public void RemoveEventHandler(EventRegistrationToken token)
{
if ((long)token.Value == 0L)
{
return;
}
lock (this.m_tokens)
this.RemoveEventHandlerNoLock(token);
}
// void PropertyChanged.remove(EventRegistrationToken token)
private void remove_CanExecuteChanged(EventRegistrationToken token)
{
ICommand _this = Unsafe.As <ICommand>(this);
EventRegistrationTokenTable <EventHandler> table = s_weakTable.GetOrCreateValue(_this);
if (table.RemoveEventHandler(token, out EventHandler handler))
{
_this.CanExecuteChanged -= handler;
}
}
// void PropertyChanged.remove(EventRegistrationToken token)
internal void remove_PropertyChanged(EventRegistrationToken token)
{
INotifyPropertyChanged _this = Unsafe.As <INotifyPropertyChanged>(this);
EventRegistrationTokenTable <PropertyChangedEventHandler> table = s_weakTable.GetOrCreateValue(_this);
if (table.RemoveEventHandler(token, out PropertyChangedEventHandler handler))
{
_this.PropertyChanged -= handler;
}
}
// EventRegistrationToken PropertyChanged.add(PropertyChangedEventHandler value)
internal EventRegistrationToken add_PropertyChanged(PropertyChangedEventHandler value)
{
INotifyPropertyChanged _this = Unsafe.As<INotifyPropertyChanged>(this);
EventRegistrationTokenTable<PropertyChangedEventHandler> table = s_weakTable.GetOrCreateValue(_this);
EventRegistrationToken token = table.AddEventHandler(value);
_this.PropertyChanged += value;
return token;
}
private void RemoveEventHandlerNoLock(EventRegistrationToken token)
{
T obj;
if (!this.m_tokens.TryGetValue(token, out obj))
{
return;
}
this.m_tokens.Remove(token);
this.m_invokeList = (T)Delegate.Remove((Delegate)(object)this.m_invokeList, (Delegate)(object)obj);
}
// EventRegistrationToken PropertyChanged.add(EventHandler<object> value)
private EventRegistrationToken add_CanExecuteChanged(EventHandler<object> value)
{
ICommand _this = Unsafe.As<ICommand>(this);
EventRegistrationTokenTable<EventHandler> table = s_weakTable.GetOrCreateValue(_this);
EventHandler handler = ICommandAdapterHelpers.CreateWrapperHandler(value);
EventRegistrationToken token = table.AddEventHandler(handler);
_this.CanExecuteChanged += handler;
return token;
}
internal EventRegistrationToken add_CollectionChanged(NotifyCollectionChangedEventHandler value)
{
INotifyCollectionChanged _this = JitHelpers.UnsafeCast <INotifyCollectionChanged>(this);
EventRegistrationTokenTable <NotifyCollectionChangedEventHandler> table = m_weakTable.GetOrCreateValue(_this);
EventRegistrationToken token = table.AddEventHandler(value);
_this.CollectionChanged += value;
return(token);
}
public bool Push(EventRegistrationToken token)
{
bool flag = false;
if (this.restTokens == null)
{
this.restTokens = new List <EventRegistrationToken>();
flag = true;
}
this.restTokens.Add(token);
return(flag);
}
private void RemoveEventHandlerNoLock(EventRegistrationToken token)
{
if (m_tokens.TryGetValue(token, out T? handler))
{
m_tokens.Remove(token);
// Update the current invocation list to remove the delegate
Delegate?invokeList = (Delegate?)(object?)m_invokeList;
invokeList = MulticastDelegate.Remove(invokeList, (Delegate?)(object?)handler);
m_invokeList = (T?)(object?)invokeList;
}
}
private EventRegistrationToken AddEventHandlerNoLock(T handler)
{
EventRegistrationToken key = EventRegistrationTokenTable <T> .GetPreferredToken(handler);
while (this.m_tokens.ContainsKey(key))
{
key = new EventRegistrationToken(key.Value + 1UL);
}
this.m_tokens[key] = handler;
this.m_invokeList = (T)Delegate.Combine((Delegate)(object)this.m_invokeList, (Delegate)(object)handler);
return(key);
}
internal void remove_PropertyChanged(EventRegistrationToken token)
