--- loncom/interface/lonmenu.pm	2003/02/14 15:14:37	1.37
+++ loncom/interface/lonmenu.pm	2003/03/03 20:35:20	1.46
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines to control the menu
 #
-# $Id: lonmenu.pm,v 1.37 2003/02/14 15:14:37 www Exp $
+# $Id: lonmenu.pm,v 1.46 2003/03/03 20:35:20 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -41,6 +41,291 @@ use Apache::loncommon;
 use Apache::File;
 use vars qw(@desklines $readdesk);
 
+# ============================= This gets called at the top of the body section
+
+sub menubuttons {
+    my $forcereg=shift;
+    my $target  =shift;
+    my $registration=shift;
+    unless ($ENV{'browser.interface'} eq 'textual') { return ''; }
+# Textual display only
+    my $output=(<<ENDMAINMENU);
+<script>
+// BEGIN LON-CAPA Internal
+</script>
+<a href="/adm/menu" target="_top">Main Menu</a><br />
+<script>
+// END LON-CAPA Internal
+</script>
+ENDMAINMENU
+    if ($registration) { $output.=&innerregister($forcereg,$target); }
+    return $output."<hr />";
+}
+
+# ====================================== This gets called in the header section
+
+sub registerurl {
+    my $forcereg=shift;
+    my $target = shift;
+    my $result = '';
+    
+    if ($target eq 'edit') {
+        $result .="<script type=\"text/javascript\">\n".
+            "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
+            &Apache::loncommon::browser_and_searcher_javascript().
+                "\n</script>\n";
+    }
+    if (($ENV{'browser.interface'} eq 'textual') ||
+        ((($ENV{'request.publicaccess'}) || 
+         (!&Apache::lonnet::is_on_map($ENV{'REQUEST_URI'}))) &&
+        (!$forcereg))) {
+	return $result.
+         '<script type="text/javascript">function LONCAPAreg(){;} function LONCAPAstale(){}</script>';
+    }
+# Graphical display after login only
+    if ($Apache::lonxml::registered && !$forcereg) { return ''; }
+    $result.=&innerregister($forcereg,$target);
+    return $result;
+}
+
+# =========== This gets called in order to register a URL, both with the Remote
+# =========== and in the body of the document
+
+sub innerregister {
+    my $forcereg=shift;
+    my $target = shift;
+    my $result = '';
+
+    $Apache::lonxml::registered=1;
+
+    my $textual=($ENV{'browser.interface'} eq 'textual');
+    my $reopen=&Apache::lonmenu::reopenmenu();
+
+    my $newmail='';
+    if (&Apache::lonmsg::newmail()) { 
+       $newmail=($textual?
+ '<b><a href="/adm/communicate">You have new messages</a></b><br />':
+                          'swmenu.setstatus("you have","messages");');
+    }
+    my $timesync=($textual?'':'swmenu.syncclock(1000*'.time.');');
+# =============================================================================
+# ============================ This is for URLs that actually can be registered
+    if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
+# -- This applies to homework problems for users with grading privileges
+        my $hwkadd='';
+        if 
+      ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
+	    if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
+		$hwkadd.=&switch('','',7,1,'subm.gif','view sub','missions',
+                       "gocmd('/adm/grades','submission')",
+		       'View user submissions for this assessment resource');
+            }
+	    if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
+		$hwkadd.=&switch('','',7,2,'pgrd.gif','problem','grades',
+                       "gocmd('/adm/grades','gradingmenu')",
+                       'Modify user grades for this assessment resource');
+            }
+	    if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
+		$hwkadd.=&switch('','',7,3,'pparm.gif','problem','parms',
+                       "gocmd('/adm/parmset','set')",
+                       'Modify deadlines, etc, for this assessment resource');
+            }
+	}
+# -- End Homework
+        ###
+        ### Determine whether or not to display the 'cstr' button for this
+        ### resource
+        ###
+        my $editbutton = '';
+        if ($ENV{'user.author'}) {
+            if ($ENV{'request.role'}=~/^(ca|au)/) {
+                # Set defaults for authors
+                my ($top,$bottom) = ('con-','struct');
+                my $action = "go('/priv/".$ENV{'user.name'}."');";
+                my $cadom  = $ENV{'request.role.domain'};
+                my $caname = $ENV{'user.name'};
+                my $desc = "Enter my resource construction space";
+                # Set defaults for co-authors
+                if ($ENV{'request.role'} =~ /^ca/) { 
+                    ($cadom,$caname)=($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
+                    ($top,$bottom) = ('co con-','struct');
+                    $action = "go('/priv/".$caname."');";
+                    $desc = "Enter construction space as co-author";
+                }
+                # Check that we are on the correct machine
+                my $home = &Apache::lonnet::homeserver($caname,$cadom);
+                if ($home eq $Apache::lonnet::perlvar{'lonHostID'}) {
+                    $editbutton=&switch
+                        ('','',6,1,$top,,$bottom,$action,$desc);
+                }
+            }
+            ##
+            ## Determine if user can edit url.
+            ##
+            my $cfile='';
