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Sweden-Number/dlls/oleacc/main.c

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/*
* Implementation of the OLEACC dll
*
* Copyright 2003 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define COBJMACROS
#include "initguid.h"
#include "oleacc_private.h"
#include "resource.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(oleacc);
static const WCHAR lresult_atom_prefix[] = {'w','i','n','e','_','o','l','e','a','c','c',':'};
extern HRESULT WINAPI OLEACC_DllGetClassObject(REFCLSID, REFIID, void**) DECLSPEC_HIDDEN;
extern BOOL WINAPI OLEACC_DllMain(HINSTANCE, DWORD, void*) DECLSPEC_HIDDEN;
extern HRESULT WINAPI OLEACC_DllRegisterServer(void) DECLSPEC_HIDDEN;
extern HRESULT WINAPI OLEACC_DllUnregisterServer(void) DECLSPEC_HIDDEN;
static HINSTANCE oleacc_handle = 0;
int convert_child_id(VARIANT *v)
{
switch(V_VT(v)) {
case VT_I4:
return V_I4(v);
default:
FIXME("unhandled child ID variant type: %d\n", V_VT(v));
return -1;
}
}
const struct win_class_data* find_class_data(HWND hwnd, const struct win_class_data *classes)
{
WCHAR class_name[64];
int i, idx;
if(!RealGetWindowClassW(hwnd, class_name, ARRAY_SIZE(class_name)))
return NULL;
TRACE("got window class: %s\n", debugstr_w(class_name));
for(i=0; classes[i].name; i++) {
if(!wcsicmp(class_name, classes[i].name)) {
if(classes[i].stub)
FIXME("unhandled window class: %s\n", debugstr_w(class_name));
return &classes[i];
}
}
idx = SendMessageW(hwnd, WM_GETOBJECT, 0, OBJID_QUERYCLASSNAMEIDX);
if(idx) {
for(i=0; classes[i].name; i++) {
if(idx == classes[i].idx) {
if(classes[i].stub)
FIXME("unhandled window class: %s\n", debugstr_w(class_name));
return &classes[i];
}
}
WARN("unhandled class name idx: %x\n", idx);
}
return NULL;
}
HRESULT WINAPI CreateStdAccessibleObject( HWND hwnd, LONG idObject,
REFIID riidInterface, void** ppvObject )
{
TRACE("%p %ld %s %p\n", hwnd, idObject,
debugstr_guid( riidInterface ), ppvObject );
switch(idObject) {
case OBJID_CLIENT:
return create_client_object(hwnd, riidInterface, ppvObject);
case OBJID_WINDOW:
return create_window_object(hwnd, riidInterface, ppvObject);
default:
FIXME("unhandled object id: %ld\n", idObject);
return E_NOTIMPL;
}
}
HRESULT WINAPI ObjectFromLresult( LRESULT result, REFIID riid, WPARAM wParam, void **ppObject )
{
WCHAR atom_str[ARRAY_SIZE(lresult_atom_prefix)+3*8+3];
HANDLE server_proc, server_mapping, mapping;
DWORD proc_id, size;
IStream *stream;
HGLOBAL data;
void *view;
HRESULT hr;
WCHAR *p;
TRACE("%Id %s %Id %p\n", result, debugstr_guid(riid), wParam, ppObject );
if(wParam)
FIXME("unsupported wParam = %Ix\n", wParam);
if(!ppObject)
return E_INVALIDARG;
*ppObject = NULL;
if(result != (ATOM)result)
return E_FAIL;
if(!GlobalGetAtomNameW(result, atom_str, ARRAY_SIZE(atom_str)))
return E_FAIL;
if(memcmp(atom_str, lresult_atom_prefix, sizeof(lresult_atom_prefix)))
