protected override void CreateChildElements()
{
this.elementProvider = this.CreateElementProvider();
this.scroller = this.CreateItemScroller();
base.CreateChildElements();
this.InitializeItemScroller(this.scroller);
this.HScrollBar.Maximum = 0;
this.WireEvents();
}
protected override SizeF MeasureOverride(SizeF availableSize)
{
RadTreeViewElement treeViewElement = this.TreeViewElement;
SizeF desiredSize = base.MeasureOverride(availableSize);
int oldHeight = this.Data.ActualSize.Height;
int newHeight = this.ItemHeight;
if (treeViewElement != null && ((this.Editor != null && newHeight < desiredSize.Height) || treeViewElement.AutoSizeItems))
{
newHeight = (int)desiredSize.Height;
this.states[TreeNodeElement.UpdateScrollRangeIfNeeded] = true;
}
else
{
desiredSize.Height = newHeight;
}
if (treeViewElement != null && oldHeight != newHeight &&
(this.states[TreeNodeElement.UpdateScrollRangeIfNeeded] ||
treeViewElement.AllowArbitraryItemHeight || treeViewElement.AutoSizeItems))
{
ItemScroller <RadTreeNode> scroller = treeViewElement.Scroller;
this.Data.ActualSize = new Size(this.Data.ActualSize.Width, newHeight);
scroller.UpdateScrollRange(scroller.Scrollbar.Maximum + (newHeight - oldHeight), false);
}
if (this.Editor == null)
{
this.states[TreeNodeElement.UpdateScrollRangeIfNeeded] = false;
}
if (!float.IsInfinity(availableSize.Width))
{
Size size = desiredSize.ToSize();
this.Data.ActualSize = new Size(this.Data.ActualSize.Width, size.Height);
desiredSize.Width = availableSize.Width;
}
else if (!ContentElement.TextWrap && this.Editor == null)
{
this.Data.ActualSize = desiredSize.ToSize();
}
return(desiredSize);
}
protected override SizeF MeasureOverride(SizeF availableSize)
{
RadTreeViewElement treeViewElement = this.TreeViewElement;
SizeF sizeF = base.MeasureOverride(availableSize);
int height1 = this.Data.ActualSize.Height;
int height2 = this.ItemHeight;
if (treeViewElement != null && (this.Editor != null && (double)height2 < (double)sizeF.Height || treeViewElement.AutoSizeItems))
{
height2 = (int)sizeF.Height;
this.states[4L] = true;
}
else
{
sizeF.Height = (float)height2;
}
if (treeViewElement != null && height1 != height2 && (this.states[4L] || treeViewElement.AllowArbitraryItemHeight || treeViewElement.AutoSizeItems))
{
ItemScroller <RadTreeNode> scroller = treeViewElement.Scroller;
this.Data.ActualSize = new Size(this.Data.ActualSize.Width, height2);
scroller.UpdateScrollRange(scroller.Scrollbar.Maximum + (height2 - height1), false);
}
if (this.Editor == null)
{
this.states[4L] = false;
}
if (!float.IsInfinity(availableSize.Width))
{
this.Data.ActualSize = new Size(this.Data.ActualSize.Width, sizeF.ToSize().Height);
sizeF.Width = availableSize.Width;
}
else if (!this.ContentElement.TextWrap && this.Editor == null)
{
this.Data.ActualSize = sizeF.ToSize();
}
return(sizeF);
}
protected virtual void InitializeItemScroller(ItemScroller <Item> scroller)
{
this.scroller.Scrollbar = this.VScrollBar;
this.scroller.ElementProvider = this.elementProvider;
this.scroller.ScrollerUpdated += new EventHandler(this.scroller_ScrollerUpdated);
}
/// <summary>
/// This method provides a chance to setup the ItemScroller.
/// </summary>
/// <param name="scroller">The item scroller on which properties will be set.</param>
protected virtual void InitializeItemScroller(ItemScroller <Item> scroller)
{
this.scroller.Scrollbar = this.VScrollBar;
this.scroller.ElementProvider = this.elementProvider;
}
