version 1.37, 2003/03/08 01:39:29
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version 1.60, 2005/11/15 18:39:45
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# |
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
# |
# (Page Handler |
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# |
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# (TeX Content Handler |
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# |
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# 05/29/00,05/30 Gerd Kortemeyer) |
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# 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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# |
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# 10/03,10/05,10/06,10/07,10/09,10/10,10/11,10/16,10/17, |
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# 11/14,11/16, |
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# 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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use strict; |
use strict; |
use Apache::Constants qw(:common :http REDIRECT); |
use Apache::Constants qw(:common :http REDIRECT); |
use Apache::lonnet(); |
use Apache::lonnet; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use GDBM_File; |
use GDBM_File; |
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Line 74 sub addrid {
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Line 63 sub addrid {
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sub fullmove { |
sub fullmove { |
my ($rid,$mapurl,$direction)=@_; |
my ($rid,$mapurl,$direction)=@_; |
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)) { |
($rid,$mapurl)=&move($rid,$mapurl,$direction); |
($rid,$mapurl)=&move($rid,$mapurl,$direction); |
untie(%hash); |
untie(%hash); |
Line 82 sub fullmove {
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Line 71 sub fullmove {
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return($rid,$mapurl); |
return($rid,$mapurl); |
} |
} |
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sub hash_src { |
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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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sub move { |
sub move { |
my ($rid,$mapurl,$direction)=@_; |
my ($rid,$mapurl,$direction)=@_; |
my $startoutrid=$rid; |
my $startoutrid=$rid; |
Line 120 sub move {
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Line 121 sub move {
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$hash{'map_type_'.$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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# 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(/\./,$next))[0]}; |
} |
} |
} elsif |
} elsif |
((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
Line 156 sub move {
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Line 161 sub move {
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$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}}; |
} |
} 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(/\./,$next))[0]}; |
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} |
} elsif |
} elsif |
((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
((split(/\./,$startoutrid))[0]!=(split(/\./,$next))[0]) { |
# This comes back up from a map (going up one level); |
# This comes back up from a map (going up one level); |
Line 166 sub move {
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Line 175 sub move {
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return ($next,$mapurl); |
return ($next,$mapurl); |
} |
} |
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sub navlaunch { |
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my ($r)=@_; |
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&Apache::loncommon::content_type($r,'text/html'); |
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&Apache::loncommon::no_cache($r); |
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$r->send_http_header; |
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my $html=&Apache::lonxml::xmlbegin(); |
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$r->print("$html<head>\n"); |
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$r->print('</head>'. |
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&Apache::loncommon::bodytag('Launched')); |
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$r->print(<<ENDNAV); |
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<p><a href="/adm/flip?postdata=firstres%3a">Goto first resource</a></p> |
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<script type="text/javascript"> |
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function collapse() { |
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menu=window.open("/adm/navmaps?collapseExternal","loncapanav", |
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"height=600,width=400,scrollbars=1"); |
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this.document.location='/adm/navmaps?turningOffExternal'; |
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} |
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</script> |
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<p><a href="javascript:collapse();">Collapse external navigation window</a></p> |
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ENDNAV |
