XULResizerElement.h

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/* -*- 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_XULResizerElement_h

#define mozilla_dom_XULResizerElement_h

#include "nsXULElement.h"

#include "Units.h"

namespace mozilla::dom {

nsXULElement* NS_NewXULResizerElement(

    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);

class XULResizerElement final : public nsXULElement {

 public:

  explicit XULResizerElement(already_AddRefed<dom::NodeInfo>&& aNodeInfo)

      : nsXULElement(std::move(aNodeInfo)) {}

  MOZ_CAN_RUN_SCRIPT

  nsresult PostHandleEvent(EventChainPostVisitor&) override;

 private:

  virtual ~XULResizerElement() = default;

  JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;

  MOZ_CAN_RUN_SCRIPT

  void PostHandleEventInternal(EventChainPostVisitor&);

  struct Direction {

    int8_t mHorizontal;

    int8_t mVertical;

};

  Direction GetDirection();

  nsIContent* GetContentToResize() const;

  // The current size of the content to resize (if available).

  Maybe<nsSize> GetCurrentSize() const;

  struct SizeInfo {

    nsCString width, height;

};

  static void SizeInfoDtorFunc(void* aObject, nsAtom* aPropertyName,

                               void* aPropertyValue, void* aData);

  static void ResizeContent(nsIContent* aContent, const Direction& aDirection,

                            const SizeInfo& aSizeInfo,

                            SizeInfo* aOriginalSizeInfo);

  static void MaybePersistOriginalSize(nsIContent* aContent,

                                       const SizeInfo& aSizeInfo);

  static void RestoreOriginalSize(nsIContent* aContent);

  nsSize mMouseDownSize;

  LayoutDeviceIntPoint mMouseDownPoint;

  bool mTrackingMouseMove = false;

};

}  // namespace mozilla::dom

#endif  // XULResizerElement_h