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#ifndef nsIContentUtils_h__
#define nsIContentUtils_h__

#include "nsIDocumentLoaderFactory.h"
#include "nsCOMPtr.h"
#include "nsAString.h"
#include "nsMargin.h"

class nsIInterfaceRequestor;

// {3682DD99-8560-44f4-9B8F-CCCE9D7B96FB}
#define NS_ICONTENTUTILS_IID \
{ 0x3682dd99, 0x8560, 0x44f4, \
  { 0x9b, 0x8f, 0xcc, 0xce, 0x9d, 0x7b, 0x96, 0xfb } }

class nsIContentUtils : public nsISupports
{
public:
    NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONTENTUTILS_IID)
    NS_DECL_ISUPPORTS

    virtual PRBool IsSafeToRunScript();
    virtual PRBool ParseIntMarginValue(const nsAString& aString, nsIntMargin& result);

    enum ContentViewerType
    {
        TYPE_UNSUPPORTED,
        TYPE_CONTENT,
        TYPE_PLUGIN,
        TYPE_UNKNOWN
    };

    virtual already_AddRefed<nsIDocumentLoaderFactory>
    FindInternalContentViewer(const char* aType,
                              ContentViewerType* aLoaderType = NULL);
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIContentUtils, NS_ICONTENTUTILS_IID)

// {c7193287-3e3d-467f-b6da-47b914eb4c83}
#define NS_ICONTENTUTILS2_IID \
{ 0xc7193287, 0x3e3d, 0x467f, \
{ 0xb6, 0xda, 0x47, 0xb9, 0x14, 0xeb, 0x4c, 0x83 } }

class nsIContentUtils2 : public nsISupports
{
public:
  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONTENTUTILS2_IID)
  NS_DECL_ISUPPORTS

  virtual nsIInterfaceRequestor* GetSameOriginChecker();
  // Returns NS_OK for same origin, error (NS_ERROR_DOM_BAD_URI) if not.
  virtual nsresult CheckSameOrigin(nsIChannel *aOldChannel, nsIChannel *aNewChannel);
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIContentUtils2, NS_ICONTENTUTILS2_IID)

#endif /* nsIContentUtils_h__ */
