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gecko-dev/widget/windows/nsIMM32Handler.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sts=2 sw=2 et cin: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "prlog.h"
#include "nsIMM32Handler.h"
#include "nsWindow.h"
#include "nsWindowDefs.h"
#include "WinUtils.h"
#include "KeyboardLayout.h"
#include <algorithm>
#include "mozilla/MiscEvents.h"
#include "mozilla/TextEvents.h"
using namespace mozilla;
using namespace mozilla::widget;
static nsIMM32Handler* gIMM32Handler = nullptr;
#ifdef PR_LOGGING
PRLogModuleInfo* gIMM32Log = nullptr;
#endif
static UINT sWM_MSIME_MOUSE = 0; // mouse message for MSIME 98/2000
//-------------------------------------------------------------------------
//
// from http://download.microsoft.com/download/6/0/9/60908e9e-d2c1-47db-98f6-216af76a235f/msime.h
// The document for this has been removed from MSDN...
//
//-------------------------------------------------------------------------
#define RWM_MOUSE TEXT("MSIMEMouseOperation")
#define IMEMOUSE_NONE 0x00 // no mouse button was pushed
#define IMEMOUSE_LDOWN 0x01
#define IMEMOUSE_RDOWN 0x02
#define IMEMOUSE_MDOWN 0x04
#define IMEMOUSE_WUP 0x10 // wheel up
#define IMEMOUSE_WDOWN 0x20 // wheel down
UINT nsIMM32Handler::sCodePage = 0;
DWORD nsIMM32Handler::sIMEProperty = 0;
/* static */ void
nsIMM32Handler::EnsureHandlerInstance()
{
if (!gIMM32Handler) {
gIMM32Handler = new nsIMM32Handler();
}
}
/* static */ void
nsIMM32Handler::Initialize()
{
#ifdef PR_LOGGING
if (!gIMM32Log)
gIMM32Log = PR_NewLogModule("nsIMM32HandlerWidgets");
#endif
if (!sWM_MSIME_MOUSE) {
sWM_MSIME_MOUSE = ::RegisterWindowMessage(RWM_MOUSE);
}
InitKeyboardLayout(::GetKeyboardLayout(0));
}
/* static */ void
nsIMM32Handler::Terminate()
{
if (!gIMM32Handler)
return;
delete gIMM32Handler;
gIMM32Handler = nullptr;
}
/* static */ bool
nsIMM32Handler::IsComposingOnOurEditor()
{
return gIMM32Handler && gIMM32Handler->mIsComposing;
}
/* static */ bool
nsIMM32Handler::IsComposingOnPlugin()
{
return gIMM32Handler && gIMM32Handler->mIsComposingOnPlugin;
}
/* static */ bool
nsIMM32Handler::IsComposingWindow(nsWindow* aWindow)
{
return gIMM32Handler && gIMM32Handler->mComposingWindow == aWindow;
}
/* static */ bool
nsIMM32Handler::IsTopLevelWindowOfComposition(nsWindow* aWindow)
{
if (!gIMM32Handler || !gIMM32Handler->mComposingWindow) {
return false;
}
HWND wnd = gIMM32Handler->mComposingWindow->GetWindowHandle();
return WinUtils::GetTopLevelHWND(wnd, true) == aWindow->GetWindowHandle();
}
/* static */ bool
nsIMM32Handler::ShouldDrawCompositionStringOurselves()
{
// If current IME has special UI or its composition window should not
// positioned to caret position, we should now draw composition string
// ourselves.
return !(sIMEProperty & IME_PROP_SPECIAL_UI) &&
(sIMEProperty & IME_PROP_AT_CARET);
}
/* static */ void
nsIMM32Handler::InitKeyboardLayout(HKL aKeyboardLayout)
{
WORD langID = LOWORD(aKeyboardLayout);
::GetLocaleInfoW(MAKELCID(langID, SORT_DEFAULT),
LOCALE_IDEFAULTANSICODEPAGE | LOCALE_RETURN_NUMBER,
(PWSTR)&sCodePage, sizeof(sCodePage) / sizeof(WCHAR));
sIMEProperty = ::ImmGetProperty(aKeyboardLayout, IGP_PROPERTY);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: InitKeyboardLayout, aKeyboardLayout=%08x, sCodePage=%lu, "
"sIMEProperty=%08x",
aKeyboardLayout, sCodePage, sIMEProperty));
}
/* static */ UINT
nsIMM32Handler::GetKeyboardCodePage()
{
return sCodePage;
}
/* static */
nsIMEUpdatePreference
nsIMM32Handler::GetIMEUpdatePreference()
{
return nsIMEUpdatePreference(
nsIMEUpdatePreference::NOTIFY_POSITION_CHANGE |
nsIMEUpdatePreference::NOTIFY_MOUSE_BUTTON_EVENT_ON_CHAR);
}
// used for checking the lParam of WM_IME_COMPOSITION
#define IS_COMPOSING_LPARAM(lParam) \
((lParam) & (GCS_COMPSTR | GCS_COMPATTR | GCS_COMPCLAUSE | GCS_CURSORPOS))
#define IS_COMMITTING_LPARAM(lParam) ((lParam) & GCS_RESULTSTR)
// Some IMEs (e.g., the standard IME for Korean) don't have caret position,
// then, we should not set caret position to compositionchange event.
#define NO_IME_CARET -1
nsIMM32Handler::nsIMM32Handler() :
mComposingWindow(nullptr), mCursorPosition(NO_IME_CARET), mCompositionStart(0),
mIsComposing(false), mIsComposingOnPlugin(false),
mNativeCaretIsCreated(false)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS, ("IMM32: nsIMM32Handler is created\n"));
}
nsIMM32Handler::~nsIMM32Handler()
{
if (mIsComposing) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: ~nsIMM32Handler, ERROR, the instance is still composing\n"));
}
PR_LOG(gIMM32Log, PR_LOG_ALWAYS, ("IMM32: nsIMM32Handler is destroyed\n"));
}
nsresult
nsIMM32Handler::EnsureClauseArray(int32_t aCount)
{
NS_ENSURE_ARG_MIN(aCount, 0);
mClauseArray.SetCapacity(aCount + 32);
return NS_OK;
}
nsresult
nsIMM32Handler::EnsureAttributeArray(int32_t aCount)
{
NS_ENSURE_ARG_MIN(aCount, 0);
mAttributeArray.SetCapacity(aCount + 64);
return NS_OK;
}
/* static */ void
nsIMM32Handler::CommitComposition(nsWindow* aWindow, bool aForce)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CommitComposition, aForce=%s, aWindow=%p, hWnd=%08x, mComposingWindow=%p%s\n",
aForce ? "TRUE" : "FALSE",
aWindow, aWindow->GetWindowHandle(),
gIMM32Handler ? gIMM32Handler->mComposingWindow : nullptr,
gIMM32Handler && gIMM32Handler->mComposingWindow ?
IsComposingOnOurEditor() ? " (composing on editor)" :
" (composing on plug-in)" : ""));
if (!aForce && !IsComposingWindow(aWindow)) {
return;
}
nsIMEContext IMEContext(aWindow->GetWindowHandle());
bool associated = IMEContext.AssociateDefaultContext();
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CommitComposition, associated=%s\n",
associated ? "YES" : "NO"));
if (IMEContext.IsValid()) {
::ImmNotifyIME(IMEContext.get(), NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
::ImmNotifyIME(IMEContext.get(), NI_COMPOSITIONSTR, CPS_CANCEL, 0);
}
if (associated) {
IMEContext.Disassociate();
}
}
/* static */ void
nsIMM32Handler::CancelComposition(nsWindow* aWindow, bool aForce)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CancelComposition, aForce=%s, aWindow=%p, hWnd=%08x, mComposingWindow=%p%s\n",
aForce ? "TRUE" : "FALSE",
aWindow, aWindow->GetWindowHandle(),
gIMM32Handler ? gIMM32Handler->mComposingWindow : nullptr,
gIMM32Handler && gIMM32Handler->mComposingWindow ?
IsComposingOnOurEditor() ? " (composing on editor)" :
" (composing on plug-in)" : ""));
if (!aForce && !IsComposingWindow(aWindow)) {
return;
}
nsIMEContext IMEContext(aWindow->GetWindowHandle());
bool associated = IMEContext.AssociateDefaultContext();
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CancelComposition, associated=%s\n",
associated ? "YES" : "NO"));
if (IMEContext.IsValid()) {
::ImmNotifyIME(IMEContext.get(), NI_COMPOSITIONSTR, CPS_CANCEL, 0);
}
if (associated) {
IMEContext.Disassociate();
}
}
// static
void
nsIMM32Handler::OnUpdateComposition(nsWindow* aWindow)
{
if (!gIMM32Handler) {
return;
}
if (aWindow->PluginHasFocus()) {
return;
}
nsIMEContext IMEContext(aWindow->GetWindowHandle());
gIMM32Handler->SetIMERelatedWindowsPos(aWindow, IMEContext);
}
/* static */ bool
nsIMM32Handler::ProcessInputLangChangeMessage(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
aResult.mResult = 0;
aResult.mConsumed = false;
// We don't need to create the instance of the handler here.
if (gIMM32Handler) {
gIMM32Handler->OnInputLangChange(aWindow, wParam, lParam, aResult);
}
InitKeyboardLayout(reinterpret_cast<HKL>(lParam));
// We can release the instance here, because the instance may be never
// used. E.g., the new keyboard layout may not use IME, or it may use TSF.
