dataitemarray.cpp

一个WinCE6。0下的IP phone的源代码

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this sample source code is subject to the terms of the Microsoft
// license agreement under which you licensed this sample source code. If
// you did not accept the terms of the license agreement, you are not
// authorized to use this sample source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the LICENSE.RTF on your install media or the root of your tools installation.
// THE SAMPLE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES.
//
#include "DataItemArray.h"
#include "..\contacts\ContactsInformation.h"
#include "..\galsearch\GALSearchInformation.h"
#include "..\freebusy\FreeBusyInformation.h"

//Macro that creates an object, sets its datarecord and qi's for the 
//correct interface -
//NOTE: Not a function because I want to use different type specifiers
#define CreateItem(hr, Type, pDataRecord, ppiUnk) \
    { \
        CComObject<Type> *pClassObj = NULL; \
        hr = CComObject<Type>::CreateInstance(&pClassObj); \
        if (SUCCEEDED(hr)) \
        { \
            hr = pClassObj->SetDataRecord(pDataRecord); \
        } \
        if (SUCCEEDED(hr)) \
        { \
            hr = pClassObj->QueryInterface( \
                IID_IUnknown, \
                reinterpret_cast<void**>(ppiUnk) \
                ); \
        } \
    }

/*------------------------------------------------------------------------------
    CExchangeClientDataItemArray::CExchangeClientDataItemArray
    
    Constructor
------------------------------------------------------------------------------*/
CExchangeClientDataItemArray::CExchangeClientDataItemArray()
{
    TRACE();
    MemTrackAdd();

    m_pDataRecordList = NULL;
    m_Type        = e_ecrtInvalid;
}

/*------------------------------------------------------------------------------
    CExchangeClientDataItemArray::~CExchangeClientDataItemArray
    
    Destructor
------------------------------------------------------------------------------*/
CExchangeClientDataItemArray::~CExchangeClientDataItemArray()
{
    TRACE();
    MemTrackRemove();
    
    if (m_pDataRecordList)
    {
        m_pDataRecordList->Release();
        m_pDataRecordList = NULL;
    }
}

/*------------------------------------------------------------------------------
    CExchangeClientDataItemArray::SetDataRecordList
    
    Initialize the internal datarecord list pointer
------------------------------------------------------------------------------*/
HRESULT CExchangeClientDataItemArray::SetDataRecordList(RefCountedDataRecordList * pDataRecordList)
{
    if (pDataRecordList == NULL)
    {
        return E_POINTER;
    }

    m_pDataRecordList = pDataRecordList;
    m_pDataRecordList->AddRef();
    return S_OK;
}

/*------------------------------------------------------------------------------
    CExchangeClientDataItemArray::SetType
    
    Initialize the internal type
    
    Parameters:
        type: 
    
    Returns (HRESULT): 
------------------------------------------------------------------------------*/
HRESULT CExchangeClientDataItemArray::SetType(ExchangeClientRequestType type)
{
    if (type == e_ecrtInvalid)
    {
        return E_INVALIDARG;
    }

    m_Type = type;
    return S_OK;
}

/*------------------------------------------------------------------------------
    CExchangeClientDataItemArray::GetItemCount
    
    Get the size of the interal vector
------------------------------------------------------------------------------*/
HRESULT STDMETHODCALLTYPE CExchangeClientDataItemArray::GetItemCount(
    UINT *pcElts
    )
{
    if (pcElts == NULL)
    {
        return E_POINTER;
    }

    *pcElts = m_pDataRecordList->size();
    return S_OK;
}

/*------------------------------------------------------------------------------
    CExchangeClientDataItemArray::GetItemAt
    
    Get the datarecord (wrapped in a CExchangeClientInfomationObject derivative) and return it
    to the user
------------------------------------------------------------------------------*/
HRESULT STDMETHODCALLTYPE CExchangeClientDataItemArray::GetItemAt(
    UINT idxItem,
    IUnknown **ppiItem
    )
{
    //check params
    if (ppiItem == NULL)
    {
        return E_POINTER;
    }

    //check params
    if (idxItem >= m_pDataRecordList->size())
    {
        return E_INVALIDARG;
    }
    *ppiItem = NULL;

    HRESULT     hr = S_OK;
    
    switch (m_Type)
    {
    case e_ecrtContacts:
        CreateItem(hr, CExchangeClientContactInformation, (*m_pDataRecordList)[idxItem], ppiItem);
        break;

    case e_ecrtGALSearch:
        CreateItem(hr, CExchangeClientGALSearchInformation, (*m_pDataRecordList)[idxItem], ppiItem);
        break;

    case e_ecrtFreeBusy:
        CreateItem(hr, CExchangeClientFreeBusyInformation, (*m_pDataRecordList)[idxItem], ppiItem);
        break;

    default:
        ASSERT(FALSE);
        hr = E_UNEXPECTED;
        break;
    }

    return hr;
}