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ole32: Add a helper function to set and release the source IDataObject.

This commit is contained in:
Huw Davies 2009-04-16 12:08:11 +01:00 committed by Alexandre Julliard
parent bf8d85cee0
commit 6ce9922f3d
1 changed files with 119 additions and 125 deletions
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242
dlls/ole32/clipboard.c
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@ -753,68 +753,6 @@ static HRESULT render_format(IDataObject *data, LPFORMATETC fmt)
return hr;
}
/***********************************************************************
* clipbrd_wndproc
*/
static LRESULT CALLBACK clipbrd_wndproc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
{
ole_clipbrd *clipbrd;
get_ole_clipbrd(&clipbrd);
switch (message)
{
case WM_RENDERFORMAT:
{
UINT cf = wparam;
ole_priv_data_entry *entry;
TRACE("(): WM_RENDERFORMAT(cfFormat=%x)\n", cf);
entry = find_format_in_list(clipbrd->cached_enum->entries, clipbrd->cached_enum->count, cf);
if(entry)
render_format(clipbrd->pIDataObjectSrc, &entry->fmtetc);
break;
}
case WM_RENDERALLFORMATS:
{
DWORD i;
ole_priv_data_entry *entries = clipbrd->cached_enum->entries;
TRACE("(): WM_RENDERALLFORMATS\n");
for(i = 0; i < clipbrd->cached_enum->count; i++)
{
if(entries[i].first_use)
render_format(clipbrd->pIDataObjectSrc, &entries[i].fmtetc);
}
break;
}
case WM_DESTROYCLIPBOARD:
{
TRACE("(): WM_DESTROYCLIPBOARD\n");
if ( clipbrd->pIDataObjectSrc )
{
IDataObject_Release(clipbrd->pIDataObjectSrc);
clipbrd->pIDataObjectSrc = NULL;
HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
clipbrd->cached_enum = NULL;
}
break;
}
default:
return DefWindowProcW(hwnd, message, wparam, lparam);
}
return 0;
}
/*---------------------------------------------------------------------*
* Implementation of the internal IDataObject interface exposed by
* the OLE clipboard.
@ -1249,37 +1187,6 @@ void OLEClipbrd_UnInitialize(void)
}
}
/***********************************************************************
* OLEClipbrd_CreateWindow()
* Create the clipboard window
*/
static HWND OLEClipbrd_CreateWindow(void)
{
WNDCLASSEXW class;
static const WCHAR ole32W[] = {'o','l','e','3','2',0};
static const WCHAR title[] = {'C','l','i','p','b','o','a','r','d','W','i','n','d','o','w',0};
HINSTANCE hinst = GetModuleHandleW(ole32W);
class.cbSize = sizeof(class);
class.style = 0;
class.lpfnWndProc = clipbrd_wndproc;
class.cbClsExtra = 0;
class.cbWndExtra = 0;
class.hInstance = hinst;
class.hIcon = 0;
class.hCursor = 0;
class.hbrBackground = 0;
class.lpszMenuName = NULL;
class.lpszClassName = clipbrd_wndclass;
class.hIconSm = NULL;
RegisterClassExW(&class);
return CreateWindowW(clipbrd_wndclass, title, WS_POPUP | WS_CLIPSIBLINGS | WS_OVERLAPPED,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hinst, 0);
}
/*********************************************************************
* set_clipboard_formats
*
@ -1372,6 +1279,119 @@ static HRESULT set_clipboard_formats(ole_clipbrd *clipbrd, IDataObject *data)
return S_OK;
}
/***********************************************************************
* set_src_dataobject
*
* Clears and sets the clipboard's src IDataObject.
