Bug 300472 [Dialogs] [JFace] Provide accessor for dialog messages
It would be nice to have access to the Dialog messages (eg. IDialogConstants.OK_LABEL) trough API instead of a field access. This would allow the RAP team to provide a session-based translation for the labels and furthermore improves the usability for our current users. Developers who want to single-source their applications for RCP and RAP cannot use the existing API of JFace as the labels are hardcoded as static fields and RAP has no chance to intervene this behavior without breaking API. I suggest to provide an accessor like SWT.getMessage() to get the translated string as this would allow developers to use the same API in RCP and JFace. I'd be happy to provide a patch once we decided on a possible approach. As suggested above, I'd introduce an accessor on Dialog itself and introduce message keys in IDialogConstants.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/IDialogConstants.java
*/
    public String HELP_LABEL = JFaceResources.getString("help"); 
    
    /**
     * Vertical margin in dialog units (value 7).
     */
    public int VERTICAL_MARGIN = 7;
    /**
     * Vertical spacing in dialog units (value 4).
     */
    public int VERTICAL_SPACING = 4;
    /**
     * Horizontal margin in dialog units (value 7).
     */
    public int HORIZONTAL_MARGIN = 7;
    /**
     * Horizontal spacing in dialog units (value 4).
     */
    public int HORIZONTAL_SPACING = 4;
    /**
     * Height of button bar in dialog units (value 25).
     */
    public int BUTTON_BAR_HEIGHT = 25;
    /**
     * Left margin in dialog units (value 20).
     */
    public int LEFT_MARGIN = 20;
    /**
     * Button margin in dialog units (value 4).
     */