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comparison: dom/events/EventTarget.h
dom/events/EventTarget.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef mozilla_dom_EventTarget_h_ | |
| 7 #define mozilla_dom_EventTarget_h_ | |
| 8 | |
| 9 #include "nsIDOMEventTarget.h" | |
| 10 #include "nsWrapperCache.h" | |
| 11 #include "nsIAtom.h" | |
| 12 | |
| 13 class nsIDOMWindow; | |
| 14 class nsIDOMEventListener; | |
| 15 | |
| 16 namespace mozilla { | |
| 17 | |
| 18 class ErrorResult; | |
| 19 class EventListenerManager; | |
| 20 | |
| 21 namespace dom { | |
| 22 | |
| 23 class Event; | |
| 24 class EventListener; | |
| 25 class EventHandlerNonNull; | |
| 26 template <class T> struct Nullable; | |
| 27 | |
| 28 // IID for the dom::EventTarget interface | |
| 29 #define NS_EVENTTARGET_IID \ | |
| 30 { 0xce3817d0, 0x177b, 0x402f, \ | |
| 31 { 0xae, 0x75, 0xf8, 0x4e, 0xbe, 0x5a, 0x07, 0xc3 } } | |
| 32 | |
| 33 class EventTarget : public nsIDOMEventTarget, | |
| 34 public nsWrapperCache | |
| 35 { | |
| 36 public: | |
| 37 NS_DECLARE_STATIC_IID_ACCESSOR(NS_EVENTTARGET_IID) | |
| 38 | |
| 39 // WebIDL API | |
| 40 using nsIDOMEventTarget::AddEventListener; | |
| 41 using nsIDOMEventTarget::RemoveEventListener; | |
| 42 using nsIDOMEventTarget::DispatchEvent; | |
| 43 virtual void AddEventListener(const nsAString& aType, | |
| 44 EventListener* aCallback, | |
| 45 bool aCapture, | |
| 46 const Nullable<bool>& aWantsUntrusted, | |
| 47 ErrorResult& aRv) = 0; | |
| 48 virtual void RemoveEventListener(const nsAString& aType, | |
| 49 EventListener* aCallback, | |
| 50 bool aCapture, | |
| 51 ErrorResult& aRv); | |
| 52 bool DispatchEvent(Event& aEvent, ErrorResult& aRv); | |
| 53 | |
| 54 // Note, this takes the type in onfoo form! | |
| 55 EventHandlerNonNull* GetEventHandler(const nsAString& aType) | |
| 56 { | |
| 57 nsCOMPtr<nsIAtom> type = do_GetAtom(aType); | |
| 58 return GetEventHandler(type, EmptyString()); | |
| 59 } | |
| 60 | |
| 61 // Note, this takes the type in onfoo form! | |
| 62 void SetEventHandler(const nsAString& aType, EventHandlerNonNull* aHandler, | |
| 63 ErrorResult& rv); | |
| 64 | |
| 65 // Note, for an event 'foo' aType will be 'onfoo'. | |
| 66 virtual void EventListenerAdded(nsIAtom* aType) {} | |
| 67 virtual void EventListenerRemoved(nsIAtom* aType) {} | |
| 68 | |
| 69 // Returns an outer window that corresponds to the inner window this event | |
| 70 // target is associated with. Will return null if the inner window is not the | |
| 71 // current inner or if there is no window around at all. | |
| 72 virtual nsIDOMWindow* GetOwnerGlobal() = 0; | |
| 73 | |
| 74 /** | |
| 75 * Get the event listener manager, creating it if it does not already exist. | |
| 76 */ | |
| 77 virtual EventListenerManager* GetOrCreateListenerManager() = 0; | |
| 78 | |
| 79 /** | |
| 80 * Get the event listener manager, returning null if it does not already | |
| 81 * exist. | |
| 82 */ | |
| 83 virtual EventListenerManager* GetExistingListenerManager() const = 0; | |
| 84 | |
| 85 protected: | |
| 86 EventHandlerNonNull* GetEventHandler(nsIAtom* aType, | |
| 87 const nsAString& aTypeString); | |
| 88 void SetEventHandler(nsIAtom* aType, const nsAString& aTypeString, | |
| 89 EventHandlerNonNull* aHandler); | |
| 90 }; | |
| 91 | |
| 92 NS_DEFINE_STATIC_IID_ACCESSOR(EventTarget, NS_EVENTTARGET_IID) | |
| 93 | |
| 94 } // namespace dom | |
| 95 } // namespace mozilla | |
| 96 | |
| 97 #endif // mozilla_dom_EventTarget_h_ |
