protected bool RemoveContextsFrom(bool forward, SelectionHelper sel, ILcmOwningSequence <IPhSimpleContext> seq,
bool preRemovalSideEffects, out int index)
{
index = -1;
bool reconstruct = true;
ICmObject[] ctxts = seq.Cast <ICmObject>().ToArray();
// if the selection is a range remove all items in the selection
if (sel.IsRange)
{
int[] indices = GetIndicesToRemove(ctxts, sel);
// return index of the item before the removed items
if (indices.Length > 0)
{
index = indices[0] - 1;
}
foreach (int idx in indices)
{
// Sometimes when deleting a range, DeleteUnderlyingObject() takes out
// parts of the rule before this loop gets to it. [LT-9775]
if (ctxts[idx].IsValidObject)
{
ProcessIndicesSimpleContext(seq, ctxts, preRemovalSideEffects, idx);
}
}
}
else
{
int idx = GetIndexToRemove(ctxts, sel, forward);
if (idx > -1)
{
// return index of the item before the removed items
index = idx - 1;
ProcessIndicesSimpleContext(seq, ctxts, preRemovalSideEffects, idx);
}
else
{
// if the backspace button is pressed at the beginning of a cell or the delete
// button is pressed at the end of a cell, don't do anything
reconstruct = false;
}
}
return(reconstruct);
}
protected int InsertContextInto(IPhSimpleContext ctxt, SelectionHelper sel, ILcmOwningSequence <IPhSimpleContext> seq)
{
ICmObject[] ctxts = seq.Cast <ICmObject>().ToArray();
int index = GetInsertionIndex(ctxts, sel);
// if the current selection is a range remove the items we are overwriting
if (sel.IsRange)
{
var indices = GetIndicesToRemove(ctxts, sel);
foreach (int idx in indices)
{
var c = (IPhSimpleContext)ctxts[idx];
c.PreRemovalSideEffects();
seq.Remove(c);
}
}
seq.Insert(index, ctxt);
return(index);
}
