jimm.datavision.gui
Class HelpURLStack

java.lang.Object
  jimm.datavision.gui.HelpURLStack

 class HelpURLStack
extends java.lang.Object

A URL stack manages the browser-like behaviour of having a current URL and a list of previous and next URLs. It also updates a URL text field and gives URLs to the JEditorPane that displays them.

We define the home page to be the first page loaded.

Field Summary

protected java.util.Stack	back
protected javax.swing.JEditorPane	contentField
protected java.net.URL	current
protected java.util.Stack	forward
protected java.net.URL	home
protected javax.swing.JTextField	urlField

Constructor Summary

HelpURLStack(javax.swing.JEditorPane htmlField, javax.swing.JTextField textField)

Method Summary

(package private) void	goTo(java.lang.String urlString)
(package private) void	goTo(java.net.URL url)
(package private) void	goToHomePage() The home page is the same as the first page we loaded.
(package private) void	goToNextPage()
(package private) void	goToPreviousPage()
(package private) boolean	hasNext()
(package private) boolean	hasPrevious()
protected void	updateGUI()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

back

protected java.util.Stack back

home

protected java.net.URL home

current

protected java.net.URL current

forward

protected java.util.Stack forward

contentField

protected javax.swing.JEditorPane contentField

urlField

protected javax.swing.JTextField urlField

Constructor Detail

HelpURLStack

HelpURLStack(javax.swing.JEditorPane htmlField,
             javax.swing.JTextField textField)

Method Detail

hasPrevious

boolean hasPrevious()

hasNext

boolean hasNext()

goTo

void goTo(java.lang.String urlString)

goTo

void goTo(java.net.URL url)

goToHomePage

void goToHomePage()

The home page is the same as the first page we loaded.

goToPreviousPage

void goToPreviousPage()

goToNextPage

void goToNextPage()

updateGUI

protected void updateGUI()