--- rat/lonwrapper.pm	2008/01/15 15:23:28	1.27
+++ rat/lonwrapper.pm	2016/11/29 19:53:58	1.54
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Wrapper for external and binary files as standalone resources
 #
-# $Id: lonwrapper.pm,v 1.27 2008/01/15 15:23:28 www Exp $
+# $Id: lonwrapper.pm,v 1.54 2016/11/29 19:53:58 damieng Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -26,80 +26,126 @@
 # http://www.lon-capa.org/
 #
 
+
 package Apache::lonwrapper;
 
 use strict;
 use Apache::Constants qw(:common);
-use Apache::lonnet;
-use Apache::lonxml();
 use Apache::lonenc();
-use Apache::lonmenu();
+use Apache::lonnet;
+use Apache::lonlocal;
+use Apache::loncommon();
+use Apache::lonhtmlcommon();
+use Apache::lonextresedit();
+use Apache::lonexttool();
+use LONCAPA qw(:DEFAULT :match);;
 
 # ================================================================ Main Handler
-
-sub simple_menu {
-#
-# Producing the menu buttons
-#
-    return &Apache::loncommon::start_page('Menu',undef,
-					  {'only_body' => 1,
-					   'bgcolor'   => '#FFFFFF',}).
-	&Apache::lonmenu::menubuttons(1,'web',1).
-	&Apache::loncommon::end_page();
-}
-
-
 sub wrapper {
-    my ($topurl,$bottomurl) = @_;
+    my ($url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$title) = @_;
 
-    if ($env{'browser.interface'} eq 'textual') {
-#
-# ssi-based rendering for text-based interface
-#
-	return 
-	    &Apache::loncommon::start_page('Menu',undef,
-					  {'bgcolor'        => '#FFFFFF',
-					   'force_register' => 1,
-				       }).
-	    &Apache::lonnet::ssi_body($bottomurl).
-	    &Apache::loncommon::end_page();
+    my $forcereg;
+    unless ($env{'form.folderpath'}) {
+        $forcereg = 1;
     }
-
-
-    my %layout = ('border' => 0);
-    if ($env{'environment.remote'} eq 'off') {
-	$layout{'rows'} = "200,*";
-    } else {
-	$layout{'rows'} = "1,*";
-	$topurl = "/adm/rat/empty.html";
+    my %lt = &Apache::lonlocal::texthash(
+                                          'noif' => 'No iframe support.',
+                                          'show' => 'Show content in pop-up window',
+                                        );
+
+    my $anchor;
+    if ($is_ext) {
+        if ($env{'form.symb'}) {
+            (undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'});
+            if ($res =~ /(#[^#]+)$/) {
+                $anchor = $1;
+            }
+        } elsif ($env{'form.anchor'} ne '') {
+            $anchor = '#'.$env{'form.anchor'};
+        }
     }
 
-    my $start_page = 
-	&Apache::loncommon::start_page(undef,undef,
-				       {'force_register' => 1,
-					'frameset'       => 1,
-					'add_entries'    => \%layout, });
+    my $noiframe = &Apache::loncommon::modal_link($url.$anchor,$lt{'show'},500,400);
+    my $args = {'bgcolor' => '#FFFFFF'};
+    if ($forcereg) {
+        $args->{'force_register'} = $forcereg;
+    }
+    if (ref($brcrum) eq 'ARRAY') {
+        $args->{'bread_crumbs'} = $brcrum;
+    }
+    if ($absolute) {
+        $args->{'use_absolute'} = $absolute; 
+    }
 
-    my $end_page = 
-	&Apache::loncommon::end_page({'frameset' => 1});
+    my $startpage = &Apache::loncommon::start_page('Menu',undef,$args);
+    my $endpage = &Apache::loncommon::end_page();
     
