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/* clang-format off */
/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* clang-format on */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "DocAccessibleWrap.h"
#include "DocAccessible-inl.h"
#include "nsAccUtils.h"
#import "mozAccessible.h"
#import "MOXTextMarkerDelegate.h"
using namespace mozilla;
using namespace mozilla::a11y;
DocAccessibleWrap::DocAccessibleWrap(dom::Document* aDocument,
PresShell* aPresShell)
: DocAccessible(aDocument, aPresShell) {}
void DocAccessibleWrap::Shutdown() {
[MOXTextMarkerDelegate destroyForDoc:this];
DocAccessible::Shutdown();
}
DocAccessibleWrap::~DocAccessibleWrap() {}
void DocAccessibleWrap::AttributeChanged(dom::Element* aElement,
int32_t aNameSpaceID,
nsAtom* aAttribute, int32_t aModType,
const nsAttrValue* aOldValue) {
DocAccessible::AttributeChanged(aElement, aNameSpaceID, aAttribute, aModType,
aOldValue);
if (aAttribute == nsGkAtoms::aria_live) {
LocalAccessible* accessible =
mContent != aElement ? GetAccessible(aElement) : this;
if (!accessible) {
return;
}
static const dom::Element::AttrValuesArray sLiveRegionValues[] = {
nsGkAtoms::OFF, nsGkAtoms::polite, nsGkAtoms::assertive, nullptr};
int32_t attrValue = nsAccUtils::FindARIAAttrValueIn(
aElement, nsGkAtoms::aria_live, sLiveRegionValues, eIgnoreCase);
if (attrValue > 0) {
if (!aOldValue || aOldValue->IsEmptyString() ||
aOldValue->Equals(nsGkAtoms::OFF, eIgnoreCase)) {
// This element just got an active aria-live attribute value
FireDelayedEvent(nsIAccessibleEvent::EVENT_LIVE_REGION_ADDED,
accessible);
}
} else {
if (aOldValue && (aOldValue->Equals(nsGkAtoms::polite, eIgnoreCase) ||
aOldValue->Equals(nsGkAtoms::assertive, eIgnoreCase))) {
// This element lost an active live region
FireDelayedEvent(nsIAccessibleEvent::EVENT_LIVE_REGION_REMOVED,
accessible);
} else if (attrValue == 0) {
// aria-live="off", check if its a role-based live region that
// needs to be removed.
if (const nsRoleMapEntry* roleMap = accessible->ARIARoleMap()) {
// aria role defines it as a live region. It's live!
if (roleMap->liveAttRule == ePoliteLiveAttr ||
roleMap->liveAttRule == eAssertiveLiveAttr) {
FireDelayedEvent(nsIAccessibleEvent::EVENT_LIVE_REGION_REMOVED,
accessible);
}
} else if (nsStaticAtom* value = GetAccService()->MarkupAttribute(
aElement, nsGkAtoms::aria_live)) {
// HTML element defines it as a live region. It's live!
if (value == nsGkAtoms::polite || value == nsGkAtoms::assertive) {
FireDelayedEvent(nsIAccessibleEvent::EVENT_LIVE_REGION_REMOVED,
accessible);
}
}
}
}
}
}
void DocAccessibleWrap::QueueNewLiveRegion(LocalAccessible* aAccessible) {
if (!aAccessible) {
return;
}
mNewLiveRegions.Insert(aAccessible->UniqueID());
}
void DocAccessibleWrap::ProcessNewLiveRegions() {
for (const auto& uniqueID : mNewLiveRegions) {
if (LocalAccessible* liveRegion =
GetAccessibleByUniqueID(const_cast<void*>(uniqueID))) {
FireDelayedEvent(nsIAccessibleEvent::EVENT_LIVE_REGION_ADDED, liveRegion);
}
}
mNewLiveRegions.Clear();
}
void DocAccessibleWrap::DoInitialUpdate() {
DocAccessible::DoInitialUpdate();
ProcessNewLiveRegions();
}
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