Bug 79909 [JFace] Localized resource registries for JFace
Please provide improved JFace support for managing SWT resources, with the following properties: - A registry can allocate and deallocate SWT resources given a descriptor - Resources are reference-counted and shared, allowing different objects with equivalent descriptors to share resources. - Everything in the registry can be deallocated with one function call - The registry should support an open-ended set of resources (and should initially support, at minimum, Images, Fonts, Colors) - It should be possible to create a "local registry" that behaves like a regular registry but actually shares its resources with a global registry. For example, the workbench could offer a local registry as a service to views and editors. This would allow views and editors to safely allocate and deallocate SWT resources without any chance of leaking.
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/Wizard.java
/*
     * (non-Javadoc) Method declared on IWizard.
     */
    public IWizardPage[] getPages() {
        return (IWizardPage[]) pages.toArray(new IWizardPage[pages.size()]);
    }
    /*
     * (non-Javadoc) Method declared on IWizard. The default behavior is to
     * return the page that was added to this wizard before the given page.
     */
    public IWizardPage getPreviousPage(IWizardPage page) {
        int index = pages.indexOf(page);
        if (index == 0 || index == -1)
            
            return null;
        else
            return (IWizardPage) pages.get(index - 1);
    }
    /**
     * Returns the wizard's shell if the wizard is visible. Otherwise
     * <code>null</code> is returned.
     * 
     * @return Shell
     */
    public Shell getShell() {
        if (container == null)
            return null;
        return container.getShell();
    }
    /*