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
return forcePreviousAndNextButtons || pages.size() > 1;
    }
    /*
     * (non-Javadoc) Method declared on IWizard.
     */
    public boolean needsProgressMonitor() {
        return needsProgressMonitor;
    }
    /**
     * The <code>Wizard</code> implementation of this <code>IWizard</code>
     * method does nothing and returns <code>true</code>. Subclasses should
     * reimplement this method if they need to perform any special cancel
     * processing for their wizard.
     */
    public boolean performCancel() {
        return true;
    }
    /**
     * Subclasses must implement this <code>IWizard</code> method to perform
     * any special finish processing for their wizard.
     */
    public abstract boolean performFinish();
    /*
     * (non-Javadoc) Method declared on IWizard.
     */
    public void setContainer(IWizardContainer wizardContainer) {
        container = wizardContainer;
    }
    /**
     * Sets the default page image descriptor for this wizard.