protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (e.Button == MouseButtons.Left)
{
Cursor cursorAtPoint = this.owner.GetCursorAtPoint(e.Location);
LayoutControlResizingBehavior behaviorAtPoint = this.owner.GetBehaviorAtPoint(e.Location);
if (cursorAtPoint != Cursors.Default)
{
Orientation resizeType = cursorAtPoint == Cursors.SizeNS ? Orientation.Vertical : Orientation.Horizontal;
if (behaviorAtPoint.BeginResize(e.Location, resizeType))
{
this.capturedBehavior = behaviorAtPoint;
this.capturedBehavior.Resized += new EventHandler(this.ResizingBehavior_Resized);
this.Capture = true;
}
this.canStartDrag = false;
}
else
{
DraggableLayoutControlItem elementAtPoint = this.ElementTree.GetElementAtPoint(e.Location) as DraggableLayoutControlItem;
if (elementAtPoint == null)
{
return;
}
if (elementAtPoint.AssociatedItem is LayoutControlTabbedGroup)
{
LayoutControlTabbedGroup associatedItem = elementAtPoint.AssociatedItem as LayoutControlTabbedGroup;
foreach (LayoutControlTabStripItem controlTabStripItem in (IEnumerable <RadPageViewItem>)associatedItem.TabStrip.Items)
{
if (controlTabStripItem.ControlBoundingRectangle.Contains(e.Location))
{
associatedItem.TabStrip.SelectedItem = (RadPageViewItem)controlTabStripItem;
this.canStartDrag = true;
this.initialMousePos = e.Location;
this.UpdatePreview();
return;
}
}
}
this.SelectItem(elementAtPoint, Control.ModifierKeys == Keys.Control);
this.canStartDrag = true;
this.initialMousePos = e.Location;
}
}
else
{
if (e.Button != MouseButtons.Right || this.SelectedItems.Count > 1)
{
return;
}
this.SelectItem(this.ElementTree.GetElementAtPoint(e.Location) as DraggableLayoutControlItem, false);
}
}
protected override void CreateChildElements()
{
base.CreateChildElements();
this.DrawBorder = false;
this.ThemeRole = nameof(LayoutControlContainerElement);
this.items = new RadItemOwnerCollection();
this.items.ItemTypes = new System.Type[2]
{
typeof(LayoutControlItem),
typeof(LayoutControlGroupItem)
};
this.items.Owner = (RadElement)this;
this.items.ItemsChanged += new ItemChangedDelegate(this.items_ItemsChanged);
this.tree = new LayoutTree(this);
this.resizingBehavior = new LayoutControlResizingBehavior(this);
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
this.canStartDrag = false;
this.Capture = false;
if (this.capturedBehavior != null)
{
this.capturedBehavior.Resized -= new EventHandler(this.ResizingBehavior_Resized);
this.capturedBehavior.EndResize();
this.capturedBehavior = (LayoutControlResizingBehavior)null;
}
if (e.Button != MouseButtons.Right || !this.owner.AllowHiddenItems)
{
return;
}
this.contextMenu.ThemeName = this.ThemeName;
this.contextMenu.Show((Control)this, e.Location);
}