pjs/layout/style/nsCSSRule.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1999 Netscape Communications Corporation.  All Rights
 * Reserved.
 */
#include "nsCSSRule.h"

#include "nsCRT.h"
#include "nsIArena.h"
#include "nsICSSStyleSheet.h"


//#define DEBUG_REFS

void* nsCSSRule::operator new(size_t size)
{
  nsCSSRule* rv = (nsCSSRule*) ::operator new(size);
#ifdef NS_DEBUG
  if (nsnull != rv) {
    nsCRT::memset(rv, 0xEE, size);
  }
#endif
  rv->mInHeap = 1;
  return (void*) rv;
}

void* nsCSSRule::operator new(size_t size, nsIArena* aArena)
{
  nsCSSRule* rv = (nsCSSRule*) aArena->Alloc(PRInt32(size));
#ifdef NS_DEBUG
  if (nsnull != rv) {
    nsCRT::memset(rv, 0xEE, size);
  }
#endif
  rv->mInHeap = 0;
  return (void*) rv;
}

void nsCSSRule::operator delete(void* ptr)
{
  nsCSSRule* rule = (nsCSSRule*) ptr;
  if (nsnull != rule) {
    if (rule->mInHeap) {
      ::operator delete(ptr);
    }
  }
}


#ifdef DEBUG_REFS
static PRInt32 gInstanceCount;
static const PRInt32 kInstrument = 1075;
#endif


nsCSSRule::nsCSSRule(void)
  : mSheet(nsnull)
{
  NS_INIT_REFCNT();

#ifdef DEBUG_REFS
  mInstance = gInstanceCount++;
  fprintf(stdout, "%d of %d + CSSRule\n", mInstance, gInstanceCount);
#endif
}

nsCSSRule::nsCSSRule(const nsCSSRule& aCopy)
  : mSheet(aCopy.mSheet)
{
  NS_INIT_REFCNT();

#ifdef DEBUG_REFS
  mInstance = gInstanceCount++;
  fprintf(stdout, "%d of %d + CSSRule\n", mInstance, gInstanceCount);
#endif
}


nsCSSRule::~nsCSSRule(void)
{
#ifdef DEBUG_REFS
  --gInstanceCount;
  fprintf(stdout, "%d of %d - CSSStyleRule\n", mInstance, gInstanceCount);
#endif
}

#ifdef DEBUG_REFS
nsrefcnt 
nsCSSRule::AddRef(void)                                
{                                    
  if (mInstance == kInstrument) {
    fprintf(stdout, "%d AddRef CSSRule\n", mRefCnt + 1);
  }
  return ++mRefCnt;                                          
}

nsrefcnt 
nsCSSRule::Release(void)                         
{                                                      
  if (mInstance == kInstrument) {
    fprintf(stdout, "%d Release CSSRule\n", mRefCnt - 1);
  }
  if (--mRefCnt == 0) {                                
    NS_DELETEXPCOM(this);
    return 0;                                          
  }                                                    
  return mRefCnt;                                      
}
#else
NS_IMPL_ADDREF(nsCSSRule)
NS_IMPL_RELEASE(nsCSSRule)
#endif

NS_IMETHODIMP
nsCSSRule::GetStyleSheet(nsIStyleSheet*& aSheet) const
{
  NS_IF_ADDREF(mSheet);
  aSheet = mSheet;
  return NS_OK;
}

NS_IMETHODIMP
nsCSSRule::SetStyleSheet(nsICSSStyleSheet* aSheet)
{
  // We don't reference count this up reference. The style sheet
  // will tell us when it's going away or when we're detached from
  // it.
  mSheet = aSheet;
  return NS_OK;
}

NS_IMETHODIMP
nsCSSRule::GetStrength(PRInt32& aStrength) const
{
  aStrength = 0;
  return NS_OK;
}

NS_IMETHODIMP
nsCSSRule::MapFontStyleInto(nsIStyleContext* aContext, nsIPresContext* aPresContext)
{
  return NS_OK;
}

NS_IMETHODIMP
nsCSSRule::MapStyleInto(nsIStyleContext* aContext, nsIPresContext* aPresContext)
{
  return NS_OK;
}