#lang racket/base (require "racket-webview-qt.rkt" "utils.rkt" web-server/servlet web-server/servlet-env web-server/http net/url racket/runtime-path racket/file racket/string racket/path racket/port json ) (provide webview-create webview-devtools webview-close webview-run-js webview-move webview-resize webview-bind! webview-standard-file-getter ) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; Web server ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (define current-servlet-port 8083) (define current-window-nr 1) (define-runtime-path js-path "../js") (define (default-boilerplate-js) (let ((file (build-path js-path "boilerplate.js"))) (file->string file))) (define-struct wv ([handle #:mutable] port [window-nr #:mutable] [file-getter #:mutable] [boilerplate-js #:mutable] [webserver-thread #:mutable])) (define (process-html wv-handle path out) (let ((html (file->string path)) (boilerplate-js (wv-boilerplate-js wv-handle))) (set! html (string-replace html "" (string-append "" "\n" "" "\n"))) (display html out))) (define (process-file wv-handle ext path out) (let ((content (file->bytes path))) (write bytes out))) (define (web-serve wv-handle req) (let* ((path (url->string (request-uri req))) (file-getter (wv-file-getter wv-handle))) (let* ((file-to-serve (build-path (file-getter path))) (ext-bytes (path-get-extension file-to-serve)) (ext (if (eq? ext-bytes #f) #f (string->symbol (string-downcase (substring (bytes->string/utf-8 ext-bytes) 1))))) ) (if (file-exists? file-to-serve) (response/output (λ (out) (if (or (eq? ext 'html) (eq? ext 'htm)) (process-html wv-handle file-to-serve out) (process-file wv-handle ext file-to-serve out)) )) (response/output #:code 404 (λ (out) (displayln (format "~a not found" path) out))) ) ) ) ) (define (start-web-server h) (thread (λ () (serve/servlet (λ (req) (web-serve h req)) #:listen-ip "127.0.0.1" #:port (wv-port h) #:command-line? #t #:servlet-path "" #:stateless? #t ;#:launch-browser #f #:servlet-regexp #rx"")))) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; Utilities ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (define (util-parse-event evt) (let ((wv-d0 (with-input-from-string evt read-json))) wv-d0)) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; Webview functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (define (webview-create file-getter event-callback #:boilerplate-js [bj (default-boilerplate-js)] #:parent [p 0]) (let* ((h (make-wv #f current-servlet-port -1 file-getter bj #f)) (server (let ((s (start-web-server h))) (sleep 1) s)) (event-processor (λ (wv evt) (event-callback h (util-parse-event evt)))) (wv (rkt-webview-create p event-processor)) (base-req (format "http://127.0.0.1:~a" (wv-port h))) ) (set-wv-handle! h wv) (set-wv-window-nr! h (rkt-wv-win wv)) (set-wv-webserver-thread! h server) (rkt-webview-set-url! (wv-handle h) base-req) (set! current-servlet-port (+ current-servlet-port 1)) h)) (define (webview-devtools wv) (rkt-webview-open-devtools (wv-handle wv))) (define (webview-move wv x y) (rkt-webview-move (wv-handle wv) x y)) (define (webview-resize wv w h) (rkt-webview-resize (wv-handle wv) w h)) (define (webview-close wv) (rkt-webview-close (wv-handle wv)) (kill-thread (wv-webserver-thread wv)) ) (define (webview-bind! wv selector event) (let ((sel (if (symbol? selector) (format "#~a" selector) selector)) (evt (format "~a" event))) (webview-run-js wv (format "window.rkt_bind_evt_ids(~a, '~a', '~a')" (wv-window-nr wv) sel evt)))) (define (webview-run-js wv js) (rkt-webview-run-js (wv-handle wv) js)) (define (webview-standard-file-getter base-path #:not-exist [on-not-exist (λ (file base-path path) path)] ) (λ (file) (let ((f (if (string=? file "/") "index.html" file))) (when (string-prefix? f "/") (set! f (substring f 1))) (let ((p (build-path base-path f))) (if (not (file-exists? p)) (on-not-exist file base-path p) p))))) ;(define (webview-call-js wv js) ; (let ((result (rkt_webview_call_js (wv-handle wv) js))) ; result)) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; testing ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (define-runtime-path example-path "../example") (define file-getter (webview-standard-file-getter example-path)) (define (test) (let* ((cb (λ (handle evt) (displayln evt))) (h (webview-create file-getter cb))) h)) ; (while (not (webview-has-events? h)) ; (displayln "Waiting...") ; (sleep 1)) ; (let ((evt (webview-get-event h))) ; (when (string=? (hash-ref evt 'evt) "html-loaded") ; (webview-bind h "button" "click"))) ; h))