--- loncom/interface/londocs.pm	2007/06/13 23:44:10	1.276
+++ loncom/interface/londocs.pm	2007/06/29 19:51:06	1.278.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: londocs.pm,v 1.276 2007/06/13 23:44:10 albertel Exp $
+# $Id: londocs.pm,v 1.278.2.2 2007/06/29 19:51:06 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -904,15 +904,16 @@ sub store_template {
 # Imports the given (name, url) resources into the course
 # coursenum, coursedom, and folder must precede the list
 sub group_import {
-    my $coursenum = shift;
-    my $coursedom = shift;
-    my $folder = shift;
-    my $container = shift;
-    my $caller = shift;
-    while (@_) {
-	my $name = shift;
-	my $url = shift;
-        if (($url =~ m{^/uploaded/\Q$coursedom\E/\Q$coursenum\E/(default_\d+\.)(page|sequence)$}) && ($caller eq 'londocs')) {
+    my ($coursenum, $coursedom, $folder, $container, $caller, @files) = @_;
+
+    while (@files) {
+	my $name = shift(@files);
+	my $url  = shift(@files);
+	#FIXME check if file exists before overwriting, might be restoring it
+        if (($url =~ m{^/uploaded/\Q$coursedom\E/\Q$coursenum\E/(default_\d+\.)(page|sequence)$}) 
+	     && ($caller eq 'londocs')
+	     && (!&Apache::lonnet::stat_file($url))) {
+	    
             my $errtext = '';
             my $fatal = 0;
             my $newmapstr = '<map>'."\n".
@@ -966,6 +967,7 @@ sub breadcrumbs {
     my $randompick=-1;
     my $isencrypted=0;
     my $ishidden=0;
+    my $is_random_order=0;
     while (@folders) {
 	my $folder=shift(@folders);
 	my $foldername=shift(@folders);
@@ -975,7 +977,7 @@ sub breadcrumbs {
 	    &escape($folderpath);
             my $name=&unescape($foldername);
 # randompick number, hidden, encrypted is appended with ":"s to the foldername	
-            $name=~s/\:(\d*)\:(\w*)\:(\w*)$//;
+            $name=~s/\:(\d*)\:(\w*)\:(\w*):(\d*)$//;
             if ($1 ne '') { 
                $randompick=$1;
             } else {
@@ -983,6 +985,7 @@ sub breadcrumbs {
             }
             if ($2) { $ishidden=1; }
             if ($3) { $isencrypted=1; }
+            if ($4 ne '') { $is_random_order = 1; }
 	    &Apache::lonhtmlcommon::add_breadcrumb(
 		      {'href'=>$url.$cpinfo,
 		       'title'=>$name,
@@ -994,7 +997,7 @@ sub breadcrumbs {
     }
     $plain=~s/\&gt\;\s*$//;
     return (&Apache::lonhtmlcommon::breadcrumbs(undef,undef,0,'nohelp',
-					       'LC_docs_path'),$randompick,$ishidden,$isencrypted,$plain);
+					       'LC_docs_path'),$randompick,$ishidden,$isencrypted,$plain,$is_random_order);
 }
 
 sub log_docs {
@@ -1085,6 +1088,7 @@ sub docs_change_log {
     my %lt=('hiddenresource' => 'Resources hidden',
 	    'encrypturl'     => 'URL hidden',
 	    'randompick'     => 'Randomly pick',
+	    'randomorder'    => 'Randomly ordered',
 	    'set'            => 'set to',
 	    'del'            => 'deleted');
     $r->print(&Apache::loncommon::display_filter().
@@ -1167,7 +1171,7 @@ sub docs_change_log {
 	$r->print('</ul>');
 	if ($docslog{$id}{'logentry'}{'parameter_res'}) {
 	    $r->print(&LONCAPA::map::qtescape((split(/\:/,$docslog{$id}{'logentry'}{'parameter_res'}))[0]).':<ul>');
-	    foreach my $parameter ('randompick','hiddenresource','encrypturl') {
+	    foreach my $parameter ('randompick','hiddenresource','encrypturl','randomorder') {
 		if ($docslog{$id}{'logentry'}{'parameter_action_'.$parameter}) {
 		    $r->print('<li>'.
