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///////////////////////////////////////////////////////////////////////////////
// Name: src/msw/ole/access.cpp
// Purpose: implementation of wxIAccessible and wxAccessible
// Author: Julian Smart
// Modified by:
// Created: 2003-02-12
// RCS-ID: $Id: access.cpp 62067 2009-09-24 10:15:06Z JS $
// Copyright: (c) 2003 Julian Smart
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if defined(__BORLANDC__)
#pragma hdrstop
#endif
#if wxUSE_OLE && wxUSE_ACCESSIBILITY
#include "wx/access.h"
#ifndef WX_PRECOMP
#include "wx/msw/wrapwin.h"
#include "wx/window.h"
#include "wx/log.h"
#endif
// for some compilers, the entire ole2.h must be included, not only oleauto.h
#if wxUSE_NORLANDER_HEADERS || defined(__WATCOMC__)
#include <ole2.h>
#endif
#include <oleauto.h>
#include <oleacc.h>
// #include <winable.h> // commented out because winable.h is no longer in Windows SDK
#include "wx/msw/ole/oleutils.h"
#ifndef CHILDID_SELF
#define CHILDID_SELF 0
#endif
#ifndef OBJID_CLIENT
#define OBJID_CLIENT 0xFFFFFFFC
#endif
// Convert to Windows role
int wxConvertToWindowsRole(wxAccRole wxrole);
// Convert to Windows state
long wxConvertToWindowsState(long wxstate);
// Convert to Windows selection flag
int wxConvertToWindowsSelFlag(wxAccSelectionFlags sel);
// Convert from Windows selection flag
wxAccSelectionFlags wxConvertFromWindowsSelFlag(int sel);
#if wxUSE_VARIANT
// ----------------------------------------------------------------------------
// wxIEnumVARIANT interface implementation
// ----------------------------------------------------------------------------
class wxIEnumVARIANT : public IEnumVARIANT
{
public:
wxIEnumVARIANT(const wxVariant& variant);
virtual ~wxIEnumVARIANT() { }
DECLARE_IUNKNOWN_METHODS;
// IEnumVARIANT
STDMETHODIMP Next(ULONG celt, VARIANT *rgelt, ULONG *pceltFetched);
STDMETHODIMP Skip(ULONG celt);
STDMETHODIMP Reset();
STDMETHODIMP Clone(IEnumVARIANT **ppenum);
private:
wxVariant m_variant; // List of further variants
int m_nCurrent; // Current enum position
DECLARE_NO_COPY_CLASS(wxIEnumVARIANT)
};
// ----------------------------------------------------------------------------
// wxIEnumVARIANT
// ----------------------------------------------------------------------------
BEGIN_IID_TABLE(wxIEnumVARIANT)
ADD_IID(Unknown)
ADD_IID(EnumVARIANT)
END_IID_TABLE;
IMPLEMENT_IUNKNOWN_METHODS(wxIEnumVARIANT)
// wxVariant contains a list of further variants.
wxIEnumVARIANT::wxIEnumVARIANT(const wxVariant& variant)
{
m_variant = variant;
}
STDMETHODIMP wxIEnumVARIANT::Next(ULONG celt,
VARIANT *rgelt,
ULONG *pceltFetched)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumVARIANT::Next"));
if ( celt > 1 ) {
// we only return 1 element at a time - mainly because I'm too lazy to
// implement something which you're never asked for anyhow
return S_FALSE;
}
if (m_variant.GetType() != wxT("list"))
return S_FALSE;
if ( m_nCurrent < (int) m_variant.GetList().GetCount() ) {
if (!wxConvertVariantToOle(m_variant[m_nCurrent++], rgelt[0]))
{
return S_FALSE;
}
// TODO: should we AddRef if this is an object?
* pceltFetched = 1;
return S_OK;
}
else {
// bad index
return S_FALSE;
}
}
STDMETHODIMP wxIEnumVARIANT::Skip(ULONG celt)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumVARIANT::Skip"));
if (m_variant.GetType() != wxT("list"))
return S_FALSE;
m_nCurrent += celt;
if ( m_nCurrent < (int) m_variant.GetList().GetCount() )
return S_OK;
// no, can't skip this many elements
m_nCurrent -= celt;
return S_FALSE;
}
STDMETHODIMP wxIEnumVARIANT::Reset()
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumVARIANT::Reset"));
m_nCurrent = 0;
return S_OK;
}
STDMETHODIMP wxIEnumVARIANT::Clone(IEnumVARIANT **ppenum)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumVARIANT::Clone"));
wxIEnumVARIANT *pNew = new wxIEnumVARIANT(m_variant);
pNew->AddRef();
*ppenum = pNew;
return S_OK;
}
#endif // wxUSE_VARIANT
// ----------------------------------------------------------------------------
// wxIAccessible implementation of IAccessible interface
// ----------------------------------------------------------------------------
class wxIAccessible : public IAccessible
{
public:
wxIAccessible(wxAccessible *pAccessible);
// Called to indicate object should prepare to be deleted.
void Quiesce();
DECLARE_IUNKNOWN_METHODS;
// IAccessible
// Navigation and Hierarchy
// Retrieves the child element or child object at a given point on the screen.
// All visual objects support this method; sound objects do not support it.
STDMETHODIMP accHitTest(long xLeft, long yLeft, VARIANT* pVarID);
// Retrieves the specified object's current screen location. All visual objects must
// support this method; sound objects do not support it.
STDMETHODIMP accLocation ( long* pxLeft, long* pyTop, long* pcxWidth, long* pcyHeight, VARIANT varID);
// Traverses to another user interface element within a container and retrieves the object.
// All visual objects must support this method.
STDMETHODIMP accNavigate ( long navDir, VARIANT varStart, VARIANT* pVarEnd);
// Retrieves the address of an IDispatch interface for the specified child.
// All objects must support this property.
STDMETHODIMP get_accChild ( VARIANT varChildID, IDispatch** ppDispChild);
// Retrieves the number of children that belong to this object.
// All objects must support this property.
STDMETHODIMP get_accChildCount ( long* pCountChildren);
// Retrieves the IDispatch interface of the object's parent.
// All objects support this property.
STDMETHODIMP get_accParent ( IDispatch** ppDispParent);
// Descriptive Properties and Methods
// Performs the object's default action. Not all objects have a default
// action.
STDMETHODIMP accDoDefaultAction(VARIANT varID);
// Retrieves a string that describes the object's default action.
// Not all objects have a default action.
STDMETHODIMP get_accDefaultAction ( VARIANT varID, BSTR* pszDefaultAction);
// Retrieves a string that describes the visual appearance of the specified object.
// Not all objects have a description.
