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/* -*- 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/. */
#ifndef nsIPercentBSizeObserver_h___
#define nsIPercentBSizeObserver_h___
#include "nsQueryFrame.h"
namespace mozilla {
struct ReflowInput;
} // namespace mozilla
/**
* This interface is supported by frames that need to provide computed bsize
* values to children during reflow which would otherwise not happen. Currently
* only table cells support this.
*/
class nsIPercentBSizeObserver {
public:
NS_DECL_QUERYFRAME_TARGET(nsIPercentBSizeObserver)
// Notify the observer that aReflowInput has no computed bsize,
// but it has a percent bsize
virtual void NotifyPercentBSize(const mozilla::ReflowInput& aReflowInput) = 0;
// Ask the observer if it should observe aReflowInput.frame
virtual bool NeedsToObserve(const mozilla::ReflowInput& aReflowInput) = 0;
};
#endif // nsIPercentBSizeObserver_h___
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