--- rat/lonpageflip.pm 2013/11/28 02:23:25 1.83
+++ rat/lonpageflip.pm 2015/03/23 00:03:16 1.89
@@ -2,7 +2,7 @@
#
# Page flip handler
#
-# $Id: lonpageflip.pm,v 1.83 2013/11/28 02:23:25 raeburn Exp $
+# $Id: lonpageflip.pm,v 1.89 2015/03/23 00:03:16 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -36,6 +36,8 @@ use LONCAPA;
use Apache::Constants qw(:common :http REDIRECT);
use Apache::lonnet;
use Apache::loncommon();
+use Apache::lonuserstate;
+use Apache::lonlocal;
use HTML::TokeParser;
use GDBM_File;
@@ -267,13 +269,57 @@ sub handler {
my @possibilities=();
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['postdata']);
if (($env{'form.postdata'})&&($env{'request.course.fn'})) {
- $env{'form.postdata'}=~/(\w+)\:(.*)/;
- my $direction=$1;
- my $currenturl=$2;
+ my ($direction,$currenturl) = ($env{'form.postdata'}=~/(\w+)\:(.*)/);
if ($currenturl=~m|^/enc/|) {
- $currenturl=&Apache::lonenc::unencrypted($currenturl);
+ $currenturl=&Apache::lonenc::unencrypted($currenturl);
}
$currenturl=~s/\.\d+\.(\w+)$/\.$1/;
+ $currenturl=~s/^https?\:\/\///;
+ $currenturl=~s/^[^\/]+//;
+ my ($preupdatepos,$last,$reinitcheck);
+ if ($direction eq 'return') {
+ if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
+ &GDBM_READER(),0640)) {
+ $last=$hash{'last_known'};
+ untie(%hash);
+ }
+ }
+ if ($env{'request.course.id'}) {
+ # Check if course needs to be re-initialized
+ my $loncaparev = $r->dir_config('lonVersion');
+ ($reinitcheck,my @reinit) = &Apache::loncommon::needs_coursereinit($loncaparev);
+ if ($reinitcheck eq 'switch') {
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ $r->print(&Apache::loncommon::check_release_result(@reinit));
+ return OK;
+ } elsif ($reinitcheck eq 'update') {
+ my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ $preupdatepos = &Apache::lonnet::symbread($currenturl);
+ unless ($direction eq 'return') {
+ if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
+ &GDBM_READER(),0640)) {
+ $last=$hash{'last_known'};
+ untie(%hash);
+ }
+ }
+ my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum");
+ if ($ferr) {
+ my $requrl = $r->uri;
+ $env{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
+ $env{'user.reinit'} = 1;
+ return HTTP_NOT_ACCEPTABLE;
+ } else {
+ if ($last) {
+ my ($murl,$id,$fn)=&Apache::lonnet::decode_symb($last);
+ unless (&Apache::lonnet::symbverify($last,$fn)) {
+ undef($last);
+ }
+ }
+ }
+ }
+ }
if ($direction eq 'firstres') {
my $furl=&first_accessible_resource();
&Apache::loncommon::content_type($r,'text/html');
@@ -282,14 +328,8 @@ sub handler {
return REDIRECT;
}
- if ($direction eq 'return') {
+ if ($direction eq 'return') {
# -------------------------------------------------------- Return to last known
- my $last;
- if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
- &GDBM_READER(),0640)) {
- $last=$hash{'last_known'};
- untie(%hash);
- }
my $newloc;
if (($last) && (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db',
&GDBM_READER(),0640))) {
@@ -298,45 +338,50 @@ sub handler {
$newloc=$hash{'src_'.$id};
if ($newloc) {
if ($hash{'encrypted_'.$id}) { $newloc=&Apache::lonenc::encrypted($newloc); }
-
} else {
$newloc='/adm/navmaps';
}
untie %hash;
} else {
$newloc='/adm/navmaps';
- }
- &Apache::loncommon::content_type($r,'text/html');
- $r->header_out(Location =>
- &Apache::lonnet::absolute_url().$newloc);
+ }
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->header_out(Location =>
+ &Apache::lonnet::absolute_url().$newloc);
- return REDIRECT;
+ return REDIRECT;
}
- $currenturl=~s/^https?\:\/\///;
- $currenturl=~s/^[^\/]+//;
#
# Is the current URL on the map? If not, start with last known URL
#
+
unless (&Apache::lonnet::is_on_map($currenturl)) {
- my $last;
- if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
- &GDBM_READER(),0640)) {
- $last=$hash{'last_known'};
+ if ($preupdatepos) {
+ undef($preupdatepos);
+ } elsif (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
+ &GDBM_READER(),0640)) {
+ $last=$hash{'last_known'};
untie(%hash);
}
+ my $newloc;
if ($last) {
$currenturl=&Apache::lonnet::clutter((&Apache::lonnet::decode_symb($last))[2]);
} else {
- &Apache::loncommon::content_type($r,'text/html');
- $r->header_out(Location =>
- &Apache::lonnet::absolute_url().
