зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.0 KiB
C++
67 строки
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef nsObserverList_h___
|
|
#define nsObserverList_h___
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsCOMArray.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsHashKeys.h"
|
|
#include "nsMaybeWeakPtr.h"
|
|
#include "nsSimpleEnumerator.h"
|
|
#include "mozilla/Attributes.h"
|
|
|
|
class nsObserverList : public nsCharPtrHashKey {
|
|
friend class nsObserverService;
|
|
|
|
public:
|
|
explicit nsObserverList(const char* aKey) : nsCharPtrHashKey(aKey) {
|
|
MOZ_COUNT_CTOR(nsObserverList);
|
|
}
|
|
|
|
nsObserverList(nsObserverList&& aOther)
|
|
: nsCharPtrHashKey(std::move(aOther)),
|
|
mObservers(std::move(aOther.mObservers)) {}
|
|
|
|
~nsObserverList() { MOZ_COUNT_DTOR(nsObserverList); }
|
|
|
|
MOZ_MUST_USE nsresult AddObserver(nsIObserver* aObserver, bool aOwnsWeak);
|
|
MOZ_MUST_USE nsresult RemoveObserver(nsIObserver* aObserver);
|
|
|
|
void NotifyObservers(nsISupports* aSubject, const char* aTopic,
|
|
const char16_t* aSomeData);
|
|
void GetObserverList(nsISimpleEnumerator** aEnumerator);
|
|
|
|
// Fill an array with the observers of this category.
|
|
// The array is filled in last-added-first order.
|
|
void FillObserverArray(nsCOMArray<nsIObserver>& aArray);
|
|
|
|
// Like FillObserverArray(), but only for strongly held observers.
|
|
void AppendStrongObservers(nsCOMArray<nsIObserver>& aArray);
|
|
|
|
private:
|
|
nsMaybeWeakPtrArray<nsIObserver> mObservers;
|
|
};
|
|
|
|
class nsObserverEnumerator final : public nsSimpleEnumerator {
|
|
public:
|
|
NS_DECL_NSISIMPLEENUMERATOR
|
|
|
|
explicit nsObserverEnumerator(nsObserverList* aObserverList);
|
|
|
|
const nsID& DefaultInterface() override { return NS_GET_IID(nsIObserver); }
|
|
|
|
private:
|
|
~nsObserverEnumerator() override = default;
|
|
|
|
int32_t mIndex; // Counts up from 0
|
|
nsCOMArray<nsIObserver> mObservers;
|
|
};
|
|
|
|
#endif /* nsObserverList_h___ */
|