return E_FAIL;
p = atom_str + ARRAY_SIZE(lresult_atom_prefix);
proc_id = wcstoul(p, &p, 16);
if(*p != ':')
return E_FAIL;
server_mapping = ULongToHandle( wcstoul(p+1, &p, 16) );
if(*p != ':')
return E_FAIL;
size = wcstoul(p+1, &p, 16);
if(*p != 0)
return E_FAIL;
server_proc = OpenProcess(PROCESS_DUP_HANDLE, FALSE, proc_id);
if(!server_proc)
return E_FAIL;
if(!DuplicateHandle(server_proc, server_mapping, GetCurrentProcess(), &mapping,
0, FALSE, DUPLICATE_CLOSE_SOURCE|DUPLICATE_SAME_ACCESS))
return E_FAIL;
CloseHandle(server_proc);
GlobalDeleteAtom(result);
view = MapViewOfFile(mapping, FILE_MAP_READ, 0, 0, 0);
CloseHandle(mapping);
if(!view)
return E_FAIL;
data = GlobalAlloc(GMEM_FIXED, size);
if(!data) {
UnmapViewOfFile(view);
return E_OUTOFMEMORY;
}
memcpy(data, view, size);
UnmapViewOfFile(view);
hr = CreateStreamOnHGlobal(data, TRUE, &stream);
if(FAILED(hr)) {
GlobalFree(data);
return hr;
}
hr = CoUnmarshalInterface(stream, riid, ppObject);
IStream_Release(stream);
return hr;
}
LRESULT WINAPI LresultFromObject( REFIID riid, WPARAM wParam, LPUNKNOWN pAcc )
{
static const LARGE_INTEGER seek_zero = {{0}};
WCHAR atom_str[ARRAY_SIZE(lresult_atom_prefix)+3*8+3];
IStream *stream;
HANDLE mapping;
STATSTG stat;
HRESULT hr;
ATOM atom;
void *view;
TRACE("%s %Id %p\n", debugstr_guid(riid), wParam, pAcc);
if(wParam)
FIXME("unsupported wParam = %Ix\n", wParam);
if(!pAcc)
return E_INVALIDARG;
hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
if(FAILED(hr))
return hr;
hr = CoMarshalInterface(stream, riid, pAcc, MSHCTX_LOCAL, NULL, MSHLFLAGS_NORMAL);
if(FAILED(hr)) {
IStream_Release(stream);
return hr;
}
hr = IStream_Seek(stream, seek_zero, STREAM_SEEK_SET, NULL);
if(FAILED(hr)) {
IStream_Release(stream);
return hr;
}
hr = IStream_Stat(stream, &stat, STATFLAG_NONAME);
if(FAILED(hr)) {
CoReleaseMarshalData(stream);
IStream_Release(stream);
return hr;
}else if(stat.cbSize.u.HighPart) {
FIXME("stream size to big\n");
CoReleaseMarshalData(stream);
IStream_Release(stream);
return E_NOTIMPL;
}
mapping = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
stat.cbSize.u.HighPart, stat.cbSize.u.LowPart, NULL);
if(!mapping) {
CoReleaseMarshalData(stream);
IStream_Release(stream);
return hr;
}
view = MapViewOfFile(mapping, FILE_MAP_WRITE, 0, 0, 0);
if(!view) {
CloseHandle(mapping);
CoReleaseMarshalData(stream);
IStream_Release(stream);
return E_FAIL;
}
hr = IStream_Read(stream, view, stat.cbSize.u.LowPart, NULL);
UnmapViewOfFile(view);
if(FAILED(hr)) {
CloseHandle(mapping);
hr = IStream_Seek(stream, seek_zero, STREAM_SEEK_SET, NULL);
if(SUCCEEDED(hr))
CoReleaseMarshalData(stream);
IStream_Release(stream);
return hr;
}
memcpy(atom_str, lresult_atom_prefix, sizeof(lresult_atom_prefix));
swprintf(atom_str+ARRAY_SIZE(lresult_atom_prefix), 3*8 + 3, L"%08x:%08x:%08x", GetCurrentProcessId(),
HandleToUlong(mapping), stat.cbSize.u.LowPart);
