private void AddChildrenToParent(ClassAndSubclass pClass, List <TypeInfoPlus> clsList)
{
foreach (var tIp in clsList)
{
if (tIp.IsDerivedDirectlyFrom(pClass.Type))
{
var subClass = new ClassAndSubclass(tIp.Type, tIp.IsXamarinForm);
pClass.Subclass.Add(subClass);
AddChildrenToParent(subClass, clsList);
}
}
}
public S1_ClassHierarchy()
{
InitializeComponent();
List <TypeInfoPlus> clsList = new List <TypeInfoPlus>();
// Get types in Xamarin.Forms.Core assembly
GetPublicTypes(typeof(View).GetTypeInfo().Assembly, clsList);
// Get types in Xamarin.Forms.Xaml assembly
GetPublicTypes(typeof(Extensions).GetTypeInfo().Assembly, clsList);
//Ensure all classes have a base type....
int index = 0;
do
{
var cType = clsList[index];
if (cType.Type != typeof(Object))
{
bool hasBaseType = false;
foreach (var pType in clsList)
{
if (cType.IsDerivedDirectlyFrom(pType.Type))
{
hasBaseType = true;
}
}
//If no base type add
if (!hasBaseType && cType.BaseType != typeof(Object))
{
clsList.Add(new TypeInfoPlus(cType.BaseType, false));
}
}
index++;
} while (index < clsList.Count);
// Sort list!
clsList.Sort((t1, t2) => String.CompareOrdinal(t1.Type.Name, t2.Type.Name));
// Start the display with System.Object...
var rClass = new ClassAndSubclass(typeof(Object), false);
// Recursive method to build the hierarchy tree
AddChildrenToParent(rClass, clsList);
// Recursive method to add items to StackLayout.
AddItemsTosL2(rClass, 0);
}
private void AddItemsTosL2(ClassAndSubclass pClass, int level)
{
// If assembly is not Xamarin.Forms, display full name.
var name = pClass.IsXamarinForm ? pClass.Type.Name : pClass.Type.FullName + " *";
var tInfo = pClass.Type.GetTypeInfo();
// If generic, display angle brackets and parameters
if (tInfo.IsGenericType)
{
Type[] param = tInfo.GenericTypeParameters;
name = name.Substring(0, name.Length - 2);
name += '<';
for (var i = 0; i < param.Length; i++)
{
name += param[i].Name;
if (i < param.Length - 1)
{
name += ", ";
}
}
name += '>';
}
Label label = new Label
{
Text = $"{new string(' ', 4 * level)}{name}",
TextColor = pClass.Type.GetTypeInfo().IsAbstract ? Color.Accent : Color.Default
};
SLayout2.Children.Add(label);
// Now display nested types.
foreach (var sClass in pClass.Subclass)
{
AddItemsTosL2(sClass, level + 1);
}
}