2009-06-15 01:27:29 -07:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Olli Pettay <Olli.Pettay@helsinki.fi>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsDOMEventTargetHelper.h"
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#include "nsContentUtils.h"
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#include "nsEventDispatcher.h"
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#include "nsGUIEvent.h"
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#include "nsIDocument.h"
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMEventListenerWrapper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMEventListenerWrapper)
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NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
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NS_INTERFACE_MAP_END_AGGREGATED(mListener)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMEventListenerWrapper)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMEventListenerWrapper)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMEventListenerWrapper)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mListener)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMEventListenerWrapper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mListener)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMETHODIMP
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nsDOMEventListenerWrapper::HandleEvent(nsIDOMEvent* aEvent)
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{
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return mListener->HandleEvent(aEvent);
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mListenerManager)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mScriptContext)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mOwner)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mListenerManager)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mScriptContext)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mOwner)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMEventTargetHelper)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsPIDOMEventTarget)
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NS_INTERFACE_MAP_ENTRY(nsPIDOMEventTarget)
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NS_INTERFACE_MAP_ENTRY(nsIDOMEventTarget)
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NS_INTERFACE_MAP_ENTRY(nsIDOMNSEventTarget)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF_AMBIGUOUS(nsDOMEventTargetHelper,
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nsPIDOMEventTarget)
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NS_IMPL_CYCLE_COLLECTING_RELEASE_AMBIGUOUS(nsDOMEventTargetHelper,
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nsPIDOMEventTarget)
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NS_IMETHODIMP
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nsDOMEventTargetHelper::AddEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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PRBool aUseCapture)
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{
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return AddEventListener(aType, aListener, aUseCapture, PR_FALSE, 0);
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2009-06-15 01:27:29 -07:00
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}
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NS_IMETHODIMP
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nsDOMEventTargetHelper::RemoveEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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PRBool aUseCapture)
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{
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nsIEventListenerManager* elm = GetListenerManager(PR_FALSE);
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2009-06-15 01:27:29 -07:00
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if (elm) {
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PRInt32 flags = aUseCapture ? NS_EVENT_FLAG_CAPTURE : NS_EVENT_FLAG_BUBBLE;
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elm->RemoveEventListenerByType(aListener, aType, flags, nsnull);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMEventTargetHelper::AddEventListener(const nsAString& aType,
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nsIDOMEventListener *aListener,
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PRBool aUseCapture,
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PRBool aWantsUntrusted,
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PRUint8 optional_argc)
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{
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NS_ASSERTION(!aWantsUntrusted || optional_argc > 0,
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"Won't check if this is chrome, you want to set "
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"aWantsUntrusted to PR_FALSE or make the aWantsUntrusted "
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"explicit by making optional_argc non-zero.");
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2009-06-23 04:23:52 -07:00
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nsIEventListenerManager* elm = GetListenerManager(PR_TRUE);
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2009-06-15 01:27:29 -07:00
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NS_ENSURE_STATE(elm);
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PRInt32 flags = aUseCapture ? NS_EVENT_FLAG_CAPTURE : NS_EVENT_FLAG_BUBBLE;
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if (optional_argc == 0) {
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nsresult rv;
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nsIScriptContext* context = GetContextForEventHandlers(&rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDocument> doc =
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nsContentUtils::GetDocumentFromScriptContext(context);
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aWantsUntrusted = doc && !nsContentUtils::IsChromeDoc(doc);
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}
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2009-06-15 01:27:29 -07:00
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if (aWantsUntrusted) {
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flags |= NS_PRIV_EVENT_UNTRUSTED_PERMITTED;
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}
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2010-01-13 05:50:01 -08:00
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2009-06-15 01:27:29 -07:00
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return elm->AddEventListenerByType(aListener, aType, flags, nsnull);
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}
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NS_IMETHODIMP
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nsDOMEventTargetHelper::GetScriptTypeID(PRUint32 *aLang)
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{
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*aLang = mLang;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMEventTargetHelper::SetScriptTypeID(PRUint32 aLang)
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{
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mLang = aLang;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMEventTargetHelper::DispatchEvent(nsIDOMEvent* aEvent, PRBool* aRetVal)
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{
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nsEventStatus status = nsEventStatus_eIgnore;
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nsresult rv =
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nsEventDispatcher::DispatchDOMEvent(static_cast<nsPIDOMEventTarget*>(this),
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nsnull, aEvent, nsnull, &status);
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*aRetVal = (status != nsEventStatus_eConsumeNoDefault);