STDMETHODIMP get_accDescription ( VARIANT varID, BSTR* pszDescription);
// Retrieves an object's Help property string.
// Not all objects support this property.
STDMETHODIMP get_accHelp ( VARIANT varID, BSTR* pszHelp);
// Retrieves the full path of the WinHelp file associated with the specified
// object and the identifier of the appropriate topic within that file.
// Not all objects support this property.
STDMETHODIMP get_accHelpTopic ( BSTR* pszHelpFile, VARIANT varChild, long* pidTopic);
// Retrieves the specified object's shortcut key or access key, also known as
// the mnemonic. All objects that have a shortcut key or access key support
// this property.
STDMETHODIMP get_accKeyboardShortcut ( VARIANT varID, BSTR* pszKeyboardShortcut);
// Retrieves the name of the specified object.
// All objects support this property.
STDMETHODIMP get_accName ( VARIANT varID, BSTR* pszName);
// Retrieves information that describes the role of the specified object.
// All objects support this property.
STDMETHODIMP get_accRole ( VARIANT varID, VARIANT* pVarRole);
// Retrieves the current state of the specified object.
// All objects support this property.
STDMETHODIMP get_accState ( VARIANT varID, VARIANT* pVarState);
// Retrieves the value of the specified object.
// Not all objects have a value.
STDMETHODIMP get_accValue ( VARIANT varID, BSTR* pszValue);
// Selection and Focus
// Modifies the selection or moves the keyboard focus of the
// specified object. All objects that select or receive the
// keyboard focus must support this method.
STDMETHODIMP accSelect ( long flagsSelect, VARIANT varID );
// Retrieves the object that has the keyboard focus. All objects
// that receive the keyboard focus must support this property.
STDMETHODIMP get_accFocus ( VARIANT* pVarID);
// Retrieves the selected children of this object. All objects
// selected must support this property.
STDMETHODIMP get_accSelection ( VARIANT * pVarChildren);
// Obsolete
STDMETHODIMP put_accName(VARIANT WXUNUSED(varChild), BSTR WXUNUSED(szName)) { return E_FAIL; }
STDMETHODIMP put_accValue(VARIANT WXUNUSED(varChild), BSTR WXUNUSED(szName)) { return E_FAIL; }
// IDispatch
// Get type info
STDMETHODIMP GetTypeInfo(unsigned int typeInfo, LCID lcid, ITypeInfo** ppTypeInfo);
// Get type info count
STDMETHODIMP GetTypeInfoCount(unsigned int* typeInfoCount);
// Get ids of names
STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR** names, unsigned int cNames,
LCID lcid, DISPID* dispId);
// Invoke
STDMETHODIMP Invoke(DISPID dispIdMember, REFIID riid, LCID lcid,
WORD wFlags, DISPPARAMS *pDispParams,
VARIANT *pVarResult, EXCEPINFO *pExcepInfo,
unsigned int *puArgErr );
// Helpers
// Gets the standard IAccessible interface for the given child or object.
// Call Release if this is non-NULL.
IAccessible* GetChildStdAccessible(int id);
// Gets the IAccessible interface for the given child or object.
// Call Release if this is non-NULL.
IAccessible* GetChildAccessible(int id);
private:
wxAccessible *m_pAccessible; // pointer to C++ class we belong to
bool m_bQuiescing; // Object is to be deleted
DECLARE_NO_COPY_CLASS(wxIAccessible)
};
// ============================================================================
// Implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxIAccessible implementation
// ----------------------------------------------------------------------------
BEGIN_IID_TABLE(wxIAccessible)
ADD_IID(Unknown)
ADD_IID(Accessible)
ADD_IID(Dispatch)
END_IID_TABLE;
IMPLEMENT_IUNKNOWN_METHODS(wxIAccessible)
wxIAccessible::wxIAccessible(wxAccessible *pAccessible)
{
wxASSERT( pAccessible != NULL );
m_pAccessible = pAccessible;
m_bQuiescing = false;
}
// Called to indicate object should prepare to be deleted.
void wxIAccessible::Quiesce()
{
m_bQuiescing = true;
m_pAccessible = NULL;
}
// Retrieves the child element or child object at a given point on the screen.
// All visual objects support this method; sound objects do not support it.
STDMETHODIMP wxIAccessible::accHitTest(long xLeft, long yLeft, VARIANT* pVarID)
{
wxLogTrace(wxT("access"), wxT("accHitTest"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
wxAccessible* childObject = NULL;
int childId = 0;
VariantInit(pVarID);
wxAccStatus status = m_pAccessible->HitTest(wxPoint(xLeft, yLeft), & childId, & childObject);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Use standard interface instead.
IAccessible* stdInterface = (IAccessible*)m_pAccessible->GetIAccessibleStd();
if (!stdInterface)
return E_NOTIMPL;
else
return stdInterface->accHitTest(xLeft, yLeft, pVarID);
}
if (childObject)
{
if (childObject == m_pAccessible)
{
pVarID->vt = VT_I4;
pVarID->lVal = CHILDID_SELF;
return S_OK;
}
else
{
wxIAccessible* childIA = childObject->GetIAccessible();
if (!childIA)
return E_NOTIMPL;
if (childIA->QueryInterface(IID_IDispatch, (LPVOID*) & pVarID->pdispVal) != S_OK)
return E_FAIL;
pVarID->vt = VT_DISPATCH;
return S_OK;
}
}
else if (childId > 0)
{
pVarID->vt = VT_I4;
pVarID->lVal = childId;
return S_OK;
}
else
{
pVarID->vt = VT_EMPTY;
return S_FALSE;
}
#if 0
// all cases above already cause some return action so below line
// is unreachable and cause unnecessary warning
return E_NOTIMPL;
#endif
}
// Retrieves the specified object's current screen location. All visual objects must
// support this method; sound objects do not support it.
STDMETHODIMP wxIAccessible::accLocation ( long* pxLeft, long* pyTop, long* pcxWidth, long* pcyHeight, VARIANT varID)
{
wxLogTrace(wxT("access"), wxT("accLocation"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
wxRect rect;
wxAccStatus status = m_pAccessible->GetLocation(rect, varID.lVal);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->accLocation(pxLeft, pyTop, pcxWidth, pcyHeight, varID);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accLocation(pxLeft, pyTop, pcxWidth, pcyHeight, varID);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accLocation(pxLeft, pyTop, pcxWidth, pcyHeight, varID);
}
else
{
*pxLeft = rect.x;
*pyTop = rect.y;
*pcxWidth = rect.width;
*pcyHeight = rect.height;
return S_OK;
}
return E_NOTIMPL;
}
// Traverses to another user interface element within a container and retrieves the object.
