;
44: use Apache::Constants qw(:common :http);
45: use Apache::lonnet();
1.30 harris41 46: use Apache::loncommon();
1.21 www 47: use Apache::lonxml();
1.49 www 48: use Apache::lonmenu;
1.6 www 49: use HTML::TokeParser;
1.1 www 50: use GDBM_File;
1.39 www 51: use Apache::lonsequence;
1.1 www 52:
1.2 www 53: # -------------------------------------------------------------- Module Globals
54: my %hash;
55: my @rows;
1.6 www 56:
57: # ------------------------------------------------------------------ Euclid gcd
58:
59: sub euclid {
60: my ($e,$f)=@_;
61: my $a; my $b; my $r;
62: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
63: while ($r!=0) {
64: $a=$b; $b=$r;
65: $r=$a%$b;
66: }
67: return $b;
68: }
1.2 www 69:
70: # ------------------------------------------------------------ Build page table
71:
72: sub tracetable {
73: my ($sofar,$rid,$beenhere)=@_;
74: my $further=$sofar;
75: unless ($beenhere=~/\&$rid\&/) {
76: $beenhere.=$rid.'&';
77:
78: if (defined($hash{'is_map_'.$rid})) {
79: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
80: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
1.4 www 81: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
82: $sofar=
1.2 www 83: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
1.3 www 84: '&'.$frid.'&');
1.4 www 85: $sofar++;
86: if ($hash{'src_'.$frid}) {
1.3 www 87: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
88: if (($brepriv eq '2') || ($brepriv eq 'F')) {
89: if (defined($rows[$sofar])) {
90: $rows[$sofar].='&'.$frid;
91: } else {
92: $rows[$sofar]=$frid;
93: }
94: }
1.4 www 95: }
1.2 www 96: }
97: } else {
1.4 www 98: $sofar++;
99: if ($hash{'src_'.$rid}) {
1.3 www 100: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
101: if (($brepriv eq '2') || ($brepriv eq 'F')) {
102: if (defined($rows[$sofar])) {
1.2 www 103: $rows[$sofar].='&'.$rid;
1.3 www 104: } else {
1.2 www 105: $rows[$sofar]=$rid;
1.3 www 106: }
107: }
1.4 www 108: }
1.2 www 109: }
110:
111: if (defined($hash{'to_'.$rid})) {
1.11 www 112: my $mincond=1;
113: my $next='';
1.30 harris41 114: foreach (split(/\,/,$hash{'to_'.$rid})) {
1.11 www 115: my $thiscond=
116: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
117: if ($thiscond>=$mincond) {
118: if ($next) {
119: $next.=','.$_.':'.$thiscond;
120: } else {
121: $next=$_.':'.$thiscond;
122: }
123: if ($thiscond>$mincond) { $mincond=$thiscond; }
124: }
1.30 harris41 125: }
126: foreach (split(/\,/,$next)) {
1.11 www 127: my ($linkid,$condval)=split(/\:/,$_);
128: if ($condval>=$mincond) {
129: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
130: if ($now>$further) { $further=$now; }
131: }
1.30 harris41 132: }
1.11 www 133:
1.2 www 134: }
135: }
136: return $further;
137: }
138:
1.1 www 139: # ================================================================ Main Handler
140:
141: sub handler {
142: my $r=shift;
143:
1.3 www 144: # ------------------------------------------- Set document type for header only
1.1 www 145:
1.3 www 146: if ($r->header_only) {
147: if ($ENV{'browser.mathml'}) {
1.53 www 148: &Apache::loncommon::content_type($r,'text/xml');
1.3 www 149: } else {
1.53 www 150: &Apache::loncommon::content_type($r,'text/html');
1.3 www 151: }
152: $r->send_http_header;
153: return OK;
154: }
1.43 sakharuk 155:
1.39 www 156: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
157: ['forceselect','launch']);
1.43 sakharuk 158: my $number_of_columns = 1;
1.37 sakharuk 159: my $requrl=$r->uri;
160: my $target = $ENV{'form.grade_target'};
1.55 ! www 161: # &Apache::lonnet::logthis("Got a target of $target");
1.54 albertel 162: if ($target eq 'meta') {
163: &Apache::loncommon::content_type($r,'text/html');
164: $r->send_http_header;
165: return OK;
166: }
1.1 www 167: # ----------------------------------------------------------------- Tie db file