atom = GlobalAddAtomW(atom_str);
if(!atom) {
CloseHandle(mapping);
hr = IStream_Seek(stream, seek_zero, STREAM_SEEK_SET, NULL);
if(SUCCEEDED(hr))
CoReleaseMarshalData(stream);
IStream_Release(stream);
return E_FAIL;
}
IStream_Release(stream);
return atom;
}
static void variant_init_i4( VARIANT *v, int val )
{
V_VT(v) = VT_I4;
V_I4(v) = val;
}
HRESULT WINAPI AccessibleObjectFromPoint( POINT point, IAccessible** acc, VARIANT* child_id )
{
IAccessible *cur;
HRESULT hr;
VARIANT v;
HWND hwnd;
TRACE("{%ld,%ld} %p %p\n", point.x, point.y, acc, child_id);
if (!acc || !child_id)
return E_INVALIDARG;
*acc = NULL;
V_VT(child_id) = VT_EMPTY;
hwnd = WindowFromPoint(point);
if (!hwnd)
return E_FAIL;
hwnd = GetAncestor(hwnd, GA_ROOT);
hr = AccessibleObjectFromWindow(hwnd, OBJID_WINDOW, &IID_IAccessible, (void **)&cur);
if (FAILED(hr))
return hr;
if (!cur)
return E_FAIL;
V_VT(&v) = VT_EMPTY;
while (1)
{
hr = IAccessible_accHitTest(cur, point.x, point.y, &v);
if (FAILED(hr))
{
IAccessible_Release(cur);
return hr;
}
if (V_VT(&v) == VT_I4)
{
*acc = cur;
variant_init_i4(child_id, V_I4(&v));
return S_OK;
}
else if (V_VT(&v) == VT_DISPATCH)
{
IAccessible_Release(cur);
hr = IDispatch_QueryInterface(V_DISPATCH(&v), &IID_IAccessible, (void**)&cur);
VariantClear(&v);
if (FAILED(hr))
return hr;
if (!cur)
return E_FAIL;
}
else
{
VariantClear(&v);
IAccessible_Release(cur);
FIXME("unhandled variant type: %d\n", V_VT(&v));
return E_NOTIMPL;
}
}
return S_OK;
}
HRESULT WINAPI AccessibleObjectFromEvent( HWND hwnd, DWORD object_id, DWORD child_id,
IAccessible **acc_out, VARIANT *child_id_out )
{
VARIANT child_id_variant;
IAccessible *acc = NULL;
IDispatch *child = NULL;
HRESULT hr;
TRACE("%p %ld %ld %p %p\n", hwnd, object_id, child_id, acc_out, child_id_out);
if (!acc_out)
return E_INVALIDARG;
*acc_out = NULL;
VariantInit(child_id_out);
hr = AccessibleObjectFromWindow(hwnd, object_id, &IID_IAccessible, (void **)&acc);
if (FAILED(hr))
return hr;
variant_init_i4(&child_id_variant, child_id);
hr = IAccessible_get_accChild(acc, child_id_variant, &child);
if (FAILED(hr))
TRACE("get_accChild failed with %#lx!\n", hr);
if (SUCCEEDED(hr) && child)
{
IAccessible_Release(acc);
hr = IDispatch_QueryInterface(child, &IID_IAccessible, (void **)&acc);
IDispatch_Release(child);
if (FAILED(hr))
return hr;
variant_init_i4(&child_id_variant, CHILDID_SELF);
}
*acc_out = acc;
*child_id_out = child_id_variant;
return S_OK;
}
HRESULT WINAPI AccessibleObjectFromWindow( HWND hwnd, DWORD dwObjectID,
REFIID riid, void** ppvObject )
{
TRACE("%p %ld %s %p\n", hwnd, dwObjectID,
debugstr_guid( riid ), ppvObject );
if(!ppvObject)
return E_INVALIDARG;
*ppvObject = NULL;
if(IsWindow(hwnd)) {
LRESULT lres;
lres = SendMessageW(hwnd, WM_GETOBJECT, 0xffffffff, dwObjectID);
if(FAILED(lres))
return lres;
else if(lres)
return ObjectFromLresult(lres, riid, 0, ppvObject);
}
return CreateStdAccessibleObject(hwnd, dwObjectID, riid, ppvObject);
