winamp/Src/Winamp/JSAPI_CallbackParameters.cpp

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2024-09-24 12:54:57 +00:00
#include "JSAPI_CallbackParameters.h"
#include "JSAPI.h"
JSAPI::CallbackParameters::CallbackParameters()
{
refCount = 1;
}
JSAPI::CallbackParameters::~CallbackParameters()
{
//for (size_t p=0;p!=params.size();p++)
//{
// ParameterList::value_type &property = params.at(p);
// // some types need to be specifically destroyed or released
// switch(property.second.vt)
// {
// case VT_DISPATCH: // add a reference if it's an IDispatch
// property.second.pdispVal->Release();
// break;
// case VT_BSTR: // re-allocate
// SysFreeString(property.second.bstrVal);
// break;
// }
//}
for (auto &param : params)
{
// some types need to be specifically destroyed or released
switch(param.second.vt)
{
case VT_DISPATCH: // add a reference if it's an IDispatch
param.second.pdispVal->Release();
break;
case VT_BSTR: // re-allocate
SysFreeString(param.second.bstrVal);
break;
}
}
}
HRESULT JSAPI::CallbackParameters::GetIDsOfNames(REFIID riid, OLECHAR FAR* FAR* rgszNames, unsigned int cNames, LCID lcid, DISPID FAR* rgdispid)
{
bool unknowns = false;
for (unsigned int i = 0;i != cNames;i++)
{
rgdispid[i] = DISPID_UNKNOWN;
const wchar_t *propertyName = rgszNames[i];
bool found=false;
//for (size_t p=0;p!=params.size();p++)
size_t p = 0;
for(auto it = params.begin(); it != params.end(); it++, p++)
{
//ParameterList::value_type &property = params.at(p);
if (!wcscmp(it->first.c_str(), propertyName))
{
found=true;
rgdispid[i] = (DISPID)p;
break;
}
}
if (!found)
unknowns=true;
}
if (unknowns)
return DISP_E_UNKNOWNNAME;
else
return S_OK;
}
HRESULT JSAPI::CallbackParameters::Invoke(DISPID dispid, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS FAR *pdispparams, VARIANT FAR *pvarResult, EXCEPINFO FAR * pexecinfo, unsigned int FAR *puArgErr)
{
JSAPI_VERIFY_PARAMCOUNT(pdispparams, 0);
size_t index = (size_t)dispid;
if (index>=params.size())
return DISP_E_MEMBERNOTFOUND;
if (wFlags & DISPATCH_PROPERTYGET)
{
if (pvarResult)
{
//ParameterList::value_type &property = params.at(index);
auto it = params.begin();
while (index--)
{
it++;
}
*pvarResult = it->second;
// do any type-specific allocations that are necessary
switch(pvarResult->vt)
{
case VT_DISPATCH: // add a reference if it's an IDispatch
pvarResult->pdispVal->AddRef();
break;
case VT_BSTR: // re-allocate
pvarResult->bstrVal = SysAllocString(pvarResult->bstrVal);
break;
}
}
return S_OK;
}
else
return DISP_E_MEMBERNOTFOUND;
}
HRESULT JSAPI::CallbackParameters::GetTypeInfo(unsigned int itinfo, LCID lcid, ITypeInfo FAR* FAR* pptinfo)
{
return E_NOTIMPL;
}
HRESULT JSAPI::CallbackParameters::GetTypeInfoCount(unsigned int FAR * pctinfo)
{
return E_NOTIMPL;
}
STDMETHODIMP JSAPI::CallbackParameters::QueryInterface(REFIID riid, PVOID *ppvObject)
{
if (!ppvObject)
return E_POINTER;
else if (IsEqualIID(riid, IID_IDispatch))
*ppvObject = (IDispatch *)this;
else if (IsEqualIID(riid, IID_IUnknown))
*ppvObject = this;
else if (IsEqualIID(riid, IID_IDispatchEx))
*ppvObject = (IDispatchEx *)this;
else
{
*ppvObject = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
ULONG JSAPI::CallbackParameters::AddRef(void)
{
return InterlockedIncrement(&refCount);
}
ULONG JSAPI::CallbackParameters::Release(void)
{
LONG lRef = InterlockedDecrement(&refCount);
if (lRef == 0) delete this;
return lRef;
}
HRESULT JSAPI::CallbackParameters::GetDispID(BSTR bstrName, DWORD grfdex, DISPID *pid)
{
//for (size_t p=0;p!=params.size();p++)
//{
// ParameterList::value_type &property = params.at(p);
// if (!wcscmp(property.first.c_str(), bstrName))
// {
// *pid= (DISPID)p;
// return S_OK;
// }
//}
size_t p = 0;
for (auto it = params.begin(); it != params.end(); it++, p++)
{
if (!wcscmp(it->first.c_str(), bstrName))
{
*pid = (DISPID)p;
return S_OK;
}
}
return DISP_E_MEMBERNOTFOUND;
}
HRESULT JSAPI::CallbackParameters::InvokeEx(DISPID id, LCID lcid, WORD wFlags, DISPPARAMS *pdp, VARIANT *pvarRes, EXCEPINFO *pei, IServiceProvider *pspCaller)
