public virtual bool OnNavigatedFrom(MenuBase menu)
{
if (parentMenuList.Contains(menu))
{
parentMenuList.Remove(menu);
var e = NavigatedFrom;
if (e != null)
{
e(this);
}
return(true);
}
return(false);
}
public virtual bool OnNavigatedTo(MenuBase menu)
{
if (parentMenuList.Contains(menu))
{
return(false);
}
parentMenuList.Add(menu);
var e = NavigatedTo;
if (e != null)
{
e(this);
}
return(true);
}
public virtual bool OnNavigatedFrom(MenuBase menu)
{
if (parentMenu == menu)
{
parentMenu = null;
var e = NavigatedFrom;
if (e != null)
{
e(this);
}
return(true);
}
if (parentMenu != null)
{
throw new Exception("Navigated to screen " + this + " in another menu " + parentMenu + ". Can't navigate from in " + menu);
}
return(false);
}
public virtual bool OnNavigatedTo(MenuBase menu)
{
if (parentMenu == menu)
{
return(false);
}
if (parentMenu != null)
{
throw new Exception("Already navigated to screen " + this + " in another menu " + parentMenu + ". Can't navigate in " + menu);
}
parentMenu = menu;
var e = NavigatedTo;
if (e != null)
{
e(this);
}
return(true);
}
public virtual bool OnNavigatedTo(MenuBase menu)
{
if (parentMenu == menu)
{
return false;
}
if (parentMenu != null)
{
throw new Exception("Already navigated to screen " + this + " in another menu " + parentMenu + ". Can't navigate in " + menu);
}
parentMenu = menu;
var e = NavigatedTo;
if (e != null)
{
e(this);
}
return true;
}
public virtual bool OnNavigatedFrom(MenuBase menu)
{
if (parentMenu == menu)
{
parentMenu = null;
var e = NavigatedFrom;
if (e != null)
{
e(this);
}
return true;
}
if (parentMenu != null)
{
throw new Exception("Navigated to screen " + this + " in another menu " + parentMenu + ". Can't navigate from in " + menu);
}
return false;
}
