layout/xul/nsBoxLayout.h
author Henrik Skupin <mail@hskupin.info>
Fri, 30 Nov 2018 13:27:22 +0000
changeset 448968 cd370c35d88d82c719e7b3d70ae1da003c8cb7f6
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1511311 - [marionette] GeckoInstance classes should not overwrite already set custom preferences. r=automatedtester Custom preferences as passed into both classes via the constructor are getting set in the base GeckoInstance class. But both the DesktopInstance and FennecInstance classes could override those custom preferences if they have the same preference set as required preference. As such the custom preference doesn't have any effect. This patch allows both classes to override required prefs with a different value. Differential Revision: https://phabricator.services.mozilla.com/D13522

/* -*- 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 nsBoxLayout_h___
#define nsBoxLayout_h___

#include "nsISupports.h"
#include "nsCoord.h"
#include "nsFrameList.h"

class nsIFrame;
class nsBoxLayoutState;
struct nsSize;
struct nsMargin;

#define NS_BOX_LAYOUT_IID                            \
  {                                                  \
    0x09d522a7, 0x304c, 0x4137, {                    \
      0xaf, 0xc9, 0xe0, 0x80, 0x2e, 0x89, 0xb7, 0xe8 \
    }                                                \
  }

class nsIGridPart;

class nsBoxLayout : public nsISupports {
 protected:
  virtual ~nsBoxLayout() {}

 public:
  nsBoxLayout() {}

  NS_DECL_ISUPPORTS

  NS_DECLARE_STATIC_IID_ACCESSOR(NS_BOX_LAYOUT_IID)

  NS_IMETHOD XULLayout(nsIFrame* aBox, nsBoxLayoutState& aState);

  virtual nsSize GetXULPrefSize(nsIFrame* aBox,
                                nsBoxLayoutState& aBoxLayoutState);
  virtual nsSize GetXULMinSize(nsIFrame* aBox,
                               nsBoxLayoutState& aBoxLayoutState);
  virtual nsSize GetXULMaxSize(nsIFrame* aBox,
                               nsBoxLayoutState& aBoxLayoutState);
  virtual nscoord GetAscent(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState);
  virtual void ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,
                                nsIFrame* aPrevBox,
                                const nsFrameList::Slice& aNewChildren) {}
  virtual void ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,
                                const nsFrameList::Slice& aNewChildren) {}
  virtual void ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,
                               nsIFrame* aChildList) {}
  virtual void ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,
                           nsIFrame* aChildList) {}
  virtual void IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aState) {}

  virtual void AddBorderAndPadding(nsIFrame* aBox, nsSize& aSize);
  virtual void AddMargin(nsIFrame* aChild, nsSize& aSize);
  virtual void AddMargin(nsSize& aSize, const nsMargin& aMargin);

  virtual nsIGridPart* AsGridPart() { return nullptr; }

  static void AddLargestSize(nsSize& aSize, const nsSize& aToAdd);
  static void AddSmallestSize(nsSize& aSize, const nsSize& aToAdd);
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsBoxLayout, NS_BOX_LAYOUT_IID)

#endif