envparametersconfiguration.java

一个完整的XACML工程,学习XACML技术的好例子!

/*
* Copyright (c) 2006, University of Kent
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this 
* list of conditions and the following disclaimer.
* 
* Redistributions in binary form must reproduce the above copyright notice, 
* this list of conditions and the following disclaimer in the documentation 
* and/or other materials provided with the distribution. 
*
* 1. Neither the name of the University of Kent nor the names of its 
* contributors may be used to endorse or promote products derived from this 
* software without specific prior written permission. 
*
* 2. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS  
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
* PURPOSE ARE DISCLAIMED. 
*
* 3. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
* POSSIBILITY OF SUCH DAMAGE.
*
* 4. YOU AGREE THAT THE EXCLUSIONS IN PARAGRAPHS 2 AND 3 ABOVE ARE REASONABLE
* IN THE CIRCUMSTANCES.  IN PARTICULAR, YOU ACKNOWLEDGE (1) THAT THIS
* SOFTWARE HAS BEEN MADE AVAILABLE TO YOU FREE OF CHARGE, (2) THAT THIS
* SOFTWARE IS NOT "PRODUCT" QUALITY, BUT HAS BEEN PRODUCED BY A RESEARCH
* GROUP WHO DESIRE TO MAKE THIS SOFTWARE FREELY AVAILABLE TO PEOPLE WHO WISH
* TO USE IT, AND (3) THAT BECAUSE THIS SOFTWARE IS NOT OF "PRODUCT" QUALITY
* IT IS INEVITABLE THAT THERE WILL BE BUGS AND ERRORS, AND POSSIBLY MORE
* SERIOUS FAULTS, IN THIS SOFTWARE.
*
* 5. This license is governed, except to the extent that local laws
* necessarily apply, by the laws of England and Wales.
*/

/*
 * EnvParametersConfiguration.java - 8/06/06
 */
package issrg.editor2.configurations;

import issrg.utils.xml.*;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ResourceBundle;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 *
 * @author Christian Azzopardi
 */
public class EnvParametersConfiguration extends NodeItemList implements XMLChangeListener, KeyListener, ActionListener, ItemListener
{
    
    /**
     * Panels needed to place the component on, and get the GUI right. 
     */
    private JPanel eastPanel, westPanel, envParamConfigPanel;
    
    /**
     * Labels that will accompany the JTextFields, and will inform the user
     * what input is required.
     */
    private JLabel nameLabel, typeLabel;
    
    /**
     * TextFields which refer to the user's input.
     */
    private JTextField nameTextField;    
    
    /**
     * A description of what the dialog does (to fill up space).
     */
    private JTextArea descriptionText;
    
    private JComboBox dataTypeField;
    
    /**
     * Loads the Resource Strings and Labels for everything to display correctly.
     */
    ResourceBundle rbl = ResourceBundle.getBundle("issrg/editor2/PEComponent_i18n");
    String nameLabelCaption = rbl.getString("Environment_Parameters_ConfigDialog_Label_Name"); //contains Name
    String typeLabelCaption = rbl.getString("Environment_Parameters_ConfigDialog_Label_Type"); //contains Type
    String westBorderCaption = rbl.getString("Environment_Parameters_ConfigDialog_Border_West"); //contains Enter Environment Variable Details
    String eastBorderCaption = rbl.getString("Environment_Parameters_ConfigDialog_Border_East"); //contains Environment Variables
    String textBorderCaption = rbl.getString("Environment_Parameters_ConfigDialog_Border_TextArea"); //contains Description
    String textCaption = rbl.getString("Environment_Parameters_ConfigDialog_TextArea_Contents"); 
    String addButtonCaption = rbl.getString("Environment_Parameters_ConfigDialog_Button_Add"); //contains Add VAR
    String delButtonCaption = rbl.getString("Environment_Parameters_ConfigDialog_Button_Delete"); //contains Delete VAR
    String repButtonCaption = rbl.getString("Environment_Parameters_ConfigDialog_Button_Replace"); //contains Replace
    String errorHeader = rbl.getString("ErrorHeader"); //contains Error!
    String infoHeader = rbl.getString("InfoHeader"); //contains Info!   
    String envParamsConfigError1 = rbl.getString("Environment_Parameters_ConfigDialog_ErrorMSG1"); //contains Fields Cannot be left empty.
    String envParamsConfigError2 = rbl.getString("Environment_Parameters_ConfigDialog_ErrorMSG2"); //contains Fields Cannot be left empty.    
    
