fixed bug causing multiple GUI to show up. Now prompts for hostname and

color

Hermes/GUI.rkt

@@ -243,7 +243,9 @@
      ;; prompt user for username
     ;; could randomly assign a user
     ;; after calling get-text set it as new label of text-field
-    (define (get-username)
+    ; TODO there is a pattern here could wrap all this into resusable prompt funciton
+    ; 
+    (define (prompt-username)
           (define returned (get-text-from-user "Username set-up" "Please enter a username"
                     main-frame "user" (list 'disallow-invalid)
                     #:validate
@@ -255,6 +257,20 @@
       (send input set-label returned)
       returned)
 
+    (define (prompt-hostname)
+          (define returned (get-text-from-user "Hostname set-up" "Please enter a hostname"
+                    main-frame "localhost" (list 'disallow-invalid)
+                    #:validate
+                    (lambda (input)
+                      (if (and (string? input) (<= (string-length input) 50)
+                                (>= (string-length input) 2))
+                          #t
+                          #f))))
+      ; (send input set-label returned)
+      returned)
+
+
+
     ;;dispatch goes below that
     ;; TODO get username function maybe
     (define (dispatch command)
@@ -264,7 +280,8 @@
             ((eq? command 'get-color) get-my-color)
             ((eq? command 'set-color) set-color)
             ((eq? command 'prompt-color) prompt-color)
-            ((eq? command 'get-username) get-username)
+            ((eq? command 'prompt-username) prompt-username)
+            ((eq? command 'prompt-hostname) prompt-hostname)
             ((eq? command 'send) send-message) ;; call to show a message in a gui
             ((eq? command 'set-name) (lambda (newname) (if (string? newname)
                                                   (set! name newname)
@@ -332,6 +349,6 @@
   (substring given-string 7))
 ;(define thing1 (make-gui))
 ;(define thing2 (make-gui))
-(define hermes-gui (make-gui))
-((hermes-gui 'show))
+; (define hermes-gui (make-gui))
+; ((hermes-gui 'show))
 

Hermes/client.rkt

@@ -19,7 +19,8 @@
 ;(sleep 0.25)
 
 
-(define host3 "localhost")
+; (define host3 "localhost")
+(define hostname ((hermes-gui 'prompt-hostname))) 
 (define port-num 4321)
 (define sleep-t 0.1)
 
@@ -42,21 +43,13 @@
 (define (client port-no)
   (parameterize ([current-custodian main-client-cust])
     ;; connect to server at port 8080
-    (define-values (in out) (tcp-connect host3 port-no)) ;; define values
+    ;; TODO catch error here
+    (define-values (in out) (tcp-connect hostname port-no)) ;; define values
     ;; binds to multiple values akin to unpacking tuples in python
 
-    ; store username to a file for later retrieval along with relevent
-    ; info used for authentication with server
-    ; TODO 
-    ; semaphore for gui object
-    ; could display a bubble and prompt for username in GUI object
-
-    ; create a gui object
-    ; (define hermes-gui (make-gui))
-    ; ((hermes-gui 'show))
-    ;(displayln "What's your name?")
-    ;(define username (read-line))
-    (define username ((hermes-gui 'get-username)))
+    ;; TODO could store theses info in a file for retrieval later
+    (define username ((hermes-gui 'prompt-username)))
+    ((hermes-gui 'prompt-color))
 
     ;send the username to the server (username in out)
     (displayln username out)