/// <summary>
/// Stops the TreeView updates until EndUpdate is called, then updates according to the provided update flags.
/// </summary>
public void BeginUpdate(TreeViewUpdateFlags flags)
{
this.updating = flags;
this.beginUpdateCalls += 1;
}
/// <summary>
/// Updates the TreeView according to the supplied update flags.
/// If BeginUpdate was called before, the flags are added to the update queue.
/// </summary>
public void Update(TreeViewUpdateFlags flags)
{
this.SetUpdateFlag(flags);
if (this.beginUpdateCalls == 0)
this.EndUpdate();
}
/// <summary>
/// Sets one or more update flags.
/// </summary>
private void SetUpdateFlag(TreeViewUpdateFlags flag)
{
this.updating |= flag;
}
/// <summary>
/// Unsets one or more update flags
/// </summary>
private void RemoveUpdateFlag(TreeViewUpdateFlags flag)
{
this.updating &= ~flag;
}
/// <summary>
/// Tests if one or more update flags are set.
/// </summary>
private Boolean TestUpdateFlag(TreeViewUpdateFlags flag)
{
return (this.updating & flag) == flag;
}