gecko/dom/workers/EventTarget.cpp

120 lines
3.4 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* 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 "EventTarget.h"
#include "mozilla/dom/EventListenerBinding.h"
#include "mozilla/dom/EventHandlerBinding.h"
USING_WORKERS_NAMESPACE
using mozilla::ErrorResult;
using mozilla::dom::EventListener;
using mozilla::dom::Nullable;
using mozilla::dom::EventHandlerNonNull;
void
EventTarget::_trace(JSTracer* aTrc)
{
mListenerManager._trace(aTrc);
DOMBindingBase::_trace(aTrc);
}
void
EventTarget::_finalize(JSFreeOp* aFop)
{
mListenerManager._finalize(aFop);
DOMBindingBase::_finalize(aFop);
}
already_AddRefed<EventHandlerNonNull>
EventTarget::GetEventListener(const nsAString& aType, ErrorResult& aRv) const
{
JSContext* cx = GetJSContext();
JS::RootedString type(cx,
JS_NewUCStringCopyN(cx, aType.BeginReading(), aType.Length()));
if (!type || !(type = JS_InternJSString(cx, type))) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return nullptr;
}
JS::RootedObject listener(
cx, mListenerManager.GetEventListener(INTERNED_STRING_TO_JSID(cx, type)));
if (!listener) {
return nullptr;
}
nsRefPtr<EventHandlerNonNull> handler = new EventHandlerNonNull(listener);
return handler.forget();
}
void
EventTarget::SetEventListener(const nsAString& aType,
EventHandlerNonNull* aListener,
ErrorResult& aRv)
{
JSContext* cx = GetJSContext();
JS::RootedString type(cx,
JS_NewUCStringCopyN(cx, aType.BeginReading(), aType.Length()));
if (!type || !(type = JS_InternJSString(cx, type))) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
JS::RootedObject listener(cx);
if (aListener) {
listener = aListener->Callable();
}
mListenerManager.SetEventListener(cx, INTERNED_STRING_TO_JSID(cx, type),
listener, aRv);
}
void
EventTarget::AddEventListener(const nsAString& aType,
EventListener* aListener,
bool aCapturing, Nullable<bool> aWantsUntrusted,
ErrorResult& aRv)
{
if (!aListener) {
return;
}
JSContext* cx = GetJSContext();
JS::RootedString type(cx,
JS_NewUCStringCopyN(cx, aType.BeginReading(), aType.Length()));
if (!type || !(type = JS_InternJSString(cx, type))) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
bool wantsUntrusted = !aWantsUntrusted.IsNull() && aWantsUntrusted.Value();
mListenerManager.AddEventListener(cx, INTERNED_STRING_TO_JSID(cx, type),
aListener->Callback(), aCapturing,
wantsUntrusted, aRv);
}
void
EventTarget::RemoveEventListener(const nsAString& aType,
EventListener* aListener,
bool aCapturing, ErrorResult& aRv)
{
if (!aListener) {
return;
}
JSContext* cx = GetJSContext();
JS::RootedString type(cx,
JS_NewUCStringCopyN(cx, aType.BeginReading(), aType.Length()));
if (!type || !(type = JS_InternJSString(cx, type))) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
mListenerManager.RemoveEventListener(cx, INTERNED_STRING_TO_JSID(cx, type),
aListener->Callback(), aCapturing);
}