FileDocCategorySizeDatePackage
MessageViewer.javaAPI DocGlassfish v2 API7333Mon Oct 17 14:54:18 BST 2005None

MessageViewer

public class MessageViewer extends JPanel implements CommandObject
version
1.16, 01/05/23
author
Christopher Cotton
author
Bill Shannon

Fields Summary
Message
displayed
DataHandler
dataHandler
String
verb
Component
mainbody
TextArea
headers
Constructors Summary
public MessageViewer()


      
	this(null);
public MessageViewer(Message what)

	// set our layout
	super(new GridBagLayout());

	// add the toolbar
	addToolbar();

	GridBagConstraints gb = new GridBagConstraints();
	gb.gridwidth = GridBagConstraints.REMAINDER;
	gb.fill = GridBagConstraints.BOTH;
	gb.weightx = 1.0;
	gb.weighty = 0.0;

	// add the headers
	headers = new TextArea("", 4, 80, TextArea.SCROLLBARS_NONE);
	headers.setEditable(false);
	add(headers, gb);

	// now display our message
	setMessage(what);
Methods Summary
protected voidaddToolbar()

	GridBagConstraints gb = new GridBagConstraints();
	gb.gridheight = 1;
	gb.gridwidth = 1;
	gb.fill = GridBagConstraints.NONE;
	gb.anchor = GridBagConstraints.WEST;
	gb.weightx = 0.0;
	gb.weighty = 0.0;
  	gb.insets = new Insets(4,4,4,4);

	// structure button
	gb.gridwidth = GridBagConstraints.REMAINDER; // only for the last one
	Button b = new Button("Structure");
	b.addActionListener( new StructureAction());
 	add(b, gb);
protected java.awt.ComponentgetBodyComponent()

	//------------
	// now get a content viewer for the main type...
	//------------
	try {
	    DataHandler dh = displayed.getDataHandler();
	    CommandInfo ci = dh.getCommand("view");
	    if (ci == null) {
		throw new MessagingException("view command failed on: " +
					     displayed.getContentType());
	    }
	
	    Object bean = dh.getBean(ci);
	    if (bean instanceof Component) {
		return (Component)bean;
	    } else {
		throw new MessagingException("bean is not a component " +
					     bean.getClass().toString());
	    }
	} catch (MessagingException me) {
	    return new Label(me.toString());
	}
protected voidloadHeaders()

	// setup what we want in our viewer
	StringBuffer sb = new StringBuffer();

	// date
	sb.append("Date: ");
	try {
	    Date duh = displayed.getSentDate();
	    if (duh != null) {
		sb.append(duh.toString());
	    } else {
		sb.append("Unknown");
	    }
	    
	    sb.append("\n");

	    // from
	    sb.append("From: ");
	    Address[] adds = displayed.getFrom();
	    if (adds != null && adds.length > 0) {
		sb.append(adds[0].toString());
	    }
	    sb.append("\n");
	
	    // to
	    sb.append("To: ");
	    adds = displayed.getRecipients(Message.RecipientType.TO);
	    if (adds != null && adds.length > 0) {
		sb.append(adds[0].toString());
	    }
	    sb.append("\n");	

	    // subject
	    sb.append("Subject: ");
	    sb.append(displayed.getSubject());
	    
	    headers.setText(sb.toString());
	} catch (MessagingException me) {
	    headers.setText("");
	}
public voidsetCommandContext(java.lang.String verb, javax.activation.DataHandler dh)
the CommandObject method to accept our DataHandler

param
dh the datahandler used to get the content

	this.verb = verb;
	dataHandler = dh;
	
	Object o = dh.getContent();
	if (o instanceof Message) {
	    setMessage((Message)o);
	}
	else {
	    System.out.println( 
		"MessageViewer - content not a Message object, " + o);
	    if (o != null){
		System.out.println(o.getClass().toString());
	    }
	}
public voidsetMessage(Message what)
sets the current message to be displayed in the viewer

	displayed = what;

	if (mainbody != null)
	    remove(mainbody);

	if (what != null) {
	    loadHeaders();
	    mainbody = getBodyComponent();
	} else {
	    headers.setText("");
	    TextArea dummy = new TextArea("", 24, 80, TextArea.SCROLLBARS_NONE);
	    dummy.setEditable(false);
	    mainbody = dummy;
	}

	// add the main body
	GridBagConstraints gb = new GridBagConstraints();
	gb.gridwidth = GridBagConstraints.REMAINDER;
	gb.fill = GridBagConstraints.BOTH;
	gb.weightx = 1.0;
	gb.weighty = 1.0;
	add(mainbody, gb);

	invalidate();
	validate();