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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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"
webidl EventTarget;
interface nsIArray;
/**
* Contains an event target along with a count of event listener changes
* affecting accessibility.
*/
[scriptable, uuid(07222b02-da12-4cf4-b2f7-761da007a8d8)]
interface nsIEventListenerChange : nsISupports
{
readonly attribute EventTarget target;
[noscript]
readonly attribute uint32_t countOfEventListenerChangesAffectingAccessibility;
};
[scriptable, function, uuid(aa7c95f6-d3b5-44b3-9597-1d9f19b9c5f2)]
interface nsIListenerChangeListener : nsISupports
{
void listenersChanged(in nsIArray aEventListenerChanges);
};
/**
* An instance of this interface describes how an event listener
* was added to an event target.
*/
[scriptable, uuid(11ba5fd7-8db2-4b1a-9f67-342cfa11afad)]
interface nsIEventListenerInfo : nsISupports
{
/**
* The type of the event for which the listener was added.
* Null if the listener is for all the events.
*/
readonly attribute AString type;
readonly attribute boolean capturing;
readonly attribute boolean allowsUntrusted;
readonly attribute boolean inSystemEventGroup;
/**
* Changing the enabled state works only with listeners implemented in
* JS. An error is thrown for native listeners.
*/
attribute boolean enabled;
/**
* The underlying JS object of the event listener, if this listener
* has one. Null otherwise.
*/
[implicit_jscontext]
readonly attribute jsval listenerObject;
/**
* Tries to serialize event listener to a string.
* Returns null if serialization isn't possible
* (for example with C++ listeners).
*/
AString toSource();
};
[scriptable, uuid(77aab5f7-213d-4db4-9f22-e46dfb774f15)]
interface nsIEventListenerService : nsISupports
{
/**
* Returns an array of nsIEventListenerInfo objects.
* If aEventTarget doesn't have any listeners, this returns null.
*/
Array<nsIEventListenerInfo> getListenerInfoFor(in EventTarget aEventTarget);
/**
* Returns an array of event targets.
* aEventTarget will be at index 0.
* The objects are the ones that would be used as DOMEvent.currentTarget while
* dispatching an event to aEventTarget
* @note Some events, especially 'load', may actually have a shorter
* event target chain than what this methods returns.
*/
[can_run_script]
Array<EventTarget> getEventTargetChainFor(in EventTarget aEventTarget,
in boolean composed);
/**
* Returns true if a event target has any listener for the given type.
*/
boolean hasListenersFor(in EventTarget aEventTarget,
in AString aType);
/**
* Add a system-group eventlistener to a event target.
*/
[implicit_jscontext]
void addSystemEventListener(in EventTarget target,
in AString type,
in jsval listener,
in boolean useCapture);
/**
* Remove a system-group eventlistener from a event target.
*/
[implicit_jscontext]
void removeSystemEventListener(in EventTarget target,
in AString type,
in jsval listener,
in boolean useCapture);
[implicit_jscontext]
void addListenerForAllEvents(in EventTarget target,
in jsval listener,
[optional] in boolean aUseCapture,
[optional] in boolean aWantsUntrusted,
[optional] in boolean aSystemEventGroup);
[implicit_jscontext]
void removeListenerForAllEvents(in EventTarget target,
in jsval listener,
[optional] in boolean aUseCapture,
[optional] in boolean aSystemEventGroup);
void addListenerChangeListener(in nsIListenerChangeListener aListener);
void removeListenerChangeListener(in nsIListenerChangeListener aListener);
};
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