--- rat/lonwrapper.pm 2016/11/30 17:40:39 1.49.2.3
+++ rat/lonwrapper.pm 2021/10/19 00:16:32 1.77
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Wrapper for external and binary files as standalone resources
#
-# $Id: lonwrapper.pm,v 1.49.2.3 2016/11/30 17:40:39 raeburn Exp $
+# $Id: lonwrapper.pm,v 1.77 2021/10/19 00:16:32 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -37,22 +37,29 @@ use Apache::lonlocal;
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::lonextresedit();
+use Apache::lonexttool();
+use Apache::lonhomework();
+use LONCAPA qw(:DEFAULT :match);
+use HTML::Entities();
# ================================================================ Main Handler
sub wrapper {
- my ($url,$brcrum,$absolute,$is_ext,$is_pdf,$title) = @_;
+ my ($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$linktext,$explanation,
+ $title,$width,$height) = @_;
my $forcereg;
unless ($env{'form.folderpath'}) {
$forcereg = 1;
}
-
my %lt = &Apache::lonlocal::texthash(
'noif' => 'No iframe support.',
'show' => 'Show content in pop-up window',
);
- my $anchor;
+ (undef,undef,undef,undef,undef,undef,my $clientmobile) =
+ &Apache::loncommon::decode_user_agent($r);
+
+ my ($anchor,$uselink);
if ($is_ext) {
if ($env{'form.symb'}) {
(undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'});
@@ -62,6 +69,12 @@ sub wrapper {
} elsif ($env{'form.anchor'} ne '') {
$anchor = '#'.$env{'form.anchor'};
}
+ unless (($is_pdf) && ($clientmobile)) {
+ my $hostname = $r->hostname();
+ my $lonhost = $r->dir_config('lonHostID');
+ my $ip = &Apache::lonnet::get_host_ip($lonhost);
+ $uselink = &Apache::loncommon::is_nonframeable($url,$absolute,$hostname,$ip);
+ }
}
my $noiframe = &Apache::loncommon::modal_link($url.$anchor,$lt{'show'},500,400);
@@ -73,37 +86,155 @@ sub wrapper {
$args->{'bread_crumbs'} = $brcrum;
}
if ($absolute) {
- $args->{'use_absolute'} = $absolute;
+ $args->{'use_absolute'} = $absolute;
+ }
+ if ($env{'form.only_body'}) {
+ $args->{'only_body'} = $env{'form.only_body'};
+ }
+
+ my ($countdown,$donemsg,$headjs);
+ if (($exttool) && (&Apache::lonnet::EXT('resource.0.gradable') =~ /^yes$/i)) {
+ $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',$url);
+ if ($env{'form.markaccess'}) {
+ my $symb=&Apache::lonnet::symbread($url);
+ my @interval=&Apache::lonnet::EXT('resource.0.interval',$symb);
+ my ($timelimit) = split(/_/,$interval[0]);
+ my $setres = &Apache::lonnet::set_first_access($interval[1],$timelimit);
+ if ($setres eq 'ok') {
+ delete($env{'form.markaccess'});
+ }
+ } elsif ($env{'form.LC_interval_done'} eq 'true') {
+ my $symb=&Apache::lonnet::symbread($url);
+ if ($symb) {
+ (my $donebuttonresult,$donemsg) = &Apache::lonhomework::zero_timer($symb);
+ undef($env{'form.LC_interval_done'});
+ undef($env{'form.LC_interval_done_proctorpass'});
+ }
+ }
+ my ($status,$result,$resource_due) =
+ &Apache::lonexttool::gradabletool_access_check();
+ undef($Apache::lonhomework::browse);
+ if ($status eq 'CAN_ANSWER') {
+ if ($resource_due) {
+ my $time_left = $resource_due - time();
+ if ($resource_due && ($time_left > 0)) {
+ $countdown ='
+'."\n".
+ &Apache::lonhtmlcommon::set_due_date($resource_due);
+ }
+ }
+ } else {
+ if ($status eq 'SHOW_ANSWER') {
+ $result = &Apache::lonexttool::display_score().
