Annotation of rat/lonpage.pm, revision 1.65
1.1 www 1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
1.65 ! albertel 4: # $Id: lonpage.pm,v 1.64 2004/12/10 19:59:55 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();
1.57 raeburn 48: use Apache::lonlocal;
1.49 www 49: use Apache::lonmenu;
1.6 www 50: use HTML::TokeParser;
1.1 www 51: use GDBM_File;
1.39 www 52: use Apache::lonsequence;
1.1 www 53:
1.2 www 54: # -------------------------------------------------------------- Module Globals
55: my %hash;
56: my @rows;
1.6 www 57:
58: # ------------------------------------------------------------------ Euclid gcd
59:
60: sub euclid {
61: my ($e,$f)=@_;
62: my $a; my $b; my $r;
63: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
64: while ($r!=0) {
65: $a=$b; $b=$r;
66: $r=$a%$b;
67: }
68: return $b;
69: }
1.2 www 70:
71: # ------------------------------------------------------------ Build page table
72:
73: sub tracetable {
74: my ($sofar,$rid,$beenhere)=@_;
75: my $further=$sofar;
1.57 raeburn 76: my $randomout=0;
1.58 raeburn 77: unless ($ENV{'request.role.adv'}) {
1.57 raeburn 78: $randomout = $hash{'randomout_'.$rid};
79: }
1.2 www 80: unless ($beenhere=~/\&$rid\&/) {
1.57 raeburn 81: $beenhere.=$rid.'&';
82: unless ($randomout) {
83: if (defined($hash{'is_map_'.$rid})) {
84: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
85: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
86: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
87: $sofar=
88: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
89: '&'.$frid.'&');
90: $sofar++;
91: if ($hash{'src_'.$frid}) {
92: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
93: if (($brepriv eq '2') || ($brepriv eq 'F')) {
94: if (defined($rows[$sofar])) {
95: $rows[$sofar].='&'.$frid;
96: } else {
97: $rows[$sofar]=$frid;
98: }
99: }
100: }
101: }
102: } else {
103: $sofar++;
104: if ($hash{'src_'.$rid}) {
105: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
106: if (($brepriv eq '2') || ($brepriv eq 'F')) {
107: if (defined($rows[$sofar])) {
108: $rows[$sofar].='&'.$rid;
109: } else {
110: $rows[$sofar]=$rid;
111: }
112: }
113: }
114: }
115: }
116:
117: if (defined($hash{'to_'.$rid})) {
118: my $mincond=1;
119: my $next='';
120: foreach (split(/\,/,$hash{'to_'.$rid})) {
121: my $thiscond=
1.11 www 122: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
1.57 raeburn 123: if ($thiscond>=$mincond) {
124: if ($next) {
125: $next.=','.$_.':'.$thiscond;
126: } else {
127: $next=$_.':'.$thiscond;
128: }
129: if ($thiscond>$mincond) { $mincond=$thiscond; }
130: }
131: }
132: foreach (split(/\,/,$next)) {
133: my ($linkid,$condval)=split(/\:/,$_);
134: if ($condval>=$mincond) {
135: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
136: if ($now>$further) { $further=$now; }
137: }
138: }
139: }
1.2 www 140: }
141: return $further;
142: }
143:
1.1 www 144: # ================================================================ Main Handler
145:
146: sub handler {
147: my $r=shift;
148:
1.3 www 149: # ------------------------------------------- Set document type for header only
1.1 www 150:
1.3 www 151: if ($r->header_only) {
152: if ($ENV{'browser.mathml'}) {
1.53 www 153: &Apache::loncommon::content_type($r,'text/xml');
1.3 www 154: } else {
1.53 www 155: &Apache::loncommon::content_type($r,'text/html');
1.3 www 156: }
157: $r->send_http_header;
158: return OK;
159: }
1.43 sakharuk 160:
1.39 www 161: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
162: ['forceselect','launch']);
