public override bool OnMouseWheel(Control target, int delta)
{
RadApplicationMenuDropDownElement element = this.PopupElement as RadApplicationMenuDropDownElement;
if (element == null)
{
return(false);
}
if (element.MenuElement.ScrollPanel.VerticalScrollBar.Visibility != ElementVisibility.Visible)
{
return(true);
}
if (delta > 0)
{
element.MenuElement.ScrollPanel.LineUp();
}
else
{
element.MenuElement.ScrollPanel.LineDown();
}
return(true);
}
protected override System.Drawing.SizeF ApplySizeConstraints(System.Drawing.SizeF desiredSize)
{
RadApplicationMenuDropDownElement dropDownElement = this.FindAncestor <RadApplicationMenuDropDownElement>();
if (dropDownElement == null)
{
return(desiredSize);
}
SizeF dropDownElementSize = dropDownElement.DesiredSize;
SizeF clampedSize = base.ApplySizeConstraints(dropDownElement.DesiredSize.ToSize());
float clampMargin = dropDownElementSize.Height - clampedSize.Height;
float clampedWidth = 0;
float clampedHeight = 0;
if (!this.cachedVerticalClampMargin.HasValue || clampMargin > 0)
{
this.cachedVerticalClampMargin = clampMargin;
}
clampMargin = dropDownElementSize.Width - clampedSize.Width;
if (!this.cachedHorizontalClampMargin.HasValue || clampMargin > 0)
{
this.cachedHorizontalClampMargin = clampMargin;
}
clampedWidth = desiredSize.Width - cachedHorizontalClampMargin.Value;
clampedHeight = desiredSize.Height - cachedVerticalClampMargin.Value;
return(new SizeF(clampedWidth, clampedHeight));
}
protected override RadElement CreatePopupElement()
{
RadApplicationMenuDropDownElement popupElement = new RadApplicationMenuDropDownElement();
this.Items.Owner = popupElement.MenuElement.LayoutPanel;
this.RightColumnItems.Owner = popupElement.TopRightContentElement.Layout;
this.buttonItems.Owner = popupElement.BottomContentElement.Layout;
return(popupElement);
}
protected override void ShowCore(Point point, int ownerOffset, RadDirection popupDirection)
{
RadApplicationMenuDropDown dropDown = (RadApplicationMenuDropDown)this.ElementTree.Control;
RadApplicationMenuDropDownElement menuElement = dropDown.PopupElement as RadApplicationMenuDropDownElement;
if (menuElement != null && !this.IsDesignMode)
{
Size size = menuElement.TopRightContentElement.Layout.Size;
size.Width -= 3;
size.Height -= 3;
this.PopupElement.MinSize = size;
this.PopupElement.SetValue(RadDropDownMenuElement.DropDownPositionProperty, DropDownPosition.RightPopupContent);
}
base.ShowCore(point, ownerOffset, popupDirection);
}
protected override void ShowCore(Point point, int ownerOffset, RadDirection popupDirection)
{
RadApplicationMenuDropDownElement popupElement = ((RadDropDownMenu)this.ElementTree.Control).PopupElement as RadApplicationMenuDropDownElement;
if (popupElement != null && !this.IsDesignMode)
{
popupElement.InvalidateMeasure(true);
popupElement.UpdateLayout();
Size size = popupElement.TopRightContentElement.Layout.Size;
size.Width -= 3;
size.Height -= 3;
this.PopupElement.MinSize = size;
int num = (int)this.PopupElement.SetValue(RadDropDownMenuElement.DropDownPositionProperty, (object)DropDownPosition.RightPopupContent);
}
base.ShowCore(point, ownerOffset, popupDirection);
}
protected override void OnDropDownOpening(System.ComponentModel.CancelEventArgs e)
{
base.OnDropDownOpening(e);
if (this.IsDesignMode)
{
RadApplicationMenuDropDownElement dropDownElement = this.DropDownMenu.PopupElement as RadApplicationMenuDropDownElement;
if (dropDownElement != null)
{
dropDownElement.MenuElement.SetValue(RadDropDownMenuElement.DropDownPositionProperty, DropDownPosition.LeftContent);
dropDownElement.TopRightContentElement.SetValue(RadDropDownMenuElement.DropDownPositionProperty, DropDownPosition.RightContent);
foreach (RadElement element in dropDownElement.TopRightContentElement.ChildrenHierarchy)
{
element.SetValue(RadDropDownMenuElement.DropDownPositionProperty, DropDownPosition.RightContent);
}
}
}
}
protected override void OnDropDownOpening(CancelEventArgs e)
{
base.OnDropDownOpening(e);
if (!this.IsDesignMode)
{
return;
}
RadApplicationMenuDropDownElement popupElement = this.DropDownMenu.PopupElement as RadApplicationMenuDropDownElement;
if (popupElement == null)
{
return;
}
int num1 = (int)popupElement.MenuElement.SetValue(RadDropDownMenuElement.DropDownPositionProperty, (object)DropDownPosition.LeftContent);
int num2 = (int)popupElement.TopRightContentElement.SetValue(RadDropDownMenuElement.DropDownPositionProperty, (object)DropDownPosition.RightContent);
foreach (RadObject radObject in popupElement.TopRightContentElement.ChildrenHierarchy)
{
int num3 = (int)radObject.SetValue(RadDropDownMenuElement.DropDownPositionProperty, (object)DropDownPosition.RightContent);
}
}
protected override SizeF ApplySizeConstraints(SizeF desiredSize)
{
RadApplicationMenuDropDownElement ancestor = this.FindAncestor <RadApplicationMenuDropDownElement>();
if (ancestor == null)
{
return(desiredSize);
}
SizeF desiredSize1 = ancestor.DesiredSize;
SizeF sizeF = base.ApplySizeConstraints((SizeF)ancestor.DesiredSize.ToSize());
float num1 = desiredSize1.Height - sizeF.Height;
if (!this.cachedVerticalClampMargin.HasValue || (double)num1 > 0.0)
{
this.cachedVerticalClampMargin = new float?(num1);
}
float num2 = desiredSize1.Width - sizeF.Width;
if (!this.cachedHorizontalClampMargin.HasValue || (double)num2 > 0.0)
{
this.cachedHorizontalClampMargin = new float?(num2);
}
return(new SizeF(desiredSize.Width - this.cachedHorizontalClampMargin.Value, desiredSize.Height - this.cachedVerticalClampMargin.Value));
}