}
HRESULT WINAPI WindowFromAccessibleObject(IAccessible *acc, HWND *phwnd)
{
IDispatch *parent;
IOleWindow *ow;
HRESULT hres;
TRACE("%p %p\n", acc, phwnd);
IAccessible_AddRef(acc);
while(1) {
hres = IAccessible_QueryInterface(acc, &IID_IOleWindow, (void**)&ow);
if(SUCCEEDED(hres)) {
hres = IOleWindow_GetWindow(ow, phwnd);
IOleWindow_Release(ow);
IAccessible_Release(acc);
return hres;
}
hres = IAccessible_get_accParent(acc, &parent);
IAccessible_Release(acc);
if(FAILED(hres))
return hres;
if(hres!=S_OK || !parent) {
*phwnd = NULL;
return hres;
}
hres = IDispatch_QueryInterface(parent, &IID_IAccessible, (void**)&acc);
IDispatch_Release(parent);
if(FAILED(hres))
return hres;
}
}
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
LPVOID lpvReserved)
{
TRACE("%p, %ld, %p\n", hinstDLL, fdwReason, lpvReserved);
switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
oleacc_handle = hinstDLL;
DisableThreadLibraryCalls(hinstDLL);
break;
}
return OLEACC_DllMain(hinstDLL, fdwReason, lpvReserved);
}
HRESULT WINAPI DllRegisterServer(void)
{
return OLEACC_DllRegisterServer();
}
HRESULT WINAPI DllUnregisterServer(void)
{
return OLEACC_DllUnregisterServer();
}
HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, void **ppv)
{
if(IsEqualGUID(&CLSID_CAccPropServices, rclsid)) {
TRACE("(CLSID_CAccPropServices %s %p)\n", debugstr_guid(iid), ppv);
return get_accpropservices_factory(iid, ppv);
}
if(IsEqualGUID(&CLSID_PSFactoryBuffer, rclsid)) {
TRACE("(CLSID_PSFactoryBuffer %s %p)\n", debugstr_guid(iid), ppv);
return OLEACC_DllGetClassObject(rclsid, iid, ppv);
}
FIXME("%s %s %p: stub\n", debugstr_guid(rclsid), debugstr_guid(iid), ppv);
return E_NOTIMPL;
}
void WINAPI GetOleaccVersionInfo(DWORD* pVersion, DWORD* pBuild)
{
*pVersion = MAKELONG(0,7); /* Windows 7 version of oleacc: 7.0.0.0 */
*pBuild = MAKELONG(0,0);
}
HANDLE WINAPI GetProcessHandleFromHwnd(HWND hwnd)
{
DWORD proc_id;
TRACE("%p\n", hwnd);
if(!GetWindowThreadProcessId(hwnd, &proc_id))
return NULL;
return OpenProcess(PROCESS_DUP_HANDLE | PROCESS_VM_OPERATION |
PROCESS_VM_READ | PROCESS_VM_WRITE | SYNCHRONIZE, TRUE, proc_id);
}
UINT WINAPI GetRoleTextW(DWORD role, LPWSTR lpRole, UINT rolemax)
{
INT ret;
WCHAR *resptr;
TRACE("%lu %p %u\n", role, lpRole, rolemax);
/* return role text length */
if(!lpRole)
return LoadStringW(oleacc_handle, role, (LPWSTR)&resptr, 0);
ret = LoadStringW(oleacc_handle, role, lpRole, rolemax);
if(!(ret > 0)){
if(rolemax > 0) lpRole[0] = '\0';
return 0;
}
return ret;
}
UINT WINAPI GetRoleTextA(DWORD role, LPSTR lpRole, UINT rolemax)
{
UINT length;
WCHAR *roletextW;
TRACE("%lu %p %u\n", role, lpRole, rolemax);
if(lpRole && !rolemax)
return 0;
length = GetRoleTextW(role, NULL, 0);
if(!length) {
if(lpRole && rolemax)
lpRole[0] = 0;
return 0;
}
roletextW = HeapAlloc(GetProcessHeap(), 0, (length + 1)*sizeof(WCHAR));
if(!roletextW)
