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 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * 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 nsIOService_h__
#define nsIOService_h__

#include "necko-config.h"

#include "nsString.h"
#include "nsIIOService.h"
#include "nsVoidArray.h"
#include "nsISocketTransportService.h" 
#include "nsIDNSService.h" 
#include "nsIProtocolProxyService.h"
#include "nsCOMPtr.h"
#include "nsURLHelper.h"
#include "nsWeakPtr.h"
#include "nsIEventQueueService.h"
#include "nsIURLParser.h"
#include "nsSupportsArray.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"

#define NS_N(x) (sizeof(x)/sizeof(*x))

#ifdef NECKO_SMALL_BUFFERS
#define NS_NECKO_BUFFER_CACHE_COUNT (10)  // Max holdings: 10 * 2k = 20k
#else
#define NS_NECKO_BUFFER_CACHE_COUNT (24)  // Max holdings: 24 * 4k = 96k
#endif
#define NS_NECKO_15_MINS (15 * 60)

static const char *gScheme[] = {"chrome", "file", "http", "jar", "resource"};

class nsIPrefBranch;
class nsIPrefBranchInternal;

class nsIOService : public nsIIOService
                  , public nsIObserver
                  , public nsSupportsWeakReference
{
public:
    NS_DECL_ISUPPORTS

    // nsIIOService methods:
    NS_DECL_NSIIOSERVICE

    // nsIObserver methods:
    NS_DECL_NSIOBSERVER

    // nsIOService methods:
    nsIOService();
    virtual ~nsIOService();

    static NS_METHOD
    Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);

    nsresult Init();
    nsresult NewURI(const char* aSpec, nsIURI* aBaseURI,
                    nsIURI* *result, nsIProtocolHandler* *hdlrResult);

protected:
    nsresult GetCachedProtocolHandler(const char *scheme,
                                       nsIProtocolHandler* *hdlrResult,
                                       PRUint32 start=0,
                                       PRUint32 end=0);
    nsresult CacheProtocolHandler(const char *scheme,
                                   nsIProtocolHandler* hdlr);

    // Prefs wrangling
    void PrefsChanged(nsIPrefBranch *prefs, const char *pref = nsnull);
    void GetPrefBranch(nsIPrefBranchInternal **);
    void ParsePortList(nsIPrefBranch *prefBranch, const char *pref, PRBool remove);

protected:
    PRPackedBool                        mOffline;
    PRPackedBool                        mOfflineForProfileChange;
    nsCOMPtr<nsISocketTransportService> mSocketTransportService;
    nsCOMPtr<nsIDNSService>             mDNSService;
    nsCOMPtr<nsIProtocolProxyService>   mProxyService;
    nsCOMPtr<nsIEventQueueService>      mEventQueueService;
    
    // Cached protocol handlers
    nsWeakPtr                           mWeakHandler[NS_N(gScheme)];

    nsVoidArray                         mRestrictedPortList;

public:
    // Necko buffer cache. Used for all default buffer sizes that necko
    // allocates.
    static nsIMemory *gBufferCache;
};

#endif // nsIOService_h__