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65 lines
2.2 KiB
Plaintext
65 lines
2.2 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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interface nsIRunnable;
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[scriptable, uuid(4e8febe4-6631-49dc-8ac9-308c1cb9b09c)]
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interface nsIEventTarget : nsISupports
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{
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/**
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* Dispatch an event to this event target. This function may be called from
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* any thread, and it may be called re-entrantly.
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*
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* @param event
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* The event to dispatch.
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* @param flags
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* The flags modifying event dispatch. The flags are described in detail
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* below.
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*
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* @throws NS_ERROR_INVALID_ARG
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* Indicates that event is null.
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* @throws NS_ERROR_UNEXPECTED
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* Indicates that the thread is shutting down and has finished processing
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* events, so this event would never run and has not been dispatched.
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*/
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void dispatch(in nsIRunnable event, in unsigned long flags);
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/**
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* This flag specifies the default mode of event dispatch, whereby the event
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* is simply queued for later processing. When this flag is specified,
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* dispatch returns immediately after the event is queued.
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*/
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const unsigned long DISPATCH_NORMAL = 0;
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/**
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* This flag specifies the synchronous mode of event dispatch, in which the
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* dispatch method does not return until the event has been processed.
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*
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* NOTE: passing this flag to dispatch may have the side-effect of causing
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* other events on the current thread to be processed while waiting for the
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* given event to be processed.
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*/
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const unsigned long DISPATCH_SYNC = 1;
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/**
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* Check to see if this event target is associated with the current thread.
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*
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* @returns
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* A boolean value that if "true" indicates that events dispatched to this
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* event target will run on the current thread (i.e., the thread calling
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* this method).
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*/
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boolean isOnCurrentThread();
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};
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%{C++
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// convenient aliases:
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#define NS_DISPATCH_NORMAL nsIEventTarget::DISPATCH_NORMAL
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#define NS_DISPATCH_SYNC nsIEventTarget::DISPATCH_SYNC
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%}
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