/// <summary>
/// Helper method that determines whether a given RowCacheChange will have
/// an impact on currently-visible rows.
/// </summary>
/// <param name="change"></param>
/// <returns></returns>
private bool RowCacheChangeIsVisible(RowCacheChange change)
{
int firstVisibleRow = _firstVisibleRow;
int lastVisibleRow = _firstVisibleRow + _visibleRowCount;
int firstChangedRow = change.Start;
int lastChangedRow = change.Start + change.Count;
//If the first changed row (and hence following changes) are visible OR
//The last changed row (and hence prior changes) are visible OR
//if the changes are a super-set of the visible range, then the change is visible.
if ((firstChangedRow >= firstVisibleRow && firstChangedRow <= lastVisibleRow) ||
(lastChangedRow >= firstVisibleRow && lastChangedRow <= lastVisibleRow) ||
(firstChangedRow < firstVisibleRow && lastChangedRow > lastVisibleRow))
{
return true;
}
return false;
}
// Token: 0x060071E1 RID: 29153 RVA: 0x00209034 File Offset: 0x00207234
private void OnPageCacheChanged(object sender, PageCacheChangedEventArgs args)
{
if (this._isLayoutCompleted)
{
List <RowCacheChange> list = new List <RowCacheChange>(args.Changes.Count);
for (int i = 0; i < args.Changes.Count; i++)
{
PageCacheChange pageCacheChange = args.Changes[i];
switch (pageCacheChange.Type)
{
case PageCacheChangeType.Add:
case PageCacheChangeType.Update:
if (pageCacheChange.Start > this.LastPageInCache)
{
RowCacheChange rowCacheChange = this.AddPageRange(pageCacheChange.Start, pageCacheChange.Count);
if (rowCacheChange != null)
{
list.Add(rowCacheChange);
}
}
else if (pageCacheChange.Start + pageCacheChange.Count - 1 <= this.LastPageInCache)
{
RowCacheChange rowCacheChange2 = this.UpdatePageRange(pageCacheChange.Start, pageCacheChange.Count);
if (rowCacheChange2 != null)
{
list.Add(rowCacheChange2);
}
}
else
{
RowCacheChange rowCacheChange3 = this.UpdatePageRange(pageCacheChange.Start, this.LastPageInCache - pageCacheChange.Start);
if (rowCacheChange3 != null)
{
list.Add(rowCacheChange3);
}
rowCacheChange3 = this.AddPageRange(this.LastPageInCache + 1, pageCacheChange.Count - (this.LastPageInCache - pageCacheChange.Start));
if (rowCacheChange3 != null)
{
list.Add(rowCacheChange3);
}
}
break;
case PageCacheChangeType.Remove:
if (this.PageCache.PageCount - 1 < this.LastPageInCache)
{
RowCacheChange rowCacheChange4 = this.TrimPageRange(this.PageCache.PageCount);
if (rowCacheChange4 != null)
{
list.Add(rowCacheChange4);
}
}
if (this._rowCache.Count <= 1 && (this._rowCache.Count == 0 || this._rowCache[0].PageCount < this._layoutColumns))
{
this.RecalcRows(0, this._layoutColumns);
}
break;
default:
throw new ArgumentOutOfRangeException("args");
}
}
RowCacheChangedEventArgs e = new RowCacheChangedEventArgs(list);
this.RowCacheChanged(this, e);
return;
}
if (this._isLayoutRequested)
{
this.RecalcRows(this._layoutPivotPage, this._layoutColumns);
}
}