version 1.6, 2000/10/11 21:16:29
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version 1.88, 2015/03/14 22:26:50
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# |
# |
# Page flip handler |
# Page flip handler |
# |
# |
# (Page Handler |
# $Id$ |
# |
# |
# (TeX Content Handler |
# Copyright Michigan State University Board of Trustees |
# |
# |
# 05/29/00,05/30 Gerd Kortemeyer) |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, |
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# 10/02 Gerd Kortemeyer) |
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# |
# |
# 10/03,10/05,10/06,10/07,10/09,10/10,10/11 Gerd Kortemeyer |
# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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package Apache::lonpageflip; |
package Apache::lonpageflip; |
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use strict; |
use strict; |
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use LONCAPA; |
use Apache::Constants qw(:common :http REDIRECT); |
use Apache::Constants qw(:common :http REDIRECT); |
use Apache::lonnet(); |
use Apache::lonnet; |
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use Apache::loncommon(); |
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use Apache::lonuserstate; |
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use Apache::lonlocal; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use GDBM_File; |
use GDBM_File; |
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Line 24 use GDBM_File;
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Line 45 use GDBM_File;
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my %hash; |
my %hash; |
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sub cleanup { |
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if (tied(%hash)){ |
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&Apache::lonnet::logthis('Cleanup pageflip: hash'); |
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unless (untie(%hash)) { |
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&Apache::lonnet::logthis('Failed cleanup pageflip: hash'); |
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} |
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} |
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return OK; |
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} |
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sub addrid { |
sub addrid { |
my ($current,$new,$condid)=@_; |
my ($current,$new,$condid)=@_; |
unless ($condid) { $condid=0; } |
unless ($condid) { $condid=0; } |
if (&Apache::lonnet::allowed('bre',$hash{'src_'.$new})) { |
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if ($current) { |
if ($current) { |
$current.=','.$new; |
$current.=','.$new; |
} else { |
} else { |
$current=''.$new; |
$current=''.$new; |
} |
} |
} |
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return $current; |
return $current; |
} |
} |
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# ================================================================ Main Handler |
sub fullmove { |
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my ($rid,$mapurl,$direction)=@_; |
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if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db', |
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&GDBM_READER(),0640)) { |
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($rid,$mapurl)=&move($rid,$mapurl,$direction); |
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untie(%hash); |
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} |
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return($rid,$mapurl); |
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} |
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sub handler { |
sub hash_src { |
my $r=shift; |
my ($id)=@_; |
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my ($mapid,$resid)=split(/\./,$id); |
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my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid}, |
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$resid,$hash{'src_'.$id}); |
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if ($hash{'encrypted_'.$id}) { |
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return (&Apache::lonenc::encrypted($hash{'src_'.$id}), |
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&Apache::lonenc::encrypted($symb)); |
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} |
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return ($hash{'src_'.$id},$symb); |
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} |
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# ------------------------------------------- Set document type for header only |
sub move { |
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my ($next,$endupmap,$direction) = @_; |
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my $safecount=0; |
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my $allowed=0; |
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do { |
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($next,$endupmap)=&get_next_possible_move($next,$endupmap,$direction); |
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my $url = $hash{'src_'.$next}; |
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my ($mapid,$resid)=split(/\./,$next); |
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my $symb = &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid}, |
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$resid,$url); |
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if ($url eq '' || $symb eq '') { |
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$allowed = 0; |
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} else { |
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my $priv = &Apache::lonnet::allowed('bre',$url,$symb); |
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$allowed = (($priv eq 'F') || ($priv eq '2')); |
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} |