+ &Apache::lonfeedback::list_discussion('tool','OPEN');
+ }
+ return &Apache::loncommon::start_page('Menu',undef,$args).
+ $result.
+ &Apache::loncommon::end_page();
+ }
+ }
+
+#
+# Where iframe is in use, if window.onload() executes before the custom resize function
+# has been defined (jQuery), two global javascript vars (LCnotready and LCresizedef)
+# are used to ensure document.ready() triggers a call to resize, so the iframe contents
+# do not obscure the Functions menu.
+#
+
+ unless ($clientmobile || ($exttool eq 'window') || ($exttool eq 'tab') || $uselink) {
+ $headjs = '
+'."\n";
}
- my $startpage = &Apache::loncommon::start_page('Menu',undef,$args);
+ my $startpage = &Apache::loncommon::start_page('Menu',$headjs,$args).$countdown.$donemsg;
my $endpage = &Apache::loncommon::end_page();
- if ($env{'browser.mobile'}) {
+ if (($uselink) && ($title eq '')) {
+ if ($env{'form.symb'}) {
+ $title=&Apache::lonnet::gettitle($env{'form.symb'});
+ } else {
+ my $symb=&Apache::lonnet::symbread($r->uri);
+ if ($symb) {
+ $title=&Apache::lonnet::gettitle($symb);
+ }
+ }
+ }
+ if ($clientmobile || ($exttool eq 'window') || ($exttool eq 'tab')) {
my $output = $startpage;
if ($is_pdf) {
- if ($title eq '') {
- $title = $env{'form.title'};
- if ($title eq '') {
- unless ($env{'request.enc'}) {
- ($title) = ($url =~ m{/([^/]+)$});
- $title =~ s/(\?[^\?]+)$//;
- }
- }
+ $linktext = &mt('Link to PDF (for mobile devices)');
+ $output .= &create_link($url,$anchor,$title,$linktext);
+ } elsif (($exttool eq 'window') || ($exttool eq 'tab')) {
+ if ($linktext eq '') {
+ $linktext = &mt('Launch External Tool');
+ }
+ $url = &HTML::Entities::encode($url,'"<>&');
+ if ($exttool eq 'tab') {
+ $output .= '';
+ } else {
+ $output .= <<"ENDLINK";
+
+
+ENDLINK
}
- unless ($title eq '') {
- $output .= $title.'
';
+ if ($explanation ne '') {
+ $output .= ''.$explanation.'
';
+ }
+ if (&Apache::lonnet::EXT('resource.0.gradable')) {
+ $output .= &Apache::lonfeedback::list_discussion('tool','OPEN');
}
- $output .= ''.&mt('Link to PDF (for mobile devices)').'';
} else {
- $output .= ''."\n".
- '\n".
- "
\n";
+ if ($uselink) {
+ $linktext = &mt('Link to resource');
+ $output .= &create_link($url,$anchor,$title,$linktext);
+ } else {
+ my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
+ $output .= ''."\n".
+ '\n".
+ "
\n";
+ }
}
$output .= $endpage;
return $output;
+ } elsif ($uselink) {
+ $linktext = &mt('Link to resource');
+ return $startpage.&create_link($url,$anchor,$title,$linktext).$endpage;
} else {
my $offset = 5;
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['inhibitmenu']);
@@ -132,21 +263,54 @@ sub wrapper {
var pos = height + hdrtop + offset;
\$('.LC_iframecontainer').css('top', pos);
});
+ LCresizedef = 1;
+ if (LCnotready == 1) {
+ LCnotready = 0;
+ \$(window).trigger('resize');
+ }
});
- window.onload = function(){ \$(window).trigger('resize') };
+ window.onload = function(){
+ if (LCresizedef) {
+ LCnotready = 0;
+ \$(window).trigger('resize');
+ } else {
+ LCnotready = 1;
+ }
+ };
SCRIPT
# javascript will position the iframe if window was resized (or zoomed)
+ my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
return <
-
+
$endpage
ENDFRAME
}
}
+sub create_link {
+ my ($url,$anchor,$title,$linktext) = @_;
+ my $shownlink;
+ if ($title eq '') {
+ $title = $env{'form.title'};
+ if ($title eq '') {
+ unless ($env{'request.enc'}) {
+ ($title) = ($url =~ m{/([^/]+)$});
+ $title =~ s/(\?[^\?]+)$//;
+ }
+ }
+ }
+ unless ($title eq '') {
+ $shownlink = ''.$title.'