+            my $cfuname='';
+            my $cfudom='';
+            if ($ENV{'request.filename'}) {
+                my $file=&Apache::lonnet::declutter($ENV{'request.filename'});
+                $file=~s/^(\w+)\/(\w+)/\/priv\/$2/;
+                # Chech that the user has permission to edit this resource
+                ($cfuname,$cfudom)=&Apache::loncacc::constructaccess($file,$1);
+                if (defined($cfudom)) {
+                    if (&Apache::lonnet::homeserver($cfuname,$cfudom) 
+                        eq $Apache::lonnet::perlvar{'lonHostID'}) {
+                        $cfile=$file;
+                    }
+                }
+            }        
+            # Finally, turn the button on or off
+            if ($cfile) {
+                $editbutton=&switch
+                    ('','',6,1,'cstr.gif','edit','resource',
+                     "go('".$cfile."');","Edit this resource");
+            } elsif ($editbutton eq '') {
+                $editbutton=&clear(6,1);
+            }
+        }
+        ###
+        ###
+# Prepare the rest of the buttons
+	my $menuitems=(<<ENDMENUITEMS);
+c&3&1
+s&2&1&back.gif&backward&&gopost('/adm/flip','back:'+currentURL)&Go to the previous resource in the course sequence&1
+s&2&3&forw.gif&forward&&gopost('/adm/flip','forward:'+currentURL)&Go to the next resource in the course sequence&1
+s&6&3&catalog.gif&catalog&info&catalog_info()&Show catalog information
+s&8&1&eval.gif&evaluate&this&gopost('/adm/evaluate',currentURL)&Provide my evaluation of this resource
+s&8&2&fdbk.gif&feedback&discuss&gopost('/adm/feedback',currentURL)&Provide feedback messages or contribute to the course discussion about this resource
+s&8&3&prt.gif&prepare&printout&gopost('/adm/printout',currentURL)&Prepare a printable document
+s&9&1&sbkm.gif&set&bookmark&set_bookmark()&Set a bookmark for this resource&2
+s&9&2&vbkm.gif&view&bookmark&edit_bookmarks()&Use or edit my bookmark collection&2
+s&9&3&anot.gif&anno-&tations&annotate()&Make notes and annotations about this resource&2
+ENDMENUITEMS
+        my $buttons='';
+        foreach (split(/\n/,$menuitems)) {
+	    my ($command,@rest)=split(/\&/,$_);
+            if ($command eq 's') {
+		$buttons.=&switch('','',@rest);
+            } else {
+                $buttons.=&clear(@rest);
+            }
+        }
+        if ($textual) {
+# Registered, textual output
+            my $utility=&utilityfunctions();
+            my $form=&serverform();
+	    $result =(<<ENDREGTEXT);
+<script>
+// BEGIN LON-CAPA Internal
+$utility
+</script>
+$timesync
+$newmail
+$buttons
+$hwkadd
+$editbutton
+$form
+<script>
+//END LON-CAPA Internal
+</script>
+
+ENDREGTEXT
+# Registered, graphical output
+        } else {
+	    $result = (<<ENDREGTHIS);
+     
+<script language="JavaScript">
+// BEGIN LON-CAPA Internal
+var swmenu=null;
+
+    function LONCAPAreg() {
+	  swmenu=$reopen;
+          swmenu.clearTimeout(swmenu.menucltim);
+          $timesync
+          $newmail
+          $buttons
+	  swmenu.currentURL=window.location.pathname;
+          swmenu.reloadURL=window.location.pathname+window.location.search;
+          swmenu.currentSymb="$ENV{'request.symb'}";
+          swmenu.reloadSymb="$ENV{'request.symb'}";
+          swmenu.currentStale=0;
+          $hwkadd
+          $editbutton
+    }
+
+    function LONCAPAstale() {
+	  swmenu=$reopen
+          swmenu.currentStale=1;
+          if (swmenu.reloadURL!='' && swmenu.reloadURL!= null) { 
+             swmenu.switchbutton
+             (3,1,'reload.gif','return','location','go(reloadURL)','Return to the last known location in the course sequence');
+	  }
+          swmenu.clearbut(7,1);
+          swmenu.clearbut(7,2);
+          swmenu.clearbut(7,3);
+          swmenu.menucltim=swmenu.setTimeout(
+ 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
+ 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3);clearbut(6,1)',
+			  2000);
+
+      }
+
+// END LON-CAPA Internal
+</script>
+ENDREGTHIS
+        }
+# =============================================================================
+    } else {
+# ========================================== This can or will not be registered
+        if ($textual) {
+# Not registered, textual
+	    $result= (<<ENDDONOTREGTEXT);
+ENDDONOTREGTEXT
+        } else {
+# Not registered, graphical
+           $result = (<<ENDDONOTREGTHIS);
+
+<script language="JavaScript">
+// BEGIN LON-CAPA Internal
+var swmenu=null;
+
+    function LONCAPAreg() {
+	  swmenu=$reopen
+          $timesync
+          swmenu.currentStale=1;
+          swmenu.clearbut(2,1);
+          swmenu.clearbut(2,3);
+          swmenu.clearbut(8,1);
+          swmenu.clearbut(8,2);
+          swmenu.clearbut(8,3);
+          if (swmenu.currentURL) {
+             swmenu.switchbutton
+              (3,1,'reload.gif','return','location','go(currentURL)');
+ 	  } else {
+	      swmenu.clearbut(3,1);
+          }
+    }
+
+    function LONCAPAstale() {
+    }
+
+// END LON-CAPA Internal
+</script>
+ENDDONOTREGTHIS
+       }
+# =============================================================================
+    }
+    return $result;
+}
+
+sub loadevents() {
+    return 'LONCAPAreg();';
+}
+
+sub unloadevents() {
+    return 'LONCAPAstale();';
+}
+
 # ============================================================= Start up remote
 
