public void HandleCreateMenuItem(object sender, EventArgs ea)
{
Slice slice = m_dataEntryForm.CurrentSlice;
if (slice != null)
{
ClassAndPropInfo cpi = (ClassAndPropInfo)m_rgcpiCreateOptions[((MenuItem)sender).Index];
var cache = slice.ContainingDataTree.Cache;
int hvoOwner = cpi.hvoOwner;
int ihvoPosition = cpi.ihvoPosition;
if (ihvoPosition == ClassAndPropInfo.kposNotSet && cpi.fieldType == (int)CellarPropertyType.OwningSequence)
{
// insert at end of sequence.
ihvoPosition = cache.DomainDataByFlid.get_VecSize(hvoOwner, (int)cpi.flid);
} // otherwise we already worked out the position or it doesn't matter
// Note: ihvoPosition ignored if sequence or atomic.
int hvoNew = cache.DomainDataByFlid.MakeNewObject((int)(cpi.signatureClsid), hvoOwner, (int)(cpi.flid), ihvoPosition);
cache.DomainDataByFlid.PropChanged(null, (int)PropChangeType.kpctNotifyAll, hvoOwner, (int)(cpi.flid), ihvoPosition, 1, 0);
m_helper = null; // allow old one to be garbage.
if (hvoOwner == slice.Object.Hvo && slice.Expansion == DataTree.TreeItemState.ktisCollapsed)
{
// We added something to the object of the current slice...almost certainly it
// will be something that will display under this node...if it is still collapsed,
// expand it to show the thing inserted.
slice.TreeNode.ToggleExpansion(slice.IndexInContainer);
}
Slice child = slice.ExpandSubItem(hvoNew);
if (child != null)
{
child.FocusSliceOrChild();
}
}
}
/// <summary>
/// Append to options a sequence of ClassAndPropInfo objects indicating classes of object
/// that can be added as siblings of the object represented by this slice.
/// The ihvoPosition setting in the object will be for inserting before the object
/// of the current slice if fBefore is true, after if it is false.
/// </summary>
/// <param name="options"></param>
/// <param name="fBefore"></param>
public void GetCreateSiblingOptions(Slice slice, List <ClassAndPropInfo> options, bool fBefore)
{
int hvoOwner;
int flid;
int ihvoPosition;
if (!slice.GetSeqContext(out hvoOwner, out flid, out ihvoPosition))
{
return; // empty
}
// If in a sequence, and if we want to insert after this object, increment the position.
// In a collection ihvoPosition is not used.
if (!fBefore)
{
ihvoPosition++;
}
int firstSibling = options.Count;
slice.Cache.AddClassesForField((int)flid, true, options);
// NB: Do NOT change this to a ForEach!! It must NOT operate on all items in the collection,
// ONLY on the sibling options just added.
for (int i = firstSibling; i < options.Count; ++i)
{
ClassAndPropInfo cpi = (ClassAndPropInfo)options[i];
cpi.hvoOwner = hvoOwner;
cpi.ihvoPosition = ihvoPosition;
}
}
/// <summary>
/// Setup DependencyPaths property
/// </summary>
/// <param name="configuration"></param>
/// <param name="cache"></param>
protected void SetupDependencies(XmlNode configuration, FdoCache cache)
{
if (DependencyPaths.Count > 0)
{
return; // already setup.
}
string dependsStr = XmlUtils.GetOptionalAttributeValue(configuration, "depends");
if (dependsStr == null || cache == null)
{
return;
}
string[] depends = dependsStr.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string fieldPath in depends)
{
string[] fieldtree = fieldPath.Split(new char[] { '.' });
List <int> tags = new List <int>(fieldtree.Length);
string srcClassName = this.ClassName;
foreach (string field in fieldtree)
{
int tag = cache.GetFlid(0, srcClassName, field);
Debug.Assert(tag > 0, String.Format("Invalid dependency field {0} in field path {1}.", field, fieldPath));
if (tag <= 0)
{
break;
}
tags.Add(tag);
if (tags.Count < fieldtree.Length)
{
string nextFieldName = fieldtree[tags.Count];
// make dst class the source class of next field
uint clsidDst = 0;
if (field == "OwnerHVO")
{
// handle the special case where we need the owning class
// this is only possible if srcClassName is has a unique owner.
