Annotation of rat/lonpage.pm, revision 1.61
1.1 www 1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
1.61 ! albertel 4: # $Id: lonpage.pm,v 1.60 2004/09/14 01:21:49 raeburn 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
1.5 www 244: my $prefix=$_.'_';
245: my %posthash=('request.prefix' => $prefix);
1.56 sakharuk 246: if ($ENV{'form.grade_target'} eq 'tex') {
247: $posthash{'grade_target'}=$ENV{'form.grade_target'};
248: $posthash{'textwidth'}=$ENV{'form.textwidth'};
249: $posthash{'problem_split'}=$ENV{'form.problem_split'};
250: $posthash{'latex_type'}=$ENV{'form.latex_type'};
251: $posthash{'rndseed'}=$ENV{'form.rndseed'};
252: }
1.8 www 253: if (($ENV{'form.'.$prefix.'submit'})
1.7 www 254: || ($ENV{'form.all_submit'})) {
1.30 harris41 255: foreach (keys %ENV) {
1.5 www 256: if ($_=~/^form.$prefix/) {
257: my $name=$_;
258: $name=~s/^form.$prefix//;
259: $posthash{$name}=$ENV{$_};
260: }
1.30 harris41 261: }
1.7 www 262: }
1.5 www 263: my $output=Apache::lonnet::ssi($src,%posthash);
1.61 ! albertel 264: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
1.46 sakharuk 265: if ($target eq 'tex') {
266: $output =~ s/^([^&]+)\\begin{document}//;
267: $output =~ s/\\end{document}//;
268: $output = '\parbox{\minipagewidth}{ '.$output.' }';
269: #some additional cleanup necessary for LateX (due to limitations of table environment
270: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
271: }
1.6 www 272: my $parser=HTML::TokeParser->new(\$output);
273: my $token;
1.12 www 274: my $thisdir=$src;
1.6 www 275: my $bodydef=0;
1.7 www 276: my $thisxml=0;
1.12 www 277: my @rlinks=();
1.7 www 278: if ($output=~/\?xml/) {
279: $isxml=1;
280: $thisxml=1;
281: $output=~
282: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
283: $xmlheader=$1;
284: }
1.12 www 285: while ($token=$parser->get_token) {
286: if ($token->[0] eq 'S') {
287: if ($token->[1] eq 'a') {
288: if ($token->[2]->{'href'}) {
289: $rlinks[$#rlinks+1]=
290: $token->[2]->{'href'};
291: }
292: } elsif ($token->[1] eq 'img') {
293: $rlinks[$#rlinks+1]=
294: $token->[2]->{'src'};
295: } elsif ($token->[1] eq 'embed') {
296: $rlinks[$#rlinks+1]=
297: $token->[2]->{'src'};
298: } elsif ($token->[1] eq 'base') {
299: $thisdir=$token->[2]->{'href'};
300: } elsif ($token->[1] eq 'body') {
1.7 www 301: $bodydef=1;
302: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
303: $ssitext{$_}=$token->[2]->{'text'};
304: $ssilink{$_}=$token->[2]->{'link'};
305: $ssivlink{$_}=$token->[2]->{'vlink'};
306: $ssialink{$_}=$token->[2]->{'alink'};
307: if ($thisxml) {
308: $xmlbody=$token->[4];
309: }
1.12 www 310: } elsif ($token->[1] eq 'meta') {
1.28 albertel 311: if ($token->[4] !~ m:/>$:) {
1.7 www 312: $allmeta.="\n".$token->[4].'</meta>';
1.28 albertel 313: } else {
314: $allmeta.="\n".$token->[4];
315: }
1.12 www 316: } elsif (($token->[1] eq 'script') &&
317: ($bodydef==0)) {
1.7 www 318: $allscript.="\n\n"
319: .$parser->get_text('/script');
1.6 www 320: }
1.12 www 321: }
322: }
1.6 www 323: if ($output=~/\<body[^\>]*\>(.*)/si) {
324: $output=$1;
325: }
326: $output=~s/\<\/body\>.*//si;
1.7 www 327: if ($output=~/\<form/si) {
328: $nforms++;
329: $output=~s/\<form[^\>]*\>//gsi;
330: $output=~s/\<\/form[^\>]*\>//gsi;
1.17 www 331: $output=~
1.18 www 332: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([\w\.\:]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
1.7 www 333: }
1.12 www 334: $thisdir=~s/\/[^\/]*$//;
1.30 harris41 335: foreach (@rlinks) {
1.12 www 336: unless (($_=~/^http:\/\//i) ||
1.31 albertel 337: ($_=~/^\//) ||
338: ($_=~/^javascript:/i) ||
339: ($_=~/^mailto:/i) ||
340: ($_=~/^\#/)) {
1.12 www 341: my $newlocation=
342: &Apache::lonnet::hreflocation($thisdir,$_);
343: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
344: }
1.30 harris41 345: }
1.24 www 346: # -------------------------------------------------- Deal with Applet codebases
347: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
1.5 www 348: $ssibody{$_}=$output;
1.3 www 349: # ---------------------------------------------------------------- End SSI cell
350: }
1.30 harris41 351: }
1.4 www 352: }
1.2 www 353: }
1.6 www 354: unless ($contents) {
1.53 www 355: &Apache::loncommon::content_type($r,'text/html');
1.3 www 356: $r->send_http_header;
1.59 raeburn 357: $r->print('<html>'."\n".
