Support base-level opening of vCard files

Fields are filled naively and unreliably; this
just lays the groundwork.
Also removes the old testing callbacks for textboxes.

contact.scm

@@ -13,13 +13,20 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-(import (chicken io)
+(import scheme
+        (chicken base)
+        (chicken file)
+        (chicken io)
+        (chicken repl)
         (chicken repl)
         (chicken string)
         (chicken time)
+        srfi-1
         srfi-18
         nrepl
-        qt-light)
+        qt-light
+        (prefix uri-common uri:)
+        (prefix vcarded vcard:))
 
 
 (define qt-app #f) ;; The <qt-application> object.
@@ -71,14 +78,14 @@
 
 ;; Connect callback functions to widgets’ signals.
 (define (window-callbacks window)
-  (menubar-callbacks window)
-  (textbox-callbacks window))
+  (menubar-callbacks window))
 
 
 ;; Connect callback functions to menubar items.
 (define (menubar-callbacks window)
   (let* [(menu-file-exit (qt:find window "actionQuit"))
-         (menu-file-save (qt:find window "actionSave"))]
+         (menu-file-save (qt:find window "actionSave"))
+         (menu-file-open (qt:find window "actionOpen"))]
     ;; We connect to https://doc.qt.io/qt-6/qaction.html#triggered
     (if menu-file-exit
         (qt:connect
@@ -89,36 +96,53 @@
          menu-file-save "triggered()"
          (qt:receiver
           (lambda ()
-            (qt:message "Saving is not implemented.")))))))
-
-
-;; Connect a text-printing callback to each textbox.
-(define (textbox-callbacks window)
-  (let* [(property-names
-          '("address" "city" "company" "country" "eMail" "fax"
-            "homePhone" "name" "nickname" "state" "url"
-            "workPhone" "zip"))
-         (textboxes
-          ;; The texbox widgets are all named like “countryLineEdit”.
-          (map (lambda (property)
-                 (qt:find window (conc property "LineEdit")))
-               property-names))]
-    ;; Cycle through each textbox, connecting them to a callback that prints
-    ;; their contents each time you type in text.
-    (map (lambda (textbox)
-           ;; We connect to https://doc.qt.io/qt-6/qlineedit.html#textChanged
-           ;; … and print the value of https://doc.qt.io/qt-6/qlineedit.html#text-prop
-           ;; Also enable the File→Save menu-item (since, y’know, the user
-           ;; changed something). It defaults to disabled in the contact.ui file.
-           (if textbox
-               (qt:connect textbox "textChanged(QString)"
+            (qt:message "Saving is not implemented.")))))
+    (if menu-file-open
+        (qt:connect
+         menu-file-open "triggered()"
          (qt:receiver
           (lambda ()
-                              (let [(menu-file-save (qt:find window "actionSave"))]
-                                (if menu-file-save
-                                    (set! (qt:property menu-file-save "enabled") #t)))
-                              (print (qt:property textbox "text")))))))
-         textboxes)))
+            (open-vcard-file
+             window
+             (qt:get-open-filename "birdo" "/home/jaidyn/Contacts"))))))))
+
+
+;; Parse a vCard file and populate the window’s forms with its contents.
+(define (open-vcard-file window file)
+  (if (and (file-exists? file)
+           (file-readable? file))
+      (thread-start! (lambda () (populate-with-vcard
+                                 window
+                                 (with-input-from-file file
+                                   vcard:read-vcard))))))
+
+
+;; Simply map vCard property-names to their corresponding name in the window’s
+;; fields.
+(define property->formname-alist
+  '((FN . "name")
+    (ADR . "address")
+    (TEL . "homePhone")
+    (TEL . "workPhone")
+    (EMAIL . "eMail")
+    (URL . "url")
+    (NICKNAME . "nickname")))
+
+
+;; Given a parsed vCard in vcarded’s alist format, populate the window’s fields.
+;; Here’s the format:
+;;    ((PROPERTY (ATTRIBUTES) VALUE)
+;;     (FN () "A. Dmytryshyn")
+;;     (ADR ("TYPE=home") ("" "" "1234 Abc.", "", "", "", "")))
+(define (populate-with-vcard window vcard-alist)
+  (map (lambda (property)
+         (print property)
+         (let* [(formname (alist-ref (car property) property->formname-alist))
+                (lineEditName (conc formname "LineEdit"))
+                (lineEditWidget (if formname (qt:find window lineEditName) #f))]
+           (if lineEditWidget
+               (set! (qt:property lineEditWidget "text") (last property)))))
+       vcard-alist))
 
 
 (init)

contact.ui

@@ -225,7 +225,9 @@
     <property name="title">
      <string>File</string>
     </property>
+    <addaction name="actionOpen"/>
     <addaction name="actionSave"/>
+    <addaction name="separator"/>
     <addaction name="actionQuit"/>
    </widget>
    <addaction name="menuFile"/>
@@ -244,6 +246,11 @@
     <string>Save</string>
    </property>
   </action>
+  <action name="actionOpen">
+   <property name="text">
+    <string>Open…</string>
+   </property>
+  </action>
  </widget>
  <resources/>
  <connections/>