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Register the shell view itself as the drop target, not it's parent folder. 

Forward drag&drop method calls to the folder currently under the cursor.
This commit is contained in:
Michael Jung 2005-11-28 11:00:33 +01:00 committed by Alexandre Julliard
parent 8c8c81a1ef
commit a83d55e929
1 changed files with 98 additions and 34 deletions
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132
dlls/shell32/shlview.c
View File

@ -100,6 +100,9 @@ typedef struct
DWORD dwAspects;
DWORD dwAdvf;
IAdviseSink *pAdvSink;
IDropTarget* pCurDropTarget; /* The sub-item, which is currently dragged over */
IDataObject* pCurDataObject; /* The dragged data-object */
LONG iDragOverItem; /* Dragged over item's index, iff pCurDropTarget != NULL */
} IShellViewImpl;
static const IShellViewVtbl svvt;
@ -190,6 +193,10 @@ IShellView * IShellView_Constructor( IShellFolder * pFolder)
if(pFolder) IShellFolder_AddRef(pFolder);
IShellFolder_QueryInterface(sv->pSFParent, &IID_IShellFolder2, (LPVOID*)&sv->pSF2Parent);
sv->pCurDropTarget = NULL;
sv->pCurDataObject = NULL;
sv->iDragOverItem = 0;
TRACE("(%p)->(%p)\n",sv, pFolder);
return (IShellView *) sv;
}
@ -671,7 +678,7 @@ static LRESULT ShellView_OnCreate(IShellViewImpl * This)
}
}
if (SUCCEEDED(IShellFolder_CreateViewObject(This->pSFParent, This->hWnd, &IID_IDropTarget, (LPVOID*)&pdt)))
if (SUCCEEDED(IUnknown_QueryInterface((IUnknown*)&This->lpVtbl, &IID_IDropTarget, (LPVOID*)&pdt)))
{
RegisterDragDrop(This->hWnd, pdt);
IDropTarget_Release(pdt);
@ -2169,56 +2176,113 @@ static ULONG WINAPI ISVDropTarget_Release( IDropTarget *iface)
return IShellFolder_Release((IShellFolder*)This);
}
static HRESULT WINAPI ISVDropTarget_DragEnter(
IDropTarget *iface,
IDataObject *pDataObject,
DWORD grfKeyState,
POINTL pt,
DWORD *pdwEffect)
/******************************************************************************
* drag_notify_subitem [Internal]
*
* Figure out the shellfolder object, which is currently under the mouse cursor
* and notify it via the IDropTarget interface.
*/
static HRESULT drag_notify_subitem(IShellViewImpl *This, DWORD grfKeyState, POINTL pt,
DWORD *pdwEffect)
{
LVHITTESTINFO htinfo;
LVITEMA lvItem;
LONG lResult;
HRESULT hr;
IShellViewImpl *This = impl_from_IDropTarget(iface);
/* Map from global to client coordinates and query the index of the listview-item, which is
* currently under the mouse cursor. */
htinfo.pt.x = pt.x;
htinfo.pt.y = pt.y;
htinfo.flags = LVHT_ONITEM;
MapWindowPoints(NULL, This->hWndList, &htinfo.pt, 1);
lResult = SendMessageW(This->hWndList, LVM_HITTEST, 0, (LPARAM)&htinfo);
FIXME("Stub: This=%p, DataObject=%p\n",This,pDataObject);
/* If we are still over the previous sub-item, notify it via DragOver and return. */
if (This->pCurDropTarget && lResult == This->iDragOverItem)
return IDropTarget_DragOver(This->pCurDropTarget, grfKeyState, pt, pdwEffect);
/* We've left the previous sub-item, notify it via DragLeave and Release it. */
if (This->pCurDropTarget) {
IDropTarget_DragLeave(This->pCurDropTarget);
IDropTarget_Release(This->pCurDropTarget);
This->pCurDropTarget = NULL;
