TextInputProcessor.cpp
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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 "mozilla/dom/Event.h"
#include "mozilla/EventForwards.h"
#include "mozilla/Maybe.h"
#include "mozilla/NativeKeyBindingsType.h"
#include "mozilla/StaticPrefs_test.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEvents.h"
#include "mozilla/TextInputProcessor.h"
#include "mozilla/WritingModes.h"
#include "mozilla/widget/IMEData.h"
#include "mozilla/dom/KeyboardEvent.h"
#include "nsContentUtils.h"
#include "nsIDocShell.h"
#include "nsIWidget.h"
#include "nsPIDOMWindow.h"
#include "nsPresContext.h"
using mozilla::dom::Event;
using mozilla::dom::KeyboardEvent;
using namespace mozilla::widget;
namespace mozilla {
/******************************************************************************
* TextInputProcessorNotification
******************************************************************************/
class TextInputProcessorNotification final
: public nsITextInputProcessorNotification {
using SelectionChangeData = IMENotification::SelectionChangeData;
using SelectionChangeDataBase = IMENotification::SelectionChangeDataBase;
using TextChangeData = IMENotification::TextChangeData;
using TextChangeDataBase = IMENotification::TextChangeDataBase;
public:
explicit TextInputProcessorNotification(const char* aType)
: mType(aType), mTextChangeData() {}
explicit TextInputProcessorNotification(
const TextChangeDataBase& aTextChangeData)
: mType("notify-text-change"), mTextChangeData(aTextChangeData) {}
explicit TextInputProcessorNotification(
const SelectionChangeDataBase& aSelectionChangeData)
: mType("notify-selection-change"),
mSelectionChangeData(aSelectionChangeData) {
// SelectionChangeDataBase::mString still refers nsString instance owned
// by aSelectionChangeData. So, this needs to copy the instance.
if (aSelectionChangeData.HasRange()) {
mSelectionChangeData.mString =
new nsString(aSelectionChangeData.String());
} else {
mSelectionChangeData.mString = nullptr;
}
}
NS_DECL_ISUPPORTS
NS_IMETHOD GetType(nsACString& aType) final {
aType = mType;
return NS_OK;
}
// "notify-text-change" and "notify-selection-change"
NS_IMETHOD GetOffset(uint32_t* aOffset) final {
if (NS_WARN_IF(!aOffset)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
if (!mSelectionChangeData.HasRange()) {
return NS_ERROR_NOT_AVAILABLE;
}
*aOffset = mSelectionChangeData.mOffset;
return NS_OK;
}
if (IsTextChange()) {
*aOffset = mTextChangeData.mStartOffset;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
// "notify-selection-change"
NS_IMETHOD GetHasRange(bool* aHasRange) final {
if (IsSelectionChange()) {
*aHasRange = mSelectionChangeData.HasRange();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetText(nsAString& aText) final {
if (IsSelectionChange()) {
if (!mSelectionChangeData.HasRange()) {
return NS_ERROR_NOT_AVAILABLE;
}
aText = mSelectionChangeData.String();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetCollapsed(bool* aCollapsed) final {
if (NS_WARN_IF(!aCollapsed)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
*aCollapsed = mSelectionChangeData.IsCollapsed();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetLength(uint32_t* aLength) final {
if (NS_WARN_IF(!aLength)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
if (!mSelectionChangeData.HasRange()) {
return NS_ERROR_NOT_AVAILABLE;
}
*aLength = mSelectionChangeData.Length();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetReversed(bool* aReversed) final {
if (NS_WARN_IF(!aReversed)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
if (!mSelectionChangeData.HasRange()) {
return NS_ERROR_NOT_AVAILABLE;
}
*aReversed = mSelectionChangeData.mReversed;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetWritingMode(nsACString& aWritingMode) final {
if (IsSelectionChange()) {
WritingMode writingMode = mSelectionChangeData.GetWritingMode();
if (!writingMode.IsVertical()) {
aWritingMode.AssignLiteral("horizontal-tb");
} else if (writingMode.IsVerticalLR()) {
aWritingMode.AssignLiteral("vertical-lr");
} else {
aWritingMode.AssignLiteral("vertical-rl");
}
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetCausedByComposition(bool* aCausedByComposition) final {
if (NS_WARN_IF(!aCausedByComposition)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
*aCausedByComposition = mSelectionChangeData.mCausedByComposition;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetCausedBySelectionEvent(bool* aCausedBySelectionEvent) final {
if (NS_WARN_IF(!aCausedBySelectionEvent)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
*aCausedBySelectionEvent = mSelectionChangeData.mCausedBySelectionEvent;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetOccurredDuringComposition(
bool* aOccurredDuringComposition) final {
if (NS_WARN_IF(!aOccurredDuringComposition)) {
return NS_ERROR_INVALID_ARG;
}
if (IsSelectionChange()) {
*aOccurredDuringComposition =
mSelectionChangeData.mOccurredDuringComposition;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
// "notify-text-change"
NS_IMETHOD GetRemovedLength(uint32_t* aLength) final {
if (NS_WARN_IF(!aLength)) {
return NS_ERROR_INVALID_ARG;
}
if (IsTextChange()) {
*aLength = mTextChangeData.OldLength();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetAddedLength(uint32_t* aLength) final {
if (NS_WARN_IF(!aLength)) {
return NS_ERROR_INVALID_ARG;
}
if (IsTextChange()) {
*aLength = mTextChangeData.NewLength();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetCausedOnlyByComposition(bool* aCausedOnlyByComposition) final {
if (NS_WARN_IF(!aCausedOnlyByComposition)) {
return NS_ERROR_INVALID_ARG;
}
if (IsTextChange()) {
*aCausedOnlyByComposition = mTextChangeData.mCausedOnlyByComposition;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetIncludingChangesDuringComposition(
bool* aIncludingChangesDuringComposition) final {
if (NS_WARN_IF(!aIncludingChangesDuringComposition)) {
return NS_ERROR_INVALID_ARG;
}
if (IsTextChange()) {
*aIncludingChangesDuringComposition =
mTextChangeData.mIncludingChangesDuringComposition;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHOD GetIncludingChangesWithoutComposition(
bool* aIncludingChangesWithoutComposition) final {
if (NS_WARN_IF(!aIncludingChangesWithoutComposition)) {
return NS_ERROR_INVALID_ARG;
}
if (IsTextChange()) {
*aIncludingChangesWithoutComposition =
mTextChangeData.mIncludingChangesWithoutComposition;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
protected:
virtual ~TextInputProcessorNotification() {
if (IsSelectionChange() && mSelectionChangeData.mString) {
delete mSelectionChangeData.mString;
mSelectionChangeData.mString = nullptr;
}
}
bool IsTextChange() const {
return mType.EqualsLiteral("notify-text-change");
}
bool IsSelectionChange() const {
return mType.EqualsLiteral("notify-selection-change");
}
private:
nsAutoCString mType;
union {
TextChangeDataBase mTextChangeData;
SelectionChangeDataBase mSelectionChangeData;
};
TextInputProcessorNotification() : mTextChangeData() {}
};
NS_IMPL_ISUPPORTS(TextInputProcessorNotification,
nsITextInputProcessorNotification)
/******************************************************************************
* TextInputProcessor
******************************************************************************/
NS_IMPL_ISUPPORTS(TextInputProcessor, nsITextInputProcessor,
TextEventDispatcherListener, nsISupportsWeakReference)
TextInputProcessor::TextInputProcessor()
: mDispatcher(nullptr), mForTests(false) {}
TextInputProcessor::~TextInputProcessor() {
if (mDispatcher && mDispatcher->IsComposing()) {
// If this is composing and not canceling the composition, nobody can steal
// the rights of TextEventDispatcher from this instance. Therefore, this
// needs to cancel the composition here.