358: '<head>'."\n".
359: &Apache::lonmenu::registerurl(1,undef)."\n".
360: '</head>'."\n".
361: '<body bgcolor="#FFFFFF" onLoad="'
362: .&Apache::lonmenu::loadevents.
363: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
364: &Apache::lonmenu::menubuttons(undef,$target,1)
365: );
366: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
367: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').'.</body></html>');
1.3 www 368: } else {
369: # ------------------------------------------------------------------ Build page
1.7 www 370:
371: # ---------------------------------------------------------------- Send headers
1.37 sakharuk 372: unless ($target eq 'tex') {
373: if ($isxml) {
1.53 www 374: &Apache::loncommon::content_type($r,'text/xml');
1.37 sakharuk 375: $r->send_http_header;
376: $r->print($xmlheader);
377: } else {
1.53 www 378: &Apache::loncommon::content_type($r,'text/html');
1.37 sakharuk 379: $r->send_http_header;
380: $r->print('<html>');
381: }
1.7 www 382: # ------------------------------------------------------------------------ Head
1.37 sakharuk 383: $r->print("\n<head>\n".$allmeta);
384: if ($allscript) {
385: $r->print("\n<script language='JavaScript'>\n".
386: $allscript."\n</script>\n");
387: }
1.49 www 388: $r->print(&Apache::lonmenu::registerurl(1,undef));
1.37 sakharuk 389: $r->print("\n</head>\n");
1.7 www 390: # ------------------------------------------------------------------ Start body
1.37 sakharuk 391: if ($isxml) {
392: $r->print($xmlbody);
393: } else {
1.51 www 394: $r->print(
395: '<body bgcolor="#FFFFFF" onLoad="'.&Apache::lonmenu::loadevents.
396: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
397: &Apache::lonmenu::menubuttons(undef,$target,1)
398: );
1.37 sakharuk 399: }
1.7 www 400: # ------------------------------------------------------------------ Start form
1.37 sakharuk 401: if ($nforms) {
402: $r->print('<form method="post" action="'.
1.61 ! albertel 403: &Apache::lonenc::check_encrypt($requrl)
! 404: .'">');
1.40 sakharuk 405: }
1.56 sakharuk 406: } elsif ($target eq 'tex') {
1.47 sakharuk 407: $r->print('\documentclass{article}
1.40 sakharuk 408: \newcommand{\keephidden}[1]{}
409: \usepackage[dvips]{graphicx}
410: \usepackage{epsfig}
411: \usepackage{calc}
1.42 sakharuk 412: \usepackage{longtable}
1.40 sakharuk 413: \begin{document}');
414: }
1.7 www 415: # ----------------------------------------------------------------- Start table
1.40 sakharuk 416: if ($target eq 'tex') {
1.42 sakharuk 417: $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
1.43 sakharuk 418: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
1.40 sakharuk 419: } else {
1.37 sakharuk 420: $r->print('<table cols="'.$lcm.'" border="0">');
421: }
1.5 www 422: for ($i=0;$i<=$#rows;$i++) {
423: if ($rows[$i]) {
1.37 sakharuk 424: unless ($target eq 'tex') {
425: $r->print("\n<tr>");
426: }
1.4 www 427: my @colcont=split(/\&/,$rows[$i]);
1.6 www 428: my $avespan=$lcm/($#colcont+1);
429: for ($j=0;$j<=$#colcont;$j++) {
430: my $rid=$colcont[$j];
1.60 raeburn 431: my $metainfo = '';
432: print STDERR "src is $hash{'src_'.$rid}\n";
433: unless ($hash{'src_'.$rid} =~ m-^/uploaded/-) {
434: $metainfo ='<a name="'.
