зеркало из https://github.com/mozilla/gecko-dev.git
778 строки
25 KiB
C++
778 строки
25 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "mozilla/Preferences.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TextEventDispatcher.h"
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#include "nsIDocShell.h"
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#include "nsIFrame.h"
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#include "nsIPresShell.h"
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#include "nsIWidget.h"
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#include "nsPIDOMWindow.h"
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#include "nsView.h"
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namespace mozilla {
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namespace widget {
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/******************************************************************************
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* TextEventDispatcher
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*****************************************************************************/
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bool TextEventDispatcher::sDispatchKeyEventsDuringComposition = false;
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TextEventDispatcher::TextEventDispatcher(nsIWidget* aWidget)
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: mWidget(aWidget)
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, mDispatchingEvent(0)
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, mInputTransactionType(eNoInputTransaction)
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, mIsComposing(false)
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{
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MOZ_RELEASE_ASSERT(mWidget, "aWidget must not be nullptr");
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static bool sInitialized = false;
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if (!sInitialized) {
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Preferences::AddBoolVarCache(
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&sDispatchKeyEventsDuringComposition,
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"dom.keyboardevent.dispatch_during_composition",
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false);
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sInitialized = true;
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}
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}
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nsresult
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TextEventDispatcher::BeginInputTransaction(
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TextEventDispatcherListener* aListener)
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{
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return BeginInputTransactionInternal(aListener,
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eSameProcessSyncInputTransaction);
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}
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nsresult
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TextEventDispatcher::BeginTestInputTransaction(
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TextEventDispatcherListener* aListener,
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bool aIsAPZAware)
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{
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return BeginInputTransactionInternal(aListener,
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aIsAPZAware ? eAsyncTestInputTransaction :
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eSameProcessSyncTestInputTransaction);
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}
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nsresult
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TextEventDispatcher::BeginNativeInputTransaction()
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{
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if (NS_WARN_IF(!mWidget)) {
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return NS_ERROR_FAILURE;
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}
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RefPtr<TextEventDispatcherListener> listener =
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mWidget->GetNativeTextEventDispatcherListener();
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if (NS_WARN_IF(!listener)) {
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return NS_ERROR_FAILURE;
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}
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return BeginInputTransactionInternal(listener, eNativeInputTransaction);
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}
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nsresult
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TextEventDispatcher::BeginInputTransactionInternal(
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TextEventDispatcherListener* aListener,
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InputTransactionType aType)
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{
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if (NS_WARN_IF(!aListener)) {
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return NS_ERROR_INVALID_ARG;
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}
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nsCOMPtr<TextEventDispatcherListener> listener = do_QueryReferent(mListener);
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if (listener) {
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if (listener == aListener && mInputTransactionType == aType) {
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return NS_OK;
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}
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// If this has composition or is dispatching an event, any other listener
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// can steal ownership. Especially, if the latter case is allowed,
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// nobody cannot begin input transaction with this if a modal dialog is
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// opened during dispatching an event.
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if (IsComposing() || IsDispatchingEvent()) {
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return NS_ERROR_ALREADY_INITIALIZED;
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}
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}
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mListener = do_GetWeakReference(aListener);
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mInputTransactionType = aType;
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if (listener && listener != aListener) {
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listener->OnRemovedFrom(this);
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}
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return NS_OK;
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}
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void
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TextEventDispatcher::EndInputTransaction(TextEventDispatcherListener* aListener)
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{
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if (NS_WARN_IF(IsComposing()) || NS_WARN_IF(IsDispatchingEvent())) {
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return;
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}
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mInputTransactionType = eNoInputTransaction;
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nsCOMPtr<TextEventDispatcherListener> listener = do_QueryReferent(mListener);
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if (NS_WARN_IF(!listener)) {
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return;
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}
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if (NS_WARN_IF(listener != aListener)) {
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return;
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}
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mListener = nullptr;
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listener->OnRemovedFrom(this);
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}
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void
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TextEventDispatcher::OnDestroyWidget()
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{
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mWidget = nullptr;
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mPendingComposition.Clear();
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nsCOMPtr<TextEventDispatcherListener> listener = do_QueryReferent(mListener);
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mListener = nullptr;
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mInputTransactionType = eNoInputTransaction;
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if (listener) {
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listener->OnRemovedFrom(this);
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}
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}
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nsresult
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TextEventDispatcher::GetState() const
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{
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nsCOMPtr<TextEventDispatcherListener> listener = do_QueryReferent(mListener);
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if (!listener) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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if (!mWidget || mWidget->Destroyed()) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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return NS_OK;
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}
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void
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TextEventDispatcher::InitEvent(WidgetGUIEvent& aEvent) const
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{
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aEvent.mTime = PR_IntervalNow();
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aEvent.mRefPoint = LayoutDeviceIntPoint(0, 0);
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aEvent.mFlags.mIsSynthesizedForTests = IsForTests();
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if (aEvent.mClass != eCompositionEventClass) {
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return;
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}
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void* pseudoIMEContext = GetPseudoIMEContext();
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if (pseudoIMEContext) {
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aEvent.AsCompositionEvent()->mNativeIMEContext.
