dom/xul/XULResizerElement.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_XULResizerElement_h
   8 #define mozilla_dom_XULResizerElement_h
   9
  10 #include "nsXULElement.h"
  11 #include "Units.h"
  12
  13 namespace mozilla::dom {
  14
  15 nsXULElement* NS_NewXULResizerElement(
  16     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  17
  18 class XULResizerElement final : public nsXULElement {
  19  public:
  20   explicit XULResizerElement(already_AddRefed<dom::NodeInfo>&& aNodeInfo)
  21       : nsXULElement(std::move(aNodeInfo)) {}
  22
  23   MOZ_CAN_RUN_SCRIPT
  24   nsresult PostHandleEvent(EventChainPostVisitor&) override;
  25
  26  private:
  27   virtual ~XULResizerElement() = default;
  28   JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
  29
  30   MOZ_CAN_RUN_SCRIPT
  31   void PostHandleEventInternal(EventChainPostVisitor&);
  32
  33   struct Direction {
  34     int8_t mHorizontal;
  35     int8_t mVertical;
  36   };
  37   Direction GetDirection();
  38
  39   nsIContent* GetContentToResize() const;
  40   // The current size of the content to resize (if available).
  41   Maybe<nsSize> GetCurrentSize() const;
  42
  43   struct SizeInfo {
  44     nsCString width, height;
  45   };
  46   static void SizeInfoDtorFunc(void* aObject, nsAtom* aPropertyName,
  47                                void* aPropertyValue, void* aData);
  48   static void ResizeContent(nsIContent* aContent, const Direction& aDirection,
  49                             const SizeInfo& aSizeInfo,
  50                             SizeInfo* aOriginalSizeInfo);
  51   static void MaybePersistOriginalSize(nsIContent* aContent,
  52                                        const SizeInfo& aSizeInfo);
  53   static void RestoreOriginalSize(nsIContent* aContent);
  54
  55   nsSize mMouseDownSize;
  56   LayoutDeviceIntPoint mMouseDownPoint;
  57   bool mTrackingMouseMove = false;
  58 };
  59
  60 }  // namespace mozilla::dom
  61
  62 #endif  // XULResizerElement_h