Terminate();
// Don't return as "processed", the messages should be processed on nsWindow
// too.
return false;
}
/* static */ bool
nsIMM32Handler::ProcessMessage(nsWindow* aWindow, UINT msg,
WPARAM &wParam, LPARAM &lParam,
MSGResult& aResult)
{
// XXX We store the composing window in mComposingWindow. If IME messages are
// sent to different window, we should commit the old transaction. And also
// if the new window handle is not focused, probably, we should not start
// the composition, however, such case should not be, it's just bad scenario.
// When a plug-in has focus or compsition, we should dispatch the IME events
// to the plug-in.
if (aWindow->PluginHasFocus() || IsComposingOnPlugin()) {
return ProcessMessageForPlugin(aWindow, msg, wParam, lParam, aResult);
}
aResult.mResult = 0;
switch (msg) {
case WM_INPUTLANGCHANGE:
return ProcessInputLangChangeMessage(aWindow, wParam, lParam, aResult);
case WM_IME_STARTCOMPOSITION:
EnsureHandlerInstance();
return gIMM32Handler->OnIMEStartComposition(aWindow, aResult);
case WM_IME_COMPOSITION:
EnsureHandlerInstance();
return gIMM32Handler->OnIMEComposition(aWindow, wParam, lParam, aResult);
case WM_IME_ENDCOMPOSITION:
EnsureHandlerInstance();
return gIMM32Handler->OnIMEEndComposition(aWindow, aResult);
case WM_IME_CHAR:
return OnIMEChar(aWindow, wParam, lParam, aResult);
case WM_IME_NOTIFY:
return OnIMENotify(aWindow, wParam, lParam, aResult);
case WM_IME_REQUEST:
EnsureHandlerInstance();
return gIMM32Handler->OnIMERequest(aWindow, wParam, lParam, aResult);
case WM_IME_SELECT:
return OnIMESelect(aWindow, wParam, lParam, aResult);
case WM_IME_SETCONTEXT:
return OnIMESetContext(aWindow, wParam, lParam, aResult);
case WM_KEYDOWN:
return OnKeyDownEvent(aWindow, wParam, lParam, aResult);
case WM_CHAR:
if (!gIMM32Handler) {
return false;
}
return gIMM32Handler->OnChar(aWindow, wParam, lParam, aResult);
default:
return false;
};
}
/* static */ bool
nsIMM32Handler::ProcessMessageForPlugin(nsWindow* aWindow, UINT msg,
WPARAM &wParam, LPARAM &lParam,
MSGResult& aResult)
{
aResult.mResult = 0;
aResult.mConsumed = false;
switch (msg) {
case WM_INPUTLANGCHANGEREQUEST:
case WM_INPUTLANGCHANGE:
aWindow->DispatchPluginEvent(msg, wParam, lParam, false);
return ProcessInputLangChangeMessage(aWindow, wParam, lParam, aResult);
case WM_IME_COMPOSITION:
EnsureHandlerInstance();
return gIMM32Handler->OnIMECompositionOnPlugin(aWindow, wParam, lParam,
aResult);
case WM_IME_STARTCOMPOSITION:
EnsureHandlerInstance();
return gIMM32Handler->OnIMEStartCompositionOnPlugin(aWindow, wParam,
lParam, aResult);
case WM_IME_ENDCOMPOSITION:
EnsureHandlerInstance();
return gIMM32Handler->OnIMEEndCompositionOnPlugin(aWindow, wParam, lParam,
aResult);
case WM_IME_CHAR:
EnsureHandlerInstance();
return gIMM32Handler->OnIMECharOnPlugin(aWindow, wParam, lParam, aResult);
case WM_IME_SETCONTEXT:
return OnIMESetContextOnPlugin(aWindow, wParam, lParam, aResult);
case WM_CHAR:
if (!gIMM32Handler) {
return false;
}
return gIMM32Handler->OnCharOnPlugin(aWindow, wParam, lParam, aResult);
case WM_IME_COMPOSITIONFULL:
case WM_IME_CONTROL:
case WM_IME_KEYDOWN:
case WM_IME_KEYUP:
case WM_IME_REQUEST:
case WM_IME_SELECT:
aResult.mConsumed =
aWindow->DispatchPluginEvent(msg, wParam, lParam, false);
return true;
}
return false;
}
/****************************************************************************
* message handlers
****************************************************************************/
void
nsIMM32Handler::OnInputLangChange(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnInputLangChange, hWnd=%08x, wParam=%08x, lParam=%08x\n",
aWindow->GetWindowHandle(), wParam, lParam));
aWindow->NotifyIME(REQUEST_TO_COMMIT_COMPOSITION);
NS_ASSERTION(!mIsComposing, "ResetInputState failed");
if (mIsComposing) {
HandleEndComposition(aWindow);
}
aResult.mConsumed = false;
}
bool
nsIMM32Handler::OnIMEStartComposition(nsWindow* aWindow,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEStartComposition, hWnd=%08x, mIsComposing=%s\n",
aWindow->GetWindowHandle(), mIsComposing ? "TRUE" : "FALSE"));
aResult.mConsumed = ShouldDrawCompositionStringOurselves();
if (mIsComposing) {
NS_WARNING("Composition has been already started");
return true;
}
nsIMEContext IMEContext(aWindow->GetWindowHandle());
HandleStartComposition(aWindow, IMEContext);
return true;
}
bool
nsIMM32Handler::OnIMEComposition(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEComposition, hWnd=%08x, lParam=%08x, mIsComposing=%s\n",
aWindow->GetWindowHandle(), lParam, mIsComposing ? "TRUE" : "FALSE"));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEComposition, GCS_RESULTSTR=%s, GCS_COMPSTR=%s, GCS_COMPATTR=%s, GCS_COMPCLAUSE=%s, GCS_CURSORPOS=%s\n",
lParam & GCS_RESULTSTR ? "YES" : "no",
lParam & GCS_COMPSTR ? "YES" : "no",
lParam & GCS_COMPATTR ? "YES" : "no",
lParam & GCS_COMPCLAUSE ? "YES" : "no",
lParam & GCS_CURSORPOS ? "YES" : "no"));
NS_PRECONDITION(!aWindow->PluginHasFocus(),
"OnIMEComposition should not be called when a plug-in has focus");
nsIMEContext IMEContext(aWindow->GetWindowHandle());
aResult.mConsumed = HandleComposition(aWindow, IMEContext, lParam);
return true;
}
bool
nsIMM32Handler::OnIMEEndComposition(nsWindow* aWindow,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEEndComposition, hWnd=%08x, mIsComposing=%s\n",
aWindow->GetWindowHandle(), mIsComposing ? "TRUE" : "FALSE"));
aResult.mConsumed = ShouldDrawCompositionStringOurselves();
if (!mIsComposing) {
return true;
}
// Korean IME posts WM_IME_ENDCOMPOSITION first when we hit space during
// composition. Then, we should ignore the message and commit the composition
// string at following WM_IME_COMPOSITION.
MSG compositionMsg;
if (WinUtils::PeekMessage(&compositionMsg, aWindow->GetWindowHandle(),
WM_IME_STARTCOMPOSITION, WM_IME_COMPOSITION,
PM_NOREMOVE) &&
compositionMsg.message == WM_IME_COMPOSITION &&
IS_COMMITTING_LPARAM(compositionMsg.lParam)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEEndComposition, WM_IME_ENDCOMPOSITION is followed by "
"WM_IME_COMPOSITION, ignoring the message..."));
return true;
}
// Otherwise, e.g., ChangJie doesn't post WM_IME_COMPOSITION before
// WM_IME_ENDCOMPOSITION when composition string becomes empty.
// Then, we should dispatch a compositionupdate event, a compositionchange
// event and a compositionend event.
// XXX Shouldn't we dispatch the compositionchange event with actual or
// latest composition string?
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEEndComposition, mCompositionString=\"%s\"%s",
NS_ConvertUTF16toUTF8(mCompositionString).get(),
mCompositionString.IsEmpty() ? "" : ", but canceling it..."));
mCompositionString.Truncate();
nsIMEContext IMEContext(aWindow->GetWindowHandle());
DispatchCompositionChangeEvent(aWindow, IMEContext, false);
HandleEndComposition(aWindow);
return true;
}
/* static */ bool
nsIMM32Handler::OnIMEChar(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEChar, hWnd=%08x, char=%08x\n",
aWindow->GetWindowHandle(), wParam));
// We don't need to fire any compositionchange events from here. This method
// will be called when the composition string of the current IME is not drawn
// by us and some characters are committed. In that case, the committed
// string was processed in nsWindow::OnIMEComposition already.
