Source/WebKitLegacy/mac/Storage/WebDatabaseQuotaManager.mm

/*
 * Copyright (C) 2007, 2010 Apple 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
 */

#import "WebDatabaseQuotaManager.h"

#import "WebSecurityOriginInternal.h"
#import <WebCore/DatabaseTracker.h>
#import <WebCore/SecurityOriginData.h>

using namespace WebCore;

@implementation WebDatabaseQuotaManager

- (id)initWithOrigin:(WebSecurityOrigin *)origin
{
    if (!origin)
        return nil;

    self = [super init];
    if (!self)
        return nil;

    _origin = origin;
    return self;
}

- (WebSecurityOrigin *)origin
{
    return _origin;
}

- (unsigned long long)usage
{
    return DatabaseTracker::singleton().usage([_origin _core]->data());
}

- (unsigned long long)quota
{
    return DatabaseTracker::singleton().quota([_origin _core]->data());
}

// If the quota is set to a value lower than the current usage, that quota will
// "stick" but no data will be purged to meet the new quota. This will simply
// prevent new data from being added to databases in that origin.
- (void)setQuota:(unsigned long long)quota
{
    DatabaseTracker::singleton().setQuota([_origin _core]->data(), quota);
}

@end