gridcelldecimal.java

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/* 
 * WExtLib - A class library for the Superwaba Virtual Machine
 * Copyright (C) 2005, Virgilio Alexandre Fornazin
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package wextlib.ui.grid;

import wextlib.ui.editors.*;
import wextlib.util.*;
import waba.fx.*;

/**
 * This class implements a default Grid Cell with decimal editing support
 * 
 * @author Virgilio Alexandre Fornazin (mailto:[e-mail])
 */
public final class GridCellDecimal extends GridCell
{
	/** Defines numeric precision */
	private int m_iPrecision;
	/** Defines numeric scale */
	private int m_iDecimals;
	/** Prefix for formatting number */
	private String m_strPrefix;
	
	/** In-place editor */
	private DecimalEdit m_Editor;
	
	/**
	 * Default constructor
	 */
	public GridCellDecimal()
	{
		m_iPrecision = 12;
		m_iDecimals = 2;
		
		m_strPrefix = "";
		
		setDouble(0);
		
		m_Editor = null;
	}

	/**
	 * Update display of the number
	 */
	public void updateDisplay()
	{
		setDouble(getDouble());
	}
	
	/**
	 * Get the number format prefix
	 */
	public String getPrefix()
	{
		return m_strPrefix;
	}
	
	/**
	 * Set the number format prefix
	 */
	public void setPrefix(String strPrefix)
	{
		m_strPrefix = strPrefix;
		
		updateDisplay();
	}
	
	/**
	 * Get current precision (not currently used)
	 */
	public int getPrecision()
	{
		return m_iPrecision;
	}

	/**
	 * Set current precision (not currently used)
	 */
	public void setPrecision(int iPrecision)
	{
		m_iPrecision = iPrecision;
		
		updateDisplay();
	}

	/**
	 * Get current decimal places
	 */
	public int getDecimals()
	{
		return m_iDecimals;
	}
	
	/**
	 * Set current decimal places
	 */
	public void setDecimals(int iDecimals)
	{
		m_iDecimals = iDecimals;
		
		updateDisplay();
	}
	
	/**
	 * Get current value as double
	 */
	public double getDouble()
	{
		return NumberFormat.parseNumber(m_strCellText);
	}

	/**
	 * Set current value as double and update precision and decimal places
	 */
	public void setDouble(double dblDouble, int iPrecision, int iDecimals)
	{
		if (iPrecision != -1)
		{
			m_iPrecision = iPrecision;
		}
		
		if (iDecimals != -1)
		{
			m_iDecimals = iDecimals;
		}
		
		m_strCellText = NumberFormat.formatNumber(m_strPrefix, dblDouble, m_iDecimals);
	}
	
	/**
	 * Set current value as a double
	 */
	public void setDouble(double dblDouble)
	{
		setDouble(dblDouble, -1, -1);
	}
	
	/**
	 * Get the cell text
	 */
	public String getCellText()
	{
		return m_strCellText;
	}
	
	/**
	 * Set the cell text
	 */
	public void setCellText(String strText)
	{
		setDouble(NumberFormat.parseNumber(strText));
	}

	public boolean supportEditing()
	{
		return true;
	}
	
	public boolean onStartEdit(Grid grid, GridCellID cellID, Rect cellRect, Color clrForeColor, Color clrBackColor, Font cellFont, int chrCode)
	{
		super.onStartEdit(grid, cellID, cellRect, clrForeColor, clrBackColor, cellFont, chrCode);
		
		m_Editor = new GridCellDecimalEditor();
		
		m_EditGrid.add(m_Editor);
		m_EditControl = m_Editor;
		
		m_Editor.setVisible(false);
		m_Editor.setRect(m_EditRect);

		if (m_EditBackColor != null)
		{
			m_Editor.setBackColor(m_EditBackColor);
		}
		
		if (m_EditForeColor != null)
		{
			m_Editor.setForeColor(m_EditForeColor);
		}
		
		if (m_EditFont != null)
		{
			m_Editor.setFont(m_EditFont);
		}
		
		m_Editor.setPrecision(m_iPrecision);
		m_Editor.setDecimals(m_iDecimals);

		m_Editor.setDouble(getDouble(), m_iPrecision, m_iDecimals);
		
		m_Editor.setVisible(true);
		m_Editor.setCursorPos(0, m_Editor.getText().length());
		m_Editor.requestFocus();
		
		return true;
	}
	
	public boolean onEndEdit()
	{
		if (m_Editor == null)
		{
			return false;
		}
		
		setDouble(m_Editor.getDouble());

		m_Editor = null;
		
		m_EditGrid.remove(m_EditControl);
		m_EditControl = null;
		
		return true;
	}
}