// We need to consume the message so that Windows don't send two WM_CHAR msgs
aResult.mConsumed = true;
return true;
}
/* static */ bool
nsIMM32Handler::OnIMECompositionFull(nsWindow* aWindow,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMECompositionFull, hWnd=%08x\n",
aWindow->GetWindowHandle()));
// not implement yet
aResult.mConsumed = false;
return true;
}
/* static */ bool
nsIMM32Handler::OnIMENotify(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
#ifdef PR_LOGGING
switch (wParam) {
case IMN_CHANGECANDIDATE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_CHANGECANDIDATE, lParam=%08x\n",
aWindow->GetWindowHandle(), lParam));
break;
case IMN_CLOSECANDIDATE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_CLOSECANDIDATE, lParam=%08x\n",
aWindow->GetWindowHandle(), lParam));
break;
case IMN_CLOSESTATUSWINDOW:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_CLOSESTATUSWINDOW\n",
aWindow->GetWindowHandle()));
break;
case IMN_GUIDELINE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_GUIDELINE\n",
aWindow->GetWindowHandle()));
break;
case IMN_OPENCANDIDATE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_OPENCANDIDATE, lParam=%08x\n",
aWindow->GetWindowHandle(), lParam));
break;
case IMN_OPENSTATUSWINDOW:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_OPENSTATUSWINDOW\n",
aWindow->GetWindowHandle()));
break;
case IMN_SETCANDIDATEPOS:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETCANDIDATEPOS, lParam=%08x\n",
aWindow->GetWindowHandle(), lParam));
break;
case IMN_SETCOMPOSITIONFONT:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETCOMPOSITIONFONT\n",
aWindow->GetWindowHandle()));
break;
case IMN_SETCOMPOSITIONWINDOW:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETCOMPOSITIONWINDOW\n",
aWindow->GetWindowHandle()));
break;
case IMN_SETCONVERSIONMODE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETCONVERSIONMODE\n",
aWindow->GetWindowHandle()));
break;
case IMN_SETOPENSTATUS:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETOPENSTATUS\n",
aWindow->GetWindowHandle()));
break;
case IMN_SETSENTENCEMODE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETSENTENCEMODE\n",
aWindow->GetWindowHandle()));
break;
case IMN_SETSTATUSWINDOWPOS:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_SETSTATUSWINDOWPOS\n",
aWindow->GetWindowHandle()));
break;
case IMN_PRIVATE:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMENotify, hWnd=%08x, IMN_PRIVATE\n",
aWindow->GetWindowHandle()));
break;
}
#endif // PR_LOGGING
// not implement yet
aResult.mConsumed = false;
return true;
}
bool
nsIMM32Handler::OnIMERequest(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
switch (wParam) {
case IMR_RECONVERTSTRING:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMERequest, hWnd=%08x, IMR_RECONVERTSTRING\n",
aWindow->GetWindowHandle()));
aResult.mConsumed = HandleReconvert(aWindow, lParam, &aResult.mResult);
return true;
case IMR_QUERYCHARPOSITION:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMERequest, hWnd=%08x, IMR_QUERYCHARPOSITION\n",
aWindow->GetWindowHandle()));
aResult.mConsumed =
HandleQueryCharPosition(aWindow, lParam, &aResult.mResult);
return true;
case IMR_DOCUMENTFEED:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMERequest, hWnd=%08x, IMR_DOCUMENTFEED\n",
aWindow->GetWindowHandle()));
aResult.mConsumed = HandleDocumentFeed(aWindow, lParam, &aResult.mResult);
return true;
default:
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMERequest, hWnd=%08x, wParam=%08x\n",
aWindow->GetWindowHandle(), wParam));
aResult.mConsumed = false;
return true;
}
}
/* static */ bool
nsIMM32Handler::OnIMESelect(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMESelect, hWnd=%08x, wParam=%08x, lParam=%08x\n",
aWindow->GetWindowHandle(), wParam, lParam));
// not implement yet
aResult.mConsumed = false;
return true;
}
/* static */ bool
nsIMM32Handler::OnIMESetContext(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMESetContext, hWnd=%08x, %s, lParam=%08x\n",
aWindow->GetWindowHandle(), wParam ? "Active" : "Deactive", lParam));
aResult.mConsumed = false;
// NOTE: If the aWindow is top level window of the composing window because
// when a window on deactive window gets focus, WM_IME_SETCONTEXT (wParam is
// TRUE) is sent to the top level window first. After that,
// WM_IME_SETCONTEXT (wParam is FALSE) is sent to the top level window.
// Finally, WM_IME_SETCONTEXT (wParam is TRUE) is sent to the focused window.
// The top level window never becomes composing window, so, we can ignore
// the WM_IME_SETCONTEXT on the top level window.
if (IsTopLevelWindowOfComposition(aWindow)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMESetContext, hWnd=%08x is top level window\n"));
return true;
}
// When IME context is activating on another window,
// we should commit the old composition on the old window.
bool cancelComposition = false;
if (wParam && gIMM32Handler) {
cancelComposition =
gIMM32Handler->CommitCompositionOnPreviousWindow(aWindow);
}
if (wParam && (lParam & ISC_SHOWUICOMPOSITIONWINDOW) &&
ShouldDrawCompositionStringOurselves()) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMESetContext, ISC_SHOWUICOMPOSITIONWINDOW is removed\n"));
lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
}
// We should sent WM_IME_SETCONTEXT to the DefWndProc here because the
// ancestor windows shouldn't receive this message. If they receive the
// message, we cannot know whether which window is the target of the message.
aResult.mResult = ::DefWindowProc(aWindow->GetWindowHandle(),
WM_IME_SETCONTEXT, wParam, lParam);
// Cancel composition on the new window if we committed our composition on
// another window.
if (cancelComposition) {
CancelComposition(aWindow, true);
}
aResult.mConsumed = true;
return true;
}
bool
nsIMM32Handler::OnChar(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
// The return value must be same as aResult.mConsumed because only when we
// consume the message, the caller shouldn't do anything anymore but
// otherwise, the caller should handle the message.
aResult.mConsumed = false;
if (IsIMECharRecordsEmpty()) {
return aResult.mConsumed;
}
WPARAM recWParam;
LPARAM recLParam;
DequeueIMECharRecords(recWParam, recLParam);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnChar, aWindow=%p, wParam=%08x, lParam=%08x,\n",
aWindow->GetWindowHandle(), wParam, lParam));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
(" recorded: wParam=%08x, lParam=%08x\n",
recWParam, recLParam));
// If an unexpected char message comes, we should reset the records,
// of course, this shouldn't happen.
if (recWParam != wParam || recLParam != lParam) {
ResetIMECharRecords();
return aResult.mConsumed;
}
// Eat the char message which is caused by WM_IME_CHAR because we should
// have processed the IME messages, so, this message could be come from
// a windowless plug-in.
aResult.mConsumed = true;
return aResult.mConsumed;
}
/****************************************************************************
* message handlers for plug-in
****************************************************************************/
bool
nsIMM32Handler::OnIMEStartCompositionOnPlugin(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEStartCompositionOnPlugin, hWnd=%08x, mIsComposingOnPlugin=%s\n",
aWindow->GetWindowHandle(), mIsComposingOnPlugin ? "TRUE" : "FALSE"));
mIsComposingOnPlugin = true;
mComposingWindow = aWindow;
nsIMEContext IMEContext(aWindow->GetWindowHandle());
SetIMERelatedWindowsPosOnPlugin(aWindow, IMEContext);
aResult.mConsumed =
aWindow->DispatchPluginEvent(WM_IME_STARTCOMPOSITION, wParam, lParam,
false);
return true;
}
bool
nsIMM32Handler::OnIMECompositionOnPlugin(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMECompositionOnPlugin, hWnd=%08x, lParam=%08x, mIsComposingOnPlugin=%s\n",
aWindow->GetWindowHandle(), lParam,
mIsComposingOnPlugin ? "TRUE" : "FALSE"));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMECompositionOnPlugin, GCS_RESULTSTR=%s, GCS_COMPSTR=%s, GCS_COMPATTR=%s, GCS_COMPCLAUSE=%s, GCS_CURSORPOS=%s\n",
lParam & GCS_RESULTSTR ? "YES" : "no",
lParam & GCS_COMPSTR ? "YES" : "no",
lParam & GCS_COMPATTR ? "YES" : "no",
lParam & GCS_COMPCLAUSE ? "YES" : "no",
lParam & GCS_CURSORPOS ? "YES" : "no"));
// We should end composition if there is a committed string.
if (IS_COMMITTING_LPARAM(lParam)) {
mIsComposingOnPlugin = false;
mComposingWindow = nullptr;
}
// Continue composition if there is still a string being composed.
if (IS_COMPOSING_LPARAM(lParam)) {
mIsComposingOnPlugin = true;
mComposingWindow = aWindow;
nsIMEContext IMEContext(aWindow->GetWindowHandle());
SetIMERelatedWindowsPosOnPlugin(aWindow, IMEContext);
}
aResult.mConsumed =
aWindow->DispatchPluginEvent(WM_IME_COMPOSITION, wParam, lParam, true);
return true;
}
bool
nsIMM32Handler::OnIMEEndCompositionOnPlugin(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMEEndCompositionOnPlugin, hWnd=%08x, mIsComposingOnPlugin=%s\n",
aWindow->GetWindowHandle(), mIsComposingOnPlugin ? "TRUE" : "FALSE"));
mIsComposingOnPlugin = false;
mComposingWindow = nullptr;
if (mNativeCaretIsCreated) {
::DestroyCaret();
mNativeCaretIsCreated = false;
}
aResult.mConsumed =
aWindow->DispatchPluginEvent(WM_IME_ENDCOMPOSITION, wParam, lParam,
false);
return true;
}
bool
nsIMM32Handler::OnIMECharOnPlugin(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMECharOnPlugin, hWnd=%08x, char=%08x, scancode=%08x\n",
aWindow->GetWindowHandle(), wParam, lParam));
aResult.mConsumed =
aWindow->DispatchPluginEvent(WM_IME_CHAR, wParam, lParam, true);
if (!aResult.mConsumed) {
// Record the WM_CHAR messages which are going to be coming.