if (NS_SUCCEEDED(IsValidStateForComposition())) {
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
nsEventStatus status = nsEventStatus_eIgnore;
kungFuDeathGrip->CommitComposition(status, &EmptyString());
}
}
}
bool TextInputProcessor::IsComposing() const {
return mDispatcher && mDispatcher->IsComposing();
}
NS_IMETHODIMP
TextInputProcessor::GetHasComposition(bool* aHasComposition) {
MOZ_RELEASE_ASSERT(aHasComposition, "aHasComposition must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
*aHasComposition = IsComposing();
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::BeginInputTransaction(
mozIDOMWindow* aWindow, nsITextInputProcessorCallback* aCallback,
bool* aSucceeded) {
MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
if (NS_WARN_IF(!aCallback)) {
*aSucceeded = false;
return NS_ERROR_INVALID_ARG;
}
return BeginInputTransactionInternal(aWindow, aCallback, false, *aSucceeded);
}
NS_IMETHODIMP
TextInputProcessor::BeginInputTransactionForTests(
mozIDOMWindow* aWindow, nsITextInputProcessorCallback* aCallback,
uint8_t aOptionalArgc, bool* aSucceeded) {
MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
nsITextInputProcessorCallback* callback =
aOptionalArgc >= 1 ? aCallback : nullptr;
return BeginInputTransactionInternal(aWindow, callback, true, *aSucceeded);
}
nsresult TextInputProcessor::BeginInputTransactionForFuzzing(
nsPIDOMWindowInner* aWindow, nsITextInputProcessorCallback* aCallback,
bool* aSucceeded) {
MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
return BeginInputTransactionInternal(aWindow, aCallback, false, *aSucceeded);
}
nsresult TextInputProcessor::BeginInputTransactionInternal(
mozIDOMWindow* aWindow, nsITextInputProcessorCallback* aCallback,
bool aForTests, bool& aSucceeded) {
aSucceeded = false;
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsPIDOMWindowInner> pWindow = nsPIDOMWindowInner::From(aWindow);
if (NS_WARN_IF(!pWindow)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIDocShell> docShell(pWindow->GetDocShell());
if (NS_WARN_IF(!docShell)) {
return NS_ERROR_FAILURE;
}
RefPtr<nsPresContext> presContext = docShell->GetPresContext();
if (NS_WARN_IF(!presContext)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIWidget> widget = presContext->GetRootWidget();
if (NS_WARN_IF(!widget)) {
return NS_ERROR_FAILURE;
}
RefPtr<TextEventDispatcher> dispatcher = widget->GetTextEventDispatcher();
MOZ_RELEASE_ASSERT(dispatcher, "TextEventDispatcher must not be null");
// If the instance was initialized and is being initialized for same
// dispatcher and same purpose, we don't need to initialize the dispatcher
// again.
if (mDispatcher && dispatcher == mDispatcher && aCallback == mCallback &&
aForTests == mForTests) {
aSucceeded = true;
return NS_OK;
}
// If this instance is composing or dispatching an event, don't allow to
// initialize again. Especially, if we allow to begin input transaction with
// another TextEventDispatcher during dispatching an event, it may cause that
// nobody cannot begin input transaction with it if the last event causes
// opening modal dialog.
if (mDispatcher &&
(mDispatcher->IsComposing() || mDispatcher->IsDispatchingEvent())) {
return NS_ERROR_ALREADY_INITIALIZED;
}
// And also if another instance is composing with the new dispatcher or
// dispatching an event, it'll fail to steal its ownership. Then, we should
// not throw an exception, just return false.
if (dispatcher->IsComposing() || dispatcher->IsDispatchingEvent()) {
return NS_OK;
}
// This instance has finished preparing to link to the dispatcher. Therefore,
// let's forget the old dispatcher and purpose.
if (mDispatcher) {
mDispatcher->EndInputTransaction(this);
if (NS_WARN_IF(mDispatcher)) {
// Forcibly initialize the members if we failed to end the input
// transaction.
UnlinkFromTextEventDispatcher();
}
}
nsresult rv = NS_OK;
if (aForTests) {
bool isAPZAware = StaticPrefs::test_events_async_enabled();
rv = dispatcher->BeginTestInputTransaction(this, isAPZAware);
} else {
rv = dispatcher->BeginInputTransaction(this);
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mDispatcher = dispatcher;
mCallback = aCallback;
mForTests = aForTests;
aSucceeded = true;
return NS_OK;
}
void TextInputProcessor::UnlinkFromTextEventDispatcher() {
mDispatcher = nullptr;
mForTests = false;
if (mCallback) {
nsCOMPtr<nsITextInputProcessorCallback> callback(mCallback);
mCallback = nullptr;
RefPtr<TextInputProcessorNotification> notification =
new TextInputProcessorNotification("notify-end-input-transaction");
bool result = false;
callback->OnNotify(this, notification, &result);
}
}
nsresult TextInputProcessor::IsValidStateForComposition() {
if (NS_WARN_IF(!mDispatcher)) {
return NS_ERROR_NOT_INITIALIZED;
}
nsresult rv = mDispatcher->GetState();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
bool TextInputProcessor::IsValidEventTypeForComposition(
const WidgetKeyboardEvent& aKeyboardEvent) const {
// The key event type of composition methods must be "", "keydown" or "keyup".
if (aKeyboardEvent.mMessage == eKeyDown ||
aKeyboardEvent.mMessage == eKeyUp) {
return true;
}
if (aKeyboardEvent.mMessage == eUnidentifiedEvent &&
aKeyboardEvent.mSpecifiedEventType &&
nsDependentAtomString(aKeyboardEvent.mSpecifiedEventType)
.EqualsLiteral("on")) {
return true;
}
return false;
}
TextInputProcessor::EventDispatcherResult
TextInputProcessor::MaybeDispatchKeydownForComposition(
const WidgetKeyboardEvent* aKeyboardEvent, uint32_t aKeyFlags) {
EventDispatcherResult result;
result.mResult = IsValidStateForComposition();
if (NS_WARN_IF(NS_FAILED(result.mResult))) {
result.mCanContinue = false;
return result;
}
if (!aKeyboardEvent) {
return result;
}
// If the mMessage is eKeyUp, the caller doesn't want TIP to dispatch
// eKeyDown event.
if (aKeyboardEvent->mMessage == eKeyUp) {
return result;
}
// Modifier keys are not allowed because managing modifier state in this
// method makes this messy.
if (NS_WARN_IF(aKeyboardEvent->IsModifierKeyEvent())) {
result.mResult = NS_ERROR_INVALID_ARG;
result.mCanContinue = false;
return result;
}
uint32_t consumedFlags = 0;
result.mResult =
KeydownInternal(*aKeyboardEvent, aKeyFlags, false, consumedFlags);
result.mDoDefault = !consumedFlags;
if (NS_WARN_IF(NS_FAILED(result.mResult))) {
result.mCanContinue = false;
return result;
}
result.mCanContinue = NS_SUCCEEDED(IsValidStateForComposition());
return result;
}
TextInputProcessor::EventDispatcherResult
TextInputProcessor::MaybeDispatchKeyupForComposition(
const WidgetKeyboardEvent* aKeyboardEvent, uint32_t aKeyFlags) {
EventDispatcherResult result;
if (!aKeyboardEvent) {
return result;
}
// If the mMessage is eKeyDown, the caller doesn't want TIP to dispatch
// eKeyUp event.