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InitWithRawNativeIMEContext(pseudoIMEContext);
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}
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#ifdef DEBUG
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else {
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MOZ_ASSERT(!XRE_IsContentProcess(),
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"Why did the content process start native event transaction?");
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MOZ_ASSERT(aEvent.AsCompositionEvent()->mNativeIMEContext.IsValid(),
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"Native IME context shouldn't be invalid");
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}
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#endif // #ifdef DEBUG
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}
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nsresult
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TextEventDispatcher::DispatchEvent(nsIWidget* aWidget,
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WidgetGUIEvent& aEvent,
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nsEventStatus& aStatus)
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{
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MOZ_ASSERT(!aEvent.AsInputEvent(), "Use DispatchInputEvent()");
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RefPtr<TextEventDispatcher> kungFuDeathGrip(this);
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nsCOMPtr<nsIWidget> widget(aWidget);
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mDispatchingEvent++;
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nsresult rv = widget->DispatchEvent(&aEvent, aStatus);
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mDispatchingEvent--;
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return rv;
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}
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nsresult
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TextEventDispatcher::DispatchInputEvent(nsIWidget* aWidget,
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WidgetInputEvent& aEvent,
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nsEventStatus& aStatus)
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{
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RefPtr<TextEventDispatcher> kungFuDeathGrip(this);
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nsCOMPtr<nsIWidget> widget(aWidget);
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mDispatchingEvent++;
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// If the event is dispatched via nsIWidget::DispatchInputEvent(), it
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// sends the event to the parent process first since APZ needs to handle it
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// first. However, some callers (e.g., keyboard apps on B2G and tests
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// expecting synchronous dispatch) don't want this to do that.
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nsresult rv = NS_OK;
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if (ShouldSendInputEventToAPZ()) {
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aStatus = widget->DispatchInputEvent(&aEvent);
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} else {
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rv = widget->DispatchEvent(&aEvent, aStatus);
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}
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mDispatchingEvent--;
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return rv;
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}
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nsresult
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TextEventDispatcher::StartComposition(nsEventStatus& aStatus,
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const WidgetEventTime* aEventTime)
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{
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aStatus = nsEventStatus_eIgnore;
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nsresult rv = GetState();
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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if (NS_WARN_IF(mIsComposing)) {
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return NS_ERROR_FAILURE;
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}
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mIsComposing = true;
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WidgetCompositionEvent compositionStartEvent(true, eCompositionStart,
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mWidget);
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InitEvent(compositionStartEvent);
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if (aEventTime) {
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compositionStartEvent.AssignEventTime(*aEventTime);
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}
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rv = DispatchEvent(mWidget, compositionStartEvent, aStatus);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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return NS_OK;
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}
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nsresult
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TextEventDispatcher::StartCompositionAutomaticallyIfNecessary(
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nsEventStatus& aStatus,
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const WidgetEventTime* aEventTime)
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{
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if (IsComposing()) {
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return NS_OK;
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}
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nsresult rv = StartComposition(aStatus, aEventTime);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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// If started composition has already been committed, we shouldn't dispatch
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// the compositionchange event.
