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/wizard/WizardDialog.java
* This allows the wizard dialog to open to the correct size.
     */
    private void createPageControls() {
        
        
        wizard.createPageControls(pageContainer);
        
        IWizardPage[] pages = wizard.getPages();
        for (int i = 0; i < pages.length; i++) {
            IWizardPage page = pages[i];
            if (page.getControl() != null)
                page.getControl().setVisible(false);
        }
    }
    /**
     * Creates the Previous and Next buttons for this wizard dialog.
     * Creates standard (<code>SWT.PUSH</code>) buttons and registers for their
     * selection events. Note that the number of columns in the button bar composite
     * is incremented. These buttons are created specially to prevent any space 
     * between them.
     *
     * @param parent the parent button bar
     * @return a composite containing the new buttons
     */
    private Composite createPreviousAndNextButtons(Composite parent) {
        
        ((GridLayout) parent.getLayout()).numColumns++;
        Composite composite = new Composite(parent, SWT.NONE);
        
        GridLayout layout = new GridLayout();