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30 lines
927 B
C++
30 lines
927 B
C++
#ifndef _nsIStatefulFrame_h
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#define _nsIStatefulFrame_h
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#include "nsISupports.h"
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class nsPresContext;
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class nsPresState;
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#define NS_ISTATEFULFRAME_IID \
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{0x26254ab7, 0xdea3, 0x4375, \
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{0xb0, 0x1d, 0xbd, 0x11, 0xa1, 0x4b, 0x54, 0xbc}}
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class nsIStatefulFrame : public nsISupports {
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISTATEFULFRAME_IID)
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// If you create a special type stateful frame (e.g. scroll) that needs
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// to be captured outside of the standard pass through the frames, you'll need
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// a special ID by which to refer to that type.
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//
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// There is space reserved between standard ID's and special ID's by the
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// offset NS_CONTENT_ID_COUNTER_BASE
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enum SpecialStateID {eNoID=0, eDocumentScrollState};
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NS_IMETHOD SaveState(nsPresContext* aPresContext, nsPresState** aState) = 0;
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NS_IMETHOD RestoreState(nsPresContext* aPresContext, nsPresState* aState) = 0;
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};
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#endif /* _nsIStatefulFrame_h */
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