mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
390 lines
11 KiB
C++
390 lines
11 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 "WinIMEHandler.h"
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#include "nsIMM32Handler.h"
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#ifdef NS_ENABLE_TSF
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#include "nsTextStore.h"
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#endif // #ifdef NS_ENABLE_TSF
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#include "nsWindow.h"
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namespace mozilla {
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namespace widget {
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/******************************************************************************
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* IMEHandler
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******************************************************************************/
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#ifdef NS_ENABLE_TSF
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bool IMEHandler::sIsInTSFMode = false;
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bool IMEHandler::sPluginHasFocus = false;
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#endif // #ifdef NS_ENABLE_TSF
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// static
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void
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IMEHandler::Initialize()
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{
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#ifdef NS_ENABLE_TSF
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nsTextStore::Initialize();
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sIsInTSFMode = nsTextStore::IsInTSFMode();
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#endif // #ifdef NS_ENABLE_TSF
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nsIMM32Handler::Initialize();
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}
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// static
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void
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IMEHandler::Terminate()
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{
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#ifdef NS_ENABLE_TSF
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if (sIsInTSFMode) {
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nsTextStore::Terminate();
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sIsInTSFMode = false;
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}
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#endif // #ifdef NS_ENABLE_TSF
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nsIMM32Handler::Terminate();
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}
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// static
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void*
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IMEHandler::GetNativeData(uint32_t aDataType)
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{
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#ifdef NS_ENABLE_TSF
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void* result = nsTextStore::GetNativeData(aDataType);
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if (!result || !(*(static_cast<void**>(result)))) {
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return nullptr;
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}
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// XXX During the TSF module test, sIsInTSFMode must be true. After that,
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// the value should be restored but currently, there is no way for that.
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// When the TSF test is enabled again, we need to fix this. Perhaps,
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// sending a message can fix this.
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sIsInTSFMode = true;
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return result;
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#else // #ifdef NS_ENABLE_TSF
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return nullptr;
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#endif // #ifdef NS_ENABLE_TSF #else
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}
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// static
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bool
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IMEHandler::CanOptimizeKeyAndIMEMessages()
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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return nsTextStore::CanOptimizeKeyAndIMEMessages();
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}
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#endif // #ifdef NS_ENABLE_TSF
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return nsIMM32Handler::CanOptimizeKeyAndIMEMessages();
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}
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// static
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bool
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IMEHandler::IsIMEEnabled(const InputContext& aInputContext)
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{
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return IsIMEEnabled(aInputContext.mIMEState.mEnabled);
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}
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// static
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bool
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IMEHandler::IsIMEEnabled(IMEState::Enabled aIMEState)
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{
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return (aIMEState == mozilla::widget::IMEState::ENABLED ||
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aIMEState == mozilla::widget::IMEState::PLUGIN);
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}
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// static
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bool
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IMEHandler::ProcessMessage(nsWindow* aWindow, UINT aMessage,
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WPARAM& aWParam, LPARAM& aLParam,
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LRESULT* aRetValue, bool& aEatMessage)
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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if (aMessage == WM_USER_TSF_TEXTCHANGE) {
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nsTextStore::OnTextChangeMsg();
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aEatMessage = true;
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return true;
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}
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return false;
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}
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#endif // #ifdef NS_ENABLE_TSF
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return nsIMM32Handler::ProcessMessage(aWindow, aMessage, aWParam, aLParam,
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aRetValue, aEatMessage);
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}
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// static
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bool
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IMEHandler::IsComposing()
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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return nsTextStore::IsComposing();
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}
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#endif // #ifdef NS_ENABLE_TSF
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return nsIMM32Handler::IsComposing();
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}
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// static
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bool
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IMEHandler::IsComposingOn(nsWindow* aWindow)
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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return nsTextStore::IsComposingOn(aWindow);
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}
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#endif // #ifdef NS_ENABLE_TSF
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return nsIMM32Handler::IsComposingOn(aWindow);
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}
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// static
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nsresult
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IMEHandler::NotifyIME(nsWindow* aWindow,
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NotificationToIME aNotification)
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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switch (aNotification) {
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case NOTIFY_IME_OF_SELECTION_CHANGE:
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return nsTextStore::OnSelectionChange();
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case NOTIFY_IME_OF_FOCUS:
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return nsTextStore::OnFocusChange(true, aWindow,
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aWindow->GetInputContext().mIMEState.mEnabled);
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case NOTIFY_IME_OF_BLUR:
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return nsTextStore::OnFocusChange(false, aWindow,
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aWindow->GetInputContext().mIMEState.mEnabled);
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case REQUEST_TO_COMMIT_COMPOSITION:
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if (nsTextStore::IsComposingOn(aWindow)) {
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nsTextStore::CommitComposition(false);
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}
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return NS_OK;
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case REQUEST_TO_CANCEL_COMPOSITION:
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if (nsTextStore::IsComposingOn(aWindow)) {
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nsTextStore::CommitComposition(true);
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}
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return NS_OK;
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default:
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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}
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#endif //NS_ENABLE_TSF
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switch (aNotification) {
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case REQUEST_TO_COMMIT_COMPOSITION:
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nsIMM32Handler::CommitComposition(aWindow);
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return NS_OK;
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case REQUEST_TO_CANCEL_COMPOSITION:
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nsIMM32Handler::CancelComposition(aWindow);
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return NS_OK;
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#ifdef NS_ENABLE_TSF
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case NOTIFY_IME_OF_BLUR:
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// If a plugin gets focus while TSF has focus, we need to notify TSF of
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// the blur.