';
+ }
+ my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
+ $shownlink .= ''.$linktext.'';
+ return $shownlink;
+}
+
sub handler {
my $r=shift;
&Apache::loncommon::content_type($r,'text/html');
@@ -155,20 +319,47 @@ sub handler {
return OK if $r->header_only;
my $url = $r->uri;
- my ($is_ext,$brcrum,$absolute,$is_pdf);
+ my ($is_ext,$brcrum,$absolute,$is_pdf,$exttool,$cdom,$cnum,$hostname,
+ $linktext,$explanation,$width,$height);
for ($url){
s|^/adm/wrapper||;
- $is_ext = $_ =~ s|^/ext/|http://|;
- s|http://https://|https://|;
- s|:|:|g;
+ $is_ext = $_ =~ s|^/ext/|http://|;
+ s|http://https://|https://| if ($is_ext);
+ s|:|:|g;
}
if ($url =~ /\.pdf$/i) {
$is_pdf = 1;
+ } elsif ($url =~ m{^/adm/($match_domain)/($match_courseid)/(\d+)/ext\.tool$}) {
+ $cdom = $1;
+ $cnum = $2;
+ my $marker = $3;
+ $exttool = 'iframe';
+ my $exttoolremote;
+ my %toolhash = &Apache::lonnet::get('exttool_'.$marker,['target','linktext','explanation','id','width','height'],
+ $cdom,$cnum);
+ if ($toolhash{'id'}) {
+ my %ltitools = &Apache::lonnet::get_domain_lti($cdom,'consumer');
+ if (ref($ltitools{$toolhash{'id'}}) eq 'HASH') {
+ $exttoolremote = $ltitools{$toolhash{'id'}}{'url'};
+ }
+ }
+ if ($toolhash{'target'} eq 'window') {
+ $exttool = 'window';
+ $width = $toolhash{'width'};
+ $height = $toolhash{'height'};
+ } elsif ($toolhash{'target'} eq 'tab') {
+ $exttool = 'tab';
+ }
+ if (($exttool eq 'window') || ($exttool eq 'tab')) {
+ $linktext = $toolhash{'linktext'};
+ $explanation = $toolhash{'explanation'};
+ } elsif (($exttoolremote =~ /^http:/) && ($ENV{'SERVER_PORT'} == 443)) {
+ $exttool = 'tab';
+ }
}
-
- if ($is_ext) {
+ if (($is_ext) || ($exttool)) {
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['forceedit','register','folderpath','symb','idx','title','anchor']);
if (($env{'form.forceedit'}) &&
@@ -185,16 +376,27 @@ sub handler {
$url .= '#'.$env{'form.anchor'};
}
}
+ my $type = 'ext';
+ if ($exttool) {
+ $type = 'tool';
+ } elsif (($url =~ /^http:/) && ($ENV{'SERVER_PORT'} == 443)) {
+ $hostname = $r->hostname();
+ }
$r->print(
&Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
$env{'form.symb'},
- $env{'form.idx'}));
+ $env{'form.idx'},$type,$cdom,
+ $cnum,$hostname));
return OK;
} elsif ($env{'form.folderpath'} =~ /^supplemental/) {
my $crstype = &Apache::loncommon::course_type();
my $title = $env{'form.title'};
if ($title eq '') {
- $title = &mt('External Resource');
+ if ($is_ext) {
+ $title = &mt('External Resource');
+ } else {
+ $title = &mt('External Tool');
+ }
}
$brcrum =
&Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
@@ -204,7 +406,7 @@ sub handler {
#
# Actual URL
#
- if ($url=~/$LONCAPA::assess_re/) {
+ if (($url=~/$LONCAPA::assess_re/) && (!$exttool)) {
#
# This is uploaded homework
#
@@ -214,7 +416,7 @@ sub handler {
#
# This is not homework
#
- if ($is_ext) {
+ if (($is_ext) || ($exttool)) {
$absolute = $env{'request.use_absolute'};
$ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
$ENV{'QUERY_STRING'} =~ s/\&$//;
@@ -225,9 +427,12 @@ sub handler {
}
# encrypt url if not external
- &Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ;
+ unless ($is_ext) {
+ &Apache::lonenc::check_encrypt(\$url);
+ }
- $r->print( wrapper($url,$brcrum,$absolute,$is_ext,$is_pdf) );
+ $r->print( wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,
+ $linktext,$explanation,undef,$width,$height) );
} # not just the menu
@@ -254,14 +459,21 @@ described at http://www.lon-capa.org.
