gecko/content/events/public/EventTarget.h
Boris Zbarsky a3d695962d Bug 865377. Give EventTarget a chrome-only getter that returns its global. r=smaug
The idea is that you then do things like t.dispatchEvent(new t.ownerGlobal.Event("something")).
2013-05-30 17:46:39 -04:00

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2.8 KiB
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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/. */
#ifndef mozilla_dom_EventTarget_h_
#define mozilla_dom_EventTarget_h_
#include "nsIDOMEventTarget.h"
#include "nsWrapperCache.h"
#include "nsIDOMEventListener.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/Nullable.h"
#include "nsIAtom.h"
class nsDOMEvent;
class nsIDOMWindow;
namespace mozilla {
namespace dom {
class EventListener;
class EventHandlerNonNull;
// IID for the dom::EventTarget interface
#define NS_EVENTTARGET_IID \
{ 0x0a5aed21, 0x0bab, 0x48b3, \
{ 0xbe, 0x4b, 0xd4, 0xf9, 0xd4, 0xea, 0xc7, 0xdb } }
class EventTarget : public nsIDOMEventTarget,
public nsWrapperCache
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_EVENTTARGET_IID)
// WebIDL API
using nsIDOMEventTarget::AddEventListener;
using nsIDOMEventTarget::RemoveEventListener;
using nsIDOMEventTarget::DispatchEvent;
virtual void AddEventListener(const nsAString& aType,
nsIDOMEventListener* aCallback,
bool aCapture,
const Nullable<bool>& aWantsUntrusted,
ErrorResult& aRv) = 0;
virtual void RemoveEventListener(const nsAString& aType,
nsIDOMEventListener* aCallback,
bool aCapture,
ErrorResult& aRv);
bool DispatchEvent(nsDOMEvent& aEvent, ErrorResult& aRv);
EventHandlerNonNull* GetEventHandler(const nsAString& aType)
{
nsCOMPtr<nsIAtom> type = do_GetAtom(aType);
return GetEventHandler(type);
}
void SetEventHandler(const nsAString& aType, EventHandlerNonNull* aHandler,
ErrorResult& rv)
{
nsCOMPtr<nsIAtom> type = do_GetAtom(aType);
return SetEventHandler(type, aHandler, rv);
}
// Note, for an event 'foo' aType will be 'onfoo'.
virtual void EventListenerAdded(nsIAtom* aType) {}
virtual void EventListenerRemoved(nsIAtom* aType) {}
// Returns an outer window that corresponds to the inner window this event
// target is associated with. Will return null if the inner window is not the
// current inner or if there is no window around at all.
virtual nsIDOMWindow* GetOwnerGlobal() = 0;
protected:
EventHandlerNonNull* GetEventHandler(nsIAtom* aType);
void SetEventHandler(nsIAtom* aType, EventHandlerNonNull* aHandler,
ErrorResult& rv);
};
NS_DEFINE_STATIC_IID_ACCESSOR(EventTarget, NS_EVENTTARGET_IID)
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_EventTarget_h_