From ad61b790fdef156179b843e439be28613369ded7 Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Sun, 10 Nov 2024 20:45:40 +0100
Subject: WIP: xA: entry modifiers

---
 xA/xA.go | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/xA/xA.go b/xA/xA.go
index 417a24a..f61102e 100644
--- a/xA/xA.go
+++ b/xA/xA.go
@@ -979,23 +979,31 @@ func inputSubmit(text string) bool {
 
 type customEntry struct {
 	widget.Entry
+
+	// selectKeyDown is a hack to exactly invert widget.Entry's behaviour,
+	// which groups both Shift keys together.
 	selectKeyDown bool
+
+	down map[fyne.KeyName]bool
 }
 
 func newCustomEntry() *customEntry {
 	e := &customEntry{}
 	e.MultiLine = true
 	e.Wrapping = fyne.TextWrap(fyne.TextTruncateClip)
+	e.down = make(map[fyne.KeyName]bool)
 	e.ExtendBaseWidget(e)
 	return e
 }
 
 func (e *customEntry) FocusLost() {
+	e.down = make(map[fyne.KeyName]bool)
 	e.selectKeyDown = false
 	e.Entry.FocusLost()
 }
 
 func (e *customEntry) KeyDown(key *fyne.KeyEvent) {
+	e.down[key.Name] = true
 	if key.Name == desktop.KeyShiftLeft || key.Name == desktop.KeyShiftRight {
 		e.selectKeyDown = true
 	}
@@ -1003,6 +1011,7 @@ func (e *customEntry) KeyDown(key *fyne.KeyEvent) {
 }
 
 func (e *customEntry) KeyUp(key *fyne.KeyEvent) {
+	delete(e.down, key.Name)
 	if key.Name == desktop.KeyShiftLeft || key.Name == desktop.KeyShiftRight {
 		e.selectKeyDown = false
 	}
@@ -1014,6 +1023,19 @@ func (e *customEntry) TypedKey(key *fyne.KeyEvent) {
 		return
 	}
 
+	/*
+		modified := false
+		for _, name := range []fyne.KeyName{
+			desktop.KeyAltLeft, desktop.KeyAltRight,
+			desktop.KeyControlLeft, desktop.KeyControlRight,
+			desktop.KeySuperLeft, desktop.KeySuperRight,
+		} {
+			if e.down[name] {
+				modified = true
+			}
+		}
+	*/
+
 	// Invert the Shift key behaviour here.
 	// Notice that this will never work on mobile.
 	shift := &fyne.KeyEvent{Name: desktop.KeyShiftLeft}
@@ -1027,7 +1049,8 @@ func (e *customEntry) TypedKey(key *fyne.KeyEvent) {
 			e.OnSubmitted(e.Text)
 		}
 	case fyne.KeyTab:
-		// TODO(p)
+		// TODO(p): Just do e.Append() if state matches.
+		log.Println("completion")
 	default:
 		e.Entry.TypedKey(key)
 	}
-- 
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