 			      &mt($lt{$parameter}.' '.$lt{$docslog{$id}{'logentry'}{'parameter_action_'.$parameter}}.' [_1]',
@@ -1209,7 +1213,7 @@ sub editor {
 	$env{'form.markedcopy_title'}=$title;
 	$env{'form.markedcopy_url'}=$url;
     }
-    my ($breadcrumbtrail,$randompick,$ishidden,$isencrypted,$plain)=&breadcrumbs($folder);
+    my ($breadcrumbtrail,$randompick,$ishidden,$isencrypted,$plain,$is_random_order)=&breadcrumbs($folder);
     $r->print($breadcrumbtrail);
     if ($fatal) {
 	   $r->print('<p><font color="red">'.$errtext.'</font></p>');
@@ -1250,6 +1254,15 @@ sub editor {
 			&remember_parms($idx,'encrypturl','del');
 		    }
 		}
+		if ($env{'form.changeparms'} eq 'randomorder') {
+		    if ($env{'form.randorder_'.$idx}) {
+			&LONCAPA::map::storeparameter($idx,'parameter_randomorder','yes','string_yesno');
+			&remember_parms($idx,'randomorder','set',$env{'form.randorder_'.$idx});
+		    } else {
+			&LONCAPA::map::delparameter($idx,'parameter_randomorder');
+			&remember_parms($idx,'randomorder','del');
+		    }
+		}
 # store the changed version
 		($errtext,$fatal)=&storemap($coursenum,$coursedom,$folder.'.'.$container);
 		if ($fatal) {
@@ -1434,24 +1447,30 @@ sub editor {
 # ---------------------------------------------------------------- Print screen
         my $idx=0;
 	my $shown=0;
-        if (($ishidden) || ($isencrypted) || ($randompick>=0)) {
+        if (($ishidden) || ($isencrypted) || ($randompick>=0) 
+	    || ($is_random_order)) {
            $r->print('<p>'.&mt('Parameters').':<ul>'.
                      ($randompick>=0?'<li>'.&mt('randomly pick [_1] resources',$randompick).'</li>':'').
+                     ($is_random_order?'<li>'.&mt('contents randomly ordered').'</li>':'').
                      ($ishidden?'<li>'.&mt('contents hidden').'</li>':'').
                      ($isencrypted?'<li>'.&mt('URLs hidden').'</li>':'').
                      '</ul></p>');
-        }                                                                                                     
+        }
         if ($randompick>=0) {
            $r->print('<p>'.&mt('Caution: this folder is set to randomly pick a subset of resources. Adding or removing resources from this folder will change the set of resources that the students see, resulting in spurious or missing credit for completed problems, not limited to ones you modify. Do not modify the contents of this folder if it is in active student use.').'</p>');
         }
+        if ($is_random_order) {
+           $r->print('<p>'.&mt('Caution: this folder is set to randomly order its contents. Adding or removing resources from this folder will change the order of resources shown. Do not modify the contents of this folder if it is in active student use.').'</p>');
+        }
         $r->print('<table>');
-        foreach (@LONCAPA::map::order) {
-           my ($name,$url)=split(/\:/,$LONCAPA::map::resources[$_]);
+        foreach my $res (@LONCAPA::map::order) {
+           my ($name,$url)=split(/\:/,$LONCAPA::map::resources[$res]);
 	   $name=&LONCAPA::map::qtescape($name);
 	   $url=&LONCAPA::map::qtescape($url);
            unless ($name) {  $name=(split(/\//,$url))[-1]; }
            unless ($name) { $idx++; next; }
-           $r->print(&entryline($idx,$name,$url,$folder,$allowed,$_,$coursenum));
+           $r->print(&entryline($idx,$name,$url,$folder,$allowed,$res,
+				$coursenum));
            $idx++;
 	   $shown++;
         }
@@ -1465,11 +1484,19 @@ sub editor {
 <input type="hidden" name="markedcopy_url" value="$env{'form.markedcopy_url'}" />
 <input type="hidden" name="markedcopy_title" value="$env{'form.markedcopy_title'}" />
 ENDPASTE
-            $r->print(
-	   '<input type="submit" name="pastemarked" value="'.&mt('Paste').
-		      '" /> '.&Apache::loncommon::filedescription(
-		(split(/\./,$env{'form.markedcopy_url'}))[-1]).': '.
