mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
995 lines
31 KiB
C++
995 lines
31 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/EventForwards.h"
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#include "mozilla/TextEventDispatcher.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TextInputProcessor.h"
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#include "nsIDocShell.h"
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#include "nsIWidget.h"
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#include "nsPIDOMWindow.h"
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#include "nsPresContext.h"
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using namespace mozilla::widget;
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namespace mozilla {
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/******************************************************************************
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* TextInputProcessorNotification
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******************************************************************************/
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class TextInputProcessorNotification MOZ_FINAL :
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public nsITextInputProcessorNotification
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{
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public:
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explicit TextInputProcessorNotification(const char* aType)
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: mType(aType)
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{
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}
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NS_DECL_ISUPPORTS
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NS_IMETHOD GetType(nsACString& aType) MOZ_OVERRIDE MOZ_FINAL
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{
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aType = mType;
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return NS_OK;
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}
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protected:
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~TextInputProcessorNotification() { }
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private:
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nsAutoCString mType;
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TextInputProcessorNotification() { }
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};
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NS_IMPL_ISUPPORTS(TextInputProcessorNotification,
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nsITextInputProcessorNotification)
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/******************************************************************************
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* TextInputProcessor
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******************************************************************************/
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NS_IMPL_ISUPPORTS(TextInputProcessor,
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nsITextInputProcessor,
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TextEventDispatcherListener,
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nsISupportsWeakReference)
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TextInputProcessor::TextInputProcessor()
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: mDispatcher(nullptr)
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, mForTests(false)
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{
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}
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TextInputProcessor::~TextInputProcessor()
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{
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if (mDispatcher && mDispatcher->IsComposing()) {
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// If this is composing and not canceling the composition, nobody can steal
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// the rights of TextEventDispatcher from this instance. Therefore, this
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// needs to cancel the composition here.
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if (NS_SUCCEEDED(IsValidStateForComposition())) {
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nsRefPtr<TextEventDispatcher> kungFuDeathGrip(mDispatcher);
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nsEventStatus status = nsEventStatus_eIgnore;
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mDispatcher->CommitComposition(status, &EmptyString());
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}
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}
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}
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bool
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TextInputProcessor::IsComposing() const
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{
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return mDispatcher && mDispatcher->IsComposing();
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}
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NS_IMETHODIMP
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TextInputProcessor::GetHasComposition(bool* aHasComposition)
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{
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MOZ_RELEASE_ASSERT(aHasComposition, "aHasComposition must not be nullptr");
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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*aHasComposition = IsComposing();
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return NS_OK;
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}
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NS_IMETHODIMP
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TextInputProcessor::BeginInputTransaction(
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nsIDOMWindow* aWindow,
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nsITextInputProcessorCallback* aCallback,
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bool* aSucceeded)
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{
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MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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if (NS_WARN_IF(!aCallback)) {
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*aSucceeded = false;
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return NS_ERROR_INVALID_ARG;
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}
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return BeginInputTransactionInternal(aWindow, aCallback, false, *aSucceeded);
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}
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NS_IMETHODIMP
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TextInputProcessor::BeginInputTransactionForTests(
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nsIDOMWindow* aWindow,
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nsITextInputProcessorCallback* aCallback,
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uint8_t aOptionalArgc,
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bool* aSucceeded)
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{
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MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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nsITextInputProcessorCallback* callback =
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aOptionalArgc >= 1 ? aCallback : nullptr;
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return BeginInputTransactionInternal(aWindow, callback, true, *aSucceeded);
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}
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nsresult
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TextInputProcessor::BeginInputTransactionInternal(
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nsIDOMWindow* aWindow,
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nsITextInputProcessorCallback* aCallback,
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bool aForTests,
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bool& aSucceeded)
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{
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aSucceeded = false;
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if (NS_WARN_IF(!aWindow)) {
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return NS_ERROR_INVALID_ARG;
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}
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nsCOMPtr<nsPIDOMWindow> pWindow(do_QueryInterface(aWindow));
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if (NS_WARN_IF(!pWindow)) {
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return NS_ERROR_INVALID_ARG;
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}
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nsCOMPtr<nsIDocShell> docShell(pWindow->GetDocShell());
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if (NS_WARN_IF(!docShell)) {
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<nsPresContext> presContext;
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nsresult rv = docShell->GetPresContext(getter_AddRefs(presContext));
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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(!presContext)) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIWidget> widget = presContext->GetRootWidget();
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if (NS_WARN_IF(!widget)) {
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<TextEventDispatcher> dispatcher = widget->GetTextEventDispatcher();
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MOZ_RELEASE_ASSERT(dispatcher, "TextEventDispatcher must not be null");
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// If the instance was initialized and is being initialized for same
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// dispatcher and same purpose, we don't need to initialize the dispatcher
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// again.
