layout/xul/nsDeckFrame.h
author Nika Layzell <nika@thelayzells.com>
Tue, 25 Sep 2018 17:34:53 +0200
changeset 507828 5e6dae0c1e5a4939ccd406f14607f7fafffd45a7
parent 465602 0016368787a44bdf5deb4c9b73f3c0b59d2bc27a
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1448426 - Wrap windows.h to avoid problematic define statements, r=froydnj,glandium By default, windows.h exposes a large number of problematic define statements which are UpperCamelCase, such as a define from `CreateWindow` to `CreateWindow{A,W}`. As many of these names are generic (e.g. CreateFile, CreateWindow), they can mess up Gecko code that may legitimately have its own methods with the same names. The header also defines some traditional SCREAMING_SNAKE_CASE defines which can mess up our code by conflicting with local values. This patch adds a simple code generator which generates wrappers for these defines, and uses them to wrap the windows.h wrapper using the `stl_wrappers` mechanism, allowing us to use windows.h in more places. Differential Revision: https://phabricator.services.mozilla.com/D10932

/* -*- 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
  A frame that can have multiple children. Only one child may be displayed at one time. So the
  can be flipped though like a deck of cards.

**/

#ifndef nsDeckFrame_h___
#define nsDeckFrame_h___

#include "mozilla/Attributes.h"
#include "nsBoxFrame.h"

class nsDeckFrame final : public nsBoxFrame
{
public:
  NS_DECL_QUERYFRAME
  NS_DECL_FRAMEARENA_HELPERS(nsDeckFrame)

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

  virtual nsresult AttributeChanged(int32_t         aNameSpaceID,
                                    nsAtom*        aAttribute,
                                    int32_t         aModType) override;

  NS_IMETHOD DoXULLayout(nsBoxLayoutState& aState) override;

  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                const nsDisplayListSet& aLists) override;

  virtual void RemoveFrame(ChildListID aListID,
                           nsIFrame* aOldFrame) override;

  virtual void BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
                                           const nsDisplayListSet& aLists) override;

  virtual void Init(nsIContent*       aContent,
                    nsContainerFrame* aParent,
                    nsIFrame*         aPrevInFlow) override;

#ifdef DEBUG_FRAME_DUMP
  virtual nsresult GetFrameName(nsAString& aResult) const override
  {
      return MakeFrameName(NS_LITERAL_STRING("Deck"), aResult);
  }
#endif

  explicit nsDeckFrame(ComputedStyle* aStyle);

  nsIFrame* GetSelectedBox();

protected:

  void IndexChanged();
  int32_t GetSelectedIndex();
  void HideBox(nsIFrame* aBox);

private:

  int32_t mIndex;

}; // class nsDeckFrame

#endif