/// <summary>
/// Handle interaction between to and from POS for a derivational affix MSA.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
/// <remarks>
/// If the new value is zero, then set the other one's value to zero, as well.
/// If the other one's value is zero, then set it to the new value.
/// In all cases, set this one's value to the new value.
/// </remarks>
protected void OnReferenceChanged(object sender, SIL.FieldWorks.Common.Utils.FwObjectSelectionEventArgs e)
{
Debug.Assert(sender is AtomicReferenceLauncher);
AtomicReferenceLauncher source = (AtomicReferenceLauncher)sender;
Debug.Assert(Control == source);
Debug.Assert(Object is MoDerivAffMsa);
AtomicReferenceLauncher otherControl = null;
int idxSender = Parent.Controls.IndexOf(this);
int otherFlid;
bool myIsFromPOS = true;
if (m_flid == (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidFromPartOfSpeech)
{
otherFlid = (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidToPartOfSpeech;
}
else
{
otherFlid = (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidFromPartOfSpeech;
myIsFromPOS = false;
}
int otherHvo = 0;
Slice otherSlice = null;
int idxOther;
if (idxSender > 0)
{
idxOther = idxSender - 1;
while (otherSlice == null || (otherSlice.Indent == Indent && idxOther > 0 && otherSlice.Object == Object))
{
otherSlice = (Slice)Parent.Controls[idxOther--];
if (otherSlice is AtomicReferenceSlice && (otherSlice as AtomicReferenceSlice).Flid == otherFlid)
{
break;
}
}
if (otherSlice != null && otherSlice is AtomicReferenceSlice)
{
otherHvo = GetOtherHvo(otherSlice as AtomicReferenceSlice, otherFlid, myIsFromPOS, out otherControl);
}
else
{
otherSlice = null;
}
}
if (otherControl == null && idxSender < Parent.Controls.Count)
{
idxOther = idxSender + 1;
while (otherSlice == null ||
(otherSlice.Indent == Indent && idxOther > 0 && otherSlice.Object == Object))
{
otherSlice = (Slice)Parent.Controls[idxOther++];
if (otherSlice is AtomicReferenceSlice && (otherSlice as AtomicReferenceSlice).Flid == otherFlid)
{
break;
}
}
if (otherSlice != null && otherSlice is AtomicReferenceSlice)
{
otherHvo = GetOtherHvo(otherSlice as AtomicReferenceSlice, otherFlid, myIsFromPOS, out otherControl);
}
else
{
otherSlice = null;
}
}
MoDerivAffMsa msa = Object as MoDerivAffMsa;
if (e.Hvo == 0 && otherHvo != 0)
{
if (otherControl == null)
{
otherControl.AddItem(0); // Clear the other one, as well.
}
else
{
if (m_flid == (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidFromPartOfSpeech)
{
msa.ToPartOfSpeechRAHvo = 0;
}
else
{
msa.FromPartOfSpeechRAHvo = 0;
}
}
}
else if (otherHvo == 0 && e.Hvo > 0)
{
if (otherControl == null)
{
// The other one is not available (filtered out?),
// so set it directly using the msa.
if (m_flid == (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidFromPartOfSpeech)
{
msa.ToPartOfSpeechRAHvo = e.Hvo;
}
else
{
msa.FromPartOfSpeechRAHvo = e.Hvo;
}
}
else
{
otherControl.AddItem(e.Hvo); // Set the other guy to this value.
}
}
}
private void m_pOSPopupTreeManager_AfterSelect(object sender, TreeViewEventArgs e)
{
// unless we get a mouse click or simulated mouse click (e.g. by ENTER or TAB),
// do not treat as an actual selection.
if (m_handlingMessage || e.Action != TreeViewAction.ByMouse)
{
return;
}
int hvoPos = (e.Node as HvoTreeNode).Hvo;
// if hvoPos is negative, then allow POSPopupTreeManager AfterSelect to handle it.
if (hvoPos < 0)
{
return;
}
try
{
m_handlingMessage = true;
m_cache.BeginUndoTask(DetailControlsStrings.ksUndoSetCat,
DetailControlsStrings.ksRedoSetCat);
m_cache.SetObjProperty(m_obj.Hvo, m_flid, hvoPos);
// Do some side effects for a couple of MSA classes.
if (m_obj is MoInflAffMsa)
{
MoInflAffMsa msa = m_obj as MoInflAffMsa;
int[] hvos = msa.SlotsRC.HvoArray;
if (hvoPos == 0)
{
msa.ClearAllSlots();
}
else if (msa.SlotsRC.Count > 0)
{
bool fPosHasSlot = false;
for (int hvo = 0; hvo < msa.SlotsRC.Count; hvo++)
{
if (msa.PartOfSpeechRA.AllAffixSlotIDs.Contains(hvo))
{
fPosHasSlot = true;
break;
}
}
if (!fPosHasSlot)
{
msa.ClearAllSlots();
}
}
}
else if (m_obj is MoDerivAffMsa)
{
MoDerivAffMsa msa = m_obj as MoDerivAffMsa;
if (hvoPos > 0 &&
m_flid == (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidFromPartOfSpeech &&
msa.ToPartOfSpeechRAHvo == 0)
{
msa.ToPartOfSpeechRAHvo = hvoPos;
}
else if (hvoPos > 0 &&
m_flid == (int)MoDerivAffMsa.MoDerivAffMsaTags.kflidToPartOfSpeech &&
msa.FromPartOfSpeechRAHvo == 0)
{
msa.FromPartOfSpeechRAHvo = hvoPos;
}
}
m_cache.EndUndoTask();
}
finally
{
m_handlingMessage = false;
}
}