1.39 www 168: if (($ENV{'request.course.fn'}) && (!$ENV{'form.forceselect'})) {
1.1 www 169: my $fn=$ENV{'request.course.fn'};
170: if (-e "$fn.db") {
1.44 albertel 171: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
1.1 www 172: # ------------------------------------------------------------------- Hash tied
173: my $firstres=$hash{'map_start_'.$requrl};
174: my $lastres=$hash{'map_finish_'.$requrl};
175: if (($firstres) && ($lastres)) {
176: # ----------------------------------------------------------------- Render page
177:
1.3 www 178: @rows=();
1.2 www 179:
1.45 www 180: &tracetable(0,$firstres,'&');
1.2 www 181:
1.9 www 182: # ------------------------------------------------------------ Add to symb list
183:
1.2 www 184: my $i;
1.9 www 185: my %symbhash=();
186: for ($i=0;$i<=$#rows;$i++) {
187: if ($rows[$i]) {
188: my @colcont=split(/\&/,$rows[$i]);
1.30 harris41 189: foreach (@colcont) {
1.9 www 190: $symbhash{$hash{'src_'.$_}}='';
1.30 harris41 191: }
1.9 www 192: }
193: }
194: &Apache::lonnet::symblist($requrl,%symbhash);
195:
196: # ------------------------------------------------------------------ Page parms
197:
1.4 www 198: my $j;
1.6 www 199: my $lcm=1;
200: my $contents=0;
1.7 www 201: my $nforms=0;
1.6 www 202:
203: my %ssibody=();
204: my %ssibgcolor=();
205: my %ssitext=();
206: my %ssilink=();
207: my %ssivlink=();
208: my %ssialink=();
1.14 www 209:
210: my %metalink=();
211:
1.6 www 212: my %cellemb=();
1.3 www 213:
1.7 www 214: my $allscript='';
215: my $allmeta='';
216:
217: my $isxml=0;
218: my $xmlheader='';
219: my $xmlbody='';
220:
1.3 www 221: # --------------------------------------------- Get SSI output, post parameters
222:
1.2 www 223: for ($i=0;$i<=$#rows;$i++) {
1.4 www 224: if ($rows[$i]) {
1.6 www 225: $contents++;
1.3 www 226: my @colcont=split(/\&/,$rows[$i]);
1.6 www 227: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
1.30 harris41 228: foreach (@colcont) {
1.3 www 229: my $src=$hash{'src_'.$_};
1.5 www 230: $src=~/\.(\w+)$/;
1.14 www 231: $metalink{$_}=$src.'.meta';
1.30 harris41 232: $cellemb{$_}=Apache::loncommon::fileembstyle($1);
1.3 www 233: if ($cellemb{$_} eq 'ssi') {
234: # --------------------------------------------------------- This is an SSI cell
1.5 www 235: my $prefix=$_.'_';
236: my %posthash=('request.prefix' => $prefix);
1.8 www 237: if (($ENV{'form.'.$prefix.'submit'})
1.7 www 238: || ($ENV{'form.all_submit'})) {
1.30 harris41 239: foreach (keys %ENV) {
1.5 www 240: if ($_=~/^form.$prefix/) {
241: my $name=$_;
242: $name=~s/^form.$prefix//;
243: $posthash{$name}=$ENV{$_};
244: }
1.30 harris41 245: }
1.7 www 246: }
1.5 www 247: my $output=Apache::lonnet::ssi($src,%posthash);
1.50 www 248: $output=~
249: s/\/\/ BEGIN LON\-CAPA Internal.+\/\/ END LON\-CAPA Internal\s//gs;
1.46 sakharuk 250: if ($target eq 'tex') {
251: $output =~ s/^([^&]+)\\begin{document}//;
252: $output =~ s/\\end{document}//;
253: $output = '\parbox{\minipagewidth}{ '.$output.' }';
254: #some additional cleanup necessary for LateX (due to limitations of table environment
255: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
256: }
1.6 www 257: my $parser=HTML::TokeParser->new(\$output);
258: my $token;
1.12 www 259: my $thisdir=$src;
1.6 www 260: my $bodydef=0;
1.7 www 261: my $thisxml=0;
1.12 www 262: my @rlinks=();
1.7 www 263: if ($output=~/\?xml/) {
264: $isxml=1;
265: $thisxml=1;
266: $output=~
267: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
268: $xmlheader=$1;
269: }
1.12 www 270: while ($token=$parser->get_token) {
271: if ($token->[0] eq 'S') {
272: if ($token->[1] eq 'a') {
273: if ($token->[2]->{'href'}) {
274: $rlinks[$#rlinks+1]=
275: $token->[2]->{'href'};
276: }
277: } elsif ($token->[1] eq 'img') {
278: $rlinks[$#rlinks+1]=