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$safecount++; |
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} while ( ($next) |
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&& ($next!~/\,/) |
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&& ( |
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(!$hash{'src_'.$next}) |
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|| ( |
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(!$env{'request.role.adv'}) |
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&& $hash{'randomout_'.$next} |
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) |
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|| (!$allowed) |
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) |
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&& ($safecount<10000)); |
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if ($r->header_only) { |
return ($next,$endupmap); |
$r->content_type('text/html'); |
} |
$r->send_http_header; |
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return OK; |
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} |
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my %cachehash=(); |
sub get_next_possible_move { |
my $multichoice=0; |
my ($rid,$mapurl,$direction)=@_; |
my %multichoicehash=(); |
my $startoutrid=$rid; |
my $redirecturl=''; |
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my $next=''; |
my $next=''; |
my @possibilities=(); |
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if (($ENV{'form.postdata'})&&($ENV{'request.course.fn'})) { |
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$ENV{'form.postdata'}=~/(\w+)\:(.*)/; |
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my $direction=$1; |
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my $currenturl=$2; |
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$currenturl=~s/^http\:\/\///; |
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$currenturl=~s/^[^\/]+//; |
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# ------------------------------------------- Do we have any idea where we are? |
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my $position; |
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if ($position=Apache::lonnet::symbread($currenturl)) { |
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# ------------------------------------------------------------------------- Yes |
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my ($mapurl,$mapnum,$thisurl)=split(/\_\_\_/,$position); |
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$cachehash{$thisurl}=$mapnum; |
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# ============================================================ Tie the big hash |
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if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
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&GDBM_READER,0640)) { |
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my $rid=$hash{'map_pc_/res/'.$mapurl}.'.'.$mapnum; |
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my $next=''; |
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my $mincond=1; |
my $mincond=1; |
my $posnext=''; |
my $posnext=''; |
if ($direction eq 'forward') { |
if ($direction eq 'forward') { |
# --------------------------------------------------------------------- Forward |
# --------------------------------------------------------------------- Forward |
map { |
while ($hash{'type_'.$rid} eq 'finish') { |
my $thiscond= |
$rid=$hash{'ids_'.$hash{'map_id_'.(split(/\./,$rid))[0]}}; |
&Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); |
} |
if ($thiscond>=$mincond) { |
foreach my $id (split(/\,/,$hash{'to_'.$rid})) { |
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my $condition= $hash{'conditions_'.$hash{'goesto_'.$id}}; |
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my $rescond = &Apache::lonnet::docondval($condition); |
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my $linkcond = &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$id}}); |
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my $thiscond = ($rescond<$linkcond)?$rescond:$linkcond; |
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if ($thiscond>=$mincond) { |
if ($posnext) { |
if ($posnext) { |
$posnext.=','.$_.':'.$thiscond; |
$posnext.=','.$id.':'.$thiscond; |
} else { |
} else { |
$posnext=$_.':'.$thiscond; |
$posnext=$id.':'.$thiscond; |
} |
} |
if ($thiscond>$mincond) { $mincond=$thiscond; } |
if ($thiscond>$mincond) { $mincond=$thiscond; } |
} |
} |
} split(/\,/,$hash{'to_'.$rid}); |
} |
map { |
foreach my $id (split(/\,/,$posnext)) { |
my ($linkid,$condval)=split(/\:/,$_); |
my ($linkid,$condval)=split(/\:/,$id); |
if ($condval>=$mincond) { |
if ($condval>=$mincond) { |
$next=&addrid($next,$hash{'goesto_'.$linkid}, |
$next=&addrid($next,$hash{'goesto_'.$linkid}, |
$hash{'condid_'.$hash{'undercond_'.$linkid}}); |
$hash{'condid_'.$hash{'undercond_'.$linkid}}); |
} |
} |
} split(/\,/,$posnext); |
} |
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if ($hash{'is_map_'.$next}) { |
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# This jumps to the beginning of a new map (going down level) |
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if ( |
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$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'sequence') { |
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$mapurl=$hash{'src_'.$next}; |
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$next=$hash{'map_start_'.$hash{'src_'.$next}}; |
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} elsif ( |
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# This jumps back up from an empty sequence, to a page up one level |
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$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'page') { |
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$mapurl=$hash{'map_id_'.(split(/\./,$next))[0]}; |
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} |