EnsureHandlerInstance();
EnqueueIMECharRecords(wParam, lParam);
}
return true;
}
/* static */ bool
nsIMM32Handler::OnIMESetContextOnPlugin(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnIMESetContextOnPlugin, hWnd=%08x, %s, lParam=%08x\n",
aWindow->GetWindowHandle(), wParam ? "Active" : "Deactive", lParam));
// If the IME context becomes active on a plug-in, we should commit
// our composition. And also we should cancel the composition on new
// window. Note that if IsTopLevelWindowOfComposition(aWindow) returns
// true, we should ignore the message here, see the comment in
// OnIMESetContext() for the detail.
if (wParam && gIMM32Handler && !IsTopLevelWindowOfComposition(aWindow)) {
if (gIMM32Handler->CommitCompositionOnPreviousWindow(aWindow)) {
CancelComposition(aWindow);
}
}
// Dispatch message to the plug-in.
// XXX When a windowless plug-in gets focus, we should send
// WM_IME_SETCONTEXT
aWindow->DispatchPluginEvent(WM_IME_SETCONTEXT, wParam, lParam, false);
// We should send WM_IME_SETCONTEXT to the DefWndProc here. It shouldn't
// be received on ancestor windows, see OnIMESetContext() for the detail.
aResult.mResult = ::DefWindowProc(aWindow->GetWindowHandle(),
WM_IME_SETCONTEXT, wParam, lParam);
// Don't synchronously dispatch the pending events when we receive
// WM_IME_SETCONTEXT because we get it during plugin destruction.
// (bug 491848)
aResult.mConsumed = true;
return true;
}
bool
nsIMM32Handler::OnCharOnPlugin(nsWindow* aWindow,
WPARAM wParam,
LPARAM lParam,
MSGResult& aResult)
{
// We should never consume char message on windowless plugin.
aResult.mConsumed = false;
if (IsIMECharRecordsEmpty()) {
return false;
}
WPARAM recWParam;
LPARAM recLParam;
DequeueIMECharRecords(recWParam, recLParam);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnCharOnPlugin, aWindow=%p, wParam=%08x, lParam=%08x,\n",
aWindow->GetWindowHandle(), wParam, lParam));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
(" recorded: wParam=%08x, lParam=%08x\n",
recWParam, recLParam));
// If an unexpected char message comes, we should reset the records,
// of course, this shouldn't happen.
if (recWParam != wParam || recLParam != lParam) {
ResetIMECharRecords();
}
// WM_CHAR on plug-in is always handled by nsWindow.
return false;
}
/****************************************************************************
* others
****************************************************************************/
void
nsIMM32Handler::HandleStartComposition(nsWindow* aWindow,
const nsIMEContext &aIMEContext)
{
NS_PRECONDITION(!mIsComposing,
"HandleStartComposition is called but mIsComposing is TRUE");
NS_PRECONDITION(!aWindow->PluginHasFocus(),
"HandleStartComposition should not be called when a plug-in has focus");
WidgetQueryContentEvent selection(true, NS_QUERY_SELECTED_TEXT, aWindow);
nsIntPoint point(0, 0);
aWindow->InitEvent(selection, &point);
aWindow->DispatchWindowEvent(&selection);
if (!selection.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleStartComposition, FAILED (NS_QUERY_SELECTED_TEXT)\n"));
return;
}
mCompositionStart = selection.mReply.mOffset;
mLastDispatchedCompositionString.Truncate();
WidgetCompositionEvent event(true, NS_COMPOSITION_START, aWindow);
aWindow->InitEvent(event, &point);
aWindow->DispatchWindowEvent(&event);
mIsComposing = true;
mComposingWindow = aWindow;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleStartComposition, START composition, mCompositionStart=%ld\n",
mCompositionStart));
}
bool
nsIMM32Handler::HandleComposition(nsWindow* aWindow,
const nsIMEContext &aIMEContext,
LPARAM lParam)
{
NS_PRECONDITION(!aWindow->PluginHasFocus(),
"HandleComposition should not be called when a plug-in has focus");
// for bug #60050
// MS-IME 95/97/98/2000 may send WM_IME_COMPOSITION with non-conversion
// mode before it send WM_IME_STARTCOMPOSITION.
// However, ATOK sends a WM_IME_COMPOSITION before WM_IME_STARTCOMPOSITION,
// and if we access ATOK via some APIs, ATOK will sometimes fail to
// initialize its state. If WM_IME_STARTCOMPOSITION is already in the
// message queue, we should ignore the strange WM_IME_COMPOSITION message and
// skip to the next. So, we should look for next composition message
// (WM_IME_STARTCOMPOSITION or WM_IME_ENDCOMPOSITION or WM_IME_COMPOSITION),
// and if it's WM_IME_STARTCOMPOSITION, and one more next composition message
// is WM_IME_COMPOSITION, current IME is ATOK, probably. Otherwise, we
// should start composition forcibly.
if (!mIsComposing) {
MSG msg1, msg2;
HWND wnd = aWindow->GetWindowHandle();
if (WinUtils::PeekMessage(&msg1, wnd, WM_IME_STARTCOMPOSITION,
WM_IME_COMPOSITION, PM_NOREMOVE) &&
msg1.message == WM_IME_STARTCOMPOSITION &&
WinUtils::PeekMessage(&msg2, wnd, WM_IME_ENDCOMPOSITION,
WM_IME_COMPOSITION, PM_NOREMOVE) &&
msg2.message == WM_IME_COMPOSITION) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, Ignores due to find a WM_IME_STARTCOMPOSITION\n"));
return ShouldDrawCompositionStringOurselves();
}
}
bool startCompositionMessageHasBeenSent = mIsComposing;
//
// This catches a fixed result
//
if (IS_COMMITTING_LPARAM(lParam)) {
if (!mIsComposing) {
HandleStartComposition(aWindow, aIMEContext);
}
GetCompositionString(aIMEContext, GCS_RESULTSTR);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_RESULTSTR\n"));
DispatchCompositionChangeEvent(aWindow, aIMEContext, false);
HandleEndComposition(aWindow);
if (!IS_COMPOSING_LPARAM(lParam)) {
return ShouldDrawCompositionStringOurselves();
}
}
//
// This provides us with a composition string
//
if (!mIsComposing) {
HandleStartComposition(aWindow, aIMEContext);
}
//--------------------------------------------------------
// 1. Get GCS_COMPSTR
//--------------------------------------------------------
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_COMPSTR\n"));
GetCompositionString(aIMEContext, GCS_COMPSTR);
if (!IS_COMPOSING_LPARAM(lParam)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, lParam doesn't indicate composing, "
"mCompositionString=\"%s\", mLastDispatchedCompositionString=\"%s\"",
NS_ConvertUTF16toUTF8(mCompositionString).get(),
NS_ConvertUTF16toUTF8(mLastDispatchedCompositionString).get()));
// If composition string isn't changed, we can trust the lParam.
// So, we need to do nothing.
if (mLastDispatchedCompositionString == mCompositionString) {
return ShouldDrawCompositionStringOurselves();
}
// IME may send WM_IME_COMPOSITION without composing lParam values
// when composition string becomes empty (e.g., using Backspace key).
// If composition string is empty, we should dispatch a compositionchange
// event with empty string.
if (mCompositionString.IsEmpty()) {
DispatchCompositionChangeEvent(aWindow, aIMEContext, false);
return ShouldDrawCompositionStringOurselves();
}
// Otherwise, we cannot trust the lParam value. We might need to
// dispatch compositionchange event with the latest composition string
// information.
}
// See https://bugzilla.mozilla.org/show_bug.cgi?id=296339
if (mCompositionString.IsEmpty() && !startCompositionMessageHasBeenSent) {
// In this case, maybe, the sender is MSPinYin. That sends *only*
// WM_IME_COMPOSITION with GCS_COMP* and GCS_RESULT* when
// user inputted the Chinese full stop. So, that doesn't send
// WM_IME_STARTCOMPOSITION and WM_IME_ENDCOMPOSITION.
// If WM_IME_STARTCOMPOSITION was not sent and the composition
// string is null (it indicates the composition transaction ended),
// WM_IME_ENDCOMPOSITION may not be sent. If so, we cannot run
// HandleEndComposition() in other place.
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, Aborting GCS_COMPSTR\n"));
HandleEndComposition(aWindow);
return IS_COMMITTING_LPARAM(lParam);
}
//--------------------------------------------------------
// 2. Get GCS_COMPCLAUSE
//--------------------------------------------------------
long clauseArrayLength =
::ImmGetCompositionStringW(aIMEContext.get(), GCS_COMPCLAUSE, nullptr, 0);
clauseArrayLength /= sizeof(uint32_t);
if (clauseArrayLength > 0) {
nsresult rv = EnsureClauseArray(clauseArrayLength);
NS_ENSURE_SUCCESS(rv, false);
// Intelligent ABC IME (Simplified Chinese IME, the code page is 936)
// will crash in ImmGetCompositionStringW for GCS_COMPCLAUSE (bug 424663).
// See comment 35 of the bug for the detail. Therefore, we should use A
// API for it, however, we should not kill Unicode support on all IMEs.
bool useA_API = !(sIMEProperty & IME_PROP_UNICODE);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_COMPCLAUSE, useA_API=%s\n",
useA_API ? "TRUE" : "FALSE"));
long clauseArrayLength2 =
useA_API ?