if (aKeyboardEvent->mMessage == eKeyDown) {
return result;
}
// If the widget has been destroyed, we can do nothing here.
result.mResult = IsValidStateForComposition();
if (NS_FAILED(result.mResult)) {
result.mCanContinue = false;
return result;
}
result.mResult = KeyupInternal(*aKeyboardEvent, aKeyFlags, result.mDoDefault);
if (NS_WARN_IF(NS_FAILED(result.mResult))) {
result.mCanContinue = false;
return result;
}
result.mCanContinue = NS_SUCCEEDED(IsValidStateForComposition());
return result;
}
nsresult TextInputProcessor::PrepareKeyboardEventForComposition(
KeyboardEvent* aDOMKeyEvent, uint32_t& aKeyFlags, uint8_t aOptionalArgc,
WidgetKeyboardEvent*& aKeyboardEvent) {
aKeyboardEvent = nullptr;
aKeyboardEvent = aOptionalArgc && aDOMKeyEvent
? aDOMKeyEvent->WidgetEventPtr()->AsKeyboardEvent()
: nullptr;
if (!aKeyboardEvent || aOptionalArgc < 2) {
aKeyFlags = 0;
}
if (!aKeyboardEvent) {
return NS_OK;
}
if (NS_WARN_IF(!IsValidEventTypeForComposition(*aKeyboardEvent))) {
return NS_ERROR_INVALID_ARG;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::StartComposition(Event* aDOMKeyEvent, uint32_t aKeyFlags,
uint8_t aOptionalArgc, bool* aSucceeded) {
MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
*aSucceeded = false;
RefPtr<KeyboardEvent> keyEvent;
if (aDOMKeyEvent) {
keyEvent = aDOMKeyEvent->AsKeyboardEvent();
if (NS_WARN_IF(!keyEvent)) {
return NS_ERROR_INVALID_ARG;
}
}
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
WidgetKeyboardEvent* keyboardEvent;
nsresult rv = PrepareKeyboardEventForComposition(
keyEvent, aKeyFlags, aOptionalArgc, keyboardEvent);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
EventDispatcherResult dispatcherResult =
MaybeDispatchKeydownForComposition(keyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(dispatcherResult.mResult)) ||
!dispatcherResult.mCanContinue) {
return dispatcherResult.mResult;
}
if (dispatcherResult.mDoDefault) {
nsEventStatus status = nsEventStatus_eIgnore;
rv = kungFuDeathGrip->StartComposition(status);
*aSucceeded = status != nsEventStatus_eConsumeNoDefault &&
kungFuDeathGrip && kungFuDeathGrip->IsComposing();
}
MaybeDispatchKeyupForComposition(keyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::SetPendingCompositionString(const nsAString& aString) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
nsresult rv = IsValidStateForComposition();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return kungFuDeathGrip->SetPendingCompositionString(aString);
}
NS_IMETHODIMP
TextInputProcessor::AppendClauseToPendingComposition(uint32_t aLength,
uint32_t aAttribute) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
TextRangeType textRangeType;
switch (aAttribute) {
case ATTR_RAW_CLAUSE:
case ATTR_SELECTED_RAW_CLAUSE:
case ATTR_CONVERTED_CLAUSE:
case ATTR_SELECTED_CLAUSE:
textRangeType = ToTextRangeType(aAttribute);
break;
default:
return NS_ERROR_INVALID_ARG;
}
nsresult rv = IsValidStateForComposition();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return kungFuDeathGrip->AppendClauseToPendingComposition(aLength,
textRangeType);
}
NS_IMETHODIMP
TextInputProcessor::SetCaretInPendingComposition(uint32_t aOffset) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
nsresult rv = IsValidStateForComposition();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return kungFuDeathGrip->SetCaretInPendingComposition(aOffset, 0);
}
NS_IMETHODIMP
TextInputProcessor::FlushPendingComposition(Event* aDOMKeyEvent,
uint32_t aKeyFlags,
uint8_t aOptionalArgc,
bool* aSucceeded) {
MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
// Even if this doesn't flush pending composition actually, we need to reset
// pending composition for starting next composition with new user input.
AutoPendingCompositionResetter resetter(this);
*aSucceeded = false;
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
bool wasComposing = IsComposing();
RefPtr<KeyboardEvent> keyEvent;
if (aDOMKeyEvent) {
keyEvent = aDOMKeyEvent->AsKeyboardEvent();
if (NS_WARN_IF(!keyEvent)) {
return NS_ERROR_INVALID_ARG;
}
}
WidgetKeyboardEvent* keyboardEvent;
nsresult rv = PrepareKeyboardEventForComposition(
keyEvent, aKeyFlags, aOptionalArgc, keyboardEvent);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
EventDispatcherResult dispatcherResult =
MaybeDispatchKeydownForComposition(keyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(dispatcherResult.mResult)) ||
!dispatcherResult.mCanContinue) {
return dispatcherResult.mResult;
}
// Even if the preceding keydown event was consumed, if the composition
// was already started, we shouldn't prevent the change of composition.
if (dispatcherResult.mDoDefault || wasComposing) {
// Preceding keydown event may cause destroying the widget.
if (NS_FAILED(IsValidStateForComposition())) {
return NS_OK;
}
nsEventStatus status = nsEventStatus_eIgnore;
rv = kungFuDeathGrip->FlushPendingComposition(status);
*aSucceeded = status != nsEventStatus_eConsumeNoDefault;
}
MaybeDispatchKeyupForComposition(keyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::CommitComposition(Event* aDOMKeyEvent, uint32_t aKeyFlags,
uint8_t aOptionalArgc) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
RefPtr<KeyboardEvent> keyEvent;
if (aDOMKeyEvent) {
keyEvent = aDOMKeyEvent->AsKeyboardEvent();
if (NS_WARN_IF(!keyEvent)) {
return NS_ERROR_INVALID_ARG;
}
}
WidgetKeyboardEvent* keyboardEvent;
nsresult rv = PrepareKeyboardEventForComposition(
keyEvent, aKeyFlags, aOptionalArgc, keyboardEvent);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return CommitCompositionInternal(keyboardEvent, aKeyFlags);
}
NS_IMETHODIMP
TextInputProcessor::CommitCompositionWith(const nsAString& aCommitString,
Event* aDOMKeyEvent,
uint32_t aKeyFlags,
uint8_t aOptionalArgc,
bool* aSucceeded) {
MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
RefPtr<KeyboardEvent> keyEvent;
if (aDOMKeyEvent) {
keyEvent = aDOMKeyEvent->AsKeyboardEvent();
if (NS_WARN_IF(!keyEvent)) {
return NS_ERROR_INVALID_ARG;
}
}
WidgetKeyboardEvent* keyboardEvent;
nsresult rv = PrepareKeyboardEventForComposition(
keyEvent, aKeyFlags, aOptionalArgc, keyboardEvent);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return CommitCompositionInternal(keyboardEvent, aKeyFlags, &aCommitString,
aSucceeded);
}
nsresult TextInputProcessor::CommitCompositionInternal(
const WidgetKeyboardEvent* aKeyboardEvent, uint32_t aKeyFlags,
const nsAString* aCommitString, bool* aSucceeded) {
if (aSucceeded) {
*aSucceeded = false;
}
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
bool wasComposing = IsComposing();
EventDispatcherResult dispatcherResult =
MaybeDispatchKeydownForComposition(aKeyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(dispatcherResult.mResult)) ||
!dispatcherResult.mCanContinue) {
return dispatcherResult.mResult;
}
// Even if the preceding keydown event was consumed, if the composition
// was already started, we shouldn't prevent the commit of composition.
