HRESULT COVTSF::_HandleCompositionBackspace(TfEditCookie ec, _In_ ITfContext *pContext)
{
ITfRange* pRangeComposition = nullptr;
TF_SELECTION tfSelection;
ULONG fetched = 0;
BOOL isCovered = TRUE;
// Start the new (std::nothrow) compositon if there is no composition.
if (!_IsComposing())
{
return S_OK;
}
// first, test where a keystroke would go in the document if we did an insert
if (FAILED(pContext->GetSelection(ec, TF_DEFAULT_SELECTION, 1, &tfSelection, &fetched)) || fetched != 1)
{
return S_FALSE;
}
// is the insertion point covered by a composition?
if (SUCCEEDED(_pComposition->GetRange(&pRangeComposition)))
{
isCovered = _IsRangeCovered(ec, tfSelection.range, pRangeComposition);
pRangeComposition->Release();
if (!isCovered)
{
goto Exit;
}
}
//
// Add virtual key to composition processor engine
//
CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
pCompositionProcessorEngine = _pCompositionProcessorEngine;
DWORD_PTR vKeyLen = pCompositionProcessorEngine->GetVirtualKeyLength();
if (vKeyLen)
{
pCompositionProcessorEngine->RemoveVirtualKey(vKeyLen - 1);
if (pCompositionProcessorEngine->GetVirtualKeyLength())
{
_HandleCompositionInputWorker(pCompositionProcessorEngine, ec, pContext);
}
else
{
_HandleCancel(ec, pContext);
}
}
Exit:
tfSelection.range->Release();
return S_OK;
}
HRESULT COVTSF::_HandleCompositionInput(TfEditCookie ec, _In_ ITfContext *pContext, WCHAR wch)
{
ITfRange* pRangeComposition = nullptr;
TF_SELECTION tfSelection;
ULONG fetched = 0;
BOOL isCovered = TRUE;
CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
pCompositionProcessorEngine = _pCompositionProcessorEngine;
if ((_pCandidateListUIPresenter != nullptr) && (_candidateMode != CANDIDATE_INCREMENTAL))
{
_HandleCompositionFinalize(ec, pContext, FALSE);
}
// Start the new (std::nothrow) compositon if there is no composition.
if (!_IsComposing())
{
_StartComposition(pContext);
}
// first, test where a keystroke would go in the document if we did an insert
if (pContext->GetSelection(ec, TF_DEFAULT_SELECTION, 1, &tfSelection, &fetched) != S_OK || fetched != 1)
{
return S_FALSE;
}
// is the insertion point covered by a composition?
if (SUCCEEDED(_pComposition->GetRange(&pRangeComposition)))
{
isCovered = _IsRangeCovered(ec, tfSelection.range, pRangeComposition);
pRangeComposition->Release();
if (!isCovered)
{
goto Exit;
}
}
// Add virtual key to composition processor engine
pCompositionProcessorEngine->AddVirtualKey(wch);
_HandleCompositionInputWorker(pCompositionProcessorEngine, ec, pContext);
Exit:
tfSelection.range->Release();
return S_OK;
}
void CIME::_UpdateLanguageBarOnSetFocus(_In_ ITfDocumentMgr *pDocMgrFocus)
{
BOOL needDisableButtons = FALSE;
if (!pDocMgrFocus)
{
needDisableButtons = TRUE;
}
else
{
IEnumTfContexts* pEnumContext = nullptr;
if (FAILED(pDocMgrFocus->EnumContexts(&pEnumContext)) || !pEnumContext)
{
needDisableButtons = TRUE;
}
else
{
ULONG fetched = 0;
ITfContext* pContext = nullptr;
if (FAILED(pEnumContext->Next(1, &pContext, &fetched)) || fetched != 1)
{
needDisableButtons = TRUE;
}
if (!pContext)
{
// context is not associated
needDisableButtons = TRUE;
}
else
{
pContext->Release();
}
}
if (pEnumContext)
{
pEnumContext->Release();
}
}
CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
pCompositionProcessorEngine = _pCompositionProcessorEngine;
pCompositionProcessorEngine->SetLanguageBarStatus(TF_LBI_STATUS_DISABLED, needDisableButtons);
}
VOID COVTSF::_DeleteCandidateList(BOOL isForce, _In_opt_ ITfContext *pContext)
{
isForce;pContext;
CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
pCompositionProcessorEngine = _pCompositionProcessorEngine;
pCompositionProcessorEngine->PurgeVirtualKey();
if (_pCandidateListUIPresenter)
{
_pCandidateListUIPresenter->_EndCandidateList();
_candidateMode = CANDIDATE_NONE;
_isCandidateWithWildcard = FALSE;
}
}
STDMETHODIMP CSearchCandidateProvider::GetSearchCandidates(BSTR bstrQuery, BSTR bstrApplicationID, _Outptr_result_maybenull_ ITfCandidateList **pplist)
