//-----------------------------------------------------
void
nsNativeDragTarget::ProcessDrag(LPDATAOBJECT pData,
PRUint32 aEventType,
DWORD grfKeyState,
POINTL ptl,
DWORD* pdwEffect)
{
// Before dispatching the event make sure we have the correct drop action set
PRUint32 geckoAction;
GetGeckoDragAction(pData, grfKeyState, pdwEffect, &geckoAction);
// Set the current action into the Gecko specific type
nsCOMPtr<nsIDragSession> currSession;
mDragService->GetCurrentSession(getter_AddRefs(currSession));
if (!currSession) {
return;
}
currSession->SetDragAction(geckoAction);
// Dispatch the event into Gecko
DispatchDragDropEvent(aEventType, ptl);
// Now get the cached Drag effect from the drag service
// the data memeber should have been set by who ever handled the
// nsGUIEvent or nsIDOMEvent
PRBool canDrop;
currSession->GetCanDrop(&canDrop);
if (!canDrop)
*pdwEffect = DROPEFFECT_NONE;
// Clear the cached value
currSession->SetCanDrop(PR_FALSE);
}
//-----------------------------------------------------
STDMETHODIMP
nsNativeDragTarget::DragLeave()
{
if (DRAG_DEBUG) printf("DragLeave\n");
if (!mDragService) {
return ResultFromScode(E_FAIL);
}
// Drag and drop image helper
if (mDropTargetHelper) {
mDropTargetHelper->DragLeave();
}
// dispatch the event into Gecko
DispatchDragDropEvent(NS_DRAGDROP_EXIT, gDragLastPoint);
nsCOMPtr<nsIDragSession> currentDragSession;
mDragService->GetCurrentSession(getter_AddRefs(currentDragSession));
if (currentDragSession) {
nsCOMPtr<nsIDOMNode> sourceNode;
currentDragSession->GetSourceNode(getter_AddRefs(sourceNode));
if (!sourceNode) {
// We're leaving a window while doing a drag that was
// initiated in a different app. End the drag session, since
// we're done with it for now (until the user drags back into
// mozilla).
mDragService->EndDragSession(PR_FALSE);
}
}
// release the ref that was taken in DragEnter
NS_ASSERTION(mTookOwnRef, "want to release own ref, but not taken!");
if (mTookOwnRef) {
this->Release();
mTookOwnRef = PR_FALSE;
}
return S_OK;
}
void nsWidget::ProcessDrag( PhEvent_t *event, PRUint32 aEventType, PhPoint_t *pos ) {
nsCOMPtr<nsIDragSession> currSession;
sDragService->GetCurrentSession ( getter_AddRefs(currSession) );
if( !currSession ) return;
int action = nsIDragService::DRAGDROP_ACTION_NONE;
nsDragService *d = ( nsDragService * ) sDragService;
if( d->mActionType & nsIDragService::DRAGDROP_ACTION_MOVE )
action = nsIDragService::DRAGDROP_ACTION_MOVE;
else if( d->mActionType & nsIDragService::DRAGDROP_ACTION_LINK )
action = nsIDragService::DRAGDROP_ACTION_LINK;
else if( d->mActionType & nsIDragService::DRAGDROP_ACTION_COPY )
action = nsIDragService::DRAGDROP_ACTION_COPY;
currSession->SetDragAction( action );
DispatchDragDropEvent( event, aEventType, pos );
int old_subtype = event->subtype;
event->subtype = Ph_EV_DND_ENTER;
PRBool canDrop;
currSession->GetCanDrop(&canDrop);
if(!canDrop) {
static PhCharacterCursorDescription_t nodrop_cursor = { { Ph_CURSOR_NOINPUT, sizeof(PhCharacterCursorDescription_t) }, PgRGB( 255, 255, 224 ) };
PhAckDnd( event, Ph_EV_DND_MOTION, ( PhCursorDescription_t * ) &nodrop_cursor );
}
else {
static PhCharacterCursorDescription_t drop_cursor = { { Ph_CURSOR_PASTE, sizeof(PhCharacterCursorDescription_t) }, PgRGB( 255, 255, 224 ) };
PhAckDnd( event, Ph_EV_DND_MOTION, ( PhCursorDescription_t * ) &drop_cursor );
}
event->subtype = old_subtype;
// Clear the cached value
currSession->SetCanDrop(PR_FALSE);
}
