protected int GetIndexToRemove(ICmObject[] objs, SelectionHelper sel, bool forward)
{
ICmObject obj = GetCmObject(sel, SelectionHelper.SelLimitType.Top);
for (int i = 0; i < objs.Length; i++)
{
if (objs[i] == obj)
{
var tss = sel.GetTss(SelectionHelper.SelLimitType.Anchor);
// if the current ich is at the end of the current string, then we can safely assume
// we are at the end of the current item, so remove it or the next item based on what
// key was pressed, otherwise we are in the middle in which
// case the entire item is selected, or at the beginning, so we remove it or the previous
// item based on what key was pressed
if (sel.IchAnchor == tss.Length)
{
if (forward)
return i == objs.Length ? -1 : i + 1;
return i;
}
if (forward)
return i == objs.Length ? -1 : i;
return i - 1;
}
}
return -1;
}
private void RemoveItemsRequested(object sender, RemoveItemsRequestedEventArgs e)
{
if (m_patternModel.Root.IsLeaf)
{
return;
}
SelectionHelper sel = SelectionHelper.Create(m_view);
ComplexConcPatternNode parent = null;
int index = -1;
if (sel.IsRange)
{
ComplexConcPatternNode[] nodes = CurrentNodes;
if (nodes.Length > 0)
{
parent = nodes[0].Parent;
index = GetNodeIndex(nodes[0]);
foreach (ComplexConcPatternNode node in nodes)
{
node.Parent.Children.Remove(node);
}
}
}
else
{
ComplexConcPatternNode n = GetNode(sel, SelectionHelper.SelLimitType.Top);
parent = n.Parent;
index = GetNodeIndex(n);
ITsString tss = sel.GetTss(SelectionHelper.SelLimitType.Anchor);
// if the current ich is at the end of the current string, then we can safely assume
// we are at the end of the current item, so remove it or the next item based on what
// key was pressed, otherwise we are in the middle in which
// case the entire item is selected, or at the beginning, so we remove it or the previous
// item based on what key was pressed
if (sel.IchAnchor == tss.Length)
{
if (e.Forward)
{
if (index == n.Parent.Children.Count - 1)
{
index = -1;
}
else
{
index++;
}
}
}
else
{
if (!e.Forward)
{
index--;
}
}
if (index != -1)
{
parent.Children.RemoveAt(index);
}
}
if (parent != null && index != -1)
{
if (!parent.IsLeaf)
{
bool isFirstBdry = parent.Children[0] is ComplexConcWordBdryNode;
if ((parent.Children.Count == 1 && isFirstBdry) ||
(parent.Children.Count > 1 && isFirstBdry && !(parent.Children[1] is ComplexConcMorphNode)))
{
parent.Children.RemoveAt(0);
if (index > 0)
{
index--;
}
}
}
if (parent.Children.Count > 1 && parent.Children[parent.Children.Count - 1] is ComplexConcWordBdryNode &&
!(parent.Children[parent.Children.Count - 2] is ComplexConcMorphNode))
{
parent.Children.RemoveAt(parent.Children.Count - 1);
if (index >= parent.Children.Count)
{
index--;
}
}
for (int i = parent.Children.Count - 1; i > 0; i--)
{
if (parent.Children[i] is ComplexConcWordBdryNode)
{
if (parent.Children[i - 1] is ComplexConcWordBdryNode ||
(!(parent.Children[i - 1] is ComplexConcMorphNode) || (i + 1 < parent.Children.Count && !(parent.Children[i + 1] is ComplexConcMorphNode))))
{
parent.Children.RemoveAt(i);
if (index > i)
{
index--;
}
}
}
}
if (!parent.IsLeaf && parent.Children[0] is ComplexConcOrNode)
{
parent.Children.RemoveAt(0);
if (index > 0)
{
index--;
}
}
if (!parent.IsLeaf && parent.Children[parent.Children.Count - 1] is ComplexConcOrNode)
{
parent.Children.RemoveAt(parent.Children.Count - 1);
if (index >= parent.Children.Count)
{
index--;
}
}
for (int i = parent.Children.Count - 1; i > 0; i--)
{
if (parent.Children[i] is ComplexConcOrNode && parent.Children[i - 1] is ComplexConcOrNode)
{
parent.Children.RemoveAt(i);
if (index > i)
{
index--;
}
}
}
if (parent.Parent != null && parent.Children.Count == 1)
{
ComplexConcPatternNode p = parent.Parent;
int parentIndex = GetNodeIndex(parent);
p.Children.RemoveAt(parentIndex);
p.Children.Insert(parentIndex, parent.Children[0]);
index = index == 1 ? parentIndex + 1 : parentIndex;
}
else
{
while (parent.Parent != null && parent.IsLeaf)
{
ComplexConcPatternNode p = parent.Parent;
index = GetNodeIndex(parent);
p.Children.Remove(parent);
parent = p;
}
}
if (index >= parent.Children.Count)
{
ReconstructView(parent, parent.Children.Count - 1, false);
}
else
{
ReconstructView(parent, index, true);
}
}
}