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} elsif |
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((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
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# This comes up from a map (coming up one level); |
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$mapurl=$hash{'map_id_'.(split(/\./,$next))[0]}; |
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} |
} elsif ($direction eq 'back') { |
} elsif ($direction eq 'back') { |
# ------------------------------------------------------------------- Backwards |
# ------------------------------------------------------------------- Backwards |
map { |
while ($hash{'type_'.$rid} eq 'start') { |
my $thiscond= |
$rid=$hash{'ids_'.$hash{'map_id_'.(split(/\./,$rid))[0]}}; |
&Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); |
} |
if ($thiscond>=$mincond) { |
foreach my $id (split(/\,/,$hash{'from_'.$rid})) { |
if ($posnext) { |
my $condition= $hash{'conditions_'.$hash{'comesfrom_'.$id}}; |
$posnext.=','.$_.':'.$thiscond; |
my $rescond = &Apache::lonnet::docondval($condition); |
} else { |
my $linkcond = &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$id}}); |
$posnext=$_.':'.$thiscond; |
my $thiscond = ($rescond<$linkcond)?$rescond:$linkcond; |
} |
if ($thiscond>=$mincond) { |
if ($thiscond>$mincond) { $mincond=$thiscond; } |
if ($posnext) { |
} |
$posnext.=','.$id.':'.$thiscond; |
} split(/\,/,$hash{'from_'.$rid}); |
} else { |
map { |
$posnext=$id.':'.$thiscond; |
my ($linkid,$condval)=split(/\:/,$_); |
} |
if ($condval>=$mincond) { |
if ($thiscond>$mincond) { $mincond=$thiscond; } |
$next=&addrid($next,$hash{'comesfrom_'.$linkid}, |
} |
$hash{'condid_'.$hash{'undercond_'.$linkid}}); |
} |
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foreach my $id (split(/\,/,$posnext)) { |
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my ($linkid,$condval)=split(/\:/,$id); |
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if ($condval>=$mincond) { |
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$next=&addrid($next,$hash{'comesfrom_'.$linkid}, |
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$hash{'condid_'.$hash{'undercond_'.$linkid}}); |
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} |
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} |
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if ($hash{'is_map_'.$next}) { |
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# This jumps to the end of a new map (going down one level) |
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if ( |
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$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'sequence') { |
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$mapurl=$hash{'src_'.$next}; |
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$next=$hash{'map_finish_'.$hash{'src_'.$next}}; |
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} elsif ( |
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$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'page') { |
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# This jumps back up from an empty sequence, to a page up one level |
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$mapurl=$hash{'map_id_'.(split(/\./,$next))[0]}; |
} |
} |
} split(/\,/,$posnext); |
} elsif |
} elsif ($direction eq 'up') { |
((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
# -------------------------------------------------------------------------- Up |
# This comes back up from a map (going up one level); |
} elsif ($direction eq 'down') { |
$mapurl=$hash{'map_id_'.(split(/\./,$next))[0]}; |
# ------------------------------------------------------------------------ Down |
} |
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} |
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return ($next,$mapurl); |
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} |
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sub first_accessible_resource { |
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my $furl; |
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if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db', |
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&GDBM_READER(),0640)) { |
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$furl=$hash{'first_url'}; |
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my %args; |
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my ($url,$args) = split(/\?/,$furl); |
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foreach my $pair (split(/\&/,$args)) { |
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my ($name,$value) = split(/=/,$pair); |
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$args{&unescape($name)} = &unescape($value); |
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} |
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if (!&Apache::lonnet::allowed('bre',$url,$args{'symb'})) { |
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# Wow, we cannot see this ... move forward to the next one that we can see |
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my ($newrid,$newmap)=&move($hash{'first_rid'},$hash{'first_mapurl'},'forward'); |
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# Build the new URL |
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my ($newmapid,$newresid)=split(/\./,$newrid); |
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my $symb=&Apache::lonnet::encode_symb($newmap,$newresid,$hash{'src_'.$newrid}); |
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$furl=&add_get_param($hash{'src_'.$newrid},{ 'symb' => $symb }); |
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if ($hash{'encrypted_'.$newrid}) { |
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$furl=&Apache::lonenc::encrypted($furl); |
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} |
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} |
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untie(%hash); |
