winamp/Src/Winamp/JSAPI_CallbackParameters.h
2024-09-24 14:54:57 +02:00

87 lines
3.1 KiB
C++

#pragma once
#include <dispex.h>
#include <map>
#include <string>
/*
This is just a generic property map
wchar_t * -> VARIANT
Since it stores added properties consecutively (no sorting on property name)
it should be safe to add properties after-the-fact, but it's not recommended
not thread safe, so don't add properties on a different than than whomever is reading them via IDispatch
*/
namespace JSAPI
{
class CallbackParameters : public IDispatchEx
{
public:
CallbackParameters();
~CallbackParameters();
STDMETHOD(QueryInterface)(REFIID riid, PVOID *ppvObject);
STDMETHOD_(ULONG, AddRef)(void);
STDMETHOD_(ULONG, Release)(void);
/** Call this to add a new property
** On object destruction, ~CallbackParameters() will call
**** Release() on any VT_DISPATCH variants
**** SysFreeString() on any VT_BSTR variants
**** TODO on any VT_ARRAY variants
** so be sure to prepare your data ahead of time (e.g. call AddRef)
** if you call the helper functions (below) they will do
** SysAllocString, AddRef, etc for you.
*/
void AddProperty(const wchar_t *name, const VARIANT &property);
/** helper functions if you don't want to build your own VARIANT
**/
void AddString(const wchar_t *name, const wchar_t *value);
void AddDispatch(const wchar_t *name, IDispatch *disp); // note: calls AddRef() on your object;
void AddLong(const wchar_t *name, LONG value);
void AddBoolean(const wchar_t *name, bool value);
typedef enum
{
typeBool = 0,
typeString = 1,
typeLong = 2,
typeDispatch = 3,
} PtopertyType;
typedef struct __PropertyTemplate
{
unsigned char type;
const wchar_t *name;
ULONG_PTR value;
} PropertyTemplate;
size_t AddPropertyIndirect(const PropertyTemplate *entries, size_t count);
private:
// *** IDispatch Methods ***
STDMETHOD (GetIDsOfNames)(REFIID riid, OLECHAR FAR* FAR* rgszNames, unsigned int cNames, LCID lcid, DISPID FAR* rgdispid);
STDMETHOD (GetTypeInfo)(unsigned int itinfo, LCID lcid, ITypeInfo FAR* FAR* pptinfo);
STDMETHOD (GetTypeInfoCount)(unsigned int FAR * pctinfo);
STDMETHOD (Invoke)(DISPID dispid, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS FAR *pdispparams, VARIANT FAR *pvarResult, EXCEPINFO FAR * pexecinfo, unsigned int FAR *puArgErr);
// *** IDispatchEx Methods ***
STDMETHOD (GetDispID)(BSTR bstrName, DWORD grfdex, DISPID *pid);
STDMETHOD (InvokeEx)(DISPID id, LCID lcid, WORD wFlags, DISPPARAMS *pdp, VARIANT *pvarRes, EXCEPINFO *pei, IServiceProvider *pspCaller);
STDMETHOD (DeleteMemberByName)(BSTR bstrName, DWORD grfdex) ;
STDMETHOD (DeleteMemberByDispID)(DISPID id);
STDMETHOD (GetMemberProperties)(DISPID id, DWORD grfdexFetch, DWORD *pgrfdex);
STDMETHOD (GetMemberName)(DISPID id, BSTR *pbstrName);
STDMETHOD (GetNextDispID)(DWORD grfdex, DISPID id, DISPID *pid);
STDMETHOD (GetNameSpaceParent)(IUnknown **ppunk);
private:
typedef std::map<std::wstring, VARIANT> ParameterList;
ParameterList params;
volatile LONG refCount;
};
// helper function which calls Invoke(0) with 1 parameter (VT_DISPATCH of your CallbackParameters object)
HRESULT InvokeEvent(JSAPI::CallbackParameters *parameters, IDispatch *invokee);
}