Improve handling of SelButtons. Reset password insertion page as

appropriate.

cmd/passgo-gui/main.go

@@ -504,6 +504,12 @@ func eventLoop() {
 		passvalEd.SetText(string(pw))
 	}
 
+	resetInsertPage := func() {
+		passnameEd.SetText("")
+		passvalEd.SetText("")
+		genBtn.Deselect()
+	}
+
 	insertPage = func() {
 		c2 := flex.End(insertLabel.Layout(ops, flex.Rigid()))
 
@@ -560,6 +566,7 @@ func eventLoop() {
 		}
 		if backBtn.Clicked() {
 			w.Invalidate()
+			resetInsertPage()
 			page = listPage
 		}
 		if saveBtn.Clicked() {
@@ -597,6 +604,7 @@ func eventLoop() {
 		if yesBtn.Clicked() {
 			w.Invalidate()
 			page = listPage
+			resetInsertPage()
 			store.Insert(insName, insValue)
 		}
 	}

cmd/passgo-gui/ui.go

@@ -134,10 +134,33 @@ func (b *Button) Clicked() bool {
 	return b.clicked
 }
 
+func (b *SelButton) Select() {
+	if b.Selected {
+		return
+	}
+	b.Selected = true
+	b.SelColor, b.Background = b.Background, b.SelColor
+}
+
+func (b *SelButton) Deselect() {
+	if !b.Selected {
+		return
+	}
+	b.Selected = false
+	b.SelColor, b.Background = b.Background, b.SelColor
+}
+
+func (b *SelButton) Toggle() {
+	if b.Selected {
+		b.Deselect()
+	} else {
+		b.Select()
+	}
+}
+
 func (b *SelButton) Clicked() bool {
 	if b.clicked {
-		b.Selected = !b.Selected
-		b.SelColor, b.Background = b.Background, b.SelColor
+		b.Toggle()
 		return true
 	} else {
 		return false