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return $furl; |
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} else { |
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return '/adm/navmaps'; |
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} |
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} |
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# ================================================================ Main Handler |
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sub handler { |
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my $r=shift; |
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# ------------------------------------------- Set document type for header only |
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if ($r->header_only) { |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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return OK; |
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} |
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my %cachehash=(); |
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my $multichoice=0; |
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my %multichoicehash=(); |
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my ($redirecturl,$redirectsymb); |
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my $next=''; |
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my @possibilities=(); |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['postdata']); |
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if (($env{'form.postdata'})&&($env{'request.course.fn'})) { |
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my ($direction,$currenturl) = ($env{'form.postdata'}=~/(\w+)\:(.*)/); |
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if ($env{'request.course.id'}) { |
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# Check if course needs to be re-initialized |
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my $loncaparev = $r->dir_config('lonVersion'); |
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my ($result,@reinit) = &Apache::loncommon::needs_coursereinit($loncaparev); |
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if ($result eq 'switch') { |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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$r->print(&Apache::loncommon::check_release_result(@reinit)); |
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return OK; |
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} elsif ($result eq 'update') { |
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my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; |
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my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; |
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my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum"); |
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if ($ferr) { |
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my $requrl = $r->uri; |
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$env{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; |
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$env{'user.reinit'} = 1; |
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return HTTP_NOT_ACCEPTABLE; |
} |
} |
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} |
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} |
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if ($currenturl=~m|^/enc/|) { |
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$currenturl=&Apache::lonenc::unencrypted($currenturl); |
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} |
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$currenturl=~s/\.\d+\.(\w+)$/\.$1/; |
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if ($direction eq 'firstres') { |
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my $furl=&first_accessible_resource(); |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->header_out(Location => |
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&Apache::lonnet::absolute_url().$furl); |
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return REDIRECT; |
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} |
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if ($direction eq 'return') { |
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# -------------------------------------------------------- Return to last known |
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my $last; |
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if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', |
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&GDBM_READER(),0640)) { |
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$last=$hash{'last_known'}; |
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untie(%hash); |
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} |
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my $newloc; |
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if (($last) && (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db', |
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&GDBM_READER(),0640))) { |
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my ($murl,$id,$fn)=&Apache::lonnet::decode_symb($last); |
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$id=$hash{'map_pc_'.&Apache::lonnet::clutter($murl)}.'.'.$id; |
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$newloc=$hash{'src_'.$id}; |
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if ($newloc) { |
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if ($hash{'encrypted_'.$id}) { $newloc=&Apache::lonenc::encrypted($newloc); } |
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} else { |
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$newloc='/adm/navmaps'; |
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} |
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untie %hash; |
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} else { |