1.43 sakharuk 163: my $number_of_columns = 1;
1.37 sakharuk 164: my $requrl=$r->uri;
165: my $target = $ENV{'form.grade_target'};
1.55 www 166: # &Apache::lonnet::logthis("Got a target of $target");
1.54 albertel 167: if ($target eq 'meta') {
168: &Apache::loncommon::content_type($r,'text/html');
169: $r->send_http_header;
170: return OK;
171: }
1.1 www 172: # ----------------------------------------------------------------- Tie db file
1.39 www 173: if (($ENV{'request.course.fn'}) && (!$ENV{'form.forceselect'})) {
1.1 www 174: my $fn=$ENV{'request.course.fn'};
175: if (-e "$fn.db") {
1.44 albertel 176: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
1.1 www 177: # ------------------------------------------------------------------- Hash tied
178: my $firstres=$hash{'map_start_'.$requrl};
179: my $lastres=$hash{'map_finish_'.$requrl};
180: if (($firstres) && ($lastres)) {
181: # ----------------------------------------------------------------- Render page
182:
1.3 www 183: @rows=();
1.2 www 184:
1.45 www 185: &tracetable(0,$firstres,'&');
1.2 www 186:
1.9 www 187: # ------------------------------------------------------------ Add to symb list
188:
1.2 www 189: my $i;
1.9 www 190: my %symbhash=();
191: for ($i=0;$i<=$#rows;$i++) {
192: if ($rows[$i]) {
193: my @colcont=split(/\&/,$rows[$i]);
1.30 harris41 194: foreach (@colcont) {
1.9 www 195: $symbhash{$hash{'src_'.$_}}='';
1.30 harris41 196: }
1.9 www 197: }
198: }
199: &Apache::lonnet::symblist($requrl,%symbhash);
200:
201: # ------------------------------------------------------------------ Page parms
202:
1.4 www 203: my $j;
1.6 www 204: my $lcm=1;
205: my $contents=0;
1.7 www 206: my $nforms=0;
1.6 www 207:
208: my %ssibody=();
209: my %ssibgcolor=();
210: my %ssitext=();
211: my %ssilink=();
212: my %ssivlink=();
213: my %ssialink=();
1.14 www 214:
215: my %metalink=();
216:
1.6 www 217: my %cellemb=();
1.3 www 218:
1.7 www 219: my $allscript='';
220: my $allmeta='';
221:
222: my $isxml=0;
223: my $xmlheader='';
224: my $xmlbody='';
225:
1.3 www 226: # --------------------------------------------- Get SSI output, post parameters
227:
1.2 www 228: for ($i=0;$i<=$#rows;$i++) {
1.4 www 229: if ($rows[$i]) {
1.6 www 230: $contents++;
1.3 www 231: my @colcont=split(/\&/,$rows[$i]);
1.6 www 232: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
1.30 harris41 233: foreach (@colcont) {
1.3 www 234: my $src=$hash{'src_'.$_};
1.61 albertel 235: my ($extension)=($src=~/\.(\w+)$/);
236: if ($hash{'encrypted_'.$_}) {
237: $src=&Apache::lonenc::encrypted($src);
238: }
1.14 www 239: $metalink{$_}=$src.'.meta';
1.61 albertel 240: $cellemb{$_}=
241: &Apache::loncommon::fileembstyle($extension);
1.3 www 242: if ($cellemb{$_} eq 'ssi') {
243: # --------------------------------------------------------- This is an SSI cell
1.64 albertel 244: my ($mapid,$resid)=split(/\./,$_);
245: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
246:
1.5 www 247: my $prefix=$_.'_';
1.64 albertel 248: my %posthash=('request.prefix' => $prefix,
249: 'symb' => $symb);
1.56 sakharuk 250: if ($ENV{'form.grade_target'} eq 'tex') {
251: $posthash{'grade_target'}=$ENV{'form.grade_target'};
252: $posthash{'textwidth'}=$ENV{'form.textwidth'};
253: $posthash{'problem_split'}=$ENV{'form.problem_split'};
254: $posthash{'latex_type'}=$ENV{'form.latex_type'};
255: $posthash{'rndseed'}=$ENV{'form.rndseed'};
256: }
1.8 www 257: if (($ENV{'form.'.$prefix.'submit'})
1.7 www 258: || ($ENV{'form.all_submit'})) {
1.30 harris41 259: foreach (keys %ENV) {