{
bstrApplicationID;bstrQuery;
HRESULT hr = E_FAIL;
*pplist = nullptr;
if (nullptr == _pTip)
{
return hr;
}
CCompositionProcessorEngine* pCompositionProcessorEngine = ((CSampleIME*)_pTip)->GetCompositionProcessorEngine();
if (nullptr == pCompositionProcessorEngine)
{
return hr;
}
CSampleImeArray<CCandidateListItem> candidateList;
pCompositionProcessorEngine->GetCandidateList(&candidateList, TRUE, FALSE);
int cCand = min(candidateList.Count(), FAKECANDIDATENUMBER);
if (0 < cCand)
{
hr = CTipCandidateList::CreateInstance(pplist, cCand);
if (FAILED(hr))
{
return hr;
}
for (int iCand = 0; iCand < cCand; iCand++)
{
ITfCandidateString* pCandStr = nullptr;
CTipCandidateString::CreateInstance(IID_ITfCandidateString, (void**)&pCandStr);
((CTipCandidateString*)pCandStr)->SetIndex(iCand);
((CTipCandidateString*)pCandStr)->SetString(candidateList.GetAt(iCand)->_ItemString.Get(), candidateList.GetAt(iCand)->_ItemString.GetLength());
((CTipCandidateList*)(*pplist))->SetCandidate(&pCandStr);
}
}
hr = S_OK;
return hr;
}
HRESULT COVTSF::_HandleCompositionPunctuation(TfEditCookie ec, _In_ ITfContext *pContext, WCHAR wch)
{
HRESULT hr = S_OK;
if (_candidateMode != CANDIDATE_NONE && _pCandidateListUIPresenter)
{
DWORD_PTR candidateLen = 0;
const WCHAR* pCandidateString = nullptr;
candidateLen = _pCandidateListUIPresenter->_GetSelectedCandidateString(&pCandidateString);
CStringRange candidateString;
candidateString.Set(pCandidateString, candidateLen);
if (candidateLen)
{
_AddComposingAndChar(ec, pContext, &candidateString);
}
}
//
// Get punctuation char from composition processor engine
//
CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
pCompositionProcessorEngine = _pCompositionProcessorEngine;
WCHAR punctuation = pCompositionProcessorEngine->GetPunctuation(wch);
CStringRange punctuationString;
punctuationString.Set(&punctuation, 1);
// Finalize character
hr = _AddCharAndFinalize(ec, pContext, &punctuationString);
if (FAILED(hr))
{
return hr;
}
_HandleCancel(ec, pContext);
return S_OK;
}
HRESULT COVTSF::_HandleCompositionConvert(TfEditCookie ec, _In_ ITfContext *pContext, BOOL isWildcardSearch)
{
HRESULT hr = S_OK;
COVTSFArray<CCandidateListItem> candidateList;
//
// Get candidate string from composition processor engine
//
CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
pCompositionProcessorEngine = _pCompositionProcessorEngine;
pCompositionProcessorEngine->GetCandidateList(&candidateList, FALSE, isWildcardSearch);
// If there is no candlidate listin the current reading string, we don't do anything. Just wait for
// next char to be ready for the conversion with it.
int nCount = candidateList.Count();
if (nCount)
{
if (_pCandidateListUIPresenter)
{
_pCandidateListUIPresenter->_EndCandidateList();
delete _pCandidateListUIPresenter;
_pCandidateListUIPresenter = nullptr;
_candidateMode = CANDIDATE_NONE;
_isCandidateWithWildcard = FALSE;
}
//
// create an instance of the candidate list class.
//
if (_pCandidateListUIPresenter == nullptr)
{
_pCandidateListUIPresenter = new (std::nothrow) CCandidateListUIPresenter(this, Global::AtomCandidateWindow,
CATEGORY_CANDIDATE,
pCompositionProcessorEngine->GetCandidateListIndexRange(),
FALSE);
if (!_pCandidateListUIPresenter)
{
return E_OUTOFMEMORY;
}
_candidateMode = CANDIDATE_ORIGINAL;
}
_isCandidateWithWildcard = isWildcardSearch;
// we don't cache the document manager object. So get it from pContext.
ITfDocumentMgr* pDocumentMgr = nullptr;
if (SUCCEEDED(pContext->GetDocumentMgr(&pDocumentMgr)))
{
// get the composition range.
ITfRange* pRange = nullptr;
if (SUCCEEDED(_pComposition->GetRange(&pRange)))
{
hr = _pCandidateListUIPresenter->_StartCandidateList(_tfClientId, pDocumentMgr, pContext, ec, pRange, pCompositionProcessorEngine->GetCandidateWindowWidth());
pRange->Release();
}
pDocumentMgr->Release();
}
if (SUCCEEDED(hr))
{
_pCandidateListUIPresenter->_SetText(&candidateList, FALSE);
}
}
return hr;
}