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106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_dom_EventTarget_h_
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#define mozilla_dom_EventTarget_h_
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#include "nsIDOMEventTarget.h"
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#include "nsWrapperCache.h"
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#include "nsIAtom.h"
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class nsIDOMWindow;
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class nsIGlobalObject;
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namespace mozilla {
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class ErrorResult;
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class EventListenerManager;
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namespace dom {
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class Event;
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class EventListener;
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class EventHandlerNonNull;
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template <class T> struct Nullable;
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// IID for the dom::EventTarget interface
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#define NS_EVENTTARGET_IID \
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{ 0xde651c36, 0x0053, 0x4c67, \
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{ 0xb1, 0x3d, 0x67, 0xb9, 0x40, 0xfc, 0x82, 0xe4 } }
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class EventTarget : public nsIDOMEventTarget,
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public nsWrapperCache
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_EVENTTARGET_IID)
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// WebIDL API
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using nsIDOMEventTarget::AddEventListener;
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using nsIDOMEventTarget::RemoveEventListener;
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using nsIDOMEventTarget::DispatchEvent;
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virtual void AddEventListener(const nsAString& aType,
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EventListener* aCallback,
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bool aCapture,
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const Nullable<bool>& aWantsUntrusted,
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ErrorResult& aRv) = 0;
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virtual void RemoveEventListener(const nsAString& aType,
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EventListener* aCallback,
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bool aCapture,
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ErrorResult& aRv);
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bool DispatchEvent(Event& aEvent, ErrorResult& aRv);
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// Note, this takes the type in onfoo form!
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EventHandlerNonNull* GetEventHandler(const nsAString& aType)
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{
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nsCOMPtr<nsIAtom> type = do_GetAtom(aType);
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return GetEventHandler(type, EmptyString());
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}
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// Note, this takes the type in onfoo form!
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void SetEventHandler(const nsAString& aType, EventHandlerNonNull* aHandler,
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ErrorResult& rv);
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// Note, for an event 'foo' aType will be 'onfoo'.
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virtual void EventListenerAdded(nsIAtom* aType) {}
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virtual void EventListenerRemoved(nsIAtom* aType) {}
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// Returns an outer window that corresponds to the inner window this event
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// target is associated with. Will return null if the inner window is not the
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// current inner or if there is no window around at all.
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virtual nsIDOMWindow* GetOwnerGlobalForBindings() = 0;
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// The global object this event target is associated with, if any.
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// This may be an inner window or some other global object. This
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// will never be an outer window.
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virtual nsIGlobalObject* GetOwnerGlobal() const = 0;
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/**
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* Get the event listener manager, creating it if it does not already exist.
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*/
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virtual EventListenerManager* GetOrCreateListenerManager() = 0;
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/**
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* Get the event listener manager, returning null if it does not already
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* exist.
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*/
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virtual EventListenerManager* GetExistingListenerManager() const = 0;
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virtual bool HasApzAwareListeners() const;
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protected:
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EventHandlerNonNull* GetEventHandler(nsIAtom* aType,
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const nsAString& aTypeString);
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void SetEventHandler(nsIAtom* aType, const nsAString& aTypeString,
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EventHandlerNonNull* aHandler);
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(EventTarget, NS_EVENTTARGET_IID)
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_EventTarget_h_
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