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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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 "Platform.h"
#include "ProxyAccessibleWrap.h"
#include "DocAccessibleWrap.h"
#include "SessionAccessibility.h"
#include "mozilla/a11y/ProxyAccessible.h"
#include "nsIAccessibleEvent.h"
#include "nsIAccessiblePivot.h"
#include "nsIStringBundle.h"
#define ROLE_STRINGS_URL "chrome://global/locale/AccessFu.properties"
using namespace mozilla;
using namespace mozilla::a11y;
static nsIStringBundle* sStringBundle;
void a11y::PlatformInit() {}
void a11y::PlatformShutdown() { NS_IF_RELEASE(sStringBundle); }
void a11y::ProxyCreated(ProxyAccessible* aProxy, uint32_t aInterfaces) {
AccessibleWrap* wrapper = nullptr;
if (aProxy->IsDoc()) {
wrapper = new DocProxyAccessibleWrap(aProxy->AsDoc());
} else {
wrapper = new ProxyAccessibleWrap(aProxy);
}
wrapper->AddRef();
aProxy->SetWrapper(reinterpret_cast<uintptr_t>(wrapper));
}
void a11y::ProxyDestroyed(ProxyAccessible* aProxy) {
AccessibleWrap* wrapper =
reinterpret_cast<AccessibleWrap*>(aProxy->GetWrapper());
// If aProxy is a document that was created, but
// RecvPDocAccessibleConstructor failed then aProxy->GetWrapper() will be
// null.
if (!wrapper) {
return;
}
wrapper->Shutdown();
aProxy->SetWrapper(0);
wrapper->Release();
}
void a11y::ProxyEvent(ProxyAccessible* aTarget, uint32_t aEventType) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (!sessionAcc) {
return;
}
switch (aEventType) {
case nsIAccessibleEvent::EVENT_FOCUS:
sessionAcc->SendFocusEvent(WrapperFor(aTarget));
break;
}
}
void a11y::ProxyStateChangeEvent(ProxyAccessible* aTarget, uint64_t aState,
bool aEnabled) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (!sessionAcc) {
return;
}
if (aState & states::CHECKED) {
sessionAcc->SendClickedEvent(
WrapperFor(aTarget),
java::SessionAccessibility::FLAG_CHECKABLE |
(aEnabled ? java::SessionAccessibility::FLAG_CHECKED : 0));
}
if (aState & states::EXPANDED) {
sessionAcc->SendClickedEvent(
WrapperFor(aTarget),
java::SessionAccessibility::FLAG_EXPANDABLE |
(aEnabled ? java::SessionAccessibility::FLAG_EXPANDED : 0));
}
if (aState & states::SELECTED) {
sessionAcc->SendSelectedEvent(WrapperFor(aTarget), aEnabled);
}
if (aState & states::BUSY) {
sessionAcc->SendWindowStateChangedEvent(WrapperFor(aTarget));
}
}
void a11y::ProxyCaretMoveEvent(ProxyAccessible* aTarget, int32_t aOffset,
bool aIsSelectionCollapsed) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (sessionAcc) {
sessionAcc->SendTextSelectionChangedEvent(WrapperFor(aTarget), aOffset);
}
}
void a11y::ProxyTextChangeEvent(ProxyAccessible* aTarget, const nsString& aStr,
int32_t aStart, uint32_t aLen, bool aIsInsert,
bool aFromUser) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (sessionAcc) {
sessionAcc->SendTextChangedEvent(WrapperFor(aTarget), aStr, aStart, aLen,
aIsInsert, aFromUser);
}
}
void a11y::ProxyShowHideEvent(ProxyAccessible* aTarget,
ProxyAccessible* aParent, bool aInsert,
bool aFromUser) {
// We rely on the window content changed events to be dispatched
// after the viewport cache is refreshed.
