layout/base/nsPresState.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /*
   7  * a piece of state that is stored in session history when the document
   8  * is not
   9  */
  10
  11 #ifndef nsPresState_h_
  12 #define nsPresState_h_
  13
  14 #include "nsPoint.h"
  15 #include "gfxPoint.h"
  16 #include "nsAutoPtr.h"
  17
  18 class nsPresState
  19 {
  20 public:
  21   nsPresState()
  22     : mContentData(nullptr)
  23     , mScrollState(0, 0)
  24     , mResolution(1.0, 1.0)
  25     , mDisabledSet(false)
  26     , mDisabled(false)
  27   {}
  28
  29   void SetScrollState(const nsPoint& aState)
  30   {
  31     mScrollState = aState;
  32   }
  33
  34   nsPoint GetScrollState() const
  35   {
  36     return mScrollState;
  37   }
  38
  39   void SetResolution(const gfxSize& aSize)
  40   {
  41     mResolution = aSize;
  42   }
  43
  44   gfxSize GetResolution() const
  45   {
  46     return mResolution;
  47   }
  48
  49   void ClearNonScrollState()
  50   {
  51     mContentData = nullptr;
  52     mDisabledSet = false;
  53   }
  54
  55   bool GetDisabled() const
  56   {
  57     return mDisabled;
  58   }
  59
  60   void SetDisabled(bool aDisabled)
  61   {
  62     mDisabled = aDisabled;
  63     mDisabledSet = true;
  64   }
  65
  66   bool IsDisabledSet() const
  67   {
  68     return mDisabledSet;
  69   }
  70
  71   nsISupports* GetStateProperty() const
  72   {
  73     return mContentData;
  74   }
  75
  76   void SetStateProperty(nsISupports *aProperty)
  77   {
  78     mContentData = aProperty;
  79   }
  80
  81 // MEMBER VARIABLES
  82 protected:
  83   nsCOMPtr<nsISupports> mContentData;
  84   nsPoint mScrollState;
  85   gfxSize mResolution;
  86   bool mDisabledSet;
  87   bool mDisabled;
  88 };
  89
  90 #endif /* nsPresState_h_ */