inline void handleCandidatesClosed(HWND hwnd) {
if(!hwnd||hwnd!=candidateIMEWindow) return;
/* Obtain IME context */
HIMC imc = ImmGetContext(hwnd);
if (!imc) {
candidateIMEWindow=0;
nvdaControllerInternal_inputCandidateListUpdate(L"",-1,L"");
return;
}
DWORD count = 0;
DWORD len = ImmGetCandidateListCountW(imc, &count);
ImmReleaseContext(hwnd, imc);
if (!count) {
candidateIMEWindow=0;
nvdaControllerInternal_inputCandidateListUpdate(L"",-1,L"");
}
}
static bool handleCandidates(HWND hwnd) {
/* Obtain IME context */
HIMC imc = ImmGetContext(hwnd);
if (!imc) return false;
/* Make sure there is at least one candidate list */
DWORD count = 0;
DWORD len = ImmGetCandidateListCountW(imc, &count);
if (!count) {
ImmReleaseContext(hwnd, imc);
return false;
}
candidateIMEWindow=hwnd;
/* Read first candidate list */
CANDIDATELIST* list = (CANDIDATELIST*)malloc(len);
ImmGetCandidateList(imc, 0, list, len);
ImmReleaseContext(hwnd, imc);
/* Determine candidates currently being shown */
DWORD pageEnd = list->dwPageStart + list->dwPageSize;
DWORD selection=list->dwSelection-list->dwPageStart;
if (list->dwPageSize == 0) {
pageEnd = list->dwCount;
} else if (pageEnd > list->dwCount) {
pageEnd = list->dwCount;
}
/* Concatenate currently shown candidates into a string */
WCHAR* cand_str = (WCHAR*)malloc(len);
WCHAR* ptr = cand_str;
for (DWORD n = list->dwPageStart, count = 0; n < pageEnd; ++n) {
DWORD offset = list->dwOffset[n];
WCHAR* cand = (WCHAR*)(((char*)list) + offset);
size_t clen = wcslen(cand);
if (!clen) continue;
CopyMemory(ptr, cand, (clen + 1) * sizeof(WCHAR));
if ((n + 1) < pageEnd) ptr[clen] = '\n';
ptr += (clen + 1);
++count;
}
HKL kbd_layout = GetKeyboardLayout(0);
WCHAR filename[MAX_PATH + 1]={0};
ImmGetIMEFileNameW(kbd_layout, filename, MAX_PATH);
if(cand_str&&wcslen(cand_str)>0) {
nvdaControllerInternal_inputCandidateListUpdate(cand_str,selection,filename);
}
/* Clean up */
free(cand_str);
free(list);
return (count > 0);
}
static LRESULT handleIMEWindowMessage(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
switch (message) {
case WM_IME_NOTIFY:
if(!hasValidIMEContext(hwnd)) return 0;
switch (wParam) {
case IMN_SETOPENSTATUS:
handleOpenStatus(hwnd);
break;
case IMN_OPENCANDIDATE:
case IMN_CHANGECANDIDATE:
PostMessage(hwnd,wm_candidateChange,0,0);
break;
case IMN_CLOSECANDIDATE:
nvdaControllerInternal_inputCandidateListUpdate(L"",-1,L"");
break;
case IMN_SETCONVERSIONMODE:
PostMessage(hwnd,wm_handleIMEConversionModeUpdate,0,0);
break;
case IMN_PRIVATE:
// Needed in XP to support EasyDots IME
if (!isUIElementMgrSafe || !isTSFThread(true))
handleReadingStringUpdate(hwnd);
break;
}
break;
case WM_IME_COMPOSITION:
if(!hasValidIMEContext(hwnd)) return 0;
curIMEWindow=hwnd;
if(!isTSFThread(true)) {\
if(lParam&GCS_COMPSTR||lParam&GCS_CURSORPOS) {
handleComposition(hwnd, wParam, lParam);
}
}
break;
case WM_IME_ENDCOMPOSITION:
if(!hasValidIMEContext(hwnd)) return 0;
if(curIMEWindow==hwnd) {
if(handleEndComposition(hwnd, wParam, lParam)) {
//Disable further typed character notifications produced by TSF
typedCharacter_window=NULL;
}
curIMEWindow=NULL;
}
break;
case WM_ACTIVATE:
case WM_SETFOCUS:
if(!hasValidIMEContext(hwnd)) return 0;
handleIMEConversionModeUpdate(hwnd,false);
if(!isTSFThread(true)) {
if (hwnd != GetFocus()) break;
handleComposition(hwnd, wParam, lParam);
handleCandidates(hwnd);
}
break;
default:
break;
}
return 0;
}