private void kryptonNavigator1_CloseAction(object sender, CloseActionEventArgs e)
{
// If deleting the last page before the 'new page' then need to switch the
// selection before the close actually gets processed. Otherwise removing the
// second to last page will causing the last 'new page' page to be selected.
// But that would cause a new page to be created! So manually set selection
// to the previous page to prevent this behavior.
if (e.Index == (kryptonNavigator1.Pages.Count - 2))
kryptonNavigator1.SelectedIndex = kryptonNavigator1.Pages.Count - 3;
// You cannot delete the last document page. As the 'new page' page at the end of
// the collection should always be there, we insist that 2 pages must be present. As
// we are now removing a page that means that if there are 3 pages then after the
// remove has completed we should not allow any more removes.
if (kryptonNavigator1.Pages.Count == 3)
kryptonNavigator1.Button.CloseButtonDisplay = ButtonDisplay.ShowDisabled;
}
/// <summary>
/// Raises and processes the CloseAction event.
/// </summary>
/// <param name="page">Page that is requested to be closed.</param>
/// <returns>Returns the action that was performed.</returns>
protected virtual CloseButtonAction OnCloseAction(KryptonPage page)
{
CloseButtonAction cba = CloseButtonAction.None;
// Ignore call as view builder is already destructed
if (!IsDisposed && (_viewBuilder != null))
{
// Do not perform any action at design time
if (!DesignMode)
{
if (Pages.Contains(page))
{
// Create the event arguments
CloseActionEventArgs e = new CloseActionEventArgs(page,
Pages.IndexOf(page),
Button.CloseButtonAction);
if (CloseAction != null)
CloseAction(this, e);
// Return the action we processed
cba = e.Action;
// Process the requested action
switch (e.Action)
{
case CloseButtonAction.None:
// Do nothing
break;
case CloseButtonAction.RemovePage:
// If the page still exists after the event then remove it
if (Pages.Contains(e.Item))
Pages.Remove(e.Item);
break;
case CloseButtonAction.RemovePageAndDispose:
// If the page still exists after the event
if (Pages.Contains(e.Item))
{
// Remove it from the page collection
Pages.Remove(e.Item);
// Dispose of its resources
e.Item.Dispose();
}
break;
case CloseButtonAction.HidePage:
// If the page still exists after the event then hide it
if (Pages.Contains(e.Item))
e.Item.Hide();
break;
default:
// Should never happen!
Debug.Assert(false);
break;
}
}
}
}
return cba;
}
/// <summary>
/// Raises athe CloseAction event.
/// </summary>
/// <param name="e">An CloseActionEventArgs containing the event args.</param>
protected virtual void OnCloseAction(CloseActionEventArgs e)
{
if (CloseAction != null)
CloseAction(this, e);
}
private void OnCellCloseAction(object sender, CloseActionEventArgs e)
{
OnPageCloseClicked(new UniqueNameEventArgs(e.Item.UniqueName));
}
private void kryptonNavigator1_CloseAction(object sender, CloseActionEventArgs e)
{
AddOutput("CloseAction");
}
private void kryptonCell_PageCloseAction(object sender, CloseActionEventArgs e)
{
// Tell the cell instance to not perform any actions with the page, we will remove it if we need to
e.Action = CloseButtonAction.None;
// Use our own routine to close the page, so user is asked to save changes if required
CloseMemoPage(e.Item);
}