// PropertiesServerHelper.java
// $Id: PropertiesServerHelper.java,v 1.10 1999/03/05 13:44:00 bmahe Exp $
// (c) COPYRIGHT MIT and INRIA, 1998.
// Please first read the full copyright statement in file COPYRIGHT.html
 
package org.w3c.jigadmin.editors;

import java.awt.Insets;
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Cursor;
import java.awt.Component;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.JTabbedPane;
import javax.swing.border.TitledBorder;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;

import java.util.Properties;
import java.util.Hashtable;

import org.w3c.jigadmin.RemoteResourceWrapper;
import org.w3c.jigadmin.PropertyManager;
import org.w3c.jigadmin.gui.Message;

import org.w3c.jigsaw.admin.RemoteAccessException;

import org.w3c.tools.widgets.Utilities;
import org.w3c.tools.sorter.Sorter;

/**
 * The server helper dedicated to the properties.
 * @version $Revision: 1.10 $
 * @author  Benoît Mahé (bmahe@w3.org)
 */
public class PropertiesServerHelper extends JPanel 
    implements ServerHelperInterface, ChangeListener
{
    protected String                name         = null;
    protected String                tooltip      = null;
    protected RemoteResourceWrapper root         = null;
    protected String                properties[] = null;
    protected JPanel                cards        = null;
    protected Hashtable             helpers      = null;
    protected String                selected     = null;

    /**
     * Initialize this editor.
     * @param name the editor name
     * @param rrw the RemoteResourceWrapper wrapping the editor node.
     * @param p the editor properties
     */ 
    public void initialize(String name, 
			   RemoteResourceWrapper rrw, 
			   Properties p)
    {
	this.name = name;
	this.root = rrw;
	this.tooltip = (String) p.get(TOOLTIP_P);
	build();
    }

    /**
     * ChangeListener implementation.
     * @param e a ChangeEvent
     */
    public void stateChanged(ChangeEvent e) {
	Object source = e.getSource();
	if (source instanceof JTabbedPane) {
	    JTabbedPane pane = (JTabbedPane) source;
	    if (pane.getSelectedComponent() == this) {
		removeAll();
		invalidate();
		build();
		if (selected != null)
		    select(selected);
		validate();
	    }
	}
	
    }

    /**
     * Build the interface.
     */
    protected void build() {
	int     len   = 0;
	JButton b     = null;

	helpers = new Hashtable();

	try {
	    properties = root.getResource().enumerateResourceIdentifiers();
	    Sorter.sortStringArray(properties, true);
	} catch (RemoteAccessException ex) {
	    Message.showErrorMessage(this, ex);
	}
	if (properties == null)
	    return;

	setLayout(new BorderLayout());
	len = properties.length;
	JPanel buttons = new JPanel(new GridLayout(len, 1));
	cards = new JPanel(new CardLayout()); 

	ActionListener listener = new ActionListener() {
	    public void actionPerformed(ActionEvent e) {
		root.getServerBrowser().setCursor(Cursor.WAIT_CURSOR);
		String property = e.getActionCommand();
		select(property);
		root.getServerBrowser().setCursor(Cursor.DEFAULT_CURSOR);
	    }
	};

	for (int i = 0 ; i < len ; i++) {
	    String name = properties[i];
	    //button
	    b = new JButton(name);
	    b.setVerticalTextPosition(AbstractButton.CENTER);
	    b.setHorizontalTextPosition(AbstractButton.CENTER);
	    b.setActionCommand(name);
	    b.addActionListener(listener);
	    b.setMargin(Utilities.insets2);
	    buttons.add(b);
	    //attribute helper
	    JPanel p1 = new JPanel(new GridLayout(1,1));
	    p1.setBorder(BorderFactory.createTitledBorder(name));
	    helpers.put(name, p1);
	    cards.add(name, p1);
	}
	JPanel p1 = new JPanel(new BorderLayout());
	p1.add(buttons, BorderLayout.NORTH);
	p1.setBorder(BorderFactory.createTitledBorder("Properties"));
	add(p1, BorderLayout.WEST);
	add(cards, BorderLayout.CENTER);
    }
    
    protected void select(String name) {
	selected = name;
	JPanel p1 = (JPanel)helpers.get(name);
	p1.removeAll();
	try {
	    RemoteResourceWrapper rrw = root.getChildResource(name);
	    AttributesHelper helper = new AttributesHelper();
	    PropertyManager pm = PropertyManager.getPropertyManager();
	    Properties props = pm.getEditorProperties(rrw);
	    helper.initialize(rrw, props);
	    p1.add(helper.getComponent());
	    p1.invalidate();
	    p1.validate();
	} catch (RemoteAccessException ex) {
	    Message.showErrorMessage(this, ex);
	}
	((CardLayout)cards.getLayout()).show(cards, name);
    }

    /**
     * Get the helper name.
     * @return a String instance
     */
    public String getName() {
	return name;
    }

    /**
     * Get the helper tooltip
     * @return a String
     */
    public String getToolTip() {
	return tooltip;
    }

    /**
     * Get the Component.
     * @return a Component instance
     */
    public Component getComponent() {
	return this;
    }

    /**
     * Constructor.
     */
    public PropertiesServerHelper() {
	//new instance
    }

}
