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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 mozilla.org code.
*
* 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.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* 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 ***** */
#include "nsILayoutHistoryState.h"
#include "nsWeakReference.h"
#include "nsClassHashtable.h"
#include "nsPresState.h"
class nsLayoutHistoryState : public nsILayoutHistoryState,
public nsSupportsWeakReference
{
public:
NS_HIDDEN_(nsresult) Init();
NS_DECL_ISUPPORTS
// nsILayoutHistoryState
NS_IMETHOD AddState(const nsCString& aKey, nsPresState* aState);
NS_IMETHOD GetState(const nsCString& aKey, nsPresState** aState);
NS_IMETHOD RemoveState(const nsCString& aKey);
private:
~nsLayoutHistoryState() {}
nsClassHashtable<nsCStringHashKey,nsPresState> mStates;
};
nsresult
NS_NewLayoutHistoryState(nsILayoutHistoryState** aState)
{
nsLayoutHistoryState *state;
*aState = nsnull;
state = new nsLayoutHistoryState();
if (!state)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(state);
nsresult rv = state->Init();
if (NS_SUCCEEDED(rv))
*aState = state;
else
NS_RELEASE(state);
return rv;
}
NS_IMPL_ISUPPORTS2(nsLayoutHistoryState,
nsILayoutHistoryState,
nsISupportsWeakReference)
nsresult
nsLayoutHistoryState::Init()
{
return mStates.Init() ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLayoutHistoryState::AddState(const nsCString& aStateKey, nsPresState* aState)
{
return mStates.Put(aStateKey, aState) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
nsLayoutHistoryState::GetState(const nsCString& aKey, nsPresState** aState)
{
mStates.Get(aKey, aState);
return NS_OK;
}
NS_IMETHODIMP
nsLayoutHistoryState::RemoveState(const nsCString& aKey)
{
mStates.Remove(aKey);
return NS_OK;
}
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