135 lines
3.8 KiB
C++
135 lines
3.8 KiB
C++
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved
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#include "Private.h"
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#include "globals.h"
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#include "SampleIME.h"
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//+---------------------------------------------------------------------------
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//
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// ITfTextEditSink::OnEndEdit
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//
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// Called by the system whenever anyone releases a write-access document lock.
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//----------------------------------------------------------------------------
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STDAPI CSampleIME::OnEndEdit(__RPC__in_opt ITfContext *pContext, TfEditCookie ecReadOnly, __RPC__in_opt ITfEditRecord *pEditRecord)
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{
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BOOL isSelectionChanged;
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//
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// did the selection change?
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// The selection change includes the movement of caret as well.
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// The caret position is represent as the empty selection range when
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// there is no selection.
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//
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if (pEditRecord == nullptr)
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{
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return E_INVALIDARG;
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}
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if (SUCCEEDED(pEditRecord->GetSelectionStatus(&isSelectionChanged)) &&
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isSelectionChanged)
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{
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// If the selection is moved to out side of the current composition,
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// we terminate the composition. This TextService supports only one
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// composition in one context object.
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if (_IsComposing())
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{
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TF_SELECTION tfSelection;
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ULONG fetched = 0;
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if (pContext == nullptr)
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{
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return E_INVALIDARG;
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}
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if (FAILED(pContext->GetSelection(ecReadOnly, TF_DEFAULT_SELECTION, 1, &tfSelection, &fetched)) || fetched != 1)
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{
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return S_FALSE;
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}
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ITfRange* pRangeComposition = nullptr;
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if (SUCCEEDED(_pComposition->GetRange(&pRangeComposition)))
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{
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if (!_IsRangeCovered(ecReadOnly, tfSelection.range, pRangeComposition))
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{
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_EndComposition(pContext);
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}
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pRangeComposition->Release();
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}
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tfSelection.range->Release();
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}
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}
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return S_OK;
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}
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//+---------------------------------------------------------------------------
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//
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// _InitTextEditSink
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//
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// Init a text edit sink on the topmost context of the document.
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// Always release any previous sink.
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//----------------------------------------------------------------------------
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BOOL CSampleIME::_InitTextEditSink(_In_ ITfDocumentMgr *pDocMgr)
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{
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ITfSource* pSource = nullptr;
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BOOL ret = TRUE;
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// clear out any previous sink first
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if (_textEditSinkCookie != TF_INVALID_COOKIE)
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{
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if (SUCCEEDED(_pTextEditSinkContext->QueryInterface(IID_ITfSource, (void **)&pSource)))
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{
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pSource->UnadviseSink(_textEditSinkCookie);
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pSource->Release();
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}
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_pTextEditSinkContext->Release();
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_pTextEditSinkContext = nullptr;
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_textEditSinkCookie = TF_INVALID_COOKIE;
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}
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if (pDocMgr == nullptr)
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{
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return TRUE; // caller just wanted to clear the previous sink
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}
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if (FAILED(pDocMgr->GetTop(&_pTextEditSinkContext)))
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{
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return FALSE;
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}
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if (_pTextEditSinkContext == nullptr)
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{
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return TRUE; // empty document, no sink possible
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}
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ret = FALSE;
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if (SUCCEEDED(_pTextEditSinkContext->QueryInterface(IID_ITfSource, (void **)&pSource)))
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{
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if (SUCCEEDED(pSource->AdviseSink(IID_ITfTextEditSink, (ITfTextEditSink *)this, &_textEditSinkCookie)))
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{
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ret = TRUE;
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}
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else
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{
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_textEditSinkCookie = TF_INVALID_COOKIE;
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}
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pSource->Release();
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}
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if (ret == FALSE)
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{
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_pTextEditSinkContext->Release();
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_pTextEditSinkContext = nullptr;
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}
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return ret;
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}
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