version 1.16, 2001/05/28 14:21:22
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version 1.24, 2002/04/12 14:24:58
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# |
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# Page flip handler |
# Page flip handler |
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# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# 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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# |
# (Page Handler |
# (Page Handler |
# |
# |
# (TeX Content Handler |
# (TeX Content Handler |
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# |
# |
# 10/03,10/05,10/06,10/07,10/09,10/10,10/11,10/16,10/17, |
# 10/03,10/05,10/06,10/07,10/09,10/10,10/11,10/16,10/17, |
# 11/14,11/16, |
# 11/14,11/16, |
# 10/01/01,05/01,05/28 Gerd Kortemeyer |
# 10/01/01,05/01,05/28,07/05 Gerd Kortemeyer |
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package Apache::lonpageflip; |
package Apache::lonpageflip; |
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Line 41 sub addrid {
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Line 65 sub addrid {
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sub move { |
sub move { |
my ($rid,$mapurl,$direction)=@_; |
my ($rid,$mapurl,$direction)=@_; |
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my $startoutrid=$rid; |
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my $next=''; |
my $next=''; |
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Line 71 sub move {
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Line 96 sub move {
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} |
} |
} split(/\,/,$posnext); |
} split(/\,/,$posnext); |
if ($hash{'is_map_'.$next}) { |
if ($hash{'is_map_'.$next}) { |
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# This jumps to the beginning of a new map (going down level) |
if ( |
if ( |
$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'sequence') { |
$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'sequence') { |
$mapurl=$hash{'src_'.$next}; |
$mapurl=$hash{'src_'.$next}; |
$next=$hash{'map_start_'.$hash{'src_'.$next}}; |
$next=$hash{'map_start_'.$hash{'src_'.$next}}; |
} |
} |
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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(/\./,$next))[0]}; |
} |
} |
} elsif ($direction eq 'back') { |
} elsif ($direction eq 'back') { |
# ------------------------------------------------------------------- Backwards |
# ------------------------------------------------------------------- Backwards |
Line 102 sub move {
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Line 132 sub move {
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} |
} |
} split(/\,/,$posnext); |
} split(/\,/,$posnext); |
if ($hash{'is_map_'.$next}) { |
if ($hash{'is_map_'.$next}) { |
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# This jumps to the end of a new map (going down one level) |
if ( |
if ( |
$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'sequence') { |
$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$next}}} eq 'sequence') { |
$mapurl=$hash{'src_'.$next}; |
$mapurl=$hash{'src_'.$next}; |
$next=$hash{'map_finish_'.$hash{'src_'.$next}}; |
$next=$hash{'map_finish_'.$hash{'src_'.$next}}; |
} |
} |
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} elsif |
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((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
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# This comes back up from a map (going up one level); |
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$mapurl=$hash{'map_id_'.(split(/\./,$next))[0]}; |
} |
} |
} |
} |
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return ($next,$mapurl); |
return ($next,$mapurl); |
} |
} |
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Line 132 sub handler {
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Line 166 sub handler {
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my $redirecturl=''; |
my $redirecturl=''; |
my $next=''; |
my $next=''; |
my @possibilities=(); |
my @possibilities=(); |
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if (($ENV{'form.postdata'})&&($ENV{'request.course.fn'})) { |
if (($ENV{'form.postdata'})&&($ENV{'request.course.fn'})) { |
$ENV{'form.postdata'}=~/(\w+)\:(.*)/; |
$ENV{'form.postdata'}=~/(\w+)\:(.*)/; |
my $direction=$1; |
my $direction=$1; |
Line 159 sub handler {
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Line 192 sub handler {
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} |
} |
$currenturl=~s/^http\:\/\///; |
$currenturl=~s/^http\:\/\///; |
$currenturl=~s/^[^\/]+//; |
$currenturl=~s/^[^\/]+//; |
unless ($currenturl=~/\/res\//) { |
unless (($currenturl=~/^\/res\//) || |
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($currenturl=~/^\/adm\/wrapper\//)) { |
my $last; |
my $last; |
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db', |
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db', |
&GDBM_READER,0640)) { |
&GDBM_READER,0640)) { |
Line 179 sub handler {
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Line 213 sub handler {
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my $position; |
my $position; |
