layout/xul/SimpleXULLeafFrame.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 // A simple frame class for XUL frames that are leafs on the tree but need
   8 // background / border painting, and for some reason or another need special
   9 // code (like event handling code) which we haven't ported to the DOM.
  10 //
  11 // This should generally not be used for new frame classes.
  12
  13 #ifndef mozilla_SimpleXULLeafFrame_h
  14 #define mozilla_SimpleXULLeafFrame_h
  15
  16 #include "nsLeafFrame.h"
  17
  18 namespace mozilla {
  19
  20 // Shared class for thumb and scrollbar buttons.
  21 class SimpleXULLeafFrame : public nsLeafFrame {
  22  public:
  23   NS_DECL_FRAMEARENA_HELPERS(SimpleXULLeafFrame)
  24
  25   // TODO: Look at appearance instead maybe?
  26   nscoord GetIntrinsicISize() override { return 0; }
  27   nscoord GetIntrinsicBSize() override { return 0; }
  28
  29   void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
  30               const ReflowInput& aReflowInput,
  31               nsReflowStatus& aStatus) override;
  32   explicit SimpleXULLeafFrame(ComputedStyle* aStyle,
  33                               nsPresContext* aPresContext, ClassID aClassID)
  34       : nsLeafFrame(aStyle, aPresContext, aClassID) {}
  35
  36   explicit SimpleXULLeafFrame(ComputedStyle* aStyle,
  37                               nsPresContext* aPresContext)
  38       : SimpleXULLeafFrame(aStyle, aPresContext, kClassID) {}
  39
  40   friend nsIFrame* NS_NewSimpleXULLeafFrame(mozilla::PresShell* aPresShell,
  41                                             ComputedStyle* aStyle);
  42 };
  43
  44 }  // namespace mozilla
  45
  46 #endif