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65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* interface for container for information saved in session history when
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* the document is not
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*/
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#ifndef _nsILayoutHistoryState_h
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#define _nsILayoutHistoryState_h
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#include "nsISupports.h"
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#include "nsStringFwd.h"
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class nsPresState;
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#define NS_ILAYOUTHISTORYSTATE_IID \
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{ 0x003919e2, 0x5e6b, 0x4d76, \
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{ 0xa9, 0x4f, 0xbc, 0x5d, 0x15, 0x5b, 0x1c, 0x67 } }
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class nsILayoutHistoryState : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILAYOUTHISTORYSTATE_IID)
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/**
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* Set |aState| as the state object for |aKey|.
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* This _transfers_ownership_ of |aState| to the LayoutHistoryState.
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* It will be freed when RemoveState() is called or when the
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* LayoutHistoryState is destroyed.
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*/
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NS_IMETHOD AddState(const nsCString& aKey, nsPresState* aState) = 0;
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/**
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* Look up the state object for |aKey|.
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*/
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NS_IMETHOD GetState(const nsCString& aKey, nsPresState** aState) = 0;
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/**
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* Remove the state object for |aKey|.
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*/
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NS_IMETHOD RemoveState(const nsCString& aKey) = 0;
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/**
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* Check whether this history has any states in it
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*/
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NS_IMETHOD_(bool) HasStates() const = 0;
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/**
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* Sets whether this history can contain only scroll position history
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* or all possible history
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*/
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NS_IMETHOD SetScrollPositionOnly(const bool aFlag) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsILayoutHistoryState,
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NS_ILAYOUTHISTORYSTATE_IID)
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nsresult
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NS_NewLayoutHistoryState(nsILayoutHistoryState** aState);
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#endif /* _nsILayoutHistoryState_h */
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