if ($position=Apache::lonnet::symbread($currenturl)) { |
if ($position=Apache::lonnet::symbread($currenturl)) { |
# ------------------------------------------------------------------------- Yes |
# ------------------------------------------------------------------------- Yes |
my ($mapurl,$mapnum,$thisurl)=split(/\_\_\_/,$position); |
my ($startoutmap,$mapnum,$thisurl)=split(/\_\_\_/,$position); |
$cachehash{$thisurl}=$mapnum; |
$cachehash{$startoutmap}{$thisurl}=$mapnum; |
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$cachehash{$startoutmap}{'last_known'}= |
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&Apache::lonnet::declutter($currenturl); |
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# ============================================================ Tie the big hash |
# ============================================================ Tie the big hash |
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
&GDBM_READER,0640)) { |
&GDBM_READER,0640)) { |
my $rid=$hash{'map_pc_/res/'.$mapurl}.'.'.$mapnum; |
my $rid=$hash{'map_pc_/res/'.$startoutmap}.'.'.$mapnum; |
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# ------------------------------------------------- Move forward, backward, etc |
# ------------------------------------------------- Move forward, backward, etc |
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my $endupmap; |
($next,$mapurl)=&move($rid,$mapurl,$direction); |
($next,$endupmap)=&move($rid,$startoutmap,$direction); |
# -------------------------------------- Do we have one and only one empty URL? |
# -------------------------------------- Do we have one and only one empty URL? |
my $safecount=0; |
my $safecount=0; |
while (($next) && ($next!~/\,/) && (!$hash{'src_'.$next}) |
while (($next) && ($next!~/\,/) && (!$hash{'src_'.$next}) |
&& ($safecount<25)) { |
&& ($safecount<25)) { |
($next,$mapurl)=&move($next,$mapurl,$direction); |
($next,$endupmap)=&move($next,$endupmap,$direction); |
$safecount++; |
$safecount++; |
} |
} |
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# We are now at at least one non-empty URL |
# ----------------------------------------------------- Check out possibilities |
# ----------------------------------------------------- Check out possibilities |
if ($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}; |
$redirecturl=$hash{'src_'.$next}; |
$cachehash{&Apache::lonnet::declutter($redirecturl)} |
$cachehash{$endupmap} |
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{&Apache::lonnet::declutter($redirecturl)} |
=(split(/\./,$next))[1]; |
=(split(/\./,$next))[1]; |
} else { |
} else { |
# ------------------------ There are multiple possibilities for a next resource |
# ------------------------ There are multiple possibilities for a next resource |
Line 211 sub handler {
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Line 250 sub handler {
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$multichoicehash{'src_'.$_}=$hash{'src_'.$_}; |
$multichoicehash{'src_'.$_}=$hash{'src_'.$_}; |
$multichoicehash{'title_'.$_}=$hash{'title_'.$_}; |
$multichoicehash{'title_'.$_}=$hash{'title_'.$_}; |
$multichoicehash{'type_'.$_}=$hash{'type_'.$_}; |
$multichoicehash{'type_'.$_}=$hash{'type_'.$_}; |
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my ($choicemap,$choiceres)=split(/\./,$_); |
$cachehash |
$cachehash |
{&Apache::lonnet::declutter( |
{&Apache::lonnet::declutter($hash{'src_'.$choicemap})} |
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{&Apache::lonnet::declutter( |
$multichoicehash |
$multichoicehash |
{'src_'.$_} |
{'src_'.$_} |
)} |
)} |
=(split(/\./,$_))[1]; |
=$choiceres; |
} @possibilities; |
} @possibilities; |
} |
} |
} else { |
} else { |
Line 226 sub handler {
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Line 267 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; |
$cachehash{'last_known'}=&Apache::lonnet::declutter($currenturl); |
foreach my $thismap (keys %cachehash) { |
&Apache::lonnet::symblist($mapurl,%cachehash); |
&Apache::lonnet::symblist($thismap,%{$cachehash{$thismap}}); |
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} |
# ============================================== Do not return before this line |
# ============================================== Do not return before this line |
if ($redirecturl) { |
if ($redirecturl) { |
# ----------------------------------------------------- There is a URL to go to |
# ----------------------------------------------------- There is a URL to go to |
Line 266 ENDSTART
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Line 308 ENDSTART
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$r->print(<<ENDNONE); |
$r->print(<<ENDNONE); |
<head><title>Choose Next Location</title></head> |
<head><title>Choose Next Location</title></head> |
<body bgcolor="#FFFFFF"> |
<body bgcolor="#FFFFFF"> |
<img src="/adm/lonKaputt/lonlogo_broken.gif" align=left> |
<img src="/adm/lonIcons/lonlogos.gif" align=right> |
<h1>Sorry!</h1> |
<h1>Sorry!</h1> |
<h2>Next resource could not be identified.</h2> |
<h2>Next resource could not be identified.</h2> |
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<h3>You probably are at the beginning or the end of the course.</h3> |
</body> |
</body> |
</html> |
</html> |
ENDNONE |
ENDNONE |