public ShellApplication()
{
RootPage.Instance.DeviceBackButtonPressed += OnDeviceBackButtonPressed;
// Create popup layout for popups
Popup.PopupLayout = new PopupLayout();
_flyoutMenu = new FlyoutMenu();
_flyoutMenu.IsMainMenuOpenChanging += (object sender, bool isOpen) =>
{
IsMainMenuOpen = isOpen;
IsMainMenuOpenChanging?.Invoke(sender, isOpen);
};
_flyoutMenu.IsMainMenuOpenChanged += (object sender, bool isOpen) =>
{
IsMainMenuOpenChanged?.Invoke(sender, isOpen);
};
_flyoutMenu.IsSubMenuOpenChanged += (object sender, bool isOpen) =>
{
IsSubMenuOpenChanged?.Invoke(sender, isOpen);
};
_flyoutMenu.IsSubMenuOpenChanging += (object sender, bool isOpen) =>
{
IsSubMenuOpen = isOpen;
IsSubMenuOpenChanging?.Invoke(sender, isOpen);
};
// Content
_navigationPage = new NavigationPage();
_flyoutMenu.Content = _navigationPage;
_navigationPage.MenuButtonTapped += (s, a) =>
{
_flyoutMenu.IsMainMenuOpen = true;
};
// MainMenu
_mainMenuNavigationPage = new NavigationPage();
_mainMenuNavigationPage.HasPagesChanged += (object s, bool hasPages) =>
{
if (hasPages)
{
_flyoutMenu.MainMenu = _mainMenuNavigationPage;
}
else
{
_flyoutMenu.MainMenu = null;
}
};
// SubMenu
_subMenuNavigationPage = new NavigationPage();
_subMenuNavigationPage.HasPagesChanged += (object s, bool hasPages) =>
{
if (hasPages)
{
_flyoutMenu.SubMenu = _subMenuNavigationPage;
}
else
{
_flyoutMenu.SubMenu = null;
}
};
// Modal
_modalNavigationPage = new NavigationPage();
_modalNavigationPage.IsVisible = false;
_modalNavigationPage.HasPagesChanged += (object s, bool hasPages) =>
{
_modalNavigationPage.IsVisible = hasPages;
};
// Titlebar
_titleBarSeparator = new BoxView();
_titleBarSeparator.VerticalOptions = LayoutOptions.Start;
_titleBarSeparator.HeightRequest = TitleBarSeparatorThickness;
_titleBarSeparator.BackgroundColor = TitleBarSeparatorColor;
// Add navigation page and popup layout to root page content
StackLayout m_rootLayout = new StackLayout();
m_rootLayout.Orientation = StackOrientations.Depth;
m_rootLayout.Children.Add(_flyoutMenu);
m_rootLayout.Children.Add(_modalNavigationPage);
m_rootLayout.Children.Add(Popup.PopupLayout);
m_rootLayout.Children.Add(_titleBarSeparator);
// Add to content
RootPage.Instance.Content = m_rootLayout;
MainPage = RootPage.Instance;
}
private void OnIsSubMenuOpenChanged(object sender, bool e)
{
IsSubMenuOpenChanged?.Invoke(sender, e);
}