    ResourceBundle rb = ResourceBundle.getBundle("issrg/editor2/PEIFConditions_i18n");
    String type1 = rb.getString("type1");
    String type2 = rb.getString("type2");
    String type3 = rb.getString("type3");
    String type4 = rb.getString("type4");
    String type5 = rb.getString("type5");
    String type6 = rb.getString("type6");
    String type7 = rb.getString("type7");
    
    /** Creates a new instance of EnvParametersConfiguration */
    public EnvParametersConfiguration(XMLEditor that) 
    {
        super(that);
        this.setLayout(new BorderLayout());
        this.add(getContentPanel(), BorderLayout.CENTER);
       
        setCaption("ADD_BUTTON", addButtonCaption);
        setCaption("DELETE_BUTTON", delButtonCaption);
        setCaption("REPLACE_BUTTON", repButtonCaption);
    }
    
    /**
     * Method that creates a GUI Panel with the required fields to create
     * and modify an Environment Variable
     *
     * @return     a JPanel with the Display for the Environment Parameters 
     *             configuration.
     */
    public JPanel getContentPanel()
    {
        //initializations of JPanels to use
        eastPanel = super.getContentPanel();     //NodeList Panel
        eastPanel.setPreferredSize(new Dimension(300,200));
        westPanel = new JPanel();
        envParamConfigPanel = new JPanel();
        //---------------------------------
        
        //initialization of the JLabels
        nameLabel = new JLabel();
        nameLabel.setText(nameLabelCaption);
        typeLabel = new JLabel();
        typeLabel.setText(typeLabelCaption);
        //-----------------------------
        
        //initialization of the JTextFields
        nameTextField = new JTextField(15);
        //---------------------------------
        
        //initialization of the JComboBox
        dataTypeField = new JComboBox();
        dataTypeField.addItemListener(this);
        
        //------populate the ComboBox
        dataTypeField.addItem("");
        dataTypeField.addItem(type3);
        dataTypeField.addItem(type4);
        dataTypeField.addItem(type5);
        dataTypeField.addItem(type6);
        dataTypeField.addItem(type1);
        dataTypeField.addItem(type2);
        dataTypeField.addItem(type7);
        //----------------------------
        
        //setting the KeyListeners & ActionListeners to the JTextFields
        nameTextField.addKeyListener(this);
        nameTextField.addActionListener(this);
        nameTextField.setActionCommand("name_tf");
        //---------------------------------
        
        //initialization of the other Components
        descriptionText = new JTextArea(textCaption);
        descriptionText.setPreferredSize(new Dimension(300, 200));
        descriptionText.setFont(new Font("Dialog", 0, 14));
        descriptionText.setForeground(Color.BLACK);
        descriptionText.setBackground(new Color(236,233,216));      
        descriptionText.setLineWrap(true);
        descriptionText.setWrapStyleWord(true);
        descriptionText.setEditable(false);
        //---------------------------------
                
        //Setting the Layout Manager
        westPanel.setLayout(new GridBagLayout());
        envParamConfigPanel.setLayout(new GridBagLayout());
        //--------------------------
        
        //Fill in panel for user input.
        constraints.insets = new Insets(0,5,0,5);
        addComponent(nameLabel, westPanel, 0, 0, 1, 1, GridBagConstraints.LINE_END, 0, 0, GridBagConstraints.NONE);
        addComponent(nameTextField, westPanel, 0, 1, 1, 1, GridBagConstraints.LINE_END, 1, 0, GridBagConstraints.HORIZONTAL);
        constraints.insets = new Insets(5,5,5,5);
        addComponent(typeLabel, westPanel, 1, 0, 1, 1, GridBagConstraints.LINE_END, 0, 0, GridBagConstraints.NONE);
        addComponent(dataTypeField, westPanel, 1, 1, 1, 1, GridBagConstraints.LINE_END, 1, 0, GridBagConstraints.HORIZONTAL);
        //---------------------------------
        
        //Create the final panel
        constraints.insets = new Insets(0,0,0,0);
        addComponent(eastPanel, envParamConfigPanel, 0, 1, 1, 3, GridBagConstraints.CENTER, 0.5, 1, GridBagConstraints.BOTH);
        eastPanel.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED), eastBorderCaption));
        addComponent(westPanel, envParamConfigPanel, 1, 0, 1, 1, GridBagConstraints.CENTER, 0.5, 0, GridBagConstraints.HORIZONTAL);
        westPanel.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED), westBorderCaption));
        addComponent(descriptionText, envParamConfigPanel, 2, 0, 1, 1, GridBagConstraints.CENTER, 0, 0, GridBagConstraints.NONE);
        descriptionText.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED), textBorderCaption));
        //----------------------
        
        return envParamConfigPanel;
    }    
    
    /**
     * This method can return true, if the Connection Name variable exists 
     * already. If The connection does not exist it will return false. 
     * This is used as a measure so that there will be no double entries.
     *
     * @param childToCheck   The element variable with the connection to check 
     *                       if already exists in the LDAP directory already.
     *
     * @return   a boolean which says if a connection name exists or not in the