435: &Apache::lonnet::escape(&Apache::lonnet::declutter($hash{'src_'.$rid})).'" />'.
436: '<a href="'.$metalink{$rid}.'" target="LONcatInfo">'.
437: '<img src="/adm/lonMisc/cat_button.gif" border=0>'.
438: '</img></a>';
439: }
1.61 ! albertel 440: my $esrc=$hash{'src_'.$rid};
! 441: if ($hash{'encrypted_'.$rid}) {
! 442: $esrc=&Apache::lonenc::encrypted($esrc);
! 443: }
1.60 raeburn 444: $metainfo .= '<a href="/adm/evaluate?postdata='.
1.61 ! albertel 445: &Apache::lonnet::escape(&Apache::lonnet::declutter($esrc)).
1.60 raeburn 446: '" target="LONcatInfo">'.
447: '<img src="/adm/lonMisc/eval_button.gif" border=0>'.
448: '</img></a>';
1.27 www 449: if (
450: ($hash{'src_'.$rid}=~/\.(problem|exam|quiz|assess|survey|form)$/) &&
1.60 raeburn 451: (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) &&
452: ($hash{'src_'.$rid} !~ m-^/uploaded/-)) {
1.27 www 453: my ($mapid,$resid)=split(/\./,$rid);
454: my $symb=
455: &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
456: '___'.$resid.'___'.
457: &Apache::lonnet::declutter($hash{'src_'.$rid});
458: $metainfo.=
1.36 www 459: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
1.52 ng 460: # '&command=submission" target="LONcatInfo">'.
461: '&command=submission">'.
1.27 www 462: '<img src="/adm/lonMisc/subm_button.gif" border=0>'.
463: '</img></a>'.
1.36 www 464: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
1.52 ng 465: # '&command=gradingmenu" target="LONcatInfo">'.
466: '&command=gradingmenu">'.
1.27 www 467: '<img src="/adm/lonMisc/pgrd_button.gif" border=0>'.
468: '</img></a>'.
1.36 www 469: '<a href="/adm/parmset?symb='.&Apache::lonnet::escape($symb).
1.52 ng 470: # '" target="LONcatInfo">'.
471: '" >'.
1.27 www 472: '<img src="/adm/lonMisc/pprm_button.gif" border=0>'.
473: '</img></a>';
474: }
475: $metainfo.='<br></br>';
1.37 sakharuk 476: unless ($target eq 'tex') {
477: $r->print('<td colspan="'.$avespan.'"');
478: }
1.6 www 479: if ($cellemb{$rid} eq 'ssi') {
1.37 sakharuk 480: unless ($target eq 'tex') {
481: if ($ssibgcolor{$rid}) {
482: $r->print(' bgcolor="'.
483: $ssibgcolor{$rid}.'"');
484: }
485: $r->print('>'.$metainfo.'<font');
486:
487: if ($ssitext{$rid}) {
488: $r->print(' text="'.$ssitext{$rid}.'"');
489: }
490: if ($ssilink{$rid}) {
491: $r->print(' link="'.$ssilink{$rid}.'"');
492: }
493: if ($ssitext{$rid}) {
494: $r->print(' vlink="'.$ssivlink{$rid}.'"');
495: }
496: if ($ssialink{$rid}) {
497: $r->print(' alink="'.$ssialink{$rid}.'"');
498: }
499: $r->print('>');
500: }
501: $r->print($ssibody{$rid});
502: unless ($target eq 'tex') {
503: $r->print('</font>');
1.41 www 504: }
505: if ($ENV{'course.'.
506: $ENV{'request.course.id'}.
507: '.pageseparators'} eq 'yes') {
508: unless($target eq 'tex') {
509: $r->print('<hr />');
510: } else {
511: $r->print('\hline');
512: }
1.37 sakharuk 513: }
514: } elsif ($cellemb{$rid} eq 'img') {
1.14 www 515: $r->print('>'.$metainfo.'<img src="'.
1.7 www 516: $hash{'src_'.$rid}.'"></img>');
1.13 www 517: } elsif ($cellemb{$rid} eq 'emb') {
1.14 www 518: $r->print('>'.$metainfo.'<embed src="'.
