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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is 
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 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
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 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef nsICSSStyleSheet_h___
#define nsICSSStyleSheet_h___

#include "nsIStyleSheet.h"
#include "nsString.h"

class nsICSSRule;
class nsIDOMNode;
class nsINameSpace;
class nsICSSStyleRuleProcessor;
class nsIMediaList;
class nsICSSGroupRule;

// IID for the nsICSSStyleSheet interface {8f83b0f0-b21a-11d1-8031-006008159b5a}
#define NS_ICSS_STYLE_SHEET_IID     \
{0x8f83b0f0, 0xb21a, 0x11d1, {0x80, 0x31, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}}

class nsICSSStyleSheet : public nsIStyleSheet {
public:
  static const nsIID& GetIID() { static nsIID iid = NS_ICSS_STYLE_SHEET_IID; return iid; }

  NS_IMETHOD  ContainsStyleSheet(nsIURI* aURL, PRBool& aContains, nsIStyleSheet** aTheChild=nsnull) = 0;

  NS_IMETHOD  AppendStyleSheet(nsICSSStyleSheet* aSheet) = 0;
  NS_IMETHOD  InsertStyleSheetAt(nsICSSStyleSheet* aSheet, PRInt32 aIndex) = 0;

  NS_IMETHOD  PrependStyleRule(nsICSSRule* aRule) = 0;
  NS_IMETHOD  AppendStyleRule(nsICSSRule* aRule) = 0;

  NS_IMETHOD  StyleRuleCount(PRInt32& aCount) const = 0;
  NS_IMETHOD  GetStyleRuleAt(PRInt32 aIndex, nsICSSRule*& aRule) const = 0;

  NS_IMETHOD  DeleteRuleFromGroup(nsICSSGroupRule* aGroup, PRUint32 aIndex) = 0;
  NS_IMETHOD  InsertRuleIntoGroup(const nsAString & aRule, nsICSSGroupRule* aGroup, PRUint32 aIndex, PRUint32* _retval) = 0;

  NS_IMETHOD  StyleSheetCount(PRInt32& aCount) const = 0;
  NS_IMETHOD  GetStyleSheetAt(PRInt32 aIndex, nsICSSStyleSheet*& aSheet) const = 0;

  NS_IMETHOD  Init(nsIURI* aURL) = 0;
  NS_IMETHOD  SetTitle(const nsString& aTitle) = 0;
  NS_IMETHOD  AppendMedium(nsIAtom* aMedium) = 0;
  NS_IMETHOD  ClearMedia(void) = 0;
  NS_IMETHOD  SetOwningNode(nsIDOMNode* aOwningNode) = 0;

  // get head of namespace chain for sheet
  NS_IMETHOD  GetNameSpace(nsINameSpace*& aNameSpace) const = 0;
  // set default namespace for sheet (may be overridden by @namespace)
  NS_IMETHOD  SetDefaultNameSpaceID(PRInt32 aDefaultNameSpaceID) = 0;

  NS_IMETHOD  Clone(nsICSSStyleSheet*& aClone) const = 0;

  NS_IMETHOD  IsModified(PRBool* aModified) const = 0; // returns the mDirty status of the sheet
  NS_IMETHOD  SetModified(PRBool aModified) = 0;

  NS_IMETHOD  DropRuleProcessorReference(nsICSSStyleRuleProcessor* aProcessor) = 0;
};

// XXX for backwards compatibility and convenience
extern NS_EXPORT nsresult
  NS_NewCSSStyleSheet(nsICSSStyleSheet** aInstancePtrResult, nsIURI* aURL);

extern NS_EXPORT nsresult
  NS_NewCSSStyleSheet(nsICSSStyleSheet** aInstancePtrResult);

#endif /* nsICSSStyleSheet_h___ */