// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
// SPDX-License-Identifier: GPL-3.0-or-later

package app

import "git.stormux.org/storm/cthulhu/internal/atspi"

// The event loop remembers exactly five control identities for one preferences
// child. A new child or focus reset retires them. GTK reports combo selections
// as menu-item descendants with the owning combo in OriginPath.
type echoPreviewPresentation struct {
	pid      int64
	controls [5]atspi.ObjectID
}

func (preview *echoPreviewPresentation) owns(event atspi.Event, pid int64) bool {
	if preview.pid != pid {
		*preview = echoPreviewPresentation{pid: pid}
	}
	if pid <= 0 {
		return false
	}
	index := -1
	switch event.Source.Name {
	case "Key echo rate":
		index = 0
	case "Key echo pitch":
		index = 1
	case "Key echo volume":
		index = 2
	case "Key echo speech synthesizer":
		index = 3
	case "Key echo person":
		index = 4
	}
	if index >= 0 && int64(event.Source.ApplicationPID) == pid &&
		(index < 3 && event.Source.Role == "slider" || index >= 3 && event.Source.Role == "combo box") {
		preview.controls[index] = event.Source.ID()
		return true
	}
	if event.Type == atspi.SelectionChangedEvent && event.Source.Role == "menu item" {
		owner := atspi.NewObjectID(event.Source.BusName, event.OriginPath)
		return owner.Valid() && (owner == preview.controls[3] || owner == preview.controls[4])
	}
	return false
}