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if (!IsComposing()) {
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aStatus = nsEventStatus_eConsumeNoDefault;
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return NS_OK;
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}
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// Note that the widget might be destroyed during a call of
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// StartComposition(). In such case, we shouldn't keep dispatching next
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// event.
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rv = GetState();
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if (NS_FAILED(rv)) {
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MOZ_ASSERT(rv != NS_ERROR_NOT_INITIALIZED,
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"aDispatcher must still be initialized in this case");
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aStatus = nsEventStatus_eConsumeNoDefault;
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return NS_OK; // Don't throw exception in this case
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}
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aStatus = nsEventStatus_eIgnore;
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return NS_OK;
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}
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nsresult
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TextEventDispatcher::CommitComposition(nsEventStatus& aStatus,
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const nsAString* aCommitString,
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const WidgetEventTime* aEventTime)
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{
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aStatus = nsEventStatus_eIgnore;
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nsresult rv = GetState();
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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// When there is no composition, caller shouldn't try to commit composition
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// with non-existing composition string nor commit composition with empty
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// string.
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if (NS_WARN_IF(!IsComposing() &&
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(!aCommitString || aCommitString->IsEmpty()))) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIWidget> widget(mWidget);
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rv = StartCompositionAutomaticallyIfNecessary(aStatus, aEventTime);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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if (aStatus == nsEventStatus_eConsumeNoDefault) {
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return NS_OK;
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}
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// End current composition and make this free for other IMEs.
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mIsComposing = false;
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EventMessage message = aCommitString ? eCompositionCommit :
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eCompositionCommitAsIs;
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WidgetCompositionEvent compositionCommitEvent(true, message, widget);
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InitEvent(compositionCommitEvent);
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if (aEventTime) {
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compositionCommitEvent.AssignEventTime(*aEventTime);
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}
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if (message == eCompositionCommit) {
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compositionCommitEvent.mData = *aCommitString;
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// Don't send CRLF, replace it with LF here.
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compositionCommitEvent.mData.ReplaceSubstring(NS_LITERAL_STRING("\r\n"),
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NS_LITERAL_STRING("\n"));
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}
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rv = DispatchEvent(widget, compositionCommitEvent, aStatus);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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return NS_OK;
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}
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nsresult
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TextEventDispatcher::NotifyIME(const IMENotification& aIMENotification)
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{
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nsresult rv = NS_ERROR_NOT_IMPLEMENTED;
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// First, send the notification to current input transaction's listener.
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nsCOMPtr<TextEventDispatcherListener> listener = do_QueryReferent(mListener);
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if (listener) {
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rv = listener->NotifyIME(this, aIMENotification);
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}
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if (mInputTransactionType == eNativeInputTransaction || !mWidget) {
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return rv;
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}
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// If current input transaction isn't for native event handler, we should
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// send the notification to the native text event dispatcher listener
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// since native event handler may need to do something from
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// TextEventDispatcherListener::NotifyIME() even before there is no
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// input transaction yet. For example, native IME handler may need to
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// create new context at receiving NOTIFY_IME_OF_FOCUS. In this case,
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// mListener may not be initialized since input transaction should be
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// initialized immediately before dispatching every WidgetKeyboardEvent
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// and WidgetCompositionEvent (dispatching events always occurs after
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// focus move).
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nsCOMPtr<TextEventDispatcherListener> nativeListener =
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mWidget->GetNativeTextEventDispatcherListener();
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if (!nativeListener) {
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return rv;
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}
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switch (aIMENotification.mMessage) {
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case REQUEST_TO_COMMIT_COMPOSITION:
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case REQUEST_TO_CANCEL_COMPOSITION:
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// It's not necessary to notify native IME of requests.
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return rv;
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default: {
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// Even if current input transaction's listener returns NS_OK or
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// something, we need to notify native IME of notifications because
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// when user typing after TIP does something, the changed information
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// is necessary for them.
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nsresult rv2 =
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nativeListener->NotifyIME(this, aIMENotification);
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// But return the result from current listener except when the
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// notification isn't handled.
