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Web Application Framework in JavaScript and Objective-J
Objective-J HTML JavaScript Objective-C Python Groff Other

New: added delegate methods applicationShouldTerminate and applicatio…


This PR adds the delegate methods applicationShouldTerminate and applicationShouldTerminateMessage in CPApplicationDelegateProtocol.

The delegate applicationShouldTerminate does not exactly work as in Cocoa. In Cocoa, this method is called in CPApp -terminate, but in cappuccino it is called in the method onbeforeunload of the window. In JS, this is the only time where we can prevent to reload the HTML page. If the developer cancel to reload the page, the browser will ask the user if he wants to reload or not the page thought (natural behavior of js).

The method applicationShouldTerminateMessage allows you to define what will be the text displayed in the confirmation alert.

Test app in Tests/Manual/CPPlatformWindow/
latest commit 058a73f8a0
@Dogild Dogild authored


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Welcome to Cappuccino!


Cappuccino is an open source framework that makes it easy to build desktop-caliber applications that run in a web browser.

Cappuccino is built on top of standard web technologies like JavaScript, and it implements most of the familiar APIs from GNUstep and Apple's Cocoa frameworks. When you program in Cappuccino, you don't need to concern yourself with the complexities of traditional web technologies like HTML, CSS, or even the DOM. The unpleasantries of building complex cross browser applications are abstracted away for you.

For more information, see

System Requirements

To run Cappuccino applications, all you need is a web browser that understands JavaScript.

To build Cappuccino itself, please read below. More information is available here: Getting and Building the Source.

If you're using Windows, you'll also need Cygwin.

Finally, if you want to easily stay up to date with the latest developments and contribute your work back to the Cappuccino community, you'll want to install Git.

Getting Started

To get started, download and install the current release version of Cappuccino:

$ curl >/tmp/ && bash /tmp/

If you'd just like to get started using Cappuccino for your web apps, you are done.

The rest of these instructions are for building a development copy of Cappuccino. To build Cappuccino from source, check out the most recent stable version from GitHub:

$ git clone git:// (git)

or download the zipball of the most recent source code: (zip)

Then, simply type jake from within the root of the Cappuccino directory. If you get an error like jake: command not found, you forgot to run the bootstrap script as described above.

Jake will build a "release" copy of the frameworks. Typing jake debug will build a debug version.

jake install will build Cappuccino and associated tools and install them for general use.


The Cappuccino TextMate Bundle:

The Cappuccino Xcode Plugin:

Getting Help

If you need help with Cappuccino, you can get help from the following sources:

If you discover any bugs, please file a ticket at:


This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

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