version 1.9, 2003/02/20 19:41:26
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version 1.49.2.12, 2024/07/04 02:30:39
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# |
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
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# (Edit Handler for RAT Maps |
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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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# 7/1,6/30 Gerd Kortemeyer) |
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# |
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# 7/5 Gerd Kortemeyer |
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package Apache::lonwrapper; |
package Apache::lonwrapper; |
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use strict; |
use strict; |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use Apache::lonnet(); |
use Apache::lonenc(); |
use Apache::lonxml(); |
use Apache::lonnet; |
use Apache::lonmenu; |
use Apache::lonlocal; |
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use Apache::loncommon(); |
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use Apache::lonhtmlcommon(); |
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use Apache::lonextresedit(); |
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# ================================================================ Main Handler |
# ================================================================ Main Handler |
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sub wrapper { |
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my ($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$title) = @_; |
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sub handler { |
my $forcereg; |
my $r=shift; |
unless ($env{'form.folderpath'}) { |
$r->content_type('text/html'); |
$forcereg = 1; |
$r->send_http_header; |
} |
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return OK if $r->header_only; |
my %lt = &Apache::lonlocal::texthash( |
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'noif' => 'No iframe support.', |
my $url=$r->uri; |
'show' => 'Show content in pop-up window', |
$url=~s/^\/adm\/wrapper//; |
); |
$url=~s/^\/ext\//http\:\/\//; |
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if ($url=~/^\/uploaded\//) { |
(undef,undef,undef,undef,undef,undef,my $clientmobile) = |
$url=&Apache::lonnet::tokenwrapper($url); |
&Apache::loncommon::decode_user_agent($r); |
} |
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$url.='?'.$ENV{'QUERY_STRING'}; #reappend the query arguments |
my ($anchor,$uselink,$linktext); |
my $events='onLoad="'.&Apache::lonmenu::loadevents. |
if ($is_ext) { |
'" onUnload="'.&Apache::lonmenu::unloadevents.'"'; |
if ($env{'form.symb'}) { |
my $script=&Apache::lonmenu::registerurl(1,undef); |
(undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'}); |
unless ($ENV{'browser.interface'} eq 'textual') { |
if ($res =~ /(#[^#]+)$/) { |
# |
$anchor = $1; |
# frame-based rendering for graphical interface |
} |
# |
} elsif ($env{'form.anchor'} ne '') { |
$r->print(<<ENDDOCUMENT); |
$anchor = '#'.$env{'form.anchor'}; |
<html> |
} |
<head> |
unless (($is_pdf) && ($clientmobile)) { |
$script |
my $hostname = $r->hostname(); |
</head> |
my $lonhost = $r->dir_config('lonHostID'); |
<frameset rows="1,*" border=0 $events> |
my $ip = &Apache::lonnet::get_host_ip($lonhost); |
<frame src="/adm/rat/empty.html"> |
$uselink = &Apache::loncommon::is_nonframeable($url,$absolute,$hostname,$ip); |
<frame src="$url"> |
} |
</frameset> |
} |
</html> |
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ENDDOCUMENT |
my $noiframe = &Apache::loncommon::modal_link(&HTML::Entities::encode($url.$anchor,'&<>"\''),$lt{'show'},500,400); |
} else { |
my $args = {'bgcolor' => '#FFFFFF'}; |
# |
if ($forcereg) { |
# ssi-based rendering for text-based interface |
$args->{'force_register'} = $forcereg; |
# |
} |
$r->print('<html><head>'. |
if (ref($brcrum) eq 'ARRAY') { |
&Apache::lonmenu::registerurl(1). |
$args->{'bread_crumbs'} = $brcrum; |
'</head>'. |
} |
&Apache::loncommon::bodytag(). |
if ($absolute) { |
&Apache::lonmenu::menubuttons(1). |
$args->{'use_absolute'} = $absolute; |
&Apache::lonnet::ssi_body($url).'</body></html>'); |
} |
} |
if ($env{'form.only_body'}) { |
return OK; |
$args->{'only_body'} = $env{'form.only_body'}; |
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} |
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my $headjs; |
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# |
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# Where iframe is in use, if window.onload() executes before the custom resize function |
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# has been defined (jQuery), two global javascript vars (LCnotready and LCresizedef) |
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# are used to ensure document.ready() triggers a call to resize, so the iframe contents |
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# do not obscure the Functions menu. |
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# |
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unless ($clientmobile || $uselink) { |
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$headjs = ' |
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<script type="text/javascript"> |
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// <![CDATA[ |
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var LCnotready = 0; |
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var LCresizedef = 0; |
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// ]]> |
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</script>'."\n"; |
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} |
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my $startpage = &Apache::loncommon::start_page('Menu',$headjs,$args); |
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my $endpage = &Apache::loncommon::end_page(); |
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if (($uselink) && ($title eq '')) { |
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if ($env{'form.symb'}) { |
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$title=&Apache::lonnet::gettitle($env{'form.symb'}); |
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} else { |
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my $symb=&Apache::lonnet::symbread($r->uri); |
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if ($symb) { |
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$title=&Apache::lonnet::gettitle($symb); |
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} |
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} |
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} |
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if ($clientmobile) { |
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my $output = $startpage; |
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if ($is_pdf) { |
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$linktext = &mt('Link to PDF (for mobile devices)'); |
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$output .= &create_link($url,$anchor,$title,$linktext); |
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} else { |
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if ($uselink) { |
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$linktext = &mt('Link to resource'); |
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$output .= &create_link($url,$anchor,$title,$linktext); |
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} else { |
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my $dest = &HTML::Entities::encode($url.$anchor,'&<>"'); |
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$output .= '<div style="overflow:scroll; -webkit-overflow-scrolling:touch;">'."\n". |
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'<iframe src="'.$dest.'" height="100%" width="100%" frameborder="0">'."\n". |
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"$lt{'noif'} $noiframe\n". |
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"</iframe>\n". |
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"</div>\n"; |
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} |
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} |
