hjozwiak
7eef6e8be6
Recreated-node caret recovery, tolerant caret validation, per-root retained document trees and cursors across tab switches, document warm-up, coalesced structural moves, and hung-provider fast-fail with an 'Application is not responding' announcement.
65 lines
2.2 KiB
Go
65 lines
2.2 KiB
Go
// Copyright (c) 2026 Storm Dragon
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// Authors: Storm Dragon, Angus Kola
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// SPDX-License-Identifier: GPL-3.0-or-later
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package review
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import (
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"context"
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"git.stormux.org/storm/cthulhu/internal/atspi"
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)
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// One move owns this wrapper. Validate the path before native reads so stale
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// range lengths and omitted candidates trigger recovery without consuming a
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// different object's text or advancing the retained cursor.
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type navigationTextReader struct {
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DocumentCaretReader
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tree *atspi.AccessibleTree
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document atspi.DocumentSnapshot
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anchor int
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readObjects []atspi.ObjectReference
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}
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func (reader *navigationTextReader) ReadDocumentCaret(ctx context.Context, object atspi.ObjectReference, offset int, unit atspi.DocumentCaretUnit) (atspi.DocumentCaretText, error) {
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index, found := reader.document.Index(object.ID())
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if !found || reader.document.Nodes[index].Reference != object {
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return atspi.DocumentCaretText{}, atspi.ErrStaleObject
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}
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if err := reader.tree.ValidateDocumentCaretRange(ctx, reader.document, reader.anchor, index); err != nil {
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return atspi.DocumentCaretText{}, err
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}
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text, err := reader.DocumentCaretReader.ReadDocumentCaret(ctx, object, offset, unit)
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if err == nil {
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reader.readObjects = append(reader.readObjects, object)
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}
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return text, err
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}
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func (reader *navigationTextReader) did_read(object atspi.ObjectReference) bool {
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for _, read := range reader.readObjects {
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if read == object {
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return true
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}
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}
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return false
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}
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// Character blocks belong to one word command and never survive an event or
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// recapture. Native spelling and actual word boundaries still use normal reads.
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type navigationCharacterReader struct {
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*navigationTextReader
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source DocumentCharacterReader
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}
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func (reader *navigationCharacterReader) ReadDocumentCharacters(ctx context.Context, object atspi.ObjectReference, offset int) (atspi.DocumentCaretText, error) {
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index, found := reader.document.Index(object.ID())
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if !found || reader.document.Nodes[index].Reference != object {
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return atspi.DocumentCaretText{}, atspi.ErrStaleObject
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}
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if err := reader.tree.ValidateDocumentCaretRange(ctx, reader.document, reader.anchor, index); err != nil {
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return atspi.DocumentCaretText{}, err
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}
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return reader.source.ReadDocumentCharacters(ctx, object, offset)
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}
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