nsresult rv = NS_OK;
if (dispatcherResult.mDoDefault || wasComposing) {
// Preceding keydown event may cause destroying the widget.
if (NS_FAILED(IsValidStateForComposition())) {
return NS_OK;
}
nsEventStatus status = nsEventStatus_eIgnore;
rv = kungFuDeathGrip->CommitComposition(status, aCommitString);
if (aSucceeded) {
*aSucceeded = status != nsEventStatus_eConsumeNoDefault;
}
}
MaybeDispatchKeyupForComposition(aKeyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::CancelComposition(Event* aDOMKeyEvent, uint32_t aKeyFlags,
uint8_t aOptionalArgc) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
RefPtr<KeyboardEvent> keyEvent;
if (aDOMKeyEvent) {
keyEvent = aDOMKeyEvent->AsKeyboardEvent();
if (NS_WARN_IF(!keyEvent)) {
return NS_ERROR_INVALID_ARG;
}
}
WidgetKeyboardEvent* keyboardEvent;
nsresult rv = PrepareKeyboardEventForComposition(
keyEvent, aKeyFlags, aOptionalArgc, keyboardEvent);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return CancelCompositionInternal(keyboardEvent, aKeyFlags);
}
nsresult TextInputProcessor::CancelCompositionInternal(
const WidgetKeyboardEvent* aKeyboardEvent, uint32_t aKeyFlags) {
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
EventDispatcherResult dispatcherResult =
MaybeDispatchKeydownForComposition(aKeyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(dispatcherResult.mResult)) ||
!dispatcherResult.mCanContinue) {
return dispatcherResult.mResult;
}
nsEventStatus status = nsEventStatus_eIgnore;
nsresult rv = kungFuDeathGrip->CommitComposition(status, &EmptyString());
MaybeDispatchKeyupForComposition(aKeyboardEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::NotifyIME(TextEventDispatcher* aTextEventDispatcher,
const IMENotification& aNotification) {
// If This is called while this is being initialized, ignore the call.
// In such case, this method should return NS_ERROR_NOT_IMPLEMENTED because
// we can say, TextInputProcessor doesn't implement any handlers of the
// requests and notifications.
if (!mDispatcher) {
return NS_ERROR_NOT_IMPLEMENTED;
}
MOZ_ASSERT(aTextEventDispatcher == mDispatcher,
"Wrong TextEventDispatcher notifies this");
NS_ASSERTION(mForTests || mCallback,
"mCallback can be null only when IME is initialized for tests");
if (mCallback) {
RefPtr<TextInputProcessorNotification> notification;
switch (aNotification.mMessage) {
case REQUEST_TO_COMMIT_COMPOSITION: {
NS_ASSERTION(aTextEventDispatcher->IsComposing(),
"Why is this requested without composition?");
notification = new TextInputProcessorNotification("request-to-commit");
break;
}
case REQUEST_TO_CANCEL_COMPOSITION: {
NS_ASSERTION(aTextEventDispatcher->IsComposing(),
"Why is this requested without composition?");
notification = new TextInputProcessorNotification("request-to-cancel");
break;
}
case NOTIFY_IME_OF_FOCUS:
notification = new TextInputProcessorNotification("notify-focus");
break;
case NOTIFY_IME_OF_BLUR:
notification = new TextInputProcessorNotification("notify-blur");
break;
case NOTIFY_IME_OF_TEXT_CHANGE:
notification =
new TextInputProcessorNotification(aNotification.mTextChangeData);
break;
case NOTIFY_IME_OF_SELECTION_CHANGE:
notification = new TextInputProcessorNotification(
aNotification.mSelectionChangeData);
break;
case NOTIFY_IME_OF_POSITION_CHANGE:
notification =
new TextInputProcessorNotification("notify-position-change");
break;
default:
return NS_ERROR_NOT_IMPLEMENTED;
}
MOZ_RELEASE_ASSERT(notification);
bool result = false;
nsresult rv = mCallback->OnNotify(this, notification, &result);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return result ? NS_OK : NS_ERROR_FAILURE;
}
switch (aNotification.mMessage) {
case REQUEST_TO_COMMIT_COMPOSITION: {
NS_ASSERTION(aTextEventDispatcher->IsComposing(),
"Why is this requested without composition?");
CommitCompositionInternal();
return NS_OK;
}
case REQUEST_TO_CANCEL_COMPOSITION: {
NS_ASSERTION(aTextEventDispatcher->IsComposing(),
"Why is this requested without composition?");
CancelCompositionInternal();
return NS_OK;
}
default:
return NS_ERROR_NOT_IMPLEMENTED;
}
}
NS_IMETHODIMP_(IMENotificationRequests)
TextInputProcessor::GetIMENotificationRequests() {
// TextInputProcessor should support all change notifications.
return IMENotificationRequests(
IMENotificationRequests::NOTIFY_TEXT_CHANGE |
IMENotificationRequests::NOTIFY_POSITION_CHANGE);
}
NS_IMETHODIMP_(void)
TextInputProcessor::OnRemovedFrom(TextEventDispatcher* aTextEventDispatcher) {
// If This is called while this is being initialized, ignore the call.
if (!mDispatcher) {
return;
}
MOZ_ASSERT(aTextEventDispatcher == mDispatcher,
"Wrong TextEventDispatcher notifies this");
UnlinkFromTextEventDispatcher();
}
NS_IMETHODIMP_(void)
TextInputProcessor::WillDispatchKeyboardEvent(
TextEventDispatcher* aTextEventDispatcher,
WidgetKeyboardEvent& aKeyboardEvent, uint32_t aIndexOfKeypress,
void* aData) {
// TextInputProcessor doesn't set alternative char code nor modify charCode
// even when Ctrl key is pressed.
}
nsresult TextInputProcessor::PrepareKeyboardEventToDispatch(
WidgetKeyboardEvent& aKeyboardEvent, uint32_t aKeyFlags) {
if (NS_WARN_IF(aKeyboardEvent.mCodeNameIndex == CODE_NAME_INDEX_USE_STRING)) {
return NS_ERROR_INVALID_ARG;
}
if ((aKeyFlags & KEY_NON_PRINTABLE_KEY) &&
NS_WARN_IF(aKeyboardEvent.mKeyNameIndex == KEY_NAME_INDEX_USE_STRING)) {
return NS_ERROR_INVALID_ARG;
}
if ((aKeyFlags & KEY_FORCE_PRINTABLE_KEY) &&
aKeyboardEvent.mKeyNameIndex != KEY_NAME_INDEX_USE_STRING) {
aKeyboardEvent.GetDOMKeyName(aKeyboardEvent.mKeyValue);
aKeyboardEvent.mKeyNameIndex = KEY_NAME_INDEX_USE_STRING;
}
if (aKeyFlags & KEY_KEEP_KEY_LOCATION_STANDARD) {
// If .location is initialized with specific value, using
// KEY_KEEP_KEY_LOCATION_STANDARD must be a bug of the caller.