::ImmGetCompositionStringA(aIMEContext.get(), GCS_COMPCLAUSE,
mClauseArray.Elements(),
mClauseArray.Capacity() * sizeof(uint32_t)) :
::ImmGetCompositionStringW(aIMEContext.get(), GCS_COMPCLAUSE,
mClauseArray.Elements(),
mClauseArray.Capacity() * sizeof(uint32_t));
clauseArrayLength2 /= sizeof(uint32_t);
if (clauseArrayLength != clauseArrayLength2) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_COMPCLAUSE, clauseArrayLength=%ld but clauseArrayLength2=%ld\n",
clauseArrayLength, clauseArrayLength2));
if (clauseArrayLength > clauseArrayLength2)
clauseArrayLength = clauseArrayLength2;
}
if (useA_API) {
// Convert each values of sIMECompClauseArray. The values mean offset of
// the clauses in ANSI string. But we need the values in Unicode string.
nsAutoCString compANSIStr;
if (ConvertToANSIString(mCompositionString, GetKeyboardCodePage(),
compANSIStr)) {
uint32_t maxlen = compANSIStr.Length();
mClauseArray[0] = 0; // first value must be 0
for (int32_t i = 1; i < clauseArrayLength; i++) {
uint32_t len = std::min(mClauseArray[i], maxlen);
mClauseArray[i] = ::MultiByteToWideChar(GetKeyboardCodePage(),
MB_PRECOMPOSED,
(LPCSTR)compANSIStr.get(),
len, nullptr, 0);
}
}
}
}
// compClauseArrayLength may be negative. I.e., ImmGetCompositionStringW
// may return an error code.
mClauseArray.SetLength(std::max<long>(0, clauseArrayLength));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_COMPCLAUSE, mClauseLength=%ld\n",
mClauseArray.Length()));
//--------------------------------------------------------
// 3. Get GCS_COMPATTR
//--------------------------------------------------------
// This provides us with the attribute string necessary
// for doing hiliting
long attrArrayLength =
::ImmGetCompositionStringW(aIMEContext.get(), GCS_COMPATTR, nullptr, 0);
attrArrayLength /= sizeof(uint8_t);
if (attrArrayLength > 0) {
nsresult rv = EnsureAttributeArray(attrArrayLength);
NS_ENSURE_SUCCESS(rv, false);
attrArrayLength =
::ImmGetCompositionStringW(aIMEContext.get(), GCS_COMPATTR,
mAttributeArray.Elements(),
mAttributeArray.Capacity() * sizeof(uint8_t));
}
// attrStrLen may be negative. I.e., ImmGetCompositionStringW may return an
// error code.
mAttributeArray.SetLength(std::max<long>(0, attrArrayLength));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_COMPATTR, mAttributeLength=%ld\n",
mAttributeArray.Length()));
//--------------------------------------------------------
// 4. Get GCS_CURSOPOS
//--------------------------------------------------------
// Some IMEs (e.g., the standard IME for Korean) don't have caret position.
if (lParam & GCS_CURSORPOS) {
mCursorPosition =
::ImmGetCompositionStringW(aIMEContext.get(), GCS_CURSORPOS, nullptr, 0);
if (mCursorPosition < 0) {
mCursorPosition = NO_IME_CARET; // The result is error
}
} else {
mCursorPosition = NO_IME_CARET;
}
NS_ASSERTION(mCursorPosition <= (long)mCompositionString.Length(),
"illegal pos");
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleComposition, GCS_CURSORPOS, mCursorPosition=%d\n",
mCursorPosition));
//--------------------------------------------------------
// 5. Send the compositionchange event
//--------------------------------------------------------
DispatchCompositionChangeEvent(aWindow, aIMEContext);
return ShouldDrawCompositionStringOurselves();
}
void
nsIMM32Handler::HandleEndComposition(nsWindow* aWindow)
{
NS_PRECONDITION(mIsComposing,
"HandleEndComposition is called but mIsComposing is FALSE");
NS_PRECONDITION(!aWindow->PluginHasFocus(),
"HandleComposition should not be called when a plug-in has focus");
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleEndComposition\n"));
WidgetCompositionEvent event(true, NS_COMPOSITION_END, aWindow);
nsIntPoint point(0, 0);
if (mNativeCaretIsCreated) {
::DestroyCaret();
mNativeCaretIsCreated = false;
}
aWindow->InitEvent(event, &point);
// The last dispatched composition string must be the committed string.
event.mData = mLastDispatchedCompositionString;
aWindow->DispatchWindowEvent(&event);
mIsComposing = false;
mComposingWindow = nullptr;
mLastDispatchedCompositionString.Truncate();
}
static void
DumpReconvertString(RECONVERTSTRING* aReconv)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
(" dwSize=%ld, dwVersion=%ld, dwStrLen=%ld, dwStrOffset=%ld\n",
aReconv->dwSize, aReconv->dwVersion,
aReconv->dwStrLen, aReconv->dwStrOffset));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
(" dwCompStrLen=%ld, dwCompStrOffset=%ld, dwTargetStrLen=%ld, dwTargetStrOffset=%ld\n",
aReconv->dwCompStrLen, aReconv->dwCompStrOffset,
aReconv->dwTargetStrLen, aReconv->dwTargetStrOffset));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
(" result str=\"%s\"\n",
NS_ConvertUTF16toUTF8(
nsAutoString((char16_t*)((char*)(aReconv) + aReconv->dwStrOffset),
aReconv->dwStrLen)).get()));
}
bool
nsIMM32Handler::HandleReconvert(nsWindow* aWindow,
LPARAM lParam,
LRESULT *oResult)
{
*oResult = 0;
RECONVERTSTRING* pReconv = reinterpret_cast<RECONVERTSTRING*>(lParam);
WidgetQueryContentEvent selection(true, NS_QUERY_SELECTED_TEXT, aWindow);
nsIntPoint point(0, 0);
aWindow->InitEvent(selection, &point);
aWindow->DispatchWindowEvent(&selection);
if (!selection.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, FAILED (NS_QUERY_SELECTED_TEXT)\n"));
return false;
}
uint32_t len = selection.mReply.mString.Length();
uint32_t needSize = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR);
if (!pReconv) {
// Return need size to reconvert.
if (len == 0) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, There are not selected text\n"));
return false;
}
*oResult = needSize;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, SUCCEEDED result=%ld\n",
*oResult));
return true;
}
if (pReconv->dwSize < needSize) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, FAILED pReconv->dwSize=%ld, needSize=%ld\n",
pReconv->dwSize, needSize));
return false;
}
*oResult = needSize;
// Fill reconvert struct
pReconv->dwVersion = 0;
pReconv->dwStrLen = len;
pReconv->dwStrOffset = sizeof(RECONVERTSTRING);
pReconv->dwCompStrLen = len;
pReconv->dwCompStrOffset = 0;
pReconv->dwTargetStrLen = len;
pReconv->dwTargetStrOffset = 0;
::CopyMemory(reinterpret_cast<LPVOID>(lParam + sizeof(RECONVERTSTRING)),
selection.mReply.mString.get(), len * sizeof(WCHAR));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, SUCCEEDED result=%ld\n",
*oResult));
DumpReconvertString(pReconv);
return true;
}
bool
nsIMM32Handler::HandleQueryCharPosition(nsWindow* aWindow,
LPARAM lParam,
LRESULT *oResult)
{
uint32_t len = mIsComposing ? mCompositionString.Length() : 0;
*oResult = false;
IMECHARPOSITION* pCharPosition = reinterpret_cast<IMECHARPOSITION*>(lParam);
if (!pCharPosition) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleQueryCharPosition, FAILED (pCharPosition is null)\n"));
return false;
}
if (pCharPosition->dwSize < sizeof(IMECHARPOSITION)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, FAILED, pCharPosition->dwSize=%ld, sizeof(IMECHARPOSITION)=%ld\n",
pCharPosition->dwSize, sizeof(IMECHARPOSITION)));
return false;
}
if (::GetFocus() != aWindow->GetWindowHandle()) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleReconvert, FAILED, ::GetFocus()=%08x, OurWindowHandle=%08x\n",
::GetFocus(), aWindow->GetWindowHandle()));
return false;
}
if (pCharPosition->dwCharPos > len) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleQueryCharPosition, FAILED, pCharPosition->dwCharPos=%ld, len=%ld\n",
pCharPosition->dwCharPos, len));
return false;
}
nsIntRect r;
bool ret =
GetCharacterRectOfSelectedTextAt(aWindow, pCharPosition->dwCharPos, r);
NS_ENSURE_TRUE(ret, false);
nsIntRect screenRect;
// We always need top level window that is owner window of the popup window
// even if the content of the popup window has focus.
ResolveIMECaretPos(aWindow->GetTopLevelWindow(false),
r, nullptr, screenRect);
pCharPosition->pt.x = screenRect.x;
pCharPosition->pt.y = screenRect.y;
pCharPosition->cLineHeight = r.height;
// XXX we should use NS_QUERY_EDITOR_RECT event here.
