layout/xul/nsScrollbarButtonFrame.h
author Chris Manchester <cmanchester@mozilla.com>
Wed, 16 Jan 2019 22:46:38 +0000
changeset 514323 471d9fab61b34671f974dfa349e7972c200faa2b
parent 508163 6f3709b3878117466168c40affa7bca0b60cf75b
child 518473 525e804dc7e63855e026be9557af15340d71455a
permissions -rw-r--r--
Bug 1507631 - Remove mentions of MOZ_SIGN_CMD from the build system. r=nalexander Differential Revision: https://phabricator.services.mozilla.com/D16754

/* -*- 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/. */

/**

  Eric D Vaughan
  This class lays out its children either vertically or horizontally

**/

#ifndef nsScrollbarButtonFrame_h___
#define nsScrollbarButtonFrame_h___

#include "mozilla/Attributes.h"
#include "nsButtonBoxFrame.h"
#include "nsITimer.h"
#include "nsRepeatService.h"

class nsScrollbarButtonFrame final : public nsButtonBoxFrame {
 public:
  NS_DECL_FRAMEARENA_HELPERS(nsScrollbarButtonFrame)

  explicit nsScrollbarButtonFrame(ComputedStyle* aStyle)
      : nsButtonBoxFrame(aStyle, kClassID), mCursorOnThis(false) {}

  // Overrides
  virtual void DestroyFrom(nsIFrame* aDestructRoot,
                           PostDestroyData& aPostDestroyData) override;

  friend nsIFrame* NS_NewScrollbarButtonFrame(nsIPresShell* aPresShell,
                                              ComputedStyle* aStyle);

  virtual nsresult HandleEvent(nsPresContext* aPresContext,
                               mozilla::WidgetGUIEvent* aEvent,
                               nsEventStatus* aEventStatus) override;

  static nsresult GetChildWithTag(nsAtom* atom, nsIFrame* start,
                                  nsIFrame*& result);
  static nsresult GetParentWithTag(nsAtom* atom, nsIFrame* start,
                                   nsIFrame*& result);

  bool HandleButtonPress(nsPresContext* aPresContext,
                         mozilla::WidgetGUIEvent* aEvent,
                         nsEventStatus* aEventStatus);

  NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
                                 mozilla::WidgetGUIEvent* aEvent,
                                 nsEventStatus* aEventStatus,
                                 bool aControlHeld) override {
    return NS_OK;
  }

  NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
                        mozilla::WidgetGUIEvent* aEvent,
                        nsEventStatus* aEventStatus) override {
    return NS_OK;
  }

  NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
                           mozilla::WidgetGUIEvent* aEvent,
                           nsEventStatus* aEventStatus) override;

 protected:
  void StartRepeat() {
    nsRepeatService::GetInstance()->Start(
        Notify, this, mContent->OwnerDoc(),
        NS_LITERAL_CSTRING("nsScrollbarButtonFrame"));
  }
  void StopRepeat() { nsRepeatService::GetInstance()->Stop(Notify, this); }
  void Notify();
  static void Notify(void* aData) {
    static_cast<nsScrollbarButtonFrame*>(aData)->Notify();
  }

  bool mCursorOnThis;
};

#endif