/* -*- 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/. */

/*
 * a piece of state that is stored in session history when the document
 * is not
 */

#ifndef nsPresState_h_
#define nsPresState_h_

#include "nsPoint.h"
#include "gfxPoint.h"
#include "nsAutoPtr.h"

class nsPresState {
 public:
  nsPresState()
      : mContentData(nullptr),
        mScrollState(0, 0),
        mAllowScrollOriginDowngrade(true),
        mResolution(1.0),
        mScaleToResolution(false),
        mDisabledSet(false),
        mDisabled(false),
        mDroppedDown(false) {}

  void SetScrollState(const nsPoint& aState) { mScrollState = aState; }

  nsPoint GetScrollPosition() const { return mScrollState; }

  void SetAllowScrollOriginDowngrade(bool aAllowScrollOriginDowngrade) {
    mAllowScrollOriginDowngrade = aAllowScrollOriginDowngrade;
  }

  bool GetAllowScrollOriginDowngrade() { return mAllowScrollOriginDowngrade; }

  void SetResolution(float aSize) { mResolution = aSize; }

  float GetResolution() const { return mResolution; }

  void SetScaleToResolution(bool aScaleToResolution) {
    mScaleToResolution = aScaleToResolution;
  }

  bool GetScaleToResolution() const { return mScaleToResolution; }

  void ClearNonScrollState() {
    mContentData = nullptr;
    mDisabledSet = false;
  }

  bool GetDisabled() const { return mDisabled; }

  void SetDisabled(bool aDisabled) {
    mDisabled = aDisabled;
    mDisabledSet = true;
  }

  bool IsDisabledSet() const { return mDisabledSet; }

  nsISupports* GetStateProperty() const { return mContentData; }

  void SetStateProperty(nsISupports* aProperty) { mContentData = aProperty; }

  void SetDroppedDown(bool aDroppedDown) { mDroppedDown = aDroppedDown; }

  bool GetDroppedDown() const { return mDroppedDown; }

  // MEMBER VARIABLES
 protected:
  nsCOMPtr<nsISupports> mContentData;
  nsPoint mScrollState;
  bool mAllowScrollOriginDowngrade;
  float mResolution;
  bool mScaleToResolution;
  bool mDisabledSet;
  bool mDisabled;
  bool mDroppedDown;
};

#endif /* nsPresState_h_ */