-    foreach my $url ($topurl,$bottomurl) {
-	if ($url !~ /^http:/) {
-	    $url = &Apache::lonenc::check_encrypt($url);
-	}
-    }
-#
-# frame-based rendering for graphical interface
-#
-    my $result =<<ENDDOCUMENT;
-$start_page
-test
-<frame src="$topurl" />
-<frame src="$bottomurl" />
-$end_page
-ENDDOCUMENT
-
-    return $result;
+    if (($env{'browser.mobile'}) || ($exttool eq 'window')) {
+        my $output = $startpage;
+        if ($is_pdf) {
+            if ($title eq '') {
+                $title = $env{'form.title'};
+                if ($title eq '') {
+                    unless ($env{'request.enc'}) {
+                        ($title) = ($url =~ m{/([^/]+)$});
+                        $title =~ s/(\?[^\?]+)$//;
+                    }
+                }
+            }
+            unless ($title eq '') {
+                $output .= $title.'<br />';
+            }
+            $output .= '<a href="'.$url.'">'.&mt('Link to PDF (for mobile devices)').'</a>';
+        } elsif ($exttool eq 'window') {
+            $output .= '<div>'.
+                       '<a href="'.$url.'" target="LC_LTI" style="padding:0;clear:both;margin:0;border:0">'.
+                       &mt('Launch External Tool').'</a>'.
+                       '</div>';
+        } else {
+            $output .= '<div style="overflow:scroll; -webkit-overflow-scrolling:touch;">'."\n".
+                       '<iframe src="'.$url.$anchor.'" height="100%" width="100%" frameborder="0">'."\n".
+                       "$lt{'noif'} $noiframe\n".
+                       "</iframe>\n".
+                       "</div>\n";
+        }
+        $output .= $endpage;
+        return $output;
+    } else {
+        my $script = &Apache::lonhtmlcommon::scripttag(<<SCRIPT);
+        \$(document).ready( function() {
+            \$(window).unbind('resize').resize(function(){
+                var header = null;
+                var offset = 5;
+                var height = 0;
+                var hdrtop = 0;
+                if (\$('div.LC_head_subbox:first').length) {
+                    header = \$('div.LC_head_subbox:first');
+                    offset = 9;
+                } else {
+                    if (\$('#LC_breadcrumbs').length) {
+                        header = \$('#LC_breadcrumbs');
+                    }
+                }
+                if (header != null && header.length) {
+                    height = header.height();
+                    hdrtop = header.position().top;
+                }
+                var pos = height + hdrtop + offset;
+                \$('.LC_iframecontainer').css('top', pos);
+            });
+        });
+        window.onload = function(){  \$(window).trigger('resize') };
+SCRIPT
+        # javascript will position the iframe if window was resized (or zoomed)
+        return <<ENDFRAME;
+        $startpage
+        $script
+        <div class="LC_iframecontainer">
+            <iframe src="$url$anchor">$lt{'noif'} $noiframe</iframe>
+        </div>
+        $endpage
+ENDFRAME
+    }
 }
 
 sub handler {
@@ -109,51 +155,185 @@ sub handler {
 
     return OK if $r->header_only;
 
