///<summary>
/// OffsetIndices
///</summary>
///<param name="index"></param>
///<param name="count"></param>
public void OffsetIndices(int index, int count)
{
for (int i=0; i<_Ranges.Count; i++)
{
SelectedRange range = _Ranges[i];
if (range.EndIndex >= index)
{
if (range.StartIndex < index)
{
SelectedRange range2 = new SelectedRange(index, range.EndIndex);
range.EndIndex = index - 1;
_Ranges.Insert(++i, range2);
}
OffsetRanges(i, count);
CoalesceRanges();
break;
}
}
ValidateRanges();
}
///<summary>
/// RemoveItem
///</summary>
///<param name="index"></param>
///<param name="range"></param>
///<returns></returns>
public void RemoveItem(int index, SelectedRange range)
{
if (range.StartIndex == index)
{
range.StartIndex++;
if (range.StartIndex > range.EndIndex)
_Ranges.Remove(range);
}
else if (range.EndIndex == index)
{
range.EndIndex--;
if (range.StartIndex > range.EndIndex)
_Ranges.Remove(range);
}
else if (range.Contains(index) == true)
{
int i = _Ranges.IndexOf(range);
int endIndex = range.EndIndex;
range.EndIndex = index - 1;
_Ranges.Insert(i + 1,
new SelectedRange(index + 1, endIndex));
}
ValidateRanges();
}
private void AddItem(SelectedRange range, int i, int index)
{
if (range.StartIndex - 1 == index)
{
range.StartIndex--;
}
else if (range.EndIndex + 1 == index)
{
range.EndIndex++;
if (i + 1 < _Ranges.Count)
{
if (_Ranges[i + 1].StartIndex == index + 1)
{
_Ranges[i].EndIndex = _Ranges[i + 1].EndIndex;
_Ranges.RemoveAt(i + 1);
}
}
}
else if (range.Contains(index) == false)
{
SelectedRange selRange = new SelectedRange(index, index);
_Ranges.Insert(i, selRange);
}
ValidateRanges();
}
///<summary>
///</summary>
///<param name="startIndex"></param>
///<param name="endIndex"></param>
public void AddRange(int startIndex, int endIndex)
{
for (int i = 0; i < _Ranges.Count; i++)
{
SelectedRange range = _Ranges[i];
if (endIndex == range.StartIndex - 1)
{
range.StartIndex = startIndex;
if (i > 0)
{
if (_Ranges[i - 1].EndIndex + 1 == startIndex)
{
_Ranges[i - 1].EndIndex = range.EndIndex;
_Ranges.RemoveAt(i);
}
}
CoalesceRanges();
ValidateRanges();
return;
}
if (startIndex == range.EndIndex + 1)
{
range.EndIndex = endIndex;
if (i + 1 < _Ranges.Count)
{
if (_Ranges[i + 1].StartIndex - 1 == endIndex)
{
range.EndIndex = _Ranges[i + 1].EndIndex;
_Ranges.RemoveAt(i + 1);
}
}
CoalesceRanges();
ValidateRanges();
return;
}
}
SelectedRange selRange = null;
for (int i = 0; i < _Ranges.Count; i++)
{
SelectedRange range = _Ranges[i];
if (range.StartIndex > startIndex)
{
selRange = new SelectedRange(startIndex, endIndex);
_Ranges.Insert(i, selRange);
break;
}
}
if (selRange == null)
{
selRange = new SelectedRange(startIndex, endIndex);
_Ranges.Add(selRange);
}
CoalesceRanges();
}
///<summary>
/// FindRange
///</summary>
///<param name="index"></param>
///<param name="selRange"></param>
///<returns></returns>
public bool FindRange(int index, out SelectedRange selRange)
{
foreach (SelectedRange range in _Ranges)
{
if (range.Contains(index) == true)
{
selRange = range;
return (true);
}
}
selRange = null;
return (false);
}