279: $token->[2]->{'src'};
280: } elsif ($token->[1] eq 'embed') {
281: $rlinks[$#rlinks+1]=
282: $token->[2]->{'src'};
283: } elsif ($token->[1] eq 'base') {
284: $thisdir=$token->[2]->{'href'};
285: } elsif ($token->[1] eq 'body') {
1.7 www 286: $bodydef=1;
287: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
288: $ssitext{$_}=$token->[2]->{'text'};
289: $ssilink{$_}=$token->[2]->{'link'};
290: $ssivlink{$_}=$token->[2]->{'vlink'};
291: $ssialink{$_}=$token->[2]->{'alink'};
292: if ($thisxml) {
293: $xmlbody=$token->[4];
294: }
1.12 www 295: } elsif ($token->[1] eq 'meta') {
1.28 albertel 296: if ($token->[4] !~ m:/>$:) {
1.7 www 297: $allmeta.="\n".$token->[4].'</meta>';
1.28 albertel 298: } else {
299: $allmeta.="\n".$token->[4];
300: }
1.12 www 301: } elsif (($token->[1] eq 'script') &&
302: ($bodydef==0)) {
1.7 www 303: $allscript.="\n\n"
304: .$parser->get_text('/script');
1.6 www 305: }
1.12 www 306: }
307: }
1.6 www 308: if ($output=~/\<body[^\>]*\>(.*)/si) {
309: $output=$1;
310: }
311: $output=~s/\<\/body\>.*//si;
1.7 www 312: if ($output=~/\<form/si) {
313: $nforms++;
314: $output=~s/\<form[^\>]*\>//gsi;
315: $output=~s/\<\/form[^\>]*\>//gsi;
1.17 www 316: $output=~
1.18 www 317: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([\w\.\:]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
1.7 www 318: }
1.12 www 319: $thisdir=~s/\/[^\/]*$//;
1.30 harris41 320: foreach (@rlinks) {
1.12 www 321: unless (($_=~/^http:\/\//i) ||
1.31 albertel 322: ($_=~/^\//) ||
323: ($_=~/^javascript:/i) ||
324: ($_=~/^mailto:/i) ||
325: ($_=~/^\#/)) {
1.12 www 326: my $newlocation=
327: &Apache::lonnet::hreflocation($thisdir,$_);
328: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
329: }
1.30 harris41 330: }
1.24 www 331: # -------------------------------------------------- Deal with Applet codebases
332: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
1.5 www 333: $ssibody{$_}=$output;
1.3 www 334: # ---------------------------------------------------------------- End SSI cell
335: }
1.30 harris41 336: }
1.4 www 337: }
1.2 www 338: }
1.6 www 339: unless ($contents) {
1.53 www 340: &Apache::loncommon::content_type($r,'text/html');
1.3 www 341: $r->send_http_header;
1.53 www 342: $r->print('<html><body>'.&mt('Empty page').'.</body></html>');
1.3 www 343: } else {
344: # ------------------------------------------------------------------ Build page
1.7 www 345:
346: # ---------------------------------------------------------------- Send headers
1.37 sakharuk 347: unless ($target eq 'tex') {
348: if ($isxml) {
1.53 www 349: &Apache::loncommon::content_type($r,'text/xml');
1.37 sakharuk 350: $r->send_http_header;
351: $r->print($xmlheader);
352: } else {
1.53 www 353: &Apache::loncommon::content_type($r,'text/html');
1.37 sakharuk 354: $r->send_http_header;
355: $r->print('<html>');
356: }
1.7 www 357: # ------------------------------------------------------------------------ Head
1.37 sakharuk 358: $r->print("\n<head>\n".$allmeta);
359: if ($allscript) {
360: $r->print("\n<script language='JavaScript'>\n".
361: $allscript."\n</script>\n");
362: }
1.49 www 363: $r->print(&Apache::lonmenu::registerurl(1,undef));
1.37 sakharuk 364: $r->print("\n</head>\n");
1.7 www 365: # ------------------------------------------------------------------ Start body
1.37 sakharuk 366: if ($isxml) {
367: $r->print($xmlbody);
368: } else {
1.51 www 369: $r->print(
370: '<body bgcolor="#FFFFFF" onLoad="'.&Apache::lonmenu::loadevents.
371: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
372: &Apache::lonmenu::menubuttons(undef,$target,1)
373: );
1.37 sakharuk 374: }
1.7 www 375: # ------------------------------------------------------------------ Start form
1.37 sakharuk 376: if ($nforms) {
377: $r->print('<form method="post" action="'.
