211 lines
6.6 KiB
C
211 lines
6.6 KiB
C
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/*
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* Accessibility support
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*/
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#ifndef DUI_CORE_ACCESSIBILITY_H_INCLUDED
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#define DUI_CORE_ACCESSIBILITY_H_INCLUDED
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#pragma once
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#include <oleauto.h>
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#include <oleacc.h>
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#if !defined(SUPPRESS)
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#define SUPPRESS(ClassName) \
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private: \
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ClassName(const ClassName & copy); \
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ClassName & operator=(const ClassName & rhs); \
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public:
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#endif
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namespace DirectUI
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{
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class Element;
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class HWNDElement;
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class HWNDHost;
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void NotifyAccessibilityEvent(IN DWORD dwEvent, Element * pe);
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class DuiAccessible : public IAccessible, public IEnumVARIANT, public IOleWindow
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{
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public:
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static HRESULT Create(Element * pe, DuiAccessible ** ppDA);
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SUPPRESS(DuiAccessible);
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//
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// Our IAccessible implementations can be disconnected from the actual
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// element at any time.
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//
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virtual HRESULT Disconnect();
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DuiAccessible() { }
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void Initialize(Element * pe) { _pe = pe; _cRefs = 1; }
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virtual ~DuiAccessible();
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public:
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//
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// IUnknown methods
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//
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STDMETHOD_(ULONG,AddRef)();
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STDMETHOD_(ULONG,Release)();
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STDMETHOD(QueryInterface)(REFIID riid, LPVOID *ppvObj);
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//
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// IDispatch methods
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//
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STDMETHOD(GetIDsOfNames)(REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID *rgdispid);
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STDMETHOD(GetTypeInfoCount)(UINT *pctinfo);
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STDMETHOD(GetTypeInfo)(UINT itinfo, LCID lcid, ITypeInfo **pptinfo);
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STDMETHOD(Invoke)(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pdispparams, VARIANT *pvarResult, EXCEPINFO *pexcepinfo, UINT *puArgErr);
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//
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// IAccessible methods
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//
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STDMETHOD(accSelect)(long flagsSelect, VARIANT varChild);
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STDMETHOD(accLocation)(long *pxLeft, long *pyTop, long *pcxWidth, long *pcyHeight, VARIANT varChild);
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STDMETHOD(accNavigate)(long navDir, VARIANT varStart, VARIANT *pvarEndUpAt);
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STDMETHOD(accHitTest)(long xLeft, long yTop, VARIANT *pvarChildAtPoint);
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STDMETHOD(accDoDefaultAction)(VARIANT varChild);
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STDMETHOD(get_accChild)(VARIANT varChildIndex, IDispatch **ppdispChild);
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STDMETHOD(get_accParent)(IDispatch **ppdispParent);
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STDMETHOD(get_accChildCount)(long *pChildCount);
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STDMETHOD(get_accName)(VARIANT varChild, BSTR *pszName);
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STDMETHOD(put_accName)(VARIANT varChild, BSTR szName);
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STDMETHOD(get_accValue)(VARIANT varChild, BSTR *pszValue);
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STDMETHOD(put_accValue)(VARIANT varChild, BSTR pszValue);
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STDMETHOD(get_accDescription)(VARIANT varChild, BSTR *pszDescription);
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STDMETHOD(get_accKeyboardShortcut)(VARIANT varChild, BSTR *pszKeyboardShortcut);
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STDMETHOD(get_accRole)(VARIANT varChild, VARIANT *pvarRole);
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STDMETHOD(get_accState)(VARIANT varChild, VARIANT *pvarState);
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STDMETHOD(get_accHelp)(VARIANT varChild, BSTR *pszHelp);
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STDMETHOD(get_accHelpTopic)(BSTR *pszHelpFile, VARIANT varChild, long *pidTopic);
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STDMETHOD(get_accFocus)(VARIANT *pvarFocusChild);
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STDMETHOD(get_accSelection)(VARIANT *pvarSelectedChildren);
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STDMETHOD(get_accDefaultAction)(VARIANT varChild, BSTR *pszDefaultAction);
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//
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// IEnumVARIANT methods
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//
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STDMETHOD(Next)(unsigned long celt, VARIANT * rgvar, unsigned long * pceltFetched);
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STDMETHOD(Skip)(unsigned long celt);
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STDMETHOD(Reset)();
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STDMETHOD(Clone)(IEnumVARIANT ** ppenum);
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//
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// IOleWindow methods
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//
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STDMETHOD(GetWindow)(HWND * phwnd);
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STDMETHOD(ContextSensitiveHelp)(BOOL fEnterMode);
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protected:
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Element * GetAccessibleParent(Element * pe);
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HRESULT GetDispatchFromElement(Element * pe, IDispatch ** ppDispatch);
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protected:
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Element * _pe;
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private:
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LONG _cRefs;
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};
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class HWNDElementAccessible : public DuiAccessible
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{
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public:
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static HRESULT Create(HWNDElement * pe, DuiAccessible ** ppDA);
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SUPPRESS(HWNDElementAccessible);
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//
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// Our IAccessible implementations can be disconnected from the actual
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// element at any time.
