displaypropertylinks.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        K. Tingdahl & N. Hemstra
 Date:          September 2008
________________________________________________________________________

-*/

#include "generalmod.h"
#include "factory.h"
#include "namedobj.h"
#include "threadlock.h"

class DisplayPropertyHolder;
class DisplayPropertyLink;

mExpClass(General) DisplayLinkManager
{
public:
                                DisplayLinkManager();
                                ~DisplayLinkManager();
    static DisplayLinkManager&  getImpl();

    int                         nrHolders() const;
    int                         addHolder(DisplayPropertyHolder*);
    const DisplayPropertyHolder* getHolder(int) const;

    void                        createPossibleLinks(DisplayPropertyHolder*,
                                        ObjectSet<DisplayPropertyLink>&);

    int                         nrDisplayPropertyLinks() const;
    int                         getDisplayPropertyLinkID(int idx) const;
    int                         addDisplayPropertyLink(DisplayPropertyLink*);
    void                        removeDisplayPropertyLink(int id);
    DisplayPropertyLink*        getDisplayPropertyLink(int id);
    const DisplayPropertyLink*  getDisplayPropertyLink(int id) const;

    bool                        usePar(const IOPar&);
    void                        fillPar(IOPar&) const;

protected:

    friend                      class DisplayPropertyHolder;
    void                        removeHolder(DisplayPropertyHolder*);

    ObjectSet<DisplayPropertyHolder> holders_;
    int                         freeholderid_;
    mutable Threads::Lock       lock_;

    ObjectSet<DisplayPropertyLink> propertylinks_;
    TypeSet<int>                propertylinkids_;
    int                         freelinkid_;
};





mExpClass(General) DisplayPropertyHolder
{
public:
                        DisplayPropertyHolder(bool reg);

    virtual             ~DisplayPropertyHolder();

    int                 propertyHolderID() const;
    virtual const char* getDisplayPropertyHolderName() const;

private:
    friend              class DisplayLinkManager;
    int                 propertyholderid_;

};


mExpClass(General) DisplayPropertyLink : public NamedObject
{
public:
    mDefineFactory1ParamInClass(DisplayPropertyLink,
            ObjectSet<DisplayPropertyHolder>&,factory);

    virtual const char*         type() const                            = 0;
    virtual const char*         userType() const;

    virtual bool                init();
                                //Called when added to manager, before
                                //this call, no callbacks should be set.
                                
    bool                        addHolder(DisplayPropertyHolder*);
    void                        removeHolder(DisplayPropertyHolder*);
    bool                        isValid() const;
    virtual void                getDescription(BufferString&) const;

    int                         nrDisplayPropertyHolders() const;
    const DisplayPropertyHolder* getDisplayPropertyHolder(int idx) const;

protected:
    friend                      class DisplayLinkManager;
    virtual bool                syncNow(const DisplayPropertyHolder* origin,
                                        DisplayPropertyHolder* target);
                                //If Target is zero, sync all but origin

    virtual bool                isHolderOK(const DisplayPropertyHolder*);
                                DisplayPropertyLink(DisplayPropertyHolder*,
                                                    DisplayPropertyHolder*);

    ObjectSet<DisplayPropertyHolder>    holders_;
};