Multicolumn Combobox with Additional Format Conditions

#pragma once

#include "MCCell.h"
#include "MCColumn.h"
#include "MCRow.h"
#include "FormatCondition.h"

// CMCComboBox

class CMCComboBox : public CComboBox
{
	DECLARE_DYNAMIC(CMCComboBox)

public:
	CMCComboBox();
	virtual ~CMCComboBox();

			//	sets the zero based display column index. It's value is shown in the edit control. If this function isn't called,
			//	the first added column will be the display column
			void				 Set_DisplayColumnIndex				( int nDisplayColumnIndex );
			//	adds a new column to the combobox.
			CMCColumn			*Add_Column							( CMCColumn::ColumnAlignment eColumnAlignment = CMCColumn::CA_AlignmentLeft );
			
			//	adds a new (allready created) row to the dropdown list
			bool				 Add_Row							( CMCRow *pRowData );
			//	creates a new row , adds it to the dropdown list and returns the pointer to the row object (NULL on failure)
			CMCRow				*Add_Row							( void );
			//	returns a pointer to the referenced row (index offset is 0). NULL if ItemID is out of range
			CMCRow				*Get_Row							( int nItemID );
			//	returns a pointer to the first matching format condition. If no format condition matches, the default format condition is returned
			//	if no default format condition is defined, NULL is returned
			CFormatCondition	*Get_FormatCondition				( CMCRow *pRow );
			//	creates a new format condition. The objects that are/might be referenced by the variables pValue1 and pValue2 are freed during 
			//	destruction of the format condition
			CFormatCondition	*Create_FormatCondition				( CString strFormatConditionName, int nColumnIndex, 
																	  CFormatCondition::eFormatConditionOperator eFormatConditionOperator,
																	  CMCCell *pValue1, CMCCell *pValue2 = NULL );

			//	calculates the needed width of the dropdown list and sets it to the control.
			//	this function should be called after alls rows have been added or if cell data has changed
			void				 CalcDropdownListWidth				( void );

			//	returns a boolean value, that defined whether a found format condition should also be used to display
			//	the edit control value or not
			bool				 Get_ShowFormatConditionInEditField	( void );
			//	true  -> the found format condition is also used for displaying the value in the edit control
			//	false -> The value in the edit control is displayed "normal"
			void				 Set_ShowFormatConditionInEditField	( bool bShowFormatConditionInEditField );

private:

	virtual	void				 DrawItem							( LPDRAWITEMSTRUCT lpDrawItemStruct );
	virtual	void				 MeasureItem						( LPMEASUREITEMSTRUCT lpMeasureItemStruct );

			// A flag used in MeasureItem, see comments there
			bool				 m_bItemHeightSet;

			//	multicolumn additions
			int					 m_nDisplayColumnIndex;			//	columnindex - defines the columns which owns the data, that is displayed in the edit field. 
			CObList				 m_olColumns;
			CObList				 m_olFormatConditions;
			CObList				 m_olRows;
			CMCRow				*m_pRowToBeAdded;			//	row is added, but the itemdata is not yet added to the new entry.
			bool				 m_bShowFormatConditionInEditField;

protected:

	DECLARE_MESSAGE_MAP()
public:
	virtual int CompareItem(LPCOMPAREITEMSTRUCT /*lpCompareItemStruct*/);
};