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39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
#ifndef _nsIStatefulFrame_h
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#define _nsIStatefulFrame_h
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#include "nsISupports.h"
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class nsIPresContext;
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class nsIPresState;
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#define NS_ISTATEFULFRAME_IID_STR "306c8ca0-5f0c-11d3-a9fb-000064657374"
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#define NS_ISTATEFULFRAME_IID \
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{0x306c8ca0, 0x5f0c, 0x11d3, \
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{0xa9, 0xfb, 0x00, 0x00, 0x64, 0x65, 0x73, 0x74}}
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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 implement nsIStatefulFrame, add an entry to this enum and use it
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// in your GetStateType method to prevent collisions.
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enum StateType {eNoType=-1, eCheckboxType, eFileType, eRadioType, eSelectType,
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eTextType, eScrollType, eNumStateTypes};
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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 GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType) = 0;
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NS_IMETHOD SaveState(nsIPresContext* aPresContext, nsIPresState** aState) = 0;
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NS_IMETHOD RestoreState(nsIPresContext* aPresContext, nsIPresState* aState) = 0;
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};
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#endif /* _nsIStatefulFrame_h */
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