{
INotifyPropertyChanged _this = JitHelpers.UnsafeCast <INotifyPropertyChanged>(this);
EventRegistrationTokenTable <PropertyChangedEventHandler> table = m_weakTable.GetOrCreateValue(_this);
PropertyChangedEventHandler handler = table.ExtractHandler(token);
if (handler != null)
{
_this.PropertyChanged -= handler;
}
}
// Token: 0x06006363 RID: 25443 RVA: 0x00151F30 File Offset: 0x00150130
private void RemoveEventHandlerNoLock(EventRegistrationToken token)
{
T t;
if (this.m_tokens.TryGetValue(token, out t))
{
this.m_tokens.Remove(token);
Delegate @delegate = (Delegate)((object)this.m_invokeList);
@delegate = Delegate.Remove(@delegate, (Delegate)((object)t));
this.m_invokeList = (T)((object)@delegate);
}
}
// void PropertyChanged.remove(EventRegistrationToken token)
private void remove_CanExecuteChanged(EventRegistrationToken token)
{
ICommand _this = JitHelpers.UnsafeCast <ICommand>(this);
EventRegistrationTokenTable <EventHandler> table = m_weakTable.GetOrCreateValue(_this);
EventHandler handler = table.ExtractHandler(token);
if (handler != null)
{
_this.CanExecuteChanged -= handler;
}
}
// void CollectionChanged.remove(EventRegistrationToken token)
internal void remove_CollectionChanged(EventRegistrationToken token)
{
INotifyCollectionChanged _this = Unsafe.As <INotifyCollectionChanged>(this);
EventRegistrationTokenTable <NotifyCollectionChangedEventHandler> table = s_weakTable.GetOrCreateValue(_this);
NotifyCollectionChangedEventHandler handler = table.ExtractHandler(token);
if (handler != null)
{
_this.CollectionChanged -= handler;
}
}
// Remove the event handler from the table and
// Get the delegate associated with an event registration token if it exists
// If the event registration token is not registered, returns false
public bool RemoveEventHandler(EventRegistrationToken token, [NotNullWhen(true)] out T?handler)
{
lock (m_tokens)
{
if (m_tokens.TryGetValue(token, out handler))
{
RemoveEventHandlerNoLock(token);
return(true);
}
}
return(false);
}
internal T ExtractHandler(EventRegistrationToken token)
{
T obj = default(T);
lock (this.m_tokens)
{
if (this.m_tokens.TryGetValue(token, out obj))
{
this.RemoveEventHandlerNoLock(token);
}
}
return(obj);
}
public bool Pop(out EventRegistrationToken token)
{
if (this.restTokens == null || this.restTokens.Count == 0)
{
token = this.firstToken;
return(false);
}
int index = this.restTokens.Count - 1;
token = this.restTokens[index];
this.restTokens.RemoveAt(index);
return(true);
}
public void RemoveEventHandler(EventRegistrationToken token)
{
// The 0 token is assigned to null handlers, so there's nothing to do
if (token.Value == 0)
{
return;
}
lock (m_tokens)
{
RemoveEventHandlerNoLock(token);
}
}
public void RemoveEventHandler(EventRegistrationToken token)
{
if (token.Value == 0UL)
{
return;
}
Dictionary <EventRegistrationToken, T> tokens = this.m_tokens;
lock (tokens)
{
this.RemoveEventHandlerNoLock(token);
}
}
// Push a new token into this list
// Returns true if you need to copy back this list into the dictionary (so that you
// don't lose change outside the dictionary). false otherwise.
public bool Push(EventRegistrationToken token)
{
bool needCopy = false;
if (restTokens == null)
{
restTokens = new System.Collections.Generic.Internal.List <EventRegistrationToken>();
needCopy = true;
}
restTokens.Add(token);
return(needCopy);
}
// Get the delegate associated with an event registration token if it exists. Additionally,
// remove the registration from the table at the same time. If the token is not registered,
// Extract returns null and does not modify the table.
