/*

 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "IconDatabase.h"

#if !ENABLE(ICONDATABASE)

#include "PlatformString.h"

#include "SharedBuffer.h"

#include <wtf/StdLibExtras.h>

namespace WebCore {

static IconDatabase* sharedIconDatabase = 0;

// This version number is in the DB and marks the current generation of the schema

// Theoretically once the switch is flipped this should never change

// Currently, an out-of-date schema causes the DB to be wiped and reset.  This isn't 

// so bad during development but in the future, we would need to write a conversion

// function to advance older released schemas to "current"

const int currentDatabaseVersion = 5;

// Icons expire once a day

const int iconExpirationTime = 60*60*24; 

// Absent icons are rechecked once a week

const int missingIconExpirationTime = 60*60*24*7; 

const int updateTimerDelay = 5; 

String IconDatabase::defaultDatabaseFilename()

{

    DEFINE_STATIC_LOCAL(String, defaultDatabaseFilename, ("Icons.db"));

    return defaultDatabaseFilename.threadsafeCopy();

}

IconDatabase* iconDatabase()

{

    if (!sharedIconDatabase)

        sharedIconDatabase = new IconDatabase;

    return sharedIconDatabase;

}

IconDatabase::IconDatabase()

{

}

bool IconDatabase::open(const String& /*databasePath*/)

{

    return false;

}

bool IconDatabase::isOpen() const

{

    return false;

}

void IconDatabase::close()

{

}

String IconDatabase::databasePath() const

{

    return String();

}

void IconDatabase::removeAllIcons()

{

}

void IconDatabase::setPrivateBrowsingEnabled(bool /*flag*/)

{

}

bool IconDatabase::isPrivateBrowsingEnabled() const

{

    return false;

}

void IconDatabase::readIconForPageURLFromDisk(const String&)

{

}

Image* IconDatabase::iconForPageURL(const String& /*pageURL*/, const IntSize& size)

{

    return defaultIcon(size);

}

IconLoadDecision IconDatabase::loadDecisionForIconURL(const String&, DocumentLoader*)

{

    return IconLoadNo;

}

bool IconDatabase::iconDataKnownForIconURL(const String&)

{

    return false;

}

String IconDatabase::iconURLForPageURL(const String& /*pageURL*/)

{

    return String();

}

Image* IconDatabase::defaultIcon(const IntSize& /*size*/)

{

    return 0;

}

void IconDatabase::retainIconForPageURL(const String& /*pageURL*/)

{

}

void IconDatabase::releaseIconForPageURL(const String& /*pageURL*/)

{

}

void IconDatabase::setIconDataForIconURL(PassRefPtr<SharedBuffer> /*data*/, const String& /*iconURL*/)

{

}

void IconDatabase::setIconURLForPageURL(const String& /*iconURL*/, const String& /*pageURL*/)

{

}

void IconDatabase::setEnabled(bool /*enabled*/)

{

}

bool IconDatabase::isEnabled() const

{

    return false;

}

IconDatabase::~IconDatabase()

{

    ASSERT_NOT_REACHED();

}

void IconDatabase::checkIntegrityBeforeOpening()

{

}

void IconDatabase::delayDatabaseCleanup()

{

}

void IconDatabase::allowDatabaseCleanup()

{

}

size_t IconDatabase::pageURLMappingCount()

{

    return 0;

}

size_t IconDatabase::retainedPageURLCount()

{

    return 0;

}

size_t IconDatabase::iconRecordCount()

{

    return 0;

}

size_t IconDatabase::iconRecordCountWithData()

{

    return 0;

}

void IconDatabase::setClient(IconDatabaseClient*)

{

}

// ************************

// *** Sync Thread Only ***

// ************************

void IconDatabase::importIconURLForPageURL(const String&, const String&)

{

}

void IconDatabase::importIconDataForIconURL(PassRefPtr<SharedBuffer>, const String&)

{

}

bool IconDatabase::shouldStopThreadActivity() const

{

    return true;

}

} // namespace WebCore

#endif // !ENABLE(ICONDATABASE)