forked from mirrors/gecko-dev
336cad5a55
Differential Revision: https://phabricator.services.mozilla.com/D32258 --HG-- extra : moz-landing-system : lando
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
* interface for rendering objects whose state is saved in
|
|
* session-history (back-forward navigation)
|
|
*/
|
|
|
|
#ifndef _nsIStatefulFrame_h
|
|
#define _nsIStatefulFrame_h
|
|
|
|
#include "nsContentUtils.h"
|
|
#include "nsQueryFrame.h"
|
|
|
|
namespace mozilla {
|
|
class PresState;
|
|
} // namespace mozilla
|
|
|
|
class nsIStatefulFrame {
|
|
public:
|
|
NS_DECL_QUERYFRAME_TARGET(nsIStatefulFrame)
|
|
|
|
// Save the state for this frame.
|
|
virtual mozilla::UniquePtr<mozilla::PresState> SaveState() = 0;
|
|
|
|
// Restore the state for this frame from aState
|
|
NS_IMETHOD RestoreState(mozilla::PresState* aState) = 0;
|
|
|
|
// Generate a key for this stateful frame
|
|
virtual void GenerateStateKey(nsIContent* aContent,
|
|
mozilla::dom::Document* aDocument,
|
|
nsACString& aKey) {
|
|
nsContentUtils::GenerateStateKey(aContent, aDocument, aKey);
|
|
};
|
|
};
|
|
|
|
#endif /* _nsIStatefulFrame_h */
|