}
void a11y::ProxySelectionEvent(ProxyAccessible*, ProxyAccessible*, uint32_t) {}
void a11y::ProxyVirtualCursorChangeEvent(
ProxyAccessible* aTarget, ProxyAccessible* aOldPosition,
int32_t aOldStartOffset, int32_t aOldEndOffset,
ProxyAccessible* aNewPosition, int32_t aNewStartOffset,
int32_t aNewEndOffset, int16_t aReason, int16_t aBoundaryType,
bool aFromUser) {
if (!aNewPosition || !aFromUser) {
return;
}
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (!sessionAcc) {
return;
}
if (aReason == nsIAccessiblePivot::REASON_POINT) {
sessionAcc->SendHoverEnterEvent(WrapperFor(aNewPosition));
} else if (aBoundaryType == nsIAccessiblePivot::NO_BOUNDARY) {
RefPtr<AccessibleWrap> wrapperForNewPosition = WrapperFor(aNewPosition);
sessionAcc->SendAccessibilityFocusedEvent(wrapperForNewPosition);
}
if (aBoundaryType != nsIAccessiblePivot::NO_BOUNDARY) {
sessionAcc->SendTextTraversedEvent(WrapperFor(aNewPosition),
aNewStartOffset, aNewEndOffset);
}
}
void a11y::ProxyScrollingEvent(ProxyAccessible* aTarget, uint32_t aEventType,
uint32_t aScrollX, uint32_t aScrollY,
uint32_t aMaxScrollX, uint32_t aMaxScrollY) {
if (aEventType == nsIAccessibleEvent::EVENT_SCROLLING) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (sessionAcc) {
sessionAcc->SendScrollingEvent(WrapperFor(aTarget), aScrollX, aScrollY,
aMaxScrollX, aMaxScrollY);
}
}
}
void a11y::ProxyAnnouncementEvent(ProxyAccessible* aTarget,
const nsString& aAnnouncement,
uint16_t aPriority) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aTarget);
if (sessionAcc) {
sessionAcc->SendAnnouncementEvent(WrapperFor(aTarget), aAnnouncement,
aPriority);
}
}
void a11y::ProxyBatch(ProxyAccessible* aDocument, const uint64_t aBatchType,
const nsTArray<ProxyAccessible*>& aAccessibles,
const nsTArray<BatchData>& aData) {
RefPtr<SessionAccessibility> sessionAcc =
SessionAccessibility::GetInstanceFor(aDocument);
if (!sessionAcc) {
return;
}
nsTArray<AccessibleWrap*> accWraps(aAccessibles.Length());
for (size_t i = 0; i < aAccessibles.Length(); i++) {
accWraps.AppendElement(WrapperFor(aAccessibles.ElementAt(i)));
}
switch (aBatchType) {
case DocAccessibleWrap::eBatch_Viewport:
sessionAcc->ReplaceViewportCache(accWraps, aData);
break;
case DocAccessibleWrap::eBatch_FocusPath:
sessionAcc->ReplaceFocusPathCache(accWraps, aData);
break;
case DocAccessibleWrap::eBatch_BoundsUpdate:
sessionAcc->UpdateCachedBounds(accWraps, aData);
break;
default:
MOZ_ASSERT_UNREACHABLE("Unknown batch type.");
break;
}
}
bool a11y::LocalizeString(const char* aToken, nsAString& aLocalized,
const nsTArray<nsString>& aFormatString) {
MOZ_ASSERT(XRE_IsParentProcess());
nsresult rv = NS_OK;
if (!sStringBundle) {
nsCOMPtr<nsIStringBundleService> sbs = services::GetStringBundleService();
if (NS_FAILED(rv)) {
NS_WARNING("Failed to get string bundle service");
return false;
}
nsCOMPtr<nsIStringBundle> sb;
rv = sbs->CreateBundle(ROLE_STRINGS_URL, getter_AddRefs(sb));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to get string bundle");
return false;
}
sb.forget(&sStringBundle);
}
MOZ_ASSERT(sStringBundle);
if (aFormatString.Length()) {
rv = sStringBundle->FormatStringFromName(aToken, aFormatString, aLocalized);
if (NS_SUCCEEDED(rv)) {
return true;
}
} else {
rv = sStringBundle->GetStringFromName(aToken, aLocalized);
if (NS_SUCCEEDED(rv)) {
return true;
}
}
NS_WARNING("Failed to localize string");
aLocalized.AssignLiteral("");
return false;
}
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