::GetWindowRect(aWindow->GetWindowHandle(), &pCharPosition->rcDocument);
*oResult = TRUE;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleQueryCharPosition, SUCCEEDED\n"));
return true;
}
bool
nsIMM32Handler::HandleDocumentFeed(nsWindow* aWindow,
LPARAM lParam,
LRESULT *oResult)
{
*oResult = 0;
RECONVERTSTRING* pReconv = reinterpret_cast<RECONVERTSTRING*>(lParam);
nsIntPoint point(0, 0);
bool hasCompositionString =
mIsComposing && ShouldDrawCompositionStringOurselves();
int32_t targetOffset, targetLength;
if (!hasCompositionString) {
WidgetQueryContentEvent selection(true, NS_QUERY_SELECTED_TEXT, aWindow);
aWindow->InitEvent(selection, &point);
aWindow->DispatchWindowEvent(&selection);
if (!selection.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, FAILED (NS_QUERY_SELECTED_TEXT)\n"));
return false;
}
targetOffset = int32_t(selection.mReply.mOffset);
targetLength = int32_t(selection.mReply.mString.Length());
} else {
targetOffset = int32_t(mCompositionStart);
targetLength = int32_t(mCompositionString.Length());
}
// XXX nsString::Find and nsString::RFind take int32_t for offset, so,
// we cannot support this message when the current offset is larger than
// INT32_MAX.
if (targetOffset < 0 || targetLength < 0 ||
targetOffset + targetLength < 0) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, FAILED (The selection is out of range)\n"));
return false;
}
// Get all contents of the focused editor.
WidgetQueryContentEvent textContent(true, NS_QUERY_TEXT_CONTENT, aWindow);
textContent.InitForQueryTextContent(0, UINT32_MAX);
aWindow->InitEvent(textContent, &point);
aWindow->DispatchWindowEvent(&textContent);
if (!textContent.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, FAILED (NS_QUERY_TEXT_CONTENT)\n"));
return false;
}
nsAutoString str(textContent.mReply.mString);
if (targetOffset > int32_t(str.Length())) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, FAILED (The caret offset is invalid)\n"));
return false;
}
// Get the focused paragraph, we decide that it starts from the previous CRLF
// (or start of the editor) to the next one (or the end of the editor).
int32_t paragraphStart = str.RFind("\n", false, targetOffset, -1) + 1;
int32_t paragraphEnd =
str.Find("\r", false, targetOffset + targetLength, -1);
if (paragraphEnd < 0) {
paragraphEnd = str.Length();
}
nsDependentSubstring paragraph(str, paragraphStart,
paragraphEnd - paragraphStart);
uint32_t len = paragraph.Length();
uint32_t needSize = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR);
if (!pReconv) {
*oResult = needSize;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, SUCCEEDED result=%ld\n",
*oResult));
return true;
}
if (pReconv->dwSize < needSize) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, FAILED pReconv->dwSize=%ld, needSize=%ld\n",
pReconv->dwSize, needSize));
return false;
}
// Fill reconvert struct
pReconv->dwVersion = 0;
pReconv->dwStrLen = len;
pReconv->dwStrOffset = sizeof(RECONVERTSTRING);
if (hasCompositionString) {
pReconv->dwCompStrLen = targetLength;
pReconv->dwCompStrOffset =
(targetOffset - paragraphStart) * sizeof(WCHAR);
// Set composition target clause information
uint32_t offset, length;
if (!GetTargetClauseRange(&offset, &length)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, FAILED, by GetTargetClauseRange\n"));
return false;
}
pReconv->dwTargetStrLen = length;
pReconv->dwTargetStrOffset = (offset - paragraphStart) * sizeof(WCHAR);
} else {
pReconv->dwTargetStrLen = targetLength;
pReconv->dwTargetStrOffset =
(targetOffset - paragraphStart) * sizeof(WCHAR);
// There is no composition string, so, the length is zero but we should
// set the cursor offset to the composition str offset.
pReconv->dwCompStrLen = 0;
pReconv->dwCompStrOffset = pReconv->dwTargetStrOffset;
}
*oResult = needSize;
::CopyMemory(reinterpret_cast<LPVOID>(lParam + sizeof(RECONVERTSTRING)),
paragraph.BeginReading(), len * sizeof(WCHAR));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: HandleDocumentFeed, SUCCEEDED result=%ld\n",
*oResult));
DumpReconvertString(pReconv);
return true;
}
bool
nsIMM32Handler::CommitCompositionOnPreviousWindow(nsWindow* aWindow)
{
if (!mComposingWindow || mComposingWindow == aWindow) {
return false;
}
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CommitCompositionOnPreviousWindow, mIsComposing=%s, mIsComposingOnPlugin=%s\n",
mIsComposing ? "TRUE" : "FALSE", mIsComposingOnPlugin ? "TRUE" : "FALSE"));
// If we have composition, we should dispatch composition events internally.
if (mIsComposing) {
nsIMEContext IMEContext(mComposingWindow->GetWindowHandle());
NS_ASSERTION(IMEContext.IsValid(), "IME context must be valid");
DispatchCompositionChangeEvent(mComposingWindow, IMEContext, false);
HandleEndComposition(mComposingWindow);
return true;
}
// XXX When plug-in has composition, we should commit composition on the
// plug-in. However, we need some more work for that.
return mIsComposingOnPlugin;
}
static uint32_t
PlatformToNSAttr(uint8_t aAttr)
{
switch (aAttr)
{
case ATTR_INPUT_ERROR:
// case ATTR_FIXEDCONVERTED:
case ATTR_INPUT:
return NS_TEXTRANGE_RAWINPUT;
case ATTR_CONVERTED:
return NS_TEXTRANGE_CONVERTEDTEXT;
case ATTR_TARGET_NOTCONVERTED:
return NS_TEXTRANGE_SELECTEDRAWTEXT;
case ATTR_TARGET_CONVERTED:
return NS_TEXTRANGE_SELECTEDCONVERTEDTEXT;
default:
NS_ASSERTION(false, "unknown attribute");
return NS_TEXTRANGE_CARETPOSITION;
}
}
#ifdef PR_LOGGING
static const char*
GetRangeTypeName(uint32_t aRangeType)
{
switch (aRangeType) {
case NS_TEXTRANGE_RAWINPUT:
return "NS_TEXTRANGE_RAWINPUT";
case NS_TEXTRANGE_CONVERTEDTEXT:
return "NS_TEXTRANGE_CONVERTEDTEXT";
case NS_TEXTRANGE_SELECTEDRAWTEXT:
return "NS_TEXTRANGE_SELECTEDRAWTEXT";
case NS_TEXTRANGE_SELECTEDCONVERTEDTEXT:
return "NS_TEXTRANGE_SELECTEDCONVERTEDTEXT";
case NS_TEXTRANGE_CARETPOSITION:
return "NS_TEXTRANGE_CARETPOSITION";
default:
return "UNKNOWN SELECTION TYPE!!";
}
}
#endif
void
nsIMM32Handler::DispatchCompositionChangeEvent(nsWindow* aWindow,
const nsIMEContext &aIMEContext,
bool aCheckAttr)
{
NS_ASSERTION(mIsComposing, "conflict state");
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: DispatchCompositionChangeEvent, aCheckAttr=%s\n",
aCheckAttr ? "TRUE": "FALSE"));
// If we don't need to draw composition string ourselves and this is not
// commit event (i.e., under composing), we don't need to fire
// compositionchange event during composing.
if (aCheckAttr && !ShouldDrawCompositionStringOurselves()) {
// But we need to adjust composition window pos and native caret pos, here.
SetIMERelatedWindowsPos(aWindow, aIMEContext);
return;
}
nsRefPtr<nsWindow> kungFuDeathGrip(aWindow);
nsIntPoint point(0, 0);
WidgetCompositionEvent event(true, NS_COMPOSITION_CHANGE, aWindow);
aWindow->InitEvent(event, &point);
if (aCheckAttr) {
event.mRanges = CreateTextRangeArray();
}
event.mData = mLastDispatchedCompositionString = mCompositionString;
aWindow->DispatchWindowEvent(&event);
// Calling SetIMERelatedWindowsPos will be failure on e10s at this point.
// compositionchange event will notify NOTIFY_IME_OF_COMPOSITION_UPDATE, then
// it will call SetIMERelatedWindowsPos.
}
already_AddRefed<TextRangeArray>
nsIMM32Handler::CreateTextRangeArray()
{
// Sogou (Simplified Chinese IME) returns contradictory values: The cursor
// position is actual cursor position. However, other values (composition
// string and attributes) are empty. So, if you want to remove following
// assertion, be careful.