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if (mDispatcher && dispatcher == mDispatcher && aCallback == mCallback &&
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aForTests == mForTests) {
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aSucceeded = true;
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return NS_OK;
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}
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// If this instance is composing or dispatching an event, don't allow to
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// initialize again. Especially, if we allow to begin input transaction with
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// another TextEventDispatcher during dispatching an event, it may cause that
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// nobody cannot begin input transaction with it if the last event causes
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// opening modal dialog.
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if (mDispatcher &&
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(mDispatcher->IsComposing() || mDispatcher->IsDispatchingEvent())) {
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return NS_ERROR_ALREADY_INITIALIZED;
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}
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// And also if another instance is composing with the new dispatcher or
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// dispatching an event, it'll fail to steal its ownership. Then, we should
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// not throw an exception, just return false.
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if (dispatcher->IsComposing() || dispatcher->IsDispatchingEvent()) {
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return NS_OK;
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}
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// This instance has finished preparing to link to the dispatcher. Therefore,
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// let's forget the old dispatcher and purpose.
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UnlinkFromTextEventDispatcher();
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if (aForTests) {
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rv = dispatcher->BeginInputTransactionForTests(this);
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} else {
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rv = dispatcher->BeginInputTransaction(this);
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}
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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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mDispatcher = dispatcher;
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mCallback = aCallback;
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mForTests = aForTests;
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aSucceeded = true;
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return NS_OK;
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}
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void
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TextInputProcessor::UnlinkFromTextEventDispatcher()
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{
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mDispatcher = nullptr;
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mForTests = false;
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if (mCallback) {
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nsCOMPtr<nsITextInputProcessorCallback> callback(mCallback);
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mCallback = nullptr;
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nsRefPtr<TextInputProcessorNotification> notification =
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new TextInputProcessorNotification("notify-end-input-transaction");
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bool result = false;
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callback->OnNotify(this, notification, &result);
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}
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}
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nsresult
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TextInputProcessor::IsValidStateForComposition()
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{
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if (NS_WARN_IF(!mDispatcher)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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nsresult rv = mDispatcher->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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return NS_OK;
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}
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bool
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TextInputProcessor::IsValidEventTypeForComposition(
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const WidgetKeyboardEvent& aKeyboardEvent) const
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{
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// The key event type of composition methods must be "" or "keydown".
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if (aKeyboardEvent.message == NS_KEY_DOWN) {
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return true;
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}
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if (aKeyboardEvent.message == NS_USER_DEFINED_EVENT &&
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aKeyboardEvent.userType &&
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nsDependentAtomString(aKeyboardEvent.userType).EqualsLiteral("on")) {
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return true;
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}
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return false;
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}
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TextInputProcessor::EventDispatcherResult
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TextInputProcessor::MaybeDispatchKeydownForComposition(
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const WidgetKeyboardEvent* aKeyboardEvent,
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uint32_t aKeyFlags)
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{
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EventDispatcherResult result;
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result.mResult = IsValidStateForComposition();
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if (NS_WARN_IF(NS_FAILED(result.mResult))) {
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result.mCanContinue = false;
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return result;
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}
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if (!aKeyboardEvent) {
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return result;
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}
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// Modifier keys are not allowed because managing modifier state in this
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// method makes this messy.
