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/resource/JFaceResources.java
* <pre>
     * JFaceResources.getFontRegistry().get(JFaceResources.VIEWER_FONT)
     * </pre>
     *
     * @return the font
     * @deprecated This font is not in use
     */
    public static Font getViewerFont() {
        return getFontRegistry().get(VIEWER_FONT);
    }
    /**
     * Sets JFace's font registry to the given value.
     * This method may only be called once; the call must occur
     * before <code>JFaceResources.getFontRegistry</code>
     * is invoked (either directly or indirectly). 
     *
     * @param registry a font registry
     */
    public static void setFontRegistry(FontRegistry registry) {
        Assert.isTrue(fontRegistry == null,
                "Font registry can only be set once."); 
        fontRegistry = registry;
    }
    /* (non-Javadoc)
     * Declare a private constructor to block instantiation.
     */
    private JFaceResources() {
        
    }
}