NS_ASSERTION(ShouldDrawCompositionStringOurselves(),
"CreateTextRangeArray is called when we don't need to fire "
"compositionchange event");
nsRefPtr<TextRangeArray> textRangeArray = new TextRangeArray();
TextRange range;
if (mClauseArray.Length() == 0) {
// Some IMEs don't return clause array information, then, we assume that
// all characters in the composition string are in one clause.
range.mStartOffset = 0;
range.mEndOffset = mCompositionString.Length();
range.mRangeType = NS_TEXTRANGE_RAWINPUT;
textRangeArray->AppendElement(range);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CreateTextRangeArray, mClauseLength=0\n"));
} else {
// iterate over the attributes
uint32_t lastOffset = 0;
for (uint32_t i = 0; i < mClauseArray.Length() - 1; i++) {
uint32_t current = mClauseArray[i + 1];
if (current > mCompositionString.Length()) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CreateTextRangeArray, mClauseArray[%ld]=%lu. "
"This is larger than mCompositionString.Length()=%lu\n",
i + 1, current, mCompositionString.Length()));
current = int32_t(mCompositionString.Length());
}
range.mRangeType = PlatformToNSAttr(mAttributeArray[lastOffset]);
range.mStartOffset = lastOffset;
range.mEndOffset = current;
textRangeArray->AppendElement(range);
lastOffset = current;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CreateTextRangeArray, index=%ld, rangeType=%s, range=[%lu-%lu]\n",
i, GetRangeTypeName(range.mRangeType), range.mStartOffset,
range.mEndOffset));
}
}
if (mCursorPosition == NO_IME_CARET) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CreateTextRangeArray, no caret\n"));
return textRangeArray.forget();
}
int32_t cursor = mCursorPosition;
if (uint32_t(cursor) > mCompositionString.Length()) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CreateTextRangeArray, mCursorPosition=%ld. "
"This is larger than mCompositionString.Length()=%lu\n",
mCursorPosition, mCompositionString.Length()));
cursor = mCompositionString.Length();
}
range.mStartOffset = range.mEndOffset = cursor;
range.mRangeType = NS_TEXTRANGE_CARETPOSITION;
textRangeArray->AppendElement(range);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: CreateTextRangeArray, caret position=%ld\n",
range.mStartOffset));
return textRangeArray.forget();
}
void
nsIMM32Handler::GetCompositionString(const nsIMEContext &aIMEContext,
DWORD aIndex)
{
// Retrieve the size of the required output buffer.
long lRtn = ::ImmGetCompositionStringW(aIMEContext.get(), aIndex, nullptr, 0);
if (lRtn < 0 ||
!mCompositionString.SetLength((lRtn / sizeof(WCHAR)) + 1, mozilla::fallible_t())) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCompositionString, FAILED by OOM\n"));
return; // Error or out of memory.
}
// Actually retrieve the composition string information.
lRtn = ::ImmGetCompositionStringW(aIMEContext.get(), aIndex,
(LPVOID)mCompositionString.BeginWriting(),
lRtn + sizeof(WCHAR));
mCompositionString.SetLength(lRtn / sizeof(WCHAR));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCompositionString, SUCCEEDED mCompositionString=\"%s\"\n",
NS_ConvertUTF16toUTF8(mCompositionString).get()));
}
bool
nsIMM32Handler::GetTargetClauseRange(uint32_t *aOffset, uint32_t *aLength)
{
NS_ENSURE_TRUE(aOffset, false);
NS_ENSURE_TRUE(mIsComposing, false);
NS_ENSURE_TRUE(ShouldDrawCompositionStringOurselves(), false);
bool found = false;
*aOffset = mCompositionStart;
for (uint32_t i = 0; i < mAttributeArray.Length(); i++) {
if (mAttributeArray[i] == ATTR_TARGET_NOTCONVERTED ||
mAttributeArray[i] == ATTR_TARGET_CONVERTED) {
*aOffset = mCompositionStart + i;
found = true;
break;
}
}
if (!aLength) {
return true;
}
if (!found) {
// The all composition string is targetted when there is no ATTR_TARGET_*
// clause. E.g., there is only ATTR_INPUT
*aLength = mCompositionString.Length();
return true;
}
uint32_t offsetInComposition = *aOffset - mCompositionStart;
*aLength = mCompositionString.Length() - offsetInComposition;
for (uint32_t i = offsetInComposition; i < mAttributeArray.Length(); i++) {
if (mAttributeArray[i] != ATTR_TARGET_NOTCONVERTED &&
mAttributeArray[i] != ATTR_TARGET_CONVERTED) {
*aLength = i - offsetInComposition;
break;
}
}
return true;
}
bool
nsIMM32Handler::ConvertToANSIString(const nsAFlatString& aStr, UINT aCodePage,
nsACString& aANSIStr)
{
int len = ::WideCharToMultiByte(aCodePage, 0,
(LPCWSTR)aStr.get(), aStr.Length(),
nullptr, 0, nullptr, nullptr);
NS_ENSURE_TRUE(len >= 0, false);
if (!aANSIStr.SetLength(len, mozilla::fallible_t())) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: ConvertToANSIString, FAILED by OOM\n"));
return false;
}
::WideCharToMultiByte(aCodePage, 0, (LPCWSTR)aStr.get(), aStr.Length(),
(LPSTR)aANSIStr.BeginWriting(), len, nullptr, nullptr);
return true;
}
bool
nsIMM32Handler::GetCharacterRectOfSelectedTextAt(nsWindow* aWindow,
uint32_t aOffset,
nsIntRect &aCharRect)
{
nsIntPoint point(0, 0);
WidgetQueryContentEvent selection(true, NS_QUERY_SELECTED_TEXT, aWindow);
aWindow->InitEvent(selection, &point);
aWindow->DispatchWindowEvent(&selection);
if (!selection.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCharacterRectOfSelectedTextAt, aOffset=%lu, FAILED (NS_QUERY_SELECTED_TEXT)\n",
aOffset));
return false;
}
uint32_t offset = selection.mReply.mOffset + aOffset;
bool useCaretRect = selection.mReply.mString.IsEmpty();
if (useCaretRect && ShouldDrawCompositionStringOurselves() &&
mIsComposing && !mCompositionString.IsEmpty()) {
// There is not a normal selection, but we have composition string.
// XXX mnakano - Should we implement NS_QUERY_IME_SELECTED_TEXT?
useCaretRect = false;
if (mCursorPosition != NO_IME_CARET) {
uint32_t cursorPosition =
std::min<uint32_t>(mCursorPosition, mCompositionString.Length());
NS_ASSERTION(offset >= cursorPosition, "offset is less than cursorPosition!");
offset -= cursorPosition;
}
}
nsIntRect r;
if (!useCaretRect) {
WidgetQueryContentEvent charRect(true, NS_QUERY_TEXT_RECT, aWindow);
charRect.InitForQueryTextRect(offset, 1);
aWindow->InitEvent(charRect, &point);
aWindow->DispatchWindowEvent(&charRect);
if (charRect.mSucceeded) {
aCharRect = charRect.mReply.mRect;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCharacterRectOfSelectedTextAt, aOffset=%lu, SUCCEEDED\n",
aOffset));
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCharacterRectOfSelectedTextAt, aCharRect={ x: %ld, y: %ld, width: %ld, height: %ld }\n",
aCharRect.x, aCharRect.y, aCharRect.width, aCharRect.height));
return true;
}
}
return GetCaretRect(aWindow, aCharRect);
}
bool
nsIMM32Handler::GetCaretRect(nsWindow* aWindow, nsIntRect &aCaretRect)
{
nsIntPoint point(0, 0);
WidgetQueryContentEvent selection(true, NS_QUERY_SELECTED_TEXT, aWindow);
aWindow->InitEvent(selection, &point);
aWindow->DispatchWindowEvent(&selection);
if (!selection.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCaretRect, FAILED (NS_QUERY_SELECTED_TEXT)\n"));
return false;
}
uint32_t offset = selection.mReply.mOffset;
WidgetQueryContentEvent caretRect(true, NS_QUERY_CARET_RECT, aWindow);
caretRect.InitForQueryCaretRect(offset);
aWindow->InitEvent(caretRect, &point);
aWindow->DispatchWindowEvent(&caretRect);
if (!caretRect.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCaretRect, FAILED (NS_QUERY_CARET_RECT)\n"));
return false;
}
aCaretRect = caretRect.mReply.mRect;
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: GetCaretRect, SUCCEEDED, aCaretRect={ x: %ld, y: %ld, width: %ld, height: %ld }\n",
aCaretRect.x, aCaretRect.y, aCaretRect.width, aCaretRect.height));
return true;
}
bool
nsIMM32Handler::SetIMERelatedWindowsPos(nsWindow* aWindow,
const nsIMEContext &aIMEContext)
{
nsIntRect r;
// Get first character rect of current a normal selected text or a composing
// string.
bool ret = GetCharacterRectOfSelectedTextAt(aWindow, 0, r);
NS_ENSURE_TRUE(ret, false);
nsWindow* toplevelWindow = aWindow->GetTopLevelWindow(false);
nsIntRect firstSelectedCharRect;
ResolveIMECaretPos(toplevelWindow, r, aWindow, firstSelectedCharRect);
// Set native caret size/position to our caret. Some IMEs honor it. E.g.,
// "Intelligent ABC" (Simplified Chinese) and "MS PinYin 3.0" (Simplified
// Chinese) on XP.
nsIntRect caretRect(firstSelectedCharRect);
if (GetCaretRect(aWindow, r)) {
ResolveIMECaretPos(toplevelWindow, r, aWindow, caretRect);
} else {
NS_WARNING("failed to get caret rect");
caretRect.width = 1;
}
if (!mNativeCaretIsCreated) {
mNativeCaretIsCreated = ::CreateCaret(aWindow->GetWindowHandle(), nullptr,
caretRect.width, caretRect.height);
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: SetIMERelatedWindowsPos, mNativeCaretIsCreated=%s, width=%ld height=%ld\n",
mNativeCaretIsCreated ? "TRUE" : "FALSE",
caretRect.width, caretRect.height));
}
::SetCaretPos(caretRect.x, caretRect.y);
if (ShouldDrawCompositionStringOurselves()) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: SetIMERelatedWindowsPos, Set candidate window\n"));
// Get a rect of first character in current target in composition string.
if (mIsComposing && !mCompositionString.IsEmpty()) {
// If there are no targetted selection, we should use it's first character
// rect instead.
uint32_t offset;
if (!GetTargetClauseRange(&offset)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: SetIMERelatedWindowsPos, FAILED, by GetTargetClauseRange\n"));
return false;
}
ret = GetCharacterRectOfSelectedTextAt(aWindow,
offset - mCompositionStart, r);
NS_ENSURE_TRUE(ret, false);
} else {
// If there are no composition string, we should use a first character
// rect.
ret = GetCharacterRectOfSelectedTextAt(aWindow, 0, r);
NS_ENSURE_TRUE(ret, false);
}
nsIntRect firstTargetCharRect;
ResolveIMECaretPos(toplevelWindow, r, aWindow, firstTargetCharRect);
// Move the candidate window to first character position of the target.