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$newloc='/adm/navmaps'; |
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} |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->header_out(Location => |
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&Apache::lonnet::absolute_url().$newloc); |
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return REDIRECT; |
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} |
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$currenturl=~s/^https?\:\/\///; |
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$currenturl=~s/^[^\/]+//; |
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# |
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# Is the current URL on the map? If not, start with last known URL |
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# |
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unless (&Apache::lonnet::is_on_map($currenturl)) { |
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my $last; |
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if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', |
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&GDBM_READER(),0640)) { |
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$last=$hash{'last_known'}; |
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untie(%hash); |
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} |
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if ($last) { |
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$currenturl=&Apache::lonnet::clutter((&Apache::lonnet::decode_symb($last))[2]); |
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} else { |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->header_out(Location => |
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&Apache::lonnet::absolute_url(). |
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'/adm/noidea.html'); |
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return REDIRECT; |
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} |
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} |
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# ------------------------------------------- Do we have any idea where we are? |
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my $position; |
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if ($position=Apache::lonnet::symbread($currenturl)) { |
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# ------------------------------------------------------------------------- Yes |
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my ($startoutmap,$mapnum,$thisurl)=&Apache::lonnet::decode_symb($position); |
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$cachehash{$startoutmap}{$thisurl}=[$thisurl,$mapnum]; |
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$cachehash{$startoutmap}{'last_known'}= |
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[&Apache::lonnet::declutter($currenturl),$mapnum]; |
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# ============================================================ Tie the big hash |
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if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db', |
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&GDBM_READER(),0640)) { |
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my $rid=$hash{'map_pc_'.&Apache::lonnet::clutter($startoutmap)}. |
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'.'.$mapnum; |
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# ------------------------------------------------- Move forward, backward, etc |
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my $endupmap; |
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($next,$endupmap)=&move($rid,$startoutmap,$direction); |
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# -------------------------------------- Do we have one and only one empty URL? |
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# We are now at at least one non-empty URL |
# ----------------------------------------------------- Check out possibilities |
# ----------------------------------------------------- Check out possibilities |
if ($next) { |
if ($next) { |
@possibilities=split(/\,/,$next); |
@possibilities=split(/\,/,$next); |
if ($#possibilities==0) { |
if ($#possibilities==0) { |
# ---------------------------------------------- Only one possibility, redirect |
# ---------------------------------------------- Only one possibility, redirect |
$redirecturl=$hash{'src_'.$next}; |
($redirecturl,$redirectsymb)=&hash_src($next); |
$cachehash{&Apache::lonnet::declutter($redirecturl)} |
$cachehash{$endupmap}{$redirecturl}= |
=(split(/\./,$next))[1]; |
[$redirecturl,(split(/\./,$next))[1]]; |
} else { |
} else { |
# ------------------------ There are multiple possibilities for a next resource |
# ------------------------ There are multiple possibilities for a next resource |
$multichoice=1; |
$multichoice=1; |
map { |
foreach my $id (@possibilities) { |
$multichoicehash{'src_'.$_}=$hash{'src_'.$_}; |
$multichoicehash{'src_'.$id}=$hash{'src_'.$id}; |
$multichoicehash{'title_'.$_}=$hash{'title_'.$_}; |
$multichoicehash{'title_'.$id}=$hash{'title_'.$id}; |
$multichoicehash{'type_'.$_}=$hash{'type_'.$_}; |
$multichoicehash{'type_'.$id}=$hash{'type_'.$id}; |
$cachehash |
(my $first, my $second) = $id =~ /(\d+).(\d+)/; |
{&Apache::lonnet::declutter( |
my $symbSrc = Apache::lonnet::declutter($hash{'src_'.$id}); |
$multichoicehash |
$multichoicehash{'symb_'.$id} = |
{'src_'.$_} |
Apache::lonnet::declutter($hash{'map_id_'.$first}.'___'. |
)} |
$second.'___'.$symbSrc); |
=(split(/\./,$_))[1]; |
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} @possibilities; |
my ($choicemap,$choiceres)=split(/\./,$id); |
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my $map=&Apache::lonnet::declutter($hash{'src_'.$choicemap}); |
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my $url=$multichoicehash{'src_'.$id}; |
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$cachehash{$map}{$url}=[$url,$choiceres]; |