1.13 www 519: $hash{'src_'.$rid}.'"></embed>');
1.60 raeburn 520: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
521: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'.
522: &mt('It is recommended that you use an up-to-date virus scanner before handling this file.').'</p><p><table>'.
523: &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 524: }
1.37 sakharuk 525: unless ($target eq 'tex') {
526: $r->print('</td>');
1.40 sakharuk 527: } else {
1.43 sakharuk 528: for (my $incol=1;$incol<=$avespan;$incol++) {
529: $r->print(' & ');
530: }
1.37 sakharuk 531: }
1.4 www 532: }
1.37 sakharuk 533: unless ($target eq 'tex') {
534: $r->print('</tr>');
1.40 sakharuk 535: } else {
1.42 sakharuk 536: $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
1.37 sakharuk 537: }
1.5 www 538: }
1.4 www 539: }
1.37 sakharuk 540: unless ($target eq 'tex') {
541: $r->print("\n</table>");
1.40 sakharuk 542: } else {
1.47 sakharuk 543: $r->print('\end{longtable}\strut');
1.37 sakharuk 544: }
1.7 www 545: # ---------------------------------------------------------------- Submit, etc.
546: if ($nforms) {
547: $r->print(
548: '<input name="all_submit" value="Submit All" type="'.
549: (($nforms>1)?'submit':'hidden').'"></input></form>');
550: }
1.40 sakharuk 551: unless ($target eq 'tex') {
552: $r->print('</body>'.&Apache::lonxml::xmlend());
553: } else {
554: $r->print('\end{document}'.$number_of_columns);
555: }
1.3 www 556: # -------------------------------------------------------------------- End page
557: }
1.1 www 558: # ------------------------------------------------------------- End render page
559: } else {
1.3 www 560: $r->content_type('text/html');
561: $r->send_http_header;
1.39 www 562: &Apache::lonsequence::viewmap($r,$requrl);
1.1 www 563: }
564: # ------------------------------------------------------------------ Untie hash
565: unless (untie(%hash)) {
566: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
567: "Could not untie coursemap $fn (browse).</font>");
568: }
569: # -------------------------------------------------------------------- All done
570: return OK;
571: # ----------------------------------------------- Errors, hash could no be tied
572: }
573: }
574: }
1.39 www 575: $r->content_type('text/html');
576: $r->send_http_header;
577: &Apache::lonsequence::viewmap($r,$requrl);
578: return OK;
1.1 www 579: }
580:
581: 1;
582: __END__
583:
1.30 harris41 584: =head1 NAME
585:
586: Apache::lonpage - Page Handler
587:
588: =head1 SYNOPSIS
589:
590: Invoked by /etc/httpd/conf/srm.conf:
591:
592: <LocationMatch "^/res/.*\.page$>
593: SetHandler perl-script
594: PerlHandler Apache::lonpage
595: </LocationMatch>
596:
597: =head1 INTRODUCTION
598:
599: This module renders a .page resource.
600:
601: This is part of the LearningOnline Network with CAPA project
602: described at http://www.lon-capa.org.
603:
604: =head1 HANDLER SUBROUTINE
605:
606: This routine is called by Apache and mod_perl.
607:
608: =over 4
609:
610: =item *
611:
612: set document type for header only
613:
614: =item *
615:
616: tie db file
617:
618: =item *
619:
620: render page
621:
622: =item *
623:
624: add to symb list
625:
626: =item *
627:
628: page parms
629:
630: =item *
631:
632: Get SSI output, post parameters
633:
634: =item *
635:
636: SSI cell rendering
637:
638: =item *
639:
640: Deal with Applet codebases
641:
642: =item *
643:
644: Build page
645:
646: =item *
647:
648: send headers
649:
650: =item *
651:
652: start body
653:
654: =item *
655:
656: start form
657:
658: =item *
659:
660: start table
661:
662: =item *
663:
664: submit element, etc, render page, untie hash
665:
666: =back
667:
668: =head1 OTHER SUBROUTINES
669:
670: =over 4
671:
672: =item *
673:
674: euclid() : Euclid's method for determining the greatest common denominator.
675:
676: =item *
677:
678: tracetable() : Build page table.
1.1 www 679:
1.30 harris41 680: =back
1.1 www 681:
1.30 harris41 682: =cut
1.1 www 683:
684:
685:
686:
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