private void AddItemToMenu(ToolbarItemWrapper item)
{
if (item.Item is ToolbarPicker)
{
var pickerItem = (ToolbarPicker)item.Item;
var menuItem = new MenuFlyoutSubItem();
menuItem.DataContext = item;
menuItem.Text = item.Item.Title;
foreach (var toolbarSubItem in ((ToolbarPicker)item.Item).Items)
{
var menuSubItem = new ToggleMenuFlyoutItem();
menuSubItem.DataContext = toolbarSubItem;
menuSubItem.Text = toolbarSubItem.Title;
menuSubItem.Click += MenuSubItem_Click;
menuSubItem.IsChecked = toolbarSubItem == pickerItem.SelectedItem;
menuItem.Items.Add(menuSubItem);
}
MenuFlyout.Items.Add(menuItem);
}
else
{
var menuItem = new MenuFlyoutItem();
menuItem.DataContext = item;
menuItem.Text = item.Item.Title;
menuItem.Command = ((ToolbarButton)item.Item).Command;
MenuFlyout.Items.Add(menuItem);
}
MenuButton.Opacity = 1;
}
private void UpdateItems()
{
var totalItemsWidth = ItemsPanel.Children.OfType <ContentControl>().Sum(c => c.ActualWidth);
if (totalItemsWidth > this.ActualWidth - MenuButton.ActualWidth)
{
int i = ItemsPanel.Children.Count - 1;
while (i >= 0)
{
var control = (ContentControl)ItemsPanel.Children[i];
var position = control.TransformToVisual(ItemsPanel).TransformPoint(new Point());
if (position.X + control.ActualWidth < this.ActualWidth - MenuButton.ActualWidth)
{
break;
}
else
{
var item = (ToolbarItem)control.Content;
var itemWrapper = new ToolbarItemWrapper()
{
ActualWidth = control.ActualWidth, Item = item
};
control.ContentTemplate = null; //doesn't remove correctly without this
ItemsPanel.Children.Remove(control);
AddItemToMenu(itemWrapper);
}
i--;
}
}
else
{
int i = MenuFlyout.Items.Count - 1;
while (i >= 0)
{
var menuItem = MenuFlyout.Items[i];
var itemWrapper = (ToolbarItemWrapper)menuItem.DataContext;
if (totalItemsWidth + itemWrapper.ActualWidth <= this.ActualWidth - MenuButton.ActualWidth)
{
RemoveItemFromMenu(itemWrapper);
AddItemToPanel(itemWrapper.Item);
totalItemsWidth += itemWrapper.ActualWidth;
}
else
{
break;
}
i--;
}
}
}
private void RemoveItemFromMenu(ToolbarItemWrapper item)
{
var menuItem = MenuFlyout.Items.FirstOrDefault(i => i.DataContext == item);
if (menuItem is MenuFlyoutSubItem)
{
foreach (MenuFlyoutItem menuSubItem in ((MenuFlyoutSubItem)menuItem).Items)
{
menuSubItem.Click -= MenuSubItem_Click;
}
}
MenuFlyout.Items.Remove(menuItem);
if (MenuFlyout.Items.Count > 0)
{
MenuButton.Opacity = 1;
}
else
{
MenuButton.Opacity = 0;
}
}
