mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
114 lines
3.7 KiB
C++
114 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef nsObserverList_h___
|
|
#define nsObserverList_h___
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsTArray.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsCOMArray.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsIWeakReference.h"
|
|
#include "nsHashKeys.h"
|
|
#include "nsISimpleEnumerator.h"
|
|
|
|
struct ObserverRef
|
|
{
|
|
ObserverRef(const ObserverRef& o) :
|
|
isWeakRef(o.isWeakRef), ref(o.ref) { }
|
|
|
|
ObserverRef(nsIObserver* aObserver) : isWeakRef(PR_FALSE), ref(aObserver) { }
|
|
ObserverRef(nsIWeakReference* aWeak) : isWeakRef(PR_TRUE), ref(aWeak) { }
|
|
|
|
PRBool isWeakRef;
|
|
nsCOMPtr<nsISupports> ref;
|
|
|
|
nsIObserver* asObserver() {
|
|
NS_ASSERTION(!isWeakRef, "Isn't a strong ref.");
|
|
return NS_STATIC_CAST(nsIObserver*, (nsISupports*) ref);
|
|
}
|
|
|
|
nsIWeakReference* asWeak() {
|
|
NS_ASSERTION(isWeakRef, "Isn't a weak ref.");
|
|
return NS_STATIC_CAST(nsIWeakReference*, (nsISupports*) ref);
|
|
}
|
|
|
|
PRBool operator==(nsISupports* b) const { return ref == b; }
|
|
};
|
|
|
|
class nsObserverList : public nsCharPtrHashKey
|
|
{
|
|
public:
|
|
nsObserverList(const char *key) : nsCharPtrHashKey(key)
|
|
{ MOZ_COUNT_CTOR(nsObserverList); }
|
|
|
|
~nsObserverList() { MOZ_COUNT_DTOR(nsObserverList); }
|
|
|
|
nsresult AddObserver(nsIObserver* anObserver, PRBool ownsWeak);
|
|
nsresult RemoveObserver(nsIObserver* anObserver);
|
|
|
|
void NotifyObservers(nsISupports *aSubject,
|
|
const char *aTopic,
|
|
const PRUnichar *someData);
|
|
nsresult GetObserverList(nsISimpleEnumerator** anEnumerator);
|
|
|
|
// Fill an array with the observers of this category.
|
|
// The array is filled in last-added-first order.
|
|
void FillObserverArray(nsCOMArray<nsIObserver> &aArray);
|
|
|
|
private:
|
|
nsTArray<ObserverRef> mObservers;
|
|
};
|
|
|
|
class nsObserverEnumerator : public nsISimpleEnumerator
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSISIMPLEENUMERATOR
|
|
|
|
nsObserverEnumerator(nsObserverList* aObserverList);
|
|
|
|
private:
|
|
~nsObserverEnumerator() { }
|
|
|
|
PRInt32 mIndex; // Counts up from 0
|
|
nsCOMArray<nsIObserver> mObservers;
|
|
};
|
|
|
|
#endif /* nsObserverList_h___ */
|