add invoke-interactively, for use in keymaps

move commander widget to Command.widget

command.fnl

@@ -2,6 +2,7 @@
 (local { : view } (require :fennel))
 
 (local commands {})
+
 (local Buffer (require :buffer))
 
 (fn define-command [name function params]
@@ -74,8 +75,12 @@
       (do
         (tset p k input-string)
         (state-for-next-param c p))
-      _
-      (do (print "unexpected state " (view state))
+
+      {:command c :this-param nil :collected-params p}
+      (do
+        (state-for-next-param c p))
+
+      _ (do (print "unexpected state " (view state))
             state)
       )))
 
@@ -90,13 +95,50 @@
      :default (and param (param))
      }))
 
+(fn update-widget-state [w result]
+  (set  w.placeholder_text
+        (or result.prompt ""))
+  (set w.sensitive result.active)
+  (set w.text
+       (or result.default result.error "")))
+
+(local widget
+       (let [w (Gtk.Entry {
+                          :sensitive false
+                          })]
+         (tset w :on_activate
+               (fn [event]
+                 (update-widget-state w (on-input event.text))))
+         w))
+
 (fn activate []
   (tset state :active true)
+  (set widget.sensitive true)
+  (set widget.text "")
+  (widget:grab_focus)
   state)
 
+(fn invoke-interactively [name params]
+  (let [c (find-command name)
+        s {
+           :active true
+           :command c
+           :collected-params params
+           }]
+    (set state s)
+    (activate)
+    (let [r  (on-input nil)]
+      (update-widget-state widget r)
+      r)))
+
+(fn active? [] state.active)
+
 {
  : activate
+ : active?
  : define-command
  : on-input
  : reset-state
+ : invoke-interactively
+ : widget
  }

frame.fnl

@@ -16,9 +16,6 @@
         container (Gtk.Box {
                             :orientation Gtk.Orientation.VERTICAL
                             })
-        commander (Gtk.Entry {
-                              :sensitive false
-                              })
         progress-bar (Gtk.ProgressBar {
                                        :orientation Gtk.Orientation.HORIZONTAL
                                        :fraction 1.0
@@ -28,26 +25,28 @@
                                 :orientation Gtk.Orientation.VERTICAL
                                 })
         ]
-    (tset commander :on_activate
+    (tset Command.widget :on_activate
           (fn [event]
             (let [result (Command.on-input event.text)]
-              (set commander.placeholder_text
+              (set  Command.widget.placeholder_text
                    (or result.prompt ""))
-              (set commander.sensitive result.active)
-              (set commander.text
+              (set Command.widget.sensitive result.active)
+              (set Command.widget.text
                    (or result.default result.error "")))))
 
     (tset window :on_key_release_event
           (fn [window event]
+            (when (and (not (Command.active?))
+                       (= event.keyval (string.byte "g")))
+              (Command.invoke-interactively
+               "visit-location"
+               {:buffer "main"}))
             (when (and event.state.MOD1_MASK
                        (= event.keyval (string.byte "x")))
-              (set commander.sensitive true)
-              (set commander.text "")
-              (commander:grab_focus)
               (Command.activate))))
 
     (doto container
-      (: :pack_start commander false false vpad)
+      (: :pack_start  Command.widget false false vpad)
       (: :pack_start progress-bar false false vpad)
       (: :pack_start contentwidget true true vpad))
     (window:add container)
@@ -56,7 +55,6 @@
           {
            :window window
            :buffer nil
-           :commander commander
            :content contentwidget
            :show-buffer (fn [self b]
                           (each [_ w (pairs (contentwidget:get_children))]

test/command.fnl

@@ -31,3 +31,14 @@
         (catch
          x (values nil (view x))))]
   (assert ok err))
+
+(before)
+(let [(ok err)
+      (match
+          (Command.invoke-interactively
+           "multiply"
+           {:a "7" :b "9"})
+        (where {:active false} (= happened 63)) true
+        x (values nil (.. "wrong answer " (view x) " " (view happened)))
+        nil (values nil "???"))]
+  (assert ok err))