ToolStripMenuItem IUIMenuTreeVisitor <ToolStripMenuItem> .VisitElement(UIMenuNode.Element element)
{
if (element.TextProvider == null && element.IconProvider == null)
{
return(null);
}
UIActionState currentActionState = ActionHandler.TryPerformAction(element.Action, false);
if (!currentActionState.Visible)
{
return(null);
}
var menuItem = UIActionToolStripMenuItem.CreateFrom(element);
menuItem.Update(currentActionState);
var actionHandler = ActionHandler;
menuItem.Click += (_, __) =>
{
try
{
actionHandler.TryPerformAction(element.Action, true);
}
catch (Exception exc)
{
MessageBox.Show(exc.Message);
}
};
return(menuItem);
}
private void MainMenuItem_DropDownOpening(object sender, EventArgs e)
{
var mainMenuItem = (ToolStripDropDownItem)sender;
// Use DefaultForeColor rather than titleBarForeColor when dropped down.
mainMenuItem.ForeColor = DefaultForeColor;
// Remember last toolstrip separator before a developer tool item with FirstInGroup set.
ToolStripSeparator lastSeparator = null;
foreach (ToolStripItem toolStripItem in mainMenuItem.DropDownItems)
{
if (toolStripItem is UIActionToolStripMenuItem menuItem)
{
UIActionState actionState = mainMenuActionHandler.TryPerformAction(menuItem.Action, false);
menuItem.Update(actionState);
if (Session.IsDeveloperTool(menuItem.Action))
{
// Hide instead of disable developer tool items.
bool visible = actionState.UIActionVisibility == UIActionVisibility.Enabled;
menuItem.Visible = visible;
if (lastSeparator != null)
{
lastSeparator.Visible = visible;
}
}
}
lastSeparator = toolStripItem as ToolStripSeparator;
}
}
private bool UpdateMenu()
{
bool atLeastOneItemEnabled = false;
foreach (var menuItem in MenuItem.DropDownItems.OfType <UIActionToolStripMenuItem>())
{
var state = DropDownItemsActionHandler.TryPerformAction(menuItem.Action, false);
menuItem.Update(state);
atLeastOneItemEnabled |= state.Enabled;
}
return(atLeastOneItemEnabled);
}