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if (nsTextStore::ThinksHavingFocus()) {
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return nsTextStore::OnFocusChange(false, aWindow,
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aWindow->GetInputContext().mIMEState.mEnabled);
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}
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return NS_ERROR_NOT_IMPLEMENTED;
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#endif //NS_ENABLE_TSF
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default:
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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}
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// static
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nsresult
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IMEHandler::NotifyIMEOfTextChange(uint32_t aStart,
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uint32_t aOldEnd,
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uint32_t aNewEnd)
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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return nsTextStore::OnTextChange(aStart, aOldEnd, aNewEnd);
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}
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#endif //NS_ENABLE_TSF
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// static
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nsIMEUpdatePreference
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IMEHandler::GetUpdatePreference()
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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return nsTextStore::GetIMEUpdatePreference();
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}
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#endif //NS_ENABLE_TSF
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return nsIMEUpdatePreference(false, false);
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}
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// static
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bool
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IMEHandler::GetOpenState(nsWindow* aWindow)
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{
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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return nsTextStore::GetIMEOpenState();
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}
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#endif //NS_ENABLE_TSF
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nsIMEContext IMEContext(aWindow->GetWindowHandle());
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return IMEContext.GetOpenState();
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}
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// static
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void
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IMEHandler::OnDestroyWindow(nsWindow* aWindow)
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{
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// We need to do nothing here for TSF. Just restore the default context
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// if it's been disassociated.
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nsIMEContext IMEContext(aWindow->GetWindowHandle());
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IMEContext.AssociateDefaultContext();
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}
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// static
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void
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IMEHandler::SetInputContext(nsWindow* aWindow, InputContext& aInputContext)
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{
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// FYI: If there is no composition, this call will do nothing.
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NotifyIME(aWindow, REQUEST_TO_COMMIT_COMPOSITION);
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// Assume that SetInputContext() is called only when aWindow has focus.
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sPluginHasFocus = (aInputContext.mIMEState.mEnabled == IMEState::PLUGIN);
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bool enable = IsIMEEnabled(aInputContext);
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bool adjustOpenState = (enable &&
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aInputContext.mIMEState.mOpen != IMEState::DONT_CHANGE_OPEN_STATE);
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bool open = (adjustOpenState &&
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aInputContext.mIMEState.mOpen == IMEState::OPEN);
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aInputContext.mNativeIMEContext = nullptr;
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#ifdef NS_ENABLE_TSF
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// Note that even while a plugin has focus, we need to notify TSF of that.
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if (sIsInTSFMode) {
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nsTextStore::SetInputContext(aInputContext);
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if (IsTSFAvailable()) {
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aInputContext.mNativeIMEContext = nsTextStore::GetTextStore();
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}
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// Currently, nsTextStore doesn't set focus to keyboard disabled document.
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// Therefore, we still need to perform the following legacy code.
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}
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#endif // #ifdef NS_ENABLE_TSF
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nsIMEContext IMEContext(aWindow->GetWindowHandle());
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if (enable) {
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IMEContext.AssociateDefaultContext();
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if (!aInputContext.mNativeIMEContext) {
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aInputContext.mNativeIMEContext = static_cast<void*>(IMEContext.get());
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}
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} else if (!aWindow->Destroyed()) {
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// Don't disassociate the context after the window is destroyed.
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IMEContext.Disassociate();
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if (!aInputContext.mNativeIMEContext) {
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// The old InputContext must store the default IMC.
