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Diffstat (limited to 'accessible/android/Platform.cpp')
| -rw-r--r-- | accessible/android/Platform.cpp | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/accessible/android/Platform.cpp b/accessible/android/Platform.cpp new file mode 100644 index 0000000000..da7d7f7cab --- /dev/null +++ b/accessible/android/Platform.cpp @@ -0,0 +1,267 @@ +/* -*- 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 "DocAccessibleWrap.h" +#include "SessionAccessibility.h" +#include "mozilla/a11y/RemoteAccessible.h" +#include "mozilla/Components.h" +#include "mozilla/StaticPrefs_accessibility.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 nsTHashMap<nsStringHashKey, nsString> sLocalizedStrings; + +void a11y::PlatformInit() { + nsresult rv = NS_OK; + nsCOMPtr<nsIStringBundleService> stringBundleService = + components::StringBundle::Service(); + if (!stringBundleService) return; + + nsCOMPtr<nsIStringBundle> stringBundle; + nsCOMPtr<nsIStringBundleService> sbs = components::StringBundle::Service(); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to get string bundle service"); + return; + } + + rv = sbs->CreateBundle(ROLE_STRINGS_URL, getter_AddRefs(stringBundle)); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to get string bundle"); + return; + } + + nsString localizedStr; + // Preload the state required localized string. + rv = stringBundle->GetStringFromName("stateRequired", localizedStr); + if (NS_SUCCEEDED(rv)) { + sLocalizedStrings.InsertOrUpdate(u"stateRequired"_ns, localizedStr); + } + + // Preload heading level localized descriptions 1 thru 6. + for (int32_t level = 1; level <= 6; level++) { + nsAutoString token; + token.AppendPrintf("heading-%d", level); + + nsAutoString formatString; + formatString.AppendInt(level); + AutoTArray<nsString, 1> formatParams; + formatParams.AppendElement(formatString); + rv = stringBundle->FormatStringFromName("headingLevel", formatParams, + localizedStr); + if (NS_SUCCEEDED(rv)) { + sLocalizedStrings.InsertOrUpdate(token, localizedStr); + } + } + + // Preload any roles that have localized versions +#define ROLE(geckoRole, stringRole, atkRole, macRole, macSubrole, msaaRole, \ + ia2Role, androidClass, nameRule) \ + rv = stringBundle->GetStringFromName(stringRole, localizedStr); \ + if (NS_SUCCEEDED(rv)) { \ + sLocalizedStrings.InsertOrUpdate(u##stringRole##_ns, localizedStr); \ + } + +#include "RoleMap.h" +#undef ROLE +} + +void a11y::PlatformShutdown() { sLocalizedStrings.Clear(); } + +void a11y::ProxyCreated(RemoteAccessible* aProxy) { + SessionAccessibility::RegisterAccessible(aProxy); +} + +void a11y::ProxyDestroyed(RemoteAccessible* aProxy) { + SessionAccessibility::UnregisterAccessible(aProxy); +} + +void a11y::ProxyEvent(RemoteAccessible* aTarget, uint32_t aEventType) { + RefPtr<SessionAccessibility> sessionAcc = + SessionAccessibility::GetInstanceFor(aTarget); + if (!sessionAcc) { + return; + } + + switch (aEventType) { + case nsIAccessibleEvent::EVENT_FOCUS: + sessionAcc->SendFocusEvent(aTarget); + break; + case nsIAccessibleEvent::EVENT_REORDER: + if (StaticPrefs::accessibility_cache_enabled_AtStartup()) { + sessionAcc->SendWindowContentChangedEvent(); + } + break; + default: + break; + } +} + +void a11y::ProxyStateChangeEvent(RemoteAccessible* aTarget, uint64_t aState, + bool aEnabled) { + RefPtr<SessionAccessibility> sessionAcc = + SessionAccessibility::GetInstanceFor(aTarget); + + if (!sessionAcc) { + return; + } + + if (aState & states::CHECKED) { + sessionAcc->SendClickedEvent( + aTarget, java::SessionAccessibility::FLAG_CHECKABLE | + (aEnabled ? java::SessionAccessibility::FLAG_CHECKED : 0)); + } + + if (aState & states::EXPANDED) { + sessionAcc->SendClickedEvent( + aTarget, + java::SessionAccessibility::FLAG_EXPANDABLE | + (aEnabled ? java::SessionAccessibility::FLAG_EXPANDED : 0)); + } + + if (aState & states::SELECTED) { + sessionAcc->SendSelectedEvent(aTarget, aEnabled); + } + + if (aState & states::BUSY) { + sessionAcc->SendWindowStateChangedEvent(aTarget); + } +} + +void a11y::ProxyCaretMoveEvent(RemoteAccessible* aTarget, int32_t aOffset, + bool aIsSelectionCollapsed, + int32_t aGranularity) { + RefPtr<SessionAccessibility> sessionAcc = + SessionAccessibility::GetInstanceFor(aTarget); + + if (sessionAcc) { + sessionAcc->SendTextSelectionChangedEvent(aTarget, aOffset); + } +} + +void a11y::ProxyTextChangeEvent(RemoteAccessible* aTarget, + const nsAString& aStr, int32_t aStart, + uint32_t aLen, bool aIsInsert, bool aFromUser) { + RefPtr<SessionAccessibility> sessionAcc = + SessionAccessibility::GetInstanceFor(aTarget); + + if (sessionAcc) { + sessionAcc->SendTextChangedEvent(aTarget, aStr, aStart, aLen, aIsInsert, + aFromUser); + } +} + +void a11y::ProxyShowHideEvent(RemoteAccessible* aTarget, + RemoteAccessible* 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(RemoteAccessible*, RemoteAccessible*, uint32_t) { +} + +void a11y::ProxyVirtualCursorChangeEvent( + RemoteAccessible* aTarget, RemoteAccessible* aOldPosition, + int32_t aOldStartOffset, int32_t aOldEndOffset, + RemoteAccessible* 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(aNewPosition); + } else if (aBoundaryType == nsIAccessiblePivot::NO_BOUNDARY) { + sessionAcc->SendAccessibilityFocusedEvent(aNewPosition); + } + + if (aBoundaryType != nsIAccessiblePivot::NO_BOUNDARY) { + sessionAcc->SendTextTraversedEvent(aNewPosition, aNewStartOffset, + aNewEndOffset); + } +} + +void a11y::ProxyScrollingEvent(RemoteAccessible* 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(aTarget, aScrollX, aScrollY, aMaxScrollX, + aMaxScrollY); + } + } +} + +void a11y::ProxyAnnouncementEvent(RemoteAccessible* aTarget, + const nsAString& aAnnouncement, + uint16_t aPriority) { + RefPtr<SessionAccessibility> sessionAcc = + SessionAccessibility::GetInstanceFor(aTarget); + + if (sessionAcc) { + sessionAcc->SendAnnouncementEvent(aTarget, aAnnouncement, aPriority); + } +} + +void a11y::ProxyBatch(RemoteAccessible* aDocument, const uint64_t aBatchType, + const nsTArray<RemoteAccessible*>& aAccessibles, + const nsTArray<BatchData>& aData) { + RefPtr<SessionAccessibility> sessionAcc = + SessionAccessibility::GetInstanceFor(aDocument); + if (!sessionAcc) { + return; + } + + nsTArray<Accessible*> accessibles(aAccessibles.Length()); + for (size_t i = 0; i < aAccessibles.Length(); i++) { + accessibles.AppendElement(aAccessibles.ElementAt(i)); + } + + switch (aBatchType) { + case DocAccessibleWrap::eBatch_Viewport: + sessionAcc->ReplaceViewportCache(accessibles, aData); + break; + case DocAccessibleWrap::eBatch_FocusPath: + sessionAcc->ReplaceFocusPathCache(accessibles, aData); + break; + case DocAccessibleWrap::eBatch_BoundsUpdate: + sessionAcc->UpdateCachedBounds(accessibles, aData); + break; + default: + MOZ_ASSERT_UNREACHABLE("Unknown batch type."); + break; + } +} + +bool a11y::LocalizeString(const nsAString& aToken, nsAString& aLocalized) { + MOZ_ASSERT(XRE_IsParentProcess()); + + auto str = sLocalizedStrings.Lookup(aToken); + if (str) { + aLocalized.Assign(*str); + } else { + } + + return !!str; +} |