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$r->print(&Apache::loncommon::endbodytag().'</html>'); |
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} |
# ================================================================ Main Handler |
# ================================================================ Main Handler |
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sub handler { |
sub handler { |
Line 174 sub handler {
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Line 205 sub handler {
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# ------------------------------------------- Set document type for header only |
# ------------------------------------------- Set document type for header only |
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if ($r->header_only) { |
if ($r->header_only) { |
$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
$r->send_http_header; |
return OK; |
return OK; |
} |
} |
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my %cachehash=(); |
my %cachehash=(); |
my $multichoice=0; |
my $multichoice=0; |
my %multichoicehash=(); |
my %multichoicehash=(); |
my $redirecturl=''; |
my ($redirecturl,$redirectsymb); |
my $next=''; |
my $next=''; |
my @possibilities=(); |
my @possibilities=(); |
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['postdata']); |
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['postdata']); |
if (($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; |
my $currenturl=$2; |
my $currenturl=$2; |
if ($direction eq 'return') { |
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 $furl; |
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if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db', |
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&GDBM_READER(),0640)) { |
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$furl=$bighash{'first_url'}; |
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untie(%bighash); |
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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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'http://'.$ENV{'HTTP_HOST'}.$furl); |
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return REDIRECT; |
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} |
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if ($direction eq 'return' || $direction eq 'navlaunch') { |
# -------------------------------------------------------- Return to last known |
# -------------------------------------------------------- Return to last known |
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)) { |
$last=$hash{'last_known'}; |
$last=$hash{'last_known'}; |
untie(%hash); |
untie(%hash); |
} |
} |
my $newloc; |
my $newloc; |
if (($last) && (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
if (($last) && (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db', |
&GDBM_READER(),0640))) { |
&GDBM_READER(),0640))) { |
my ($murl,$fn)=split(/\_\_\_/,$last); |
my ($murl,$id,$fn)=&Apache::lonnet::decode_symb($last); |
my $id; |
$id=$hash{'map_pc_'.&Apache::lonnet::clutter($murl)}.'.'.$id; |
($murl,$id,$fn)=split(/\_\_\_/,&Apache::lonnet::symbread($fn)); |
$newloc=$hash{'src_'.$id}; |
$newloc=$hash{'src_'. |
if ($newloc) { |
$hash{'map_pc_'.&Apache::lonnet::clutter($murl)}.'.'.$id}; |
if ($hash{'encrypted_'.$id}) { $newloc=&Apache::lonenc::encrypted($newloc); } |
unless ($newloc) { $newloc='/adm/noidea.html'; } |
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} else { |
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$newloc='/adm/navmaps'; |
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} |
untie %hash; |
untie %hash; |
} else { |
} else { |
$newloc='/adm/noidea.html'; |
$newloc='/adm/navmaps'; |
} |
} |
$r->content_type('text/html'); |
if ($newloc eq '/adm/navmaps' && $direction eq 'navlaunch') { |
$r->header_out(Location => |
&navlaunch($r); |
'http://'.$ENV{'HTTP_HOST'}.$newloc); |
return OK; |
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} else { |
return REDIRECT; |
&Apache::loncommon::content_type($r,'text/html'); |
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$r->header_out(Location => |
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'http://'.$ENV{'HTTP_HOST'}.$newloc); |
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return REDIRECT; |
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} |
} |
} |
$currenturl=~s/^http\:\/\///; |
$currenturl=~s/^http\:\/\///; |
$currenturl=~s/^[^\/]+//; |
$currenturl=~s/^[^\/]+//; |
Line 224 sub handler {
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Line 280 sub handler {
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# |
# |
unless (&Apache::lonnet::is_on_map($currenturl)) { |
unless (&Apache::lonnet::is_on_map($currenturl)) { |
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)) { |
$last=$hash{'last_known'}; |
$last=$hash{'last_known'}; |
untie(%hash); |
untie(%hash); |
} |
} |
if ($last) { |
if ($last) { |
$currenturl=&Apache::lonnet::clutter((split(/\_\_\_/,$last))[1]); |
$currenturl=&Apache::lonnet::clutter((&Apache::lonnet::decode_symb($last))[2]); |
} else { |
} else { |
$r->content_type('text/html'); |
if ($direction eq 'return') { |
$r->header_out(Location => |
&Apache::loncommon::content_type($r,'text/html'); |
'http://'.$ENV{'HTTP_HOST'}.'/adm/noidea.html'); |