378: $requrl.'">');
1.40 sakharuk 379: }
380: } else {
1.47 sakharuk 381: $r->print('\documentclass{article}
1.40 sakharuk 382: \newcommand{\keephidden}[1]{}
383: \usepackage[dvips]{graphicx}
384: \usepackage{epsfig}
385: \usepackage{calc}
1.42 sakharuk 386: \usepackage{longtable}
1.40 sakharuk 387: \begin{document}');
388: }
1.7 www 389: # ----------------------------------------------------------------- Start table
1.40 sakharuk 390: if ($target eq 'tex') {
1.42 sakharuk 391: $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
1.43 sakharuk 392: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
1.40 sakharuk 393: } else {
1.37 sakharuk 394: $r->print('<table cols="'.$lcm.'" border="0">');
395: }
1.5 www 396: for ($i=0;$i<=$#rows;$i++) {
397: if ($rows[$i]) {
1.37 sakharuk 398: unless ($target eq 'tex') {
399: $r->print("\n<tr>");
400: }
1.4 www 401: my @colcont=split(/\&/,$rows[$i]);
1.6 www 402: my $avespan=$lcm/($#colcont+1);
403: for ($j=0;$j<=$#colcont;$j++) {
404: my $rid=$colcont[$j];
1.55 ! www 405: my $metainfo='<a name="'.
! 406: &Apache::lonnet::escape(&Apache::lonnet::declutter($hash{'src_'.$rid})).'" />'.
! 407: '<a href="'.
1.23 www 408: $metalink{$rid}.'" target="LONcatInfo">'.
409: '<img src="/adm/lonMisc/cat_button.gif" border=0>'.
1.34 www 410: '</img></a><a href="/adm/evaluate?postdata='.
1.35 www 411: &Apache::lonnet::escape(&Apache::lonnet::declutter($hash{'src_'.$rid}))
412: .'" target="LONcatInfo">'.
1.33 www 413: '<img src="/adm/lonMisc/eval_button.gif" border=0>'.
414: '</img></a>';
1.27 www 415: if (
416: ($hash{'src_'.$rid}=~/\.(problem|exam|quiz|assess|survey|form)$/) &&
417: (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}))) {
418: my ($mapid,$resid)=split(/\./,$rid);
419: my $symb=
420: &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
421: '___'.$resid.'___'.
422: &Apache::lonnet::declutter($hash{'src_'.$rid});
423: $metainfo.=
1.36 www 424: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
1.52 ng 425: # '&command=submission" target="LONcatInfo">'.
426: '&command=submission">'.
1.27 www 427: '<img src="/adm/lonMisc/subm_button.gif" border=0>'.
428: '</img></a>'.
1.36 www 429: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
1.52 ng 430: # '&command=gradingmenu" target="LONcatInfo">'.
431: '&command=gradingmenu">'.
1.27 www 432: '<img src="/adm/lonMisc/pgrd_button.gif" border=0>'.
433: '</img></a>'.
1.36 www 434: '<a href="/adm/parmset?symb='.&Apache::lonnet::escape($symb).
1.52 ng 435: # '" target="LONcatInfo">'.
436: '" >'.
1.27 www 437: '<img src="/adm/lonMisc/pprm_button.gif" border=0>'.
438: '</img></a>';
439: }
440: $metainfo.='<br></br>';
1.37 sakharuk 441: unless ($target eq 'tex') {
442: $r->print('<td colspan="'.$avespan.'"');
443: }
1.6 www 444: if ($cellemb{$rid} eq 'ssi') {
1.37 sakharuk 445: unless ($target eq 'tex') {
446: if ($ssibgcolor{$rid}) {
447: $r->print(' bgcolor="'.
448: $ssibgcolor{$rid}.'"');
449: }
450: $r->print('>'.$metainfo.'<font');
451:
452: if ($ssitext{$rid}) {
453: $r->print(' text="'.$ssitext{$rid}.'"');
454: }
455: if ($ssilink{$rid}) {
456: $r->print(' link="'.$ssilink{$rid}.'"');
457: }
458: if ($ssitext{$rid}) {
459: $r->print(' vlink="'.$ssivlink{$rid}.'"');
460: }
461: if ($ssialink{$rid}) {
462: $r->print(' alink="'.$ssialink{$rid}.'"');
463: }
464: $r->print('>');
465: }
466: $r->print($ssibody{$rid});
467: unless ($target eq 'tex') {
468: $r->print('</font>');
1.41 www 469: }
470: if ($ENV{'course.'.
471: $ENV{'request.course.id'}.