}
return E_NOTIMPL;
This->iDragOverItem = lResult;
if (lResult == -1) {
/* We are not above one of the listview's subitems. Bind to the parent folder's
* DropTarget interface. */
hr = IShellFolder_QueryInterface(This->pSFParent, &IID_IDropTarget,
(LPVOID*)&This->pCurDropTarget);
} else {
/* Query the relative PIDL of the shellfolder object represented by the currently
* dragged over listview-item ... */
ZeroMemory(&lvItem, sizeof(lvItem));
lvItem.mask = LVIF_PARAM;
lvItem.iItem = lResult;
ListView_GetItemA(This->hWndList, &lvItem);
/* ... and bind pCurDropTarget to this folder's IDropTarget interface */
hr = IShellFolder_BindToObject(This->pSFParent, (LPITEMIDLIST)lvItem.lParam, NULL,
&IID_IDropTarget, (LPVOID*)&This->pCurDropTarget);
}
/* If anything failed, pCurDropTarget should be NULL now, which ought to be a save state. */
if (FAILED(hr))
return hr;
/* Notify the item just entered via DragEnter. */
return IDropTarget_DragEnter(This->pCurDropTarget, This->pCurDataObject, grfKeyState, pt, pdwEffect);
}
static HRESULT WINAPI ISVDropTarget_DragOver(
IDropTarget *iface,
DWORD grfKeyState,
POINTL pt,
DWORD *pdwEffect)
static HRESULT WINAPI ISVDropTarget_DragEnter(IDropTarget *iface, IDataObject *pDataObject,
DWORD grfKeyState, POINTL pt, DWORD *pdwEffect)
{
IShellViewImpl *This = impl_from_IDropTarget(iface);
IShellViewImpl *This = impl_from_IDropTarget(iface);
FIXME("Stub: This=%p\n",This);
/* Get a hold on the data object for later calls to DragEnter on the sub-folders */
This->pCurDataObject = pDataObject;
IDataObject_AddRef(pDataObject);
return E_NOTIMPL;
return drag_notify_subitem(This, grfKeyState, pt, pdwEffect);
}
static HRESULT WINAPI ISVDropTarget_DragLeave(
IDropTarget *iface)
static HRESULT WINAPI ISVDropTarget_DragOver(IDropTarget *iface, DWORD grfKeyState, POINTL pt,
DWORD *pdwEffect)
{
IShellViewImpl *This = impl_from_IDropTarget(iface);
FIXME("Stub: This=%p\n",This);
return E_NOTIMPL;
IShellViewImpl *This = impl_from_IDropTarget(iface);
return drag_notify_subitem(This, grfKeyState, pt, pdwEffect);
}
static HRESULT WINAPI ISVDropTarget_Drop(
IDropTarget *iface,
IDataObject* pDataObject,
DWORD grfKeyState,
POINTL pt,
DWORD *pdwEffect)
static HRESULT WINAPI ISVDropTarget_DragLeave(IDropTarget *iface) {
IShellViewImpl *This = impl_from_IDropTarget(iface);
IDropTarget_DragLeave(This->pCurDropTarget);
IDropTarget_Release(This->pCurDropTarget);
IDataObject_Release(This->pCurDataObject);
This->pCurDataObject = NULL;
This->pCurDropTarget = NULL;
This->iDragOverItem = 0;
return S_OK;
}
static HRESULT WINAPI ISVDropTarget_Drop(IDropTarget *iface, IDataObject* pDataObject,
DWORD grfKeyState, POINTL pt, DWORD *pdwEffect)
{
IShellViewImpl *This = impl_from_IDropTarget(iface);
IShellViewImpl *This = impl_from_IDropTarget(iface);
FIXME("Stub: This=%p\n",This);
IDropTarget_Drop(This->pCurDropTarget, pDataObject, grfKeyState, pt, pdwEffect);
return E_NOTIMPL;
IDropTarget_Release(This->pCurDropTarget);
IDataObject_Release(This->pCurDataObject);
This->pCurDataObject = NULL;
This->pCurDropTarget = NULL;
This->iDragOverItem = 0;
return S_OK;
}
static const IDropTargetVtbl dtvt =