private static CreateControlCollectionDelegate GetInterceptedCollectionFactory(Type ownerType, Type collectionType)
{
AssertUtils.State(typeof(Control).IsAssignableFrom(ownerType), "ownerType must be of type Control");
AssertUtils.State(typeof(ControlCollection).IsAssignableFrom(collectionType), "collectionType must be of type ControlCollection");
CreateControlCollectionDelegate factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[ownerType];
if (factoryMethod == null)
{
lock (s_collectionFactoryCache)
{
factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[ownerType];
if (factoryMethod == null)
{
Type interceptedCollectionType = GetInterceptedCollectionType(
collectionType
, WebDependencyInjectionUtils.InjectDependenciesRecursive
);
ConstructorInfo ctor = interceptedCollectionType.GetConstructor(new Type[] { typeof(Control) });
DynamicMethod dm = new DynamicMethod(string.Empty, typeof(ControlCollection), new Type[] { typeof(Control) });
ILGenerator il = dm.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Newobj, ctor);
il.Emit(OpCodes.Ret);
factoryMethod = (CreateControlCollectionDelegate)dm.CreateDelegate(typeof(CreateControlCollectionDelegate));
s_collectionFactoryCache[ownerType] = factoryMethod;
}
}
}
return(factoryMethod);
}
static ControlAccessor()
{
SafeField fldControls = null;
MethodInfo fnClear = null;
SecurityCritical.ExecutePrivileged(new PermissionSet(PermissionState.Unrestricted), delegate
{
fnClear = GetMethod("Clear");
fldControls = new SafeField(typeof(ControlCollection).GetField("_controls", BindingFlags.Instance | BindingFlags.NonPublic));
});
s_miClear = fnClear;
ControlsArrayField = fldControls;
CreateControlCollectionDelegate fnBaseCreateControlCollection = null;
AddedControlDelegate fnBaseAddedControl = null;
RemovedControlDelegate fnBaseRemovedControl = null;
VoidMethodDelegate fnBaseClearNamingContainer = null;
SecurityCritical.ExecutePrivileged(new PermissionSet(PermissionState.Unrestricted), delegate
{
fnBaseCreateControlCollection = (CreateControlCollectionDelegate)Delegate.CreateDelegate(typeof(CreateControlCollectionDelegate), GetMethod("CreateControlCollection"));
fnBaseAddedControl = (AddedControlDelegate)Delegate.CreateDelegate(typeof(AddedControlDelegate), GetMethod("AddedControl"));
fnBaseRemovedControl = (RemovedControlDelegate)Delegate.CreateDelegate(typeof(RemovedControlDelegate), GetMethod("RemovedControl"));
fnBaseClearNamingContainer = (VoidMethodDelegate)Delegate.CreateDelegate(typeof(VoidMethodDelegate), GetMethod("ClearNamingContainer"));
});
BaseCreateControlCollection = fnBaseCreateControlCollection;
BaseAddedControl = fnBaseAddedControl;
BaseRemovedControl = fnBaseRemovedControl;
BaseClearNamingContainer = fnBaseClearNamingContainer;
}
static ControlAccessor()
{
SafeField fldControls = null;
MethodInfo fnClear = null;
SecurityCritical.ExecutePrivileged(new PermissionSet(PermissionState.Unrestricted), delegate
{
fnClear = GetMethod("Clear");
fldControls = new SafeField(typeof(ControlCollection).GetField("_controls", BindingFlags.Instance | BindingFlags.NonPublic));
});
s_miClear = fnClear;
ControlsArrayField = fldControls;
CreateControlCollectionDelegate fnBaseCreateControlCollection = null;
AddedControlDelegate fnBaseAddedControl = null;
RemovedControlDelegate fnBaseRemovedControl = null;
VoidMethodDelegate fnBaseClearNamingContainer = null;
SecurityCritical.ExecutePrivileged(new PermissionSet(PermissionState.Unrestricted), delegate
{
fnBaseCreateControlCollection = (CreateControlCollectionDelegate)Delegate.CreateDelegate(typeof(CreateControlCollectionDelegate), GetMethod("CreateControlCollection"));