// All visual objects must support this method.
STDMETHODIMP wxIAccessible::accNavigate ( long navDir, VARIANT varStart, VARIANT* pVarEnd)
{
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
wxLogTrace(wxT("access"), wxString(wxT("accNavigate for ")) + m_pAccessible->GetWindow()->GetClassInfo()->GetClassName());
if ((varStart.vt != VT_I4 && varStart.vt != VT_EMPTY)
#if 0
// according to MSDN and sources varStart.vt is unsigned
// so below line cause warning "Condition is always false"
|| varStart.vt < 0
#endif
)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for accNavigate"));
return E_INVALIDARG;
}
wxAccessible* elementObject = NULL;
int elementId = 0;
VariantInit(pVarEnd);
wxNavDir navDirWX = wxNAVDIR_FIRSTCHILD;
wxString navStr;
switch (navDir)
{
case NAVDIR_DOWN:
navDirWX = wxNAVDIR_DOWN;
navStr = wxT("wxNAVDIR_DOWN");
break;
case NAVDIR_FIRSTCHILD:
navDirWX = wxNAVDIR_FIRSTCHILD;
navStr = wxT("wxNAVDIR_FIRSTCHILD");
break;
case NAVDIR_LASTCHILD:
navDirWX = wxNAVDIR_LASTCHILD;
navStr = wxT("wxNAVDIR_LASTCHILD");
break;
case NAVDIR_LEFT:
navDirWX = wxNAVDIR_LEFT;
navStr = wxT("wxNAVDIR_LEFT");
break;
case NAVDIR_NEXT:
navDirWX = wxNAVDIR_NEXT;
navStr = wxT("wxNAVDIR_NEXT");
break;
case NAVDIR_PREVIOUS:
navDirWX = wxNAVDIR_PREVIOUS;
navStr = wxT("wxNAVDIR_PREVIOUS");
break;
case NAVDIR_RIGHT:
navDirWX = wxNAVDIR_RIGHT;
navStr = wxT("wxNAVDIR_RIGHT");
break;
case NAVDIR_UP:
navDirWX = wxNAVDIR_UP;
navStr = wxT("wxNAVDIR_UP");
break;
default:
{
wxLogTrace(wxT("access"), wxT("Unknown NAVDIR symbol"));
break;
}
}
wxLogTrace(wxT("access"), navStr);
wxAccStatus status = m_pAccessible->Navigate(navDirWX, varStart.lVal, & elementId,
& elementObject);
if (status == wxACC_FAIL)
{
wxLogTrace(wxT("access"), wxT("wxAccessible::Navigate failed"));
return E_FAIL;
}
if (status == wxACC_FALSE)
{
wxLogTrace(wxT("access"), wxT("wxAccessible::Navigate found no object in this direction"));
return S_FALSE;
}
if (status == wxACC_NOT_IMPLEMENTED)
{
wxLogTrace(wxT("access"), wxT("Navigate not implemented"));
// Try to use child object directly.
if (varStart.vt == VT_I4 && varStart.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varStart.lVal);
if (childAccessible)
{
varStart.lVal = 0;
HRESULT hResult = childAccessible->accNavigate(navDir, varStart, pVarEnd);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accNavigate(navDir, varStart, pVarEnd);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accNavigate(navDir, varStart, pVarEnd);
}
else
{
if (elementObject)
{
wxLogTrace(wxT("access"), wxT("Getting wxIAccessible and calling QueryInterface for Navigate"));
wxIAccessible* objectIA = elementObject->GetIAccessible();
if (!objectIA)
{
wxLogTrace(wxT("access"), wxT("No wxIAccessible"));
return E_FAIL;
}
HRESULT hResult = objectIA->QueryInterface(IID_IDispatch, (LPVOID*) & pVarEnd->pdispVal);
if (hResult != S_OK)
{
wxLogTrace(wxT("access"), wxT("QueryInterface failed"));
return E_FAIL;
}
wxLogTrace(wxT("access"), wxT("Called QueryInterface for Navigate"));
pVarEnd->vt = VT_DISPATCH;
return S_OK;
}
else if (elementId > 0)
{
wxLogTrace(wxT("access"), wxT("Returning element id from Navigate"));
pVarEnd->vt = VT_I4;
pVarEnd->lVal = elementId;
return S_OK;
}
else
{
wxLogTrace(wxT("access"), wxT("No object in accNavigate"));
pVarEnd->vt = VT_EMPTY;
return S_FALSE;
}
}
wxLogTrace(wxT("access"), wxT("Failing Navigate"));
return E_NOTIMPL;
}
// Retrieves the address of an IDispatch interface for the specified child.
// All objects must support this property.
STDMETHODIMP wxIAccessible::get_accChild ( VARIANT varChildID, IDispatch** ppDispChild)
{
wxLogTrace(wxT("access"), wxT("get_accChild"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varChildID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accChild"));
return E_INVALIDARG;
}
if (varChildID.lVal == CHILDID_SELF)
{
*ppDispChild = this;
AddRef();
return S_OK;
}
wxAccessible* child = NULL;
wxAccStatus status = m_pAccessible->GetChild(varChildID.lVal, & child);
if (status == wxACC_FAIL)
{
wxLogTrace(wxT("access"), wxT("GetChild failed"));
return E_FAIL;
}
if (status == wxACC_NOT_IMPLEMENTED)
{
// Use standard interface instead.
IAccessible* stdInterface = (IAccessible*)m_pAccessible->GetIAccessibleStd();
if (!stdInterface)
return E_NOTIMPL;
else
{
wxLogTrace(wxT("access"), wxT("Using standard interface for get_accChild"));
return stdInterface->get_accChild (varChildID, ppDispChild);
}
}
else
{
if (child)
{
wxIAccessible* objectIA = child->GetIAccessible();
if (!objectIA)
return E_NOTIMPL;
if (objectIA->QueryInterface(IID_IDispatch, (LPVOID*) ppDispChild) != S_OK)
{
wxLogTrace(wxT("access"), wxT("QueryInterface failed in get_accChild"));
return E_FAIL;
}
return S_OK;
}
else
{
wxLogTrace(wxT("access"), wxT("Not an accessible object"));
return S_FALSE; // Indicates it's not an accessible object
}
}
#if 0
// all cases above already cause some return action so below line
// is unreachable and cause unnecessary warning
return E_NOTIMPL;
#endif
}
// Retrieves the number of children that belong to this object.
// All objects must support this property.
STDMETHODIMP wxIAccessible::get_accChildCount ( long* pCountChildren)
{
wxLogTrace(wxT("access"), wxT("get_accChildCount"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
int childCount = 0;
wxAccStatus status = m_pAccessible->GetChildCount(& childCount);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Use standard interface instead.
