CH/CH_UndoGroup.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.
 *
 * Produced by:
 *      Neil Girdhar
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        CH_UndoGroup.h ( OP Library, C++)
 *
 * COMMENTS:    This class handles the undoing of channel group 
 *              operations (from JIVE applications).
 *
 *              This class handles the updating of internal data
 *              when a channel group operation is undone/redone.
 */

#ifndef __CH_UndoGroup__
#define __CH_UndoGroup__

#include "CH_API.h"
#include <UT/UT_Undo.h>
#include "CH_ChannelRef.h"

class CH_Group;
class CH_Manager;

class CH_API CH_UndoGroup : public UT_Undo
{
public:
    CH_UndoGroup( CH_Group *chg, bool reverse );
    virtual     ~CH_UndoGroup();

    virtual void undo();
    virtual void redo();

protected:
    virtual void         swap();
    CH_Group            *getGroup() const;

    UT_String            myPath;
    bool                 myReverse;
};

class CH_API CH_UndoGroupCreateDelete: public CH_UndoGroup
{
public:
    CH_UndoGroupCreateDelete( CH_Group *chg, bool reverse );

private:
    virtual void         swap();
};

class CH_API CH_UndoGroupRename: public CH_UndoGroup
{
public:
    CH_UndoGroupRename(
            CH_Group *chg,
            const char *oldName, const char *newName );
private:
    virtual void         swap();

private:
    UT_String            myOldName;
    UT_String            myNewName;
};

class CH_API CH_UndoGroupLoadClear: public CH_UndoGroup
{
public:
    CH_UndoGroupLoadClear( CH_Group *chg, bool reverse );
    ~CH_UndoGroupLoadClear();

private:
    virtual void         swap();

private:
    void                 saveChannels();

    char                *myBuffer;
    size_t               myBufSize;
};

class CH_API CH_UndoGroupAddRemoveChannel: public CH_UndoGroup
{
public:
    CH_UndoGroupAddRemoveChannel(
            CH_Group *chg, bool reverse,
            const CH_ChannelRef &chref );
private:
    virtual void         swap();

private:
    CH_ChannelRef        myChanRef;
};

class CH_API CH_UndoGroupMove: public CH_UndoGroup
{
public:
    CH_UndoGroupMove( CH_Group *chgsp, CH_Group *chgtp,
                        const char *old_name, const char *new_name );
private:
    virtual void         swap();

private:
    UT_String            myOldName;
    UT_String            myNewName;
    UT_String            myTargetParentPath;
};

class CH_API CH_UndoGroupChangeIndex: public CH_UndoGroup
{
public:
    CH_UndoGroupChangeIndex( CH_Group *chg, int old_index, int new_index );

private:
    virtual void         swap();

private:
    int                  myOldIndex;
    int                  myNewIndex;
};
#endif

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