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if (NS_WARN_IF(aKeyboardEvent->IsModifierKeyEvent())) {
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result.mResult = NS_ERROR_INVALID_ARG;
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result.mCanContinue = false;
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return result;
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}
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result.mResult = KeydownInternal(*aKeyboardEvent, aKeyFlags, false,
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result.mDoDefault);
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if (NS_WARN_IF(NS_FAILED(result.mResult))) {
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result.mCanContinue = false;
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return result;
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}
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result.mCanContinue = NS_SUCCEEDED(IsValidStateForComposition());
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return result;
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}
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TextInputProcessor::EventDispatcherResult
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TextInputProcessor::MaybeDispatchKeyupForComposition(
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const WidgetKeyboardEvent* aKeyboardEvent,
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uint32_t aKeyFlags)
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{
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EventDispatcherResult result;
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if (!aKeyboardEvent) {
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return result;
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}
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// If the message is NS_KEY_DOWN, the caller doesn't want TIP to dispatch
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// keyup event.
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if (aKeyboardEvent->message == NS_KEY_DOWN) {
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return result;
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}
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// If the widget has been destroyed, we can do nothing here.
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result.mResult = IsValidStateForComposition();
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if (NS_FAILED(result.mResult)) {
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result.mCanContinue = false;
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return result;
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}
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result.mResult = KeyupInternal(*aKeyboardEvent, aKeyFlags, result.mDoDefault);
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if (NS_WARN_IF(NS_FAILED(result.mResult))) {
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result.mCanContinue = false;
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return result;
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}
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result.mCanContinue = NS_SUCCEEDED(IsValidStateForComposition());
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return result;
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}
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nsresult
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TextInputProcessor::PrepareKeyboardEventForComposition(
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nsIDOMKeyEvent* aDOMKeyEvent,
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uint32_t& aKeyFlags,
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uint8_t aOptionalArgc,
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WidgetKeyboardEvent*& aKeyboardEvent)
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{
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aKeyboardEvent = nullptr;
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aKeyboardEvent =
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aOptionalArgc && aDOMKeyEvent ?
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aDOMKeyEvent->GetInternalNSEvent()->AsKeyboardEvent() : nullptr;
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if (!aKeyboardEvent || aOptionalArgc < 2) {
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aKeyFlags = 0;
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}
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if (!aKeyboardEvent) {
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return NS_OK;
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}
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if (NS_WARN_IF(!IsValidEventTypeForComposition(*aKeyboardEvent))) {
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return NS_ERROR_INVALID_ARG;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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TextInputProcessor::StartComposition(nsIDOMKeyEvent* aDOMKeyEvent,
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uint32_t aKeyFlags,
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uint8_t aOptionalArgc,
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bool* aSucceeded)
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{
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MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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*aSucceeded = false;
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nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
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WidgetKeyboardEvent* keyboardEvent;
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nsresult rv =
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PrepareKeyboardEventForComposition(aDOMKeyEvent, aKeyFlags, aOptionalArgc,
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keyboardEvent);
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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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EventDispatcherResult dispatcherResult =
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MaybeDispatchKeydownForComposition(keyboardEvent, aKeyFlags);
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if (NS_WARN_IF(NS_FAILED(dispatcherResult.mResult)) ||
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!dispatcherResult.mCanContinue) {
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return dispatcherResult.mResult;
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}
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if (dispatcherResult.mDoDefault) {
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nsEventStatus status = nsEventStatus_eIgnore;
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rv = mDispatcher->StartComposition(status);
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*aSucceeded = status != nsEventStatus_eConsumeNoDefault &&
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mDispatcher && mDispatcher->IsComposing();
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}
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MaybeDispatchKeyupForComposition(keyboardEvent, aKeyFlags);
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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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NS_IMETHODIMP
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TextInputProcessor::SetPendingCompositionString(const nsAString& aString)
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{
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
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nsresult rv = IsValidStateForComposition();
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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 mDispatcher->SetPendingCompositionString(aString);
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}
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NS_IMETHODIMP
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TextInputProcessor::AppendClauseToPendingComposition(uint32_t aLength,
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uint32_t aAttribute)
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{
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
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switch (aAttribute) {
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case ATTR_RAW_CLAUSE:
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case ATTR_SELECTED_RAW_CLAUSE:
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case ATTR_CONVERTED_CLAUSE:
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case ATTR_SELECTED_CLAUSE:
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break;
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default:
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return NS_ERROR_INVALID_ARG;
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}
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nsresult rv = IsValidStateForComposition();
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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 mDispatcher->AppendClauseToPendingComposition(aLength, aAttribute);
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}
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NS_IMETHODIMP
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TextInputProcessor::SetCaretInPendingComposition(uint32_t aOffset)
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{
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
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nsresult rv = IsValidStateForComposition();
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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 mDispatcher->SetCaretInPendingComposition(aOffset, 0);
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}
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NS_IMETHODIMP
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TextInputProcessor::FlushPendingComposition(nsIDOMKeyEvent* aDOMKeyEvent,
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uint32_t aKeyFlags,
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uint8_t aOptionalArgc,
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bool* aSucceeded)
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{
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MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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// Even if this doesn't flush pending composition actually, we need to reset
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// pending composition for starting next composition with new user input.
