187 lines
7.1 KiB
Scheme
187 lines
7.1 KiB
Scheme
(module html mzscheme
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(provide (all-defined))
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(require (lib "servlets/private/search-util.ss" "help")
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(lib "servlet.ss" "web-server")
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(lib "etc.ss")
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(lib "kw.ss")
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(lib "port.ss")
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"url.ss")
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;;;
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;;; STYLESHEET
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;;;
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; css : -> string
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; fetch stylesheet from disk
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; (convenient during development)
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(define (css)
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(define (port->string port)
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(let ([os (open-output-string)])
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(copy-port port os)
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(get-output-string os)))
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(call-with-input-file
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(build-path (this-expression-source-directory)
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"helpdesk.css")
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port->string))
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;;;
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;;; GENERATE XML FOR THE ENTIRE PAGE
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;;;
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; html-page : xexpr (list xml) (list xml) -> xexpr
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(define/kw (html-page #:key title (top '()) (bodies '()) body)
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(let ([bodies (if body (append bodies (list body)) bodies)])
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`(html
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(meta ((http-equiv "Content-Type") (content "text/html;charset=UTF-8")))
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(meta ((name "generator") (content "PLT Scheme")))
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; TODO: Ask Eli what exactly to put here in the online version
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;(script ((src "http://www.google-analytics.com/urchin.js") (type "text/javascript")))
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;(script ((type "text/javascript")) "_uacct=\"UA-808258-1\";_udn=\"plt-scheme.org\";urchinTracker();")
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(head (title ,title)
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(style ((type "text/css")) "\n"
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,(css))
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; TODO: Check the icons work in online version
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(link ([rel "icon"] [href "/help/servlets/plticon.ico"] [type "image/ico"]))
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(link ([rel "shortcut icon"] [href "/help/servlets/plticon.ico"])))
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(body
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,@top
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,@bodies))))
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; html-select : string (list string) natural -> xexpr
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(define (html-select name descriptions selected-index)
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`(select ((name ,name))
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,@(let loop ([i 0] [ds descriptions] [xexprs '()])
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(cond
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[(null? ds) (reverse! xexprs)]
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[(= i selected-index) (loop (+ i 1) (cdr ds)
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(cons (car ds)
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(cons `(option ((selected "selected")))
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xexprs)))]
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[else (loop (+ i 1) (cdr ds)
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(cons (car ds)
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(cons `(option)
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xexprs)))]))))
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;;;
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;;; THE TOP SEARCH BAR
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;;; (online version online)
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; html-top : requrest -> (list xml)
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(define (html-top request)
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(let* ([bindings (request-bindings request)]
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[search-string (get-binding bindings 'search-string "")]
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[search-type (get-binding bindings 'search-type search-type-default)]
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[match-type (get-binding bindings 'match-type match-type-default)])
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`((div ((style "border: 1px solid black; padding: 3px; background-color: #74ca56; "))
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(table ((width "98%"))
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(tr (td ((align "right"))
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(img ((class "image")
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(src "http://www.plt-scheme.org/plt-green.jpg")
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(width "133") (height "128") (alt "[icon]"))))
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(td ((align "center"))
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(form ((method "GET") (action ,url-helpdesk-results))
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(table (tr (td ((align "center") (class "sansa"))
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"Search the Help Desk for documentation on: " ))
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(tr (td (input ((name "search-string") (type "text") (size "70")
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(value ,search-string))))
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(td 'nbsp 'nbsp (button "Search")))
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(tr (td ((align "center"))
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,(html-select "search-type"
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search-type-descriptions
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(search-type->index search-type))
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'nbsp 'nbsp 'nbsp 'nbsp
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,(html-select "match-type"
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match-type-descriptions
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(match-type->index match-type)))))))
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(td 'nbsp) (td 'nbsp) (td 'nbsp)
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(td (table (tr (td ((align "center"))
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(a ((href ,url-helpdesk-home) (class "sansa")) "HOME")))
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(tr (td ((align "center"))
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(a ((href ,url-helpdesk-manuals) (class "sansa")) "MANUALS")))))
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)))
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(p " "))))
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;;;
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;;; BINDINGS
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;;;
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(define (get-binding bindings name default-value)
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(if (exists-binding? name bindings)
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(extract-binding/single name bindings)
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default-value))
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(define (delete-binding id bindings)
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(cond
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[(null? bindings)
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'()]
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[(equal? (binding-id (car bindings)) id)
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(cdr bindings)]
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[else
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(cons (car bindings)
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(delete-binding id (cdr bindings)))]))
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(define (delete-bindings ids bindings)
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(cond [(null? ids) bindings]
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[else (delete-bindings (cdr ids)
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(delete-binding (car ids)
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bindings))]))
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(define (display-binding binding)
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; for debugging
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(display "binding: ")
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(display (binding-id binding))
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(display "=")
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(write (binding:form-value binding))
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(newline))
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;;;
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;;; SEARCH DESCRIPTIONS AND SHORT NAMES
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;;;
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(define (search-type-description i)
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(cadr (list-ref search-types i)))
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(define (match-type-description i)
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(cadr (list-ref match-types i)))
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(define reversed-search-types
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(map reverse search-types))
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(define reversed-match-types
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(map reverse match-types))
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(define (search-type-description->search-type desc)
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(cond [(assoc desc reversed-search-types) => cadr]
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[else search-type-default]))
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(define (match-type-description->match-type desc)
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(cond [(assoc desc reversed-match-types) => cadr]
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[else match-type-default]))
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(define search-type->index
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(let* ([types (map car search-types)]
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[len (length types)])
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(lambda (t)
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(cond
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[(member t types)
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=> (lambda (tail) (- len (length tail)))]
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[else -1]))))
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(define match-type->index
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(let* ([types (map car match-types)]
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[len (length types)])
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(lambda (t)
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(cond
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[(member t types)
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=> (lambda (tail) (- len (length tail)))]
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[else -1]))))
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(define search-type-descriptions
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(map cadr search-types))
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(define match-type-descriptions
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(map cadr match-types))
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) |