62 lines
2.1 KiB
Go
62 lines
2.1 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 atspi
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import (
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"fmt"
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"strings"
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)
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// A removed Chromium generated-text object can return zero characters before
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// its removal event reaches us. Refresh its metadata and parent's child order
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// rather than silently skipping text from an obsolete snapshot. Empty text
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// alone does not prove removal, so keep identities and live siblings intact.
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func (adapter *Adapter) document_text_became_empty(object ObjectID) error {
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adapter.treeMutex.Lock()
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tree := adapter.documentTree
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adapter.treeMutex.Unlock()
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if tree != nil {
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tree.mu.RLock()
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entry := tree.nodes[object]
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tree.mu.RUnlock()
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adapter.treeInvalidations.Add(uint64(tree.InvalidateSnapshot(object)))
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if entry.hasParent {
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adapter.treeInvalidations.Add(uint64(tree.MarkChildrenChanged(entry.parent)))
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}
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}
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delete(adapter.documentLineCache, object)
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return ErrStaleText
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}
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// libatspi forwards Chromium's missing-object response as an untyped GError.
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// Match the queried path exactly; a timeout or unsupported caret is not proof
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// that the virtual reading position has disappeared.
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func (adapter *Adapter) document_object_error(object ObjectID, err error) error {
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if err == nil || !object.Valid() || !strings.HasSuffix(strings.TrimSpace(err.Error()),
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"could not be processed as object "+object.Path+" does not exist") {
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return err
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}
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adapter.treeMutex.Lock()
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trees := []*AccessibleTree{adapter.tree, adapter.documentTree, adapter.documentTextTree}
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adapter.treeMutex.Unlock()
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for _, tree := range trees {
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if tree == nil {
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continue
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}
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tree.mu.RLock()
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entry := tree.nodes[object]
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tree.mu.RUnlock()
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adapter.treeInvalidations.Add(uint64(tree.Invalidate(object)))
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if entry.hasParent {
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// Virtualized pages can replace the enclosing post or feed, not
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// just this target. Refresh every ancestor's child list so capture
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// reaches the live replacement rather than reusing stale branches.
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adapter.treeInvalidations.Add(uint64(tree.markAncestorChildrenChanged(entry.parent)))
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}
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}
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clear(adapter.documentLineCache)
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return fmt.Errorf("%w: %w", ErrDeadObject, err)
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}
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