TextStoryThreadHelper.h

//========================================================================================
// 
// $File$
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// Owner: dwaterfa
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// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
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// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance 
// with the terms of the Adobe license agreement accompanying it. If you have received
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#ifndef __TextStoryThreadHelper__
#define __TextStoryThreadHelper__


#include "ITextModel.h"
#include "ITextStoryThreadDict.h"


class TextStoryThreadHelper
{
 public:

 TextStoryThreadHelper(const ITextModel* textModel);

 bool16 IsComposable(TextIndex at)
 {
 UpdateST(at);
 return fCurrentSTComposable;
 }

 TextIndex GetComposedEndTextIndex(const RangeData& range,
 UIDRef* pFrameRefToWaitOn);

 bool16 IsInOverset(TextIndex at)
 {
 UpdateST(at);
 return (fCurrentSTComposable && (at >= fCurrentSTOversetStart));
 }
 
 bool16 IsInUIViewableOverset(TextIndex at)
 {
 UpdateST(at);
 return (fCurrentSTComposable && (at >= fCurrentSTUIViewableOversetStart));
 }

 private:
 void UpdateST(TextIndex at);

 //
 // Members
 //
 IDataBase* fDB;
 UID fStoryUID;
 InterfacePtr<const ITextModel> fTextModel;

 TextIndex fCurrentSTStart;
 TextIndex fCurrentSTEnd;
 TextIndex fCurrentSTUnComposedStart;
 TextIndex fCurrentSTOversetStart;
 bool16 fCurrentSTComposable;

 UID fCurrentSTDictUID; 
 InterfacePtr<const ITextStoryThreadDict> fCurrentSTDict;
 TextIndex fCurrentSTDictAnchorIndex;
 int32 fCurrentSTDictParcelCount;
 int32 fCurrentSTDictComposedParcelCount;
 int32 fCurrentSTDictNonOversetParcelCount;
 bool16 fCurrentSTDictComposable;
 TextIndex fCurrentSTUIViewableOversetStart;
};


#endif