/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * ***** END LICENSE BLOCK ***** */

#include "nsCOMPtr.h"
#include "nsIDOMMutationEvent.h"
#include "nsDOMEvent.h"
#include "nsMutationEvent.h"
#include "nsContentUtils.h"

class nsIPresContext;

class nsDOMMutationEvent : public nsDOMEvent, public nsIDOMMutationEvent
{
  NS_DECL_NSIDOMMUTATIONEVENT
  NS_FORWARD_NSIDOMEVENT(nsDOMEvent::)
  
  NS_DECL_ISUPPORTS_INHERITED

  nsDOMMutationEvent(nsIPresContext* aPresContext, 
                     nsEvent* aEvent);

  ~nsDOMMutationEvent();
};

nsDOMMutationEvent::nsDOMMutationEvent(nsIPresContext* aPresContext,
                                       nsEvent* aEvent)
  :nsDOMEvent(aPresContext, aEvent, NS_LITERAL_STRING("MutationEvents")) 
{  
  if ( aEvent ) {
    nsMutationEvent* mutation = (nsMutationEvent*)aEvent;
    SetTarget(mutation->mTarget);
  }
}

nsDOMMutationEvent::~nsDOMMutationEvent() {
  
}

NS_INTERFACE_MAP_BEGIN(nsDOMMutationEvent)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMMutationEvent)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIDOMEvent, nsIDOMMutationEvent)
  NS_INTERFACE_MAP_ENTRY(nsIPrivateDOMEvent)
  NS_INTERFACE_MAP_ENTRY(nsIDOMMutationEvent)
  NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(MutationEvent)
NS_INTERFACE_MAP_END

NS_IMPL_ADDREF_INHERITED(nsDOMMutationEvent, nsDOMEvent)
NS_IMPL_RELEASE_INHERITED(nsDOMMutationEvent, nsDOMEvent)


NS_IMETHODIMP
nsDOMMutationEvent::GetRelatedNode(nsIDOMNode** aRelatedNode)
{
  *aRelatedNode = nsnull;
  if (mEvent) {
    nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
    *aRelatedNode = mutation->mRelatedNode;
    NS_IF_ADDREF(*aRelatedNode);
  }
  else *aRelatedNode = nsnull;

  return NS_OK;
}

NS_IMETHODIMP
nsDOMMutationEvent::GetPrevValue(nsAString& aPrevValue)
{
  if (mEvent) {
    nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
    if (mutation && mutation->mPrevAttrValue)
      mutation->mPrevAttrValue->ToString(aPrevValue);
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMMutationEvent::GetNewValue(nsAString& aNewValue)
{
  if (mEvent) {
    nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
    if (mutation && mutation->mNewAttrValue)
      mutation->mNewAttrValue->ToString(aNewValue);
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMMutationEvent::GetAttrName(nsAString& aAttrName)
{
  if (mEvent) {
    nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
    if (mutation && mutation->mAttrName)
      mutation->mAttrName->ToString(aAttrName);
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMMutationEvent::GetAttrChange(PRUint16* aAttrChange)
{
  *aAttrChange = 0;
  if (mEvent) {
    nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
    if (mutation && mutation->mAttrChange)
      *aAttrChange = mutation->mAttrChange;
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMMutationEvent::InitMutationEvent(const nsAString& aTypeArg, PRBool aCanBubbleArg, 
                                      PRBool aCancelableArg, nsIDOMNode* aRelatedNodeArg, 
                                      const nsAString& aPrevValueArg, 
                                      const nsAString& aNewValueArg, 
                                      const nsAString& aAttrNameArg,
                                      PRUint16 aAttrChangeArg)
{
  NS_ENSURE_SUCCESS(SetEventType(aTypeArg), NS_ERROR_FAILURE);
  mEvent->flags |= aCanBubbleArg ? NS_EVENT_FLAG_NONE : NS_EVENT_FLAG_CANT_BUBBLE;
  mEvent->flags |= aCancelableArg ? NS_EVENT_FLAG_NONE : NS_EVENT_FLAG_CANT_CANCEL;
  
  nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
  if (mutation) {
    mutation->mRelatedNode = aRelatedNodeArg;
    if (!aPrevValueArg.IsEmpty())
      mutation->mPrevAttrValue = do_GetAtom(aPrevValueArg);
    if (!aNewValueArg.IsEmpty())
      mutation->mNewAttrValue = do_GetAtom(aNewValueArg);
    if (!aAttrNameArg.IsEmpty()) {
      mutation->mAttrName = do_GetAtom(aAttrNameArg);
    }
    mutation->mAttrChange = aAttrChangeArg;
  }
    
  return NS_OK;
}

nsresult NS_NewDOMMutationEvent(nsIDOMEvent** aInstancePtrResult,
                                nsIPresContext* aPresContext,
                                nsEvent *aEvent) 
{
  nsDOMMutationEvent* it = new nsDOMMutationEvent(aPresContext, aEvent);
  if (nsnull == it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  return CallQueryInterface(it, aInstancePtrResult);
}