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return rv == NS_ERROR_NOT_IMPLEMENTED ? rv2 : rv;
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}
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}
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}
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bool
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TextEventDispatcher::DispatchKeyboardEvent(
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EventMessage aMessage,
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const WidgetKeyboardEvent& aKeyboardEvent,
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nsEventStatus& aStatus,
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void* aData)
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{
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return DispatchKeyboardEventInternal(aMessage, aKeyboardEvent, aStatus,
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aData);
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}
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bool
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TextEventDispatcher::DispatchKeyboardEventInternal(
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EventMessage aMessage,
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const WidgetKeyboardEvent& aKeyboardEvent,
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nsEventStatus& aStatus,
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void* aData,
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uint32_t aIndexOfKeypress)
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{
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// Note that this method is also used for dispatching key events on a plugin
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// because key events on a plugin should be dispatched same as normal key
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// events. Then, only some handlers which need to intercept key events
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// before the focused plugin (e.g., reserved shortcut key handlers) can
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// consume the events.
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MOZ_ASSERT(WidgetKeyboardEvent::IsKeyDownOrKeyDownOnPlugin(aMessage) ||
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WidgetKeyboardEvent::IsKeyUpOrKeyUpOnPlugin(aMessage) ||
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aMessage == eKeyPress, "Invalid aMessage value");
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nsresult rv = GetState();
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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// If the key shouldn't cause keypress events, don't this patch them.
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if (aMessage == eKeyPress && !aKeyboardEvent.ShouldCauseKeypressEvents()) {
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return false;
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}
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// Basically, key events shouldn't be dispatched during composition.
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// Note that plugin process has different IME context. Therefore, we don't
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// need to check our composition state when the key event is fired on a
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// plugin.
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if (IsComposing() && !WidgetKeyboardEvent::IsKeyEventOnPlugin(aMessage)) {
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// However, if we need to behave like other browsers, we need the keydown
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// and keyup events. Note that this behavior is also allowed by D3E spec.
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// FYI: keypress events must not be fired during composition.
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if (!sDispatchKeyEventsDuringComposition || aMessage == eKeyPress) {
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return false;
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}
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// XXX If there was mOnlyContentDispatch for this case, it might be useful
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// because our chrome doesn't assume that key events are fired during
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// composition.
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}
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WidgetKeyboardEvent keyEvent(true, aMessage, mWidget);
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InitEvent(keyEvent);
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keyEvent.AssignKeyEventData(aKeyboardEvent, false);
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if (aStatus == nsEventStatus_eConsumeNoDefault) {
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// If the key event should be dispatched as consumed event, marking it here.
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// This is useful to prevent double action. E.g., when the key was already
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// handled by system, our chrome shouldn't handle it.
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keyEvent.PreventDefaultBeforeDispatch();
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}
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// Corrects each member for the specific key event type.
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if (keyEvent.mKeyNameIndex != KEY_NAME_INDEX_USE_STRING) {
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MOZ_ASSERT(!aIndexOfKeypress,
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"aIndexOfKeypress must be 0 for non-printable key");
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// If the keyboard event isn't caused by printable key, its charCode should
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// be 0.
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keyEvent.SetCharCode(0);
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} else {
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if (WidgetKeyboardEvent::IsKeyDownOrKeyDownOnPlugin(aMessage) ||
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WidgetKeyboardEvent::IsKeyUpOrKeyUpOnPlugin(aMessage)) {
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MOZ_RELEASE_ASSERT(!aIndexOfKeypress,
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"aIndexOfKeypress must be 0 for either eKeyDown or eKeyUp");
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} else {
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MOZ_RELEASE_ASSERT(
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!aIndexOfKeypress || aIndexOfKeypress < keyEvent.mKeyValue.Length(),
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"aIndexOfKeypress must be 0 - mKeyValue.Length() - 1");
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}
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wchar_t ch =
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keyEvent.mKeyValue.IsEmpty() ? 0 : keyEvent.mKeyValue[aIndexOfKeypress];
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keyEvent.SetCharCode(static_cast<uint32_t>(ch));
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if (aMessage == eKeyPress) {
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// keyCode of eKeyPress events of printable keys should be always 0.