1.5 www 260: if ($_=~/^form.$prefix/) {
261: my $name=$_;
262: $name=~s/^form.$prefix//;
263: $posthash{$name}=$ENV{$_};
264: }
1.30 harris41 265: }
1.7 www 266: }
1.5 www 267: my $output=Apache::lonnet::ssi($src,%posthash);
1.61 albertel 268: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
1.46 sakharuk 269: if ($target eq 'tex') {
270: $output =~ s/^([^&]+)\\begin{document}//;
271: $output =~ s/\\end{document}//;
272: $output = '\parbox{\minipagewidth}{ '.$output.' }';
273: #some additional cleanup necessary for LateX (due to limitations of table environment
274: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
275: }
1.6 www 276: my $parser=HTML::TokeParser->new(\$output);
277: my $token;
1.12 www 278: my $thisdir=$src;
1.6 www 279: my $bodydef=0;
1.7 www 280: my $thisxml=0;
1.12 www 281: my @rlinks=();
1.7 www 282: if ($output=~/\?xml/) {
283: $isxml=1;
284: $thisxml=1;
285: $output=~
286: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
287: $xmlheader=$1;
288: }
1.12 www 289: while ($token=$parser->get_token) {
290: if ($token->[0] eq 'S') {
291: if ($token->[1] eq 'a') {
292: if ($token->[2]->{'href'}) {
293: $rlinks[$#rlinks+1]=
294: $token->[2]->{'href'};
295: }
296: } elsif ($token->[1] eq 'img') {
297: $rlinks[$#rlinks+1]=
298: $token->[2]->{'src'};
299: } elsif ($token->[1] eq 'embed') {
300: $rlinks[$#rlinks+1]=
301: $token->[2]->{'src'};
302: } elsif ($token->[1] eq 'base') {
303: $thisdir=$token->[2]->{'href'};
304: } elsif ($token->[1] eq 'body') {
1.7 www 305: $bodydef=1;
306: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
307: $ssitext{$_}=$token->[2]->{'text'};
308: $ssilink{$_}=$token->[2]->{'link'};
309: $ssivlink{$_}=$token->[2]->{'vlink'};
310: $ssialink{$_}=$token->[2]->{'alink'};
311: if ($thisxml) {
312: $xmlbody=$token->[4];
313: }
1.12 www 314: } elsif ($token->[1] eq 'meta') {
1.28 albertel 315: if ($token->[4] !~ m:/>$:) {
1.7 www 316: $allmeta.="\n".$token->[4].'</meta>';
1.28 albertel 317: } else {
318: $allmeta.="\n".$token->[4];
319: }
1.12 www 320: } elsif (($token->[1] eq 'script') &&
321: ($bodydef==0)) {
1.7 www 322: $allscript.="\n\n"
323: .$parser->get_text('/script');
1.6 www 324: }
1.12 www 325: }
326: }
1.6 www 327: if ($output=~/\<body[^\>]*\>(.*)/si) {
328: $output=$1;
329: }
330: $output=~s/\<\/body\>.*//si;
1.7 www 331: if ($output=~/\<form/si) {
332: $nforms++;
333: $output=~s/\<form[^\>]*\>//gsi;
334: $output=~s/\<\/form[^\>]*\>//gsi;
1.17 www 335: $output=~
1.18 www 336: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([\w\.\:]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
1.7 www 337: }
1.12 www 338: $thisdir=~s/\/[^\/]*$//;
1.30 harris41 339: foreach (@rlinks) {
1.12 www 340: unless (($_=~/^http:\/\//i) ||
1.31 albertel 341: ($_=~/^\//) ||
342: ($_=~/^javascript:/i) ||
343: ($_=~/^mailto:/i) ||
344: ($_=~/^\#/)) {
1.12 www 345: my $newlocation=
346: &Apache::lonnet::hreflocation($thisdir,$_);
347: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
348: }
1.30 harris41 349: }
1.24 www 350: # -------------------------------------------------- Deal with Applet codebases
351: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
1.5 www 352: $ssibody{$_}=$output;
1.3 www 353: # ---------------------------------------------------------------- End SSI cell
354: }
1.30 harris41 355: }
1.4 www 356: }
1.2 www 357: }
1.6 www 358: unless ($contents) {
1.53 www 359: &Apache::loncommon::content_type($r,'text/html');
1.3 www 360: $r->send_http_header;
1.59 raeburn 361: $r->print('<html>'."\n".