IAccessible* stdInterface = (IAccessible*)m_pAccessible->GetIAccessibleStd();
if (!stdInterface)
return E_NOTIMPL;
else
{
wxLogTrace(wxT("access"), wxT("Using standard interface for get_accChildCount"));
HRESULT res = stdInterface->get_accChildCount (pCountChildren);
wxString str;
str.Printf(wxT("Number of children was %d"), (int) (*pCountChildren));
wxLogTrace(wxT("access"), str);
return res;
}
}
else
{
* pCountChildren = (long) childCount;
return S_OK;
}
#if 0
// all cases above already cause some return action so below line
// is unreachable and cause unnecessary warning
return E_NOTIMPL;
#endif
}
// Retrieves the IDispatch interface of the object's parent.
// All objects support this property.
STDMETHODIMP wxIAccessible::get_accParent ( IDispatch** ppDispParent)
{
wxLogTrace(wxT("access"), wxT("get_accParent"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
wxAccessible* parent = NULL;
wxAccStatus status = m_pAccessible->GetParent(& parent);
if (status == wxACC_FAIL)
return E_FAIL;
// It doesn't seem acceptable to return S_FALSE with a NULL
// ppDispParent, so if we have no wxWidgets parent, we leave
// it to the standard interface.
if (status == wxACC_NOT_IMPLEMENTED || !parent)
{
wxLogTrace(wxT("access"), wxT("Using standard interface to get the parent."));
// Use standard interface instead.
IAccessible* stdInterface = (IAccessible*)m_pAccessible->GetIAccessibleStd();
if (!stdInterface)
return E_NOTIMPL;
else
return stdInterface->get_accParent (ppDispParent);
}
else
{
if (parent)
{
wxIAccessible* objectIA = parent->GetIAccessible();
if (!objectIA)
return E_FAIL;
wxLogTrace(wxT("access"), wxT("About to call QueryInterface"));
if (objectIA->QueryInterface(IID_IDispatch, (LPVOID*) ppDispParent) != S_OK)
{
wxLogTrace(wxT("access"), wxT("Failed QueryInterface"));
return E_FAIL;
}
wxLogTrace(wxT("access"), wxT("Returning S_OK for get_accParent"));
return S_OK;
}
else
{
// This doesn't seem to be allowed, despite the documentation,
// so we handle it higher up by using the standard interface.
wxLogTrace(wxT("access"), wxT("Returning NULL parent because there was none"));
*ppDispParent = NULL;
return S_FALSE;
}
}
#if 0
// all cases above already cause some return action so below line
// is unreachable and cause unnecessary warning
return E_NOTIMPL;
#endif
}
// Performs the object's default action. Not all objects have a default
// action.
STDMETHODIMP wxIAccessible::accDoDefaultAction(VARIANT varID)
{
wxLogTrace(wxT("access"), wxT("accDoDefaultAction"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for accDoDefaultAction"));
return E_INVALIDARG;
}
wxAccStatus status = m_pAccessible->DoDefaultAction(varID.lVal);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_SUPPORTED)
return DISP_E_MEMBERNOTFOUND;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->accDoDefaultAction(varID);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accDoDefaultAction(varID);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accDoDefaultAction(varID);
}
return E_FAIL;
}
// Retrieves a string that describes the object's default action.
// Not all objects have a default action.
STDMETHODIMP wxIAccessible::get_accDefaultAction ( VARIANT varID, BSTR* pszDefaultAction)
{
wxLogTrace(wxT("access"), wxT("get_accDefaultAction"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accDefaultAction"));
return E_INVALIDARG;
}
wxString defaultAction;
wxAccStatus status = m_pAccessible->GetDefaultAction(varID.lVal, & defaultAction);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_SUPPORTED)
return DISP_E_MEMBERNOTFOUND;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accDefaultAction(varID, pszDefaultAction);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accDefaultAction(varID, pszDefaultAction);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accDefaultAction(varID, pszDefaultAction);
}
else
{
if (defaultAction.IsEmpty())
{
* pszDefaultAction = NULL;
return S_FALSE;
}
else
{
wxBasicString basicString(defaultAction);
* pszDefaultAction = basicString.Get();
return S_OK;
}
}
return E_FAIL;
}
// Retrieves a string that describes the visual appearance of the specified object.
// Not all objects have a description.
STDMETHODIMP wxIAccessible::get_accDescription ( VARIANT varID, BSTR* pszDescription)
{
wxLogTrace(wxT("access"), wxT("get_accDescription"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accDescription"));
return E_INVALIDARG;
}
wxString description;
wxAccStatus status = m_pAccessible->GetDescription(varID.lVal, & description);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accDescription(varID, pszDescription);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accDescription(varID, pszDescription);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accDescription(varID, pszDescription);
}
else
{
if (description.empty())
{
* pszDescription = NULL;
return S_FALSE;
}
else
{
wxBasicString basicString(description);
* pszDescription = basicString.Get();
return S_OK;
}
}
return E_NOTIMPL;
}
// Retrieves an object's Help property string.
// Not all objects support this property.
STDMETHODIMP wxIAccessible::get_accHelp ( VARIANT varID, BSTR* pszHelp)
{
wxLogTrace(wxT("access"), wxT("get_accHelp"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accHelp"));
return E_INVALIDARG;
}
wxString helpString;
wxAccStatus status = m_pAccessible->GetHelpText(varID.lVal, & helpString);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accHelp(varID, pszHelp);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accHelp(varID, pszHelp);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accHelp (varID, pszHelp);
}
else
{
if (helpString.empty())
{
* pszHelp = NULL;
return S_FALSE;
}
else
{
wxBasicString basicString(helpString);
* pszHelp = basicString.Get();
return S_OK;
}
}
return E_NOTIMPL;
}
// Retrieves the full path of the WinHelp file associated with the specified
// object and the identifier of the appropriate topic within that file.
// Not all objects support this property.
// NOTE: not supported by wxWidgets at this time. Use
// GetHelpText instead.
STDMETHODIMP wxIAccessible::get_accHelpTopic ( BSTR* pszHelpFile, VARIANT varChild, long* pidTopic)
{
wxLogTrace(wxT("access"), wxT("get_accHelpTopic"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varChild.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accHelpTopic"));
return E_INVALIDARG;
}
wxAccStatus status = wxACC_NOT_IMPLEMENTED;
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varChild.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varChild.lVal);
if (childAccessible)
{
varChild.lVal = 0;
HRESULT hResult = childAccessible->get_accHelpTopic(pszHelpFile, varChild, pidTopic);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accHelpTopic(pszHelpFile, varChild, pidTopic);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accHelpTopic (pszHelpFile, varChild, pidTopic);
}
return E_NOTIMPL;
}
// Retrieves the specified object's shortcut key or access key, also known as
// the mnemonic. All objects that have a shortcut key or access key support
// this property.
