shell/source/win32/spsupp/spsuppClassFactory.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3 * This file is part of the LibreOffice project.
   4 *
   5 * This Source Code Form is subject to the terms of the Mozilla Public
   6 * License, v. 2.0. If a copy of the MPL was not distributed with this
   7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8 */
   9
  10 #include <spsuppClassFactory.hpp>
  11 #include <COMOpenDocuments.hpp>
  12
  13 LONG ClassFactory::m_nObjCount = 0;
  14 LONG ClassFactory::m_nLockCount = 0;
  15
  16 ClassFactory::ClassFactory()
  17 {
  18     ::InterlockedIncrement(&m_nObjCount);
  19 };
  20
  21 ClassFactory::~ClassFactory()
  22 {
  23     ::InterlockedDecrement(&m_nObjCount);
  24 };
  25
  26 // IUnknown methods
  27
  28 STDMETHODIMP ClassFactory::QueryInterface(
  29     REFIID riid,
  30     void **ppvObject)
  31 {
  32     *ppvObject = nullptr;
  33     if (IsEqualIID(riid, __uuidof(IUnknown)) ||
  34         IsEqualIID(riid, __uuidof(IClassFactory)))
  35     {
  36         *ppvObject = static_cast<IClassFactory*>(this);
  37         AddRef();
  38         return S_OK;
  39     }
  40     return E_NOINTERFACE;
  41 }
  42
  43 // IClassFactory methods
  44
  45 STDMETHODIMP ClassFactory::CreateInstance(
  46     IUnknown *pUnkOuter,
  47     REFIID riid,
  48     void **ppvObject)
  49 {
  50     *ppvObject = nullptr;
  51     if (pUnkOuter)
  52     {
  53         return CLASS_E_NOAGGREGATION;
  54     }
  55
  56     COMOpenDocuments* pObj;
  57     try {
  58         pObj = new COMOpenDocuments;
  59     }
  60     catch (const COMOpenDocuments::Error& e) {
  61         return e.val();
  62     }
  63     catch (...) {
  64         return E_OUTOFMEMORY;
  65     }
  66
  67     HRESULT hr = pObj->QueryInterface(riid, ppvObject);
  68     pObj->Release();
  69     return hr;
  70 }
  71
  72 STDMETHODIMP ClassFactory::LockServer(BOOL fLock)
  73 {
  74     if (fLock)
  75         ::InterlockedIncrement(&m_nLockCount);
  76     else
  77         ::InterlockedDecrement(&m_nLockCount);
  78     return S_OK;
  79 }
  80
  81 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */