/// <summary>
/// Forces the keyboard focus to the given control, sending a TakeKeyboardFocus
/// message to the specified control. If a control currently has the
/// keyboard focus, that control will receive a ReleaseKeyboardFocus message.
/// </summary>
public void TakeKeyboard(Control control)
{
if (control == null)
{
throw new ArgumentNullException("control");
}
if (control != CurrentKeyboardFocus)
{
control.OnTakeKeyboardFocus();
if (CurrentKeyboardFocus != null)
{
CurrentKeyboardFocus.OnReleaseKeyboardFocus();
}
CurrentKeyboardFocus = control;
}
}
/// <summary>
/// Base method propagates messages to children controls and managers. Override to
/// add custom handling.
/// </summary>
protected internal override void OnMouseButtonDown(MouseData mouseData)
{
base.OnMouseButtonDown(mouseData);
foreach (Manager m in managerList)
{
m.OnMouseButtonDown(mouseData);
}
// If applicable, forward MouseDown and Select to child control
if (CurrentUnderMouse != null && CurrentUnderMouse.IsActive)
{
CurrentUnderMouse.OnMouseButtonDown(mouseData);
LastLBDown = CurrentUnderMouse;
}
// Check to see if a control looses KBFocus if user hit any mouse button outside current focused control
if (CurrentKeyboardFocus != null)
{
if (CurrentKeyboardFocus != CurrentUnderMouse)
{
CurrentKeyboardFocus.OnReleaseKeyboardFocus();
CurrentKeyboardFocus = null;
}
}
// Give KBFocus to child on left button down, if applicable
if (CurrentUnderMouse != null &&
CurrentUnderMouse.CanHaveKeyboardFocus &&
CurrentUnderMouse.HasKeyboardFocus == false &&
mouseData.MouseButton == MouseButton.LeftButton &&
CurrentUnderMouse.IsActive)
{
CurrentKeyboardFocus = CurrentUnderMouse;
CurrentKeyboardFocus.OnTakeKeyboardFocus();
}
}