Custom UI class

Hello!

I have a dialog, which consists, among other things, of an instance of
JPanel. That JPanel instance is generated from a SwiXML file by means
of a class PropertiesPanel (method getPanel).

Event-handling is also implemented inside PropertiesPanel (full code
of PropertiesPanel see below).

Now I want to know whether it is possible to instruct SwiXML to 

a) create an instance of PropertiesPanel
b) invoke PropertiesPanel.getPanel()

when creating a UI from XML?

In other words, can I write into SwiXML UI descriptor something like

Sample (start)

<dialog title="Import from database" modal="true" resizable="true"
layout="GridBagLayout">
	<panel id="wannaBeCustomPanel"
generatorClass="net.sourceforge.demetrix.ui.PropertiesPanel">
		<gridbagconstraints insets="5,5,5,5" gridx="0"
gridy="0" anchor="GridBagConstraints.WEST"   weightx="1.0"
weighty="1.0" fill="GridBagConstraints.BOTH"/> 
	</panel>
</dialog> 

Sample (end)

?

Has someone done this or a similar thing?

Are there any alternatives apart from manually inserting
PropertiesPanel in Java?

TIA

dap


Code of PropertiesPanel (start)

package net.sourceforge.demetrix.ui;

import java.awt.event.ActionEvent;

import java.util.*;

import javax.swing.*;

import net.sourceforge.demetrix.Demetrix;

import net.sourceforge.demetrix.properties.*;

import net.sourceforge.demetrix.properties.swixml.*;

import org.apache.log4j.Logger;

import org.swixml.SwingEngine;

import org.swixml.XVBox;

/**
 * @author Dimitri Pissarenko
 *
 */

public class PropertiesPanel {

	public Action applyButtonAction = new AbstractAction() {

		public void actionPerformed(ActionEvent event) {

			applyButtonAction();

		}

	};

	private Logger logger = Logger.getLogger(getClass());

	public JButton newPropertyButton;

	public Action newPropertyButtonAction = new AbstractAction() {

		public void actionPerformed(ActionEvent event) {
			addNewProperty();
		}

	};

	public JButton applyButton;

	public JLabel nodeLabel;

	private JPanel panel;

	private DemetrixPropertiesHolder propertiesHolder;

	private DemetrixPropertyRenderer propertyRenderer;

	public XVBox propertyRowsPanel;

	private Hashtable representationsByPropertyNames;

	private final String UI_DEF_FILE_NAME =
		"net/sourceforge/demetrix/ui/PropertiesPanel.xml";

	public PropertiesPanel() {
		
		try {

			this.panel =
				(JPanel) (new
SwingEngine(this)).render(

ClassLoader.getSystemClassLoader().getResource(UI_DEF_FILE_NAME));

		} catch (Exception exception) {

			this.logger.error("", exception);

		}

		this.propertyRenderer = new SwixMLPropertyRenderer();

	}

	private void addNewProperty() {

		DemetrixPropertyCreationDialog dialog = null;

		DemetrixProperty newProperty = null;

		String newPropertyName = null;

		dialog =
			new DemetrixPropertyCreationDialog(
				this.representationsByPropertyNames);

		dialog.show();

		if (dialog.isClosedWithOk()) {

			newPropertyName = dialog.getPropertyName();

			newProperty = dialog.getProperty();

			newProperty.setName(newPropertyName);


this.propertiesHolder.addProperty(newProperty);

			this.updatePropertiesPanel();

		}

	}

	public JPanel getPanel() {

		return this.panel;

	}

	protected void updatePropertiesPanel() {

		Iterator propertiesIterator = null;

		DemetrixProperty currentProperty = null;

		SwixMLDemetrixPropertyRepresentation representation =
null;

		this.representationsByPropertyNames = new Hashtable();

		this.propertyRowsPanel.removeAll();
		if (this.propertiesHolder!=null)
		{
			propertiesIterator =
this.propertiesHolder.getAllProperties();
			while (propertiesIterator.hasNext()) {

				currentProperty = (DemetrixProperty)
propertiesIterator.next();

				representation =
					(

SwixMLDemetrixPropertyRepresentation) this

.propertyRenderer

.renderProperty(
						currentProperty);

				if (representation != null) {


this.propertyRowsPanel.add(representation.getPanel());


representation.updateRepresentation(currentProperty);


this.representationsByPropertyNames.put(

currentProperty.getName(),
						representation);

				}

			}
		}

	}

	private void updatePropertyData() {

		Iterator propertiesIterator = null;

		DemetrixProperty currentProperty = null;

		DemetrixPropertyRepresentation representation = null;

		if (this.propertiesHolder != null) {

			propertiesIterator =
this.propertiesHolder.getAllProperties();

			while (propertiesIterator.hasNext()) {

				currentProperty = (DemetrixProperty)
propertiesIterator.next();

				representation =
					(

DemetrixPropertyRepresentation) this

.representationsByPropertyNames
							.get(

currentProperty.getName());
				this.logger.debug("representation=" +
representation);
				this.logger.debug("currentProperty=" +
currentProperty);

representation.updatePropertyData(currentProperty);

			}

		}

	}

	public String getInvalidPropertyName() {

		Enumeration enumeration = null;

		SwixMLDemetrixPropertyRepresentation representation =
null;

		String propertyName = null;

		boolean everythingValid = true;

		enumeration =
this.representationsByPropertyNames.keys();

		while (enumeration.hasMoreElements() &&
everythingValid) {

			propertyName = (String)
enumeration.nextElement();

			representation =
				(

SwixMLDemetrixPropertyRepresentation) this

.representationsByPropertyNames
						.get(
					propertyName);

			if (!representation.isEnteredDataValid()) {

				everythingValid = false;

			}

		}

		if (everythingValid) {

			return null;

		} else {

			return propertyName;

		}

	}

	public boolean updateDataObject() {

		String invalidPropertyName = null;

		boolean everythingOk = false;

		invalidPropertyName = this.getInvalidPropertyName();

		if (invalidPropertyName == null) {

			updatePropertyData();

			everythingOk = true;

		} else {

			JOptionPane.showMessageDialog(
				this.panel,
				"Property \""
					+ invalidPropertyName
					+ "\" can't be changed, the
value you entered is not valid.",
				Demetrix.PRODUCT_NAME,
				JOptionPane.ERROR_MESSAGE);

			everythingOk = false;

		}

		return everythingOk;

	}

	protected void applyButtonAction() {

		if (this.updateDataObject()) {


ProcessChainEditor.getInstance().redrawGraph();

		}

	}

	/**
	 * @return
	 */

	public DemetrixPropertiesHolder getPropertiesHolder() {

		return propertiesHolder;

	}

	/**
	 * @param holder
	 */

	public void setPropertiesHolder(DemetrixPropertiesHolder
holder) {

		propertiesHolder = holder;

		this.updatePropertiesPanel();

	}

	/**
	 * @return
	 */
	protected Hashtable getRepresentationsByPropertyNames() {
		return representationsByPropertyNames;
	}

}

Code of PropertiesPanel (end)