-    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
-					    ['wrapperdisplay']);
-    if ($env{'form.wrapperdisplay'} eq 'menu') {
-	$r->print(&simple_menu());
-	return OK;
-    }
-
-    my $orgurl=$r->uri;
-    my $url=$orgurl;
-    $orgurl.=(($orgurl=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
-    $orgurl.=(($orgurl=~/\?/)?'&':'?').'wrapperdisplay=menu';
-    $url=~s/^\/adm\/wrapper//;
-    my $is_ext = $url =~ m|^/ext/|;
-    $url=~s{^/ext/}{http://};
-    $url=~s|http://https://|https://|;
-    $url=~s|&colon;|:|g;
+    my $url = $r->uri;
+    my ($is_ext,$brcrum,$absolute,$is_pdf,$exttool,$cdom,$cnum);
+
+    for ($url){
+        s|^/adm/wrapper||;
+        $is_ext = $_ =~ s|^/ext/|http://|;         
+        s|http://https://|https://|;
+        s|&colon;|:|g;              
+    }
+
+
+    if ($url =~ /\.pdf$/i) {
+        $is_pdf = 1;
+    } elsif ($url =~ m{^/adm/($match_domain)/($match_courseid)/(\d+)/exttools?$}) {
+        $cdom = $1;
+        $cnum = $2;
+        my $marker = $3;
+        $exttool = 'iframe';
+        my %toolhash = &Apache::lonnet::get('exttool_'.$marker,['target'],$cdom,$cnum);
+        if ($toolhash{'target'} eq 'window') {
+           $exttool = 'window'; 
+        }
+    }
+    if (($is_ext) || ($exttool)) {
+        &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+            ['forceedit','register','folderpath','symb','idx','title','anchor']);
+        if (($env{'form.forceedit'}) &&
+            (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
+            (($env{'form.folderpath'} =~ /^supplemental/) ||
+             ($env{'form.symb'} =~ /^uploaded/))) {
+            if ($env{'form.symb'}) {
+                (undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'});
+                if ($res =~ /(#[^#]+)$/) {
+                    $url .= $1;
+                }
+            } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
+                if ($env{'form.anchor'} ne '') {
+                    $url .= '#'.$env{'form.anchor'};
+                }
+            }
+            my $type = 'ext';
+            my %ltitools;
+            if ($exttool) {
+                $type = 'tool';
+                %ltitools = &Apache::lonnet::get_domain_ltitools($cdom);
+            }
+            $r->print(
+                &Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
+                                                       $env{'form.symb'},
+                                                       $env{'form.idx'},$type,$cdom,
+                                                       $cnum,\%ltitools));
+            return OK;
+        } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
+            my $crstype = &Apache::loncommon::course_type();
+            my $title = $env{'form.title'};
+            if ($title eq '') {
+                if ($is_ext) {
+                    $title = &mt('External Resource');
+                } else {
+                    $title = &mt('External Tool');
+                }
+            }
+            $brcrum =
+                &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
+        }
+    }
+
 #
 # Actual URL
 #
-    if ($url=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
+    if ($url=~/$LONCAPA::assess_re/) {
 #
 # This is uploaded homework
 #
-	$env{'request.state'}='uploaded';
-	&Apache::lonhomework::renderpage($r,$url);
+        $env{'request.state'}='uploaded';
+        &Apache::lonhomework::renderpage($r,$url);
     } else {
 #
 # This is not homework
 #
-	if ($is_ext) {
-	    $ENV{'QUERY_STRING'}=~s/(^|\&)symb=[^\&]*/$1/;
-	}
-	$url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'}; 
-	# reappend the query arguments
-	$r->print(&wrapper($orgurl,$url));
+        if (($is_ext) || ($exttool)) {
+            $absolute = $env{'request.use_absolute'};
+            $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
+            $ENV{'QUERY_STRING'} =~ s/\&$//;
+        }
+
+        unless ($ENV{'QUERY_STRING'} eq '') {
+            $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
+        }
+
+        # encrypt url if not external
+        unless ($is_ext || $exttool) {
+            &Apache::lonenc::check_encrypt(\$url);
+        }
+
+        $r->print( wrapper($url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool) );
+
     } # not just the menu
+    
     return OK;
 } # handler
 
 1;
 __END__
 
+=pod
+
+=head1 NAME
+
+Apache::lonwrapper - External and binary file management.
+
+=head1 SYNOPSIS
+
+Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+=head1 Subroutines
+
+=over
+
+=item wrapper($url,$brcrum,$absolute,$is_ext,$is_pdf,$title))
+
+=over
+
+=item $url
+
+url to display by including in an iframe within a
+LON-CAPA page which has a standard LON-CAPA inline menu.
+
+=item $brcrum
+
+breadcrumbs for unregistered urls
+(i.e., external resources in Supplemental Content).
+
+=item $absolute
+
+contains protocol (http or https) followed by
+the hostname, if menu items in the standard LON-CAPA
+interface created by the call to loncommon::start_page()
+within &wrapper() need to use absolute URLs rather than
+relative URLs.
+
+That will be the case where an external resource has been 
+served from port 80, when the server customarily serves
+requests using Apache/SSL (i.e., port 443). mod_rewrite 
+is used to switch requests for external resources and
+the syllabus: /public/<domain>/<courseid>/syllabus
+(which might also point at an external resource)
+from https:// to http:// where the the URL of the remote site 
+specified in the resource itself is http://.
+
+This is done to avoid default mixed content blocking
+in Firefox 23 and later, when serving from Apache/SSL.
+
+=item $is_ext
+
+true if URL is for an external resource.
+
+=item $is_pdf
+
+true if URL is for a PDF (based on file extension).
+
+=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
+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).
 
+=back
 
+Returns markup for the entire page.
 
+=item handler()
 
+=back
 
+=cut