STDMETHODIMP wxIAccessible::get_accKeyboardShortcut ( VARIANT varID, BSTR* pszKeyboardShortcut)
{
wxLogTrace(wxT("access"), wxT("get_accKeyboardShortcut"));
*pszKeyboardShortcut = NULL;
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accKeyboardShortcut"));
return E_INVALIDARG;
}
wxString keyboardShortcut;
wxAccStatus status = m_pAccessible->GetKeyboardShortcut(varID.lVal, & keyboardShortcut);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accKeyboardShortcut(varID, pszKeyboardShortcut);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accKeyboardShortcut(varID, pszKeyboardShortcut);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accKeyboardShortcut (varID, pszKeyboardShortcut);
}
else
{
if (keyboardShortcut.empty())
{
* pszKeyboardShortcut = NULL;
return S_FALSE;
}
else
{
wxBasicString basicString(keyboardShortcut);
* pszKeyboardShortcut = basicString.Get();
return S_OK;
}
}
return E_NOTIMPL;
}
// Retrieves the name of the specified object.
// All objects support this property.
STDMETHODIMP wxIAccessible::get_accName ( VARIANT varID, BSTR* pszName)
{
wxLogTrace(wxT("access"), wxT("get_accName"));
*pszName = NULL;
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accName"));
return E_INVALIDARG;
}
wxString name;
wxAccStatus status = m_pAccessible->GetName(varID.lVal, & name);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accName(varID, pszName);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accName(varID, pszName);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accName (varID, pszName);
}
else
{
wxBasicString basicString(name);
*pszName = basicString.Get();
return S_OK;
}
return E_NOTIMPL;
}
// Retrieves information that describes the role of the specified object.
// All objects support this property.
STDMETHODIMP wxIAccessible::get_accRole ( VARIANT varID, VARIANT* pVarRole)
{
wxLogTrace(wxT("access"), wxT("get_accRole"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accRole"));
return E_INVALIDARG;
}
VariantInit(pVarRole);
wxAccRole role = wxROLE_NONE;
wxAccStatus status = m_pAccessible->GetRole(varID.lVal, & role);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accRole(varID, pVarRole);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accRole(varID, pVarRole);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accRole (varID, pVarRole);
}
else
{
if (role == wxROLE_NONE)
{
pVarRole->vt = VT_EMPTY;
return S_OK;
}
pVarRole->lVal = wxConvertToWindowsRole(role);
pVarRole->vt = VT_I4;
return S_OK;
}
return E_NOTIMPL;
}
// Retrieves the current state of the specified object.
// All objects support this property.
STDMETHODIMP wxIAccessible::get_accState ( VARIANT varID, VARIANT* pVarState)
{
wxLogTrace(wxT("access"), wxT("get_accState"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4 && varID.vt != VT_EMPTY)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accState"));
return E_INVALIDARG;
}
long wxstate = 0;
wxAccStatus status = m_pAccessible->GetState(varID.lVal, & wxstate);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accState(varID, pVarState);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accState(varID, pVarState);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accState (varID, pVarState);
}
else
{
long state = wxConvertToWindowsState(wxstate);
pVarState->lVal = state;
pVarState->vt = VT_I4;
return S_OK;
}
return E_NOTIMPL;
}
// Retrieves the value of the specified object.
// Not all objects have a value.
STDMETHODIMP wxIAccessible::get_accValue ( VARIANT varID, BSTR* pszValue)
{
wxLogTrace(wxT("access"), wxT("get_accValue"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for get_accValue"));
return E_INVALIDARG;
}
wxString strValue;
wxAccStatus status = m_pAccessible->GetValue(varID.lVal, & strValue);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->get_accValue(varID, pszValue);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accValue(varID, pszValue);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->get_accValue (varID, pszValue);
}
else
{
wxBasicString basicString(strValue);
* pszValue = basicString.Get();
return S_OK;
}
return E_NOTIMPL;
}
// Modifies the selection or moves the keyboard focus of the
// specified object. All objects that select or receive the
// keyboard focus must support this method.
STDMETHODIMP wxIAccessible::accSelect ( long flagsSelect, VARIANT varID )
{
wxLogTrace(wxT("access"), wxT("get_accSelect"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
if (varID.vt != VT_I4 && varID.vt != VT_EMPTY)
{
wxLogTrace(wxT("access"), wxT("Invalid arg for accSelect"));
return E_INVALIDARG;
}
wxAccSelectionFlags wxsel = wxConvertFromWindowsSelFlag(flagsSelect);
wxAccStatus status = m_pAccessible->Select(varID.lVal, wxsel);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Try to use child object directly.
if (varID.lVal > 0 && varID.lVal > 0)
{
IAccessible* childAccessible = GetChildAccessible(varID.lVal);
if (childAccessible)
{
varID.lVal = 0;
HRESULT hResult = childAccessible->accSelect(flagsSelect, varID);
childAccessible->Release();
return hResult;
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accSelect(flagsSelect, varID);
}
else if (m_pAccessible->GetIAccessibleStd())
return ((IAccessible*) m_pAccessible->GetIAccessibleStd())->accSelect(flagsSelect, varID);
}
else
return S_OK;
return E_NOTIMPL;
}
// Retrieves the object that has the keyboard focus. All objects
// that receive the keyboard focus must support this property.
STDMETHODIMP wxIAccessible::get_accFocus ( VARIANT* pVarID)
{
wxLogTrace(wxT("access"), wxT("get_accFocus"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
wxAccessible* childObject = NULL;
int childId = 0;
VariantInit(pVarID);
wxAccStatus status = m_pAccessible->GetFocus(& childId, & childObject);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Use standard interface instead.
IAccessible* stdInterface = (IAccessible*)m_pAccessible->GetIAccessibleStd();
if (!stdInterface)
return E_NOTIMPL;
else
return stdInterface->get_accFocus (pVarID);
}
if (childObject)
{
if (childObject == m_pAccessible)
{
pVarID->vt = VT_I4;
pVarID->lVal = CHILDID_SELF;
return S_OK; }
else
{
wxIAccessible* childIA = childObject->GetIAccessible();
if (!childIA)
return E_NOTIMPL;
if (childIA->QueryInterface(IID_IDispatch, (LPVOID*) & pVarID->pdispVal) != S_OK)
return E_FAIL;
pVarID->vt = VT_DISPATCH;
return S_OK;
}
}
else if (childId > 0)
{
pVarID->vt = VT_I4;
pVarID->lVal = childId;
return S_OK;
}
else
{
pVarID->vt = VT_EMPTY;
return S_FALSE;
}
#if 0
// all cases above already cause some return action so below line
// is unreachable and cause unnecessary warning
return E_NOTIMPL;
#endif
}
// Retrieves the selected children of this object. All objects
// selected must support this property.
