mdabbagh88 / scrolltorefresh

An NSScrollView subclass to allow the popular "pull to refresh" from iPhone to work on Mac OS X Lion

The First Scroll To Refresh solution using only AppKit and Public APIs!

Introduction

ScrollToRefresh is a subclass of NSScrollView that adds a "pull-to-refresh" feel to the "elastic" area of NSScrollview.

Usage

1. Set the class of your scroll view to EQSTRScrollView
2. Set the -refreshBlock of your scroll view to a block to run some code when the refresh starts.
3. When you know that your processing is finished, call -stopLoading on the scroll view to remove the refresh view.
4. PROFIT

How it works

The secret is actually knowing how scroll views work. When you scroll, the clip view offsets the origin of its -bounds so any subview within the clipview will scroll. It also employs a couple of other methods to check the boundaries of the document view which I override to include the refresh view to get a more natural feel.

License

ScrollToRefresh is licensed under the MIT license meaning you can do whatever you want with it and I am not responsible for any trouble you get and you must include the license in whatever you use it in.

//  ScrollToRefresh
//
// Copyright (C) 2011 by Alex Zielenski.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.