$r->header_out(Location => |
return REDIRECT; |
'http://'.$ENV{'HTTP_HOST'}.'/adm/noidea.html'); |
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return REDIRECT; |
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} else { |
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&navlaunch($r); |
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return OK; |
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} |
} |
} |
} |
} |
# ------------------------------------------- Do we have any idea where we are? |
# ------------------------------------------- Do we have any idea where we are? |
my $position; |
my $position; |
if ($position=Apache::lonnet::symbread($currenturl)) { |
if ($position=Apache::lonnet::symbread($currenturl)) { |
# ------------------------------------------------------------------------- Yes |
# ------------------------------------------------------------------------- Yes |
my ($startoutmap,$mapnum,$thisurl)=split(/\_\_\_/,$position); |
my ($startoutmap,$mapnum,$thisurl)=&Apache::lonnet::decode_symb($position); |
$cachehash{$startoutmap}{$thisurl}=$mapnum; |
$cachehash{$startoutmap}{$thisurl}=[$thisurl,$mapnum]; |
$cachehash{$startoutmap}{'last_known'}= |
$cachehash{$startoutmap}{'last_known'}= |
&Apache::lonnet::declutter($currenturl); |
[&Apache::lonnet::declutter($currenturl),$mapnum]; |
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# ============================================================ Tie the big hash |
# ============================================================ Tie the big hash |
if (tie(%hash,'GDBM_File',$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_'.&Apache::lonnet::clutter($startoutmap)}. |
my $rid=$hash{'map_pc_'.&Apache::lonnet::clutter($startoutmap)}. |
'.'.$mapnum; |
'.'.$mapnum; |
Line 259 sub handler {
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Line 320 sub handler {
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# -------------------------------------- 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) && ($next!~/\,/) && |
while (($next) && ($next!~/\,/) && |
((!$hash{'src_'.$next}) || ($hash{'randomout_'.$next})) |
((!$hash{'src_'.$next}) || |
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((!$env{'request.role.adv'}) && $hash{'randomout_'.$next})) |
&& ($safecount<10000)) { |
&& ($safecount<10000)) { |
($next,$endupmap)=&move($next,$endupmap,$direction); |
($next,$endupmap)=&move($next,$endupmap,$direction); |
$safecount++; |
$safecount++; |
Line 270 sub handler {
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Line 332 sub handler {
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@possibilities=split(/\,/,$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); |
$cachehash{$endupmap} |
$cachehash{$endupmap}{$redirecturl}= |
{&Apache::lonnet::declutter($redirecturl)} |
[$redirecturl,(split(/\./,$next))[1]]; |
=(split(/\./,$next))[1]; |
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} else { |
} else { |
# ------------------------ There are multiple possibilities for a next resource |
# ------------------------ There are multiple possibilities for a next resource |
$multichoice=1; |
$multichoice=1; |
Line 288 sub handler {
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Line 349 sub handler {
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$second.'___'.$symbSrc); |
$second.'___'.$symbSrc); |
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my ($choicemap,$choiceres)=split(/\./,$_); |
my ($choicemap,$choiceres)=split(/\./,$_); |
$cachehash |
my $map=&Apache::lonnet::declutter($hash{'src_'.$choicemap}); |
{&Apache::lonnet::declutter($hash{'src_'.$choicemap})} |
my $url=$multichoicehash{'src_'.$_}; |
{&Apache::lonnet::declutter( |
$cachehash{$map}{$url}=[$url,$choiceres]; |
$multichoicehash |
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{'src_'.$_} |
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)} |
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=$choiceres; |
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} @possibilities; |
} @possibilities; |
} |
} |
} else { |
} else { |
Line 304 sub handler {
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Line 361 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 |
$cachehash{$startoutmap}{'last_direction'}=$direction; |
$cachehash{$startoutmap}{'last_direction'}=[$direction,'notasymb']; |
foreach my $thismap (keys %cachehash) { |
foreach my $thismap (keys %cachehash) { |
&Apache::lonnet::symblist($thismap,%{$cachehash{$thismap}}); |
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}}); |
} |
} |
# ============================================== 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 |
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if ($direction eq 'forward') { |
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&Apache::lonnet::linklog($currenturl,$redirecturl); |
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} |
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if ($direction eq 'back') { |
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&Apache::lonnet::linklog($redirecturl,$currenturl); |
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} |
# ------------------------------------------------- Check for critical messages |
# ------------------------------------------------- Check for critical messages |
if ((time-$ENV{'user.criticalcheck.time'})>300) { |
