зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
3.5 KiB
C++
119 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* container for information saved in session history when the document
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* is not
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*/
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#include "nsILayoutHistoryState.h"
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#include "nsWeakReference.h"
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#include "nsClassHashtable.h"
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#include "nsPresState.h"
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class nsLayoutHistoryState : public nsILayoutHistoryState,
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public nsSupportsWeakReference
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{
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public:
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NS_HIDDEN_(nsresult) Init();
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NS_DECL_ISUPPORTS
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// nsILayoutHistoryState
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NS_IMETHOD AddState(const nsCString& aKey, nsPresState* aState);
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NS_IMETHOD GetState(const nsCString& aKey, nsPresState** aState);
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NS_IMETHOD RemoveState(const nsCString& aKey);
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private:
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~nsLayoutHistoryState() {}
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nsClassHashtable<nsCStringHashKey,nsPresState> mStates;
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};
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nsresult
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NS_NewLayoutHistoryState(nsILayoutHistoryState** aState)
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{
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nsLayoutHistoryState *state;
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*aState = nsnull;
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state = new nsLayoutHistoryState();
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if (!state)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(state);
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nsresult rv = state->Init();
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if (NS_SUCCEEDED(rv))
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*aState = state;
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else
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NS_RELEASE(state);
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return rv;
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}
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NS_IMPL_ISUPPORTS2(nsLayoutHistoryState,
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nsILayoutHistoryState,
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nsISupportsWeakReference)
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nsresult
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nsLayoutHistoryState::Init()
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{
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return mStates.Init() ? NS_OK : NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsLayoutHistoryState::AddState(const nsCString& aStateKey, nsPresState* aState)
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{
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return mStates.Put(aStateKey, aState) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
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}
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NS_IMETHODIMP
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nsLayoutHistoryState::GetState(const nsCString& aKey, nsPresState** aState)
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{
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mStates.Get(aKey, aState);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsLayoutHistoryState::RemoveState(const nsCString& aKey)
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{
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mStates.Remove(aKey);
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return NS_OK;
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}
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