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AutoPendingCompositionResetter resetter(this);
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*aSucceeded = false;
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nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
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bool wasComposing = IsComposing();
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WidgetKeyboardEvent* keyboardEvent;
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nsresult rv =
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PrepareKeyboardEventForComposition(aDOMKeyEvent, aKeyFlags, aOptionalArgc,
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keyboardEvent);
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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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EventDispatcherResult dispatcherResult =
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MaybeDispatchKeydownForComposition(keyboardEvent, aKeyFlags);
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if (NS_WARN_IF(NS_FAILED(dispatcherResult.mResult)) ||
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!dispatcherResult.mCanContinue) {
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return dispatcherResult.mResult;
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}
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// Even if the preceding keydown event was consumed, if the composition
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// was already started, we shouldn't prevent the change of composition.
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if (dispatcherResult.mDoDefault || wasComposing) {
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// Preceding keydown event may cause destroying the widget.
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if (NS_FAILED(IsValidStateForComposition())) {
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return NS_OK;
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}
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nsEventStatus status = nsEventStatus_eIgnore;
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rv = mDispatcher->FlushPendingComposition(status);
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*aSucceeded = status != nsEventStatus_eConsumeNoDefault;
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}
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MaybeDispatchKeyupForComposition(keyboardEvent, aKeyFlags);
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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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NS_IMETHODIMP
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TextInputProcessor::CommitComposition(nsIDOMKeyEvent* aDOMKeyEvent,
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uint32_t aKeyFlags,
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uint8_t aOptionalArgc)
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{
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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WidgetKeyboardEvent* keyboardEvent;
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nsresult rv =
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PrepareKeyboardEventForComposition(aDOMKeyEvent, aKeyFlags, aOptionalArgc,
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keyboardEvent);
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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 CommitCompositionInternal(keyboardEvent, aKeyFlags);
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}
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NS_IMETHODIMP
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TextInputProcessor::CommitCompositionWith(const nsAString& aCommitString,
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nsIDOMKeyEvent* aDOMKeyEvent,
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uint32_t aKeyFlags,
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uint8_t aOptionalArgc,
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bool* aSucceeded)
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{
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MOZ_RELEASE_ASSERT(aSucceeded, "aSucceeded must not be nullptr");
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MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
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WidgetKeyboardEvent* keyboardEvent;
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nsresult rv =
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PrepareKeyboardEventForComposition(aDOMKeyEvent, aKeyFlags, aOptionalArgc,
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keyboardEvent);
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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 CommitCompositionInternal(keyboardEvent, aKeyFlags,
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&aCommitString, aSucceeded);
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}
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nsresult
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TextInputProcessor::CommitCompositionInternal(
|
|
const WidgetKeyboardEvent* aKeyboardEvent,
|
|
uint32_t aKeyFlags,
|
|
const nsAString* aCommitString,
|
|
bool* aSucceeded)
|
|
{
|
|
if (aSucceeded) {
|
|
*aSucceeded = false;
|
|
}
|
|
nsRefPtr<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 = mDispatcher->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(nsIDOMKeyEvent* aDOMKeyEvent,
|
|
uint32_t aKeyFlags,
|
|
uint8_t aOptionalArgc)
|
|
{
|
|
MOZ_RELEASE_ASSERT(nsContentUtils::IsCallerChrome());
|
|
|
|
WidgetKeyboardEvent* keyboardEvent;
|
|
nsresult rv =
|
|
PrepareKeyboardEventForComposition(aDOMKeyEvent, 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)
|
|
{
|
|
nsRefPtr<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 = mDispatcher->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.
