/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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#ifndef nsIStyleRule_h___
#define nsIStyleRule_h___

#include <stdio.h>

#include "nslayout.h"
#include "nsISupports.h"

class nsISizeOfHandler;

class nsIStyleSheet;
class nsIPresContext;
class nsIContent;
struct nsRuleData;

// IID for the nsIStyleRule interface {40ae5c90-ad6a-11d1-8031-006008159b5a}
#define NS_ISTYLE_RULE_IID     \
{0x40ae5c90, 0xad6a, 0x11d1, {0x80, 0x31, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}}

class nsIStyleRule : public nsISupports {
public:
  static const nsIID& GetIID() { static nsIID iid = NS_ISTYLE_RULE_IID; return iid; }

  NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aSheet) const = 0;

  // Strength is an out-of-band weighting, useful for mapping CSS ! important
  NS_IMETHOD GetStrength(PRInt32& aStrength) const = 0;

  // The new mapping function.
  NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData)=0;

  NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const = 0;

  virtual void SizeOf(nsISizeOfHandler *aSizeOfHandler, PRUint32 &aSize) = 0;
};


#endif /* nsIStyleRule_h___ */