STDMETHODIMP wxIAccessible::get_accSelection ( VARIANT * pVarChildren)
{
#if wxUSE_VARIANT
wxLogTrace(wxT("access"), wxT("get_accSelection"));
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
VariantInit(pVarChildren);
wxVariant selections;
wxAccStatus status = m_pAccessible->GetSelections(& selections);
if (status == wxACC_FAIL)
return E_FAIL;
if (status == wxACC_NOT_IMPLEMENTED)
{
// Use standard interface instead.
IAccessible* stdInterface = (IAccessible*)m_pAccessible->GetIAccessibleStd();
if (!stdInterface)
return E_NOTIMPL;
else
return stdInterface->get_accSelection (pVarChildren);
}
else
{
if (selections.GetType() == wxT("long"))
{
pVarChildren->vt = VT_I4;
pVarChildren->lVal = selections.GetLong();
return S_OK;
}
else if (selections.GetType() == wxT("void*"))
{
wxAccessible* childObject = (wxAccessible*) selections.GetVoidPtr();
wxIAccessible* childIA = childObject->GetIAccessible();
if (!childIA)
return E_NOTIMPL;
if (childIA->QueryInterface(IID_IDispatch, (LPVOID*) & pVarChildren->pdispVal) != S_OK)
return E_FAIL;
pVarChildren->vt = VT_DISPATCH;
return S_OK;
}
else if (selections.GetType() == wxT("list"))
{
// TODO: should we AddRef for every "void*" member??
wxIEnumVARIANT* enumVariant = new wxIEnumVARIANT(selections);
enumVariant->AddRef();
pVarChildren->vt = VT_UNKNOWN;
pVarChildren->punkVal = enumVariant;
return S_OK;
}
}
#else
wxUnusedVar(pVarChildren);
#endif // wxUSE_VARIANT
return E_NOTIMPL;
}
// Get type info
STDMETHODIMP wxIAccessible::GetTypeInfo(unsigned int WXUNUSED(typeInfo), LCID WXUNUSED(lcid), ITypeInfo** ppTypeInfo)
{
*ppTypeInfo = NULL;
return E_NOTIMPL;
}
// Get type info count
STDMETHODIMP wxIAccessible::GetTypeInfoCount(unsigned int* typeInfoCount)
{
*typeInfoCount = 0;
return E_NOTIMPL;
}
// Get ids of names
STDMETHODIMP wxIAccessible::GetIDsOfNames(REFIID WXUNUSED(riid), OLECHAR** WXUNUSED(names), unsigned int WXUNUSED(cNames),
LCID WXUNUSED(lcid), DISPID* WXUNUSED(dispId))
{
return E_NOTIMPL;
}
// Invoke
STDMETHODIMP wxIAccessible::Invoke(DISPID WXUNUSED(dispIdMember), REFIID WXUNUSED(riid), LCID WXUNUSED(lcid),
WORD WXUNUSED(wFlags), DISPPARAMS *WXUNUSED(pDispParams),
VARIANT *WXUNUSED(pVarResult), EXCEPINFO *WXUNUSED(pExcepInfo),
unsigned int *WXUNUSED(puArgErr) )
{
return E_NOTIMPL;
}
// Gets the standard IAccessible interface for the given child or object.
// Call Release if this is non-NULL.
IAccessible* wxIAccessible::GetChildStdAccessible(int id)
{
if (id == 0)
{
IAccessible* obj = (IAccessible*)m_pAccessible->GetIAccessibleStd();
obj->AddRef();
return obj;
}
else
{
VARIANT var;
VariantInit(& var);
var.vt = VT_I4;
var.lVal = id;
IDispatch* pDispatch = NULL;
if (S_OK == get_accChild ( var, & pDispatch))
{
IAccessible* childAccessible = NULL;
if (pDispatch->QueryInterface(IID_IAccessible, (LPVOID*) & childAccessible) == S_OK)
{
pDispatch->Release();
wxIAccessible* c = (wxIAccessible*) childAccessible;
IAccessible* stdChildAccessible = (IAccessible*) c->m_pAccessible->GetIAccessibleStd();
stdChildAccessible->AddRef();
childAccessible->Release();
return stdChildAccessible;
}
else
{
pDispatch->Release();
}
}
}
#if 0
{
// Loop until we find the right id
long nChildren = 0;
this->get_accChildCount(& nChildren);
int i;
for (i = 0; i < nChildren; i++)
{
long obtained = 0;
VARIANT var;
VariantInit(& var);
var.vt = VT_I4;
if (S_OK == AccessibleChildren(this, i, 1, & var, &obtained))
{
if (var.lVal == id)
{
VariantInit(& var);
var.vt = VT_DISPATCH;
if (S_OK == AccessibleChildren(this, i, 1, & var, &obtained))
{
IAccessible* childAccessible = NULL;
if (var.pdispVal->QueryInterface(IID_IAccessible, (LPVOID*) & childAccessible) == S_OK)
{
var.pdispVal->Release();
return childAccessible;
}
else
{
var.pdispVal->Release();
}
}
}
break;
}
}
}
#endif
return NULL;
}
// Gets the IAccessible interface for the given child or object.
// Call Release if this is non-NULL.
IAccessible* wxIAccessible::GetChildAccessible(int id)
{
if (id == 0)
{
IAccessible* obj = this;
obj->AddRef();
return obj;
}
else
{
VARIANT var;
VariantInit(& var);
var.vt = VT_I4;
var.lVal = id;
IDispatch* pDispatch = NULL;
if (S_OK == get_accChild ( var, & pDispatch))
{
IAccessible* childAccessible = NULL;
if (pDispatch->QueryInterface(IID_IAccessible, (LPVOID*) & childAccessible) == S_OK)
{
pDispatch->Release();
return childAccessible;
}
else
{
pDispatch->Release();
}
}
}
return NULL;
}
// ----------------------------------------------------------------------------
// wxAccessible implementation
// ----------------------------------------------------------------------------
// ctors
// common part of all ctors
void wxAccessible::Init()
{
m_pIAccessibleStd = NULL;
m_pIAccessible = new wxIAccessible(this);
m_pIAccessible->AddRef();
}
wxAccessible::wxAccessible(wxWindow* win)
: wxAccessibleBase(win)
{
Init();
}
wxAccessible::~wxAccessible()
{
m_pIAccessible->Quiesce();
m_pIAccessible->Release();
if (m_pIAccessibleStd)
((IAccessible*)m_pIAccessibleStd)->Release();
}
// Gets or creates a standard interface for this object.
