/// <summary>
/// Open the <see cref="MenuItems"/> menu items.
/// </summary>
public void Show()
{
if (menuBar != null)
{
Hide();
}
container = Application.Current;
container.Closing += Container_Closing;
container.Resized += Container_Resized;
var frame = container.Frame;
var position = Position;
if (Host != null)
{
Host.ViewToScreen(container.Frame.X, container.Frame.Y, out int x, out int y);
var pos = new Point(x, y);
pos.Y += Host.Frame.Height - 1;
if (position != pos)
{
Position = position = pos;
}
}
var rect = Menu.MakeFrame(position.X, position.Y, MenuItems.Children);
if (rect.Right >= frame.Right)
{
if (frame.Right - rect.Width >= 0 || !ForceMinimumPosToZero)
{
position.X = frame.Right - rect.Width;
}
else if (ForceMinimumPosToZero)
{
position.X = 0;
}
}
else if (ForceMinimumPosToZero && position.X < 0)
{
position.X = 0;
}
if (rect.Bottom >= frame.Bottom)
{
if (frame.Bottom - rect.Height - 1 >= 0 || !ForceMinimumPosToZero)
{
if (Host == null)
{
position.Y = frame.Bottom - rect.Height - 1;
}
else
{
Host.ViewToScreen(container.Frame.X, container.Frame.Y, out int x, out int y);
var pos = new Point(x, y);
position.Y = pos.Y - rect.Height - 1;
}
}
else if (ForceMinimumPosToZero)
{
position.Y = 0;
}
}
else if (ForceMinimumPosToZero && position.Y < 0)
{
position.Y = 0;
}
menuBar = new MenuBar(new [] { MenuItems })
{
X = position.X,
Y = position.Y,
Width = 0,
Height = 0,
UseSubMenusSingleFrame = UseSubMenusSingleFrame
};
menuBar.isContextMenuLoading = true;
menuBar.MenuAllClosed += MenuBar_MenuAllClosed;
IsShow = true;
menuBar.OpenMenu();
}
public override bool ProcessKey(KeyEvent kb)
{
bool disabled;
switch (kb.Key)
{
case Key.CursorUp:
if (current == -1)
{
break;
}
do
{
disabled = false;
current--;
if (host.UseKeysUpDownAsKeysLeftRight)
{
if (current == -1 && barItems.Children [current + 1].IsFromSubMenu && host.selectedSub > -1)
{
current++;
host.PreviousMenu(true);
break;
}
}
if (current < 0)
{
current = barItems.Children.Length - 1;
}
var item = barItems.Children [current];
if (item == null || !item.IsEnabled())
{
disabled = true;
}
} while (barItems.Children [current] == null || disabled);
SetNeedsDisplay();
break;
case Key.CursorDown:
do
{
current++;
disabled = false;
if (current == barItems.Children.Length)
{
current = 0;
}
var item = barItems.Children [current];
if (item == null || !item.IsEnabled())
{
disabled = true;
}
if (host.UseKeysUpDownAsKeysLeftRight && barItems.Children [current]?.SubMenu != null &&
!disabled && !host.isMenuClosed)
{
CheckSubMenu();
break;
}
if (host.isMenuClosed)
{
host.OpenMenu(host.selected);
}
} while (barItems.Children [current] == null || disabled);
SetNeedsDisplay();
break;
case Key.CursorLeft:
host.PreviousMenu(true);
break;
case Key.CursorRight:
host.NextMenu(barItems.Children [current].IsFromSubMenu ? true : false);
break;
case Key.Esc:
Application.UngrabMouse();
host.CloseAllMenus();
break;
case Key.Enter:
CheckSubMenu();
Run(barItems.Children [current].Action);
break;
default:
// TODO: rune-ify
if (Char.IsLetterOrDigit((char)kb.KeyValue))
{
var x = Char.ToUpper((char)kb.KeyValue);
foreach (var item in barItems.Children)
{
if (item == null)
{
continue;
}
if (item.IsEnabled() && item.HotKey == x)
{
host.CloseMenu();
Run(item.Action);
return(true);
}
}
}
break;
}
return(true);
}