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} |
} |
} |
} else { |
} else { |
# -------------------------------------------------------------- No place to go |
# -------------------------------------------------------------- No place to go |
Line 153 sub handler {
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Line 411 sub handler {
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# ----------------- The program must come past this point to untie the big hash |
# ----------------- The program must come past this point to untie the big hash |
untie(%hash); |
untie(%hash); |
# --------------------------------------------------------- Store position info |
# --------------------------------------------------------- Store position info |
$cachehash{'last_direction'}=$direction; |
$cachehash{$startoutmap}{'last_direction'}=[$direction,'notasymb']; |
&Apache::lonnet::symblist($mapurl,%cachehash); |
foreach my $thismap (keys(%cachehash)) { |
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my $mapnum=$cachehash{$thismap}->{'mapnum'}; |
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delete($cachehash{$thismap}->{'mapnum'}); |
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&Apache::lonnet::symblist($thismap, |
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%{$cachehash{$thismap}}); |
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} |
# ============================================== Do not return before this line |
# ============================================== Do not return before this line |
if ($redirecturl) { |
if ($redirecturl) { |
# ----------------------------------------------------- There is a URL to go to |
# ----------------------------------------------------- There is a URL to go to |
$r->content_type('text/html'); |
if ($direction eq 'forward') { |
$r->header_out(Location => |
&Apache::lonnet::linklog($currenturl,$redirecturl); |
'http://'.$ENV{'HTTP_HOST'}.$redirecturl); |
} |
|
if ($direction eq 'back') { |
|
&Apache::lonnet::linklog($redirecturl,$currenturl); |
|
} |
|
# ------------------------------------- Check for and display critical messages |
|
my ($redirect, $url) = &Apache::loncommon::critical_redirect(300); |
|
unless ($redirect) { |
|
$url=&Apache::lonnet::absolute_url().$redirecturl; |
|
$url = &add_get_param($url, { 'symb' => $redirectsymb}); |
|
} |
|
&Apache::loncommon::content_type($r,'text/html'); |
|
$r->header_out(Location => $url); |
return REDIRECT; |
return REDIRECT; |
} else { |
} else { |
# --------------------------------------------------------- There was a problem |
# --------------------------------------------------------- There was a problem |
} |
&Apache::loncommon::content_type($r,'text/html'); |
|
$r->send_http_header; |
|
my %lt=&Apache::lonlocal::texthash('title' => 'End of Sequence', |
|
'explain' => |
|
'You have reached the end of the sequence of materials.', |
|
'back' => 'Go Back', |
|
'nav' => 'Course Contents', |
|
'wherenext' => |
|
'There are several possibilities of where to go next', |
|
'pick' => |
|
'Please click on the the resource you intend to access', |
|
'titleheader' => 'Title', |
|
'type' => 'Type'); |
|
if (&Apache::loncommon::course_type() eq 'Community') { |
|
$lt{'nav'} = &mt('Community Contents'); |
|
} |
|
if ($#possibilities>0) { |
|
my $start_page= |
|
&Apache::loncommon::start_page('Multiple Resources'); |
|
$r->print(<<ENDSTART); |
|
$start_page |
|
<h3>$lt{'wherenext'}</h3> |
|
<p> |
|
$lt{'pick'}: |
|
<p> |
|
<table border="2"> |
|
<tr><th>$lt{'titleheader'}</th><th>$lt{'type'}</th></tr> |
|
ENDSTART |
|
foreach my $id (@possibilities) { |
|
$r->print( |
|
'<tr><td><a href="'. |
|
&add_get_param($multichoicehash{'src_'.$id}, |
|
{'symb' => |
|
$multichoicehash{'symb_'.$id}, |
|
}).'">'. |
|
$multichoicehash{'title_'.$id}. |
|
'</a></td><td>'.$multichoicehash{'type_'.$id}. |
|
'</td></tr>'); |
|
} |
|
$r->print('</table>'); |
|
} else { |
|
$r->print( |
|
&Apache::loncommon::start_page('No Resource') |
|
.'<h2>'.$lt{'title'}.'</h2>' |
|
.'<p>'.$lt{'explain'}.'</p>'); |
|
} |
|
$r->print( |
|
&Apache::lonhtmlcommon::actionbox( |
|
['<a href="/adm/flip?postdata=return:">'.$lt{'back'}.'</a></li>', |
|
'<a href="/adm/navmaps">'.$lt{'nav'}.'</a></li>' |
|
]) |
|
.&Apache::loncommon::end_page()); |
|
return OK; |
|
} |
} else { |
} else { |
# ------------------------------------------------- Problem, could not tie hash |
# ------------------------------------------------- Problem, could not tie hash |
$ENV{'user.error.msg'}="/adm/flip:bre:0:1:Course Data Missing"; |
$env{'user.error.msg'}="/adm/flip:bre:0:1:Course Data Missing"; |
return HTTP_NOT_ACCEPTABLE; |
return HTTP_NOT_ACCEPTABLE; |
} |
} |
} else { |
} else { |
# ---------------------------------------- No, could not determine where we are |
# ---------------------------------------- No, could not determine where we are |
$r->internal_redirect('/adm/ambiguous'); |
$r->internal_redirect('/adm/ambiguous'); |
|
return OK; |
} |
} |
} else { |
} else { |
# -------------------------- Class was not initialized or page fliped strangely |
# -------------------------- Class was not initialized or page fliped strangely |
$ENV{'user.error.msg'}="/adm/flip:bre:0:0:Choose Course"; |
$env{'user.error.msg'}="/adm/flip:bre:0:0:Choose Course"; |
return HTTP_NOT_ACCEPTABLE; |
return HTTP_NOT_ACCEPTABLE; |
} |
} |
} |
} |
Line 184 sub handler {
|
Line 512 sub handler {
|
1; |
1; |
__END__ |
__END__ |
|
|
|
=pod |
|
|
|
=head1 NAME |
|
|
|
Apache::lonpageflip |
|
|
|
=head1 SYNOPSIS |
|
|
|
Deals with forward, backward, and other page flips. |
|
|
|
This is part of the LearningOnline Network with CAPA project |
|
described at http://www.lon-capa.org. |
|
|
|
=head1 OVERVIEW |
|
|
|
(empty) |
|
|
|
=head1 SUBROUTINES |
|
|
|
=over cleanup() |
|
|
|
=item addrid() |
|
|
|
=item fullmove() |
|
|
|
=item hash_src() |
|
|
|
=item move() |
|
|
|
=item get_next_possible_move() |
|
|
|
=item first_accessible_resource() |
|
|
|
=item handler() |
|
|
|
=back |
|
|
|
=cut |
|
|
|
|
|
|