void* wxAccessible::GetIAccessibleStd()
{
if (m_pIAccessibleStd)
return m_pIAccessibleStd;
if (GetWindow())
{
HRESULT retCode = ::CreateStdAccessibleObject((HWND) GetWindow()->GetHWND(),
OBJID_CLIENT, IID_IAccessible, (void**) & m_pIAccessibleStd);
if (retCode == S_OK)
return m_pIAccessibleStd;
else
{
m_pIAccessibleStd = NULL;
return NULL;
}
}
return NULL;
}
// Sends an event when something changes in an accessible object.
void wxAccessible::NotifyEvent(int eventType, wxWindow* window, wxAccObject objectType,
int objectId)
{
::NotifyWinEvent((DWORD) eventType, (HWND) window->GetHWND(),
(LONG) objectType, (LONG) objectId);
}
// Utilities
// Convert to Windows role
int wxConvertToWindowsRole(wxAccRole wxrole)
{
switch (wxrole)
{
case wxROLE_NONE:
return 0;
case wxROLE_SYSTEM_ALERT:
return ROLE_SYSTEM_ALERT;
case wxROLE_SYSTEM_ANIMATION:
return ROLE_SYSTEM_ANIMATION;
case wxROLE_SYSTEM_APPLICATION:
return ROLE_SYSTEM_APPLICATION;
case wxROLE_SYSTEM_BORDER:
return ROLE_SYSTEM_BORDER;
case wxROLE_SYSTEM_BUTTONDROPDOWN:
return ROLE_SYSTEM_BUTTONDROPDOWN;
case wxROLE_SYSTEM_BUTTONDROPDOWNGRID:
return ROLE_SYSTEM_BUTTONDROPDOWNGRID;
case wxROLE_SYSTEM_BUTTONMENU:
return ROLE_SYSTEM_BUTTONMENU;
case wxROLE_SYSTEM_CARET:
return ROLE_SYSTEM_CARET;
case wxROLE_SYSTEM_CELL:
return ROLE_SYSTEM_CELL;
case wxROLE_SYSTEM_CHARACTER:
return ROLE_SYSTEM_CHARACTER;
case wxROLE_SYSTEM_CHART:
return ROLE_SYSTEM_CHART;
case wxROLE_SYSTEM_CHECKBUTTON:
return ROLE_SYSTEM_CHECKBUTTON;
case wxROLE_SYSTEM_CLIENT:
return ROLE_SYSTEM_CLIENT;
case wxROLE_SYSTEM_CLOCK:
return ROLE_SYSTEM_CLOCK;
case wxROLE_SYSTEM_COLUMN:
return ROLE_SYSTEM_COLUMN;
case wxROLE_SYSTEM_COLUMNHEADER:
return ROLE_SYSTEM_COLUMNHEADER;
case wxROLE_SYSTEM_COMBOBOX:
return ROLE_SYSTEM_COMBOBOX;
case wxROLE_SYSTEM_CURSOR:
return ROLE_SYSTEM_CURSOR;
case wxROLE_SYSTEM_DIAGRAM:
return ROLE_SYSTEM_DIAGRAM;
case wxROLE_SYSTEM_DIAL:
return ROLE_SYSTEM_DIAL;
case wxROLE_SYSTEM_DIALOG:
return ROLE_SYSTEM_DIALOG;
case wxROLE_SYSTEM_DOCUMENT:
return ROLE_SYSTEM_DOCUMENT;
case wxROLE_SYSTEM_DROPLIST:
return ROLE_SYSTEM_DROPLIST;
case wxROLE_SYSTEM_EQUATION:
return ROLE_SYSTEM_EQUATION;
case wxROLE_SYSTEM_GRAPHIC:
return ROLE_SYSTEM_GRAPHIC;
case wxROLE_SYSTEM_GRIP:
return ROLE_SYSTEM_GRIP;
case wxROLE_SYSTEM_GROUPING:
return ROLE_SYSTEM_GROUPING;
case wxROLE_SYSTEM_HELPBALLOON:
return ROLE_SYSTEM_HELPBALLOON;
case wxROLE_SYSTEM_HOTKEYFIELD:
return ROLE_SYSTEM_HOTKEYFIELD;
case wxROLE_SYSTEM_INDICATOR:
return ROLE_SYSTEM_INDICATOR;
case wxROLE_SYSTEM_LINK:
return ROLE_SYSTEM_LINK;
case wxROLE_SYSTEM_LIST:
return ROLE_SYSTEM_LIST;
case wxROLE_SYSTEM_LISTITEM:
return ROLE_SYSTEM_LISTITEM;
case wxROLE_SYSTEM_MENUBAR:
return ROLE_SYSTEM_MENUBAR;
case wxROLE_SYSTEM_MENUITEM:
return ROLE_SYSTEM_MENUITEM;
case wxROLE_SYSTEM_MENUPOPUP:
return ROLE_SYSTEM_MENUPOPUP;
case wxROLE_SYSTEM_OUTLINE:
return ROLE_SYSTEM_OUTLINE;
case wxROLE_SYSTEM_OUTLINEITEM:
return ROLE_SYSTEM_OUTLINEITEM;
case wxROLE_SYSTEM_PAGETAB:
return ROLE_SYSTEM_PAGETAB;
case wxROLE_SYSTEM_PAGETABLIST:
return ROLE_SYSTEM_PAGETABLIST;
case wxROLE_SYSTEM_PANE:
return ROLE_SYSTEM_PANE;
case wxROLE_SYSTEM_PROGRESSBAR:
return ROLE_SYSTEM_PROGRESSBAR;
case wxROLE_SYSTEM_PROPERTYPAGE:
return ROLE_SYSTEM_PROPERTYPAGE;
case wxROLE_SYSTEM_PUSHBUTTON:
return ROLE_SYSTEM_PUSHBUTTON;
case wxROLE_SYSTEM_RADIOBUTTON:
return ROLE_SYSTEM_RADIOBUTTON;
case wxROLE_SYSTEM_ROW:
return ROLE_SYSTEM_ROW;
case wxROLE_SYSTEM_ROWHEADER:
return ROLE_SYSTEM_ROWHEADER;
case wxROLE_SYSTEM_SCROLLBAR:
return ROLE_SYSTEM_SCROLLBAR;
case wxROLE_SYSTEM_SEPARATOR:
return ROLE_SYSTEM_SEPARATOR;
case wxROLE_SYSTEM_SLIDER:
return ROLE_SYSTEM_SLIDER;
case wxROLE_SYSTEM_SOUND:
