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
*            dialog, and <code>false</code> if it cannot be canceled
     */
    public void setCancelable(boolean cancelable) {
        if (cancel == null)
            enableCancelButton = cancelable;
        else
            asyncSetOperationCancelButtonEnabled(cancelable);
    }
    /**
     * Helper to enable/disable Cancel button for this dialog.
     * 
     * @param b
     *            <code>true</code> to enable the cancel button, and
     *            <code>false</code> to disable it
     * @since 3.0
     */
    protected void setOperationCancelButtonEnabled(boolean b) {
        operationCancelableState = b;
        cancel.setEnabled(b);
    }
    /*
     *  (non-Javadoc)
     * @see org.eclipse.jface.dialogs.IconAndMessageDialog#getImage()
     */
    protected Image getImage() {
        return getInfoImage();
    }
    /**
     * Set the message in the message label.
     * @param messageString The string for the new message.