private void ResetViews()
{
using (new SourceAccess(this))
{
int currentIndex = this.Zoombox.ViewStackIndex;
this.IsResettingViews = true;
try
{
this.Clear();
foreach (object item in _source)
{
ZoomboxView view = ZoomboxViewStack.GetViewFromSourceItem(item);
this.Add(view);
}
currentIndex = Math.Min(Math.Max(0, currentIndex), this.Count - 1);
this.Zoombox.ViewStackIndex = currentIndex;
this.Zoombox.SetCurrentViewIndex(currentIndex);
this.Zoombox.RefocusView();
}
finally
{
this.IsResettingViews = false;
}
}
}
private void MoveViews(int oldIndex, int newIndex, IList movedItems)
{
using (new SourceAccess(this))
{
int currentIndex = this.Zoombox.ViewStackIndex;
int indexAfterMove = currentIndex;
// adjust the current index, if it was affected by the move
if (!((oldIndex < currentIndex && newIndex < currentIndex) ||
(oldIndex > currentIndex && newIndex > currentIndex)))
{
if (currentIndex >= oldIndex && currentIndex < oldIndex + movedItems.Count)
{
indexAfterMove += newIndex - oldIndex;
}
else if (currentIndex >= newIndex)
{
indexAfterMove += movedItems.Count;
}
}
this.IsMovingViews = true;
try
{
for (int i = 0; i < movedItems.Count; i++)
{
this.RemoveAt(oldIndex);
}
for (int i = 0; i < movedItems.Count; i++)
{
this.Insert(newIndex + i, ZoomboxViewStack.GetViewFromSourceItem(movedItems[i]));
}
if (indexAfterMove != currentIndex)
{
this.Zoombox.ViewStackIndex = indexAfterMove;
this.Zoombox.SetCurrentViewIndex(indexAfterMove);
}
}
finally
{
this.IsMovingViews = false;
}
}
}
private void InsertViews(int index, IList newItems)
{
using (new SourceAccess(this))
{
foreach (object item in newItems)
{
ZoomboxView view = ZoomboxViewStack.GetViewFromSourceItem(item);
if (index >= this.Count)
{
this.Add(view);
}
else
{
this.Insert(index, view);
}
index++;
}
}
}
public SourceAccess(ZoomboxViewStack viewStack)
{
_viewStack = viewStack;
_viewStack.IsChangeFromSource = true;
}