472: '.pageseparators'} eq 'yes') {
473: unless($target eq 'tex') {
474: $r->print('<hr />');
475: } else {
476: $r->print('\hline');
477: }
1.37 sakharuk 478: }
479: } elsif ($cellemb{$rid} eq 'img') {
1.14 www 480: $r->print('>'.$metainfo.'<img src="'.
1.7 www 481: $hash{'src_'.$rid}.'"></img>');
1.13 www 482: } elsif ($cellemb{$rid} eq 'emb') {
1.14 www 483: $r->print('>'.$metainfo.'<embed src="'.
1.13 www 484: $hash{'src_'.$rid}.'"></embed>');
485: }
1.37 sakharuk 486: unless ($target eq 'tex') {
487: $r->print('</td>');
1.40 sakharuk 488: } else {
1.43 sakharuk 489: for (my $incol=1;$incol<=$avespan;$incol++) {
490: $r->print(' & ');
491: }
1.37 sakharuk 492: }
1.4 www 493: }
1.37 sakharuk 494: unless ($target eq 'tex') {
495: $r->print('</tr>');
1.40 sakharuk 496: } else {
1.42 sakharuk 497: $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
1.37 sakharuk 498: }
1.5 www 499: }
1.4 www 500: }
1.37 sakharuk 501: unless ($target eq 'tex') {
502: $r->print("\n</table>");
1.40 sakharuk 503: } else {
1.47 sakharuk 504: $r->print('\end{longtable}\strut');
1.37 sakharuk 505: }
1.7 www 506: # ---------------------------------------------------------------- Submit, etc.
507: if ($nforms) {
508: $r->print(
509: '<input name="all_submit" value="Submit All" type="'.
510: (($nforms>1)?'submit':'hidden').'"></input></form>');
511: }
1.40 sakharuk 512: unless ($target eq 'tex') {
513: $r->print('</body>'.&Apache::lonxml::xmlend());
514: } else {
515: $r->print('\end{document}'.$number_of_columns);
516: }
1.3 www 517: # -------------------------------------------------------------------- End page
518: }
1.1 www 519: # ------------------------------------------------------------- End render page
520: } else {
1.3 www 521: $r->content_type('text/html');
522: $r->send_http_header;
1.39 www 523: &Apache::lonsequence::viewmap($r,$requrl);
1.1 www 524: }
525: # ------------------------------------------------------------------ Untie hash
526: unless (untie(%hash)) {
527: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
528: "Could not untie coursemap $fn (browse).</font>");
529: }
530: # -------------------------------------------------------------------- All done
531: return OK;
532: # ----------------------------------------------- Errors, hash could no be tied
533: }
534: }
535: }
1.39 www 536: $r->content_type('text/html');
537: $r->send_http_header;
538: &Apache::lonsequence::viewmap($r,$requrl);
539: return OK;
1.1 www 540: }
541:
542: 1;
543: __END__
544:
1.30 harris41 545: =head1 NAME
546:
547: Apache::lonpage - Page Handler
548:
549: =head1 SYNOPSIS
550:
551: Invoked by /etc/httpd/conf/srm.conf:
552:
553: <LocationMatch "^/res/.*\.page$>
554: SetHandler perl-script
555: PerlHandler Apache::lonpage
556: </LocationMatch>
557:
558: =head1 INTRODUCTION
559:
560: This module renders a .page resource.
561:
562: This is part of the LearningOnline Network with CAPA project
563: described at http://www.lon-capa.org.
564:
565: =head1 HANDLER SUBROUTINE
566:
567: This routine is called by Apache and mod_perl.
568:
569: =over 4
570:
571: =item *
572:
573: set document type for header only
574:
575: =item *
576:
577: tie db file
578:
579: =item *
580:
581: render page
582:
583: =item *
584:
585: add to symb list
586:
587: =item *
588:
589: page parms
590:
591: =item *
592:
593: Get SSI output, post parameters
594:
595: =item *
596:
597: SSI cell rendering
598:
599: =item *
600:
601: Deal with Applet codebases
602:
603: =item *
604:
605: Build page
606:
607: =item *
608:
609: send headers
610:
611: =item *
612:
613: start body
614:
615: =item *
616:
617: start form
618:
619: =item *
620:
621: start table
622:
623: =item *
624:
625: submit element, etc, render page, untie hash
626:
627: =back
628:
629: =head1 OTHER SUBROUTINES
630:
631: =over 4
632:
633: =item *
634:
635: euclid() : Euclid's method for determining the greatest common denominator.
636:
637: =item *
638:
639: tracetable() : Build page table.
1.1 www 640:
1.30 harris41 641: =back
1.1 www 642:
1.30 harris41 643: =cut
1.1 www 644:
645:
646:
647:
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