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

package atspi

type deferredLiveRegion struct{ object, document ObjectID }

// No text or native handles survive the event. Completion re-reads the owned
// active region. Secure input, shutdown and document replacement retire it.
type deferredLiveRegionStore []deferredLiveRegion

func (store *deferredLiveRegionStore) remember(object, document ObjectID) {
	if !object.Valid() || !document.Valid() {
		return
	}
	for _, entry := range *store {
		if entry.object == object {
			return
		}
	}
	if len(*store) == 32 {
		*store = (*store)[1:]
	}
	*store = append(*store, deferredLiveRegion{object, document})
}

func (store *deferredLiveRegionStore) take(object ObjectID) (ObjectID, bool) {
	for index, entry := range *store {
		if entry.object == object {
			*store = append((*store)[:index], (*store)[index+1:]...)
			return entry.document, true
		}
	}
	return ObjectID{}, false
}

func (store *deferredLiveRegionStore) forget_document(document ObjectID) {
	kept := (*store)[:0]
	for _, entry := range *store {
		if entry.document != document {
			kept = append(kept, entry)
		}
	}
	*store = kept
}