return 0;
GetRoleTextW(role, roletextW, length + 1);
length = WideCharToMultiByte( CP_ACP, 0, roletextW, -1, NULL, 0, NULL, NULL );
if(!lpRole){
HeapFree(GetProcessHeap(), 0, roletextW);
return length - 1;
}
if(rolemax < length) {
HeapFree(GetProcessHeap(), 0, roletextW);
lpRole[0] = 0;
return 0;
}
WideCharToMultiByte( CP_ACP, 0, roletextW, -1, lpRole, rolemax, NULL, NULL );
if(rolemax < length){
lpRole[rolemax-1] = '\0';
length = rolemax;
}
HeapFree(GetProcessHeap(), 0, roletextW);
return length - 1;
}
UINT WINAPI GetStateTextW(DWORD state_bit, WCHAR *state_str, UINT state_str_len)
{
DWORD state_id;
TRACE("%lx %p %u\n", state_bit, state_str, state_str_len);
if(state_bit & ~(STATE_SYSTEM_VALID | STATE_SYSTEM_HASPOPUP)) {
if(state_str && state_str_len)
state_str[0] = 0;
return 0;
}
state_id = IDS_STATE_NORMAL;
while(state_bit) {
state_id++;
state_bit /= 2;
}
if(state_str) {
UINT ret = LoadStringW(oleacc_handle, state_id, state_str, state_str_len);
if(!ret && state_str_len)
state_str[0] = 0;
return ret;
}else {
WCHAR *tmp;
return LoadStringW(oleacc_handle, state_id, (WCHAR*)&tmp, 0);
}
}
UINT WINAPI GetStateTextA(DWORD state_bit, CHAR *state_str, UINT state_str_len)
{
DWORD state_id;
TRACE("%lx %p %u\n", state_bit, state_str, state_str_len);
if(state_str && !state_str_len)
return 0;
if(state_bit & ~(STATE_SYSTEM_VALID | STATE_SYSTEM_HASPOPUP)) {
if(state_str && state_str_len)
state_str[0] = 0;
return 0;
}
state_id = IDS_STATE_NORMAL;
while(state_bit) {
state_id++;
state_bit /= 2;
}
if(state_str) {
UINT ret = LoadStringA(oleacc_handle, state_id, state_str, state_str_len);
if(!ret && state_str_len)
state_str[0] = 0;
return ret;
}else {
CHAR tmp[256];
return LoadStringA(oleacc_handle, state_id, tmp, sizeof(tmp));
}
}
HRESULT WINAPI AccessibleChildren(IAccessible *container,
LONG start, LONG count, VARIANT *children, LONG *children_cnt)
{
IEnumVARIANT *ev;
LONG i, child_no;
HRESULT hr;
TRACE("%p %ld %ld %p %p\n", container, start, count, children, children_cnt);
if(!container || !children || !children_cnt)
return E_INVALIDARG;
for(i=0; i<count; i++)
VariantInit(children+i);
hr = IAccessible_QueryInterface(container, &IID_IEnumVARIANT, (void**)&ev);
if(SUCCEEDED(hr)) {
hr = IEnumVARIANT_Reset(ev);
if(SUCCEEDED(hr))
hr = IEnumVARIANT_Skip(ev, start);
if(SUCCEEDED(hr))
hr = IEnumVARIANT_Next(ev, count, children, (ULONG*)children_cnt);
IEnumVARIANT_Release(ev);
return hr;
}
hr = IAccessible_get_accChildCount(container, &child_no);
if(FAILED(hr))
return hr;
for(i=0; i<count && start+i+1<=child_no; i++) {
IDispatch *disp;
V_VT(children+i) = VT_I4;
V_I4(children+i) = start+i+1;
hr = IAccessible_get_accChild(container, children[i], &disp);
if(SUCCEEDED(hr) && disp) {
V_VT(children+i) = VT_DISPATCH;
V_DISPATCH(children+i) = disp;
}
}
*children_cnt = i;
return i==count ? S_OK : S_FALSE;
}
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