attraggl.h

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// $Id: attraggl.h 751 2006-03-31 15:43:49Z alex $
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 */
//

#ifndef INC_ATTRAGGL
#define INC_ATTRAGGL



class CommonAttrMultiSet;
class NodeAttribute;
class MultiCommonAttrItem;

//#include <afxtempl.h>

inline BOOL CompareElements(const StringBase** pElement1, const StringBase** pElement2)
{
    const StringBase* const pString1 = *pElement1;
    const StringBase* const pString2 = *pElement2;

    return (*pString1 == *pString2);
}

// This function isn't needed on VC5 or later...
//#if _MSC_VER < 1100
/*inline UINT32 AFXAPI HashKey( const StringBase* pKey )
{
    return HashKey((const TCHAR*)(*pKey));
} */
//#endif

class CommonAttrMap : public CMap<const StringBase*, const StringBase*, MultiCommonAttrItem*, MultiCommonAttrItem*>
{
public:
    CommonAttrMap(INT32 nBlockSize = 10) : CMap<const StringBase*, const StringBase*, MultiCommonAttrItem*, MultiCommonAttrItem*>(nBlockSize) {}


};


class NodePointer : public ListItem
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(NodePointer);
public:
    NodePointer(NodeAttribute& AttributeNode, AttributeIdentifier AttrID) :
        m_AttrID(AttrID),
        m_AttributeNode(AttributeNode)
        {}

    AttributeIdentifier     GetAttrID() const       {   return m_AttrID;    }
    NodeAttribute&          GetNode() const         {   return m_AttributeNode; }

private:
    AttributeIdentifier m_AttrID;
    NodeAttribute&      m_AttributeNode;
};


class CCUserAttrMap : public CMap<const StringBase*, const StringBase*, NodeAttribute*, NodeAttribute*>
{
    typedef CMap<const StringBase*, const StringBase*, NodeAttribute*, NodeAttribute*> BaseMap;
public:
    CCUserAttrMap(INT32 nBlockSize = 10) : 
        BaseMap(nBlockSize)
        {}

    virtual ~CCUserAttrMap();
        
    BOOL SetAt(const StringBase* key, NodeAttribute* pNewAttributeNode);
    void RemoveAll();

    NodePointer*    FindFirst() const;
    NodePointer*    FindNext(const NodePointer* const pPrevious) const;

private:
    List    m_NodeAttributes;
};


extern String_8 NonConstNullString;
/********************************************************************************************

>   class RenderableNodeEnumerator : public CC_CLASS_MEMDUMP

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/06/97

    Purpose:    Iterates through a series of NodeRenderable nodes

********************************************************************************************/
class RenderableNodeEnumerator : public CC_CLASS_MEMDUMP
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(RenderableNodeEnumerator);

public:
    virtual ~RenderableNodeEnumerator() { }
    virtual NodeRenderable* FindFirst() const = 0;
    virtual NodeRenderable* FindNext(NodeRenderable* const pPrevious) const = 0;
};



/********************************************************************************************

>   class RangeEnumerator : public RenderableNodeEnumerator

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/06/97

    Purpose:    Iterates through a series of NodeRenderable nodes

********************************************************************************************/
class RangeEnumerator : public RenderableNodeEnumerator
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(RangeEnumerator);

public:
    RangeEnumerator(Range* const pRange) : m_pRange(pRange) {}

    // Not sure how we get away with this...
    virtual NodeRenderable* FindFirst() const                                   {   return (NodeRenderable*)m_pRange->FindFirst();  }
    virtual NodeRenderable* FindNext(NodeRenderable* const pPrevious) const {   return (NodeRenderable*)m_pRange->FindNext((Node*)pPrevious);   }

private:
    Range*  m_pRange;
};

class DocPseudoEnumerator : public RenderableNodeEnumerator
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(DocPseudoEnumerator);

public:
    DocPseudoEnumerator(Document* const pDocument) : m_pDocument(pDocument) {}

    // Not sure how we get away with this...
    virtual NodeRenderable* FindFirst() const;
    virtual NodeRenderable* FindNext(NodeRenderable* const pPrevious)    const  {   return NULL;    }

private:
    Document*       m_pDocument;
};


/********************************************************************************************

>   class AttributeAgglomerator : public CC_CLASS_MEMDUMP

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/06/97

    Purpose:    An AttributeAgglomerator finds the Common Attributes among the nodes
                provided by an RenderableNodeEnumerator.
                This allows us to derive classes to retrieve more specialized attributes,
                namely AttrUser's.
    Notes:      This code was copied from Range. It should either replace the code there
                or be thrown out when plug-in attributes are supported.