362: '<head>'."\n".
363: &Apache::lonmenu::registerurl(1,undef)."\n".
364: '</head>'."\n".
365: '<body bgcolor="#FFFFFF" onLoad="'
366: .&Apache::lonmenu::loadevents.
367: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
368: &Apache::lonmenu::menubuttons(undef,$target,1)
369: );
370: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
371: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').'.</body></html>');
1.3 www 372: } else {
373: # ------------------------------------------------------------------ Build page
1.7 www 374:
375: # ---------------------------------------------------------------- Send headers
1.37 sakharuk 376: unless ($target eq 'tex') {
377: if ($isxml) {
1.53 www 378: &Apache::loncommon::content_type($r,'text/xml');
1.37 sakharuk 379: $r->send_http_header;
380: $r->print($xmlheader);
381: } else {
1.53 www 382: &Apache::loncommon::content_type($r,'text/html');
1.37 sakharuk 383: $r->send_http_header;
384: $r->print('<html>');
385: }
1.7 www 386: # ------------------------------------------------------------------------ Head
1.37 sakharuk 387: $r->print("\n<head>\n".$allmeta);
388: if ($allscript) {
389: $r->print("\n<script language='JavaScript'>\n".
390: $allscript."\n</script>\n");
391: }
1.49 www 392: $r->print(&Apache::lonmenu::registerurl(1,undef));
1.37 sakharuk 393: $r->print("\n</head>\n");
1.7 www 394: # ------------------------------------------------------------------ Start body
1.37 sakharuk 395: if ($isxml) {
396: $r->print($xmlbody);
397: } else {
1.51 www 398: $r->print(
399: '<body bgcolor="#FFFFFF" onLoad="'.&Apache::lonmenu::loadevents.
400: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
401: &Apache::lonmenu::menubuttons(undef,$target,1)
402: );
1.37 sakharuk 403: }
1.7 www 404: # ------------------------------------------------------------------ Start form
1.37 sakharuk 405: if ($nforms) {
406: $r->print('<form method="post" action="'.
1.61 albertel 407: &Apache::lonenc::check_encrypt($requrl)
408: .'">');
1.40 sakharuk 409: }
1.56 sakharuk 410: } elsif ($target eq 'tex') {
1.47 sakharuk 411: $r->print('\documentclass{article}
1.40 sakharuk 412: \newcommand{\keephidden}[1]{}
413: \usepackage[dvips]{graphicx}
414: \usepackage{epsfig}
415: \usepackage{calc}
1.42 sakharuk 416: \usepackage{longtable}
1.40 sakharuk 417: \begin{document}');
418: }
1.7 www 419: # ----------------------------------------------------------------- Start table
1.40 sakharuk 420: if ($target eq 'tex') {
1.42 sakharuk 421: $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
1.43 sakharuk 422: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
1.40 sakharuk 423: } else {
1.63 albertel 424: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
1.37 sakharuk 425: }
1.5 www 426: for ($i=0;$i<=$#rows;$i++) {
427: if ($rows[$i]) {
1.37 sakharuk 428: unless ($target eq 'tex') {
429: $r->print("\n<tr>");
430: }
1.4 www 431: my @colcont=split(/\&/,$rows[$i]);
1.6 www 432: my $avespan=$lcm/($#colcont+1);
433: for ($j=0;$j<=$#colcont;$j++) {
434: my $rid=$colcont[$j];
1.60 raeburn 435: my $metainfo = '';
1.62 albertel 436: my $esrc=&Apache::lonnet::declutter($hash{'src_'.$rid});
1.65 ! albertel 437: my ($mapid,$resid)=split(/\./,$rid);
! 438: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$rid});
1.62 albertel 439: if ($hash{'encrypted_'.$rid}) {
1.65 ! albertel 440: $symb=&Apache::lonenc::encrypted($symb);
1.62 albertel 441: $esrc=&Apache::lonenc::encrypted($esrc);
442: }
1.60 raeburn 443: unless ($hash{'src_'.$rid} =~ m-^/uploaded/-) {
1.65 ! albertel 444: $metainfo ='<a name="'.&Apache::lonnet::escape($symb).'" />'.
