/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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 Communicator client 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):
 *   David Hyatt <hyatt@netscape.com> (Original Author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsXBLProtoImplMember_h__
#define nsXBLProtoImplMember_h__

#include "nsIAtom.h"
#include "nsString.h"
#include "jsapi.h"
#include "nsIContent.h"
#include "nsString.h"
#include "nsIJSRuntimeService.h"
#include "nsIServiceManager.h"
#include "nsReadableUtils.h"
#include "nsContentUtils.h"
#include "nsCycleCollectionParticipant.h"

class nsIScriptContext;
struct JSRuntime;
class nsIJSRuntimeService;

struct nsXBLTextWithLineNumber
{
  PRUnichar* mText;
  PRUint32 mLineNumber;

  nsXBLTextWithLineNumber() :
    mText(nsnull),
    mLineNumber(0)
  {
    MOZ_COUNT_CTOR(nsXBLTextWithLineNumber);
  }

  ~nsXBLTextWithLineNumber() {
    MOZ_COUNT_DTOR(nsXBLTextWithLineNumber);
    if (mText) {
      nsMemory::Free(mText);
    }
  }

  void AppendText(const nsAString& aText) {
    if (mText) {
      PRUnichar* temp = mText;
      mText = ToNewUnicode(nsDependentString(temp) + aText);
      nsMemory::Free(temp);
    } else {
      mText = ToNewUnicode(aText);
    }
  }

  PRUnichar* GetText() {
    return mText;
  }

  void SetLineNumber(PRUint32 aLineNumber) {
    mLineNumber = aLineNumber;
  }

  PRUint32 GetLineNumber() {
    return mLineNumber;
  }
};

class nsXBLProtoImplMember
{
public:
  nsXBLProtoImplMember(const PRUnichar* aName) :mNext(nsnull) { mName = ToNewUnicode(nsDependentString(aName)); }
  virtual ~nsXBLProtoImplMember() {
    nsMemory::Free(mName);
    NS_CONTENT_DELETE_LIST_MEMBER(nsXBLProtoImplMember, this, mNext);
  }

  nsXBLProtoImplMember* GetNext() { return mNext; }
  void SetNext(nsXBLProtoImplMember* aNext) { mNext = aNext; }

  virtual nsresult InstallMember(nsIScriptContext* aContext,
                                 nsIContent* aBoundElement, 
                                 void* aScriptObject,
                                 void* aTargetClassObject,
                                 const nsCString& aClassStr) = 0;
  virtual nsresult CompileMember(nsIScriptContext* aContext,
                                 const nsCString& aClassStr,
                                 void* aClassObject)=0;

  virtual void Trace(TraceCallback aCallback, void *aClosure) const = 0;

protected:
  friend class nsAutoGCRoot;
  
  nsXBLProtoImplMember* mNext;  // The members of an implementation are chained.
  PRUnichar* mName;               // The name of the field, method, or property.
};

#endif // nsXBLProtoImplMember_h__
