Bug 130631 Sliding job should be a system job
20050306 The title are dialog sliding job is showing up in my progress view. It should be a system job.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TitleAreaDialog.java
messageLabel = new Text(titleArea, SWT.WRAP | SWT.READ_ONLY);
        JFaceColors.setColors(messageLabel, foreground, background);
        messageLabel.setText(" \n "); 
        messageLabel.setFont(JFaceResources.getDialogFont());
        messageLabelHeight = messageLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
        
        leftFillerLabel = new Label(titleArea, SWT.CENTER);
        leftFillerLabel.setBackground(background);
        setLayoutsForNormalMessage(verticalSpacing, horizontalSpacing);
        determineTitleImageLargest();
        
        return titleArea;
    }
    /**
     * Determine if the title image is larger than the title message and message
     * area. This is used for layout decisions.
     */
    private void determineTitleImageLargest() {
        int titleY = titleImage.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
        int verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
        int labelY = titleLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
        labelY += verticalSpacing;
        labelY += messageLabelHeight;
        labelY += verticalSpacing;
        titleImageLargest = titleY > labelY;
    }
    /**
     * Set the layout values for the messageLabel, messageImageLabel and
     * fillerLabel for the case where there is a normal message.
     *