vpassword.java

Java写的ERP系统

/******************************************************************************
 * The contents of this file are subject to the   Compiere License  Version 1.1
 * ("License"); You may not use this file except in compliance with the License
 * You may obtain a copy of the License at http://www.compiere.org/license.html
 * Software distributed under the License is distributed on an  "AS IS"  basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * The Original Code is                  Compiere  ERP & CRM  Business Solution
 * The Initial Developer of the Original Code is Jorg Janke  and ComPiere, Inc.
 * Portions created by Jorg Janke are Copyright (C) 1999-2001 Jorg Janke, parts
 * created by ComPiere are Copyright (C) ComPiere, Inc.;   All Rights Reserved.
 * Contributor(s): ______________________________________.
 *****************************************************************************/
package org.compiere.grid.ed;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.beans.*;

import org.compiere.apps.*;
import org.compiere.util.*;
import org.compiere.plaf.*;
import org.compiere.swing.*;
import org.compiere.model.*;

/**
 *	Data Binding:
 *		VEditors call fireVetoableChange(m_columnName, null, getText());
 *		GridController (for Single-Row) and VCellExitor (for Multi-Row)
 *      listen to Vetoable Change Listener (vetoableChange)
 *		then set the value for that column in the current row in the table
 *
 *  @author 	Jorg Janke
 *  @version 	$Id: VPassword.java,v 1.6 2003/04/29 09:21:41 jpedersen Exp $
 */
public final class VPassword extends CPassword
	implements VEditor, KeyListener, FocusListener, ActionListener
{
	/**
	 *	IDE Bean Constructor for 30 character updateable field
	 */
	public VPassword()
	{
		this("Password", false, false, true, 30, 30, "");
	}	//	VPassword

	/**
	 *	Detail Constructor
	 *  @param columnName
	 *  @param mandatory
	 *  @param isReadOnly
	 *  @param isUpdateable
	 *  @param displayLength
	 *  @param fieldLength
	 *  @param VFormat
	 */
	public VPassword (String columnName, boolean mandatory, boolean isReadOnly, boolean isUpdateable,
		int displayLength, int fieldLength, String VFormat)
	{
		super (displayLength>VString.MAXDISPLAY_LENGTH ? VString.MAXDISPLAY_LENGTH : displayLength);
		m_columnName = columnName;
		if (VFormat == null)
			VFormat = "";
		m_VFormat = VFormat;
		m_fieldLength = fieldLength;
		if (m_VFormat.length() != 0 || m_fieldLength != 0)
			setDocument(new MDocString(m_VFormat, m_fieldLength, this));
		if (m_VFormat.length() != 0)
			setCaret(new VOvrCaret());
		//
		setMandatory(mandatory);

		//	Editable
		if (isReadOnly || !isUpdateable)
		{
			setEditable(false);
			setBackground(CompierePLAF.getFieldBackground_Inactive());
		}

		this.addKeyListener(this);
		this.addFocusListener(this);
		this.addActionListener(this);
		this.setInputVerifier(new CInputVerifier()); //Must be called after FocusListener in order to work

		setForeground(CompierePLAF.getTextColor_Normal());
		setBackground(CompierePLAF.getFieldBackground_Normal());
	}	//	VPassword

	/**
	 *  Dispose
	 */
	public void dispose()
	{
		m_mField = null;
	}   //  dispose

	private MField      m_mField = null;

	private String		m_columnName;
	private String		m_oldText;
	private boolean		m_firstChange;
	private String		m_VFormat;
	private int			m_fieldLength;

	/**
	 *	Set Editor to value
	 *  @param value
	 */
	public void setValue (Object value)
	{
		if (value == null)
			m_oldText = "";
		else
			m_oldText = value.toString();
		setText (m_oldText);
		m_firstChange = true;
	}	//	setValue

	/**
	 *  Property Change Listener
	 *  @param evt
	 */
	public void propertyChange (PropertyChangeEvent evt)
	{
		if (evt.getPropertyName().equals(org.compiere.model.MField.PROPERTY))
			setValue(evt.getNewValue());
	}   //  propertyChange

	/**
	 *	Return Editor value
	 *  @return value
	 */
	public Object getValue()
	{
		return String.valueOf(getPassword());
	}	//	getValue

	/**
	 *  Return Display Value
	 *  @return value
	 */
	public String getDisplay()
	{
		return String.valueOf(getPassword());
	}   //  getDisplay

	/**************************************************************************
	 *	Key Listener Interface
	 *  @param e
	 */
	public void keyTyped(KeyEvent e)	{}
	public void keyPressed(KeyEvent e)	{}

	/**
	 *	Key Listener.
	 *		- Escape 		- Restore old Text
	 *		- firstChange	- signal change
	 *  @param e
	 */
	public void keyReleased(KeyEvent e)
	{
		//  ESC
		String newText = String.valueOf(getPassword());
		if (e.getKeyCode() == KeyEvent.VK_ESCAPE
			&& !newText.equals(m_oldText))
		{
			setText(m_oldText);
			return;
		}
		//  first change - indicate
		if (m_firstChange && !m_oldText.equals(newText))
		{
			m_firstChange = false;
			try
			{
				fireVetoableChange(m_columnName, newText, null);
			}
			catch (PropertyVetoException pve)	{}
		}	//	firstChange
	}	//	keyReleased

	/**
	 *	Focus Gained	- Save for Escape
	 *  @param e
	 */
	public void focusGained (FocusEvent e)
	{
	//	Log.trace(this,Log.l4_Data, "VPassword.focusGained", e.paramString());
		m_oldText = String.valueOf(getPassword());
	}	//	focusGained

	/**
	 *	Data Binding to MTable (via GridController)
	 *  @param e
	 */
	public void focusLost (FocusEvent e)
	{
	//	Log.trace(this,Log.l4_Data, "VPassword.focusLost", e.paramString());
		return;
	}	//	focusLost

	/**
	 *	Data Binding to MTable (via GridController)	-	Enter pressed
	 *  @param e
	 */
	public void actionPerformed(ActionEvent e)
	{
		String newText = String.valueOf(getPassword());
		if (e.getActionCommand().equals(ValuePreference.NAME))
		{
			ValuePreference.start (m_mField, newText);
			return;
		}

		//  Data Binding
		try
		{
			fireVetoableChange(m_columnName, null, newText);
			m_oldText = newText;
		}
		catch (PropertyVetoException pve)	{}
	}	//	actionPerformed

	/**
	 *  Set Field/WindowNo for ValuePreference
	 *  @param mField
	 */
	public void setField (MField mField)
	{
		m_mField = mField;
	}   //  setField




class CInputVerifier extends InputVerifier {

     public boolean verify(JComponent input) {
		

		//Note: We always return true since Inputverifier is just used to guarantee that fireChange is called in due time

		//	something changed?
		String newText = String.valueOf(getPassword());
		if (newText == null && m_oldText == null)
			return true;
		else if (newText.equals(m_oldText))
			return true;
		//
		try
		{
			fireVetoableChange(m_columnName, null, newText);
			m_oldText = newText;
		}
		catch (PropertyVetoException pve)	{}
		return true;

     } // verify



   } // CInputVerifier



}	//	VPassword