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return rv;
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}
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nsresult
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nsDOMEventTargetHelper::RemoveAddEventListener(const nsAString& aType,
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nsRefPtr<nsDOMEventListenerWrapper>& aCurrent,
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nsIDOMEventListener* aNew)
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{
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if (aCurrent) {
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RemoveEventListener(aType, aCurrent, PR_FALSE);
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aCurrent = nsnull;
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}
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if (aNew) {
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aCurrent = new nsDOMEventListenerWrapper(aNew);
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NS_ENSURE_TRUE(aCurrent, NS_ERROR_OUT_OF_MEMORY);
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AddEventListener(aType, aCurrent, PR_FALSE);
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}
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return NS_OK;
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}
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nsresult
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nsDOMEventTargetHelper::GetInnerEventListener(nsRefPtr<nsDOMEventListenerWrapper>& aWrapper,
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nsIDOMEventListener** aListener)
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{
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NS_ENSURE_ARG_POINTER(aListener);
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if (aWrapper) {
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NS_ADDREF(*aListener = aWrapper->GetInner());
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} else {
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*aListener = nsnull;
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}
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return NS_OK;
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}
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nsresult
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nsDOMEventTargetHelper::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
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{
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aVisitor.mCanHandle = PR_TRUE;
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aVisitor.mParentTarget = nsnull;
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return NS_OK;
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}
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nsresult
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nsDOMEventTargetHelper::PostHandleEvent(nsEventChainPostVisitor& aVisitor)
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{
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return NS_OK;
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}
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nsresult
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nsDOMEventTargetHelper::DispatchDOMEvent(nsEvent* aEvent,
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nsIDOMEvent* aDOMEvent,
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nsPresContext* aPresContext,
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nsEventStatus* aEventStatus)
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{
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return
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nsEventDispatcher::DispatchDOMEvent(static_cast<nsPIDOMEventTarget*>(this),
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aEvent, aDOMEvent, aPresContext,
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aEventStatus);
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}
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2009-06-23 04:23:52 -07:00
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nsIEventListenerManager*
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nsDOMEventTargetHelper::GetListenerManager(PRBool aCreateIfNotFound)
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{
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if (!mListenerManager) {
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if (!aCreateIfNotFound) {
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return nsnull;
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}
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nsresult rv = NS_NewEventListenerManager(getter_AddRefs(mListenerManager));
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NS_ENSURE_SUCCESS(rv, nsnull);
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mListenerManager->SetListenerTarget(static_cast<nsPIDOMEventTarget*>(this));
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}
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2009-06-23 04:23:52 -07:00
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return mListenerManager;
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}
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nsresult
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nsDOMEventTargetHelper::AddEventListenerByIID(nsIDOMEventListener *aListener,
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const nsIID& aIID)
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{
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nsIEventListenerManager* elm = GetListenerManager(PR_TRUE);
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NS_ENSURE_STATE(elm);
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return elm->AddEventListenerByIID(aListener, aIID, NS_EVENT_FLAG_BUBBLE);
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}
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nsresult
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nsDOMEventTargetHelper::RemoveEventListenerByIID(nsIDOMEventListener *aListener,
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const nsIID& aIID)
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{
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nsIEventListenerManager* elm = GetListenerManager(PR_FALSE);
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return elm ?
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elm->RemoveEventListenerByIID(aListener, aIID, NS_EVENT_FLAG_BUBBLE) :
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NS_OK;
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}
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nsresult
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nsDOMEventTargetHelper::GetSystemEventGroup(nsIDOMEventGroup** aGroup)
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{
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nsIEventListenerManager* elm = GetListenerManager(PR_TRUE);
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NS_ENSURE_STATE(elm);
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return elm->GetSystemEventGroupLM(aGroup);
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}
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nsIScriptContext*
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nsDOMEventTargetHelper::GetContextForEventHandlers(nsresult* aRv)
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{
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*aRv = CheckInnerWindowCorrectness();
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if (NS_FAILED(*aRv)) {
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return nsnull;
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}
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return mScriptContext;
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}
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