{
JSAPI_VERIFY_PARAMCOUNT(pdp, 0);
size_t index = (size_t)id;
if (index>=params.size())
return DISP_E_MEMBERNOTFOUND;
if (wFlags & DISPATCH_PROPERTYGET)
{
if (pvarRes)
{
//ParameterList::value_type &property = params.at(index);
auto it = params.begin();
while (index--)
{
it++;
}
*pvarRes = it->second;
// do any type-specific allocations that are necessary
switch(pvarRes->vt)
{
case VT_DISPATCH: // add a reference if it's an IDispatch
pvarRes->pdispVal->AddRef();
break;
case VT_BSTR: // re-allocate
pvarRes->bstrVal = SysAllocString(pvarRes->bstrVal);
break;
}
}
return S_OK;
}
else
return DISP_E_MEMBERNOTFOUND;
}
HRESULT JSAPI::CallbackParameters::DeleteMemberByName(BSTR bstrName, DWORD grfdex)
{
return E_NOTIMPL;
}
HRESULT JSAPI::CallbackParameters::DeleteMemberByDispID(DISPID id)
{
return E_NOTIMPL;
}
HRESULT JSAPI::CallbackParameters::GetMemberProperties(DISPID id, DWORD grfdexFetch, DWORD *pgrfdex)
{
return E_NOTIMPL;
}
HRESULT JSAPI::CallbackParameters::GetMemberName(DISPID id, BSTR *pbstrName)
{
if (id >= 0 && (size_t)id < params.size())
{
auto it = params.begin();
while (id--)
{
it++;
}
*pbstrName = SysAllocString(it->first.c_str());
return S_OK;
}
return E_NOTIMPL;
}
HRESULT JSAPI::CallbackParameters::GetNextDispID(DWORD grfdex, DISPID id, DISPID *pid)
{
if (grfdex == fdexEnumDefault)
{
if (id == DISPID_UNKNOWN)
{
if (params.size() == 0)
return S_FALSE;
else
{
*pid = 0;
return S_OK;
}
}
else
{
size_t index = id+1;
if (index >= params.size())
{
return S_FALSE;
}
else
{
*pid = (DISPID)index;
return S_OK;
}
}
}
return E_NOTIMPL;
}
HRESULT JSAPI::CallbackParameters::GetNameSpaceParent(IUnknown **ppunk)
{
return E_NOTIMPL;
}
void JSAPI::CallbackParameters::AddProperty(const wchar_t *name, const VARIANT &property)
{
params[name]=property;
}
void JSAPI::CallbackParameters::AddString(const wchar_t *name, const wchar_t *value)
{
VARIANT bstrVar;
V_VT(&bstrVar) = VT_BSTR;
V_BSTR(&bstrVar) = SysAllocString(value);
AddProperty(name, bstrVar);
}
void JSAPI::CallbackParameters::AddDispatch(const wchar_t *name, IDispatch *disp)
{
VARIANT dispVar;
V_VT(&dispVar) = VT_DISPATCH;
V_DISPATCH(&dispVar) = disp;
disp->AddRef();
AddProperty(name, dispVar);
}
void JSAPI::CallbackParameters::AddLong(const wchar_t *name, LONG value)
{
VARIANT i4Var;
V_VT(&i4Var) = VT_I4;
V_I4(&i4Var) = value;
AddProperty(name, i4Var);
}
void JSAPI::CallbackParameters::AddBoolean(const wchar_t *name, bool value)
{
VARIANT boolVar;
V_VT(&boolVar) = VT_BOOL;
V_BOOL(&boolVar) = value?VARIANT_TRUE:VARIANT_FALSE;
AddProperty(name, boolVar);
}
size_t JSAPI::CallbackParameters::AddPropertyIndirect(const JSAPI::CallbackParameters::PropertyTemplate *entries, size_t count)
{
if (NULL == entries) return 0;
size_t inserted = 0;
VARIANT val;
for (size_t i = 0; i < count; i++)
{
const PropertyTemplate *ppt = &entries[i];
if (NULL == ppt->name)
continue;
switch(ppt->type)
{
case typeBool:
V_VT(&val) = VT_BOOL;
V_BOOL(&val) = (FALSE != ((BOOL)ppt->value)) ? VARIANT_TRUE : VARIANT_FALSE;
break;
case typeString:
V_VT(&val) = VT_BSTR;
V_BSTR(&val) = SysAllocString((LPCWSTR)ppt->value);
break;
case typeLong:
V_VT(&val) = VT_I4;
V_I4(&val) = (ULONG)ppt->value;
break;
case typeDispatch:
V_VT(&val) = VT_DISPATCH;
V_DISPATCH(&val) = (IDispatch*)ppt->value;
if (NULL != val.pdispVal)
val.pdispVal->AddRef();
break;
default:
continue;
break;
}
AddProperty(ppt->name, val);
inserted++;
}
return inserted;
}
/* ---------------------------------------------------------------------------- */
HRESULT JSAPI::InvokeEvent(JSAPI::CallbackParameters *parameters, IDispatch *invokee)
{
unsigned int ret;
DISPPARAMS params;
VARIANTARG arguments[1];
VariantInit(&arguments[0]);
V_VT(&arguments[0]) = VT_DISPATCH;
V_DISPATCH(&arguments[0]) = parameters;
parameters->AddRef();
params.cArgs = 1;
params.cNamedArgs = 0;
params.rgdispidNamedArgs = NULL;
params.rgvarg = arguments;
HRESULT hr = invokee->Invoke(0, IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_METHOD, &params, 0, 0, &ret);
VariantClear(&arguments[0]);
return hr;
}