|
|
if (!mDispatcher) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
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) {
|
|
nsRefPtr<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;
|
|
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_(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();
|
|
}
|
|
|
|
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.location)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
} else if (!aKeyboardEvent.location) {
|
|
// If KeyboardEvent.location is 0, it may be uninitialized. If so, we
|
|
// should compute proper location value from its .code value.
|
|
aKeyboardEvent.location =
|
|
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.keyCode)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
} else if (!aKeyboardEvent.keyCode &&
|
|
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.keyCode =
|
|
WidgetKeyboardEvent::ComputeKeyCodeFromKeyNameIndex(
|
|
aKeyboardEvent.mKeyNameIndex);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputProcessor::Keydown(nsIDOMKeyEvent* 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->GetInternalNSEvent()->AsKeyboardEvent();
|
|
if (NS_WARN_IF(!originalKeyEvent)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
return KeydownInternal(*originalKeyEvent, aKeyFlags, true, *aDoDefault);
|
|
}
|
|
|
|
nsresult
|
|
TextInputProcessor::KeydownInternal(const WidgetKeyboardEvent& aKeyboardEvent,
|
|
uint32_t aKeyFlags,
|
|
bool aAllowToDispatchKeypress,
|
|
bool& aDoDefault)
|
|
{
|
|
aDoDefault = false;
|
|
|
|
// We shouldn't modify the internal WidgetKeyboardEvent.
|
|
WidgetKeyboardEvent keyEvent(aKeyboardEvent);
|
|
nsresult rv = PrepareKeyboardEventToDispatch(keyEvent, aKeyFlags);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
aDoDefault = !(aKeyFlags & KEY_DEFAULT_PREVENTED);
|
|
|
|
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.modifiers = GetActiveModifiers();
|
|
|
|
nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
|
|
rv = IsValidStateForComposition();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
nsEventStatus status = aDoDefault ? nsEventStatus_eIgnore :
|
|
nsEventStatus_eConsumeNoDefault;
|
|
if (!mDispatcher->DispatchKeyboardEvent(NS_KEY_DOWN, keyEvent, status)) {
|
|
// If keydown event isn't dispatched, we don't need to dispatch keypress
|
|
// events.
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aAllowToDispatchKeypress) {
|
|
mDispatcher->MaybeDispatchKeypressEvents(keyEvent, status);
|
|
}
|
|
|
|
aDoDefault = (status != nsEventStatus_eConsumeNoDefault);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputProcessor::Keyup(nsIDOMKeyEvent* 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->GetInternalNSEvent()->AsKeyboardEvent();
|
|
if (NS_WARN_IF(!originalKeyEvent)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
return KeyupInternal(*originalKeyEvent, aKeyFlags, *aDoDefault);
|
|
}
|
|
|
|
nsresult
|
|
TextInputProcessor::KeyupInternal(const WidgetKeyboardEvent& aKeyboardEvent,
|
|
uint32_t aKeyFlags,
|
|
bool& aDoDefault)
|
|
{
|
|
aDoDefault = false;
|
|
|
|
// We shouldn't modify the internal WidgetKeyboardEvent.
|
|
WidgetKeyboardEvent keyEvent(aKeyboardEvent);
|
|
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.modifiers = GetActiveModifiers();
|
|
|
|
nsRefPtr<TextEventDispatcher> kungfuDeathGrip(mDispatcher);
|
|
rv = IsValidStateForComposition();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
nsEventStatus status = aDoDefault ? nsEventStatus_eIgnore :
|
|
nsEventStatus_eConsumeNoDefault;
|
|
mDispatcher->DispatchKeyboardEvent(NS_KEY_UP, 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());
|
|
if (!mModifierKeyDataArray) {
|
|
*aActive = false;
|
|
return NS_OK;
|
|
}
|
|
Modifiers activeModifiers = mModifierKeyDataArray->GetActiveModifiers();
|
|
Modifiers modifier = WidgetInputEvent::GetModifier(aModifierKeyName);
|
|
*aActive = ((activeModifiers & 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;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* 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
|