Touch ups and additional capabilities added to fifo functionality. Sample Fenrir scripts in extra

uiterm/ui.go

@@ -210,25 +210,32 @@ func (ui *Ui) onKeyEvent(key Key) {
 }
 
 func (ui *Ui) onCommandEvent(cmd string) {
+	ui.DispatchCommand(cmd)
+}
+
+// DispatchCommand sends a command to its registered listeners and reports
+// whether any listener accepted it.
+func (ui *Ui) DispatchCommand(cmd string) bool {
 	ta := strings.SplitN(cmd, " ", 2)
 	t := ta[0]
 	rest := ""
 	if len(ta) == 2 {
 		rest = ta[1]
 	}
+	handled := false
 	if ui.commandListeners[t] != nil {
+		handled = true
 		for _, listener := range ui.commandListeners[t] {
 			listener(ui, rest)
 		}
 	}
 	if ui.commandListeners["*"] != nil {
+		handled = true
 		for _, listener := range ui.commandListeners["*"] {
 			listener(ui, cmd)
 		}
 	}
-	//	if ui.activeElement != nil {
-	//		ui.activeElement.View.uiKeyEvent(key)
-	//	}
+	return handled
 }
 
 func (ui *Ui) Add(name string, view View) error {

uiterm/ui_regression_test.go

@@ -43,3 +43,21 @@ func TestSafeRuneRemovesTerminalControlCharacters(t *testing.T) {
 		t.Fatalf("safeRune altered printable text: %U", got)
 	}
 }
+
+func TestDispatchCommandReportsMatchesAndPreservesArguments(t *testing.T) {
+	ui := New(nil)
+	got := ""
+	ui.AddCommandListener(func(_ *Ui, command string) {
+		got = command
+	}, "record")
+
+	if !ui.DispatchCommand("record start") {
+		t.Fatal("registered command was not handled")
+	}
+	if got != "start" {
+		t.Fatalf("command argument = %q, want start", got)
+	}
+	if ui.DispatchCommand("unknown") {
+		t.Fatal("unknown command was reported as handled")
+	}
+}