pjs/docshell/base/IHistory.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=4 sw=4 et tw=80:
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the mozilla.org code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Shawn Wilsher <me@shawnwilsher.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef mozilla_IHistory_h_
#define mozilla_IHistory_h_
#include "nsISupports.h"
class nsIURI;
namespace mozilla {
namespace dom {
class Link;
}
#define IHISTORY_IID \
{0xaf27265d, 0x5672, 0x4d23, {0xa0, 0x75, 0x34, 0x8e, 0xb9, 0x73, 0x5a, 0x9a}}
class IHistory : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(IHISTORY_IID)
/**
* Registers the Link for notifications about the visited-ness of aURI.
* Consumers should assume that the URI is unvisited after calling this, and
* they will be notified if that state (unvisited) changes by having
* SetLinkState called on themselves. This function is guaranteed to run to
* completion before aLink is notified. After the node is notified, it will
* be unregistered.
*
* @note SetLinkState must not call RegisterVisitedCallback or
* UnregisterVisitedCallback.
*
* @pre aURI must not be null.
* @pre aLink must not be null.
*
* @param aURI
* The URI to check.
* @param aLink
* The link to update whenever the history status changes. The
* implementation will only hold onto a raw pointer, so if this
* object should be destroyed, be sure to call
* UnregisterVistedCallback first.
*/
NS_IMETHOD RegisterVisitedCallback(nsIURI *aURI, dom::Link *aLink) = 0;
/**
* Unregisters a previously registered Link object. This must be called
* before destroying the registered object.
*
* @pre aURI must not be null.
* @pre aLink must not be null.
*
* @param aURI
* The URI that aLink was registered for.
* @param aLink
* The link object to unregister for aURI.
*/
NS_IMETHOD UnregisterVisitedCallback(nsIURI *aURI, dom::Link *aLink) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(IHistory, IHISTORY_IID)
#define NS_DECL_IHISTORY \
NS_IMETHOD RegisterVisitedCallback(nsIURI *aURI, \
mozilla::dom::Link *aContent); \
NS_IMETHOD UnregisterVisitedCallback(nsIURI *aURI, \
mozilla::dom::Link *aContent);
} // namespace mozilla
#endif // mozilla_IHistory_h_