Bug 93674 [Dialogs] ProgressMonitorDialog not cancellable when fork is set to false
Overview Description: Invoking the ProgressMonitorDialog::run(boolean fork, boolean cancelable, IRunnableWithProgress runnable) method with the fork parameter set to false, the user can't cancel the running dialog -even if the cancelable parameter is set to true. Steps to Reproduce: Simply launch a ProgressMonitorDialog and invoke its run method with fork parameter == false and cancelable parameter == true Actual Results: The Cancel button is not responsive to user clicks and the IProgressMonitor::isCanceled() will always regardless. Expected Results: When the suer clicks the Cancel button on the dialog, calling IProgressMonitor::isCanceled() should return true so that the executing IRunnableWithProgress can have a chance to honour the user's request and exit.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/ProgressMonitorDialog.java
IRunnableContext {
    /**
     * Name to use for task when normal task name is empty string.
     */
    private static String DEFAULT_TASKNAME = JFaceResources
            .getString("ProgressMonitorDialog.message"); 
    /**
     * Constants for label and monitor size
     */
    private static int LABEL_DLUS = 21;
    private static int BAR_DLUS = 9;
    /**
     * The progress indicator control.
     */
    protected ProgressIndicator progressIndicator;
    /**
     * The label control for the task. Kept for backwards compatibility.
     */
    protected Label taskLabel;
    /**
     * The label control for the subtask.
     */
    protected Label subTaskLabel;
    /**
     * The Cancel button control.
     */
    protected Button cancel;
    /**
     * Indicates whether the Cancel button is to be shown.