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