1.60 raeburn 445: '<a href="'.$metalink{$rid}.'" target="LONcatInfo">'.
446: '<img src="/adm/lonMisc/cat_button.gif" border=0>'.
447: '</img></a>';
448: }
449: $metainfo .= '<a href="/adm/evaluate?postdata='.
1.62 albertel 450: &Apache::lonnet::escape($esrc).
1.60 raeburn 451: '" target="LONcatInfo">'.
452: '<img src="/adm/lonMisc/eval_button.gif" border=0>'.
453: '</img></a>';
1.27 www 454: if (
455: ($hash{'src_'.$rid}=~/\.(problem|exam|quiz|assess|survey|form)$/) &&
1.60 raeburn 456: (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) &&
457: ($hash{'src_'.$rid} !~ m-^/uploaded/-)) {
1.27 www 458: my ($mapid,$resid)=split(/\./,$rid);
459: my $symb=
460: &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
461: '___'.$resid.'___'.
462: &Apache::lonnet::declutter($hash{'src_'.$rid});
463: $metainfo.=
1.36 www 464: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
1.52 ng 465: # '&command=submission" target="LONcatInfo">'.
466: '&command=submission">'.
1.27 www 467: '<img src="/adm/lonMisc/subm_button.gif" border=0>'.
468: '</img></a>'.
1.36 www 469: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
1.52 ng 470: # '&command=gradingmenu" target="LONcatInfo">'.
471: '&command=gradingmenu">'.
1.27 www 472: '<img src="/adm/lonMisc/pgrd_button.gif" border=0>'.
473: '</img></a>'.
1.36 www 474: '<a href="/adm/parmset?symb='.&Apache::lonnet::escape($symb).
1.52 ng 475: # '" target="LONcatInfo">'.
476: '" >'.
1.27 www 477: '<img src="/adm/lonMisc/pprm_button.gif" border=0>'.
478: '</img></a>';
479: }
480: $metainfo.='<br></br>';
1.37 sakharuk 481: unless ($target eq 'tex') {
482: $r->print('<td colspan="'.$avespan.'"');
483: }
1.6 www 484: if ($cellemb{$rid} eq 'ssi') {
1.37 sakharuk 485: unless ($target eq 'tex') {
486: if ($ssibgcolor{$rid}) {
487: $r->print(' bgcolor="'.
488: $ssibgcolor{$rid}.'"');
489: }
490: $r->print('>'.$metainfo.'<font');
491:
492: if ($ssitext{$rid}) {
493: $r->print(' text="'.$ssitext{$rid}.'"');
494: }
495: if ($ssilink{$rid}) {
496: $r->print(' link="'.$ssilink{$rid}.'"');
497: }
498: if ($ssitext{$rid}) {
499: $r->print(' vlink="'.$ssivlink{$rid}.'"');
500: }
501: if ($ssialink{$rid}) {
502: $r->print(' alink="'.$ssialink{$rid}.'"');
503: }
504: $r->print('>');
505: }
506: $r->print($ssibody{$rid});
507: unless ($target eq 'tex') {
508: $r->print('</font>');
1.41 www 509: }
510: if ($ENV{'course.'.
511: $ENV{'request.course.id'}.
512: '.pageseparators'} eq 'yes') {
513: unless($target eq 'tex') {
514: $r->print('<hr />');
515: } else {
516: $r->print('\hline');
517: }
1.37 sakharuk 518: }
519: } elsif ($cellemb{$rid} eq 'img') {
1.14 www 520: $r->print('>'.$metainfo.'<img src="'.
1.7 www 521: $hash{'src_'.$rid}.'"></img>');
1.13 www 522: } elsif ($cellemb{$rid} eq 'emb') {
1.14 www 523: $r->print('>'.$metainfo.'<embed src="'.
1.13 www 524: $hash{'src_'.$rid}.'"></embed>');
1.60 raeburn 525: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
526: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'.
527: &mt('It is recommended that you use an up-to-date virus scanner before handling this file.').'</p><p><table>'.
