windows-nt/Source/XPSP1/NT/shell/cpls/appwzdui/pubenum.cpp

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2020-09-26 03:20:57 -05:00
//---------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation
//
// File: pubenum.cpp
//
// The current order of enumeration is Legacy --> Darwin --> SMS
//
// History:
// 1-18-97 by dli
//------------------------------------------------------------------------
#include "priv.h"
// Do not build this file if on Win9X or NT4
#ifndef DOWNLEVEL_PLATFORM
#include "pubenum.h"
void _DestroyHdpaEnum(HDPA hdpaEnum)
{
ASSERT(IsValidHDPA(hdpaEnum));
IEnumPublishedApps * pepa;
int idpa;
for (idpa = 0; idpa < DPA_GetPtrCount(hdpaEnum); idpa++)
{
pepa = (IEnumPublishedApps *)DPA_GetPtr(hdpaEnum, idpa);
if (EVAL(pepa))
pepa->Release();
}
DPA_Destroy(hdpaEnum);
}
CShellEnumPublishedApps::CShellEnumPublishedApps(HDPA hdpaEnum) : _cRef(1), _hdpaEnum(hdpaEnum)
{
}
CShellEnumPublishedApps::~CShellEnumPublishedApps()
{
if (_hdpaEnum)
_DestroyHdpaEnum(_hdpaEnum);
}
// IEnumPublishedApps::QueryInterface
HRESULT CShellEnumPublishedApps::QueryInterface(REFIID riid, LPVOID * ppvOut)
{
static const QITAB qit[] = {
QITABENT(CShellEnumPublishedApps, IEnumPublishedApps), // IID_IEnumPublishedApps
{ 0 },
};
return QISearch(this, qit, riid, ppvOut);
}
// IEnumPublishedApps::AddRef
ULONG CShellEnumPublishedApps::AddRef()
{
_cRef++;
TraceMsg(TF_OBJLIFE, "CShellEnumPublishedApps()::AddRef called, new _cRef=%lX", _cRef);
return _cRef;
}
// IEnumPublishedApps::Release
ULONG CShellEnumPublishedApps::Release()
{
_cRef--;
TraceMsg(TF_OBJLIFE, "CShellEnumPublishedApps()::Release called, new _cRef=%lX", _cRef);
if (_cRef > 0)
return _cRef;
delete this;
return 0;
}
// IEnumPublishedApps::Next
HRESULT CShellEnumPublishedApps::Next(IPublishedApp ** ppia)
{
HRESULT hres = E_FAIL;
if (_hdpaEnum)
{
IEnumPublishedApps * pepa = (IEnumPublishedApps *)DPA_GetPtr(_hdpaEnum, _iEnum);
//
// If pepa is not valid or pepa->Next failed, or at the end of the current enumerator,
// we skip this Enumerator, and go on to the next one until we hit the limit
while ((!pepa || S_OK != (hres = pepa->Next(ppia))) && (_iEnum < DPA_GetPtrCount(_hdpaEnum)))
{
_iEnum++;
pepa = (IEnumPublishedApps *)DPA_GetPtr(_hdpaEnum, _iEnum);
}
}
return hres;
}
// IEnumPublishedApps::Reset
HRESULT CShellEnumPublishedApps::Reset(void)
{
// Call reset on everyone in the list and set our index iEnum to 0;
if (_hdpaEnum)
{
IEnumPublishedApps * pepa;
int idpa;
for (idpa = 0; idpa < DPA_GetPtrCount(_hdpaEnum); idpa++)
{
pepa = (IEnumPublishedApps *)DPA_GetPtr(_hdpaEnum, idpa);
if (pepa)
pepa->Reset();
}
_iEnum = 0;
return S_OK;
}
return E_FAIL;
}
#endif //DOWNLEVEL_PLATFORM