Bug 4121 JarExporter causes out of Sync (1GILQD5)
PA (8/17/01 2:03:29 PM) if you export a directory (project) and place the exported jar in the same directory (project) then you will get an out of sync message when you overwrite the exported jar-file the 2nd time. -> maybe the exported jar file should not include itself ? NOTES:
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarPackageWizardPage.java
*/	
	public void handleEvent(Event e) {
		if (getControl() == null)
			return;
		update();
	}
	
	protected void update() {
		updateModel();
		updateWidgetEnablements();
		updatePageCompletion();
	}
	
	/*
	 * Overrides method from WizardDataTransferPage
	 */
	protected boolean validateDestinationGroup() {
		if (fDestinationNamesCombo.getText().length() == 0) {
			return false;
		}
		if (fJarPackage.getJarLocation().toString().endsWith("/")) { 
			setErrorMessage(JarPackagerMessages.getString("JarPackageWizardPage.error.exportDestinationMustNotBeDirectory")); 
			fDestinationNamesCombo.setFocus();
			return false;
		}
		return ensureTargetFileIsValid(fJarPackage.getJarLocation().toFile());
	}
	/*
	 * Overrides method from WizardDataTransferPage
	 */