// Let's throw an exception for notifying the developer of this bug.
if (NS_WARN_IF(aKeyboardEvent.mLocation)) {
return NS_ERROR_INVALID_ARG;
}
} else if (!aKeyboardEvent.mLocation) {
// If KeyboardEvent.mLocation is 0, it may be uninitialized. If so, we
// should compute proper mLocation value from its .code value.
aKeyboardEvent.mLocation =
WidgetKeyboardEvent::ComputeLocationFromCodeValue(
aKeyboardEvent.mCodeNameIndex);
}
if (aKeyFlags & KEY_KEEP_KEYCODE_ZERO) {
// If .keyCode is initialized with specific value, using
// KEY_KEEP_KEYCODE_ZERO must be a bug of the caller. Let's throw an
// exception for notifying the developer of such bug.
if (NS_WARN_IF(aKeyboardEvent.mKeyCode)) {
return NS_ERROR_INVALID_ARG;
}
} else if (!aKeyboardEvent.mKeyCode &&
aKeyboardEvent.mKeyNameIndex > KEY_NAME_INDEX_Unidentified &&
aKeyboardEvent.mKeyNameIndex < KEY_NAME_INDEX_USE_STRING) {
// If KeyboardEvent.keyCode is 0, it may be uninitialized. If so, we may
// be able to decide a good .keyCode value if the .key value is a
// non-printable key.
aKeyboardEvent.mKeyCode =
WidgetKeyboardEvent::ComputeKeyCodeFromKeyNameIndex(
aKeyboardEvent.mKeyNameIndex);
}
aKeyboardEvent.mIsSynthesizedByTIP = true;
aKeyboardEvent.mFlags.mIsSynthesizedForTests = mForTests;
return NS_OK;
}
nsresult TextInputProcessor::InitEditCommands(
WidgetKeyboardEvent& aKeyboardEvent) const {
MOZ_ASSERT(XRE_IsContentProcess());
MOZ_ASSERT(aKeyboardEvent.mMessage == eKeyPress);
// When this emulates real input only in content process, we need to
// initialize edit commands with the main process's widget via PuppetWidget
// because they are initialized by BrowserParent before content process treats
// them.
// And also when this synthesizes keyboard events for tests, we need default
// shortcut keys on the platform for making any developers get constant
// results in any environments.
// Note that retrieving edit commands via PuppetWidget is expensive.
// Let's skip it when the keyboard event is inputting text.
if (aKeyboardEvent.IsInputtingText()) {
aKeyboardEvent.PreventNativeKeyBindings();
return NS_OK;
}
Maybe<WritingMode> writingMode;
if (RefPtr<TextEventDispatcher> dispatcher = mDispatcher) {
writingMode = dispatcher->MaybeQueryWritingModeAtSelection();
}
// FYI: WidgetKeyboardEvent::InitAllEditCommands() isn't available here
// since it checks whether it's called in the main process to
// avoid performance issues so that we need to initialize each
// command manually here.
if (NS_WARN_IF(!aKeyboardEvent.InitEditCommandsFor(
NativeKeyBindingsType::SingleLineEditor, writingMode))) {
return NS_ERROR_NOT_AVAILABLE;
}
if (NS_WARN_IF(!aKeyboardEvent.InitEditCommandsFor(
NativeKeyBindingsType::MultiLineEditor, writingMode))) {
return NS_ERROR_NOT_AVAILABLE;
}
if (NS_WARN_IF(!aKeyboardEvent.InitEditCommandsFor(
NativeKeyBindingsType::RichTextEditor, writingMode))) {
return NS_ERROR_NOT_AVAILABLE;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::Keydown(Event* aDOMKeyEvent, uint32_t aKeyFlags,
uint8_t aOptionalArgc, uint32_t* aConsumedFlags) {
MOZ_RELEASE_ASSERT(aConsumedFlags, "aConsumedFlags must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
if (!aOptionalArgc) {
aKeyFlags = 0;
}
if (NS_WARN_IF(!aDOMKeyEvent)) {
return NS_ERROR_INVALID_ARG;
}
WidgetKeyboardEvent* originalKeyEvent =
aDOMKeyEvent->WidgetEventPtr()->AsKeyboardEvent();
if (NS_WARN_IF(!originalKeyEvent)) {
return NS_ERROR_INVALID_ARG;
}
return KeydownInternal(*originalKeyEvent, aKeyFlags, true, *aConsumedFlags);
}
nsresult TextInputProcessor::Keydown(const WidgetKeyboardEvent& aKeyboardEvent,
uint32_t aKeyFlags,
uint32_t* aConsumedFlags) {
uint32_t consumedFlags = 0;
return KeydownInternal(aKeyboardEvent, aKeyFlags, true,
aConsumedFlags ? *aConsumedFlags : consumedFlags);
}
nsresult TextInputProcessor::KeydownInternal(
const WidgetKeyboardEvent& aKeyboardEvent, uint32_t aKeyFlags,
bool aAllowToDispatchKeypress, uint32_t& aConsumedFlags) {
aConsumedFlags = KEYEVENT_NOT_CONSUMED;
// We shouldn't modify the internal WidgetKeyboardEvent.
WidgetKeyboardEvent keyEvent(aKeyboardEvent);
keyEvent.mFlags.mIsTrusted = true;
keyEvent.mMessage = eKeyDown;
nsresult rv = PrepareKeyboardEventToDispatch(keyEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aConsumedFlags = (aKeyFlags & KEY_DEFAULT_PREVENTED) ? KEYDOWN_IS_CONSUMED
: KEYEVENT_NOT_CONSUMED;
if (WidgetKeyboardEvent::GetModifierForKeyName(keyEvent.mKeyNameIndex)) {
ModifierKeyData modifierKeyData(keyEvent);
if (WidgetKeyboardEvent::IsLockableModifier(keyEvent.mKeyNameIndex)) {
// If the modifier key is lockable modifier key such as CapsLock,
// let's toggle modifier key state at keydown.
ToggleModifierKey(modifierKeyData);
} else {
// Activate modifier flag before dispatching keydown event (i.e., keydown
// event should indicate the releasing modifier is active.
ActivateModifierKey(modifierKeyData);
}
if (aKeyFlags & KEY_DONT_DISPATCH_MODIFIER_KEY_EVENT) {
return NS_OK;
}
} else if (NS_WARN_IF(aKeyFlags & KEY_DONT_DISPATCH_MODIFIER_KEY_EVENT)) {
return NS_ERROR_INVALID_ARG;
}
keyEvent.mModifiers = GetActiveModifiers();
if (!aAllowToDispatchKeypress &&
!(aKeyFlags & KEY_DONT_MARK_KEYDOWN_AS_PROCESSED)) {
keyEvent.mKeyCode = NS_VK_PROCESSKEY;
keyEvent.mKeyNameIndex = KEY_NAME_INDEX_Process;
}
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
rv = IsValidStateForComposition();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsEventStatus status =
aConsumedFlags ? nsEventStatus_eConsumeNoDefault : nsEventStatus_eIgnore;
if (!kungFuDeathGrip->DispatchKeyboardEvent(eKeyDown, keyEvent, status)) {
// If keydown event isn't dispatched, we don't need to dispatch keypress
// events.
return NS_OK;
}
aConsumedFlags |= (status == nsEventStatus_eConsumeNoDefault)
? KEYDOWN_IS_CONSUMED
: KEYEVENT_NOT_CONSUMED;
if (!aAllowToDispatchKeypress) {
return NS_OK;
}
keyEvent.mMessage = eKeyPress;
// Only `eKeyPress` events, editor wants to execute system default edit
// commands mapped to the key combination. In e10s world, edit commands can
// be retrieved only in the parent process due to the performance reason.