fnBaseAddedControl = (AddedControlDelegate)Delegate.CreateDelegate(typeof(AddedControlDelegate), GetMethod("AddedControl"));
fnBaseRemovedControl = (RemovedControlDelegate)Delegate.CreateDelegate(typeof(RemovedControlDelegate), GetMethod("RemovedControl"));
fnBaseClearNamingContainer = (VoidMethodDelegate)Delegate.CreateDelegate(typeof(VoidMethodDelegate), GetMethod("ClearNamingContainer"));
});
BaseCreateControlCollection = fnBaseCreateControlCollection;
BaseAddedControl = fnBaseAddedControl;
BaseRemovedControl = fnBaseRemovedControl;
BaseClearNamingContainer = fnBaseClearNamingContainer;
}
private static ControlCollection InterceptCollection(Control owner, ControlCollection originalCollection)
{
CreateControlCollectionDelegate factoryMethod = GetInterceptedCollectionFactory(owner.GetType(), originalCollection.GetType());
ControlCollection interceptedCollection = factoryMethod(owner);
ReflectionUtils.MemberwiseCopy(originalCollection, interceptedCollection);
return(interceptedCollection);
}
internal static ControlCollection TryCreateCollection(Control owner)
{
CreateControlCollectionDelegate factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[owner.GetType()];
if (factoryMethod != null)
{
return(factoryMethod(owner));
}
return(null);
}
private static CreateControlCollectionDelegate GetInterceptedCollectionFactory(Type controlType, Type controlCollectionType)
{
AssertUtils.State(typeof(Control).IsAssignableFrom(controlType), "controlType must be of type Control");
AssertUtils.State(typeof(ControlCollection).IsAssignableFrom(controlCollectionType), "controlCollectionType must be of type ControlCollection");
CreateControlCollectionDelegate factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[controlType];
if (factoryMethod == null)
{
lock (s_collectionFactoryCache)
{
factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[controlType];
if (factoryMethod == null)
{
Type interceptedCollectionType = GetInterceptedCollectionType(controlCollectionType, new InjectDependenciesCallbackHandler(WebDependencyInjectionUtils.InjectDependenciesRecursive));
ConstructorInfo ctor = interceptedCollectionType.GetConstructor(new Type[] { typeof(Control) });
IDynamicConstructor dynCtor = new SafeConstructor(ctor);
s_collectionFactoryCache[controlType] = new CreateControlCollectionDelegate(new CreateControlCollectionWrapper(dynCtor).Create);
}
}
}
return(factoryMethod);
}
private static CreateControlCollectionDelegate GetInterceptedCollectionFactory(Type controlType, Type controlCollectionType)
{
AssertUtils.State( typeof(Control).IsAssignableFrom(controlType), "controlType must be of type Control" );
AssertUtils.State( typeof(ControlCollection).IsAssignableFrom(controlCollectionType), "controlCollectionType must be of type ControlCollection" );
CreateControlCollectionDelegate factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[controlType];
if (factoryMethod == null)
{
lock (s_collectionFactoryCache)
{
factoryMethod = (CreateControlCollectionDelegate)s_collectionFactoryCache[controlType];
if (factoryMethod == null)
{
Type interceptedCollectionType = GetInterceptedCollectionType(controlCollectionType, new InjectDependenciesCallbackHandler(WebDependencyInjectionUtils.InjectDependenciesRecursive));
ConstructorInfo ctor = interceptedCollectionType.GetConstructor(new Type[] {typeof (Control)});
IDynamicConstructor dynCtor = new SafeConstructor(ctor);
s_collectionFactoryCache[controlType] = new CreateControlCollectionDelegate(new CreateControlCollectionWrapper(dynCtor).Create);
}
}
}
return factoryMethod;
}