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$output .= $endpage; |
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return $output; |
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} elsif ($uselink) { |
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$linktext = &mt('Link to resource'); |
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return $startpage.&create_link($url,$anchor,$title,$linktext).$endpage; |
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} else { |
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my $offset = 5; |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['inhibitmenu']); |
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if ($env{'form.inhibitmenu'} eq 'yes') { |
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$offset = 0; |
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} |
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my $script = &Apache::lonhtmlcommon::scripttag(<<SCRIPT); |
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\$(document).ready( function() { |
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\$(window).unbind('resize').resize(function(){ |
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var header = null; |
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var offset = $offset; |
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var height = 0; |
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var hdrtop = 0; |
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if (\$('div.LC_head_subbox:first').length) { |
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header = \$('div.LC_head_subbox:first'); |
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offset = 9; |
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} else { |
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if (\$('#LC_breadcrumbs').length) { |
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header = \$('#LC_breadcrumbs'); |
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} |
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} |
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if (header != null && header.length) { |
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height = header.height(); |
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hdrtop = header.position().top; |
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} |
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var pos = height + hdrtop + offset; |
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\$('.LC_iframecontainer').css('top', pos); |
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}); |
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LCresizedef = 1; |
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if (LCnotready == 1) { |
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LCnotready = 0; |
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\$(window).trigger('resize'); |
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} |
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}); |
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window.onload = function(){ |
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if (LCresizedef) { |
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LCnotready = 0; |
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\$(window).trigger('resize'); |
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} else { |
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LCnotready = 1; |
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} |
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}; |
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SCRIPT |
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# javascript will position the iframe if window was resized (or zoomed) |
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return <<ENDFRAME; |
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$startpage |
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$script |
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<div class="LC_iframecontainer"> |
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<iframe src="$url$anchor">$lt{'noif'} $noiframe</iframe> |
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</div> |
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$endpage |
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ENDFRAME |
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} |
} |
} |
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sub create_link { |
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my ($url,$anchor,$title,$linktext) = @_; |
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my $shownlink; |
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if ($title eq '') { |
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$title = $env{'form.title'}; |
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if ($title eq '') { |
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unless ($env{'request.enc'}) { |
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($title) = ($url =~ m{/([^/]+)$}); |
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$title =~ s/(\?[^\?]+)$//; |
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} |
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} |
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} |
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unless ($title eq '') { |
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$shownlink = '<span style="font-weight:bold;">'.$title.'</span><br />'; |
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} |
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my $dest = &HTML::Entities::encode($url.$anchor,'&<>"'); |
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$shownlink .= '<a href="'.$dest.'">'.$linktext.'</a>'; |
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return $shownlink; |
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} |
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sub handler { |
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my $r=shift; |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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return OK if $r->header_only; |
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my $url = $r->uri; |
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my ($is_ext,$brcrum,$absolute,$is_pdf,$cdom,$cnum,$hostname); |
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for ($url){ |
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s|^/adm/wrapper||; |
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$is_ext = $_ =~ s|^/ext/|http://|; |
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s|http://https://|https://| if ($is_ext); |
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s|:|:|g; |
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} |
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if ($url =~ /\.pdf$/i) { |
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$is_pdf = 1; |
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} |
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if ($is_ext) { |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, |
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['forceedit','register','folderpath','symb','idx','title','anchor']); |
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if (($env{'form.forceedit'}) && |
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(&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) && |
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(($env{'form.folderpath'} =~ /^supplemental/) || |
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($env{'form.symb'} =~ /^uploaded/))) { |
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if ($env{'form.symb'}) { |
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(undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'}); |
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if ($res =~ /(#[^#]+)$/) { |
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$url .= $1; |
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} |
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} elsif ($env{'form.folderpath'} =~ /^supplemental/) { |
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if ($env{'form.anchor'} ne '') { |
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$url .= '#'.$env{'form.anchor'}; |
