Bug 331335 [Wizards] Bad implementation of IWizard's dispose() method can prevent the dialog from closing
If there is bad client code in an IWizard's dispose() method, the dialog get into a state where it cannot be closed. ------------ Run this code and try to close the wizard dialog, you will not be able to. Display display = new Display(); Wizard wizard = new Wizard() { public boolean performFinish() { return true; } public void dispose() { throw new RuntimeException(); } }; WizardDialog dialog = new WizardDialog(null, wizard); dialog.open(); display.dispose(); ------------ java.lang.RuntimeException at Main$5.dispose(Main.java:142) at org.eclipse.jface.wizard.WizardDialog.hardClose(WizardDialog.java:859) at org.eclipse.jface.wizard.WizardDialog.close(WizardDialog.java:484) at org.eclipse.jface.window.Window.handleShellCloseEvent(Window.java:741) at org.eclipse.jface.window.Window$3.shellClosed(Window.java:687) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:98)
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/WizardDialog.java
*/
	protected void nextPressed() {
		IWizardPage page = currentPage.getNextPage();
		if (page == null) {
			
			return;
		}
		
		showPage(page);
	}
	/**
	 * Notifies page changing listeners and returns result of page changing
	 * processing to the sender.
	 * 
	 * @param eventType
	 * @return <code>true</code> if page changing listener completes
	 *         successfully, <code>false</code> otherwise
	 */
	private boolean doPageChanging(IWizardPage targetPage) {
		PageChangingEvent e = new PageChangingEvent(this, getCurrentPage(),
				targetPage);
		firePageChanging(e);
		
		return e.doit;
	}
	/**
	 * Checks whether it is alright to close this wizard dialog and performed
	 * standard cancel processing. If there is a long running operation in
	 * progress, this method posts an alert message saying that the wizard
	 * cannot be closed.