*/
static HRESULT set_src_dataobject(ole_clipbrd *clipbrd, IDataObject *data)
{
HRESULT hr = S_OK;
if(clipbrd->pIDataObjectSrc)
{
IDataObject_Release(clipbrd->pIDataObjectSrc);
clipbrd->pIDataObjectSrc = NULL;
HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
clipbrd->cached_enum = NULL;
}
if(data)
{
IDataObject_AddRef(data);
clipbrd->pIDataObjectSrc = data;
hr = set_clipboard_formats(clipbrd, data);
}
return hr;
}
/***********************************************************************
* clipbrd_wndproc
*/
static LRESULT CALLBACK clipbrd_wndproc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
{
ole_clipbrd *clipbrd;
get_ole_clipbrd(&clipbrd);
switch (message)
{
case WM_RENDERFORMAT:
{
UINT cf = wparam;
ole_priv_data_entry *entry;
TRACE("(): WM_RENDERFORMAT(cfFormat=%x)\n", cf);
entry = find_format_in_list(clipbrd->cached_enum->entries, clipbrd->cached_enum->count, cf);
if(entry)
render_format(clipbrd->pIDataObjectSrc, &entry->fmtetc);
break;
}
case WM_RENDERALLFORMATS:
{
DWORD i;
ole_priv_data_entry *entries = clipbrd->cached_enum->entries;
TRACE("(): WM_RENDERALLFORMATS\n");
for(i = 0; i < clipbrd->cached_enum->count; i++)
{
if(entries[i].first_use)
render_format(clipbrd->pIDataObjectSrc, &entries[i].fmtetc);
}
break;
}
case WM_DESTROYCLIPBOARD:
{
TRACE("(): WM_DESTROYCLIPBOARD\n");
set_src_dataobject(clipbrd, NULL);
break;
}
default:
return DefWindowProcW(hwnd, message, wparam, lparam);
}
return 0;
}
/***********************************************************************
* OLEClipbrd_CreateWindow()
* Create the clipboard window
*/
static HWND OLEClipbrd_CreateWindow(void)
{
WNDCLASSEXW class;
static const WCHAR ole32W[] = {'o','l','e','3','2',0};
static const WCHAR title[] = {'C','l','i','p','b','o','a','r','d','W','i','n','d','o','w',0};
HINSTANCE hinst = GetModuleHandleW(ole32W);
class.cbSize = sizeof(class);
class.style = 0;
class.lpfnWndProc = clipbrd_wndproc;
class.cbClsExtra = 0;
class.cbWndExtra = 0;
class.hInstance = hinst;
class.hIcon = 0;
class.hCursor = 0;
class.hbrBackground = 0;
class.lpszMenuName = NULL;
class.lpszClassName = clipbrd_wndclass;
class.hIconSm = NULL;
RegisterClassExW(&class);
return CreateWindowW(clipbrd_wndclass, title, WS_POPUP | WS_CLIPSIBLINGS | WS_OVERLAPPED,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hinst, 0);
}
/*********************************************************************
* set_dataobject_format
*
@ -1416,12 +1436,12 @@ static HRESULT set_dataobject_format(HWND hwnd)
* CLIPBRD_E_CANT_SET SetClipboard failed
*/
HRESULT WINAPI OleSetClipboard(IDataObject* pDataObj)
HRESULT WINAPI OleSetClipboard(IDataObject* data)
{
HRESULT hr;
ole_clipbrd *clipbrd;
TRACE("(%p)\n", pDataObj);
TRACE("(%p)\n", data);
if(FAILED(hr = get_ole_clipbrd(&clipbrd))) return hr;
@ -1444,25 +1464,8 @@ HRESULT WINAPI OleSetClipboard(IDataObject* pDataObj)
goto end;
}
/*
* If we are already holding on to an IDataObject first release that.
*/
if ( clipbrd->pIDataObjectSrc )
{
IDataObject_Release(clipbrd->pIDataObjectSrc);
clipbrd->pIDataObjectSrc = NULL;
HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
clipbrd->cached_enum = NULL;
}
/* A NULL value indicates that the clipboard should be emptied. */
clipbrd->pIDataObjectSrc = pDataObj;
if ( pDataObj )
{
IDataObject_AddRef(clipbrd->pIDataObjectSrc);
hr = set_clipboard_formats(clipbrd, pDataObj);
hr = set_src_dataobject(clipbrd, data);
if(FAILED(hr)) goto end;
}
hr = set_dataobject_format(clipbrd->hWndClipboard);
@ -1472,13 +1475,7 @@ end:
if ( FAILED(hr) )
{
if (clipbrd->pIDataObjectSrc)
{
IDataObject_Release(clipbrd->pIDataObjectSrc);
clipbrd->pIDataObjectSrc = NULL;
HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
clipbrd->cached_enum = NULL;
}
set_src_dataobject(clipbrd, NULL);
}
return hr;
@ -1561,10 +1558,7 @@ HRESULT WINAPI OleFlushClipboard(void)
hr = set_dataobject_format(NULL);
IDataObject_Release(clipbrd->pIDataObjectSrc);
clipbrd->pIDataObjectSrc = NULL;
HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
clipbrd->cached_enum = NULL;
set_src_dataobject(clipbrd, NULL);
end: