зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
2.6 KiB
C++
98 строки
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AccessibleOrProxy.h"
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#include "mozilla/a11y/DocAccessibleParent.h"
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#include "mozilla/a11y/OuterDocAccessible.h"
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namespace mozilla {
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namespace a11y {
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int32_t AccessibleOrProxy::IndexInParent() const {
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if (IsAccessible()) {
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return AsAccessible()->IndexInParent();
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}
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ProxyAccessible* proxy = AsProxy();
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if (!proxy) {
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return -1;
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}
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if (proxy->Parent()) {
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return proxy->IndexInParent();
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}
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if (proxy->OuterDocOfRemoteBrowser()) {
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return 0;
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}
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MOZ_ASSERT_UNREACHABLE("Proxy should have parent or outer doc.");
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return -1;
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}
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AccessibleOrProxy AccessibleOrProxy::Parent() const {
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if (IsAccessible()) {
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return AsAccessible()->Parent();
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}
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ProxyAccessible* proxy = AsProxy();
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if (!proxy) {
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return nullptr;
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}
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if (ProxyAccessible* parent = proxy->Parent()) {
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return parent;
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}
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// Otherwise this should be the proxy for the tab's top level document.
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return proxy->OuterDocOfRemoteBrowser();
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}
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AccessibleOrProxy AccessibleOrProxy::ChildAtPoint(
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int32_t aX, int32_t aY, Accessible::EWhichChildAtPoint aWhichChild) {
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if (IsProxy()) {
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return AsProxy()->ChildAtPoint(aX, aY, aWhichChild);
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}
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ProxyAccessible* childDoc = RemoteChildDoc();
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if (childDoc) {
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// This is an OuterDocAccessible.
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nsIntRect docRect = AsAccessible()->Bounds();
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if (!docRect.Contains(aX, aY)) {
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return nullptr;
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}
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if (aWhichChild == Accessible::eDirectChild) {
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return childDoc;
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}
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return childDoc->ChildAtPoint(aX, aY, aWhichChild);
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}
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AccessibleOrProxy target = AsAccessible()->ChildAtPoint(aX, aY, aWhichChild);
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if (target.IsNull() || aWhichChild == Accessible::eDirectChild) {
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return target;
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}
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childDoc = target.RemoteChildDoc();
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if (childDoc) {
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// Accessible::ChildAtPoint stopped at an OuterDocAccessible, since it
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// can't traverse into ProxyAccessibles. Continue the search from childDoc.
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return childDoc->ChildAtPoint(aX, aY, aWhichChild);
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}
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return target;
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}
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ProxyAccessible* AccessibleOrProxy::RemoteChildDoc() const {
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MOZ_ASSERT(!IsNull());
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if (IsProxy()) {
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return nullptr;
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}
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OuterDocAccessible* outerDoc = AsAccessible()->AsOuterDoc();
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if (!outerDoc) {
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return nullptr;
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}
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return outerDoc->RemoteChildDoc();
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}
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} // namespace a11y
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} // namespace mozilla
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