/*********************************************************************
*
* _ClearSelection
*/
static void _ClearSelection(RADIO_Handle hObj, U8 GroupId) {
WM_HWIN hWin;
WM_Obj* pWin;
for (hWin = WM__GetFirstSibling(hObj); hWin; hWin = pWin->hNext) {
pWin = WM_H2P(hWin);
if (hWin != hObj) {
if (_IsInGroup(hWin, GroupId)) {
RADIO__SetValue(hWin, (RADIO_Obj*)pWin, -1);
}
}
}
}
/*********************************************************************
*
* WM__GetPrevSibling
Return value: Handle of previous sibling (if any), otherwise 0
*/
WM_HWIN WM__GetPrevSibling(WM_HWIN hWin) {
WM_HWIN hi;
WM_Obj* pi;
for (hi = WM__GetFirstSibling(hWin); hi; hi = pi->hNext) {
if (hi == hWin) {
hi = 0; /* There is no previous sibling. Return 0 */
break;
}
pi = WM_H2P(hi);
if (pi->hNext == hWin) {
break; /* We found the previous one ! */
}
}
return hi;
}
/*********************************************************************
*
* RADIO_SetGroupId
*/
void RADIO_SetGroupId(RADIO_Handle hObj, U8 NewGroupId) {
if (hObj) {
RADIO_Obj* pObj;
U8 OldGroupId;
WM_LOCK();
pObj = RADIO_H2P(hObj);
OldGroupId = pObj->GroupId;
if (NewGroupId != OldGroupId) {
WM_HWIN hFirst;
hFirst = WM__GetFirstSibling(hObj);
/* Set function pointer if necessary */
if (NewGroupId && (RADIO__pfHandleSetValue == NULL)) {
RADIO__pfHandleSetValue = _HandleSetValue;
}
/* Pass our selection, if we have one, to another radio button in */
/* our old group. So the group have a valid selection when we leave it. */
if (OldGroupId && (pObj->Sel >= 0)) {
WM_HWIN hWin;
pObj->GroupId = 0; /* Leave group first, so _GetNextInGroup() could */
/* not find a handle to our own window. */
hWin = _GetNextInGroup(hFirst, OldGroupId);
if (hWin) {
_SetValue(hWin, 0);
}
}
/* Make sure we have a valid selection according to our new group */
if (_GetNextInGroup(hFirst, NewGroupId) != 0) {
/* Join an existing group with an already valid selection, so clear our own one */
RADIO__SetValue(hObj, pObj, -1);
} else if (pObj->Sel < 0) {
/* We are the first window in group, so we must have a valid selection at our own. */
RADIO__SetValue(hObj, pObj, 0);
}
/* Change the group */
pObj->GroupId = NewGroupId;
}
WM_UNLOCK();
}
}