return ROLE_SYSTEM_SOUND;
case wxROLE_SYSTEM_SPINBUTTON:
return ROLE_SYSTEM_SPINBUTTON;
case wxROLE_SYSTEM_STATICTEXT:
return ROLE_SYSTEM_STATICTEXT;
case wxROLE_SYSTEM_STATUSBAR:
return ROLE_SYSTEM_STATUSBAR;
case wxROLE_SYSTEM_TABLE:
return ROLE_SYSTEM_TABLE;
case wxROLE_SYSTEM_TEXT:
return ROLE_SYSTEM_TEXT;
case wxROLE_SYSTEM_TITLEBAR:
return ROLE_SYSTEM_TITLEBAR;
case wxROLE_SYSTEM_TOOLBAR:
return ROLE_SYSTEM_TOOLBAR;
case wxROLE_SYSTEM_TOOLTIP:
return ROLE_SYSTEM_TOOLTIP;
case wxROLE_SYSTEM_WHITESPACE:
return ROLE_SYSTEM_WHITESPACE;
case wxROLE_SYSTEM_WINDOW:
return ROLE_SYSTEM_WINDOW;
}
return 0;
}
// Convert to Windows state
long wxConvertToWindowsState(long wxstate)
{
long state = 0;
if (wxstate & wxACC_STATE_SYSTEM_ALERT_HIGH)
state |= STATE_SYSTEM_ALERT_HIGH;
if (wxstate & wxACC_STATE_SYSTEM_ALERT_MEDIUM)
state |= STATE_SYSTEM_ALERT_MEDIUM;
if (wxstate & wxACC_STATE_SYSTEM_ALERT_LOW)
state |= STATE_SYSTEM_ALERT_LOW;
if (wxstate & wxACC_STATE_SYSTEM_ANIMATED)
state |= STATE_SYSTEM_ANIMATED;
if (wxstate & wxACC_STATE_SYSTEM_BUSY)
state |= STATE_SYSTEM_BUSY;
if (wxstate & wxACC_STATE_SYSTEM_CHECKED)
state |= STATE_SYSTEM_CHECKED;
if (wxstate & wxACC_STATE_SYSTEM_COLLAPSED)
state |= STATE_SYSTEM_COLLAPSED;
if (wxstate & wxACC_STATE_SYSTEM_DEFAULT)
state |= STATE_SYSTEM_DEFAULT;
if (wxstate & wxACC_STATE_SYSTEM_EXPANDED)
state |= STATE_SYSTEM_EXPANDED;
if (wxstate & wxACC_STATE_SYSTEM_EXTSELECTABLE)
state |= STATE_SYSTEM_EXTSELECTABLE;
if (wxstate & wxACC_STATE_SYSTEM_FLOATING)
state |= STATE_SYSTEM_FLOATING;
if (wxstate & wxACC_STATE_SYSTEM_FOCUSABLE)
state |= STATE_SYSTEM_FOCUSABLE;
if (wxstate & wxACC_STATE_SYSTEM_FOCUSED)
state |= STATE_SYSTEM_FOCUSED;
if (wxstate & wxACC_STATE_SYSTEM_HOTTRACKED)
state |= STATE_SYSTEM_HOTTRACKED;
if (wxstate & wxACC_STATE_SYSTEM_INVISIBLE)
state |= STATE_SYSTEM_INVISIBLE;
if (wxstate & wxACC_STATE_SYSTEM_INVISIBLE)
state |= STATE_SYSTEM_INVISIBLE;
if (wxstate & wxACC_STATE_SYSTEM_MIXED)
state |= STATE_SYSTEM_MIXED;
if (wxstate & wxACC_STATE_SYSTEM_MULTISELECTABLE)
state |= STATE_SYSTEM_MULTISELECTABLE;
if (wxstate & wxACC_STATE_SYSTEM_OFFSCREEN)
state |= STATE_SYSTEM_OFFSCREEN;
if (wxstate & wxACC_STATE_SYSTEM_PRESSED)
state |= STATE_SYSTEM_PRESSED;
// if (wxstate & wxACC_STATE_SYSTEM_PROTECTED)
// state |= STATE_SYSTEM_PROTECTED;
if (wxstate & wxACC_STATE_SYSTEM_READONLY)
state |= STATE_SYSTEM_READONLY;
if (wxstate & wxACC_STATE_SYSTEM_SELECTABLE)
state |= STATE_SYSTEM_SELECTABLE;
if (wxstate & wxACC_STATE_SYSTEM_SELECTED)
state |= STATE_SYSTEM_SELECTED;
if (wxstate & wxACC_STATE_SYSTEM_SELFVOICING)
state |= STATE_SYSTEM_SELFVOICING;
if (wxstate & wxACC_STATE_SYSTEM_UNAVAILABLE)
state |= STATE_SYSTEM_UNAVAILABLE;
return state;
}
// Convert to Windows selection flag
int wxConvertToWindowsSelFlag(wxAccSelectionFlags wxsel)
{
int sel = 0;
if (wxsel & wxACC_SEL_TAKEFOCUS)
sel |= SELFLAG_TAKEFOCUS;
if (wxsel & wxACC_SEL_TAKESELECTION)
sel |= SELFLAG_TAKESELECTION;
if (wxsel & wxACC_SEL_EXTENDSELECTION)
sel |= SELFLAG_EXTENDSELECTION;
if (wxsel & wxACC_SEL_ADDSELECTION)
sel |= SELFLAG_ADDSELECTION;
if (wxsel & wxACC_SEL_REMOVESELECTION)
sel |= SELFLAG_REMOVESELECTION;
return sel;
}
// Convert from Windows selection flag
wxAccSelectionFlags wxConvertFromWindowsSelFlag(int sel)
{
int wxsel = 0;
if (sel & SELFLAG_TAKEFOCUS)
wxsel |= wxACC_SEL_TAKEFOCUS;
if (sel & SELFLAG_TAKESELECTION)
wxsel |= wxACC_SEL_TAKESELECTION;
if (sel & SELFLAG_EXTENDSELECTION)
wxsel |= wxACC_SEL_EXTENDSELECTION;
if (sel & SELFLAG_ADDSELECTION)
wxsel |= wxACC_SEL_ADDSELECTION;
if (sel & SELFLAG_REMOVESELECTION)
wxsel |= wxACC_SEL_REMOVESELECTION;
return (wxAccSelectionFlags) wxsel;
}
#endif // wxUSE_OLE && wxUSE_ACCESSIBILITY