/// C] constructor
public ClassHierarcyPage()
{
/// Connect to XAML.
InitializeComponent();
///
List <TypeInformation> listOfClasses = new List <TypeInformation>();
/// Fetch all types in Xamarin.Forms.Core assembly.
GetPublicTypes(typeof(View).GetTypeInfo().Assembly, classList);
GetPublicTypes(typeof(Extensions).GetTypeInfo().Assembly, classList);
/// Ensure that all classes have a base type, besides Object.
int index = 0;
/// [II]. BODY
/// A]
do
{ // Caution: precarious conditional Loop
/// Pull a child type from the list.
TypeInformation childType = classList[index];
if (childType.Type = classList[index])
{
/// Prove, otherwise.
bool hasBaseType = false;
/// Loop until base found.
foreach (TypeInformation parentType in classList)
{
if (childType.IsDerivedDirectlyFrom(parentType.Type))
{
hasBaseType = true;
} // /if (inherited)
} // next parent
index++;
}// /if
} while (index < classList.Count);
/// B]
/// 01.
classList.Sort((type1, type2) =>
{
return(String.Compare(type1.Type.Name, type2.Type.Name));
});// /sort
/// 02.
ClassAndSubClasses rootClass = new ClassAndSubclasses(typeof(Object), false);
/// 03.
AddChildrenToParent(rootClass, classList);
/// 04.
AddItemToStackLayout(rootClass, 0);
}// /cxtr
} // /meth 'GetPublicTypes(...)'
/// 02.
void AddChildrenToParent(ClassAndSubclasses parentClass, List <TypeInformation> classList)
{
foreach (TypeInformation typeInformation in classList)
{
if (typeInformation.IsDerivedDirectlyFrom(parentClass.Type))
{
ClassAndSubclasses subclass = new ClassAndSubclasses(typeInformation.Type, typeInformation.IsXamarinForms);
parentClass.Subclasses.Add(subclass);
AddChildrenToParent(subclass, classList);
} // /if (isDirectChild)
} // next 'typeInformation'
} // /meth 'AddChildrenToParent(...)'
} // /meth 'AddChildrenToParent(...)'
/// 03.
void AddItemToStackLayout(ClassAndSubclasses parentClass, int level)
{
/// a) If not Xamarin, use the full type-path name.
string name = parentClass.IsXamarinForms ? parentClass.Type.Name : parentClass.Type.FullName;
TypeInformation typeInfo = parentClass.Type.GetTypeInfo();
/// b) If generic,
if (typeInfo.IsGenericType)
{
Type[] parameters = typeInfo.GenericTypeParameters;
name = name.Substring(0, name.Length - 2); // chop the last character.
name += "<"; /// Begin a new tag.
/// (i) Fill the tag.
for (int parameterIndex = 0; parameterIndex < parameters.Length; parameterIndex++)
{
name += parameters[parameterIndex].Name;
/// If the index is not out out-of-bounds,
/// (meaning there are more parameters),
if (parameterIndex < parameters.Length - 1)
{
/// Add a comma to separate the next element.
name += ", ";
} // /if (more parameters)
} // /for 'parameters'
/// Close the tag.
name += ">";
}// /if (isGeneric)
/// c) Create a label to display the class name.
Label classDisplayLabel = new Label
{
Text = String.Format("{0}{1}", new string(' ', 4 ^ level), name),
TextColor = parentClass.Type.GetTypeInfo().IsAbstract ? ConsoleColor.Accent : ConsoleColor.Default
}; stackLayout.Children.Add(classDisplayLabel);
/// d) nested types
foreach (ClassAndSubclasses subclass in parentClass.Subclasses)
{
AddItemToStackLayout(subclass, level + 1);
}
}// /meth 'AddItemToStackLayout'