 sub startupremote {
@@ -156,19 +441,24 @@ sub clear {
    } else { return ''; }
 }
 
+# ============================================ Switch a button or create a link
 # Switch acts on the javascript that is executed when a button is clicked.  
 # The javascript is usually similar to "go('/adm/roles')" or "cstrgo(..)".
+
 sub switch {
-    my ($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc)=@_;
+    my ($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc,$nobreak)=@_;
     $act=~s/\$uname/$uname/g;
     $act=~s/\$udom/$udom/g;
     unless ($ENV{'browser.interface'} eq 'textual') {
        return "\n".
  qq(window.status+='.';swmenu.switchbutton($row,$col,"$img","$top","$bot","$act","$desc"););
    } else {
+       if ($nobreak==2) { return ''; }
        my $text=$top.' '.$bot;
        $text=~s/\- //;
-       return '<br /><a href="javascript:'.$act.';">'.$text.'</a> '.$desc;
+       return "\n".($nobreak?' ':'<br />').
+        '<a href="javascript:'.$act.';" target="_top">'.$text.'</a> '.
+        ($nobreak?'':$desc);
    }
 }
 
@@ -304,6 +594,59 @@ sub footer {
 
 }
 
+sub utilityfunctions {
+    unless ($ENV{'browser.interface'} eq 'textual') { return ''; }
+    my $currenturl=$ENV{'REQUEST_URI'};
+    my $currentsymb=$ENV{'request.symb'};
+return (<<ENDUTILITY)
+
+    var currentURL="$currenturl";
+    var reloadURL="$currenturl";
+    var currentSymb="$currentsymb";
+
+function go(url) {
+   if (url!='' && url!= null) {
+       currentURL = null;
+       currentSymb= null;
+       window.location.href=url;
+   }
+}
+
+function gopost(url,postdata) {
+   if (url!='') {
+      this.document.server.action=url;
+      this.document.server.postdata.value=postdata;
+      this.document.server.command.value='';
+      this.document.server.url.value='';
+      this.document.server.symb.value='';
+      this.document.server.submit();
+   }
+}
+
+function gocmd(url,cmd) {
+   if (url!='') {
+      this.document.server.action=url;
+      this.document.server.postdata.value='';
+      this.document.server.command.value=cmd;
+      this.document.server.url.value=currentURL;
+      this.document.server.symb.value=currentSymb;
+      this.document.server.submit();
+   }
+}
+ENDUTILITY
+}
+
+sub serverform {
+    return(<<ENDSERVERFORM);
+
+<form name="server" action="/adm/logout" method="post">
+<input type="hidden" name="postdata" value="none" />
+<input type="hidden" name="command" value="none" />
+<input type="hidden" name="url" value="none" />
+<input type="hidden" name="symb" value="none" />
+</form>
+ENDSERVERFORM
+}
 # ================================================ Handler when called directly
 
 
@@ -313,23 +656,20 @@ sub handler {
     $r->send_http_header;
     return OK if $r->header_only;
 
+    my $utility=&utilityfunctions();
+    my $form=&serverform();
     my $bodytag=&Apache::loncommon::bodytag('Main Menu');
 # ------------------------------------------------------------ Print the screen
     $r->print(<<ENDHEADER);
 <html><head>
 <title>LON-CAPA Main Menu</title>
 <script>
-function go(url) {
-    window.location=url;
-}
-function gopost(url) {
-    window.location=url;
-}
+$utility
 </script>
 </head>
 $bodytag
 ENDHEADER
-    $r->print(&rawconfig(1));
+    $r->print(&rawconfig(1).$form);
     $r->print('</body></html>');
     return OK;
 }