Add 'result' event that is triggered when the result list is ready

Close #3560

src/terminal.go

@@ -251,6 +251,7 @@ type Terminal struct {
 	borderWidth        int
 	count              int
 	progress           int
+	hasResultActions   bool
 	hasFocusActions    bool
 	hasLoadActions     bool
 	triggerLoad        bool
@@ -731,6 +732,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		ellipsis:           opts.Ellipsis,
 		ansi:               opts.Ansi,
 		tabstop:            opts.Tabstop,
+		hasResultActions:   false,
 		hasFocusActions:    false,
 		hasLoadActions:     false,
 		triggerLoad:        false,
@@ -759,7 +761,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		killChan:           make(chan int),
 		serverInputChan:    make(chan []*action, 10),
 		serverOutputChan:   make(chan string),
-		eventChan:          make(chan tui.Event, 4), // (load + zero|one) | (focus) | (GetChar)
+		eventChan:          make(chan tui.Event, 5), // (load + result + zero|one) | (focus) | (GetChar)
 		tui:                renderer,
 		initFunc:           func() { renderer.Init() },
 		executing:          util.NewAtomicBool(false),
@@ -803,6 +805,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		}
 	}
 
+	_, t.hasResultActions = t.keymap[tui.Result.AsEvent()]
 	_, t.hasFocusActions = t.keymap[tui.Focus.AsEvent()]
 	_, t.hasLoadActions = t.keymap[tui.Load.AsEvent()]
 
@@ -1076,6 +1079,9 @@ func (t *Terminal) UpdateList(merger *Merger) {
 				t.eventChan <- one
 			}
 		}
+		if t.hasResultActions {
+			t.eventChan <- tui.Result.AsEvent()
+		}
 	}
 	t.mutex.Unlock()
 	t.reqBox.Set(reqInfo, nil)
@@ -3189,7 +3195,7 @@ func (t *Terminal) Loop() {
 			}
 			select {
 			case event = <-t.eventChan:
-				needBarrier = !event.Is(tui.Load, tui.Focus, tui.One, tui.Zero)
+				needBarrier = !event.Is(tui.Load, tui.Result, tui.Focus, tui.One, tui.Zero)
 			case serverActions := <-t.serverInputChan:
 				event = tui.Invalid.AsEvent()
 				if t.listenAddr == nil || t.listenAddr.IsLocal() || t.listenUnsafe {