if ((time-$env{'user.criticalcheck.time'})>300) { |
my @what=&Apache::lonnet::dump |
my @what=&Apache::lonnet::dump |
('critical',$ENV{'user.domain'}, |
('critical',$env{'user.domain'}, |
$ENV{'user.name'}); |
$env{'user.name'}); |
if ($what[0]) { |
if ($what[0]) { |
if (($what[0] ne 'con_lost') && |
if (($what[0] ne 'con_lost') && |
($what[0]!~/^error\:/)) { |
($what[0]!~/^error\:/)) { |
$redirecturl='/adm/email?critical=display'; |
$redirecturl='/adm/email?critical=display'; |
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$redirectsymb=''; |
} |
} |
} |
} |
&Apache::lonnet::appenv('user.criticalcheck.time'=>time); |
&Apache::lonnet::appenv('user.criticalcheck.time'=>time); |
} |
} |
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$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->header_out(Location => |
my $url='http://'.$ENV{'HTTP_HOST'}.$redirecturl; |
'http://'.$ENV{'HTTP_HOST'}.$redirecturl); |
if ($redirectsymb ne '') { $url.='?symb='.&Apache::lonnet::escape($redirectsymb); } |
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$r->header_out(Location => $url); |
return REDIRECT; |
return REDIRECT; |
} else { |
} else { |
# --------------------------------------------------------- There was a problem |
# --------------------------------------------------------- There was a problem |
$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
$r->send_http_header; |
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my %lt=&Apache::lonlocal::texthash('title' => 'End of Sequence', |
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'explain' => |
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'You have reached the end of the sequence of materials.', |
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'back' => 'Go Back', |
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'nav' => 'Navigate Course Content', |
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'wherenext' => |
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'There are several possibilities of where to go next', |
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'pick' => |
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'Please click on the the resource you intend to access', |
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'titleheader' => 'Title', |
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'type' => 'Type'); |
if ($#possibilities>0) { |
if ($#possibilities>0) { |
my $bodytag= |
my $bodytag= |
&Apache::loncommon::bodytag('Multiple Resources'); |
&Apache::loncommon::bodytag('Multiple Resources'); |
$r->print(<<ENDSTART); |
$r->print(<<ENDSTART); |
<head><title>Choose Next Location</title></head> |
<head><title>Choose Next Location</title></head> |
$bodytag |
$bodytag |
<h3>There are several possibilities of where to go next</h3> |
<h3>$lt{'wherenext'}</h3> |
<p> |
<p> |
Please click on the the resource you intend to access: |
$lt{'pick'}: |
<p> |
<p> |
<table border=2> |
<table border=2> |
<tr><th>Title</th><th>Type</th></tr> |
<tr><th>$lt{'titleheader'}</th><th>$lt{'type'}</th></tr> |
ENDSTART |
ENDSTART |
foreach (@possibilities) { |
foreach (@possibilities) { |
$r->print( |
$r->print( |
Line 355 ENDSTART
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Line 434 ENDSTART
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'</a></td><td>'.$multichoicehash{'type_'.$_}. |
'</a></td><td>'.$multichoicehash{'type_'.$_}. |
'</td></tr>'); |
'</td></tr>'); |
} |
} |
$r->print('</table></body></html>'); |
$r->print('</table>'); |
return OK; |
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} else { |
} else { |
my $bodytag=&Apache::loncommon::bodytag('No Resource'); |
my $bodytag=&Apache::loncommon::bodytag('No Resource'); |
$r->print(<<ENDNONE); |
$r->print(<<ENDNONE); |
<head><title>No Resource</title></head> |
<head><title>No Resource</title></head> |
$bodytag |
$bodytag |
<h3>Next resource could not be identified.</h3> |
<h3>$lt{'title'}</h3> |
<p>You probably are at the <b>beginning</b> or the <b>end</b> of the |
<p>$lt{'explain'}</p> |
course.</p> |
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<ul> |
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<li><a href="/adm/flip?postdata=return:">Go Back</a></li> |
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<li><a href="/adm/navmaps">Navigate Course Content</a></li> |
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</ul> |
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</body> |
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</html> |
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ENDNONE |
ENDNONE |
return OK; |
} |
} |
$r->print(<<ENDMENU); |
} |
<ul> |
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<li><a href="/adm/flip?postdata=return:">$lt{'back'}</a></li> |
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<li><a href="/adm/navmaps">$lt{'nav'}</a></li> |
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</ul></body></html> |
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ENDMENU |
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return OK; |
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} |
} 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'); |
} |
} |
} 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; |
} |
} |
} |
} |