gecko-dev/dom/flex/FlexLine.h

/* -*- 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 mozilla_dom_FlexLine_h
#define mozilla_dom_FlexLine_h

#include "mozilla/dom/FlexBinding.h"
#include "nsISupports.h"
#include "nsWrapperCache.h"

struct ComputedFlexLineInfo;

namespace mozilla {
namespace dom {

class Flex;
class FlexItem;

class FlexLine : public nsISupports
               , public nsWrapperCache
{
public:
  explicit FlexLine(Flex* aParent,
                    const ComputedFlexLineInfo* aLine);

protected:
  virtual ~FlexLine() = default;

public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(FlexLine)

  virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
  Flex* GetParentObject()
  {
    return mParent;
  }

  FlexLineGrowthState GrowthState() const;
  double CrossStart() const;
  double CrossSize() const;
  double FirstBaselineOffset() const;
  double LastBaselineOffset() const;

  void GetItems(nsTArray<RefPtr<FlexItem>>& aResult);

protected:
  RefPtr<Flex> mParent;

  FlexLineGrowthState mGrowthState;
  double mCrossStart;
  double mCrossSize;
  double mFirstBaselineOffset;
  double mLastBaselineOffset;

  nsTArray<RefPtr<FlexItem>> mItems;
};

} // namespace dom
} // namespace mozilla

#endif /* mozilla_dom_FlexLine_h */