// Therefore, BrowserParent initializes edit commands for all cases before
// sending the event to focused content process. For emulating this, we
// need to do it now for synthesizing `eKeyPress` events if and only if
// we're dispatching the events in a content process.
if (XRE_IsContentProcess()) {
nsresult rv = InitEditCommands(keyEvent);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
if (kungFuDeathGrip->MaybeDispatchKeypressEvents(keyEvent, status)) {
aConsumedFlags |= (status == nsEventStatus_eConsumeNoDefault)
? KEYPRESS_IS_CONSUMED
: KEYEVENT_NOT_CONSUMED;
}
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::Keyup(Event* aDOMKeyEvent, uint32_t aKeyFlags,
uint8_t aOptionalArgc, bool* aDoDefault) {
MOZ_RELEASE_ASSERT(aDoDefault, "aDoDefault must not be nullptr");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
if (!aOptionalArgc) {
aKeyFlags = 0;
}
if (NS_WARN_IF(!aDOMKeyEvent)) {
return NS_ERROR_INVALID_ARG;
}
WidgetKeyboardEvent* originalKeyEvent =
aDOMKeyEvent->WidgetEventPtr()->AsKeyboardEvent();
if (NS_WARN_IF(!originalKeyEvent)) {
return NS_ERROR_INVALID_ARG;
}
return KeyupInternal(*originalKeyEvent, aKeyFlags, *aDoDefault);
}
nsresult TextInputProcessor::Keyup(const WidgetKeyboardEvent& aKeyboardEvent,
uint32_t aKeyFlags, bool* aDoDefault) {
bool doDefault = false;
return KeyupInternal(aKeyboardEvent, aKeyFlags,
aDoDefault ? *aDoDefault : doDefault);
}
nsresult TextInputProcessor::KeyupInternal(
const WidgetKeyboardEvent& aKeyboardEvent, uint32_t aKeyFlags,
bool& aDoDefault) {
aDoDefault = false;
// We shouldn't modify the internal WidgetKeyboardEvent.
WidgetKeyboardEvent keyEvent(aKeyboardEvent);
keyEvent.mFlags.mIsTrusted = true;
keyEvent.mMessage = eKeyUp;
nsresult rv = PrepareKeyboardEventToDispatch(keyEvent, aKeyFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aDoDefault = !(aKeyFlags & KEY_DEFAULT_PREVENTED);
if (WidgetKeyboardEvent::GetModifierForKeyName(keyEvent.mKeyNameIndex)) {
if (!WidgetKeyboardEvent::IsLockableModifier(keyEvent.mKeyNameIndex)) {
// Inactivate modifier flag before dispatching keyup event (i.e., keyup
// event shouldn't indicate the releasing modifier is active.
InactivateModifierKey(ModifierKeyData(keyEvent));
}
if (aKeyFlags & KEY_DONT_DISPATCH_MODIFIER_KEY_EVENT) {
return NS_OK;
}
} else if (NS_WARN_IF(aKeyFlags & KEY_DONT_DISPATCH_MODIFIER_KEY_EVENT)) {
return NS_ERROR_INVALID_ARG;
}
keyEvent.mModifiers = GetActiveModifiers();
if (aKeyFlags & KEY_MARK_KEYUP_AS_PROCESSED) {
keyEvent.mKeyCode = NS_VK_PROCESSKEY;
keyEvent.mKeyNameIndex = KEY_NAME_INDEX_Process;
}
RefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
rv = IsValidStateForComposition();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsEventStatus status =
aDoDefault ? nsEventStatus_eIgnore : nsEventStatus_eConsumeNoDefault;
kungFuDeathGrip->DispatchKeyboardEvent(eKeyUp, keyEvent, status);
aDoDefault = (status != nsEventStatus_eConsumeNoDefault);
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::GetModifierState(const nsAString& aModifierKeyName,
bool* aActive) {
MOZ_RELEASE_ASSERT(aActive, "aActive must not be null");
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
Modifiers modifier = WidgetInputEvent::GetModifier(aModifierKeyName);
*aActive = ((GetActiveModifiers() & modifier) != 0);
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::ShareModifierStateOf(nsITextInputProcessor* aOther) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
if (!aOther) {
mModifierKeyDataArray = nullptr;
return NS_OK;
}
TextInputProcessor* other = static_cast<TextInputProcessor*>(aOther);
if (!other->mModifierKeyDataArray) {
other->mModifierKeyDataArray = new ModifierKeyDataArray();
}
mModifierKeyDataArray = other->mModifierKeyDataArray;
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::ComputeCodeValueOfNonPrintableKey(
const nsAString& aKeyValue, JS::Handle<JS::Value> aLocation,
uint8_t aOptionalArgc, nsAString& aCodeValue) {
aCodeValue.Truncate();
Maybe<uint32_t> location;
if (aOptionalArgc) {
if (aLocation.isNullOrUndefined()) {
// location should be nothing.
} else if (aLocation.isInt32()) {
location = mozilla::Some(static_cast<uint32_t>(aLocation.toInt32()));
} else {
NS_WARNING_ASSERTION(aLocation.isNullOrUndefined() || aLocation.isInt32(),
"aLocation must be undefined, null or int");
return NS_ERROR_INVALID_ARG;
}
}
KeyNameIndex keyNameIndex = WidgetKeyboardEvent::GetKeyNameIndex(aKeyValue);
if (keyNameIndex == KEY_NAME_INDEX_Unidentified ||
keyNameIndex == KEY_NAME_INDEX_USE_STRING) {
return NS_OK;
}
CodeNameIndex codeNameIndex =
WidgetKeyboardEvent::ComputeCodeNameIndexFromKeyNameIndex(keyNameIndex,
location);
if (codeNameIndex == CODE_NAME_INDEX_UNKNOWN) {
return NS_OK;
}
MOZ_ASSERT(codeNameIndex != CODE_NAME_INDEX_USE_STRING);
WidgetKeyboardEvent::GetDOMCodeName(codeNameIndex, aCodeValue);
return NS_OK;
}
NS_IMETHODIMP
TextInputProcessor::GuessCodeValueOfPrintableKeyInUSEnglishKeyboardLayout(
const nsAString& aKeyValue, JS::Handle<JS::Value> aLocation,
uint8_t aOptionalArgc, nsAString& aCodeValue) {
aCodeValue.Truncate();
Maybe<uint32_t> location;
if (aOptionalArgc) {
if (aLocation.isNullOrUndefined()) {
// location should be nothing.
} else if (aLocation.isInt32()) {
location = mozilla::Some(static_cast<uint32_t>(aLocation.toInt32()));
} else {
NS_WARNING_ASSERTION(aLocation.isNullOrUndefined() || aLocation.isInt32(),
"aLocation must be undefined, null or int");
return NS_ERROR_INVALID_ARG;
}
}
CodeNameIndex codeNameIndex =
GuessCodeNameIndexOfPrintableKeyInUSEnglishLayout(aKeyValue, location);
if (codeNameIndex == CODE_NAME_INDEX_UNKNOWN) {
return NS_OK;
}
MOZ_ASSERT(codeNameIndex != CODE_NAME_INDEX_USE_STRING);
WidgetKeyboardEvent::GetDOMCodeName(codeNameIndex, aCodeValue);
return NS_OK;
}
// static
CodeNameIndex
TextInputProcessor::GuessCodeNameIndexOfPrintableKeyInUSEnglishLayout(
const nsAString& aKeyValue, const Maybe<uint32_t>& aLocation) {
if (aKeyValue.IsEmpty()) {
return CODE_NAME_INDEX_UNKNOWN;
}
// US keyboard layout can input only one character per key. So, we can
// assume that if the key value is 2 or more characters, it's a known
// key name or not a usual key emulation.