CANDIDATEFORM candForm;
candForm.dwIndex = 0;
candForm.dwStyle = CFS_EXCLUDE;
candForm.ptCurrentPos.x = firstTargetCharRect.x;
candForm.ptCurrentPos.y = firstTargetCharRect.y;
candForm.rcArea.right = candForm.rcArea.left = candForm.ptCurrentPos.x;
candForm.rcArea.top = candForm.ptCurrentPos.y;
candForm.rcArea.bottom = candForm.ptCurrentPos.y +
firstTargetCharRect.height;
::ImmSetCandidateWindow(aIMEContext.get(), &candForm);
} else {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: SetIMERelatedWindowsPos, Set composition window\n"));
// Move the composition window to caret position (if selected some
// characters, we should use first character rect of them).
// And in this mode, IME adjusts the candidate window position
// automatically. So, we don't need to set it.
COMPOSITIONFORM compForm;
compForm.dwStyle = CFS_POINT;
compForm.ptCurrentPos.x = firstSelectedCharRect.x;
compForm.ptCurrentPos.y = firstSelectedCharRect.y;
::ImmSetCompositionWindow(aIMEContext.get(), &compForm);
}
return true;
}
void
nsIMM32Handler::SetIMERelatedWindowsPosOnPlugin(nsWindow* aWindow,
const nsIMEContext& aIMEContext)
{
WidgetQueryContentEvent editorRectEvent(true, NS_QUERY_EDITOR_RECT, aWindow);
aWindow->InitEvent(editorRectEvent);
aWindow->DispatchWindowEvent(&editorRectEvent);
if (!editorRectEvent.mSucceeded) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: SetIMERelatedWindowsPosOnPlugin, "
"FAILED (NS_QUERY_EDITOR_RECT)"));
return;
}
// Clip the plugin rect by the client rect of the window because composition
// window needs to be specified the position in the client area.
nsWindow* toplevelWindow = aWindow->GetTopLevelWindow(false);
nsIntRect pluginRectInScreen =
editorRectEvent.mReply.mRect + toplevelWindow->WidgetToScreenOffset();
nsIntRect winRectInScreen;
aWindow->GetClientBounds(winRectInScreen);
// composition window cannot be positioned on the edge of client area.
winRectInScreen.width--;
winRectInScreen.height--;
nsIntRect clippedPluginRect;
clippedPluginRect.x =
std::min(std::max(pluginRectInScreen.x, winRectInScreen.x),
winRectInScreen.XMost());
clippedPluginRect.y =
std::min(std::max(pluginRectInScreen.y, winRectInScreen.y),
winRectInScreen.YMost());
int32_t xMost = std::min(pluginRectInScreen.XMost(), winRectInScreen.XMost());
int32_t yMost = std::min(pluginRectInScreen.YMost(), winRectInScreen.YMost());
clippedPluginRect.width = std::max(0, xMost - clippedPluginRect.x);
clippedPluginRect.height = std::max(0, yMost - clippedPluginRect.y);
clippedPluginRect -= aWindow->WidgetToScreenOffset();
// Cover the plugin with native caret. This prevents IME's window and plugin
// overlap.
if (mNativeCaretIsCreated) {
::DestroyCaret();
}
mNativeCaretIsCreated =
::CreateCaret(aWindow->GetWindowHandle(), nullptr,
clippedPluginRect.width, clippedPluginRect.height);
::SetCaretPos(clippedPluginRect.x, clippedPluginRect.y);
// Set the composition window to bottom-left of the clipped plugin.
// As far as we know, there is no IME for RTL language. Therefore, this code
// must not need to take care of RTL environment.
COMPOSITIONFORM compForm;
compForm.dwStyle = CFS_POINT;
compForm.ptCurrentPos.x = clippedPluginRect.BottomLeft().x;
compForm.ptCurrentPos.y = clippedPluginRect.BottomLeft().y;
if (!::ImmSetCompositionWindow(aIMEContext.get(), &compForm)) {
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: SetIMERelatedWindowsPosOnPlugin, "
"FAILED to set composition window"));
return;
}
}
void
nsIMM32Handler::ResolveIMECaretPos(nsIWidget* aReferenceWidget,
nsIntRect& aCursorRect,
nsIWidget* aNewOriginWidget,
nsIntRect& aOutRect)
{
aOutRect = aCursorRect;
if (aReferenceWidget == aNewOriginWidget)
return;
if (aReferenceWidget)
aOutRect.MoveBy(aReferenceWidget->WidgetToScreenOffset());
if (aNewOriginWidget)
aOutRect.MoveBy(-aNewOriginWidget->WidgetToScreenOffset());
}
/* static */ nsresult
nsIMM32Handler::OnMouseButtonEvent(nsWindow* aWindow,
const IMENotification& aIMENotification)
{
// We don't need to create the instance of the handler here.
if (!gIMM32Handler) {
return NS_OK;
}
if (!sWM_MSIME_MOUSE || !IsComposingOnOurEditor() ||
!ShouldDrawCompositionStringOurselves()) {
return NS_OK;
}
// We need to handle only mousedown event.
if (aIMENotification.mMouseButtonEventData.mEventMessage !=
NS_MOUSE_BUTTON_DOWN) {
return NS_OK;
}
// If the character under the cursor is not in the composition string,
// we don't need to notify IME of it.
uint32_t compositionStart = gIMM32Handler->mCompositionStart;
uint32_t compositionEnd =
compositionStart + gIMM32Handler->mCompositionString.Length();
if (aIMENotification.mMouseButtonEventData.mOffset < compositionStart ||
aIMENotification.mMouseButtonEventData.mOffset >= compositionEnd) {
return NS_OK;
}
BYTE button;
switch (aIMENotification.mMouseButtonEventData.mButton) {
case WidgetMouseEventBase::eLeftButton:
button = IMEMOUSE_LDOWN;
break;
case WidgetMouseEventBase::eMiddleButton:
button = IMEMOUSE_MDOWN;
break;
case WidgetMouseEventBase::eRightButton:
button = IMEMOUSE_RDOWN;
break;
default:
return NS_OK;
}
// calcurate positioning and offset
// char : JCH1|JCH2|JCH3
// offset: 0011 1122 2233
// positioning: 2301 2301 2301
nsIntPoint cursorPos =
aIMENotification.mMouseButtonEventData.mCursorPos.AsIntPoint();
nsIntRect charRect =
aIMENotification.mMouseButtonEventData.mCharRect.AsIntRect();
int32_t cursorXInChar = cursorPos.x - charRect.x;
// The event might hit to zero-width character, see bug 694913.
// The reason might be:
// * There are some zero-width characters are actually.
// * font-size is specified zero.
// But nobody reproduced this bug actually...
// We should assume that user clicked on right most of the zero-width
// character in such case.
int positioning = 1;
if (charRect.width > 0) {
positioning = cursorXInChar * 4 / charRect.width;
positioning = (positioning + 2) % 4;
}
int offset =
aIMENotification.mMouseButtonEventData.mOffset - compositionStart;
if (positioning < 2) {
offset++;
}
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnMouseButtonEvent, x,y=%ld,%ld, offset=%ld, positioning=%ld\n",
cursorPos.x, cursorPos.y, offset, positioning));
// send MS_MSIME_MOUSE message to default IME window.
HWND imeWnd = ::ImmGetDefaultIMEWnd(aWindow->GetWindowHandle());
nsIMEContext IMEContext(aWindow->GetWindowHandle());
if (::SendMessageW(imeWnd, sWM_MSIME_MOUSE,
MAKELONG(MAKEWORD(button, positioning), offset),
(LPARAM) IMEContext.get()) == 1) {
return NS_SUCCESS_EVENT_CONSUMED;
}
return NS_OK;
}
/* static */ bool
nsIMM32Handler::OnKeyDownEvent(nsWindow* aWindow, WPARAM wParam, LPARAM lParam,
MSGResult& aResult)
{
PR_LOG(gIMM32Log, PR_LOG_ALWAYS,
("IMM32: OnKeyDownEvent, hWnd=%08x, wParam=%08x, lParam=%08x\n",
aWindow->GetWindowHandle(), wParam, lParam));
aResult.mConsumed = false;
switch (wParam) {
case VK_TAB:
case VK_PRIOR:
case VK_NEXT:
case VK_END:
case VK_HOME:
case VK_LEFT:
case VK_UP:
case VK_RIGHT:
case VK_DOWN:
// If IME didn't process the key message (the virtual key code wasn't
// converted to VK_PROCESSKEY), and the virtual key code event causes
// to move caret, we should cancel the composition here. Then, this
// event will be dispatched.
// XXX I think that we should dispatch all key events during composition,
// and nsEditor should cancel/commit the composition if it *thinks*
// it's needed.
if (IsComposingOnOurEditor()) {
// NOTE: We don't need to cancel the composition on another window.
CancelComposition(aWindow, false);
}
return false;
default:
return false;
}
}
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