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keyEvent.keyCode = 0;
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// eKeyPress events are dispatched for every character.
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// So, each key value of eKeyPress events should be a character.
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if (ch) {
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keyEvent.mKeyValue.Assign(ch);
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} else {
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keyEvent.mKeyValue.Truncate();
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}
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}
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}
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if (WidgetKeyboardEvent::IsKeyUpOrKeyUpOnPlugin(aMessage)) {
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// mIsRepeat of keyup event must be false.
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keyEvent.mIsRepeat = false;
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}
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// mIsComposing should be initialized later.
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keyEvent.mIsComposing = false;
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if (mInputTransactionType == eNativeInputTransaction) {
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// Copy mNativeKeyEvent here because for safety for other users of
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// AssignKeyEventData(), it doesn't copy this.
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keyEvent.mNativeKeyEvent = aKeyboardEvent.mNativeKeyEvent;
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} else {
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// If it's not a keyboard event for native key event, we should ensure that
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// mNativeKeyEvent and mPluginEvent are null/empty.
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keyEvent.mNativeKeyEvent = nullptr;
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keyEvent.mPluginEvent.Clear();
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}
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// TODO: Manage mUniqueId here.
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// Request the alternative char codes for the key event.
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// eKeyDown also needs alternative char codes because nsXBLWindowKeyHandler
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// needs to check if a following keypress event is reserved by chrome for
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// stopping propagation of its preceding keydown event.
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keyEvent.alternativeCharCodes.Clear();
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if ((WidgetKeyboardEvent::IsKeyDownOrKeyDownOnPlugin(aMessage) ||
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aMessage == eKeyPress) &&
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(keyEvent.IsControl() || keyEvent.IsAlt() ||
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keyEvent.IsMeta() || keyEvent.IsOS())) {
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nsCOMPtr<TextEventDispatcherListener> listener =
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do_QueryReferent(mListener);
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if (listener) {
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DebugOnly<WidgetKeyboardEvent> original(keyEvent);
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listener->WillDispatchKeyboardEvent(this, keyEvent, aIndexOfKeypress,
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aData);
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MOZ_ASSERT(keyEvent.mMessage ==
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static_cast<WidgetKeyboardEvent&>(original).mMessage);
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MOZ_ASSERT(keyEvent.keyCode ==
|
|
static_cast<WidgetKeyboardEvent&>(original).keyCode);
|
|
MOZ_ASSERT(keyEvent.location ==
|
|
static_cast<WidgetKeyboardEvent&>(original).location);
|
|
MOZ_ASSERT(keyEvent.mIsRepeat ==
|
|
static_cast<WidgetKeyboardEvent&>(original).mIsRepeat);
|
|
MOZ_ASSERT(keyEvent.mIsComposing ==
|
|
static_cast<WidgetKeyboardEvent&>(original).mIsComposing);
|
|
MOZ_ASSERT(keyEvent.mKeyNameIndex ==
|
|
static_cast<WidgetKeyboardEvent&>(original).mKeyNameIndex);
|
|
MOZ_ASSERT(keyEvent.mCodeNameIndex ==
|
|
static_cast<WidgetKeyboardEvent&>(original).mCodeNameIndex);
|
|
MOZ_ASSERT(keyEvent.mKeyValue ==
|
|
static_cast<WidgetKeyboardEvent&>(original).mKeyValue);
|
|
MOZ_ASSERT(keyEvent.mCodeValue ==
|
|
static_cast<WidgetKeyboardEvent&>(original).mCodeValue);
|
|
}
|
|
}
|
|
|
|
DispatchInputEvent(mWidget, keyEvent, aStatus);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
TextEventDispatcher::MaybeDispatchKeypressEvents(
|
|
const WidgetKeyboardEvent& aKeyboardEvent,
|
|
nsEventStatus& aStatus,
|
|
void* aData)
|
|
{
|
|
// If the key event was consumed, keypress event shouldn't be fired.
|
|
if (aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
return false;
|
|
}
|
|
|
|
// If the key shouldn't cause keypress events, don't fire them.