528: &Apache::londocs::entryline(0,&mt("Click to download or use your browser's Save Link function"),'/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).'</table></p><br />');
1.13 www 529: }
1.37 sakharuk 530: unless ($target eq 'tex') {
531: $r->print('</td>');
1.40 sakharuk 532: } else {
1.43 sakharuk 533: for (my $incol=1;$incol<=$avespan;$incol++) {
534: $r->print(' & ');
535: }
1.37 sakharuk 536: }
1.4 www 537: }
1.37 sakharuk 538: unless ($target eq 'tex') {
539: $r->print('</tr>');
1.40 sakharuk 540: } else {
1.42 sakharuk 541: $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
1.37 sakharuk 542: }
1.5 www 543: }
1.4 www 544: }
1.37 sakharuk 545: unless ($target eq 'tex') {
546: $r->print("\n</table>");
1.40 sakharuk 547: } else {
1.47 sakharuk 548: $r->print('\end{longtable}\strut');
1.37 sakharuk 549: }
1.7 www 550: # ---------------------------------------------------------------- Submit, etc.
551: if ($nforms) {
552: $r->print(
553: '<input name="all_submit" value="Submit All" type="'.
554: (($nforms>1)?'submit':'hidden').'"></input></form>');
555: }
1.40 sakharuk 556: unless ($target eq 'tex') {
557: $r->print('</body>'.&Apache::lonxml::xmlend());
558: } else {
559: $r->print('\end{document}'.$number_of_columns);
560: }
1.3 www 561: # -------------------------------------------------------------------- End page
562: }
1.1 www 563: # ------------------------------------------------------------- End render page
564: } else {
1.3 www 565: $r->content_type('text/html');
566: $r->send_http_header;
1.39 www 567: &Apache::lonsequence::viewmap($r,$requrl);
1.1 www 568: }
569: # ------------------------------------------------------------------ Untie hash
570: unless (untie(%hash)) {
571: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
572: "Could not untie coursemap $fn (browse).</font>");
573: }
574: # -------------------------------------------------------------------- All done
575: return OK;
576: # ----------------------------------------------- Errors, hash could no be tied
577: }
578: }
579: }
1.39 www 580: $r->content_type('text/html');
581: $r->send_http_header;
582: &Apache::lonsequence::viewmap($r,$requrl);
583: return OK;
1.1 www 584: }
585:
586: 1;
587: __END__
588:
1.30 harris41 589: =head1 NAME
590:
591: Apache::lonpage - Page Handler
592:
593: =head1 SYNOPSIS
594:
595: Invoked by /etc/httpd/conf/srm.conf:
596:
597: <LocationMatch "^/res/.*\.page$>
598: SetHandler perl-script
599: PerlHandler Apache::lonpage
600: </LocationMatch>
601:
602: =head1 INTRODUCTION
603:
604: This module renders a .page resource.
605:
606: This is part of the LearningOnline Network with CAPA project
607: described at http://www.lon-capa.org.
608:
609: =head1 HANDLER SUBROUTINE
610:
611: This routine is called by Apache and mod_perl.
612:
613: =over 4
614:
615: =item *
616:
617: set document type for header only
618:
619: =item *
620:
621: tie db file
622:
623: =item *
624:
625: render page
626:
627: =item *
628:
629: add to symb list
630:
631: =item *
632:
633: page parms
634:
635: =item *
636:
637: Get SSI output, post parameters
638:
639: =item *
640:
641: SSI cell rendering
642:
643: =item *
644:
645: Deal with Applet codebases
646:
647: =item *
648:
649: Build page
650:
651: =item *
652:
653: send headers
654:
655: =item *
656:
657: start body
658:
659: =item *
660:
661: start form
662:
663: =item *
664:
665: start table
666:
667: =item *
668:
669: submit element, etc, render page, untie hash
670:
671: =back
672:
673: =head1 OTHER SUBROUTINES
674:
675: =over 4
676:
677: =item *
678:
679: euclid() : Euclid's method for determining the greatest common denominator.
680:
681: =item *
682:
683: tracetable() : Build page table.
1.1 www 684:
1.30 harris41 685: =back
1.1 www 686:
1.30 harris41 687: =cut
1.1 www 688:
689:
690:
691:
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