if (aKeyValue.Length() > 1) {
return CODE_NAME_INDEX_UNKNOWN;
}
if (aLocation.isSome() &&
aLocation.value() ==
dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_NUMPAD) {
switch (aKeyValue[0]) {
case '+':
return CODE_NAME_INDEX_NumpadAdd;
case '-':
return CODE_NAME_INDEX_NumpadSubtract;
case '*':
return CODE_NAME_INDEX_NumpadMultiply;
case '/':
return CODE_NAME_INDEX_NumpadDivide;
case '.':
return CODE_NAME_INDEX_NumpadDecimal;
case '0':
return CODE_NAME_INDEX_Numpad0;
case '1':
return CODE_NAME_INDEX_Numpad1;
case '2':
return CODE_NAME_INDEX_Numpad2;
case '3':
return CODE_NAME_INDEX_Numpad3;
case '4':
return CODE_NAME_INDEX_Numpad4;
case '5':
return CODE_NAME_INDEX_Numpad5;
case '6':
return CODE_NAME_INDEX_Numpad6;
case '7':
return CODE_NAME_INDEX_Numpad7;
case '8':
return CODE_NAME_INDEX_Numpad8;
case '9':
return CODE_NAME_INDEX_Numpad9;
default:
return CODE_NAME_INDEX_UNKNOWN;
}
}
if (aLocation.isSome() &&
aLocation.value() !=
dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_STANDARD) {
return CODE_NAME_INDEX_UNKNOWN;
}
// TODO: Support characters inputted with option key on macOS.
switch (aKeyValue[0]) {
case 'a':
case 'A':
return CODE_NAME_INDEX_KeyA;
case 'b':
case 'B':
return CODE_NAME_INDEX_KeyB;
case 'c':
case 'C':
return CODE_NAME_INDEX_KeyC;
case 'd':
case 'D':
return CODE_NAME_INDEX_KeyD;
case 'e':
case 'E':
return CODE_NAME_INDEX_KeyE;
case 'f':
case 'F':
return CODE_NAME_INDEX_KeyF;
case 'g':
case 'G':
return CODE_NAME_INDEX_KeyG;
case 'h':
case 'H':
return CODE_NAME_INDEX_KeyH;
case 'i':
case 'I':
return CODE_NAME_INDEX_KeyI;
case 'j':
case 'J':
return CODE_NAME_INDEX_KeyJ;
case 'k':
case 'K':
return CODE_NAME_INDEX_KeyK;
case 'l':
case 'L':
return CODE_NAME_INDEX_KeyL;
case 'm':
case 'M':
return CODE_NAME_INDEX_KeyM;
case 'n':
case 'N':
return CODE_NAME_INDEX_KeyN;
case 'o':
case 'O':
return CODE_NAME_INDEX_KeyO;
case 'p':
case 'P':
return CODE_NAME_INDEX_KeyP;
case 'q':
case 'Q':
return CODE_NAME_INDEX_KeyQ;
case 'r':
case 'R':
return CODE_NAME_INDEX_KeyR;
case 's':
case 'S':
return CODE_NAME_INDEX_KeyS;
case 't':
case 'T':
return CODE_NAME_INDEX_KeyT;
case 'u':
case 'U':
return CODE_NAME_INDEX_KeyU;
case 'v':
case 'V':
return CODE_NAME_INDEX_KeyV;
case 'w':
case 'W':
return CODE_NAME_INDEX_KeyW;
case 'x':
case 'X':
return CODE_NAME_INDEX_KeyX;
case 'y':
case 'Y':
return CODE_NAME_INDEX_KeyY;
case 'z':
case 'Z':
return CODE_NAME_INDEX_KeyZ;
case '`':
case '~':
return CODE_NAME_INDEX_Backquote;
case '1':
case '!':
return CODE_NAME_INDEX_Digit1;
case '2':
case '@':
return CODE_NAME_INDEX_Digit2;
case '3':
case '#':
return CODE_NAME_INDEX_Digit3;
case '4':
case '$':
return CODE_NAME_INDEX_Digit4;
case '5':
case '%':
return CODE_NAME_INDEX_Digit5;
case '6':
case '^':
return CODE_NAME_INDEX_Digit6;
case '7':
case '&':
return CODE_NAME_INDEX_Digit7;
case '8':
case '*':
return CODE_NAME_INDEX_Digit8;
case '9':
case '(':
return CODE_NAME_INDEX_Digit9;
case '0':
case ')':
return CODE_NAME_INDEX_Digit0;
case '-':
case '_':
return CODE_NAME_INDEX_Minus;
case '=':
case '+':
return CODE_NAME_INDEX_Equal;
case '[':
case '{':
return CODE_NAME_INDEX_BracketLeft;
case ']':
case '}':
return CODE_NAME_INDEX_BracketRight;
case '\\':
case '|':
return CODE_NAME_INDEX_Backslash;
case ';':
case ':':
return CODE_NAME_INDEX_Semicolon;
case '\'':
case '"':
return CODE_NAME_INDEX_Quote;
case ',':
case '<':
return CODE_NAME_INDEX_Comma;
case '.':
case '>':
return CODE_NAME_INDEX_Period;
case '/':
case '?':
return CODE_NAME_INDEX_Slash;
case ' ':
return CODE_NAME_INDEX_Space;
default:
return CODE_NAME_INDEX_UNKNOWN;
}
}
NS_IMETHODIMP
TextInputProcessor::GuessKeyCodeValueOfPrintableKeyInUSEnglishKeyboardLayout(
const nsAString& aKeyValue, JS::Handle<JS::Value> aLocation,
uint8_t aOptionalArgc, uint32_t* aKeyCodeValue) {
if (NS_WARN_IF(!aKeyCodeValue)) {
return NS_ERROR_INVALID_ARG;
}
Maybe<uint32_t> location;
if (aOptionalArgc) {
if (aLocation.isNullOrUndefined()) {
// location should be nothing.
} else if (aLocation.isInt32()) {
location = mozilla::Some(static_cast<uint32_t>(aLocation.toInt32()));
} else {
NS_WARNING_ASSERTION(aLocation.isNullOrUndefined() || aLocation.isInt32(),
"aLocation must be undefined, null or int");
return NS_ERROR_INVALID_ARG;
}
}
*aKeyCodeValue =
GuessKeyCodeOfPrintableKeyInUSEnglishLayout(aKeyValue, location);
return NS_OK;
}
// static
uint32_t TextInputProcessor::GuessKeyCodeOfPrintableKeyInUSEnglishLayout(
const nsAString& aKeyValue, const Maybe<uint32_t>& aLocation) {
if (aKeyValue.IsEmpty()) {
return 0;
}
// US keyboard layout can input only one character per key. So, we can
// assume that if the key value is 2 or more characters, it's a known
// key name of a non-printable key or not a usual key emulation.
if (aKeyValue.Length() > 1) {
return 0;
}
if (aLocation.isSome() &&
aLocation.value() ==
dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_NUMPAD) {
switch (aKeyValue[0]) {
case '+':
return dom::KeyboardEvent_Binding::DOM_VK_ADD;
case '-':
return dom::KeyboardEvent_Binding::DOM_VK_SUBTRACT;
case '*':
return dom::KeyboardEvent_Binding::DOM_VK_MULTIPLY;
case '/':
return dom::KeyboardEvent_Binding::DOM_VK_DIVIDE;
case '.':
return dom::KeyboardEvent_Binding::DOM_VK_DECIMAL;
case '0':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD0;
case '1':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD1;
case '2':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD2;
case '3':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD3;
case '4':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD4;
case '5':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD5;
case '6':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD6;
case '7':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD7;
case '8':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD8;
case '9':
return dom::KeyboardEvent_Binding::DOM_VK_NUMPAD9;
default:
return 0;
}
}
if (aLocation.isSome() &&
aLocation.value() !=
dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_STANDARD) {
return 0;
}
// TODO: Support characters inputted with option key on macOS.
