/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

#ifndef nsXBLProtoImpl_h__

#define nsXBLProtoImpl_h__

#include "nsMemory.h"

#include "nsXBLPrototypeHandler.h"

#include "nsXBLProtoImplMember.h"

#include "nsXBLProtoImplField.h"

#include "nsXBLBinding.h"

class nsXBLPrototypeBinding;

class nsXBLProtoImplAnonymousMethod;

class nsXBLProtoImpl final

{

public:

  nsXBLProtoImpl()

    : mPrecompiledMemberHolder(nullptr),

      mMembers(nullptr),

      mFields(nullptr),

      mConstructor(nullptr),

      mDestructor(nullptr)

  {

    MOZ_COUNT_CTOR(nsXBLProtoImpl);

  }

  ~nsXBLProtoImpl()

  {

    MOZ_COUNT_DTOR(nsXBLProtoImpl);

    // Note: the constructor and destructor are in mMembers, so we'll

    // clean them up automatically.

    delete mMembers;

    delete mFields;

  }

  nsresult InstallImplementation(nsXBLPrototypeBinding* aPrototypeBinding, nsXBLBinding* aBinding);

private:

  nsresult InitTargetObjects(nsXBLPrototypeBinding* aBinding,

                             nsIContent* aBoundElement,

                             JS::MutableHandle<JSObject*> aTargetClassObject,

                             bool* aTargetIsNew);

public:

  nsresult CompilePrototypeMembers(nsXBLPrototypeBinding* aBinding);

  bool LookupMember(JSContext* aCx, nsString& aName, JS::Handle<jsid> aNameAsId,

                    JS::MutableHandle<JS::PropertyDescriptor> aDesc,

                    JS::Handle<JSObject*> aClassObject);

  void SetMemberList(nsXBLProtoImplMember* aMemberList)

  {

    delete mMembers;

    mMembers = aMemberList;

  }

  void SetFieldList(nsXBLProtoImplField* aFieldList)

  {

    delete mFields;

    mFields = aFieldList;

  }

  void Trace(const TraceCallbacks& aCallbacks, void *aClosure);

  void UnlinkJSObjects();

  nsXBLProtoImplField* FindField(const nsString& aFieldName) const;

  // Resolve all the fields for this implementation on the object |obj| False

  // return means a JS exception was set.

  bool ResolveAllFields(JSContext *cx, JS::Handle<JSObject*> obj) const;

  // Undefine all our fields from object |obj| (which should be a

  // JSObject for a bound element).

  void UndefineFields(JSContext* cx, JS::Handle<JSObject*> obj) const;

  bool CompiledMembers() const {

    return mPrecompiledMemberHolder != nullptr;

  }

  nsresult Read(nsIObjectInputStream* aStream,

                nsXBLPrototypeBinding* aBinding);

  nsresult Write(nsIObjectOutputStream* aStream,

                 nsXBLPrototypeBinding* aBinding);

protected:

  // used by Read to add each member

  nsXBLProtoImplMember* AddMember(nsXBLProtoImplMember* aMember,

                                  nsXBLProtoImplMember* aPreviousMember)

  {

    if (aPreviousMember)

      aPreviousMember->SetNext(aMember);

    else

      mMembers = aMember;

    return aMember;

  }

  void DestroyMembers();

public:

  nsString mClassName; // The name of the class.

protected:

  JSObject* mPrecompiledMemberHolder; // The class object for the binding. We'll use this to pre-compile properties

                          // and methods for the binding.

  nsXBLProtoImplMember* mMembers; // The members of an implementation are chained in this singly-linked list.

  nsXBLProtoImplField* mFields; // Our fields

public:

  nsXBLProtoImplAnonymousMethod* mConstructor; // Our class constructor.

  nsXBLProtoImplAnonymousMethod* mDestructor;  // Our class destructor.

};

void

NS_NewXBLProtoImpl(nsXBLPrototypeBinding* aBinding,

                   const char16_t* aClassName,

                   nsXBLProtoImpl** aResult);

#endif // nsXBLProtoImpl_h__