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//
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virtual HRESULT Disconnect();
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HWNDElementAccessible() { }
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HRESULT Initialize(HWNDElement * pe);
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virtual ~HWNDElementAccessible();
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public:
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//
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// IAccessible methods
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//
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STDMETHOD(get_accParent)(IDispatch **ppdispParent);
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private:
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IAccessible * _pParent;
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};
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class HWNDHostAccessible : public DuiAccessible
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{
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public:
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static HRESULT Create(HWNDHost * pe, DuiAccessible ** ppDA);
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SUPPRESS(HWNDHostAccessible);
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//
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// Our IAccessible implementations can be disconnected from the actual
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// element at any time.
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//
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virtual HRESULT Disconnect();
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HWNDHostAccessible() { }
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HRESULT Initialize(HWNDHost * pe);
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virtual ~HWNDHostAccessible();
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public:
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//
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// IUnknown methods
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//
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STDMETHOD(QueryInterface)(REFIID riid, LPVOID *ppvObj);
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//
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// IAccessible methods
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//
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STDMETHOD(accSelect)(long flagsSelect, VARIANT varChild);
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STDMETHOD(accLocation)(long *pxLeft, long *pyTop, long *pcxWidth, long *pcyHeight, VARIANT varChild);
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STDMETHOD(accNavigate)(long navDir, VARIANT varStart, VARIANT *pvarEndUpAt);
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STDMETHOD(accHitTest)(long xLeft, long yTop, VARIANT *pvarChildAtPoint);
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STDMETHOD(accDoDefaultAction)(VARIANT varChild);
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STDMETHOD(get_accChild)(VARIANT varChildIndex, IDispatch **ppdispChild);
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STDMETHOD(get_accParent)(IDispatch **ppdispParent);
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STDMETHOD(get_accChildCount)(long *pChildCount);
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STDMETHOD(get_accName)(VARIANT varChild, BSTR *pszName);
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STDMETHOD(put_accName)(VARIANT varChild, BSTR szName);
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STDMETHOD(get_accValue)(VARIANT varChild, BSTR *pszValue);
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STDMETHOD(put_accValue)(VARIANT varChild, BSTR pszValue);
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STDMETHOD(get_accDescription)(VARIANT varChild, BSTR *pszDescription);
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STDMETHOD(get_accKeyboardShortcut)(VARIANT varChild, BSTR *pszKeyboardShortcut);
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STDMETHOD(get_accRole)(VARIANT varChild, VARIANT *pvarRole);
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STDMETHOD(get_accState)(VARIANT varChild, VARIANT *pvarState);
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STDMETHOD(get_accHelp)(VARIANT varChild, BSTR *pszHelp);
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STDMETHOD(get_accHelpTopic)(BSTR *pszHelpFile, VARIANT varChild, long *pidTopic);
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STDMETHOD(get_accFocus)(VARIANT *pvarFocusChild);
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STDMETHOD(get_accSelection)(VARIANT *pvarSelectedChildren);
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STDMETHOD(get_accDefaultAction)(VARIANT varChild, BSTR *pszDefaultAction);
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//
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// IEnumVARIANT methods
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//
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STDMETHOD(Next)(unsigned long celt, VARIANT * rgvar, unsigned long * pceltFetched);
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STDMETHOD(Skip)(unsigned long celt);
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STDMETHOD(Reset)();
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STDMETHOD(Clone)(IEnumVARIANT ** ppenum);
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//
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// IOleWindow methods
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//
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STDMETHOD(GetWindow)(HWND * phwnd);
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STDMETHOD(ContextSensitiveHelp)(BOOL fEnterMode);
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private:
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IAccessible * _pCtrl;
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IEnumVARIANT * _pEnum;
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IOleWindow * _pOleWindow;
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};
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} // namespace DirectUI
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#endif // DUI_CORE_ACCESSIBILITY_H_INCLUDED
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