Allow #:part-of to use symbolic names, add it to a bunch of pages.

(Using a symbolic name makes it easy to use without worrying about
circular dependencies.)

collects/meta/web/common/layout.rkt

@@ -89,7 +89,14 @@
                     (resource (get-path 'plain id file "html" dir)
                               (file-writer output-xml page)
                               referrer)))
-  (if html-only? page this))
+  (when this (pages->part-of this (or part-of this)))
+  (or this page))
+
+;; maps pages to their parts, so symbolic values can be used to determine it
+(define pages->part-of
+  (let ([t (make-hasheq)])
+    (case-lambda [(page) (hash-ref t page page)]
+                 [(page part-of) (hash-set! t page part-of)])))
 
 (provide set-navbar!)
 (define-syntax-rule (set-navbar! pages help)
@@ -100,9 +107,13 @@
 
 (define navbar-info (box #f))
 (define (navbar-maker logo)
-  (define pages-promise (lazy (car (or (unbox navbar-info)
+  (define pages-promise
-                                       (error 'navbar "no navbar info set")))))
+    (lazy (car (or (unbox navbar-info)
-  (define help-promise (lazy (cadr (unbox navbar-info))))
+                   (error 'navbar "no navbar info set")))))
+  (define help-promise
+    (lazy (cadr (unbox navbar-info))))
+  (define pages-parts-of-promise
+    (lazy (map pages->part-of (force pages-promise))))
   (define (middle-text size x)
     (span style: `("font-size: ",size"px; vertical-align: middle;")
           class: 'navtitle
@@ -126,12 +137,14 @@
         CLOSE))
   (define (links-table this)
     (table width: "100%"
-      (tr (map (lambda (nav)
+      (tr (map (lambda (nav navpart)
                  (td class: 'navlinkcell
                    (span class: 'navitem
-                     (span class: (if (eq? this nav) 'navcurlink 'navlink)
+                     (span class: (if (eq? (pages->part-of this) navpart)
+                                    'navcurlink 'navlink)
                        nav))))
-               (force pages-promise)))))
+               (force pages-promise)
+               (force pages-parts-of-promise)))))
   (lambda (this)
     (div class: 'racketnav
       (div class: 'navcontent

collects/meta/web/download/index.rkt

@@ -11,7 +11,7 @@
 
 (provide index)
 (define index
-  @page[#:link-title "Downloads"]{
+  @page[#:link-title "Downloads" #:part-of 'download]{
     @div[style: "float: right;"]{@download-button}
     Use these links to browse the download directories directly:
     @ul{@li{Current @a[href: `(,installers "/recent")]{installers}

collects/meta/web/download/installer-pages.rkt

@@ -25,7 +25,7 @@
       [(render-option) (option value: url platform type)]
       [(#f) @a[href: url]{@title}]
       [else (error 'installer-page "unknown mode: ~e" mode)]))
-  @page[#:file html-file #:title title #:referrer this]{
+  @page[#:file html-file #:title title #:referrer this #:part-of 'download]{
     @table[width: "90%" align: 'center]{
       @tr[valign: 'top]{
         @td[width: "50%"]{

collects/meta/web/minis/lists.rkt

@@ -17,7 +17,7 @@
                   see how the sausages are made @mdash and help make them.})))
 
 (define lists
-  @page[#:title "Mailing Lists" #:file ""]{
+  @page[#:title "Mailing Lists" #:file "" #:part-of 'community]{
     @p{This is the Racket mailing list server.  We have three public mailing
        lists listed below, with several mirrors for each one.}
     @(map show-list MLs)})

collects/meta/web/stubs/blog.rkt

@@ -32,15 +32,13 @@
     ;; in blogger pages
     (regexp-replace* #rx" " str "\\ ")))
 
-(define (racket-navbar)  (get-resource-text 'navbar #f))
+(define (racket-navbar)  (get-resource-text 'navbar 'community))
 (define (racket-favicon) (get-resource-text 'favicon-headers))
 
 (provide blog)
 (define blog
   @plain[#:file ""
-         #:referrer (lambda (u) @a[href: u]{Blog})
+         #:referrer (lambda (u) @a[href: u]{Blog})]{
-         ;; #:part-of community  <-- TODO: is doing this a good idea
-         ]{
 @; This is the blogger style template file, with one hole for the CSS and one
 @; for the navbar, and a few more tweaks (first by soegaard and then by eli).
 @;

collects/meta/web/stubs/dirlist.rkt

@@ -10,6 +10,7 @@
   (delay (regexp-split #rx"{{{BODY}}}"
                        (xml->string @page[#:id 'browse-downloads
                                           #:html-only #t
+                                          #:part-of 'download
                                           "{{{BODY}}}"]))))
 
 (define header @plain[#:file "header.html" (car  (force header+footer))])

collects/meta/web/stubs/mailman.rkt

@@ -32,7 +32,7 @@
 
 (define listinfo
   @page[#:title @list{Mailing lists: @MM{List-Name}}
-        #:extra-headers style-header]{
+        #:extra-headers style-header #:part-of 'community]{
     @; --------------------
     @comment{@||
       Based on the Mailman file "listinfo.html", revision: 5865

collects/meta/web/www/community.rkt

@@ -6,7 +6,7 @@
 
 (provide community)
 (define community
-  @page{
+  @page[#:part-of 'community]{
     @mailing-lists-quick
     @parlist[@strong{Discussion Channels}
       @text{@irc-chat{Chat on IRC} in the @TT{@big{@strong{#racket}}} channel

collects/meta/web/www/download.rkt

@@ -6,7 +6,7 @@
 
 (define download
   @page[#:link-title "Download" #:window-title "Download Racket"
-        #:file "download/"]{
+        #:file "download/" #:part-of 'download]{
     @(render-download-page)})
 
 (define download-button

collects/meta/web/www/help.rkt

@@ -17,7 +17,7 @@
                   installed.  As a second line of defense, the documentation
                   for the core of the most recent version of Racket is
                   available
-                  @a[href: "http://docs.plt-scheme.org"]{from this web site}.}
+                  @a[href: "http://docs.plt-scheme.org/"]{from this web site}.}
             @text{Not sure what to search for?  The documentation includes a
                   @a[href: "http://docs.plt-scheme.org/guide/"]{guide} (also
                   located in your local copy of the documentation) that

collects/meta/web/www/irc.rkt

@@ -6,7 +6,7 @@
   "http://webchat.freenode.net?channels=racket&uio=OT10cnVlJjExPTIzNg6b")
 
 (define irc-chat
-  @page[#:title "IRC"]{
+  @page[#:title "IRC" #:part-of 'community]{
     @iframe[src: webchat-link width: "100%" height: "400"]})
 
 (define irc-logs-symlink (symlink "/home/scheme/irc-logs/racket/"))

collects/meta/web/www/outreach+research.rkt

@@ -85,5 +85,5 @@
         #:title "Technical Reports"
         #:extra-headers
         @meta[http-equiv: "refresh"
-              content: "2;url=http://plt-scheme.org/techreports/"]]{
+              content: "0;url=http://plt-scheme.org/techreports/"]]{
     TODO})

collects/meta/web/www/people.rkt

@@ -37,7 +37,7 @@
 
 (provide people)
 (define people
-  @page{
+  @page[#:part-of 'community]{
     @p{@|ldquo|PLT@|rdquo| refers to the group that is the core of the Racket
        development team.  PLT consists of numerous people distributed across
        several different universities in the USA: @places}