tor-browser

The Tor Browser
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CustomEvent.cpp (3075B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "CustomEvent.h"
      8 
      9 #include "mozilla/HoldDropJSObjects.h"
     10 #include "mozilla/dom/BindingUtils.h"
     11 #include "mozilla/dom/CustomEventBinding.h"
     12 #include "nsContentUtils.h"
     13 
     14 using namespace mozilla;
     15 using namespace mozilla::dom;
     16 
     17 CustomEvent::CustomEvent(mozilla::dom::EventTarget* aOwner,
     18                         nsPresContext* aPresContext,
     19                         mozilla::WidgetEvent* aEvent)
     20    : Event(aOwner, aPresContext, aEvent), mDetail(JS::NullValue()) {
     21  mozilla::HoldJSObjects(this);
     22 }
     23 
     24 CustomEvent::~CustomEvent() { mozilla::DropJSObjects(this); }
     25 
     26 NS_IMPL_CYCLE_COLLECTION_CLASS(CustomEvent)
     27 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CustomEvent, Event)
     28  mozilla::DropJSObjects(tmp);
     29 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     30 
     31 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CustomEvent, Event)
     32 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     33 
     34 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CustomEvent, Event)
     35  NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDetail)
     36 NS_IMPL_CYCLE_COLLECTION_TRACE_END
     37 
     38 NS_IMPL_ADDREF_INHERITED(CustomEvent, Event)
     39 NS_IMPL_RELEASE_INHERITED(CustomEvent, Event)
     40 
     41 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CustomEvent)
     42 NS_INTERFACE_MAP_END_INHERITING(Event)
     43 
     44 already_AddRefed<CustomEvent> CustomEvent::Constructor(
     45    const GlobalObject& aGlobal, const nsAString& aType,
     46    const CustomEventInit& aParam) {
     47  nsCOMPtr<mozilla::dom::EventTarget> t =
     48      do_QueryInterface(aGlobal.GetAsSupports());
     49  RefPtr<CustomEvent> e = new CustomEvent(t, nullptr, nullptr);
     50  bool trusted = e->Init(t);
     51  JS::Rooted<JS::Value> detail(aGlobal.Context(), aParam.mDetail);
     52  e->InitCustomEvent(aGlobal.Context(), aType, aParam.mBubbles,
     53                     aParam.mCancelable, detail);
     54  e->SetTrusted(trusted);
     55  e->SetComposed(aParam.mComposed);
     56  return e.forget();
     57 }
     58 
     59 JSObject* CustomEvent::WrapObjectInternal(JSContext* aCx,
     60                                          JS::Handle<JSObject*> aGivenProto) {
     61  return mozilla::dom::CustomEvent_Binding::Wrap(aCx, this, aGivenProto);
     62 }
     63 
     64 void CustomEvent::InitCustomEvent(JSContext* aCx, const nsAString& aType,
     65                                  bool aCanBubble, bool aCancelable,
     66                                  JS::Handle<JS::Value> aDetail) {
     67  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
     68 
     69  Event::InitEvent(aType, aCanBubble, aCancelable);
     70  mDetail = aDetail;
     71 }
     72 
     73 void CustomEvent::GetDetail(JSContext* aCx,
     74                            JS::MutableHandle<JS::Value> aRetval) {
     75  aRetval.set(mDetail);
     76 }
     77 
     78 already_AddRefed<CustomEvent> NS_NewDOMCustomEvent(
     79    EventTarget* aOwner, nsPresContext* aPresContext,
     80    mozilla::WidgetEvent* aEvent) {
     81  RefPtr<CustomEvent> it = new CustomEvent(aOwner, aPresContext, aEvent);
     82  return it.forget();
     83 }