//////////////////////////////////////////////////////////////////////
//
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//  ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
//  TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//  PARTICULAR PURPOSE.
//
//  Copyright (C) 2003  Microsoft Corporation.  All rights reserved.
//
//  CTextService.cpp
//
//          IUnknown, ITfTextInputProcessor implementation.
//
//////////////////////////////////////////////////////////////////////

#include "globals.h"
#include "TextService.h"

//+---------------------------------------------------------------------------
//
// CreateInstance
//
//----------------------------------------------------------------------------

/* static */
HRESULT CTextService::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppvObj)
{
    CTextService *pCase;
    HRESULT hr;

    if (ppvObj == NULL)
        return E_INVALIDARG;

    *ppvObj = NULL;

    if (NULL != pUnkOuter)
        return CLASS_E_NOAGGREGATION;

    if ((pCase = new CTextService) == NULL)
        return E_OUTOFMEMORY;

    hr = pCase->QueryInterface(riid, ppvObj);

    pCase->Release(); // caller still holds ref if hr == S_OK

    return hr;
}

//+---------------------------------------------------------------------------
//
// ctor
//
//----------------------------------------------------------------------------

CTextService::CTextService()
{
    DllAddRef();

    _cRef = 1;
}

//+---------------------------------------------------------------------------
//
// dtor
//
//----------------------------------------------------------------------------

CTextService::~CTextService()
{
    DllRelease();
}

//+---------------------------------------------------------------------------
//
// QueryInterface
//
//----------------------------------------------------------------------------

STDAPI CTextService::QueryInterface(REFIID riid, void **ppvObj)
{
    if (ppvObj == NULL)
        return E_INVALIDARG;

    *ppvObj = NULL;

    if (IsEqualIID(riid, IID_IUnknown) ||
        IsEqualIID(riid, IID_ITfTextInputProcessor))
    {
        *ppvObj = (ITfTextInputProcessor *)this;
    }

    if (*ppvObj)
    {
        AddRef();
        return S_OK;
    }

    return E_NOINTERFACE;
}


//+---------------------------------------------------------------------------
//
// AddRef
//
//----------------------------------------------------------------------------

STDAPI_(ULONG) CTextService::AddRef()
{
    return ++_cRef;
}

//+---------------------------------------------------------------------------
//
// Release
//
//----------------------------------------------------------------------------

STDAPI_(ULONG) CTextService::Release()
{
    LONG cr = --_cRef;

    assert(_cRef >= 0);

    if (_cRef == 0)
    {
        delete this;
    }

    return cr;
}

//+---------------------------------------------------------------------------
//
// Activate
//
//----------------------------------------------------------------------------

STDAPI CTextService::Activate(ITfThreadMgr *pThreadMgr, TfClientId tfClientId)
{
    return S_OK;
}

//+---------------------------------------------------------------------------
//
// Deactivate
//
//----------------------------------------------------------------------------

STDAPI CTextService::Deactivate()
{
    return S_OK;
}