|
|
if (!aKeyboardEvent.ShouldCauseKeypressEvents()) {
|
|
return false;
|
|
}
|
|
|
|
// If the key isn't a printable key or just inputting one character or
|
|
// no character, we should dispatch only one keypress. Otherwise, i.e.,
|
|
// if the key is a printable key and inputs multiple characters, keypress
|
|
// event should be dispatched the count of inputting characters times.
|
|
size_t keypressCount =
|
|
aKeyboardEvent.mKeyNameIndex != KEY_NAME_INDEX_USE_STRING ?
|
|
1 : std::max(static_cast<nsAString::size_type>(1),
|
|
aKeyboardEvent.mKeyValue.Length());
|
|
bool isDispatched = false;
|
|
bool consumed = false;
|
|
for (size_t i = 0; i < keypressCount; i++) {
|
|
aStatus = nsEventStatus_eIgnore;
|
|
if (!DispatchKeyboardEventInternal(eKeyPress, aKeyboardEvent,
|
|
aStatus, aData, i)) {
|
|
// The widget must have been gone.
|
|
break;
|
|
}
|
|
isDispatched = true;
|
|
if (!consumed) {
|
|
consumed = (aStatus == nsEventStatus_eConsumeNoDefault);
|
|
}
|
|
}
|
|
|
|
// If one of the keypress event was consumed, return ConsumeNoDefault.
|
|
if (consumed) {
|
|
aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
|
|
return isDispatched;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* TextEventDispatcher::PendingComposition
|
|
*****************************************************************************/
|
|
|
|
TextEventDispatcher::PendingComposition::PendingComposition()
|
|
{
|
|
Clear();
|
|
}
|
|
|
|
void
|
|
TextEventDispatcher::PendingComposition::Clear()
|
|
{
|
|
mString.Truncate();
|
|
mClauses = nullptr;
|
|
mCaret.mRangeType = 0;
|
|
}
|
|
|
|
void
|
|
TextEventDispatcher::PendingComposition::EnsureClauseArray()
|
|
{
|
|
if (mClauses) {
|
|
return;
|
|
}
|
|
mClauses = new TextRangeArray();
|
|
}
|
|
|
|
nsresult
|
|
TextEventDispatcher::PendingComposition::SetString(const nsAString& aString)
|
|
{
|
|
mString = aString;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEventDispatcher::PendingComposition::AppendClause(uint32_t aLength,
|
|
uint32_t aAttribute)
|
|
{
|
|
if (NS_WARN_IF(!aLength)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
switch (aAttribute) {
|
|
case NS_TEXTRANGE_RAWINPUT:
|
|
case NS_TEXTRANGE_SELECTEDRAWTEXT:
|
|
case NS_TEXTRANGE_CONVERTEDTEXT:
|
|
case NS_TEXTRANGE_SELECTEDCONVERTEDTEXT: {
|
|
EnsureClauseArray();
|
|
TextRange textRange;
|
|
textRange.mStartOffset =
|
|
mClauses->IsEmpty() ? 0 : mClauses->LastElement().mEndOffset;
|
|
textRange.mEndOffset = textRange.mStartOffset + aLength;
|
|
textRange.mRangeType = aAttribute;
|
|
mClauses->AppendElement(textRange);
|
|
return NS_OK;
|
|
}
|
|
default:
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
TextEventDispatcher::PendingComposition::SetCaret(uint32_t aOffset,
|
|
uint32_t aLength)
|
|
{
|
|
mCaret.mStartOffset = aOffset;
|
|
mCaret.mEndOffset = mCaret.mStartOffset + aLength;
|
|
mCaret.mRangeType = NS_TEXTRANGE_CARETPOSITION;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEventDispatcher::PendingComposition::Set(const nsAString& aString,
|
|
const TextRangeArray* aRanges)
|
|
{
|
|
Clear();
|
|
|
|
nsAutoString str(aString);
|
|
// Don't expose CRLF to web contents, instead, use LF.