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aInputContext.mNativeIMEContext =
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aWindow->GetInputContext().mNativeIMEContext;
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}
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}
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if (adjustOpenState) {
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#ifdef NS_ENABLE_TSF
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if (IsTSFAvailable()) {
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nsTextStore::SetIMEOpenState(open);
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return;
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}
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#endif // #ifdef NS_ENABLE_TSF
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IMEContext.SetOpenState(open);
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}
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}
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// static
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void
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IMEHandler::InitInputContext(nsWindow* aWindow, InputContext& aInputContext)
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{
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// For a11y, the default enabled state should be 'enabled'.
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aInputContext.mIMEState.mEnabled = IMEState::ENABLED;
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#ifdef NS_ENABLE_TSF
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if (sIsInTSFMode) {
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nsTextStore::SetInputContext(aInputContext);
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aInputContext.mNativeIMEContext = nsTextStore::GetTextStore();
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MOZ_ASSERT(aInputContext.mNativeIMEContext);
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return;
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}
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#endif // #ifdef NS_ENABLE_TSF
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// NOTE: mNativeIMEContext may be null if IMM module isn't installed.
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nsIMEContext IMEContext(aWindow->GetWindowHandle());
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aInputContext.mNativeIMEContext = static_cast<void*>(IMEContext.get());
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MOZ_ASSERT(aInputContext.mNativeIMEContext || !CurrentKeyboardLayoutHasIME());
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// If no IME context is available, we should set the widget's pointer since
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// nullptr indicates there is only one context per process on the platform.
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if (!aInputContext.mNativeIMEContext) {
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aInputContext.mNativeIMEContext = static_cast<void*>(aWindow);
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}
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}
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#ifdef DEBUG
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// static
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bool
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IMEHandler::CurrentKeyboardLayoutHasIME()
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{
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#ifdef NS_ENABLE_TSF
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if (sIsInTSFMode) {
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return nsTextStore::CurrentKeyboardLayoutHasIME();
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}
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#endif // #ifdef NS_ENABLE_TSF
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return nsIMM32Handler::IsIMEAvailable();
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}
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#endif // #ifdef DEBUG
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// static
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bool
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IMEHandler::IsDoingKakuteiUndo(HWND aWnd)
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{
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// Following message pattern is caused by "Kakutei-Undo" of ATOK or WXG:
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// ---------------------------------------------------------------------------
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// WM_KEYDOWN * n (wParam = VK_BACK, lParam = 0x1)
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// WM_KEYUP * 1 (wParam = VK_BACK, lParam = 0xC0000001) # ATOK
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// WM_IME_STARTCOMPOSITION * 1 (wParam = 0x0, lParam = 0x0)
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// WM_IME_COMPOSITION * 1 (wParam = 0x0, lParam = 0x1BF)
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// WM_CHAR * n (wParam = VK_BACK, lParam = 0x1)
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// WM_KEYUP * 1 (wParam = VK_BACK, lParam = 0xC00E0001)
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// ---------------------------------------------------------------------------
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// This doesn't match usual key message pattern such as:
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// WM_KEYDOWN -> WM_CHAR -> WM_KEYDOWN -> WM_CHAR -> ... -> WM_KEYUP
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// See following bugs for the detail.
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// https://bugzilla.mozilla.gr.jp/show_bug.cgi?id=2885 (written in Japanese)
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// https://bugzilla.mozilla.org/show_bug.cgi?id=194559 (written in English)
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MSG startCompositionMsg, compositionMsg, charMsg;
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return ::PeekMessageW(&startCompositionMsg, aWnd,
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WM_IME_STARTCOMPOSITION, WM_IME_STARTCOMPOSITION,
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PM_NOREMOVE | PM_NOYIELD) &&
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::PeekMessageW(&compositionMsg, aWnd, WM_IME_COMPOSITION,
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WM_IME_COMPOSITION, PM_NOREMOVE | PM_NOYIELD) &&
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::PeekMessageW(&charMsg, aWnd, WM_CHAR, WM_CHAR,
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PM_NOREMOVE | PM_NOYIELD) &&
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startCompositionMsg.wParam == 0x0 &&
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startCompositionMsg.lParam == 0x0 &&
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compositionMsg.wParam == 0x0 &&
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compositionMsg.lParam == 0x1BF &&
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charMsg.wParam == VK_BACK && charMsg.lParam == 0x1 &&
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startCompositionMsg.time <= compositionMsg.time &&
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compositionMsg.time <= charMsg.time;
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}
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} // namespace widget
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} // namespace mozilla
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