gecko-dev/layout/style/nsDOMCSSDeclaration.h

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#ifndef nsDOMCSSDeclaration_h___
#define nsDOMCSSSDeclaration_h___

#include "nsISupports.h"
#include "nsIDOMCSSStyleDeclaration.h"
#include "nsIDOMCSS2Properties.h"

#include "nsAgg.h"
#include "nsCOMPtr.h"

class nsCSSDeclaration;
class nsICSSParser;
class nsICSSLoader;
class nsIURI;

class nsDOMCSSDeclaration : public nsIDOMCSSStyleDeclaration
{
public:
  nsDOMCSSDeclaration();

  NS_DECL_ISUPPORTS

  NS_DECL_NSIDOMCSSSTYLEDECLARATION

  virtual void DropReference() = 0;
protected:
  // Always fills in the out parameter, even on failure, and if the out
  // parameter is null the nsresult will be the correct thing to
  // propagate.
  virtual nsresult GetCSSDeclaration(nsCSSDeclaration **aDecl,
                                     PRBool aAllocate) = 0;
  virtual nsresult GetParent(nsISupports **aParent) = 0;
  virtual nsresult DeclarationChanged() = 0;
  
  // This will only fail if it can't get a parser.  This means it can
  // return NS_OK without aURI or aCSSLoader being initialized.
  virtual nsresult GetCSSParsingEnvironment(nsIURI** aBaseURI,
                                            nsICSSLoader** aCSSLoader,
                                            nsICSSParser** aCSSParser) = 0;

  nsresult ParsePropertyValue(const nsAString& aPropName,
                              const nsAString& aPropValue);
  nsresult ParseDeclaration(const nsAString& aDecl,
                            PRBool aParseOnlyOneDecl, PRBool aClearOldDecl);
  
protected:
  virtual ~nsDOMCSSDeclaration();

private:
  nsCOMPtr<nsISupports> mInner; // CSS2Properties
};


class CSS2PropertiesTearoff : public nsIDOMNSCSS2Properties
{
public:
  NS_DECL_AGGREGATED

  NS_DECL_NSIDOMCSS2PROPERTIES
  NS_DECL_NSIDOMNSCSS2PROPERTIES

  CSS2PropertiesTearoff(nsISupports *aOuter);
  virtual ~CSS2PropertiesTearoff();
};


#endif // nsDOMCSSDeclaration_h___