michael@0: /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsISupports.idl"
michael@0: 
michael@0: /**
michael@0:  * The nsITextScroll is an interface that can be implemented by a control that
michael@0:  * supports text scrolling. 
michael@0:  */
michael@0: 
michael@0: [scriptable, uuid(067B28A0-877F-11d3-AF7E-00A024FFC08C)]
michael@0: interface nsITextScroll : nsISupports
michael@0: {
michael@0:   /**
michael@0:    * Scroll the view up or down by aNumLines lines. positive
michael@0:    * values move down in the view. Prevents scrolling off the
michael@0:    * end of the view.
michael@0:    * @param numLines number of lines to scroll the view by
michael@0:    */
michael@0: 	void scrollByLines(in long numLines);
michael@0: 
michael@0: 	/**
michael@0:    * Scroll the view up or down by numPages pages. a page
michael@0:    * is considered to be the amount displayed by the clip view.
michael@0:    * positive values move down in the view. Prevents scrolling
michael@0:    * off the end of the view.
michael@0:    * @param numPages number of pages to scroll the view by
michael@0:    */
michael@0: 	void scrollByPages(in long numPages);
michael@0: };