/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: NPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Netscape 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/NPL/ * * 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): * Pierre Phaneuf * * Alternatively, the contents of this file may be used under the terms of * either 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 NPL, 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 NPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #define NS_IMPL_IDS #include "nsISupports.h" #include "nsIComponentManager.h" #include "nsIObserverService.h" #include "nsIObserver.h" #include "nsIEnumerator.h" #include "nsString.h" #include "nsReadableUtils.h" #include "prprf.h" #include #include // needed for libstdc++-v3 #include "nsWeakReference.h" static nsIObserverService *anObserverService = NULL; static void testResult( nsresult rv ) { if ( NS_SUCCEEDED( rv ) ) { cout << "...ok" << endl; } else { cout << "...failed, rv=0x" << hex << (int)rv << endl; } return; } extern ostream &operator<<( ostream &s, nsString &str ) { const char *cstr = ToNewCString(str); s << cstr; delete [] (char*)cstr; return s; } class TestObserver : public nsIObserver, public nsSupportsWeakReference { public: TestObserver( const nsAString &name ) : mName( name ) { NS_INIT_REFCNT(); } virtual ~TestObserver() {} NS_DECL_ISUPPORTS NS_DECL_NSIOBSERVER nsString mName; }; NS_IMPL_ISUPPORTS2( TestObserver, nsIObserver, nsISupportsWeakReference ); NS_IMETHODIMP TestObserver::Observe( nsISupports *aSubject, const char *aTopic, const PRUnichar *someData ) { nsCString topic( aTopic ); nsString data( someData ); /* The annoying double-cast below is to work around an annoying bug in the compiler currently used on wensleydale. This is a test. */ cout << mName << " has observed something: subject@" << (void*)aSubject << " name=" << NS_REINTERPRET_CAST(TestObserver*, NS_REINTERPRET_CAST(void*, aSubject))->mName << " aTopic=" << topic.get() << " someData=" << data << endl; return NS_OK; } int main(int argc, char *argv[]) { nsCString topicA; topicA.Assign( "topic-A" ); nsCString topicB; topicB.Assign( "topic-B" ); nsresult rv; nsresult res = nsComponentManager::CreateInstance("@mozilla.org/observer-service;1", NULL, NS_GET_IID(nsIObserverService), (void **) &anObserverService); if (res == NS_OK) { nsIObserver *aObserver = new TestObserver(NS_LITERAL_STRING("Observer-A")); aObserver->AddRef(); nsIObserver *bObserver = new TestObserver(NS_LITERAL_STRING("Observer-B")); bObserver->AddRef(); cout << "Adding Observer-A as observer of topic-A..." << endl; rv = anObserverService->AddObserver(aObserver, topicA.get(), PR_FALSE); testResult(rv); cout << "Adding Observer-B as observer of topic-A..." << endl; rv = anObserverService->AddObserver(bObserver, topicA.get(), PR_FALSE); testResult(rv); cout << "Adding Observer-B as observer of topic-B..." << endl; rv = anObserverService->AddObserver(bObserver, topicB.get(), PR_FALSE); testResult(rv); cout << "Testing Notify(observer-A, topic-A)..." << endl; rv = anObserverService->NotifyObservers( aObserver, topicA.get(), NS_LITERAL_STRING("Testing Notify(observer-A, topic-A)").get() ); testResult(rv); cout << "Testing Notify(observer-B, topic-B)..." << endl; rv = anObserverService->NotifyObservers( bObserver, topicB.get(), NS_LITERAL_STRING("Testing Notify(observer-B, topic-B)").get() ); testResult(rv); cout << "Testing EnumerateObserverList (for topic-A)..." << endl; nsCOMPtr e; rv = anObserverService->EnumerateObservers(topicA.get(), getter_AddRefs(e)); testResult(rv); cout << "Enumerating observers of topic-A..." << endl; if ( e ) { nsCOMPtr observer; PRBool loop = PR_TRUE; while( NS_SUCCEEDED(e->HasMoreElements(&loop)) && loop) { e->GetNext(getter_AddRefs(observer)); cout << "Calling observe on enumerated observer " << NS_REINTERPRET_CAST(TestObserver*, NS_REINTERPRET_CAST(void*, observer.get()))->mName << "..." << endl; rv = observer->Observe( observer, topicA.get(), NS_LITERAL_STRING("during enumeration").get() ); testResult(rv); } } cout << "...done enumerating observers of topic-A" << endl; cout << "Removing Observer-A..." << endl; rv = anObserverService->RemoveObserver(aObserver, topicA.get()); testResult(rv); cout << "Removing Observer-B (topic-A)..." << endl; rv = anObserverService->RemoveObserver(bObserver, topicB.get()); testResult(rv); cout << "Removing Observer-B (topic-B)..." << endl; rv = anObserverService->RemoveObserver(bObserver, topicA.get()); testResult(rv); } return NS_OK; }