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/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef WebStorageArea_h
#define WebStorageArea_h
#include "WebCommon.h"
#include "WebString.h"
namespace WebKit {
class WebURL;
// In WebCore, there's one distinct StorageArea per origin per StorageNamespace. This
// class wraps a StorageArea. All the methods have obvious connections to the spec:
// http://dev.w3.org/html5/webstorage/
class WebStorageArea {
public:
virtual ~WebStorageArea() { }
// The number of key/value pairs in the storage area.
virtual unsigned length() = 0;
// Get a value for a specific key. Valid key indices are 0 through length() - 1.
// Indexes may change on any set/removeItem call. Will return null if the index
// provided is out of range.
virtual WebString key(unsigned index) = 0;
// Get the value that corresponds to a specific key. This returns null if there is
// no entry for that key.
virtual WebString getItem(const WebString& key) = 0;
// Set the value that corresponds to a specific key. QuotaException is set if we've
// the StorageArea would have exceeded its quota. The value is NOT set when there's
// an exception. url is the url that should be used if a storage event fires.
// FIXME: The following is a hack to keep Chromium compiling until the other half is landed. Remove soon.
virtual void setItem(const WebString& key, const WebString& newValue, const WebURL& url, bool& quotaException) // Deprecated.
{
WebString oldValue;
setItem(key, newValue, url, quotaException, oldValue);
}
virtual void setItem(const WebString& key, const WebString& newValue, const WebURL& url, bool& quotaException, WebString& oldValue)
{
setItem(key, newValue, url, quotaException);
}
// Remove the value associated with a particular key. url is the url that should be used
// if a storage event fires.
// FIXME: The following is a hack to keep Chromium compiling until the other half is landed. Remove soon.
virtual void removeItem(const WebString& key, const WebURL& url) // Deprecated.
{
WebString oldValue;
removeItem(key, url, oldValue);
}
virtual void removeItem(const WebString& key, const WebURL& url, WebString& oldValue)
{
removeItem(key, url);
}
// Clear all key/value pairs. url is the url that should be used if a storage event fires.
// FIXME: The following is a hack to keep Chromium compiling until the other half is landed. Remove soon.
virtual void clear(const WebURL& url) // Deprecated.
{
bool somethingCleared;
clear(url, somethingCleared);
}
virtual void clear(const WebURL& url, bool& somethingCleared)
{
clear(url);
}
};
} // namespace WebKit
#endif // WebStorageArea_h
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