RAY_StylerInfo.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        RAY library (C++)
 *
 * COMMENTS:    This contains styler information, along with the parent
 *              styler and subject used to create the styler. This allows
 *              updating the parent styler and automatically rebuilding the
 *              child styler.
 *
 */

#ifndef __RAY_StylerInfo_H__
#define __RAY_StylerInfo_H__

#include "RAY_API.h"
#include <UT/UT_IntrusivePtr.h>
#include <UT/UT_SharedPtr.h>
#include <STY/STY_Styler.h>
#include <STY/STY_Subject.h>
#include <GSTY/GSTY_SubjectPrimGroup.h>

class RAY_API RAY_StylerInfo
{
public:
    using SharedPrimGroup = UT_SharedPtr<GSTY_SubjectPrimGroup>;

                         RAY_StylerInfo();
                         RAY_StylerInfo(const STY_Styler &parent_styler,
                                const STY_SubjectHandle &subject);
                         RAY_StylerInfo(const STY_Styler &parent_styler,
                                const UT_Array<STY_SubjectHandle> &subjects);
                        ~RAY_StylerInfo();

    const STY_Styler    &getStyler() const;
    void                 updateStyler(const STY_Styler &new_parent_styler);
    void                 setParentAndSubject(const STY_Styler &styler,
                                const STY_SubjectHandle &subject);
    void                 setParentAndSubjects(const STY_Styler &styler,
                                const UT_Array<STY_SubjectHandle> &subjects);
    void                 addSubject(const STY_SubjectHandle &subject);
    void                 clear();

    void                setGroupSharingHolder(const SharedPrimGroup &g)
                            { myGroupSharingHolder = g; }

private:
    class StylerInfoData;
    class StylerInfoData
        : public UT_IntrusiveRefCounter<StylerInfoData>
    {
        public:
            StylerInfoData();
            ~StylerInfoData();
            void                         rebuildStyler();

            STY_Styler                  myParentStyler;
            UT_Array<STY_SubjectHandle> mySubjects;
            STY_Styler                  myStyler;
    };
    typedef UT_IntrusivePtr<StylerInfoData>     StylerInfoDataHandle;
    SharedPrimGroup                             myGroupSharingHolder;

    void                 createUnsharedStylerInfoData()
                         {
                            if (!myData)
                                myData.reset(new StylerInfoData());
                            else if (myData->use_count() > 1)
                                myData.reset(new StylerInfoData(*myData));
                         }

    StylerInfoDataHandle myData;
};

#endif