jas2.util.pluginmanager

Class AppVersionCheck

java.lang.Object

jas2.util.pluginmanager.AppVersionCheck

All Implemented Interfaces:

java.awt.event.ActionListener, java.util.EventListener

Direct Known Subclasses:

JASVersion

public class AppVersionCheck
extends java.lang.Object
implements java.awt.event.ActionListener

This class works with the VersionNumberComparison class to check if current version of an application is the latest version. A JPane is created which when added to a JFrame prompts the user to select if they would like to check the application version now, or every time the application starts, or both. If they wish to check the version then they need to decide if they are looking for new developement or production releases. The latest developement and production version numbers are read from the web page referenced by the constructor argument url and is compared to constructor argument current version. Appropriate output messages are generated.

Constructor Summary

Constructors

Constructor and Description
AppVersionCheck(java.lang.String appname, java.lang.String versionURL, java.lang.String currentversion, java.util.Properties userprops) The Constructor takes two arguments:

Method Summary

Modifier and Type	Method and Description
void	actionPerformed(java.awt.event.ActionEvent e)
javax.swing.JPanel	getVersionCheckOptionPane() Returns a JPane which contains three check boxes that allow the user to chose when to check for a new version of the application and if they are looking for develpement or production releases.
void	setUserProperties()
void	showUpdateDialog(java.awt.Container c, boolean ignoreErrors, boolean ignoreRunningCurrentVersion) Call this method to compare versions and generate the resulting dialog panes
int	testCurrentVersion()

Methods inherited from class java.lang.Object

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

Constructor Detail

AppVersionCheck

public AppVersionCheck(java.lang.String appname,
                       java.lang.String versionURL,
                       java.lang.String currentversion,
                       java.util.Properties userprops)

The Constructor takes two arguments:

Parameters:

c - The container argument is of special interest because it is the container that the JOptionPanes generated in this class are attatched to. If the VersionOptionPane is created then its container should be passed in, other wise the application container should be used.

versionprops - The Properties object is used to set the current application properties. It should include the following keys:

appname - is the name of the application

url - should refer to the location of a web page which contains the version number of the latest developers release on the first line and the latest production release on the second line.

currentversion - should be the current running version of the application.

versionselection - sets the current selection for the 'which version' check boxes.

updateonstartselection - sets whether the user wants to automatically look for updates on start up.

versioncheckoptionpane - controls whether the JOptionPane which notifies the user that they are currnetly running the latest version should be displayed, if the container used is the one which contains the VersionCheckOptionPane then the message will be displayed, otherwise not.

Method Detail

getVersionCheckOptionPane

public javax.swing.JPanel getVersionCheckOptionPane()

Returns a JPane which contains three check boxes that allow the user to chose when to check for a new version of the application and if they are looking for develpement or production releases.

testCurrentVersion

public int testCurrentVersion()

showUpdateDialog

public void showUpdateDialog(java.awt.Container c,
                             boolean ignoreErrors,
                             boolean ignoreRunningCurrentVersion)

Call this method to compare versions and generate the resulting dialog panes

setUserProperties

public void setUserProperties()

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Specified by:

actionPerformed in interface java.awt.event.ActionListener