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} |
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} |
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if (($url =~ /^http:/) && ($ENV{'SERVER_PORT'} == 443)) { |
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$hostname = $r->hostname(); |
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} |
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my $type = 'ext'; |
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$r->print( |
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&Apache::lonextresedit::display_editor($url,$env{'form.folderpath'}, |
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$env{'form.symb'}, |
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$env{'form.idx'},$type,$cdom, |
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$cnum,$hostname)); |
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return OK; |
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} elsif ($env{'form.folderpath'} =~ /^supplemental/) { |
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my $crstype = &Apache::loncommon::course_type(); |
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my $title = $env{'form.title'}; |
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if ($title eq '') { |
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$title = &mt('External Resource'); |
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} |
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$brcrum = |
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&Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1); |
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} |
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} |
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# |
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# Actual URL |
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# |
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if ($url=~/$LONCAPA::assess_re/) { |
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# |
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# This is uploaded homework |
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# |
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$env{'request.state'}='uploaded'; |
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&Apache::lonhomework::renderpage($r,$url); |
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} else { |
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# |
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# This is not homework |
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# |
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if ($is_ext) { |
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$absolute = $env{'request.use_absolute'}; |
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$ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/; |
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$ENV{'QUERY_STRING'} =~ s/\&$//; |
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} |
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unless ($ENV{'QUERY_STRING'} eq '') { |
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$url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'}; |
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} |
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# encrypt url if not external |
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&Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ; |
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$r->print( wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf) ); |
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} # not just the menu |
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return OK; |
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} # handler |
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1; |
1; |
__END__ |
__END__ |
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=pod |
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=head1 NAME |
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Apache::lonwrapper - External and binary file management. |
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=head1 SYNOPSIS |
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Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 Subroutines |
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=over |
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=item wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$title)) |
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=over |
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=item $r |
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request object |
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=item $url |
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url to display by including in an iframe within a |
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LON-CAPA page which has a standard LON-CAPA inline menu. |
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=item $brcrum |
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breadcrumbs for unregistered urls |
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(i.e., external resources in Supplemental Content). |
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=item $absolute |
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contains protocol (http or https) followed by |
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the hostname, if menu items in the standard LON-CAPA |
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interface created by the call to loncommon::start_page() |
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within &wrapper() need to use absolute URLs rather than |
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relative URLs. |
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That will be the case where an external resource has been |
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served from port 80, when the server customarily serves |
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requests using Apache/SSL (i.e., port 443). mod_rewrite |
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is used to switch requests for external resources and |
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the syllabus: /public/<domain>/<courseid>/syllabus |
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(which might also point at an external resource) |
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from https:// to http:// where the the URL of the remote site |
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specified in the resource itself is http://. |
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This is done to avoid default mixed content blocking |
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in Firefox 23 and later, when serving from Apache/SSL. |
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=item $is_ext |
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true if URL is for an external resource. |
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=item $is_pdf |
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true if URL is for a PDF (based on file extension). |
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=item $title |
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optional. If wrapped item is a PDF, and $clientmobile is true, |
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a link to a PDF is shown. The "title" will be displayed |
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above the link, but if not provided as an arg, $env{'form.title'} |
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will be used, otherwise, the filename will be displayed (unless |
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hidden URL set for the resource). |
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=back |
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Returns markup for the entire page. |
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=item handler() |
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=back |
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=cut |
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