switch (aKeyValue[0]) {
case 'a':
case 'A':
return dom::KeyboardEvent_Binding::DOM_VK_A;
case 'b':
case 'B':
return dom::KeyboardEvent_Binding::DOM_VK_B;
case 'c':
case 'C':
return dom::KeyboardEvent_Binding::DOM_VK_C;
case 'd':
case 'D':
return dom::KeyboardEvent_Binding::DOM_VK_D;
case 'e':
case 'E':
return dom::KeyboardEvent_Binding::DOM_VK_E;
case 'f':
case 'F':
return dom::KeyboardEvent_Binding::DOM_VK_F;
case 'g':
case 'G':
return dom::KeyboardEvent_Binding::DOM_VK_G;
case 'h':
case 'H':
return dom::KeyboardEvent_Binding::DOM_VK_H;
case 'i':
case 'I':
return dom::KeyboardEvent_Binding::DOM_VK_I;
case 'j':
case 'J':
return dom::KeyboardEvent_Binding::DOM_VK_J;
case 'k':
case 'K':
return dom::KeyboardEvent_Binding::DOM_VK_K;
case 'l':
case 'L':
return dom::KeyboardEvent_Binding::DOM_VK_L;
case 'm':
case 'M':
return dom::KeyboardEvent_Binding::DOM_VK_M;
case 'n':
case 'N':
return dom::KeyboardEvent_Binding::DOM_VK_N;
case 'o':
case 'O':
return dom::KeyboardEvent_Binding::DOM_VK_O;
case 'p':
case 'P':
return dom::KeyboardEvent_Binding::DOM_VK_P;
case 'q':
case 'Q':
return dom::KeyboardEvent_Binding::DOM_VK_Q;
case 'r':
case 'R':
return dom::KeyboardEvent_Binding::DOM_VK_R;
case 's':
case 'S':
return dom::KeyboardEvent_Binding::DOM_VK_S;
case 't':
case 'T':
return dom::KeyboardEvent_Binding::DOM_VK_T;
case 'u':
case 'U':
return dom::KeyboardEvent_Binding::DOM_VK_U;
case 'v':
case 'V':
return dom::KeyboardEvent_Binding::DOM_VK_V;
case 'w':
case 'W':
return dom::KeyboardEvent_Binding::DOM_VK_W;
case 'x':
case 'X':
return dom::KeyboardEvent_Binding::DOM_VK_X;
case 'y':
case 'Y':
return dom::KeyboardEvent_Binding::DOM_VK_Y;
case 'z':
case 'Z':
return dom::KeyboardEvent_Binding::DOM_VK_Z;
case '`':
case '~':
return dom::KeyboardEvent_Binding::DOM_VK_BACK_QUOTE;
case '1':
case '!':
return dom::KeyboardEvent_Binding::DOM_VK_1;
case '2':
case '@':
return dom::KeyboardEvent_Binding::DOM_VK_2;
case '3':
case '#':
return dom::KeyboardEvent_Binding::DOM_VK_3;
case '4':
case '$':
return dom::KeyboardEvent_Binding::DOM_VK_4;
case '5':
case '%':
return dom::KeyboardEvent_Binding::DOM_VK_5;
case '6':
case '^':
return dom::KeyboardEvent_Binding::DOM_VK_6;
case '7':
case '&':
return dom::KeyboardEvent_Binding::DOM_VK_7;
case '8':
case '*':
return dom::KeyboardEvent_Binding::DOM_VK_8;
case '9':
case '(':
return dom::KeyboardEvent_Binding::DOM_VK_9;
case '0':
case ')':
return dom::KeyboardEvent_Binding::DOM_VK_0;
case '-':
case '_':
return dom::KeyboardEvent_Binding::DOM_VK_HYPHEN_MINUS;
case '=':
case '+':
return dom::KeyboardEvent_Binding::DOM_VK_EQUALS;
case '[':
case '{':
return dom::KeyboardEvent_Binding::DOM_VK_OPEN_BRACKET;
case ']':
case '}':
return dom::KeyboardEvent_Binding::DOM_VK_CLOSE_BRACKET;
case '\\':
case '|':
return dom::KeyboardEvent_Binding::DOM_VK_BACK_SLASH;
case ';':
case ':':
return dom::KeyboardEvent_Binding::DOM_VK_SEMICOLON;
case '\'':
case '"':
return dom::KeyboardEvent_Binding::DOM_VK_QUOTE;
case ',':
case '<':
return dom::KeyboardEvent_Binding::DOM_VK_COMMA;
case '.':
case '>':
return dom::KeyboardEvent_Binding::DOM_VK_PERIOD;
case '/':
case '?':
return dom::KeyboardEvent_Binding::DOM_VK_SLASH;
case ' ':
return dom::KeyboardEvent_Binding::DOM_VK_SPACE;
default:
return 0;
}
}
/******************************************************************************
* TextInputProcessor::AutoPendingCompositionResetter
******************************************************************************/
TextInputProcessor::AutoPendingCompositionResetter::
AutoPendingCompositionResetter(TextInputProcessor* aTIP)
: mTIP(aTIP) {
MOZ_RELEASE_ASSERT(mTIP.get(), "mTIP must not be null");
}
TextInputProcessor::AutoPendingCompositionResetter::
~AutoPendingCompositionResetter() {
if (mTIP->mDispatcher) {
mTIP->mDispatcher->ClearPendingComposition();
}
}
/******************************************************************************
* TextInputProcessor::ModifierKeyData
******************************************************************************/
TextInputProcessor::ModifierKeyData::ModifierKeyData(
const WidgetKeyboardEvent& aKeyboardEvent)
: mKeyNameIndex(aKeyboardEvent.mKeyNameIndex),
mCodeNameIndex(aKeyboardEvent.mCodeNameIndex) {
mModifier = WidgetKeyboardEvent::GetModifierForKeyName(mKeyNameIndex);
MOZ_ASSERT(mModifier, "mKeyNameIndex must be a modifier key name");
}
/******************************************************************************
* TextInputProcessor::ModifierKeyDataArray
******************************************************************************/
Modifiers TextInputProcessor::ModifierKeyDataArray::GetActiveModifiers() const {
Modifiers result = MODIFIER_NONE;
for (uint32_t i = 0; i < Length(); i++) {
result |= ElementAt(i).mModifier;
}
return result;
}
void TextInputProcessor::ModifierKeyDataArray::ActivateModifierKey(
const TextInputProcessor::ModifierKeyData& aModifierKeyData) {
if (Contains(aModifierKeyData)) {
return;
}
AppendElement(aModifierKeyData);
}
void TextInputProcessor::ModifierKeyDataArray::InactivateModifierKey(
const TextInputProcessor::ModifierKeyData& aModifierKeyData) {
RemoveElement(aModifierKeyData);
}
void TextInputProcessor::ModifierKeyDataArray::ToggleModifierKey(
const TextInputProcessor::ModifierKeyData& aModifierKeyData) {
auto index = IndexOf(aModifierKeyData);
if (index == NoIndex) {
AppendElement(aModifierKeyData);
return;
}
RemoveElementAt(index);
}
} // namespace mozilla