- '/adm/noidea.html');
- return REDIRECT;
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->header_out(Location =>
+ &Apache::lonnet::absolute_url().
+ '/adm/navmaps');
+ return REDIRECT;
}
}
# ------------------------------------------- Do we have any idea where we are?
my $position;
- if ($position=Apache::lonnet::symbread($currenturl)) {
+ if ($preupdatepos) {
+ $position = $preupdatepos;
+ } else {
+ $position=Apache::lonnet::symbread($currenturl);
+ }
+ if ($position) {
# ------------------------------------------------------------------------- Yes
my ($startoutmap,$mapnum,$thisurl)=&Apache::lonnet::decode_symb($position);
$cachehash{$startoutmap}{$thisurl}=[$thisurl,$mapnum];
@@ -389,7 +434,7 @@ sub handler {
untie(%hash);
# --------------------------------------------------------- Store position info
$cachehash{$startoutmap}{'last_direction'}=[$direction,'notasymb'];
- foreach my $thismap (keys %cachehash) {
+ foreach my $thismap (keys(%cachehash)) {
my $mapnum=$cachehash{$thismap}->{'mapnum'};
delete($cachehash{$thismap}->{'mapnum'});
&Apache::lonnet::symblist($thismap,
@@ -404,24 +449,13 @@ sub handler {
if ($direction eq 'back') {
&Apache::lonnet::linklog($redirecturl,$currenturl);
}
-# ------------------------------------------------- Check for critical messages
- if ((time-$env{'user.criticalcheck.time'})>300) {
- my @what=&Apache::lonnet::dump
- ('critical',$env{'user.domain'},
- $env{'user.name'});
- if ($what[0]) {
- if (($what[0] ne 'con_lost') &&
- ($what[0]!~/^error\:/)) {
- $redirecturl='/adm/email?critical=display';
- $redirectsymb='';
- }
- }
- &Apache::lonnet::appenv({'user.criticalcheck.time'=>time});
- }
-
- &Apache::loncommon::content_type($r,'text/html');
- my $url=&Apache::lonnet::absolute_url().$redirecturl;
- $url = &add_get_param($url, { 'symb' => $redirectsymb});
+# ------------------------------------- Check for and display critical messages
+ my ($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;
} else {
@@ -438,7 +472,10 @@ sub handler {
'pick' =>
'Please click on the the resource you intend to access',
'titleheader' => 'Title',
- 'type' => 'Type');
+ 'type' => 'Type',
+ 'update' => 'Content updated',
+ 'expupdate' => 'As a result of a recent update to the sequence of materials, it is not possible to complete the page flip.',
+ 'gonav' => 'Go to the Contents page to select a resource to display.');
if (&Apache::loncommon::course_type() eq 'Community') {
$lt{'nav'} = &mt('Community Contents');
}
@@ -467,17 +504,38 @@ ENDSTART
}
$r->print('');
} else {
+ if ($reinitcheck) {
+ if (&Apache::loncommon::course_type() eq 'Community') {
+ $r->print(
+ &Apache::loncommon::start_page('Community Contents Updated'));
+ } else {
+ $r->print(
+ &Apache::loncommon::start_page('Course Contents Updated'));
+ }
+ $r->print(''.$lt{'update'}.'
'
+ .''.$lt{'expupdate'}.'
'
+ .$lt{'gonav'}.'
');
+ } else {
+ $r->print(
+ &Apache::loncommon::start_page('No Resource')
+ .''.$lt{'title'}.'
'
+ .''.$lt{'explain'}.'
');
+ }
+ }
+ if ((!@possibilities) && ($reinitcheck)) {
+ $r->print(
+ &Apache::lonhtmlcommon::actionbox(
+ [''.$lt{'nav'}.''
+ ]));
+ } else {
$r->print(
- &Apache::loncommon::start_page('No Resource')
- .''.$lt{'title'}.'
'
- .''.$lt{'explain'}.'
');
+ &Apache::lonhtmlcommon::actionbox(
+ [''.$lt{'back'}.'',
+ ''.$lt{'nav'}.''
+ ]));
}
- $r->print(
- &Apache::lonhtmlcommon::actionbox(
- [''.$lt{'back'}.'',
- ''.$lt{'nav'}.''
- ])
- .&Apache::loncommon::end_page());
+ $r->print(&Apache::loncommon::end_page());
+
return OK;
}
} else {