private void HandleVisibleNodeAdded(object sender, JetListViewNodeEventArgs e)
{
Guard.NullArgument(e.Node, "e.Node");
if (_topNode == null) // first node added to the view
{
_topNode = e.Node;
}
UpdateScrollRange();
IViewNode topNode = _topNode;
if (topNode == null)
{
topNode = e.Node;
}
if (_visibleNodeCollection.GetMoveDirection(e.Node, topNode) == MoveDirection.Down)
{
// If we were scrolled so that the top item in the list was visible,
// add the new item to the visible area. If the top item in the list was
// not visible, scroll down so that the visible area remains the same and
// the new item does not appear in it.
if (_scrollOffset == 0)
{
UpdateTopNode();
}
else
{
OnRequestVerticalScroll(_scrollOffset + GetRowHeight(e.Node));
}
}
InvalidateBelow(e.Node);
}
private void HandleNodeChanged(object sender, JetListViewNodeEventArgs e)
{
if (e.Node.Level == 0)
{
GroupHeaderNode groupHeader = GetNodeGroupHeader(e.Node);
int headerIndex = _groupMap.IndexOfValue(groupHeader);
if (headerIndex > 0)
{
GroupHeaderNode prevGroup = (GroupHeaderNode)_groupMap.GetByIndex(headerIndex - 1);
if (prevGroup.TopNode == e.Node)
{
RemoveGroup(prevGroup);
return;
}
}
if (headerIndex < _groupMap.Count - 1)
{
GroupHeaderNode nextGroup = (GroupHeaderNode)_groupMap.GetByIndex(headerIndex + 1);
if (nextGroup.TopNode == e.Node)
{
RemoveGroup(nextGroup);
return;
}
}
}
}
private void HandleVisibleNodeRemoved(object sender, JetListViewNodeEventArgs e)
{
UpdateTopNode();
UpdateScrollRange();
if (_lastRemovedNodeTop >= 0)
{
InvalidateBelow(_lastRemovedNodeTop);
}
}
internal void OnNodeMoved(JetListViewNode node)
{
_version++;
JetListViewNodeEventArgs args = new JetListViewNodeEventArgs(node);
if (NodeMoved != null)
{
NodeMoved(this, args);
}
}
private void HandleNodeMoved(object sender, JetListViewNodeEventArgs e)
{
UpdateTopNode();
int movedNodeTop = GetNodeTop(e.Node);
if (_lastMovingNodeTop >= 0 || movedNodeTop >= 0)
{
InvalidateBelow(Math.Min(_lastMovingNodeTop, movedNodeTop));
}
}
private void HandleNodeExpandChanged(object sender, JetListViewNodeEventArgs e)
{
if (e.Node.Expanded)
{
_rowRenderer.ProcessNodeExpanded(e.Node);
}
else
{
_rowRenderer.ProcessNodeCollapsed(e.Node);
}
UpdateTopNode();
UpdateScrollRange();
InvalidateBelow(e.Node);
}
private void HandleStructureChanged(object sender, JetListViewNodeEventArgs e)
{
Owner.OwnerControl.Invalidate();
}
private void HandleNodeMoving(object sender, JetListViewNodeEventArgs e)
{
ProcessViewNodeRemoving(e.Node);
}
private void HandleNodeChanged(object sender, JetListViewNodeEventArgs e)
{
InvalidateRow(e.Node);
}
private void HandleNodeMoving(object sender, JetListViewNodeEventArgs e)
{
_lastMovingNodeTop = GetNodeTop(e.Node);
}
private void HandleVisibleNodeRemoving(object sender, JetListViewNodeEventArgs e)
{
_lastRemovedNodeTop = GetNodeTop(e.Node);
}
private void HandleNodeChanged(object sender, JetListViewNodeEventArgs e)
{
RecalcColumnWidth(RecalcOnNodeChanged, e.Node);
}
private void HandleNodeRemoved(object sender, JetListViewNodeEventArgs e)
{
RecalcColumnWidth(RecalcAll, e.Node);
}
private void HandleNodeAdded(object sender, JetListViewNodeEventArgs e)
{
ProcessNodeAdded(e.Node);
}