=over
-=item wrapper($url,$brcrum,$absolute,$is_ext,$is_pdf,$title))
+=item wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$linktext,$explanation,$title,$width,$height)
=over
+=item $r
+
+request object
+
=item $url
-url to display by including in an iframe within a
-LON-CAPA page which has a standard LON-CAPA inline menu.
+url to display either by including in an iframe within a
+LON-CAPA page which has a standard LON-CAPA inline menu,
+or in some cases launched in a separate tab or window,
+launched via a link in a LON-CAPA page with standard inline
+menu.
=item $brcrum
@@ -296,20 +508,69 @@ true if URL is for an external resource.
true if URL is for a PDF (based on file extension).
+=item $exttool
+
+If URL is for an External Tool, will contain the target type: iframe, window or tab.
+
+=item $linktext
+
+optional. If URL is for an External Tool, and target type is window or tab,
+then the link text may be an option set in the course for each tool instance,
+or may be a default defined in the domain for all instances of the tool.
+
+=item $explanation
+
+optional. If URL is for an External Tool, and target type is window or tab,
+then the explanation is an option set in the course for each tool instance,
+or may be a default defined in the domain for all instances of the tool.
+
=item $title
-optional. If wrapped item is a PDF, and $env{'browser.mobile'}
-is true, a link to a PDF is shown. The "title" will be displayed
+optional. If wrapped item is a PDF, and $clientmobile is true,
+a link to a PDF is shown. The "title" will be displayed
above the link, but if not provided as an arg, $env{'form.title'}
will be used, otherwise, the filename will be displayed (unless
hidden URL set for the resource).
+=item $width
+
+optional. If URL is for an External Tool, and target type is window,
+then a default width may have been defined in the domain for all instances of
+the tool. If so, that width will be used for the window opened (via a link)
+to launch the external tool.
+
+=item $height
+
+optional. If URL is for an External Tool, and target type is window,
+then a default height may have been defined in the domain for all instances of
+the tool. If so, that height will be used for the window opened (via a link)
+to launch the external tool.
+
=back
Returns markup for the entire page.
=item handler()
+Content handler for requests for: /adm/wrapper/...
+used for content to be displayed in an iframe, or launched in a separate tab
+or window via a link. The target URL is extracted from the requested URL, by
+removing the /adm/wrapper prefix.
+
+The target URL will typically be a PDF served from the current server, an
+external resource URL served from a different server, or an external tool
+(from an LTI Provider) launched from LON-CAPA (as LTI Consumer) and launched
+via a link.
+
+If the request included forceedit in the query string, and the requester has
+rights to modify course content, then the editor will be didplayed to allow
+changes to be made to the resource (e.g., change the URL of the external resource,
+or change the setting for the external tool instance.
+
+If not in edit mode, then the wrapper() subroutine will be called to generate the
+standard LON-CAPA inline menu, and then either a link to launch a separate tab or
+window, or an iframe to display the content inline.
+
=back
=cut