********************************************************************************************/
class AttributeAgglomerator : public CC_CLASS_MEMDUMP
{
    CC_DECLARE_MEMDUMP(AttributeAgglomerator);

public:
    virtual ~AttributeAgglomerator() { }
    BOOL FindCommonAttributes(  RenderableNodeEnumerator& Enumerator, 
                                CommonAttrMultiSet* const pCommonAttributeSet);

    static const UINT32 MaxAttributes;

protected:
    virtual AttributeIdentifier GetAttributeType(NodeAttribute* const pAttrib) const = 0;
    virtual BOOL FindAppliedAttributes(Node* const pNode, CCUserAttrMap* const pAttribMap) const;

};



/********************************************************************************************

>   class UserAttributeAgglomerator : public AttributeAgglomerator

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/06/97

    Purpose:    An AttributeAgglomerator finds the Common Attributes among the nodes
                provided by an RenderableNodeEnumerator.
                This allows us to derive classes to retrieve more specialized attributes,
                namely AttrUser's.

********************************************************************************************/
class UserAttributeAgglomerator : public AttributeAgglomerator
{
    CC_DECLARE_MEMDUMP(UserAttributeAgglomerator);

public:

protected:
    virtual AttributeIdentifier GetAttributeType(NodeAttribute* const pAttrib) const;
};



/********************************************************************************************

>   class AppliedAttribute : public VisibleListItem

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    01/07/97

    Purpose:    At the moment it allows applied attributes to appear in a list, but will 
                probably supersede the MultiCommonAttrItem class.

********************************************************************************************/
class AppliedAttribute : public VisibleListItem
{
    CC_DECLARE_MEMDUMP(AppliedAttribute);
public:
//  Don't forget to supply these
//  virtual BOOL Display(DialogOp& Dialog) = 0;
//  virtual void Hide() = 0;
//  virtual StringBase& GetText(StringBase& Description) const = 0;
    virtual BOOL operator > (const VisibleListItem& OtherItem) const;
    virtual AttributeIdentifier GetAttrID() const = 0;
    virtual BOOL ApplyAttribute(Operation& OpToApplyWith) = 0;
    virtual VisibleAttribute* GetVisibleAttribute() = 0;
};


/********************************************************************************************

>   class SingletonAppliedAttribute : public AppliedAttribute

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    01/07/97

    Purpose:    Represents an applied attribute of which there is only one for the objects
                given by the iterator.

********************************************************************************************/
class SingletonAppliedAttribute : public AppliedAttribute
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(SingletonAppliedAttribute);

public:
    SingletonAppliedAttribute(NodeAttribute& TheAttribute);
    SingletonAppliedAttribute(VisibleAttribute& TheVisibleAttribute);
    SingletonAppliedAttribute(const SingletonAppliedAttribute& Other) : m_AttrID(NonConstNullString)
        {   TRACE( wxT("SingletonAppliedAttribute copy constructor not implemented\n") );   }

    virtual ~SingletonAppliedAttribute();

// Implemented pure functions
//  from UserInterface...
    virtual BOOL Display(DialogOp& Dialog);
//  virtual BOOL Interact(DialogOp& Dialog);    // well it should be in UserInterface
    virtual void Hide();

//  from VisibleListItem...
    virtual StringBase& GetText(StringBase& Description) const;

//  from AppliedAttribute...
    virtual AttributeIdentifier GetAttrID() const               {   return m_AttrID;    }
    virtual BOOL ApplyAttribute(Operation& OpToApplyWith);
    virtual VisibleAttribute* GetVisibleAttribute() {   return m_pVisibleAttribute; }

private:
    // should be a reference...
    VisibleAttribute*   m_pVisibleAttribute;
    String_128          m_AttrID;
    DialogOp*           m_pDialog;
};


/********************************************************************************************

>   class CommonAppliedAttribute : public AppliedAttribute

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    01/07/97

    Purpose:    Represents an applied attribute of which there is only one for the objects
                given by the iterator.

