Bug 131771 Match animated message behaviour in Preferences
An enhancement should be made to Preferences so that warnings and errors show up in a sliding message area like it they do in TitleAreaDialog.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TitleAreaDialog.java
titleImage.setImage(JFaceResources.getImage(DLG_IMG_TITLE_BANNER));
        FormData imageData = new FormData();
        imageData.top = new FormAttachment(0, 0);
        
        
        
        
        
        imageData.right = new FormAttachment(100, 0); 
        titleImage.setLayoutData(imageData);
        
        titleLabel = new Label(titleArea, SWT.LEFT);
        JFaceColors.setColors(titleLabel, foreground, background);
        titleLabel.setFont(JFaceResources.getBannerFont());
        titleLabel.setText(" ");
        FormData titleData = new FormData();
        titleData.top = new FormAttachment(0, verticalSpacing);
        titleData.right = new FormAttachment(titleImage);
        titleData.left = new FormAttachment(0, horizontalSpacing);
        titleLabel.setLayoutData(titleData);
        
        messageImageLabel = new Label(titleArea, SWT.CENTER);
        messageImageLabel.setBackground(background);
        
        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;