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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /xpcom/ds/nsIObserverService.idl
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/ds/nsIObserverService.idl')
-rw-r--r--xpcom/ds/nsIObserverService.idl77
1 files changed, 77 insertions, 0 deletions
diff --git a/xpcom/ds/nsIObserverService.idl b/xpcom/ds/nsIObserverService.idl
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#include "nsISupports.idl"
+
+interface nsIObserver;
+interface nsISimpleEnumerator;
+
+/**
+ * nsIObserverService
+ *
+ * Service allows a client listener (nsIObserver) to register and unregister for
+ * notifications of specific string referenced topic. Service also provides a
+ * way to notify registered listeners and a way to enumerate registered client
+ * listeners.
+ */
+
+[scriptable, uuid(D07F5192-E3D1-11d2-8ACD-00105A1B8860)]
+interface nsIObserverService : nsISupports
+{
+
+ /**
+ * AddObserver
+ *
+ * Registers a given listener for a notifications regarding the specified
+ * topic.
+ *
+ * @param anObserve : The interface pointer which will receive notifications.
+ * @param aTopic : The notification topic or subject.
+ * @param ownsWeak : If set to false, the nsIObserverService will hold a
+ * strong reference to |anObserver|. If set to true and
+ * |anObserver| supports the nsIWeakReference interface,
+ * a weak reference will be held. Otherwise an error will be
+ * returned.
+ */
+ void addObserver( in nsIObserver anObserver, in string aTopic, in boolean ownsWeak);
+
+ /**
+ * removeObserver
+ *
+ * Unregisters a given listener from notifications regarding the specified
+ * topic.
+ *
+ * @param anObserver : The interface pointer which will stop recieving
+ * notifications.
+ * @param aTopic : The notification topic or subject.
+ */
+ void removeObserver( in nsIObserver anObserver, in string aTopic );
+
+ /**
+ * notifyObservers
+ *
+ * Notifies all registered listeners of the given topic.
+ *
+ * @param aSubject : Notification specific interface pointer.
+ * @param aTopic : The notification topic or subject.
+ * @param someData : Notification specific wide string.
+ */
+ void notifyObservers( in nsISupports aSubject,
+ in string aTopic,
+ in wstring someData );
+
+ /**
+ * enumerateObservers
+ *
+ * Returns an enumeration of all registered listeners.
+ *
+ * @param aTopic : The notification topic or subject.
+ */
+ nsISimpleEnumerator enumerateObservers( in string aTopic );
+
+
+};
+
+