********************************************************************************************/
class CommonAppliedAttribute : public AppliedAttribute
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(CommonAppliedAttribute);

public:
    CommonAppliedAttribute(NodeAttribute& AttrInstance);
    virtual ~CommonAppliedAttribute();
    CommonAppliedAttribute(const CommonAppliedAttribute& Other) : m_AttrID(NullString)
        { TRACE( wxT("CommonAppliedAttribute copy constructor not implemented\n") ); }

// Implemented pure functions
//  from UserInterface...
    virtual BOOL Display(DialogOp& Dialog);
    virtual void Hide();

//  from VisibleListItem...
    virtual StringBase& GetText(StringBase& Description) const;

//  from AppliedAttribute...
    virtual AttributeIdentifier GetAttrID() const               {   return m_AttrID;    }
    virtual BOOL ApplyAttribute(Operation& OpToApplyWith);
    virtual VisibleAttribute* GetVisibleAttribute()             {   return m_pVisibleAttribute; }

private:
    // should be a reference...
    VisibleAttribute*   m_pVisibleAttribute;
    AttributeIdentifier m_AttrID;
};


/********************************************************************************************

>   class MultiAppliedAttribute : public AppliedAttribute

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
    Created:    01/07/97

    Purpose:    Represents an applied attribute of which there is only one for the objects
                given by the iterator.

********************************************************************************************/
class MultiAppliedAttribute : public AppliedAttribute
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(MultiAppliedAttribute);

public:
    MultiAppliedAttribute(NodeAttribute& AttrInstance);
// Implemented pure functions
//  from UserInterface...
    virtual BOOL Display(DialogOp& Dialog);
    virtual void Hide();

//  from VisibleListItem...
    virtual StringBase& GetText(StringBase& Description) const;

//  from AppliedAttribute...
    virtual AttributeIdentifier GetAttrID() const           {   return m_AttrID;    }
    virtual BOOL ApplyAttribute(Operation& OpToApplyWith)   {   return TRUE;    }   // DON'T DO IT!
    virtual VisibleAttribute* GetVisibleAttribute()         {   return NULL;    }

protected:
    const StringBase& GetAttributeDescription() const;

private:
    String_64           m_AttributeDescription;
    AttributeIdentifier m_AttrID;
};


/********************************************************************************************

>   class MultiCommonAttrItem: public ListItem

    Author:     Simon_Maneggio (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/8/94

    Purpose:    This ListItem is used by Range::FindCommonAttributes.

********************************************************************************************/
class MultiCommonAttrItem : public ListItem
{
    // Declare the class for memory tracking
    CC_DECLARE_MEMDUMP(MultiCommonAttrItem);
 
public:
    MultiCommonAttrItem(AttributeIdentifier AttrType, NodeAttribute* const pAttr = NULL);
    ~MultiCommonAttrItem();  

    void ClearResults();

    enum CAResult {     AA_INVALID = 0,     // indicates uninitialized data
                        AA_NONE = 1, 
                        AA_SINGLE,
                        AA_COMMON,
                        AA_MANY
                    };

    AttributeIdentifier         GetAttrID() const       {   return m_AttrType;  }
    const CAResult&             GetStatus() const       {   return m_Status;    }
    NodeAttribute*              GetNode() const         {   return m_pAttr; }

    void SetStatus(const CAResult& Status)              {   m_Status = Status;  }
    void SetNode(NodeAttribute* const pAttr)            {   m_pAttr = pAttr;    }

    AppliedAttribute* CreateVisibleAppliedAttribute() const;    // don't do it like this

private:        
    CAResult                    m_Status;
    AttributeIdentifier         m_AttrType;     // The RuntimeClass of the attribute
    NodeAttribute*              m_pAttr;        // A pointer to an instance of an attribute with AttrType
                                                // Runtime class - can be NULL
    BOOL                        m_AttrIsCopy;   // Is pAttr a pointer to an attribute, or a copy. If it is a 
                                                // copy then it is the responsibility of the MultiCommonAttrItem's
                                                // destructor to destroy it.
};



/********************************************************************************************

>   class CommonAttrMultiSet : public CommonAttrMap

    Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com> (from Simon)
    Created:    13/9/95

    Purpose:    A CommonAttributeSet. See Range::FindCommonAttributes 

    SeeAlso:    MultiCommonAttrItem

********************************************************************************************/
class CommonAttrMultiSet : public CommonAttrMap
{
public:
    virtual ~CommonAttrMultiSet();

    void ClearResults();

    // Methods for setting up the CommonAttrMultiSet prior to a call to FindCommonAttributes
    virtual BOOL AddTypeToSet(AttributeIdentifier AttrType, NodeAttribute* const pAttr);

    // Methods for accessing the CommonAttrMultiSet 
    MultiCommonAttrItem*    FindAttrItem(AttributeIdentifier AttrType);
    MultiCommonAttrItem*    FindFirst() const;
    MultiCommonAttrItem*    FindNext(const MultiCommonAttrItem* const pPrevious) const;

protected:
private:
    List    m_CommonAttrList;
};


#endif  // INC_ATTRAGGL

---