-		      $env{'form.markedcopy_title'});
+            $r->print('<input type="submit" name="pastemarked" value="'.&mt('Paste').'" /> ');
+
+	    my $type;
+	    if ($env{'form.markedcopy_url'} =~ m{^/adm/wrapper/ext}) {
+		$type = &mt('External Resource');
+		$r->print($type.': '. $env{'form.markedcopy_title'});
+	    }  else {
+		my $extension = (split(/\./,$env{'form.markedcopy_url'}))[-1];
+		my $type = &Apache::loncommon::filedescription($extension);
+		my $icon = '<img src="'.&Apache::loncommon::icon($extension).
+		    '" class="LC_icon" />';
+		$r->print($icon.$type.': '. $env{'form.markedcopy_title'});
+	    }
             if ($container eq 'page') {
 		$r->print(<<PAGEINFO);
 <input type="hidden" name="pagepath" value="$env{'form.pagepath'}" />
@@ -1867,7 +1894,7 @@ END
 	    $url.=(($url=~/\?/)?'&':'?').'symb='.&escape($symb);
 	}
     }
-    my $parameterset='&nbsp;';
+    my ($parameterset,$rand_order_text) = ('&nbsp;', '&nbsp;');
     if ($isfolder || $extension eq 'sequence') {
 	my $foldername=&escape($foldertitle);
 	my $folderpath=$env{'form.folderpath'};
@@ -1879,7 +1906,9 @@ END
                                                .':'.((&LONCAPA::map::getparameter($orderidx,
                                               'parameter_hiddenresource'))[0]=~/^yes$/i)
                                                .':'.((&LONCAPA::map::getparameter($orderidx,
-                                              'parameter_encrypturl'))[0]=~/^yes$/i);
+                                              'parameter_encrypturl'))[0]=~/^yes$/i)
+                                               .':'.((&LONCAPA::map::getparameter($orderidx,
+                                              'parameter_randomorder'))[0]=~/^yes$/i);
 	$url.='folderpath='.&escape($folderpath).$cpinfo;
 	$parameterset='<label>'.&mt('Randomly Pick: ').
 	    '<input type="text" size="4" onChange="this.form.changeparms.value='."'randompick'".';this.form.submit()" name="randpick_'.$orderidx.'" value="'.
@@ -1888,6 +1917,10 @@ END
                                               '" />'.
 '<font size="-2"><a href="javascript:void(0)">'.&mt('Save').'</a></font></label>';
        
+	my $ro_set=
+	    ((&LONCAPA::map::getparameter($orderidx,'parameter_randomorder'))[0]=~/^yes$/i?' checked="checked"':'');
+	$rand_order_text ='
+<nobr><label><input type="checkbox" name="randorder_$orderidx" onClick="this.form.changeparms.value=\'randomorder\';this.form.submit()" '.$ro_set.' /> '.&mt('Random Order').' </label></nobr>';
     }
     if ($ispage) {
         my $pagename=&escape($pagetitle);
@@ -1916,14 +1949,16 @@ END
  			      'hd' => 'Hidden',
  			      'ec' => 'URL hidden');
 	my $enctext=
-	    ((&LONCAPA::map::getparameter($orderidx,'parameter_encrypturl'))[0]=~/^yes$/i?' checked="1"':'');
+	    ((&LONCAPA::map::getparameter($orderidx,'parameter_encrypturl'))[0]=~/^yes$/i?' checked="checked"':'');
 	my $hidtext=
-	    ((&LONCAPA::map::getparameter($orderidx,'parameter_hiddenresource'))[0]=~/^yes$/i?' checked="1"':'');
+	    ((&LONCAPA::map::getparameter($orderidx,'parameter_hiddenresource'))[0]=~/^yes$/i?' checked="checked"':'');
+
 	$line.=(<<ENDPARMS);
 <td bgcolor="#BBBBFF"><font size='-2'>
 <nobr><label><input type="checkbox" name="hidprs_$orderidx" onClick="this.form.changeparms.value='hiddenresource';this.form.submit()" $hidtext /> $lt{'hd'}</label></nobr></td>
 <td bgcolor="#BBBBFF"><font size='-2'>
 <nobr><label><input type="checkbox" name="encprs_$orderidx" onClick="this.form.changeparms.value='encrypturl';this.form.submit()" $enctext /> $lt{'ec'}</label></nobr></td>
+<td bgcolor="#BBBBFF"><font size="-2">$rand_order_text</font></td>
 <td bgcolor="#BBBBFF"><font size="-2">$parameterset</font></td>
 ENDPARMS
     }