|
|
str.ReplaceSubstring(NS_LITERAL_STRING("\r\n"), NS_LITERAL_STRING("\n"));
|
|
nsresult rv = SetString(str);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
if (!aRanges || aRanges->IsEmpty()) {
|
|
// Create dummy range if aString isn't empty.
|
|
if (!aString.IsEmpty()) {
|
|
rv = AppendClause(str.Length(), NS_TEXTRANGE_RAWINPUT);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Adjust offsets in the ranges for XP linefeed character (only \n).
|
|
// XXX Following code is the safest approach. However, it wastes performance.
|
|
// For ensuring the clauses do not overlap each other, we should redesign
|
|
// TextRange later.
|
|
for (uint32_t i = 0; i < aRanges->Length(); ++i) {
|
|
TextRange range = aRanges->ElementAt(i);
|
|
TextRange nativeRange = range;
|
|
if (nativeRange.mStartOffset > 0) {
|
|
nsAutoString preText(Substring(aString, 0, nativeRange.mStartOffset));
|
|
preText.ReplaceSubstring(NS_LITERAL_STRING("\r\n"),
|
|
NS_LITERAL_STRING("\n"));
|
|
range.mStartOffset = preText.Length();
|
|
}
|
|
if (nativeRange.Length() == 0) {
|
|
range.mEndOffset = range.mStartOffset;
|
|
} else {
|
|
nsAutoString clause(
|
|
Substring(aString, nativeRange.mStartOffset, nativeRange.Length()));
|
|
clause.ReplaceSubstring(NS_LITERAL_STRING("\r\n"),
|
|
NS_LITERAL_STRING("\n"));
|
|
range.mEndOffset = range.mStartOffset + clause.Length();
|
|
}
|
|
if (range.mRangeType == NS_TEXTRANGE_CARETPOSITION) {
|
|
mCaret = range;
|
|
} else {
|
|
EnsureClauseArray();
|
|
mClauses->AppendElement(range);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEventDispatcher::PendingComposition::Flush(
|
|
TextEventDispatcher* aDispatcher,
|
|
nsEventStatus& aStatus,
|
|
const WidgetEventTime* aEventTime)
|
|
{
|
|
aStatus = nsEventStatus_eIgnore;
|
|
|
|
nsresult rv = aDispatcher->GetState();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
if (mClauses && !mClauses->IsEmpty() &&
|
|
mClauses->LastElement().mEndOffset != mString.Length()) {
|
|
NS_WARNING("Sum of length of the all clauses must be same as the string "
|
|
"length");
|
|
Clear();
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
if (mCaret.mRangeType == NS_TEXTRANGE_CARETPOSITION) {
|
|
if (mCaret.mEndOffset > mString.Length()) {
|
|
NS_WARNING("Caret position is out of the composition string");
|
|
Clear();
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
EnsureClauseArray();
|
|
mClauses->AppendElement(mCaret);
|
|
}
|
|
|
|
RefPtr<TextEventDispatcher> kungFuDeathGrip(aDispatcher);
|
|
nsCOMPtr<nsIWidget> widget(aDispatcher->mWidget);
|
|
WidgetCompositionEvent compChangeEvent(true, eCompositionChange, widget);
|
|
aDispatcher->InitEvent(compChangeEvent);
|
|
if (aEventTime) {
|
|
compChangeEvent.AssignEventTime(*aEventTime);
|
|
}
|
|
compChangeEvent.mData = mString;
|
|
if (mClauses) {
|
|
MOZ_ASSERT(!mClauses->IsEmpty(),
|
|
"mClauses must be non-empty array when it's not nullptr");
|
|
compChangeEvent.mRanges = mClauses;
|
|
}
|
|
|
|
// While this method dispatches a composition event, some other event handler
|
|
// cause more clauses to be added. So, we should clear pending composition
|
|
// before dispatching the event.
|
|
Clear();
|
|
|
|
rv = aDispatcher->StartCompositionAutomaticallyIfNecessary(aStatus,
|
|
aEventTime);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
return NS_OK;
|
|
}
|
|
rv = aDispatcher->DispatchEvent(widget, compChangeEvent, aStatus);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace widget
|
|
} // namespace mozilla
|