// find the first class that owns the given 'classId' and the given fieldName.
clsidDst = GetClassOwningClassAndFieldName(cache, srcClassName, nextFieldName);
}
else
{
ClassAndPropInfo cpi = cache.GetClassAndPropInfo((uint)tag);
if (ClassHasField(cache, cache.GetClassName(cpi.signatureClsid), nextFieldName))
{
clsidDst = cpi.signatureClsid;
}
else if (cpi.isAbstract)
{
// find a subclasses that could refer to the nextFieldName.
clsidDst = GetSubclassOwningNextField(cache, tag, nextFieldName);
}
}
srcClassName = cache.GetClassName(clsidDst);
}
}
m_fieldPaths.Add(tags);
}
}
private void SetupGhostOwningFlidInfo(FdoCache cache, int ghostListFlid)
{
if (ghostListFlid == 0)
return;
IVwVirtualHandler vh;
cache.TryGetVirtualHandler(ghostListFlid, out vh);
m_vh = vh as FDOGhostSequencePropertyVirtualHandler;
// the ghost owner is on the last level.
m_cpiForOwningFlidForGhost = m_vh.RealOwningPath[m_vh.RealOwningPath.Count - 1];
}
/// <summary>
/// Set up the submenu items for 'Create' and 'Insert' menus.
/// </summary>
protected void SetupContextMenu(Slice slice, SliceTreeNode sliceTreeNode)
{
// Get rid of old sub-menu items.
m_mnuCreate.MenuItems.Clear();
m_helper = new ContextMenuHelper(sliceTreeNode);
m_rgcpiCreateOptions = slice.Object.PropsAndClassesOwnedBy;
// Fill in info about which object will be the new owner.
for (int index = m_rgcpiCreateOptions.Count; --index >= 0;)
{
ClassAndPropInfo cpi = m_rgcpiCreateOptions[index];
cpi.hvoOwner = slice.Object.Hvo;
}
// Drop atomic property options if not empty
for (int index = m_rgcpiCreateOptions.Count; --index >= 0;)
{
ClassAndPropInfo cpi = (ClassAndPropInfo)m_rgcpiCreateOptions[index];
if (cpi.fieldType == (int)FieldType.kcptOwningAtom)
{
FDO.FdoCache cache = slice.ContainingDataTree.Cache;
if (cache.GetObjProperty(cpi.hvoOwner, (int)(cpi.flid)) != 0)
{
m_rgcpiCreateOptions.RemoveAt(index);
}
}
}
int iBefore = m_rgcpiCreateOptions.Count;
GetCreateSiblingOptions(slice, m_rgcpiCreateOptions, true);
bool fSeq = m_rgcpiCreateOptions.Count > iBefore &&
m_rgcpiCreateOptions[iBefore].fieldType == (int)FieldType.kcptOwningSequence;
int iAfter = m_rgcpiCreateOptions.Count;
if (fSeq)
{
// In a sequence we make another set of options to insert after the current item.
GetCreateSiblingOptions(slice, m_rgcpiCreateOptions, false);
}
for (int index = 0; index < m_rgcpiCreateOptions.Count; index++)
{
ClassAndPropInfo cpi = (ClassAndPropInfo)m_rgcpiCreateOptions[index];
String format = DetailControlsStrings.ksNewItem;
if (index >= iAfter)
{
format = DetailControlsStrings.ksNewItemAfter; // can't happen if not sequence
}
else if (index >= iBefore)
{
if (fSeq)
{
format = DetailControlsStrings.ksNewItemBefore;
}
else // sibling collection
{
format = DetailControlsStrings.ksNewItemWithin;
}
}
m_mnuCreate.MenuItems.Add(new MenuItem(
String.Format(format, new object[] { cpi.signatureClassName, cpi.fieldName }),
new EventHandler(this.HandleCreateMenuItem)));
}
m_mnuCreate.Enabled = m_mnuCreate.MenuItems.Count > 0;
m_helper.SetupDeleteMenu(m_mnuDelete);
}