// [System.Runtime.CompilerServices.FriendAccessAllowed]
internal T ExtractHandler(EventRegistrationToken token)
{
T handler = null;
lock (m_tokens)
{
if (m_tokens.TryGetValue(token, out handler))
{
RemoveEventHandlerNoLock(token);
}
}
return(handler);
}
internal T ExtractHandler(EventRegistrationToken token)
{
T result = default(T);
Dictionary <EventRegistrationToken, T> tokens = this.m_tokens;
lock (tokens)
{
if (this.m_tokens.TryGetValue(token, out result))
{
this.RemoveEventHandlerNoLock(token);
}
}
return(result);
}
// Token: 0x0600635E RID: 25438 RVA: 0x00151CD4 File Offset: 0x0014FED4
private EventRegistrationToken AddEventHandlerNoLock(T handler)
{
EventRegistrationToken preferredToken = EventRegistrationTokenTable <T> .GetPreferredToken(handler);
while (this.m_tokens.ContainsKey(preferredToken))
{
preferredToken = new EventRegistrationToken(preferredToken.Value + 1UL);
}
this.m_tokens[preferredToken] = handler;
Delegate @delegate = (Delegate)((object)this.m_invokeList);
@delegate = Delegate.Combine(@delegate, (Delegate)((object)handler));
this.m_invokeList = (T)((object)@delegate);
return(preferredToken);
}
// Pops the last token
// Returns false if no more tokens left, true otherwise
public bool Pop(out EventRegistrationToken token)
{
// Only 1 token in this list and we just removed the last token
if (restTokens == null || restTokens.Count == 0)
{
token = firstToken;
return(false);
}
int last = restTokens.Count - 1;
token = restTokens[last];
restTokens.RemoveAt(last);
return(true);
}
internal static void AddEventHandler <T>(Func <T, EventRegistrationToken> addMethod,
Action <EventRegistrationToken> removeMethod,
T handler)
{
Debug.Assert(addMethod != null);
Debug.Assert(removeMethod != null);
// Add the method, and make a note of the token -> delegate mapping.
object instance = removeMethod.Target;
#if !RHTESTCL
Debug.Assert(instance != null && !(instance is __ComObject));
#endif
System.Collections.Generic.Internal.Dictionary <object, EventRegistrationTokenList> registrationTokens = GetEventRegistrationTokenTable(instance, removeMethod);
EventRegistrationToken token = addMethod(handler);
try
{
registrationTokens.LockAcquire();
EventRegistrationTokenList tokens;
if (!registrationTokens.TryGetValue(handler, out tokens))
{
tokens = new EventRegistrationTokenList(token);
registrationTokens[handler] = tokens;
}
else
{
bool needCopy = tokens.Push(token);
// You need to copy back this list into the dictionary (so that you don't lose change outside dictionary)
if (needCopy)
{
registrationTokens[handler] = tokens;
}
}
#if false
BCLDebug.Log("INTEROP", "[WinRT_Eventing] Event subscribed for managed instance = " + instance + ", handler = " + handler + "\n");
#endif
}
finally
{
registrationTokens.LockRelease();
}
}
public void RemoveEventHandler(T handler)
{
// To match the Windows Runtime behaivor when adding a null handler, removing one is a no-op
if (handler == null)
{
return;
}
lock (m_tokens)
{
// Fast path - if the delegate is stored with its preferred token, then there's no need to do
// a full search of the table for it. Note that even if we find something stored using the
// preferred token value, it's possible we have a collision and another delegate was using that
// value. Therefore we need to make sure we really have the handler we want before taking the
// fast path.
EventRegistrationToken preferredToken = GetPreferredToken(handler);
T registeredHandler;
if (m_tokens.TryGetValue(preferredToken, out registeredHandler))
{
if (registeredHandler == handler)
{
RemoveEventHandlerNoLock(preferredToken);
return;
}
}
// Slow path - we didn't find the delegate with its preferred token, so we need to fall
// back to a search of the table
foreach (KeyValuePair <EventRegistrationToken, T> registration in m_tokens)
{
if (registration.Value == (T)(object)handler)
{
RemoveEventHandlerNoLock(registration.Key);
// If a delegate has been added multiple times to handle an event, then it
// needs to be removed the same number of times to stop handling the event.
