/**
* Updates the wizard pages according to the selected generator type.
*/
public void updateGeneratorPageSequence()
{
Generator generator = context.getSelectedGenerator();
SequenceManagerImpl manager = (SequenceManagerImpl) getManager();
if (originalSequence == null)
{
// First time: Back up the page sequence
try
{
originalSequence = (SequenceManagerImpl) manager.clone();
}
catch (CloneNotSupportedException e)
{
// Never happens
}
}
else
{
// Restore the original page sequence
try
{
String current = manager.getCurrent();
manager = (SequenceManagerImpl) originalSequence.clone();
setManager(manager);
manager.setCurrent(current);
}
catch (CloneNotSupportedException e)
{
// Never happens
}
}
if (generator != null)
{
context.setInvalidGenerator(false);
// A generator type was selected, we can continue.
// Perform the necessary preparations
try
{
// Create the generator customizer class for this type
generator.checkRequirements(context);
generator.createSettings(context);
generator.loadSettings(context);
GeneratorCustomizer customizer = generator.getCustomizer();
if (customizer != null)
{
customizer.beforePageSequenceUpdate(context, this);
}
// Create and link the custom pages if defined
List customPages = generator.getCustomPageList();
if (customPages != null)
{
// Determine the first generator page and its successor
String currentPageName;
String next;
if (getPage(GeneratorWizard.SELECTION_PAGE) != null)
{
currentPageName = GeneratorWizard.SELECTION_PAGE;
next = manager.getNext(currentPageName);
}
else
{
currentPageName = null;
next = manager.getFirst();
}
// Custom pages, link them into the sequence
int n = customPages.size();
for (int i = 0; i < n; ++i)
{
GeneratorPageDescriptor pd = (GeneratorPageDescriptor) customPages.get(i);
String pageName = pd.getName();
WizardPage page = (WizardPage) getPage(pageName);
if (page == null)
{
// If the page does not yet exist, create it
String pageClassName = pd.getPageClassName();
String objectClassName = pd.getObjectClassName();
if (objectClassName != null)
{
// Object page, get/create the object
Object o = context.getProperty(pageName);
if (o == null)
{
o = ReflectUtil.instantiate(objectClassName, null,
"generator settings object class");
context.setProperty(pageName, o);
}
// Create property browser page and set the object
page = new WizardObjectPage(this, pd);
}
else if (pageClassName != null)
{
try
{
Class pageClass = Class.forName(pageClassName);
// We retrieve the Constructor of the page that uses one single parameter
// of the type Wizard.
Constructor[] ctrs = pageClass.getDeclaredConstructors();
for (int ic = 0; ic < ctrs.length; ++ic)
{
Class[] params = ctrs[ic].getParameterTypes();
if (params.length == 1 && params[0] == GeneratorWizard.class)
{
page = (WizardPage) ctrs[ic].newInstance(new Object[]
{
this
});
break;
}
}
if (page == null)
throw new GeneratorException("Class '" + pageClassName
+ "' does not have a (GeneratorWizard) constructor.");
}
catch (Exception e)
{
String msg = LogUtil.error(getClass(), "Cannot instantiate page class $0.",
pageClassName, e);
String exMsg = ExceptionUtil.getNestedMessage(e);
throw new GeneratorException(exMsg != null ? exMsg : msg);
}
}
if (page != null)
{
// Get the description of the page from the page descriptor
String pageDescription = pd.getDescription();
page.setDescription(pageDescription);
// Add it to the wizard
addPage(pageName, page);
}
}
if (page != null)
{
// Get the title of the page from the page descriptor
String pageTitle = pd.getDisplayName();
if (pageTitle == null)
pageTitle = generator.getDisplayName();
page.setTitle(pageTitle);
if (pd.isFinish())
{
page.canFinish = true;