public ClassHierarchyPage()
{
// Get Xamarin.Forms assembly.
xamarinFormsAssembly = typeof(View).GetTypeInfo().Assembly;
// Loop through all the types.
foreach (Type type in xamarinFormsAssembly.ExportedTypes)
{
TypeInfo typeInfo = type.GetTypeInfo();
// Public types only but exclude interfaces
if (typeInfo.IsPublic && !typeInfo.IsInterface)
{
// Add type to list.
classList.Add(new TypeInformation(type));
}
}
// Ensure that all classes have a base type in the list.
// (i.e., add Attribute, ValueType, Enum, EventArgs, etc.)
int index = 0;
// Watch out! Loops through expanding classList!
do
{
// Get a child type from the list.
TypeInformation childType = classList[index];
if (childType.Type != typeof(Object))
{
bool hasBaseType = false;
// Loop through the list looking for a base type.
foreach (TypeInformation parentType in classList)
{
if (childType.IsDerivedDirectlyFrom(parentType.Type))
{
hasBaseType = true;
}
}
// If there's no base type, add it.
if (!hasBaseType &&
childType.BaseType != typeof(Object))
{
classList.Add(
new TypeInformation(childType.BaseType));
}
}
index++;
}while (index < classList.Count);
// Now sort the list.
classList.Sort((t1, t2) =>
{
return(String.Compare(t1.Type.Name, t2.Type.Name));
});
// Start the display with System.Object.
ClassAndSubclasses rootClass =
new ClassAndSubclasses(typeof(Object));
// Recursive method to build the hierarchy tree.
AddChildrenToParent(rootClass, classList);
// Create the StackLayout for displaying the list.
stackLayout = new StackLayout
{
Spacing = 0
};
// Recursive method for adding items to StackLayout.
AddItemToStackLayout(rootClass, 0);
// Put the StackLayout in a ScrollView.
this.Padding =
new Thickness(0, Device.RuntimePlatform == Device.iOS ? 20 : 0, 0, 0);
this.Content = new ScrollView
{
Content = stackLayout
};
}