// Stop after the first one we find.
return;
}
}
// Note that falling off the end of the loop is not an error, as removing a registration
// for a handler that is not currently registered is simply a no-op
}
}
internal static void AddEventHandler <T>(Func <T, EventRegistrationToken> addMethod, Action <EventRegistrationToken> removeMethod, T handler)
{
object instanceKey = WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.GetInstanceKey(removeMethod);
EventRegistrationToken token = addMethod(handler);
bool flag = false;
try
{
WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.s_eventCacheRWLock.AcquireReaderLock(-1);
try
{
WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.TokenListCount tokenListCount;
ConditionalWeakTable <object, WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.EventRegistrationTokenListWithCount> registrationTokenTable = WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.GetOrCreateEventRegistrationTokenTable(instanceKey, removeMethod, out tokenListCount);
lock (registrationTokenTable)
{
WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.EventRegistrationTokenListWithCount local_3;
if (registrationTokenTable.FindEquivalentKeyUnsafe((object)handler, out local_3) == null)
{
local_3 = new WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.EventRegistrationTokenListWithCount(tokenListCount, token);
registrationTokenTable.Add((object)handler, local_3);
}
else
{
local_3.Push(token);
}
flag = true;
}
}
finally
{
WindowsRuntimeMarshal.NativeOrStaticEventRegistrationImpl.s_eventCacheRWLock.ReleaseReaderLock();
}
}
catch (Exception ex)
{
if (!flag)
{
removeMethod(token);
}
throw;
}
}
private EventRegistrationToken AddEventHandlerNoLock(T handler)
{
Debug.Assert(handler != null);
// Get a registration token, making sure that we haven't already used the value. This should be quite
// rare, but in the case it does happen, just keep trying until we find one that's unused.
EventRegistrationToken token = GetPreferredToken(handler);
while (m_tokens.ContainsKey(token))
{
token = new EventRegistrationToken(token.Value + 1);
}
m_tokens[token] = handler;
// Update the current invocation list to include the newly added delegate
Delegate invokeList = (Delegate)(object)m_invokeList;
invokeList = MulticastDelegate.Combine(invokeList, (Delegate)(object)handler);
m_invokeList = (T)(object)invokeList;
return(token);
}
internal static void AddEventHandler <T>(Func <T, EventRegistrationToken> addMethod, Action <EventRegistrationToken> removeMethod, T handler)
{
Dictionary <object, WindowsRuntimeMarshal.EventRegistrationTokenList> registrationTokenTable = WindowsRuntimeMarshal.ManagedEventRegistrationImpl.GetEventRegistrationTokenTable(removeMethod.Target, removeMethod);
EventRegistrationToken token = addMethod(handler);
lock (registrationTokenTable)
{
WindowsRuntimeMarshal.EventRegistrationTokenList local_4;
if (!registrationTokenTable.TryGetValue((object)handler, out local_4))
{
local_4 = new WindowsRuntimeMarshal.EventRegistrationTokenList(token);
registrationTokenTable[(object)handler] = local_4;
}
else
{
if (!local_4.Push(token))
{
return;
}
registrationTokenTable[(object)handler] = local_4;
}
}
}
// void PropertyChanged.remove(EventRegistrationToken token)
private void remove_CanExecuteChanged(EventRegistrationToken token)
{
ICommand _this = JitHelpers.UnsafeCast<ICommand>(this);
EventRegistrationTokenTable<EventHandler> table = s_weakTable.GetOrCreateValue(_this);
EventHandler handler = table.ExtractHandler(token);
if (handler != null)
{
_this.CanExecuteChanged -= handler;
}
}
public bool Pop(out EventRegistrationToken token)
{
return(this._tokenList.Pop(out token));
}
// void PropertyChanged.remove(EventRegistrationToken token)
internal void remove_PropertyChanged(EventRegistrationToken token)
{
INotifyPropertyChanged _this = JitHelpers.UnsafeCast<INotifyPropertyChanged>(this);
EventRegistrationTokenTable<PropertyChangedEventHandler> table = s_weakTable.GetOrCreateValue(_this);
PropertyChangedEventHandler handler = table.ExtractHandler(token);
if (handler != null)
{
_this.PropertyChanged -= handler;
}
}
