// Private methods
private static ToolStripItem CloneItem(this ToolStripItem source, ToolStripCloneOptions options)
{
switch (source)
{
case ToolStripSeparator _:
case ToolStripMenuItem separator when separator.Text == @"-":
return(new ToolStripSeparator());
case ToolStripMenuItem menuItem:
var copyClickHandler = (options & ToolStripCloneOptions.CopyClickHandler) != 0;
var target = new ToolStripMenuItem(
menuItem.Text,
menuItem.Image,
copyClickHandler ? (sender, e) => menuItem.PerformClick() : (EventHandler)null,
menuItem.ShortcutKeys)
{
Checked = menuItem.Checked,
Enabled = menuItem.Enabled,
Font = menuItem.Font,
ShortcutKeyDisplayString = menuItem.ShortcutKeyDisplayString,
Tag = menuItem.Tag,
ToolTipText = menuItem.ToolTipText
};
if (menuItem.HasDropDownItems)
{
menuItem.DropDownItems.CloneTo(target.DropDownItems, options);
}
return(target);
}
return(null);
}
/// <summary> /// Copy the DropDownItems from a ToolStripDropDownItem to a ToolStrip. /// </summary> /// <param name="source">The source, contributing the items to be copied.</param> /// <param name="target">The target, receiving the copies.</param> /// <param name="options">Flags determining details of the cloning performed, such as /// whether the destination items will be cleared before the copy operation, or /// whether an existing OnClick event handler will be copied across."</param> public static void CloneTo(this ToolStripDropDownItem source, ToolStrip target, ToolStripCloneOptions options) => source?.DropDownItems.CloneTo(target?.Items, options);
private static void CloneTo(this ToolStripItemCollection source, ToolStripItemCollection target, ToolStripCloneOptions options)
{
if ((options & ToolStripCloneOptions.ClearTarget) != 0)
{
target.Clear();
}
foreach (ToolStripItem item in source)
{
target.Add(item.CloneItem(options));
}
}
