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fix next-links that climb up more than one level

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svn: r10178

original commit: a679c89cb619c9c78f4c3d75d6a220414b042a62
This commit is contained in:
Eli Barzilay 2008-06-06 15:53:42 +00:00
parent 5c1f7ccbbc
commit 316a99fb56
1 changed files with 87 additions and 91 deletions
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178
collects/scribble/html-render.ss
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@ -557,102 +557,98 @@
(define prev-content '(larr " prev"))
(define up-content '("up"))
(define next-content '("next " rarr))
(define no-next-content next-content)
(define sep-element (make-element #f '(nbsp nbsp)))
(define/public (derive-filename d) "bad.html")
(define/private (navigation d ri pre-space?)
(let*-values ([(parent) (part-parent d ri)]
[(prev next) (find-siblings d ri)]
[(prev) (if prev
(let loop ([prev prev])
(if (and (toc-part? prev)
(pair? (part-parts prev)))
(loop (car (last-pair (part-parts prev))))
prev))
(and parent (toc-part? parent) parent))]
[(next) (cond [(and (toc-part? d)
(pair? (part-parts d)))
(car (part-parts d))]
[(and (not next) parent (toc-part? parent))
(let-values ([(prev next)
(find-siblings parent ri)])
next)]
[else next])]
[(index) (let loop ([d d])
(let ([p (part-parent d ri)])
(if p
(loop p)
(let ([subs (part-parts d)])
(and (pair? subs)
(let ([d (car (last-pair subs))])
(and (part-style? d 'index)
d)))))))])
(define (render . content)
(render-content content d ri))
(if (not (or prev next parent index up-path))
null
`(,@(if pre-space? '((p nbsp)) null)
(div ([class "navleft"])
,@(render (make-element
(if parent
(make-target-url "index.html" #f)
"nonavigation")
contents-content))
,@(if index
`(nbsp
,@(render (if (eq? d index)
(make-element "nonavigation" index-content)
(make-link-element
#f index-content (car (part-tags index)))))
#; ; no need for these index-local searches
,@(if (eq? d index)
null
`((span ([class "smaller"]) nbsp ,(search-index-box)))))
null)
,@(if up-path
`(nbsp (span ([class "smaller"]) ,(search-index-box)))
null))
(div ([class "navright"])
,@(render
(make-element
(if parent
(make-target-url
(if prev (derive-filename prev) "index.html")
#f)
"nonavigation")
prev-content)
sep-element
(make-element
(cond
;; up-path = #t => go up to the start page, using
;; cookies to get to the user's version of it (see
;; scribblings/main/private/utils for the code
;; that creates these cookies.)
[(and (eq? #t up-path) (not parent))
(make-target-url
"../index.html"
(make-with-attributes
#f `([onclick
. ,(format "return GotoPLTRoot(\"~a\");"
(version))])))]
[(or parent up-path)
(make-target-url
(cond [(not parent) up-path]
[(and (toc-part? parent) (part-parent parent ri))
(derive-filename parent)]
[else "index.html"])
#f)]
[else "nonavigation"])
up-content)
sep-element
(make-element
(if next
(make-target-url (derive-filename next) #f)
"nonavigation")
next-content)))
(p nbsp)))))
(define parent (part-parent d ri))
(define-values (prev0 next0) (find-siblings d ri))
(define prev
(if prev0
(let loop ([p prev0])
(if (and (toc-part? p) (pair? (part-parts p)))
(loop (last (part-parts p)))
p))
(and parent (toc-part? parent) parent)))
(define next
(cond [(and (toc-part? d) (pair? (part-parts d))) (car (part-parts d))]
[(not next0)
(let loop ([p parent])
(and p (toc-part? p)
(let-values ([(prev next) (find-siblings p ri)])
(or next (loop (part-parent p ri))))))]
[else next0]))
(define index
(let loop ([d d])
(let ([p (part-parent d ri)])
(if p
(loop p)
(let ([subs (part-parts d)])
(and (pair? subs)
(let ([d (last subs)])
(and (part-style? d 'index)
d))))))))
(define (render . content) (render-content content d ri))
(if (not (or prev next parent index up-path))
null
`(,@(if pre-space? '((p nbsp)) null)
(div ([class "navleft"])
,@(render (make-element
(if parent
(make-target-url "index.html" #f)
"nonavigation")
contents-content))
,@(if index
`(nbsp
,@(render (if (eq? d index)
(make-element "nonavigation" index-content)
(make-link-element
#f index-content (car (part-tags index)))))
#; ; no need for these index-local searches
,@(if (eq? d index)
null
`((span ([class "smaller"]) nbsp ,(search-index-box)))))
null)
,@(if up-path
`(nbsp (span ([class "smaller"]) ,(search-index-box)))
null))
(div ([class "navright"])
,@(render
(make-element
(if parent
(make-target-url (if prev (derive-filename prev) "index.html")
#f)
"nonavigation")
prev-content)
sep-element
(make-element
(cond
;; up-path = #t => go up to the start page, using
;; cookies to get to the user's version of it (see
;; scribblings/main/private/utils for the code that
;; creates these cookies.)
[(and (eq? #t up-path) (not parent))
(make-target-url
"../index.html"
(make-with-attributes
#f `([onclick . ,(format "return GotoPLTRoot(\"~a\");"
(version))])))]
[(or parent up-path)
(make-target-url
(cond [(not parent) up-path]
[(and (toc-part? parent) (part-parent parent ri))
(derive-filename parent)]
[else "index.html"])
#f)]
[else "nonavigation"])
up-content)
sep-element
(make-element (if next
(make-target-url (derive-filename next) #f)
"nonavigation")
next-content)))
(p nbsp))))
(define/override (render-one d ri fn)
(render-one-part d ri fn null))